MULTILAYER STRUCTURE AND METHOD FOR PRODUCING SAME

MULTILAYER STRUCTURE AND METHOD FOR PRODUCING SAME

Provided is a multilayer structure, comprising: a layer of a resin composition (A); a layer of a saponified ethylene-vinyl acetate copolymer (B) having an ethylene content of from 20 to 65 mol% and having a degree of saponification of vinyl acetate units of 96% or more; and a layer of polyolefin (C)...

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Hauptverfasser: KITAMURA, MASAHIRO, HANEDA, YASUHIKO, IGARASHI, TAKEYUKI
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
TRANSPORTING
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creator KITAMURA, MASAHIRO
HANEDA, YASUHIKO
IGARASHI, TAKEYUKI
description Provided is a multilayer structure, comprising: a layer of a resin composition (A); a layer of a saponified ethylene-vinyl acetate copolymer (B) having an ethylene content of from 20 to 65 mol% and having a degree of saponification of vinyl acetate units of 96% or more; and a layer of polyolefin (C) arranged on one side or both sides of those layers, wherein the resin composition (A) contains polyolefin (D), a saponified ethylene-vinyl acetate copolymer (E) having an ethylene content of from 20 to 65 mol% and having a degree of saponification of vinyl acetate units of 96% or more, and a saponified ethylene-vinyl acetate copolymer (F1) having an ethylene content of from 68 to 98 mol% and having a degree of saponification of vinyl acetate units of 20% or more and/or an acid-modified ethylene-vinyl acetate copolymer (F2) having an ethylene content of from 68 to 98 mol%, the saponified ethylene-vinyl acetate copolymer (E) has a mass ratio [E/(F1 + F2)] of from 0.05 to 30 to a total amount of the saponified ethylene-vinyl acetate copolymer (F1) and the acid-modified ethylene-vinyl acetate copolymer (F2), the polyolefin (D) has the saponified ethylene-vinyl acetate copolymer (E) having an average particle diameter of from 0.1 to 1.8 µm dispersed in a matrix thereof, the layer of the resin composition (A) has a thickness of from 50 to 1000 µm, and the layer of the polyolefin (C) has a thickness of from 25 to 1000 µm. This enables to provide a multilayer structure having good gas barrier.properties after retort processing and a good appearance.
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subjects LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
TRANSPORTING
title MULTILAYER STRUCTURE AND METHOD FOR PRODUCING SAME
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