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:
Nov. 02, 2004
Filed:
Mar. 05, 2003
Yoichi Obata, Sodegaura, JP;
Takeshi Ebara, Chiba, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
Disclosed is a resin composition comprising from 20 to 99 parts by weight of a propylene-based polymer A having an MFR of from 0.3 to 20 g/10 min and a melting point Tm of from 125 to 140° C. and from 1 to 80 parts by weight of a propylene-based polymer B having an MFR of from 21 to 200 g/10 min and a melting point Tm of from 135 to 170° C., wherein a ratio Tm /Tm is less than 1, wherein a ratio MFR /MFR is 0.01<MFR /MFR <1 and wherein the resin composition has an MFR of from 0.3 to 20 g/10 min and a melting point of from 130 to 145° C. A heat-shrinkable film obtained by stretching the composition at least uniaxially is also disclosed which is superior in rigidity, heat shrinkage, weld-cut sealability and stretch processability. Incorporation of a nucleating agent improves the transparency of the film.