Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LAMINATED SHEET AND FORMED CONTAINER
Document Type and Number:
WIPO Patent Application WO/2017/069127
Kind Code:
A1
Abstract:
Provided is a perfectly-decomposable, biodegradable barrier sheet that has an excellent thermoformability and oxygen barrier performance, and can transform into carbon dioxide and water via microbial degradation (biodegradation) during composting and thus return to nature. Further provided is a container obtained by thermoforming the barrier sheet. This laminated sheet is provided with an oxygen-barrier resin layer and biodegradable resin layers laminated via an adhesive layer to both surfaces of the oxygen-barrier resin layer. The total percentage by mass of the biodegradable resin layers is at least 90% of the entire sheet, and the percentage by mass of each biodegradable resin layer is at least 10% of the entire sheet. The oxygen transmission rate of the entire sheet does not exceed 10cc/m2∙day. At least one substance selected from polylactic acid, polybutylene succinate, polyhydroxybutyrate, polycaprolactone, polyhydroxyalkanoate, polyglycolic acid, modified polyvinyl alcohol, and starch is used in the biodegradable resin.

Inventors:
TOKUNAGA HISATSUGU (CN)
KUMAKURA SEIICHI (JP)
MURAOKA TAKASHI (JP)
Application Number:
PCT/JP2016/080876
Publication Date:
April 27, 2017
Filing Date:
October 18, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
B32B27/36; B32B1/02; B32B7/02
Foreign References:
JP2013212682A2013-10-17
JPH0671825A1994-03-15
JP2008155433A2008-07-10
JP2008155432A2008-07-10
JP2008221808A2008-09-25
JP2008221733A2008-09-25
Other References:
See also references of EP 3366470A1
Attorney, Agent or Firm:
ITO Koji (JP)
Download PDF: