초록 ▼

A multi-layer extruded article useful for packaging materials, comprising a gas-barrier layer and a polyolefin layer laminated on at least one of the opposite sides of the gas-barrier layer, the gas-barrier layer being made of a mixture comprising a saponification product of an ethylene-vinyl acetat

A multi-layer extruded article useful for packaging materials, comprising a gas-barrier layer and a polyolefin layer laminated on at least one of the opposite sides of the gas-barrier layer, the gas-barrier layer being made of a mixture comprising a saponification product of an ethylene-vinyl acetate copolymer, a saponification product of an ethylene-vinyl acetate copolymer having a different ethylene content from the first saponification product, and a polyvinyl alcohol.

대표청구항 ▼

A multi-layer extruded article comprising a gas-barrier layer and a polyolefin layer laminated on at least one of the opposite sides of the gas-barrier layer, the gas-barrier layer being made of a mixture comprising (a) a saponification product of an ethylene-vinyl acetate copolymer having an ethyle

A multi-layer extruded article comprising a gas-barrier layer and a polyolefin layer laminated on at least one of the opposite sides of the gas-barrier layer, the gas-barrier layer being made of a mixture comprising (a) a saponification product of an ethylene-vinyl acetate copolymer having an ethylene content of from 25 to 50 mol percent and a saponification degree of not less than 90 percent (Saponification Product A), (b) a saponification product of an ethylene-vinyl acetate copolymer having an ethylene content of from 60 to 98 mol percent and a saponification degree of not less than 20 percent (Saponification Product B), and (c) a polyvinyl alcohol having an average polymerization degree of from 300 to 3000 and a saponification degree of not less than 70 percent, wherein the ratio of the amounts of the aforementioned two saponification products (A:B) is in the range of from 98:2 to 50:50 by weight and wherein the amount of the polyvinyl alcohol is in the range of from 5 to 100 parts by weight per 100 parts by weight of the total weight of the two saponification products (A and B).