Nylon copolymer and nylon blends and films made therefrom
First Claim
1. A multiple layer film having two surfaces and comprising a first heat sealable layer on one surface thereof and a second nylon layer on the other surface thereof, and wherein the composition of said nylon layer is a blend of 40% to 75% by weight nylon 6 and 60% to 25% by weight of a nylon copolymer wherein the copolymer is 80% to 90% moieties of a first polymer of nylon 6 and 20% to 10% moieties of a second polymer of nylon;
- the overall composition of the blend comprising 2.5% to 10% moieties of said second polymer of nylon.
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Accused Products
Abstract
A novel composition of matter having surprising physical properties when fabricated into multiple layer films is disclosed. The composition is generally a blend of nylon 6 with a nylon copolymer comprised of nylon 6 and a second nylon polymer. The second nylon polymer is 2.5 to 10 mole percent of the overall composition. The remaining 97.5% to 90% of the composition is the nylon 6 and the nylon 6 component of the copolymer. The nylon composition may be comprised entirely of a nylon copolymer having 90% to 97.5% nylon 6 and 10% to 2.5% of a second nylon polymer. The multiple layer films fabricated with the nylon compositions show unexpected range of thermoforming and heat sealing capabilities and good heat resistance, similar to that of nylon 6.
62 Citations
41 Claims
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1. A multiple layer film having two surfaces and comprising a first heat sealable layer on one surface thereof and a second nylon layer on the other surface thereof, and wherein the composition of said nylon layer is a blend of 40% to 75% by weight nylon 6 and 60% to 25% by weight of a nylon copolymer wherein the copolymer is 80% to 90% moieties of a first polymer of nylon 6 and 20% to 10% moieties of a second polymer of nylon;
- the overall composition of the blend comprising 2.5% to 10% moieties of said second polymer of nylon.
- View Dependent Claims (2, 3, 4)
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5. A multiple layer heat sealable film having two surfaces, said film comprising:
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(a) a first heat sealable layer on one surface of the film; (b) a second nylon layer on the other surface of the film; (c) a third polymeric layer of ethylene vinyl alcohol copolymer between said first and second layers; and (d) a fourth adhesive layer between said first and third layers, said second layer comprising a blend of nylon polymer and nylon copolymer;
said blend being 40% to 75% by weight nylon 6 and 60% to 25% by weight of a nylon copolymer wherein said copolymer is 80% to 90% moieties of a first polymer of nylon 6 and 20% to 10% moieties of a second polymer of nylon,the overall composition of said blend comprising 2.5% to 10% moieties of said second polymer of nylon. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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- 32. A multiple layer film having two surfaces and comprising a first heat sealable layer on one surface thereof and a second nylon layer on the other surface thereof, and wherein the composition of said second nylon layer is 90 to 97.5 mole percent nylon 6 and 10 to 2.5 mole percent of a second polymer of nylon.
Specification