発泡性積層体用樹脂組成物、発泡性積層体、その製造方法及びそれを用いた発泡加工紙並びに断熱容器

Title:

発泡性積層体用樹脂組成物、発泡性積層体、その製造方法及びそれを用いた発泡加工紙並びに断熱容器

Document Type and Number:

Japanese Patent JP6645175

Kind Code:

B2

Abstract:

The present invention provides a polyethylene resin composition for a foamable laminate which gives foamed cells having sufficient height and good appearance (foamed layer), even in the case of machining under high speed conditions at the time of extrusion lamination, a foamable laminate, a method for producing the same, a foamed converted paper, and a heat insulating container. The invention relates to a polyethylene resin composition for a foamable laminate, which is used for forming a polyethylene-based resin layer (I) for foaming on at least one side of a substrate mainly composed of paper, wherein the resin composition comprises a polyethylene-based resin (A) and satisfies the following properties (a-1) to (a-4): (a-1) the melt flow rate (MFR) of the polyethylene-based resin (A) as measured in accordance with JIS K7210 (190°C, a load of 21.18N) is 7 g/10 minutes or more and less than 20 g/10 minutes, (a-2) the density of the polyethylene-based resin (A) in accordance with JIS K7112 at a test temperature of 23°C is from 0.900 to 0.930 g/cm 3 , (a-3) the oxygen induction time (OIT) at 180°C is 10 minutes or more and less than 190 minutes, (a-4) the memory effect (ME) of the polyethylene-based resin (A) as measured using a melt indexer to be used in JIS K7210 and under conditions of a cylinder temperature of 240°C and a constant-rate extrusion output of 3 g/minute is less than 2.0.

Inventors:

Keiichi Sasaki
Shinji Sakamoto

Application Number:

JP2015250598A

Publication Date:

February 14, 2020

Filing Date:

December 22, 2015

Export Citation:

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