Note: Descriptions are shown in the official language in which they were submitted.
. ~S~L~53
This lnvention relates to flexible non-skid strips to
~ be installed on stairs, floors, sloped passages, station platforms
and the like, process for continuously producing the strips and
apparatus for carrying out the process.
There have been proposed and practically employed a
variety of protective stair edgings for protecting the edges
of stairs against potential damages and also for protecting
persons who walk on the stairs against potential slippage on
the stairs.
: 10 One of the most typical prior art protective stair
.: edgings comprises an integral structure formed of rubber or
.;
synthetic resin which includes a main body provided with a non-
skid top surface portion and a front anchoring flange extending
i downwardly from the forward edge of the main body and adapted to
; 15 be fitted on a corner of a stair.
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Another typical prior art protective stair edging
:: comprises a metal body provided with one or more cavities ~~
.: defined by upstanding retention projections, and a replaceable
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member for each cavity held in position by mating engagement
with the retention projections.
~he above-mentioned two types of prior art protective
- stair edgings have usually been secured to the steps of stairs
by means of suitable anchors.
However, these typical prior art protective stair edgings
have various disadvantages.
These prior art protective stair edgin~s are usually
produced having predetermined different cross~section configura-
tions and lengths on mass production scale and storaged inwarehouses until they are actually employed. In use, one
:~ .
continuous length o~ protective stair edging having a crosæ-
section configuration most close to that of a stair on which
the edging is to be installed is selected from those in storage
and a æecticn is of a length substantially equal to the width
of the stair cut off the remalning portion of the selected ; -
edging. Therefore~ these prior art protective stair edgings
have a relative limited range of application and there occurs
a substantial amou~t of materlal 108~ in the cutting operation
.~ . .
29 of these edgingsO
As a result, these prior art protective stair edgings
referred to above can be installed on only stairs, but not
employed on floors, sloped passages and the like where ~lattened
~; non-skid strips should be employed instead of the mono-purpose
protective stair edgingsO Furthermore, since these prior art
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protective st~ir edgings and usually available in a relatively
limited length range, there occurs a substantial loss in the
material when the edgings are cu~ ~o lengths equal to particular
widths of stairs on which they are installed and the prior art
protective stair edgings are not economical.
Therefore, one object of the present lnvention is to
provide a flexible non-skid strip which can be easily installed
on stairs9 floors, sloped pas~ages, statio~ platforms and the
like regardles~ whether the support ~tructures are Pormed of
WOodg steel, concrete or stone.
Another object of the present invention is to provide a
flexible non-skid strip a portion of which can be eaæily bent
in the longitudinal direction of the strip in conformity with
the configuration of the edge of a particular stair where the
strip is installed and which, once bent, will not return to
its original flat stateO
. ~ .
Another o~ject of the present invention is to provide
a flexible non-skid strip which can be simply installed on a
stair in a relatively short perio~ of time without requiring
any specific jig and which can be also easily replaced.
Another object of the present invention is to provide
a ~lexible non-skld strip which can be easily cut to a desired
~ize in its installation site without the generation o~ a
substantial material loss.
Another object oP the present invention is to provide
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a flexible non-skid strip for building which can be e~sily
installed even by any layman.
Another object of the present invention is to provide
a flexible non-skld strip which is adapted to be posi~LQned ~-'
over the edge of a stalr where most severe impact is imposed
due to treading pressure and which has a bent portion imparted
` with impact buffering property so as to reduce wear of the
strip.
- Another object of the present lnvention is to provide
;; 10 a flexible non-skid strip which is imparted with ~uch a
. .
;~ resilience so as to provide a comfortable treadlng feel~
, Another object oP the present invention is to provide ~ -
a flexible non-skid strip whlch is less subject to elongation
- and contraction due to variation in ambient temperature, which
'~ 15 can be positively prevented from being separated from a stair
'1 on which the strip is installed and which is so rigid that
:; ..................................................................... .
,: the strip may have a long service life~
; Another object o~ the present invention is to provide
a fle~ible non-skid strip which is less ~ubject to wear and
can retain its slippage preventi~n function for a long period
s of time.
.,
, Another object of the present invention is to provide
,jq' a flexible non-skid strip in the ~orm of a continuous length
;~ of narro~ web which can be rolled for storage and transportation.
Another object of the present invention is to provide
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a flexible non-skid strip which enables persons walking on a
staircase to discern the stairs and the width of the stairs under
adverse conditions such as power stoppage and the like at night
whereby they can walk on the stairs safely under such conditions.
A further object of the present invention is to provide
a process for continuously producing such flexible non-skid
strips.
A still further object of the present invention is to
provide an apparatus for continuously producing such flexible
non-skid stxips.
The above and other objects and attendant advantages
of the present invention will be more readily apparent to those
skilled in the art from the following description when read in
. . .
' connection with the accompanying drawings.
, .
Fig. lA is a perspective view of a preferred embodiment
`~ of flexible non-skid strip of the invention;
. . .
Fig lB is a perspective view of said strip of Fig. lA
in a rolled state; ,~
, Fig. 2 is a perspective view of said strip of Fig. i~
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as being installed on a concrete stair; .
- Figs~ 3A and 3B are cross~sectional views of a modified
embodiment sf flexible non~skid strip of the present invention
of which Fig. 3B shows the strip as being installed on a woode~
stair;
Figs~ 4A, 4B and 4C are cross~-sectional views of further
.~, , ,
: modified embodiments of flexible non-skid strip of the inven~
. ,
tion,
Figs. 5A and 5B are cross-sectional views of further
` 10 modified embodiment of Mexible non-skid strip of the invention
........... of which Fig. 5B shows the strip as being installed OII a
concrete stair;
~ Figs. 6A~ 6B and 6C are cross~sectional views of
.~` further modi~ied embodiments of f}exible non-skid strip of
.. . .
...` 15 the invention;
Fig. 7 is a perspective view o~ a further modified
embodiment of flexible non-skid strip of the invention with a
portion thereof cut away;
" Figs. 8A,:8B, 9A and 9B are cross-sectional views of
.,,~ ,. .
further modi~ied embodiments of flexible non-skid strip of the
invention;
,`' Fig~ 10 i8 a perspective view of a further modified
~`'. embodiment of flexible non-skid strip of the invention with a
.~ portion thereof cut away showing the strip as being installed :~
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on a wooden stair; -.
