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:
May. 12, 1992
Filed:
Jul. 02, 1990
Applicant:
Inventors:
Assignee:
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08F / ; C08L / ;
U.S. Cl.
CPC ...
525 542 ; 525 5421 ; 525 5423 ; 525 5424 ; 525 5426 ; 525 543 ; 525 5431 ; 525 59 ; 525 63 ; 525 64 ; 525 65 ; 525 69 ; 525 71 ; 525 78 ; 525 79 ; 525 80 ; 525 83 ; 525 88 ; 525 89 ; 525 90 ; 525 92 ; 525 93 ; 525 94 ;
Abstract
Articles molded from a moisture shrinkable polymer are provided. The article are stretched. The moisture shrinkable polymer may comprise a graft copolymer, a block copolymer, or a blend of a thermoplastic polymer with a hydrophilic synthetic polymer or a polysaccharide. The article absorb moisture and shrink at room temperature of not more than 50.degree. C. in a highly humid atmosphere. The articles experience little decrease in tensile strength during shrinkage by moisture absorption or by prolonged storage after the moisture absorption. The article is useful when used as a film for shrink wrapping commodities which are not resistant to heat.