Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
SPECIFICATION
A MASKING MEMBER
FIELD OF THE INVENTION
.
The present invention relates to a masking member
used to protect a part of the surface of an article
from a surface treatment such as coating, plating and
the like when said surface treatment is effected on
said surface of said article.
For instance, polyvinyl-chloride sol, tar-urethane,
and the like have been coated on the underside of the
floor of cars, however, said underside of the floor of
cars has many holes such as bolt holes, cable holes,
drainage holes, shaft holes and the like~ and has
places where parts of brackets and the like are
attached, and the masking member is attached to said
holes and said parts before coating to protect t,hem so
that the paint does not go into said holes and coating
: film is not formed on said parts to which parts are
attached which would decrease the fastening strength of
said parts.
DESCRIPTION OF THE PRIOR ART
..
Hitherto, a masking member consisting of a panel
(2) of a polystyrene foam wherein an adhesive layer (3)
~: is formed on one side of said panel (2) has been
provided as shown in Fig. 10 (Jikkai Sho 62-5852).
;`
Said masking member (1) is attached to a part (5)
:~ of an article (4) to be protected by said adhesive
:
-1-
layer (3) as shown in Fig. 11 and after coating, said
masking member (1) is removed from said part (5).
Nevertheless, since the surface of said masking
member (1) is also covered with a coating film (6) on
coating said part (5), when said masking member (1) is
removed from said part (5) of said article (4) after
said coating, it may be difficult to remove said
masking member (1) smoothly since said coating film (6)
obstructs the removing of said masking member (1). For
instance, as said masking member (1) consists of such as
a plastic foam, when said masking member (1) is heated,
said masking member (1) contracts and automatically
drops from said part (5) of said article (4), but in a
case where said masking member (1) is covered with said
coating film (6), said contracting masking member (1)A
may be obstructed from dropping automatically as shown
in Fig. 12. Further, although said masking member (1)
is easily stabbed by a hook (7) and the like, when said
masking member (1) is stabbed by said hook (7) to
remove from said part (5), said coating film (6) around
said masking member (1) is broken so as to be
delaminated from the surface of said article (4).
: `~
DISCLOSURE OF THE INVENTION
The present invention provides a masking member
consisting of a panel (12) wherein an adhesive layer
(13) is formed on one side of said panel (12) and a
lacking part (12)A is formed around the circumference of
said side as a means to solve said prior problem.
Said masking member (11) of the present invention
is attached to a part of an article to be protected by
said adhesive layer (13~ and a film of a surface
treatment formed on the surface of said article is cut
by said lacking part (12)A formed around the
circumference of said side of said masking member (11)
in which said adhesive layer (13) is formed.
Accordingly, as said film around said masking member is
cut, said masking member is easily removed from said
part after a surface treatment.
BRIEF DESCRIPTION OF THE DRAWINGS
Figs. 1 to 5 each show an embodiment of the present
invention. Fig. 1 is a perspective view, Fig. 2 is a
side view, Fig. 3 is a side sectional view when said
masking member is used, Fig. Ll iS a side sectional view
when said masking member is contracted by heating and is
removed, Fig. 5 is a side sectional view when said
masking member is removed by a hook, Fig. 5 is a partial
perspective view of assembled masking members, Fig. 7
is a perspective view of another embodiment of the
present invention, Figs. 8 and 9 each show a further
embodiment; Fig. 8 is a perspective view, Fig. 9 is a
side sectional view o~ a masking member contracted by
heatiing, and Figs. 10 to 13 each show a prior
embodiment; Fig. 10 is a perspective view, Fig. 11 is a
side sectional view when said masking member is used,
Fig. 12 is a side sectional view of said masking member
contracted by heating, Fi~. 13 is a side sectional view
when said masking member is removed by a hook.
In the DRAWINGS~ ~
(11) ....... Masking member
- 3 -
: .
. ~ . . - ...
(12) ....... Panel
(12)A ...... Lacking part
(13) ....... Adhesive layer
DESCRIPTION OF THE INVENTION
Describing the present invention by the embodiments
shown in Figs. 1 to 5, a masking member (11) consists
of a panel (12) and an adhesive layer (13) formed Oil
one side of said panel (12) wherein a lacking part (12)A
is formed around the circumference of said side. As
shown in Fig. 2, it may be preferable that the width W
of said lacking part (12)A is more than 1 mm and the
height h is in the range between 0.2 and 10 mm, more
preferably 0.5 and 5 mm.