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Figs. llA, llB and llE are cross~sectional views of
further modified embodiments of flexible non-skid strip of
the inventio~;
Fig. llC iæ a cross-sectional view on an enlarged
scale of the fluorescent layer as shown in ~ig~ llB;
Figo llD is a sectional view taken substantially along
the line llD - llD of Fig. llB;
~ Figo 12 is a perspective view of a further modified
`~ embodiment of flexible non-skid strip of the invention with
a portion thereof cut away;
'i~ Figs. 13A, 13B, 13C, 13D, 13E, 13F, 13G, 13H, 13I, 13J,
13K, 13L, 13M, 13N, 14A and 14B are cross-sectional views of
further modified embodiments of flexible non-skid strip of
the invention;
`. 15 Figo 15A is a per~pective view of further modified
embodiment of flexible non-skid strip of the inYention with
a portion thereof cut away,
~ . ,.
Fig~ 15B is a perspective view on an enlarged scale of
~ said embodiment as shown in Fig. l~A with a portion thereof
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cut away and a portion thereof in section;
Fig. 16 is a perspective view of a modification of the
web sheet member employed in said embodiment as shown in Figs.
15A and 15B with a portion thereof cut away;
i Fi~s~ 17A~ 17B, 17C and 17D are perspective viewæ o~
`' further embodiments of flexible non-skld strip of the invention
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with a portion thereof in section and a portion thereof cut
away; -
Figs. 18A, 18B, 18C, l9A, l9B and 20 are cross-
- sectional views of further modified embodiments of ~lexible
; 5 non-skid strip of the invention;
Fig. 21 is a cross-sectional view of a ~urther modified
embodiment of flexible non skid strip o~ the in~ention comprising
three strips of Fig~ 1 formed in side-by-side arrangement;
Fig. 22 is a cross-sectional view of a further modi~ied
embodiment of flexible non-skid strip having the width
corre~ponding ~o the wldth of the tread of a sta~r;
Fig. ~3 is a schematic view of one embodiment o~
apparatus for continuously producing a flexible non-skid strip
according to the present invention;
' 15 Fig. 24 is a top plan view of said apparatus as shown
in Fig. 23;
Flg~ 25 is a longitudinally sectional vlew on an enlarged
scale of the metal mold of the apparatus as shown in Figs. 23
and 24;
Fig. 26 i~ a schematic view in side elevation of a
modified embodiment of apparatus for continuously producing
flexible non-skid strips according to the present invention;
Fig. 27 is a top plan view of sald apparatu~ of Fig.
Z6;
~- 25 Fig. 28 is a ~ide elevational view on an enlarged
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scale of the form~ng roll unit employed in the apparatus u~e~ul
in both the apparatus of Figs~ 26 and 27;
Fig. 29 is a front elevational ~iew on an enlarged
scale of said forming roll unit of Fig. 28;
Fig. 30 is a perspective view of a ~trip m~terial after
the material has been shape~ by the forming roll unit as shown
in Figs. 28 and 29;
Fig~ 31 is a longitudinally sectional view on an en~arged
scale of the metal mold use~ul in the apparatus as shown in Figs.
28 and 29; a~d
Fig. 32 is a schematic view in side elevation of further
modified embodiment of apparatus for conti~uously producing
` flexible non-skid strips according to the present invention.
,~ Re~erring to the accompanying drawings and more
particularly, to Figs. 1, 2A and 2B thereof, a preferred
embodiment of flexible non-skid ~trip produced by the present
, invention is generally shown by numeral 10 and has a flattened
semi~circular cross-section in the transverse direction. The
strip 10 include~ an elongated main body or rear portion 11,
, ~
'~ 20 a forward edge anchoring portion 12 extending parallel to and
spaced from the main body and a connection portion 13 interposed
between the main body 11 and edge portion 12 to integrally
connect them together.
The main body 11 is formed on the upper surface with
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,~ 25 any suitable non-skid top surface portion such as serrations 14
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: extending along the entire length of the body and the connection
portion 13 is designed to have a thic~ness smaller than the
main body 11 and forward edge portion 12. For the purpose,
the bottom of the connection portion 13 is formed with a semi-
~; 5 circular groove 15 opening downwardly and extending along the
entire length of the portion 13~ '~he ~orward edge portion 12 ;~
has the upper surface sloping downwardly and forwardly or
smoothly decreases its thickness toward its extreme ~orward
, edge thereo~. The strip 10 having the construction as m~ntioned
above may be produced by integrally extruding any suitable one
.,
~7 selected from thermoplastic synthetic resins such as vinyls,
chlorides5 polyolefin~, celluloses and synthetic rubber.
. The flexible non;skid strip 10 is installed on a ;:
: concrete stair 230 as shown in Fig. 2. In the in~tallation : .
-~ 15 of the strip9 a suitable adhesive 16 is first applied on
fixing areas 233 and 234, of the tread 231 and riser 232 of
r the stair which are connected together by the edge 235 at
right angles to each other and the strip 10 i~ then applied
on the stair 230 with the main body 11 positioned on the
. .. .
adhesive-applied area 233 and the groove 15 positioned over
. the edge 235.
~hereafter, the ~orward edge portion 12 is bent downwardly
: at the juncture between the forward edge portion 12 and the
`: connection portion 13. The bending of the forward edge portion
12 is assisted by the presence of the groove 15. Finally~ a
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suitable pressure is applied on the main body 11 and forward
edge portion 12 so as to cause the parts of the strip to adhere
to the tread 231 and riser 232 of the stair 230, respectively,
whereby the strip 10 is held in position on the stair 230. A
pressure sensitive adhesive tape having a release paper may be
applied to the bottom o~ the strip 10 coverlng the main body
11, connection portion 13 and edge portion 12 to provide a
pressure sensitive adhesive layer and in such a case, the
application of the adhesive 16 to the stair 230 can be eliminated.
As mentioned hereinabove, since the strip 10 has the
flattened fiemi-circular cross-section as seen in the transverse
direction and includes the thinned connection portion 13, prior
to the use of the strip 10, the strip can be rolled for easy
storage and transportion as shown in Fig. 18. In use, when it
is assumed that the forward edge portion 12 is bent downwardly ;~
and the adhesive 16 is applied to the stair~ the strip neither `
requires any specific curing jig, nor a long curin~ time. Thus, `~
.
the installation operation of the strip 10 can be carried out
in a brief peri~d of time. Especially, when the ~trip 10 itself
includes the pressure sensitivs adhesive tape, the steps of ;~
."
application of the adhesive 16 to the stair 10 and of curing
the adhesive 16 after the installation of the strip so a~ to
caufie the strip to adhere firmly to the stair can be eliminated.
