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. 26, 1998
Filed:
Mar. 28, 1996
Akihiko Yamamoto, Ichihara, JP;
Naoshi Hamada, Ichihara, JP;
Toshihiro Nishimura, Ichihara, JP;
Kouji Kitahara, Ichihara, JP;
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
Disclosed is a polyethylene resin composition for heavy-duty packaging bag, which has a specific MFR, a specific density and a specific melt tension and which comprises (I) a linear low-density polyethylene resin prepared from ethylene and an .alpha.-olefin of 4 or more carbon atoms and having a specific MFR, a specific molecular weight distribution and a density of 0.900 to 0.918 g/cm.sup.3, (II) a linear medium or high-density polyethylene resin having a density of 0.935 to 0.970 g/cm.sup.3 and (III) a high-pressure low-density polyethylene resin having a density of 0.915 to 0.924 g/cm.sup.3, in a specific ratio of components. Also disclosed is a polyethylene resin film prepared from said composition. The composition is able to provide a film which is excellent in low-temperature properties such as low-temperature drop-bag strength and can be advantageously used for a heavy-duty packaging bag even in a cold district of below-freezing temperature. The polyethylene resin film exerts the above-mentioned effects.