Abstract: The permeation resistance to gases and vapors of polymeric articles including thin walled articles such as films and bottles can be increased by annealing the film. A preferred embodiment is one where the preferred polymer is polycaprolactam or high density polyethylene. There is from 1 to 50 percent of a platelet filler having an average equivalent diameter of from 1 to 8 micrometers, a maximum equivalent diameter of about 25 micrometers, and an average thickness of less than 0.5 micrometers.

Abstract: Thin polymer films containing small sized platelet type filler. The polymer has a melt index of from 0.01 to 10 grams per 10 minutes at 190.degree. C. to 250.degree. C. as measured on ASTM Test No. D-1238 at a load of 1000 to 2160 grams. The preferred polymer is polycaprolactam or high density polyethylene. There is from 10 to 50 percent of a platelet filler having an average equivalent diameter of from 1 to 8 micrometers, a maximum equivalent diameter of about 25 micrometers, and an average thickness of less than 0.5 micrometers. The preferred filler is talc. The film is from 10 to 100 micrometers thick and can be a single ply or a laminate.

Abstract: Disclosed is a polyamide film of low crystallinity suitable for use in the manufacture of sheet molding compound (SMC). The sheet is produced from a blend comprising a polyamide selected from the group consisting of polyepsiloncaprolactam, polyhexamethylene adipamide or mixtures thereof, and about 10 to 30 wt. %, based on the total weight of said blend, of a polyolefin compound, or copolymer thereof, such as ethylene-vinyl acetate copolymer. The film has a tear strength of at least about 400 grams in the longitudinal direction as measured by ASTM D-1004-66.

Abstract: Thin polymer films containing small sized platelet type filler. The polymer has a melt index of from 0.01 to 10 grams per 10 minutes at 190.degree. C. to 250.degree. C. as measured on ASTM Test No. D-1238 at a load of 1000 to 2160 grams. The preferred polymer is polycaprolactam or high density polyethylene. There is from 10 to 50 percent of a platelet filler having an average equivalent diameter of from 1 to 8 micrometers, a maximum equivalent diameter of about 25 micrometers, and an average thickness of less than 0.5 micrometers. The preferred filler is talc. The film is from 10 to 100 micrometers thick and can be a single ply or a laminate.

Abstract: A composition of matter comprising a polyamide, preferably polyepsiloncaprolactam, and from 1 to 65 percent of an ethylene vinyl alcohol copolymer. The composition is useful for making moldings, films, and fibers.

Abstract: Disclosed is a polyamide film of low crystallinity suitable for use in the manufacture of sheet molding compound (SMC). The sheet is produced from a blend comprising a polyamide selected from the group consisting of polyepsiloncaprolactam, polyhexamethylene adipamide or mixtures thereof, and about 10 to 30 wt. %, based on the total weight of said blend, of a polyolefin compound, or copolymer thereof, such as ethylene-vinyl acetate copolymer. The film has a tear strength of at least about 400 grams in the longitudinal direction as measured by ASTM D-1004-66.

Abstract: A composition of matter comprising a polyamide, preferably polyepsiloncaprolactam, and from 1 to 65 percent of an ethylene vinyl alcohol copolymer. The composition is useful for making moldings, films, and fibers.

Abstract: A sheet formed from a uniform blend of from about 80 to 97% by weight of polyethylene terephthalate having an intrinsic viscosity of above about 0.9 and a melt viscosity at 525.degree. F. of above about 10,000 poises and correspondingly from about 20 to 3% by weight of a polycarbonate resin having an intrinsic viscosity of about 0.4 to 0.6 and a melt viscosity at 500.degree. F. of less than 50,000 poises; said sheet having a haze value as determined by ASTM D-1003 of less than about 2% and being essentially amorphous and non-oriented. Also disclosed is a process for forming a sheet which comprises uniformly blending the composition, extruding the composition into a sheet at a temperature between about 490.degree. to 530.degree. F. and rapidly cooling the sheet by contact with at least one cooling surface maintained at a surface temperature in the range of about 50.degree. to 160.degree. F. for a period of time not exceeding about 15 seconds.

Abstract: A sheet formed from a uniform blend of from about 80 to 97% by weight of polyethylene terephthalate having an intrinsic viscosity of above about 0.9 and a melt viscosity at 525.degree. F. of above about 10,000 poises and correspondingly from about 20 to 3% by weight of a polycarbonate resin having an intrinsic viscosity of about 0.4 to 0.6 and a melt viscosity at 500.degree. F. of less than 50,000 poises; said sheet having a haze value as determined by ASTM D-1003 of less than about 2% and being essentially amorphous and non-oriented. Also disclosed is a process for forming a sheet which comprises uniformly blending the composition, extruding the composition into a sheet at a temperature between about 490.degree. to 530.degree. F. and rapidly cooling the sheet by contact with at least one cooling surface maintained at a surface temperature in the range of about 50.degree. to 160.degree. F. for a period of time not exceeding about 15 seconds.

Abstract: This invention provides a film or sheet capable of being thermoformed into a shaped article and being formed from a blend of about 60 to 85 parts by weight of a polyethylene terephthalate polymer having an intrinsic viscosity of at least about 0.90 and correspondingly about 40 to 15 parts by weight of a polycarbonate polymer, the polyethylene terephthalate portion of the film or sheet having a degree of crystallinity in the range of about 20 to 40%. The film is essentially non-oriented. The present invention also provides shaped articles thermoformed from such film or sheet, such as cook-in-trays. Moreover, this invention provides a process of forming such film or sheet which comprises the steps of blending about 60 to 85 parts by weight of a polyethylene terephthalate polymer having an intrinsic viscosity of at least about 0.90 with correspondingly about 40 to 15 parts by weight of a polycarbonate resin, extruding the resultant blend at a temperature of above about 500.degree.

Abstract: This invention provides a film or sheet capable of being thermoformed into a shaped article and being formed from a blend of about 60 to 85 parts by weight of a polyethylene terephthalate polymer having an intrinsic viscosity of at least about 0.90 and correspondingly about 40 to 15 parts by weight of a polycarbonate polymer, the polyethylene terephthalate portion of the film or sheet having a degree of crystallinity in the range of about 20 to 40%. The film is essentially non-oriented. The present invention also provides shaped articles thermoformed from such film or sheet, such as cook-in-trays. Moreover, this invention provides a process of forming such film or sheet which comprises the steps of blending about 60 to 85 parts by weight of a polyethylene terephthalate polymer having an intrinsic viscosity of at least about 0.90 with correspondingly about 40 to 15 parts by weight of a polycarbonate resin, extruding the resultant blend at a temperature of above about 500.degree.