Furthermore, the possibility of application of the adhesive 16
at area~ other than the portions 233 and 234 of the stair tread
- 12 -
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and riser 231 and 232 which may occur during the app}ication
of the adhesive to the portions 233 and 234 can be prevented.
Furthermore, since the connection portion 1~ includes
.
the groove 15 which is positioned over the edge 235 of the
stair 230 when the strip 10 is held in position, the connection
; portion 13 which is adapted to subjected to higher treading
impact than the other parts of the strip is imparted thereto
an impact absorption capability whereby wear on the strip itself
can be reduced and the strip can enjoy a prolonged service
~^ 10 life and has a comfortable treading feel~
; Furthermore, since the strip 10 is adapted to be
directly adhered to the stair 230, the installation of the
strip can be quite easily effected and the strip can be
~` installed on a wide variety of structures such as ætairs in
,", . ~ .
~5~l 15 ships, floors, sloped passages, station platforms and general
:~......................... . .
~ housest wooden stairs as well as concrete, stone and steel
:.,
stairs where the strips are generally installed~ ~nd the
installation of the~strip 10 can be easily effected by any
unskilled person~
Furthermore, when the strip 10 is produced in an
indeflnite length and rolled, the rolled strip is conveniently
; storaged and transported. The~, a desired section can be cut
o~f the rolled strip in conformity with the width of a stair
- on which the strip is installed.
Figs. 3A and 3B sho~ a modified embodiment of strip 30
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which is substantially similar to the strip 10 in Figs. lA, lB
and 2 except for the forward edge portion 31 and connection
portion 32~ Therefore?~ the parts corresponding to those of
the first embodiment are shown by the same numerals ~nd
description thereof are omitted.
In the modified ~trip 30, the connection portion 32 has
a relatively wide groove 34 of rectangular cross-section in the
bottom thereof and the forward edge portion 31 extends alon~ ;
the free edge 33 of the connection portion 32 at right angles
. . .
~ 10 with respect to the connection portion to the bottom ~urface
`~ of the main body 11 having serrations 14 on the upper surface.
~....................................................................... .
As shown in Fig~ 3B, the strip 30 is conveniently
installed on a step 236 comprising a tread plate 237 thereon.
In the installation of the strip 30, first of~all, a suitable
' 15 adhesive 16 is applied on the entire bottom surface of the ;
str~p including the main body 11, forward edge portion 31 and
connection portion 32 and then the strip is positioned on the
tread plate 237 with the inner face o~ the forward edge portion
31 engaging the underside of the forward end of the tread
.;. ~ . .
~ 20 plate followed by the pressing of portions of the forward edge i
. .~ .
and connection portions against the forward end of the tread
plate through the adhesive 16. Finally7 the remaining portion
of the connection portion 32 i8 bent 30 as to embrace the
;~ forward end and the m~in body 11 i~ pres~ed against the treading'
.'J 25 surface of the tread plate through the adhesive 16~ ;
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~L~5 1L153
r Figs. 4A, 4B and 4C show fur-ther modified embodiments
of the invention. In the strips 40a, 40b an~ 40c shown in
these Figures, the connection portions have cross~sections
di~ferent ~rom that of the corresponding part of the strip 10
and the remaining parts of these modifled embodiments are
subst~ntially similar to the corresponding par~s of the first
embodimentO There~oreg the corresponding parts are shown by
the same numerals and description o~ these parts are o~ittedO
~irst, referring to Fig. 4A, the connection portion 41a
lQ i~ provided with a groove 15 extending in the length of the
connection portion and a slit 42 is defined in the bottom of
the connection portion by a pair of flanges 45 and 46 extending
from the opposite edges 43 and 44 of the main body and forward
-~ edge portion toward each other and lying on -the same plane as
lS the bottom of the strip 40a~
In the strip 40b of Fig. 4B, the connection portion 41b
,:
which connects between the main body 11 and the forward edge
portion 12 has an opening 47 of oval cross-section therein
extending along the length of the connection portion.
". - . . .
In the strip 41c of Fig. 4C, the connection portion 41c
~; has a cut 48 in the bottom extending upwardly to an opening 47
of o~al cross-section. Alternati~ely, the cut 48 may be
eliminated if the flanges ~5 and 46 are extended until the
free ends of the flanges contact each other.
Figs. 5A and 5B show a further modified embodiment o~ the
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invention and the strip of these Figures i~ 6enerally shown by :~
` numeral 50. In the strip 50~ the connection portion 51 which
; connects between the main body 11 and forward edge portion 12 :
.~ has a groove 52 of rectangular cross-section in the bottom
~ 5 extending in the length of the connection portion~ Furthermore,
the main body ll al60 has a pair of spaced and parallel grooves
53 and 54 similar to the groove 52 in the connection portion -
~: extending in the length of the main body so that the m~in body
. will have an improved shock absorption ability~ In Fig. 5B, ~ :
the strip 50 of Figo 5A is shown as being installed on a concrete .
stair~ In the inætallation of the strip 50, first, a suitable
adhesive 16 i~ appli~d on the bottom surface of the strip 50
and the strip i~ then applied on the fixing portion 233 of the
tread 231 of the stair 230 with the groove 52 in the connection
portion 51 pos~tioned over the edge 235 of the stair 230.
Thereafter, the connection portion 51 is bent downwardly until
~:: the groove 52 will embrace the ~tair edge 235 and the forward ~` :
... . .
edge portion 12 will contact the fixing portion 234 of the
riser 232~ Finally~ the Rtrip 50 is adhered to the stair by
., ~ .
pres~ing the strip against the stair 230 through the adhesive
~ 16.
.;; Figs~ 6A, 6B and 6C show further modi~ied embodiments
; of the invention which are substantially similar to the strip
.
50 as sho~n in Figs. 5A and 5B except for that the cross-
~:~,!'. 25 section configuration and number of the grooves in the strip
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50 of Figs. 5A and 5B are different. The remairling parts of
the embodlment of Figs. 6A, 6B and 6C are substantially
similar to the corresponding parts of the embodiment of Figs~
5A and 5B and are shown by the same numerals. Thus, descrip~
tion of the si~ilar parts of the embodiment of Flgs. 6A, 6B
and 6C are omitted. And since the manner in which the embodi-
ment of Figs. 6A, 6B and 6C is installed on a ~tair is the
same as that o~ the embodiment of Figs~ 5A and 5B, description
of the installation manner of the embodiment of Figs. 6A, 6B
and 6C are also omitted.
