DISINTEGRATABLE FILM AND WINDOWED ENVELOPE USING SAME

Title:

DISINTEGRATABLE FILM AND WINDOWED ENVELOPE USING SAME

Document Type and Number:

WIPO Patent Application WO/2005/051659

Kind Code:

A1

Abstract:

Disclosed is a highly transparent, biodegradable film which is easily disintegrated in water. When such a film is used as a window material for a windowed envelope, it is not necessary to remove the film from a used envelope for recycling the used envelope as waste paper stock. Specifically, a disintegratable film (1) is obtained by forming a water-resistant layer (3) composed of a biodegradable resin on one side of a water-soluble base film (2) which is composed of a polyvinyl alcohol resin.

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JP2976186	[Title of Invention] Envelope Form for Card-Sending Mail and Envelope for Card-Sending Mail
JPH0985821	STYRENIC RESIN STRETCHED FILM

Inventors:

KASHIWAZAKI YUKI (JP)

Application Number:

PCT/JP2004/017566

Publication Date:

June 09, 2005

Filing Date:

November 26, 2004

Export Citation:

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Assignee:

PACK CORP (JP)
KASHIWAZAKI YUKI (JP)

International Classes:

B65D27/04; B32B27/30; B65D65/46; C08J7/052; (IPC1-7): B32B27/30

Foreign References:

JP2003276122A	2003-09-30
JP2003251759A	2003-09-09
JP2003181992A	2003-07-03
JP2003145693A	2003-05-20
JPH1080979A	1998-03-31
JPH08244172A	1996-09-24
JPH06142127A	1994-05-24

Attorney, Agent or Firm:

Shimizu, Hisayoshi (4-26 Minamisemba 3-chome, Chuo-k, Osaka-shi Osaka 81, JP)

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