Ned R Pendleton

US Patent:

60133783, Jan 11, 2000

Filed:

Mar 17, 1997

Appl. No.:

8/818366

Inventors:

Thomas A. White - Farmington NY
Ned R. Pendleton - Fairport NY

Assignee:

Tenneco Packaging - Evanston IL

International Classification:

B32B 2732

US Classification:

428516

Abstract:

A polymeric multilayer film is disclosed that has improved gloss, dart drop and total energy dart drop while having structural qualities that are not significantly compromised. The film is composed of first film layer of a low polydispersity polyethylene copolymer and a second film layer of a high molecular weight high density polyethylene (HMW HDPE) polymer. The first film layer polymer has a polydispersity of from about 1 to about 4. In a preferred embodiment, this low polydispersity polymer is formed in the presence of a metallocene catalyst. The HMW HDPE polymer has a melt index of less than 0. 1 and a density of at least about 0. 940 g/cm. sup. 3. Any of the layers of the film may be constructed of polymer blends with additional layers being contemplated.

US Patent:

47478152, May 31, 1988

Filed:

Nov 17, 1986

Appl. No.:

6/931885

Inventors:

Gordon L. Benoit - Macedon NY
James R. Gavin - Pittsford NY
Ned R. Pendleton - Macedon NY
William Randolph - Marion NY

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

B65B 114
B65D 3002

US Classification:

493194

Abstract:

The present invention relates to a collection of ultra-thin bags and a collection of bags per se wherein said bags are made by providing two separated thermoplastic films; forming transversely across each separated film, lines of weakness extending from one edge of each film to the other, with each line spaced from the next a bag length distance apart; bringing the films together in face-to-face relationship with the lines of weakness across one film in registration with those of the other films; sealing the films transversely along lines parallel with and immediately adjacent to the lines of weakness; slit-sealing the film layers at one or more bag width intervals to complete individual but interconnected bag structures; and collecting each strip of interconnected bags into a volumetrically efficient form.