Note: Descriptions are shown in the official language in which they were submitted.
2133777
- 1 - SL426
ARTICLES FORMED OF MULTILAYERED FILM
HAVING ANIIFOG PRO~Kll~S
Field of the Invention
s
This invention relates to multilayered, polyolefin films having an outer
layer of nylon and par~cularly to multilayered pol~ ylene films having an outer
layer of nylon. The films are of use in gre~nhouee co~.ings and mo~ified
atmcs~ e p~ ~ing having improved anti-fog pr~pellies.
ound of the ~nvention
A greenhol)~e by its very nature is l_~ui~d to be closed during cold
periods to contain the heat to create its growing envir~ nt At high hnmidiq
inside the greenhoue~, water con~lene~s on the inside of the gre~nhoue~ roof or cover
when the tell~latule of the roof or cover is reduced to the dew point or lower.
One ch~teristi~ of a thermoplastic greenhou~, film in a humid
gre~nhou~e envhonl,l~. l is that the water con~ ~- forms on the surface of the film
as fine dr~pl~ls. This con~lition is known as "fogging" and creates two basis
pl~b'~-m~ for the grower. First, the t~nemiesjon of sunlight~ an e~n~ ;quil~n,enfor plant growth, is reduc~d Se~nd, the fine droplets c~lee~e to form larger
dlo~'- e- which fall onto and may d~llage the crop below. The ~l~...age to the crop
may be to the extent that the market v lue bae-ed on crop quality is reduoed, and in
the case of a ~iqlity crop such as flowers, the d~ gci can render the crop
~ tq~lc
One way to o~e~llæ the above plobl~ of ÇOggil~g is to spray the
surface of the film ~-l o~d in the ~ ~-o~,~ envin~nnl~nt with a a~ t-n~ ~ which
when dry forms a coa~ng which illCl~S the surface tension of the film surface soas to reduce the interfq.~iq~l tension b~o~n the surface and water coll~P-ne-qtP,. The
result is that the water vapour c~nd~.-n-c~le wets the film with a clear sheet of wa~er.
The water then runs C~J~II;nIJ~11Y down the curvature of the film, instead of the water
droplets "raining" down upon the crop below. The enhqn~d tr.qn~mi~ion of light
increases the crop grow~ while pre~ ting crop ~ .aee.
_ ~ 1 3~ SL426
However, one problem çncounte ~d with the aforemP-ntiQnPd spraying
of the greenhou~e film is that the sprayed s~bst~nce may itself be harmful to the crop.
~lthough r~l-~ble steps are gPnP~lly taken to protect the crop during the spraying
opPr~ti~n, even with the most careful of applir~ti n techniques some crop damage is
S ine~ildbly eYreri~pn~
In ^ lditinn~ be~ ~, the coating ~b~.t~nc~ is ~ d as a so1ution and
the mi~ing process is PPne~lly critical and l~Uil~S the use of ~ictil1Pd water and/or
pH balance control, care by glO..~ must be taken. Further, for sucr~.~rul
applir~ti~n the film must be dry, and sunlight to dry ~e coating is ~ ss,~ ~. The
grower must not only take great care but must also await the proper weather and time
of day to apply the soll ti- n
It can thus be seen that an anti-fog system that does not require the
labour int~ns;ve S~n~illg of "in-house" film offers an advantage to g~. ~
Another method used to ovc~ ,e the anti-fogging problem involves
the il co.~,dtion of surf~Pntc into the plastics matri~ by the " r"l~r~ ~ of thegreenhou~ film wh~ n the ;,ulr~;~.l "blooms" to the inner surface of the
greenho~lse covering, i.e., there is a slow release of the s ~. r~ nt to the film surface
over time. In use, the su- r;.. ~.-t is abs~llæd at the film surface into the water
condPneqt~P and effects a l~lu~:~;nl- in water surface tPnston. This causes the water
to sheet and prevent the forlnqti~n of droplets. Unfollu-ldtel~, the effiri~Pnf,y of the
anti-fog plo~~ s of the film drops off over time.
Thus, there is a need for a film having an ~- h~ Pd err~live
greenhouse, antifog p~pc~l~ l;r~ over that given by co-l,lllc.~;ally available
greenhouee films.