In the strip 60a of Fig. 6A~ the connection grooves
62a and shock ab~orbing grooves 63a and 64a provided in the
bottoms of the connection portion 61a and main body 11 are of
a trapezoid cross-section~ In the strip 60b of Fig~ 6B, the ~ ;
connection groove 62b and shock absorbing grooves 63b and 64b -`
provided in the connection portion 61b and main body 11,
respectively, are of a dovetail cross-sectionO In the strip
60c of Fig. 6C, the connection groove 62c and shock absorbing
groove 63c provided in the connection portion 61c and main
body 11, respectively, are of a relatively large radius semi-
circular cross-section.
The strip 70 of Figo 7 has a modified connection portion
s 71 of an arcuate cross-section which is different from the
corresponding parts of the preceding embodiments and an adhesive
layer comprising a pres~ure sensitive tape 72 having a release
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paper 73 is applied on the entire bottom surface of the strip
70 D : '
The strip 70 also includes -the main body 11 having
~- the non-skid top surface portion or æerrations 14 and forward
edge portion 12 connected to the main body by the connection
portion 71 having the arcuate cross-section. Furthermore,
the strip 7Q-includes the pressure sensltive adhesive layer
having the release paper 72 applied on the bottom ~urface
thereof~ The center area of the connection portion 71 project
above the upper sur~aces of the main body 11 and forward edge
portion 12 and the thickness of the connection portion 71 is
smaller than that the main body and forward edge portion 120 -~
In the installation of the strip 70, fir~t, the release
paper 73 is removed from the strip 70 and then, the main body
... .
11 is placed onto a portion of the tread of a stair with the
concaved side o~ the arcuate cross-section connection portion
't`. 71 po~itioned over the edge of the ~tair. Since the succeeding
steps in the installatlon of the strip 70 are substantially
,
` similar to that described in connection with the strip lOa
; 29 description of such ~imilar step~ are omitted. A~ mentioned
hereinabove, since the connection portion 71 projects above
the main body 11 and forward edge portion 11, the arcuate
i connection portion 71 can be employed as the reference again~t
the stair edge when the strip 70 is posit~oned on the stair.
The strip~ 80a and 80b of Figs. 8A and 8B have connection
i
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portion modified from the corresponding part o~ the strip 70
of Fig~ 7 and the remaining parts of this embodiment are
substantially similar to the corresponding parts of the
embodiment of Figo 7. Therefore, the similar par-ts of the
embodiment of Figs~ 8A and 8B are shown by the same numerals
and description of them are omitted.
; The connection portions of the strip~ 80a and 80b of
Fig~. 8A and 8B have different cross-section configurations
from that of the corresponding part of the embodiment of Fig.
7 and in these Figures, the pressure-sensitive adhesive layer
i~ not shown.
In the s~rip 80a of Fig~ 8A, the connection portion 81a
which has a arcuate upper portion 82a is of an arcuate cross~
.:.
section having a thin thickness and the bottom of the arcuate
connection portion 81a i~ de~ined by a pair o~ thin flanges 83a
and 84a extending from the opposite lower edges of the main
body 11 and forward edge portio~ 12 into the semi-circular
cross-section cavit~ defined by the arcuate configuration of
~ the connectio~ portion 81a.
; 20 In the strip 80b of Fig. 8B7 the connection portion 81b
~ which has an arcuate upper portion 82b defines an arcuate
":
; cross-section cavity therein and the bottom of the cavity i8
closed by a thin sheet-like cro6s piece 85.
^ With the provision of the thin flanges 83a, 84a and
... .
sheet-like cross piece 85 in the strips 80a and 80b, respectivelyg
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after the installation of the strip on a stair, the ~trip i~
prevented from being displaced at the connection portion with :
respect to the stair when the strip is subjected to treading
pressure.
The strips 90a and 90b o~ Flgs. 9~ and 9B are modifica,-
tions of the strip 70 of Fi~o 7. The strips 90a and 90b are
shown with the pressure sensitive adhesive layer removed
; therefrom. The installatlon manner of the strips 90a and 90b
is simllar to that ~or the embodiment of Fi~. 7 and de~criptio~
: -:
of the in~tall~tion manner of these modiied strips are omitted.
The strip 90a of Fig. 9A further includes the main body . '~
'` 11 having the non-skid top ~urface portion or serrations 14 :.' ' ,.
and the ~or~ard edge portion 12 co~nected to the main body by . .
the connectio~ portion 71 of arcuate cross-section similar to
. 15 the corresponding part of the strip in Fig. 7. ~he top surface
, portion 14 and arcuate cross-section connection portion 71 are '
formed of a high wear-resistance synthet~c resin such as
. ur~thane or polyamid, for example, to provide an upper layer , --.'
91 and the remaining portion of the main body 11 and the
. . .
:~ 20 forward edge portion 12 are formed of a flexible synthetic :,
; resin such a~ non-rigid vinyl chloride~ The upper layer 91, ',
, the main body 11 and forward edge portion 12 are secured
' together into a unitary structureO ` `
If the sur~ace layer 91 has a di~ferent color fro~ .
the color of the.,remaining portion of the main body 11 and
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forward edge portion 12, wear on the sur~ace layer is visible
- if any and accordingly, the time when the strip 90a should be
replaced can be determinedO The multicolored ætrip has
aesthetical appearance. ~ ,
The strip 90b of Fig. 9B includes the main body 11
having the non-skid top surface portion or serrations 14 and
forward edge portion 12 connected to the main body by the
connection portion 71 o~ arcuake cross-sectlon as in the
embodiment o~ Fig~ 9A, but has an integrally formed laminated
construction, that is, the strip of Fig. 9B including the
serrations 14 and the upper layer 92 formed o~ a high wear-
resistance synthetic resin such as urethane or polyamid and
~, the lower layer 93 constituting the remaining lower portions
... .
~; of the main body9 forward edge portion and connection portion
~r~ 15 ll~ 12 and 71 formed of a flexible synthetic resin such as
non-rigid vinyl chloride. The upper and lower layers may
different colors so that the strip 90b provides the same
effects as the strip 9a does.
,~ Fig. 10 shows a further modification of the strip 70
..,
-; 20 o~ Fig. 7. The strip 100 includes the main body 11, forward
~, edge portion 12 and connection portion 71 o~ arcuate cross- ;
section connecting between the main body and forward edge
; portion. The main body 11 has two sets o~ longitudinally
i~ extending serrations 14 thereon in a spaced relationship to
- 25 each other a~d a plurality of longitudinally extending fluorescent
.. :
- 21 -
:,
,
...
~5~53 : :~
layers 102 and 103 in the form of a strip are embedded in the
upper surface of the main body and forward edge portion,
respectively with the upper surface exposed.
