MULTILAYER CONTAINER, METHOD FOR MANUFACTURING SAME, AND METHOD FOR MANUFACTURING RECLAIMED POLYESTER

• Main Authors: YAMADA, Takumi, OTSUKA, Kosuke, DAITO, Masayuki
• Format: Patent
• Language: English; French; Japanese
• Published: 10.09.2021
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; GENERAL PROCESSES OF COMPOUNDING; HANDLING THIN OR FILAMENTARY MATERIAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

A multilayer container having a polyester layer that contains a polyester resin (X), and a polyamide layer that contains a polyamide resin (Y), a yellowing-suppressing agent (A), and an oxidation-promoting agent (B). The polyamide resin (Y) content is 0.05-7.0 mass% relative to the total mass of the entire polyamide layer and the entire polyester layer. The yellowing-suppressing agent (A) is a dye, and the yellowing-suppressing agent (A) content is 1-30 ppm relative to the total mass of the entire polyamide layer and the entire polyester layer. Contenant multicouche comportant une couche de polyester qui contient une résine de polyester (X), et une couche de polyamide qui contient une résine de polyamide (Y), un agent anti-jaunissement (A) et un agent favorisant l'oxydation (B). La teneur en résine de polyamide (Y) varie de 0,05 à 7,0 % en masse par rapport à la masse totale de toute la couche de polyamide et de toute la couche de polyester. L'agent anti-jaunissement (A) est un colorant, et la teneur en agent anti-jaunissement (A) varie de 1 à 30 ppm par rapport à la masse totale de toute la couche de polyamide et de toute la couche de polyester. ポリエステル樹脂（Ｘ）を含むポリエステル層と、ポリアミド樹脂（Ｙ）、黄変抑制剤（Ａ）及び酸化促進剤（Ｂ）を含むポリアミド層とを有し、ポリアミド樹脂（Ｙ）の含有量が、全ポリアミド層及び全ポリエステル層の合計量に対して、０．０５～７．０質量％であり、黄変抑制剤（Ａ）が染料であり、黄変抑制剤（Ａ）の含有量が、全ポリアミド層及び全ポリエステル層の合計量に対して、１～３０ｐｐｍである、多層容器。