For related reasons there is also a need for an improved film when
used as known in the art as "lU~lifiPd ~I~..os~.h~ P- ~;~&i~Pn. Such p~^~ging ismade of a Ih-....o~l~el;r mqtPriql in the form of s~hP-te, bags, sacks and the lilce for
cqn~ining food pr~lu~ such as meat, ~egetab1es and fresh fruits.
W}lile rno~ifiPd ~ r~jr~ inrllldes Val~;UUlll P~d~
such as for sliced meat pollions, a major outlet at the retail level is for fresh
veg~t~ble salad mix bags and fresh veget~hle portion packs. The bags or packs
&Pnerqlly have ap~llul~s to allow for air and carbon dioxide pe~ qn~ ~ or
c...i~, on, by having ~ P~l hole siæs or po~s;l)u
3 ~133777 SL426
One of the drawbacks of clear film p~l ~ing for the above use is that
the film of the bag 'fogs-up' in a cool storage area such as in a cooled retail display
shelf or the like in a retail outlet such as a ~ 1 This Çogging hinders the
desired good visibility of the food c~l-tr .l~i As in the case of some greçnhou~P, film
formulAtion~ mPntinnP~ hereinabove, surf~tAntc have been incol~-ated into the
l,e."lùplastic matrix to reduce the fogging. ~lthough anti-fogging long life
l~uile.llell~ of food pA~a~ g iS not nc~c .~ as in the case of greenho~e film,
release of sl~rf~t~nt to the surface or skin of the food is not d~pc~ le- Accor~ingly,
there is a need for an improved anti-fog film and, particularly, for such a film that
does not release chemi~A~ls to C~UI-A~;n~e foods.
Sun"ll~ of the Invention
It is an object of the present invention to provide a greenhouse having
a roof covering of a film having anti-fog p~,Le~ of ~ ded effectiveness.
It is a further object of the invention to provide mo lifipd ~I...osphe~e
pac~ing for fresh food p~luce formed of a i,--- r~ -free anti-fog film.
These and other objects of the present invention will be seen from a
reading of this spe~ifi~tinn as a whole.
Accordingly, the invention provides in one aspect an illl~JlU~
greenholl~, ACc~ ~bly c~ ;c;l~g in co--~h;.-A~ n greenhouse cover support means and
a multilayered Ih~ opl~ct;e film suppoll~d by said cover support means, said film
having a first layer i-~nc...-o~t of the ACS~mbly and at least a second layer, the
illlp~e.llent compricing said first layer is a nylon and said second layer co~ .;~s
a polyolefin.
By the term "nylon" as used in this spe~ifil~tinr~ is meant melt-
~luc~ lP tl,l ....opl~cl;c polyamides whose chain ;~u~lw~, f~lures l~ g amide
groups, such as, for ~ ~le, ~IlOl~ûuS nylon, nylon-6,6 (poly~ ylene
~i~mi~e)~ nylons-6,9, -6,10 and -6,12, nylon 6 (pol~cdpr~"lide), nylon 11, nylon12, polymers, copolymers and blends thereof.
It is known that nylons absorb IllOiS~Ul~ from their i".."PAi~
env~mlle~lt to ~e. tually reach a level that is in equilibrium with the relative
4 ~ 1 3 3 7 7 7 SL426
hl.mi-lity of the ~nl~n~l~hPre. It is known also that moisture has a plq~tici7ing effect
on nylons that inc~ses flexibility and impact rÇsict-qnce
It will be app~ nt that in one aspect the invention resides in the
discovery that a nylon layer providing the inn~ ,o~l surface of the roof covering of
a greenhouse provides Qqti~fq~tory anti-fog ch-q-~ctç~i~ti~-s over an un~ ected
bçnPfi~ iql period of time. Thus, the nature of the second and, optionally, other layers
of the multilayer film of use in the prq-~tice of the invention may be suitably sPl~ct~d
by the skilled artisa-n based on the usual desired pf~p~,Les such as weight, e. se of
mqmlfq.~ture, durability, rçci~t-qnc~ to s~nlight and the like. It will be, thus, clear that
the choice of olefinic mqtPriql of such ~.bo~i-~ate layers is not crucial to this
invention and resides within the skill in the art.
~,f~bly, the s. bo~ e layer is formed of at least one polyolefin.