In the installation of the strip 100, first, a suitable
adhesive 16 is applied on the underside of the strip 100 and
then, the strip is placed on the tread 231 of a stair 230 with
the connection portion 71 positioned o~er the edge 235 of the
~- stair ~30. The succeedlng steps of the installation ara the
same as described in connection with the installation o~ the
strip 10 of Fig~ 1 and description of such steps is omitted~
Since the strip 100 includes the fluoresce~t layers
102 and 103 embedded in the upper surface~ when the strip 100
is held in position on the stair 230, even if power supply is
stopped in case of emergency ~uch as fire occurrence and power
stoppage at n~ght, the width of the stairs and/or the distance
between adjacent stairs can be discerned and therefore, the
; strip 100 provides safety characteri tics~ Although the
fluorescent lagers ars shown as being positioned at the rear
edge of the main b~dy 11 and at the ~orward edge portion 12~
it may be sufficient to provide the fluorescent layer 102 or
103 either at the main body or forward edge portion as desired~ ;
Figs. llA, llB9 llC, llV and llE show modifications of
the strip 100 of Fig. 10 and in the embodiments of these
Figures, the position and construction o~ the fluorescent laysr6
Z5 are modified. The remaining parts of the strips llOa, llOb, ~
'. :.
;;' ~' :
- 22 - ;
.,,, ~ .
.. '` ' .
,'. '
,.......................................................................
~.
-; . ~ . : . .
153
llOe are shown by the same ~umerals as those used for the ~ -
corresponding parts of the embodiment of Fig~ 10, and the
manner in whichi~the strips llOa, llOb and llOe are installed
is similar to that for the strip 100 of Fig. 10. Therefore~
- 5 description of the corresponding parts and the installation
manner of these strips are omitted~
The strip llOa o~ Fig. llA has fluorescent layers 113
.: and 114 embedded in the rear edge 111 of the main body 11 and
in the extreme forward edge 112 o~ khe forward edge port~on :~
10 11, respecti~ely.
, ~ ;
; The strip llOb of Figso llB~ llC and llD has ~luorescent
. layers 115, 115 integrally formed in the main body 11 at the~'
; rear edge 111 thereof and forward edge portion 12~ respectively
and the upper surface o~ the layers 115 is e~posed to the
- 15 upper surface of the main body 11 and forward edge portion 12
Each of the fluorescent layers 115 comprises an
elongated channel 116 of U-shaped cross-section, a fluorescent
material strip 117 received in the channel and a transparent
. covering strip positioned over and secu~ed to the fluoresoent
; 20 material strip.
. :
. The elongated channel 116 is formed of a flexible
.~ synthetic resin having titanium dioxide and a pigment such as
white lead blended therewith, the fluorescent material strip
117 is formed of a transparent synthetic resin sheet having a
fluorescent pigment blended therewith and the transparent
~ .
` ,
- 23 _
'' : .
..
. -- . .
1~5~53 :
. covering strip 118 is formed of a transparent synthetic resin ~. .
'! ' .
having a ultraviolet ray absorption agen~ blended therewith.
Therefore, the fluorescent material strips 117 of the
fluorescent layers 115, 115 are protected against the staining
... . : ..
- 5 by mud and dirt ~rom the footwears of persons who walk on
stairs where the strips are in~alled and also prevented from
being removed from the main body 11. Furthermore, since the
fluorescent material strips 117 are received in the channels
116, ultra~iolet rays are prevented from passing through the
fluorescent material strips 117,
.~ The strip llOe of Fig. llE is substantially similar
~ to the strip 100 of Fig. 10 except for that the main ~ody has
.: .. .
three longitudinally extending fluorescent layers 102, that
is, the main body further has one fluorescent layer 102 between ~ .
15 the arcuate connection portion 71 and the adjacent non-skid
.` top surface portion or serrations 14 and another fluorescent
~ i .
.:. layer 102 between the two no~-skid top surface portions or .
. . . .
serrat~ons 14~ ~he two additional fluorescent layers 102 are
adhered to the upper surface of the main.~body llo Therefore,
~ . . ..
the fluorescent layers 102 are prevented ~rom being directly ~ ~
:
contacted by the footwears of persons who walk on stairs where
the strips are installed, are sub~ect to less wear due to
treading pressure and can en~oy a longer service life. :
; Fig. 12 shows a further modification of the strip 70
f Fig. 7 and is shown by numer~l 120~The strip 120 includesA :.
., ,;
.,.,. .~ .
:
;.;
. :.
- 24 - ~
." '~
.,~ .
, .
.,,
.
'~'
,: :
,.,; ., - . : ,
1(~5~L53
:: the main body 11 formed of a flexible synthetic re~ orward
edge portion 12 and connection portion 71 of arcuate cross-
section connecting between the main body 11 and forward edge
portion 12~
The main body 11 has the non~skid top surface portion
or serrations 14 on the upper surface thereof and a web sheet
`~ 121 which may be ~ormed of rigid synthetic resin, cloth or
metal a~d has an area containing the main body 11, forward
edge portion 12 and connection portion 71 is integrally formed
with the under sur~ace of the strip 120
The web sheet 121 serves to impart rigidity to the
strip against the elongation and cont~ation of the strip
whereby the retention of the strip on a s-tair is improved.
:~ Metals of which the web sheet may be formed include alu~inum,
copper, steel and stainless steel. Furthermore, a pressure
sensitive tape 122 including a release paper 123 is applieA ~
on the underside of the web sheet 122.
- The strip 120 can be also rolled as in the sa~e o~ a ~
hoop and the installation of the strip 120 is the same as
that described in connection with the strips 10 and 70 of Figso
1 and 7 and description o~ the inst~llation manner of the
strip 120 is omitted~
Figs. 13A through 14B inclusive show various modi~ica-
~ tions of the strip 120 of Fig. 12 and these modified strips. 25 are shown by numerals 130a, 130b, 130c, 130d, 130e, 130f, 130gg
.,; ~., .
,''''' ~
., ,
~. ,.
,,: '
. . . ., , . :
., . . : ....
. . , . . . ~,
`~ ~
~L~351~53
130h, 130i3 130j, 130k, 130~, 130m, 130n, 140a and 140b,
respectively~ The strips have web sheets 121 inte~rally
; secured to the undersides of these strips or the grooved
undersides with web sheets 131d, 131gg 131i~ 131J, 13Ik,
131~ and 131m integrally secured thereto. These web sheets
have configurations in com~ormity with particular configurations
of the undersides of the strips to which the sheets are secured. ~ -
In each of the strips shown in these Figures, the pressure
sensitive adhesive tape 122 including the release paper 123 is
lQ elimina-ted. The remaining parts of these modified strlps are
shown by the same numerals as those used for the corresponding
parts of the strip 120 and description of khe corresponding ~ -
parts i5 omitted. The manner in which these strips are
installed on stairs is the same as that for the strip 120 and
description of the same is omitted.
