Title:
POROUS FILM FOR CONSTITUENT ELEMENT OF HEAT-SEALED BAG, CONSTITUENT ELEMENT OF HEAT-SEALED BAG, AND DISPOSABLE POCKET WARMER
Document Type and Number:
WIPO Patent Application WO/2011/048995
Kind Code:
A1
Abstract:
Provided is a porous film for a constituent element of a heat-sealed bag having excellent processability (bag productivity), which shows a high seal strength and causes little edge gap in sealing when heat-sealed to form a bag. Also provided is a porous film for a constituent element of a heat-sealed bag wherein a polyolefin-based nonwoven fabric can be used as a nonwoven fabric for lamination (composition). The aforesaid porous film (11) for a constituent element of a heat-sealed bag, which comprises a porous film layer (layer A) (11a) and another porous film layer (layer B) (11b), is characterized by containing, in the resin components constituting said layer A (11a), 50 wt% or more of a polyethylene (a) having a melting point of 90oC or higher but lower than 110oC, and, in the resin components constituting said layer B (11b), 50 wt% or more of a polyethylene (b) having a melting point of 110oC or higher but not higher than 140oC.
Inventors:
OHNISHI KAORI (JP)
Application Number:
PCT/JP2010/068006
Publication Date:
April 28, 2011
Filing Date:
October 14, 2010
Export Citation:
Assignee:
NITTO LIFETEC CORP (JP)
OHNISHI KAORI (JP)
OHNISHI KAORI (JP)
International Classes:
B32B27/32; A61F7/08; B32B5/22; B65D65/40
Domestic Patent References:
| WO2009098842A1 | 2009-08-13 |
Foreign References:
| JPH1156894A | 1999-03-02 | |||
| JP2002200709A | 2002-07-16 | |||
| JP2006158500A | 2006-06-22 |
Attorney, Agent or Firm:
GOTO, YUKIHISA (JP)
Yukihisa Goto (JP)
Yukihisa Goto (JP)
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