By the term ~polyolefin" as used in this ~ifirqtion and claims is
meant the polyethylene, polyp~opJlene and pol~u~ pne family of olefine polymers
and copolymers. As examples, high density, low density and linear low density
polyethylenes and 1,2 - poly-l,u~ PnPs may be mPnti-nP~ The term ~poly~ ylene"
includes ethylene homopolymers, and copolymers of, such as vinyl ~c~PtP" acrylicacid, methyl Illeta.~ylale, butene, n-h~P~PnP~ 4-methyl-1-p~ ~t~ne and octene polymers
with ethylene and blends thereof.
The multilayered film of use in the pl~^tir~ of the invention may
compri~e (a) a plurality of distinct layers c~ r~ ed as a plurality of distinct plies,
(b) a l~ e cQmrri~in~ at least two distinct films or plies adhered to each other,
dil~tly, or by means of an adhesive, (c) a co ~ luded film produced by the self-q.~hPc;on of two or more films to each otha under hot process c n~iti~n~ or (d) a co-
oriented film, l~ te or ply made by the cold drawing of a plurality of
p~ films, Q;mUl~ ously in such dose contact 1~t th- r that under the
d,~wing step at the dl~-ng te~ u-~ the films b~---e i~.t;..~l. ly ~c~ ~d and
unified into a single reS~Jlt~nt film or ply while each undivided film is being uni-
axially o. ;Pn~*~
The co~ uded film of use in the invention may comprise two or more
layers provided that a nylon layer comrri~es one outer laya. In the case of a typical
three layer coextrusion film the layers are nylon, a tie layer, and a polyolefinic plastic
m~tPni~l The tie layer provides the bond strength ~l~n the nylon and the
2133777 SL426
polyolefin layers. By use of additives in the polyolefin layer, it is also possible in the
n~tive to bond the polyolefin to nylon will,oul the use of a special tie layer.
C~ALlusion of films may be acco...l lichPd by the blown tubular film method or the
sheet method, both of which are collllllonly used in in.lu~
S The tie layer may comprise those polymers well-known to industry for
bonding olefinic plastic mqtPri~l~ and nylon, for c.a ~'~, Prim~c~orn' from Dow
Chemir~l~, Plexar~ from QIJ~n~ll.ll ChP-mi~ql~, Surlyn~ from DuPont and Attane~
from Dow ChPmi~l
The layers of nylon, tie and poly~'^rin may be, plef~l~bly, further
stabilized for multiyear service life in a greenhouse e.. ~dron.. ~.-t Stabili7~tion
additives, incl~lde, for ~.a ,le, ~ntirsi-l~nt~, UV stabilizers, UV abs~ and
ch~ ;ng agents in the qu~ntitips ~uilèd for their spe~ific appli~ ~tion.
In ~d~ u~ the coextruded film may contain additives to give light
diffusion, ~lt~r~ti~n of sunlight ~ u~ infra-red energy conservation, and barrier
prop~,.hes.
~f~,~ly, the film co- -l.. ;~,s a nylon having a ,...~ g point (Tg) of
b~t~. 130C, p~fe,~able 200-230C.
The nylon layer after equilibration with water in a humid ~tmoi"Jhc-e
to be~l,le so called "wettedn, pre~bly, has a surface tension of greater than 65dynes/cm and, morepl~f~,~bly, b~t~.~cn 70-75 dynes/cm.
A typical multilayered film of use in the invention is a c~hu~ion of:
Nylon layer EMS grade XE 3303 1 mil
Tie layer P~ . 1 mil
Olefinic layer LLDPE 2.5 mil
The multilayered films as ~les~rihed aÇ~,r~id may be readily made by ~o,~id
pi~ces~s known in the art")~f~ably by blown film ~AIl~sion. Film widths range,
typically, from lm to 15m. 3- and 5-layerêd co~.~l.uded films of a nylon outer layer
with layers of LDPE, LLDPE or EVA copol~",~ blends are most plef~.lèd.
The multilayered film is imt~ll~ and laid to cover the covering
~ul)polls of a gretnhou~e structure as is convention~l in the art, but with the nylon
surface on the inside of the gre~nhol~. The hllmitlity within the gre~nhou~e
~ndçn~Ps on the nylon surface to form a clear sheet of co~den~tp~ Freshly in~t~lled
- ~ - 6 2133777 SL426
film takes less than 24 hours to equilibrate with the humid gre~-nhouse qtmo~ph~ . e and
b~o.~ wetted.
