MULTILAYER CONTAINER AND METHOD FOR MANUFACTURING MULTILAYER CONTAINER

WIPO Patent Application WO/2023/145275

A1

Provided are: a multilayer container which has excellent adhesiveness between a polyolefin layer and a polyamide resin layer and excellent moldability; and a method for manufacturing the multilayer container. The multilayer container comprises a polyolefin layer including an acid-modified polyolefin and an acid-unmodified polyolefin, and a polyamide resin layer that is in contact with the polyolefin layer and includes a polyamide resin, wherein: the polyamide resin includes a polyamide resin (a) containing a diamine-derived constituent unit and a dicarboxylic acid-derived constituent unit, at least 70 mol% of the diamine-derived constituent unit being derived from methaxylylene diamine, and at least 30 mol% of the dicarboxylic acid-derived constituent unit being derived from α,ω-linear aliphatic dicarboxylic acid having 4 to 20 carbon atoms; the melt flow rate of the acid-unmodified polyolefin is at least 20 g/10 minutes; the melt flow rate of the polyamide resin included in the polyamide resin layer is at least 5 g/10 minutes; and the difference between the melt flow rate of the polyolefin layer and the melt flow rate of the polyamide resin layer is in the range of 10-53 g/10 minutes.

OGURO HATSUKI (JP)
KOUNO KENJI (JP)
MIYABE TAKANORI (JP)

PCT/JP2022/045479

August 03, 2023

December 09, 2022

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MITSUBISHI GAS CHEMICAL CO (JP)

B65D65/40; B32B27/00; B32B27/32; B32B27/34

JP2021080025A	2021-05-27
JP2018126315A	2018-08-16
JP2018090318A	2018-06-14
JP2006131275A	2006-05-25

SIKS & CO. (JP)

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