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Title:
レトルト包装用ポリプロピレン系シーラントフィルムおよびそれを用いた積層体
Document Type and Number:
Japanese Patent JP6694613
Kind Code:
B2
Abstract:
A polypropylene based sealant film for retort packaging includes a film made of a resin composition that contains 70 to 85 wt % of a propylene/ethylene block copolymer (a) and 15 to 30 wt % of a low-density polyethylene based polymer (b), wherein, as for the propylene/ethylene block copolymer (a), a proportion of a 20° C. xylene insoluble portion is 75 to 85 wt % relative to 100 wt % of (a), a limiting viscosity ([η]H) of the insoluble portion is 1.7 to 2.0 dl/g, and a limiting viscosity ([η]EP) of a soluble portion is 3.0 to 3.4 dl/g, and the low-density polyethylene based polymer (b) has a density of 0.900 to 0.930 g/cm3 and a melt flow rate of 1 to 10 g/10 minutes.

Inventors:
Toyoshima Ryo
Youichi Matsuura
Fukagai Yoshitaka
Application Number:
JP2016550280A
Publication Date:
May 20, 2020
Filing Date:
August 02, 2016
Export Citation:
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Assignee:
Toray Film Processing Co., Ltd.
International Classes:
B65D65/40; C08L23/06; C08L53/00
Domestic Patent References:
JP2011037454A
JP2000256532A
JP2003103729A
JP2006161033A
JP2003183462A
Foreign References:
WO2007046307A1
Attorney, Agent or Firm:
Force