The antifog action of the nylon film is very long lasting as to be
~med almost pe~ ...qnel~l in its anlifogging effect, since there are no s-~ r; - l~..h or
sylaytd ~qting~ to be ble-q~ ~ away.
Pq~ing compri~ing film of use in the present invention mqnuf~ red
in the form of sheets, rolls, bags, sachets and the like may .lso be made by
con~nt;on-q-l plwesses known in the art. The ~ ing is, gene~ally, provided to
the food pr~ccssor for the pa~L;~ of the ve~et-q-hle, fruit or meat produce carried out
conventionqlly by hand or m~hine. The ~ ~ produce may be then, optionally,
cooled or ref ig~t~ prior to distribution to retailers.
Accordingly, in a further aspect the invention provides a p~r~
pe-ri~h-qhle foo~sh-ff compricing in co",bindlion a ~l.~ing article as h~ nbefole
defined cQ~ ;ning the foo~stuff.
Brief Dc3eli~tion of the Drawin~
In order that the invention may be better unde~tood p,erelled
emho~iment~ will now be de~rihe~ by way of e~qmr'~ only with reference to the
acco"~pa"yin& Pl~qmF1es and d awil gs wh~
Fig. 1 ~e~ scn~ a pc ~ e view of an unrolled, unfolded film position~ on a
gre~nho-lse accolding to the invention; and
Fig. 2 r~ sen~ a ~;ti.~e view of a p~^~ge cQn~-;ninP a foo~ rraceor~ g to
the invention.
Detailed D~,i~)tion of F~fe~l~d
~u~ nts of the Invention
~r~lc~ot~ antifog tests ~imlll~t1~ multiyear C4..~...e-~,;al usage have
shown that f~mbodiments of multilayered nylon films of use in the pr?^tiee of the
present invention ~IÇol~ned both s~ r~e~ ;ly and conl;~ ously long after a
co..~ ;dlly available antifog gre~nhouse film had bæo~..e "foggedn.
- 7 - ~1337 7 7 SL426
E~ ple 1
Accel~aled Test for Simulated T~n~evity
of Antif~ Pe.roi"lance
S Spff~ ns of l~ ~nt nylon films (EMS - ~mPrie~n Grilon Inc,
Sumter, S.C. U.S.A) (304 mm X 600 mm) were ~rrængP~d to form a plastic in~
roof of a tent-like humitlity box en~lo~ing a water bath ,..~inti..nP~l at 60C to provide
a humid ~...os.~he~ at a ~ ..~;~ e of about 38C. The outer layer of the film was
to the ~ k~.~ at an a,llb cnt t~ ..lY AIV~ of about 22C. The s~ -r~-
films were n.oui~t~ in an in-~.lin~d position such that condencal~ conl;.-~ lly ran down
the length of the inner surface of the .s~-;...~n films and washed their ~--- r~ S The
nc were obse~ed by visible in~tirn for an ~ to be made of the
longevity of the anti-rogging ch~ ties
RP~ULTS
Length of
Antifog
~.fol,l-ance
Sample Grade Co.l-po~ilion (l~lfonth~)
or~in~l CR6~RSP CoPA 6/6.9 5
Folie 2 blend 75 % F34/25 æ CR9 11 +
Folie 3 blend 85 % F34/15 % CP62BS 11 +
Folie4 blend 85% F34/15% X~222 11+
Folie S XE 3314 MedVis PA6, = Nu(~l~t~ F34 11+
Folie 6 XE 3398 XE 3222 + arnorph CoPA (G21) 11 +
Folie 7 FE 4122 PA6 + ~llolt)l~ous CoPA 11+
~d-liti~n~l XE 3303 CoPA 6.6/6.10 11+
93-46 blend 85% CF62BSE + 15% G21 1.5
commercial an~fog greenhouse film;
AT Plastics Dura FilmR 2 AF s.J~ ct~nl AF 1.5
The results show that cull~ ~ co"""c.c;al grades of filmable nylon