The strip 130n of Fig. l~N has the under surface which
is a modi~ication o~ that of the strip 50 o~ Fig. 5A and has ~-
a web sheet 121 is integxally secured thereto~
The strip 140a of Fig~ 14A has a web sheet 141a
i~tegrally secured to the underside and the web sheet is
similar to the web sheet 131c on the strip 130c of Fig. 13C~
but has a plurality of holes 142a~ The strip 140b of Fig.
14B includes a modification of the holed web sheet 141a of
the strip 140a shown in Fig. 14A and ~he modified web sheet
141b on the strip 140b of Fig. 14B has a pluralit~ of spaced
, . .:
?;
~ 26 -
,
",
,. . .
.,j :.
, :,
!.', :
~, ';
.'~ ' .
~; ' ' ' . ' `:
.~',' , . . . ' .
, . . . .
S~ 3
reversed U-shaped projections 1~3b received in the mating
recesses in the main body and extending in the length of the
strip~
Similarly~ the web sheets employed in the ~trip~ of
Figs. 13A, 13B, 13D - - 13N can he replaced by the holed web
- sheets 141a and 141b employed in the strips of Figs~ 14A and
14B~
The strip 150 of Figso 15A and 15B includes a modifica-
tion of the web sheet 131c employed in the strip 130c of Fig.
.
13C. The remaining par~s of the strip 150 are shown by the
same numerals as those used for the corresponding parts of
the strip 130c and description of thesa corresponding parts
is omittedO Similarly~ slnce the manner in which the strip 150
is installed on a stair is the same as that for the strip 130c,
description o~ the installation manner of ~he strip 150 is
,` omitted.
The web sheet 151 of the strip 150 has a plurality of
~paced ~rcuate engaging projections 152 formed by a press for
engaging in the corresponding recesses in the underside of the
strip 150. The engaging projections 152 define open cavities
therein into which the material of the main body 11 of the strip
150 flows when the web sheet 151 is integrally ~ormed together
; with the mai~ body so that the mai~ body and web sheet can be
; firmly held together against separation frsm each other. ~-
The web sheet 155 shown in Fig~ 16 i~clude~ a modification
. :,
- 27 -
.. ~ ',
. '
, ', ':
....
, :~
~ 3
of the web sheet 151 employed in the strip 1~0 of ~ig~ A
and 15B~ The configuration of the modified web sheet 155 is
suitable when the web sheet is formed of a synthetic resin
having a low adhesion ability to the flexible synthetic resin
o~ which the rnain body~ forward edge portion and connection
portio~ are formed.
The web sheet 155 has three suitably spaced engaging
means 156 on the upper sur~ace thereo~ extending in the
longitudinal d~rectione The engaging means comprise webs 157
and narrow flanges 158 integrally formed with the tip ends of
the webs. The provision o~ t~e engaging means 156 on the web
sheet 155 effectively prevents the strip and web sheet from
separating from each other.
The strips 170a~ 170b, 170c and 170d of Figs. 17A
through 17D are modifications of -the strip 120 of Fig. 12
and the pressure-sensitive adhesi~e layer of these strips is
not shown in these FiguresD Since the strips 170a, 170b, 170c
a~d 170d are installed in the same manner as that for the
; strip 120 o~ Fig~ 12, the installatlon manner for these
modified strip~ is omitted.
Each of the strips 170a~ 170b, 170c and 170d includes
the main body 11, forward edge anchoring portion 12 and arcuate
connection portion 171 connecting between the main body and
forward edge portion together. The main body 11 has two spaced
sebs of non-skid top surface port~ons or serrations 14 formed
, .
"
.,. :''
- 28 -
.," .
,:
. . .
~ 3
'' on the upper sur~ace and extending in the length of the strip and two holes 172 of rectangular cross-section positioned
below the serrations 14 extending in the len~th of the strip.
Furthermore, in order to prevent the strip and web
sheet from separating from each other, in the strip 170a o~
Fig~ 17A7 the opposite longitudinal edges 174 and 175 of the
web sheet 173 are bent upwardly above the plane of the rest
'` of the sheet and embedded in the main body and forward edge
portion, respectively~ In the strip 170b o~ Fig, 17B~ the
web sheet 173b has a plurality o~ spaced engaging projections
,, 152 of angular shape which ser~e in the same ~anner as the
,~
,'~ engaging projections 152 of the web sheet 151 i~ the strip 150
,
', shown in Figs~ 15A and 15Bo The projectio~s 176 are formed, -'
, by a press. The projections 176 have through holes 177 ~hich
serve in the same manner as the holes 153 in -the engaging
"', pro~ections 1520 In the strip 170c o~ Fig. 17C, the web sheet ~'
,....................................................................... .
,', 173c has a plurality of spaced rows of holes 178 adjacent to
, ...................................................................... .
,,'~ the opposite edges each comprising a plurality of holes 178a. ',
'~ In the strip 170d of Fig. 17D, the web sheet 173d has the
op~posite edges 174d embedded in the main body 11 and ~orward
,j edge portion 12, respecti~ely. The ~eb sheet 173d for the
"; strlp 170d of Fig. 17D has on the upper sur~ace a upward
pro~ection 179 extending in the longitudinal direction of the
',; strip so as to engage ln the cavity defined by the connection
~, 25 portion 171 whereby in the lnstallation of the strip, the
,, ~
,,,.i . .
, _ 29 ~
~.. , ~.,:,
., ~.,~ .
.,. . ~'.
.. '.' ~
., .
i~Sl~lLS3
positioning of the strip with respect to the tread of a stair
and the bending of the ~orward edge portion are assisted.
Furthermore7 the shape, arrangement and number of the
above--mentioned engaging projections and engaging hole~ can
be varied in various ways and the combination of the projections
a~d holes can be also varied in various ways within the scope
of the invQntion.
In each o the strips 180a, 180b~ 180Ca 190a and 190b ::
shown in Figs~ 18A through 19B, in order to impart rigidity
to the strip~ each of the web sheets 181a, 181b, 181c, l91a
and l91b is entirely embedded in the associated stripO ~he
web sheets 191a and 191b for the strips 190a and l90b shown
in Figs. 19A and l9B each comprises a plurality of web sheet
elements 192a and 192b, respectively.
