Polylactic acid stretched film

Details Polylactic acid stretched film Polylactic acid stretched film

2011-08-09

2011-08-09

Wu, David (Department: 1762)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

C428S480000, C428S910000, C525S410000, C525S411000, C525S415000, C525S418000, C525S450000

Reexamination Certificate

active

07993745

ABSTRACT:
The object of the present invention is to provide a polylactic acid stretched film having biodegradability and excelling in transparency and heat resistance. The main feature is characterized in that a polylactic acid stretched film is composed of a polylactic acid composition containing poly-L-lactic acid and poly-D-lactic acid in which a peak ratio (peak 1/peak 2) of a peak height (peak 1) of a maximum endothermic peak of endothermic peaks within a range of 150 to 200° C. to a peak height (peak 2) of a maximum endothermic peak of endothermic peaks within a range of 205 to 240° C. in DSC measurements is equal to or less than 0.2.

REFERENCES:
patent: 2009/0035585 (2009-02-01), Wakaki et al.
patent: 2005-325286 (2005-11-01), None
patent: 2007-119553 (2007-05-01), None
patent: 2007-191550 (2007-08-01), None
patent: 2006/009285 (2006-01-01), None
patent: WO 2006/095923 (2006-09-01), None
Machine translation of JP 2005-325286 [online], accessed via the Internet [retrieved on May 14, 2010], URL: <http://www4.ipdl.inpit.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2005-325286>.
International Search R0port of PCT/JP2007/064834, Mailing Date of Sep. 4, 2007.

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