ul~ed well in showing ~";~r;~ antifog prop~llies for up to the lire~."e of the
test, i.e. 11 months, in conl~ to the control co","-.,.cial greenhouse film's result
of llt2 m~th~
`_ -8- 2133777 SL426
The effect of moisture on nylon is also benefi~ when the nylon is
used in articles of the invention, e.g. greenhou~e or p~ ~ing film by making thenylon layer less brittle! A dry and "wetted" five-layered sample COI..~. ;~nn for the
sample comrri~i~ FE 4122 is given below, as Y:
S Y. Layer 1. Blend LDPEILLDPE (100 ~m)
2. Tie (5 ~m)
3. FE4122 (20 ~m)
4. Tie (5 ~m)
5. PEA122 (20 ~m)
Physical }?~ Lies Units Dry as is Wetted
Ftnw-do.r tear, MD N 1.74 3.74
TD N 10.6 9.98
Tensile plop~.lies MD:
Yield strength MPa 20.0 15.9
Break ~ lh MPa 33.0 32.4
Fl~-ng~tir n % 326 362
Tensile pl~ ies TD:
Yield ~en~;lh MPa 20.8 16.6
Break ~ h MPa 24.7 17.7
p~ g~ti~.n % 307 263
Moi~ re loss, 48h % 1.2
Light Tr~n~mi~ n % 91.7 91.7
With l~fel~nce now to Fig. 1, wl~ a greenhouse ~ ..bly shown gen~.~lly as 10,
has a plurality of roof support n..~ x~ 5 12 and side support n.~-. be~ 5 14 to which is
held a covering film 16. Film 16 is ~lr~l~d from the five-layered films of the
following cori,l-uction:
9 ~133777 SL426
1. Order of Material LDPE 85X F3A 85X F3A
~ HV ~ RV
LLDPE 15X XE3222 15X XE3Z22
Thickness 100 ~ 5~ 20~ 5a 20
2. Order of Msterial LDPE
I HVXE 3398 HVXE 3348
LLDEP
Thickness 100 ~ 5~ 20~ 5~ 20
3. Order of Materia~ LDPE
I HVFE4122 HVFE 4122
LLDPE
Thickness 100 ~ 5~ 20~ 5~ 20
4. Order of ~ateris~ LDEP
~ HVXE 3314 HVXE 3314
LLDPE
Thickness 100 ~ 5~ 20~ 5~ 20
wl,e.~in HV is a tie layer of ethylene/vinyl acetate copolymer. These films are made
on a commercial five-layer co e~hu~;on line.
Fig. 2 shows generally as 20 a ~ ,.."opl~t;e L~gi~p article c~lAi~ing a ppri~h~hle
fOO.~ rr, such as a fruit or ve~Pt^t~lP- (not shown) formed of the five-layered film 22
~lc~-.il~d h~inbero.~ under sample Y. Bag 20 has a plurality of breath holes 24
and co~ c a plurality of apples 26.
The nylon thc~...op~ ie ela~h,l~ have the following plo~.li~c.
Grilon XE3303 (Nylon 6.6/6.10):
TEST
PROP~K11kS M~l~lOD UNITS VALUES
General
Melting Point DSC F/C 392/200
Specific Gravity ASTM D792 -- 1.09
Melt Flow Inde~ DIN 53735 ml/10 min. 60
(275C/10 kg) dry
24 hour H2O
Al ~ ASTM D570 % 1.16
~Im 1.. . tiw I r ~ a on a 50 pn film sample)
2 1;. ~ Ijty
73F(23C)150% RH DIN 53380 cm3/ '-d~b- 55
73F(23C)/100% RH 75
CO
73F(23C)/50% RH DIN 53380 cm3/m2 d bar 185
N2 ~ ' lity
73F(23C)/50% RH DIN 53380 cm3/ ~ d~b 12
Water Vapor
r~ , DIN 53122g/m2 d 14
900 Cycb Gelbo
Fle~ Tester EMS holes/m2 190
-- 10 -- 3 3 ~ 7 7 SI~T26
Puncture Work DIN 53373 Nm (cond.) 0.5
Ql ~ EMS % 30
Gloss (60) DIN 67530 120
S r~ , ti~ PrY-As
-Molded C ' - '
Tensile Strength ASTM D638 psi (MPa) 9,000(62) 3,600 (25)
pl _ - ~ Yield ASTM D638 % 5 25
p1- g ~ Breal~ ASTM D638 % 100 300