The strip 200 shown in Fig~ 20 employs a web sheet 201
having a center upwardly bent and horizontally extending
portion 202 embedded in the strip a~d extending in the
:
- longitudinal direction of the strip~
-~ The remaining parts o~ the strips 180a9 180b, 180c,
i~ 20 l90a, l~Ob and 200 are shown by the same numerals as those
used for the corresponding parts of the strips of Figs. 1, 5A,
~? 7 and 17B. The ma~ner in which the strip 200 is installed is
the same as that for the strips shown in Figs. 1, 5A, 7 and
... .
17B and description of the installation manner is omitted.
As to ~he materials of which the above-mentioned strips
,,,, .
., .'
. . .
.,, .~ .
, ...................................................................... . .
.. ~
;
~ ~51 ~ ~ 3
are formed, the main body, forward edge portion and connection
portion are preferably formed of flexible thermoplastic
synthetic resins such as non-rigid vinyl~, chlorides, polyolefines
or celluloses. The non-skid top surace portion and web sheet
are preferably formed of any one selected from hi~h wear-
resistance synthetic resins such as urethane and polyamid if
the parts are deæ~red to have a high wear-resistance property.
The web sheet is preferably ~ormed of hard synthetic resin,
cloth9 aluminum, copper, steel or stainless steelS but may be
formed of a porous sheet metal9 porous steel sheet or expand
metal.
Fig. 21 shows a strip assembly 210 comprising three
strips 10 similar to that shown in Fig. 1 arranged in juxtaposed
relationship. The part~ corresponding to the parts of the
strip 10 are shown by the æame numerals and description of
the same is omitted~ When the strip assembly 210 is employed
~or covering thewholearea of the tread of a stair, a floor or ;
a sloped passage~ the installation operation of the strip
assembly can be ef~ected promptly and easilyO In such a case, 20 a finish operation for the stair tread, floor or sloped passage
can be eliminated.
The strip 220 of Figo Z2 has the main body 221 the
width of which is designed to be equal to the width of the
tread of a stair and the upper surface of the main body is
-. 25 formed with alternate conca~es and convexes 224~ The remaini~g
.'; ,
. , ',': -
_ 31 -
'~ '
:
-. . .
~lO51~S3
parts of the strip 220 ~re similar to the corresponding parts
of the strip 10 of Fig. 1 and shown by the same numerals as
those used for the corresponding parts o~ the ~trip 220.
- Since the main body 221 has the width substantially corresponding
`~ 5 to that of the stair tread where the strip is installed, when
held in position, the whole area o~ the stair trend is imparted
non-skid property. When the upper~;sur~ace o~ the main body
` 221 is patterened with a particular design, the skrip not only
produces an aesthetical ef~ect, but ~an eliminate the use of
a carpet as well as a ~inish on the stair tread~ Since the ;;
installation of the strip 210 on a stair is the same as that
for the strip 10, descrlption of the installation manner is
.. ; .
,r, omitted~
: .~
Figs. 23 through 25 illustrates a process and apparatus
; 15 for continuously extruding an indefinite length of flexible
i:. .
.r.~'~ non-s~id strip 300 from which discrete ~trips are sheared~ The
flexible non-skid strip 300 comprises a continuous length of
flexible lower layer 301 formed of a continuous length o~ ~eb
~: .
sheet material 303 which can be rolled into a hoop and a
synthetic resin flexible no~-skid upper layer 303 including
the main body, forward edge portion and connection portion of
each strip. The upper layer is formed by continuou~ly and
ntegrally extruding a~synthetic resln onto the moving lower
,, layerO '`' '
In carryi~g out the process of the invention on the ~;
~....................................................................... . .
. ,.~ .
. .;. . .
32 -
, .
, . . .
.. .
- . . . . ; .
:` -
;~S~:~L53
illustrated appar~tu~ of the invention, fir~t o~ all, a rolled
web sheet 302 formed of rigid synthetic resin or cloth is
continuously payed out from a supply roll 310 of feed means
in increment ~nd passed over heating means 331 positioned
below the path o~ the sheetO A~ter having pa~ed over the
heating mean~ 311, the sheet 302 advances to and through the
inlet 328 of a split die 325 mounted on a crosshead 324 in an
', extruder 320D
The heating means 311 is adapted to pre-heat the
flexible lower layer 301 so that the upper layer 303 which is
adapted to be integrally secured to the upper layer can be
prevented from displacing relative to the lower layer~ The
", split die 325 comprises an upper mould 325a and a lower mould
325b defining a sheet passage 329 therein and having the
inlet 328. An upper layer application passage 330 is in -
communication with the inner e~d of the passage 329 and has ,,
' the outlet 331. '
:~ A granular non-rigid vinyl chloride having plasticizer,
`' stabllizerS lubricant and flller blended therewith i~ supplied
at a hopper 321 into a heating cylinder 322 of the extruder
3200 The non-rigid,vinyl chloride is advanced through the ',,
,, cylinder 322 by a rotating screw 323 with the cylinder 322. As
the vinyl chloride is advanced through the cylinder, the ,~
material is fused and the ingredients of the material are
~ 25 kneaded together. The fused and kneaded material is passed to
,~, .:
'~,
~" '
, ' .
~ 0 ~ 3 ~;.
: and through a manifold 326 formed in the upper mould 325a ofthe die 325" The fused material then passes to and through a
downwardly inclined passage ~27 extending from the manifold
326 and terminating at the upper layer application passage 330
and enters the passage where the fused material ls applied
o n the moving sheet 302 under pressure.
The cross-sectional configuration o~ the application ::
passage 330 and out~et 331 is determined depending upon the
.~ ~
. cross-,sectional configura.tion o~ the flexible non-skid strip
,. 10 300 to be produced. After having issusd through the outlet
~ 331, the hot l~minated strip 300 pas~es to and through a
. .
~ cooling tank 332 containing water where the strip is cooled. ~
;
~.~. Afte~ having passed through the cooling tank 332, the laminated
; ~
strip 300 passes betwee~ haul-off rolls 333 and 334 of a ~.
haul-off gear to be guided thereby to coating means 340 where
the underside of the ~trip 300 is continuously coated with a . :~
pressure sensitive adhesive agent. After having bee~ coated
,:~ with the adhesive agent, the strip is advanced to release : .
. paper application means where the underside of the coating ~.
,. ~ !
;3~' 20 adhesive agent is continuously applied thereon a release paper
304 supplied from release paper supply means 350 by means of
press rollers 351 and 352. Therea~ter, the strip 300 is
.~ advanced to a take-up reel 353 to be rolled thereabout~ The
.` above~mentioned coating means 340 includes a dipping tank 341
containing pres6ure-sensitive adhesive agent, a supply roll
i .:
:
i - 34 :
,, :
~.
