Title:
多層フィルム
Document Type and Number:
Japanese Patent JP6798268
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a multilayer film capable of providing a packaging bag excellent in transparency, drop-bag strength and blocking resistance.SOLUTION: There is provided a multilayer film having an intermediate layer between two surface layers and satisfying all of following requirement (1), requirement (2) and requirement (3), wherein the intermediate layer is a layer containing at least two kinds of olefin polymers forming a sea-island type phase separation structure, the surface layer is a layer containing an ethylene-α-olefin copolymer having a constitutional unit derived from ethylene and an α-olefin having 4 to 20 carbon atoms and a propylene polymer (II). Requirement (1): haze is 25% or less. Requirement (2): heat seal strength when the films each other are heat sealed at 200°C is 35 N/15 mm or more. Requirement (3): heat seal strength when the films each other are heat sealed at 170°C is 35 N/15 mm or less.SELECTED DRAWING: None
Inventors:
Kensuke Onishi
Application Number:
JP2016224772A
Publication Date:
December 09, 2020
Filing Date:
November 18, 2016
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B32B27/32; B65D65/40
Domestic Patent References:
| JP2013111826A | ||||
| JP2013071409A | ||||
| JP2014124818A | ||||
| JP2002172744A | ||||
| JP2009154332A | ||||
| JP2006104279A |
Attorney, Agent or Firm:
Toru Nakayama
Toru Sakamoto
Toru Sakamoto