Fle~ural Strength ASTM D790 psi (MPa) 12,000 3,000(21)
Fle~cural Modulus ASTM D790 psi (MPa) 266,000 60,000(414)
TT ~. Shore D D Scale 78 68
Izod Impact Strength ASTM D256 R-lb/ina/m) 1.01(59)
Grilon XE3222 (NYlon 6/6.9):
TEST
PROP~KllkS METHOD ~lNlTS VALUES
G~
Mdting Point DSC F/C 396/202
Specific Gravity ASTM D792 -- 1.11
Melt Flow Inde~ DIN 53735 ml/10 min. 140
(275C/10 kg) dry
24 hour H2O
~ i ASTM D570 % 2.20
~lm l,~, L~.s ( e ~ on a SO ~n film sample)
2 F ' lity
73F(23C)/50% RH DIN 53380 '/ ~-d ~- 35
73F(23C)/100% RH 100
CO2 p~~ ~~' ' ty
73F(23C)/50% RH DIN 53380 cm3/~-d ~ 70
N2 ~ ;ty
73F(23C)/50% RH DIN 53380 cm3/m2 d bar 14
Water Vapor
r~ DIN 53122 g/m2 d 20
900 Cycb Gelbo
Fle~c Tester EMS holes/m2 400
Puncture Work DIN 53373 Nm (cond.) 2.5
Q~ EMS X 25
Gloss (60) DIN 67530 100
r~ s DrY-As
-Molded C/ ~
Tensile Strength ASTM D638 psi (MPa) 9,400(65) 4,100 (28)
p~ Yield ASTM D638 % 10 25
P1- 9 e~ Br~ A~r~ D638 % 270 300
Fle~cural Strength ASTM D790 psi (MPa) 13,100 3,000(21)
(90)
Fle~ural Modulus ASTM D790 psi (MPa) 304,000 65,000(449)
(2098)
T~- . - Shore D D-Scale 76 69
Izod Impllct Strength ASTM D256 R-lb/ina/m) .08(43) N.B.
133777 SL426
Grilon G21 (Amphous nYlon co~l~
TEST
PRO~Kll~ METHOD UNITS VALUES
Gend
S Glass Transition Temp DSC F/C 257/125
Specific Gravity ASTM D792 -- 1.18
r' ~ ASTM D570 %
24 hour ~ 1.29
Melt Plow Inde~c DIN 53735 ml/10 min.(dr,y)
(275C/10 kg) 90
Inde~c DIN 53491 -- 1.58
Light T - ASTM D1003 % 91
Heat ne"- ~i T; e
66 psi (455 kpa) ASTM D648 F/C 244/118
264 psi (1820 kPa) ASTM D648 F/C 223/106
Me~anical
Tensi1e Strength ASTM D638 psi (MPa) 10,400(72)
pl ~ - ~ Break ASTM D638 % 15
Fle~cural Strength ASTM D790 psi (MPa) 17,200(119)
Fle~cural Modulus ASTM D790 psi (MPa) 416,000 (2870)
Izod Impact Strength ASTM D256 ft-lb/in
Notched . (J/m) 1.0 (53)
l' 3 Shore D-Scale 80
Flm l ~ measured on a so micron film sample)
O p~ y
73F(23C)/50% RH DIN 53380 cm3/ '-d 1 30
73F(23C)/100% RH 8
CO2 ~
73F(23C)/50% RH DIN 53380 cm3/m2 d bar 75
N2 ~ ' I;~y
73F(23C)/50% RH DIN 53380 cm3/m2 d bar 10
Water Vapor
Pt ' ' ~i DIN53122 glm2 d 7
Gloss (60) DIN 67530 140
Grilon F34 Natural 6368 (NYlon 6l:
TEST
PRCir~Kll~S MF~OD UNITS VALUES
General
Melting Point DSC F/C 430/220
Specific Graviq ASTM D792 -- 1.14
45 '= ~ A1 , - ASTM D570 %
24 hr. ~ ~ 230
lo ~ir 73 F(23 C)/SO æ RH 2-3
Ia Water 73F/23C ~ 10
Fllnl.. ti~
2 P~ V DIN 53380 cm3/mZ-d-bar
23C/0% RH 25
23C/85 % RH 100
CO2 p~ y
23C/0% RH DIN 53380 cm3/ ~-d~ 65
N p~ ;q
23C/0% RH DIN 53380 cm3/ 7.d~-- 10
`~ - 12- ~133777 SL426
Water Vapor
p~ -' 'l;t,y DIN 53122 glm2 .d 20
Gloss (60) DIN 67530 100
Dry-As
r~- t ~ -Molded C~
Tensile Strength ASTM D638 p6i (MPa) 10,600(73) 5,500(38)
Fl " d Yield 5 20
Fl - at Break ASTM D638 % 265 315
Fle~cural Strength ASTM D790 psi (MPa) 16,000(110)4,500(31)
Fle~cural Modulus ASTM D790 10~si (MPa) 35(2400) 8(56Q)
Izod Impact Strength ASTM D256 ft-lb/in
Notched alm) 1.9 (1.01) N.B.
