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:
Mar. 23, 1999
Filed:
Sep. 30, 1997
Tien-Kuei Su, Fairport, NY (US);
Robert V Poirier, Fairport, NY (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
A multilaminar high density polyethylene (HDPE) film is provided having high biaxial orientation. The film includes a HDPE substrate, at least one outer layer of a propylene copolymer, and at least one layer of an adhesion promoter material positioned between the outer layer and the HDPE substrate, to efficiently mediate adhesion therebetween. The adhesion promoter is preferably a polyethylene material having a density lower than that of the HDPE base material. Preferred adhesion promoter materials include very low density polyethylene (VLDPE), high pressure low density polyethylene (HP-LDPE), linear low density polyethylene (LLDPE), and medium density polyethylene (MDPE). The film is high biaxially oriented, being, stretched in the machine direction to a degree of from about 5:1 to about 8:1, preferably from about 6:1 to about 7:1, and stretched in the transverse direction to a degree of from about 6:1 to about 15:1, preferably from about 9:1 to about 13:1.