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:
Jul. 04, 2000
Filed:
Nov. 12, 1997
George N Eichbauer, Conyers, GA (US);
Robert J Silver, Macedon, NY (US);
Tenneco Packaging, Inc., Evanston, IL (US);
Abstract
A multilayer, thermoplastic roll wrap film containing at least three polymeric film layers and comprised of an outer cling layer, a non-cling outer layer, and at least one inner polymeric layer. The roll wrap film has at least one inner polymeric layer, located between the outer cling layer and then non-cling outer layer. The non-cling outer layer is preferably comprised of a high pressure, low density polyethylene resin having a melt index of from about 0.5 to about 6. The inner polymeric layer comprises a low polydispersity polymer. The low polydispersity polymer has a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min., and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The roll wrap film has a transverse tear resistance of at least 400 grams/mil as measured by ASTM D1922, a machine direction tear resistance as measured by ASTM D1922 of at least 150 grams/mil and a F-50 dart drop of at least 600 grams. It is contemplated that additional layers may be added to the present invention.