Charpy Impact Strength ASTM D256 ft-lb/in2
Notched 73P/34C ~lm2) 11(5) 42(20)
-40F/C 4(2) 11(5)
TT Shore D-Scale 80 78
Grilon CP62BSE (Nylon 6/6.9):
TEST
PROP~K l lkS METHOD UNlTS VALUES
G~
Melting Point DSC P/C 273/134
Specific Gravity ASTM D792 -- 1.09
Melt Plow Inde~c DIN 53735 ml/10 min. 40
(190C/10 kg) dry
24 hour H2O
~l p" ASTM D570 % 2.53
Flm l .. ~ ~;w ~ ~ ~ on a 50 pm f~n s~mple)
2 ~ ' 1ity DIN 53380 cm3/m2-d-bar
73F(23C.)/50% RH 45
73P(23C)/100% RH 200
35 CO2 p~ -lity DIN 53380 cm3/ 7-d l-- - 125
73F(23C)/50% RH
N ,~ Y DIN 53380 cm3/~ ~7-d t 10
73P(23C)/50% RH
Water Vapor DIN 53122 g/m2 d 20
40 r~ ity
900 Cycle Gelbo EMS holes/m2 600
Ple~ Tester
Puncture Work DIN 53373 Nm (cond.) 2
EMS 9~ 40
45 Gloss (60) DIN 67530 120
r~ ' .. ~ I;w Dn-As
-Molded C
Tensile Strengtll ASTM D638 psi (MPa) 5,900(41) 3,700(26)
Pl _ ~ Yield ASTM D638 % 10 20
P~- _ ' OE Break ASTM D638 % >250 330
Fle~ural Strength ASTM D790 psi (MPa) 2,500(17) 2,000(14)
Fle~ural Modulus ASTM D790 psi (MPa) 120,000 75,000(520)
(828)
TT- ' Shore D-Scale 72 59
Izod Impact Strength ASTM D526 ft-lb/in
a/m) N.B. N.B.
`_ - 13- 2133777 SL426
Grilon CR9 (Nylon 6/12):
PROPERTY METHOD UNIT VALUE
G~
Melt Point DSC C 200
- F 392
Specific Gmvity ASTM D792 -- 1.10
Melt Flow Inde~ DIN 53735 ml/10 min. 200
(275C/10 kg) dq
24 hour H20 .~ ASTM D570 % 2.5
Fllm l .. . ti~ ( ~ d on a 50 pn film sample)
2 p~ ' lity DIN 53380 cm3/m2-d-bar
23C/50% RH 55
23C/100% RH 100
C2 ~ ' 1ity DIN 53380 cm3/m2 d-bar 170
23C/50% RH
N F~ ~ ' lity DIN 53380 cm3/m2 d bar 13
23C/50% RH
Water Vapor DIN 53122 g/m2 d 15
~ ~ ~
900 Cycle Gelbo EMS holes/m2 800
Fle~ Tester
Puncture Wo* DIN 53373 Nm cond. 3
~ EMS 30
Gloss (60) DIN 67530 140
r~
Tensile Strength ~at
Yield ASTM D638 psi 5,800
Tensile Strength e~
Break ASTM D638 psi 7,100
Fl - ~ Yield ASTM D638 % 20
Fl ~ '- ~ Break ASTM D638 % >300
Fle~ural Strength ASTM D790 psi 11,000
Fle~ural Modulus ASTM D790 psi 240,000
T' ' - Shore D -- 80
Izod Impact Strength ASTM D526 R Ib./in. 1.9
While certain p~ ~ embo~ of the invention have been i111)st~t~
and described for pUl~)OSeS of the present ~ osl~re~ nu~ us ch~ in the
arr~n~e-..en~ and consh--clion of elf--.~-n~ thereof may be made by those slcilled in the
art which ch~r~e.~s are e~ ~d within the scope and spirit of the present invention
as defined by the al pc d~ claims.