A masking member (11) of the present invention is
made of a plastic such as polystyrene, polyethylene,
polypropylene, polyvinyl-chloride, polyurethane,
melamine resin, urea resin, phenol resin and the like,
a reinforced plastic wherein an inorganic filler such as
calcium carbonate, talc, bentonite and the like is
mixed in said plastic, a foamed plastic of said plastic,
a synthetic rubber such as styrene-butadiene rubber,
acrylonitrile-butadiene rubber and the like, a natural
rubber, a molded fiber material wherein wood fiber,
synthetic fiber, natural fiber, inorganic fiber etc. is
bound by a binder to mold wood, paper, reclaimed paper,
corrugated card-board, metal, and a complex or a
laminate of two or more of said materials.
As shown in Fig. 3, said masking member (11) is
attached to a part (15) of an article (14) to be
protected by said adhesive layer (13), and a surface
- ` :
treatment such as a coating by using a paint such as
polyvinyl-chloride sol and the like is effected on the
surface of said article (14). A film (16) of said
surface treatment is formed on the surface of said
article (~ and said film (16) is cut around the
circumference of said masking member (11) by said
lacking part (12)A of said masking member (11). In this
case, if the width ~1 of said lacking part (12)A of said
masking member (11) is less than 1 mm and the height h
of said lacking part (12)A is less than 0.2 mm, it may
be difficult to smoothly cut said film (16) by said
lacking part (12)A, and if the height h of said lacking
part (12)A is higher than 10 mm, said film (16) may be
formed in the inside of said lacking part (12)A and it
may be difficult to smoothly cut around the
circumference of said masking member (11).
After said surface treatment, said masking member
(11) is removed from said part (15) of said article
(14) and in a case where said masking member (11)
consists of a material which c~n be contracted by
heating such as a plastic foam, said masking member
(11) is contracted by heating at a higher temperature
than the contracting temperature of said masking member
as shown in Fig. 1l. Said contracted masking member
(11)A may drop automatically from said part (15)
without any obstruction of said film (16). Further,
said masking member (11) may be removed ~rom said part
(15) by a hook (17) as shown in Fig. 5. In this case,
if the height h of said lacking part (12)A of said
masking member (11) is higher than 5 mm, said hook (17)
may be easily engaged at said lacking part (12)A and the
removing work of the masking member is easily
performed. And since said film (16~ is already cut
- 5 -
,
2 ~ 8 9
around the circumference of said masking member (11),
when said masking member (11) is removed, said film
(16) may not be broken and delaminated from said part
(15)-
As shown in Fig. 6, a plural number of said maskingmembers (11) may be assembled intermediating a plural
number of snapping grooves (18) to form an assembled
masking member (10). ~hen said assembled masking member
(10) is used, one masking member (11) is snapped out
along said snapping grooves (18). Further, a piece
consisting of a plural number of masking members ( 11 )
such as 1 x 2, 2 x 2, 1 x 3, 2 x 3, 3 x 3 and
the like may be snapped out according to the shape and
the size of said part (15) of said article (14) to be
~ protected.
:
Fig. 7 shows another embodiment of the present
invention. In this embodiment, a cut-away open space
(1~)B is formed in the center of one side of a masking
member (11) around which an adhesive layer (13) is
formed. Accordingly, in said masking member ( 11 ), the
area of said adhesive layer (13) is reduced by said
cut-away open space (12)B and as a result, the bonding
strength of said masking member (11) to said part (15)
~; may be reduced so as to remove said masking member (l1)
easily from said part (15).
~ .
Fig. 8 shows further embodiment of the present
invention. In this embodiment, a dent (12)C having a
crater shape is formed in the center of one side of a
masking member (11) wherein an adhesive layer (13) is
formed on the other side of said masking member (11).
~hen said masking member (11) is attached by hand, a
'
- 6 -
: .
.
finger is put in said dent (12)C. Further, since said
masking member (11) may be easily contracted and
deformed by said dent (12)C as shown in Fig. 9 when said
masking member (11) is heated to be softened, said
masking member ( 11 ) may be more easily removed from said
part (15) of said articlel(14).
,,~ ' ' .
; - .
