LIQUID PACKAGING CONTAINER

Title:

LIQUID PACKAGING CONTAINER

Document Type and Number:

WIPO Patent Application WO/2015/156334

Kind Code:

A1

Abstract:

Provided is a liquid packaging container which has good flexibility, transparency, high heat-seal strength, high bag breaking strength at ambient temperature and lower temperatures, and low (inner layer)-(inner layer) adhesiveness which are properties required for liquid packaging containers for medical use. Specifically provided is a liquid packaging container composed of a laminate having at least three layers, i.e., an inner layer comprising a resin composition (Y) as mentioned below, an intermediate layer, and an outer layer comprising a resin composition (Z) as mentioned below, wherein the intermediate layer comprises a resin composition (X) as mentioned below. The resin composition (X): a resin composition comprising 100 parts by mass of a polypropylene resin (1), 5 to 95 parts by mass of a specific thermoplastic elastomer (2) and 10 to 95 parts by mass of a specific ethylene-α-olefin copolymer (3). The resin composition (Y): a resin composition comprising 100 parts by mass of a polypropylene resin (1') and 5 to 250 parts by mass of a specific thermoplastic elastomer (2') (wherein a specific ethylene-α-olefin copolymer is not contained or, if contained, the specific ethylene-α-olefin copolymer is contained in an amount of less than 10 parts by mass). The resin composition (Z): a resin composition comprising 100 parts by mass of a polypropylene resin (1'') and 0 to 35 parts by mass of a specific thermoplastic elastomer (2'').

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Inventors:

TANAKA YUSUKE (JP)
JOGO YOSUKE (JP)
NOJIMA YUSUKE (JP)
OSHITA SHINYA (JP)

Application Number:

PCT/JP2015/061030

Publication Date:

October 15, 2015

Filing Date:

April 08, 2015

Export Citation:

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Assignee:

KURARAY CO (JP)

International Classes:

B65D65/40; A61J1/10; B32B25/14; B32B27/00; B32B27/32; C08F297/04; C08L23/08; C08L23/12; C08L53/02

Foreign References:

JP2003191405A	2003-07-08
JP2011093209A	2011-05-12
JP2002011839A	2002-01-15

Other References: