The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2010
Filed:
Jun. 20, 2005
Takashi Sato, Tsuchiura, JP;
Kazuyuki Yamane, Iwaki, JP;
Juichi Wakabayashi, Ishioka, JP;
Tomoaki Sato, Ishioka, JP;
Takehisa Suzuki, Matsudo, JP;
Takashi Sato, Tsuchiura, JP;
Kazuyuki Yamane, Iwaki, JP;
Juichi Wakabayashi, Ishioka, JP;
Tomoaki Sato, Ishioka, JP;
Takehisa Suzuki, Matsudo, JP;
Kureha Corporation, Tokyo, JP;
Abstract
A polyglycolic acid resin-based multilayer sheet, comprising: a plant substrate sheet and a biodegradable resin layer laminated by melt-adhesion onto the plant substrate sheet, wherein said biodegradable resin layer comprises one or plural layer including at least a polyglycolic acid resin layer, and the multilayer sheet includes on the substrate sheet a melt-adhesion layer comprising a biodegradable resin exhibiting a melt viscosity of 10-5.0×10Pa·sec as measured at a temperature of 240° C. and a shear speed of 122 secand having a melting point of at most 235° C. The multilayer sheet has a laminate structure composed of biodegradable materials exerting little load to the environment at the time of disposable thereof and yet is excellent in oxygen-barrier property and moisture resistance, thus being suitable as a food container-forming material.