POLYAMIDE STRETCHED FILM

• Main Author: NANBA HIROYUKI
• Format: Patent
• Language: English
• Published: 10.04.2008
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a polyamide based laminated biaxially stretched film having excellent oxygen gas barrier properties, excellent bending pinhole resistance and toughness. SOLUTION: The polyamide based laminated biaxially stretched film is a multilayered stretched film containing at least two layers, that is, a layer based on a polyamide resin (X) and a layer (B) comprising a resin Z which contains an aliphatic polyamide resin (Y) and the polyamide resin (X). The polyamide resin (X) is obtained using meta-xylylenediamine and a 6-12C α, ω-aliphatic dicarboxylic acid as main raw materials and the resin (Z) is based on the aliphatic polyamide resin (Y) and a cut waste material at the time of production of the film is mixed with the aliphatic polyamide resin (Y). COPYRIGHT: (C)2008,JPO&INPIT