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US 4,681,803 AGranted
Pigmented, heat-sealable coating composition for application to oriented polyolefin films
AssigneeMobil Oil Corporation
InventorLeland L. Liu
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AssigneeMobil Oil Corporation
InventorLeland L. Liu
Estimating the term…
A pigmented, heat-sealable coating composition for application to a primer-coated, oriented mono-layer or multilayer polyolefin film is provided which comprises a blend of (a) a binding and oxygen barrier effective amount of a heat-sealable polyvinylidene chloride homopolymer and/or polyvinylidene chloride copolymer containing at least about 50 weight percent copolymerized vinylidene chloride, (b) an amount of wax sufficient to result in a significant reduction in the coefficient of friction of a film to which the coating composition is applied and (c) an amount of pigment sufficient to result in a significant reduction in the light transmission property of a film to which the coating composition is applied. Oriented polyolefin films coated with the foregoing compositions possess excellent seal strength and hot tack properties, good blocking resistance, low coefficient of friction, low oxygen transmission rate and low light transmission.
A pigmented heat-sealable coating composition for application to a primer-coated, oriented mono-layer or multi-layer polyolefin film which comprises a blend of (a) a binding and oxygen barrier heat-sealable polyvinylidene chloride homopolymer and/or polyvinylidene chloride copolymer, at a level of from about 50 to about 90 weight percent of the coating composition, containing at least about 50 weight percent copolymerized vinylidene chloride, (b) wax at a level of from about 1.5 to about 10 weight percent of the coating composition, to thereby result in a significant reduction in the coefficient of friction of a film to which the coating composition is applied and (c) pigment at a level of from about 15 to about 25 weight percent of the coating composition.
Dependencies are inferred from the claim text.