.
.: ,
~ ~ S~ ~ S 3
~ 342 and an spreading roll 343.
Figs. 26 through 31 show a modified process and apparatus
;~ for continuously extruding a laminated flexible non-skid strip
~: 360 according -to the present invention. First of all, a
5 continuous.length of web sheet 362 formed of aluminum~ copper,
steel or stainless steel and constituting the lower layer of
~.: the laminated flexible non-skid strip is continuously payed
out of a supply roll 310 of geed means in increment and passed
to and through forming means where the sheet is passed between
upper and lower forming rolls 370 and 371 which form angular
. projections 305 on the upper surface of the sheet in two rows ..
e~tendirlg in the lo~gitudinal direction. If a web sheet 380
as shown in Flg. 28 is desired, form~ng rolls useful ~or the
purpose may be selected as desiredO
The formed sheet 362 is then passed over heating means
- ;
.~311 and further advanced to and through the inlet 328 of a ::
split die 325 supported on a crosshead 324 of an e~truder 320. .~.
~; The extruder 320 is charged through a hopper 321 with a gra~ular :
non-rigid vinyl chloride havi~g plastîcizer, stabilizer,
. 2Q lubricant and filler blended therewithO The non-rigid vinyl
. chloride is advanced from the hopper 321 into a heating cylinder
322, As the vinyl chloride is advanced through the cylinder : :
. 322 by a screw 323 positioned within the cylinder, the vinyl
: chloride is fused and the ingredients of the material are kneaded
25 together. The fused vinyl chloride is passed to and through a
., :.
35 -
,
;''', ' '
... .
~ - ~ , .. ...
--
~51~S3
manifold 326 formed in the upper mould 325a of the die 325
under pressure~
.; The fused material is then passed through a passage
:"i,
.. 327 extending from the manifo}d 326 and terminating at the
~,; ..
~ 5 inner end o~ a sheet passage 32g having the inlet 328 into an
`~'',f, ' upper lAyer application passage 330 which has the outlet 331
~ and is in communication with the inner ends o~ the pas6ages :~
... . .
327 and 329~ In the application passage 330, the fused vinyl
chloride is applied onto the moving sheet 362 from the pa6sage ::
under pre6sure to thereby form the flexible non-skid upper
~'~ layer 363 on the sheet 362 to produce the strip 360~ After
~`f ' . .
.- having issued from the outlet 331t the hot laminated strip 360
~ is passed through a coolin~ tank 332 to be cooled thereby and
f~,',' then pa~sed to and between haul-off rolls 333 and 334 to be
~;.,; 15 advanced to tape supply mea~s to be continuously supplied
with a pressure 6ensitive adhesive-backed tape 306 having a
; release paper adhered thereto. Thereafter~ the laminated
strip is advanced to tape application meanE where the strip
,~- passes in contact with press rollers 35 which press the tape
.. `~ 20 306 against the strip 3600 Finally, the strip 360 is continuously
,~ taken up by a take-up reel 353 to be wound thereabout. The
pressure and rotational speed of the haul-off rolls 333 and 334 :.
~ , .
of the above-mentioned pulling means can be adjusted in accordance
with the pressure at the outlet 3310 When the upper layer 363 ~:.
~,' . . .
~,, 25 of the flexible non-skid strip 360 comprises two lam m as of
.", ~`:
:,
~ '`
~ 36 -
..,. ~
.
. -
.. ,, . ~ .
.. ~
, .:
..,
-
. ,:
..:ij
-,. .
,.;, ~ ,:
,,...................................... , . ~ ,...... .
~ : .,,.. ,;
:`::: `
:
` ~S~LS3
.
different materials, two eætruders are employed with each
extruder extruding one type of material and the t~o different
materials are e~truded onto the sheet 326 into two laminas.
Fig. 32 shows a further modified process and an
apparatus for continuously and intermittently producing a i~
le~gth of flexible non~skid strip 390~ An extruder 320 is
;, .
` positioned in a substantially center point of the passage of ~
,: ,, each strip 390 and pairs o~ upper and lower feed and guide
,~ rolls 400 - 401~ 402 - 403, L~04 - 405, L~06 - L~07, 408 - 409,
. , .
410 - 411, 412 - 413, 414 - 415, 416 - 417, 418 - 419, 420 -
4Zl are positioned along the passage of the strip on the
upstream of the extruder 320 and a pair of haul-off rolls
440 and 441 are disposed along the strip passage on the down-
., " ~ ; .
~ stream of the extruder. These rolls are continuously driven
:; ~
~;~ 15 at a constant speed to advance the sheet 392 in increment.
The feed rolls 400 and 401 feed auccessive sheets at a spaced
~ relationship to the rolls 404 and 405 which in turn feed the
,, .
sheet to and through the nip between the ~orming rolls 430 -
and 431, A~ter having passed throu~h the ~orming rolls 430
,~ 20 and 431~ each sheet is passed through the pairs of rolls 406 -
; 407 and 402 - 403 in the order to heating means 311~ From the
` heating means 311, the sheet is passed to and -through an
: ,
, extruder 320 where the sheet 392 is applied thereon fused ~
:. ..
synthetic resin to form the upper non-~kid layer 393 on the
sheet to thereby form a laminated flexible non-skid strip 390.
.. .
.:., :. .
. ....................................................................... .
- 37 - ;~
.. . .
.
. ~.,.
, ,~ ." ~ . , .
,,.. ,~ ~.- .
. ~:
;:,- . .
.: . .
,, ?,f~
`` 3LOS~L~53
.
~i. The hot strip 390 is passed through haul-off rolls 440 - 441
: and guid rolls 410 - 411 in succession to a cooling tank 332.
From the cooling tank 332, the strip 390 is passed to and
~ through shearing means where actuated cutters 450 and 451
-~ 5 shear a sectio~ of a predetermined length from the remaining
laminated strip material to obtain a desired flexible non-
;. skid strip 390~ -
. . .
While ~arious embodiments of the inventlon have been ~ :
.`~ shown and described in detail, it will be understood that
there are for the purpose of illustration purpose only and is
not to be t~en as a definition of the scope of the invention,
.... .
.I~ reference being had for this purpose to the appended claims.
., .
" :
., ~ .
~, - .
- ,
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.,,. :,.
.. ,.. : .
~,
,, -., .
',.',` ':~
,
,,...................................................................... ~.
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~: .
- 38 _
. ,.
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~ii
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