Biaxially oriented film

Details Biaxially oriented film Biaxially oriented film

1993-12-02

1995-10-10

Buffalow, Edith

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428516, 428910, 428 366, B32B 2708

Patent

active

054569796

ABSTRACT:
Polymeric, thin oriented films can be made by use of a combination of a hot blown process and a blown bubble process, i.e. a double bubble process. The resulting film has use in replacing PVC for in store stretch wrap applications. Very low density polyethylene, VLDPE, is an especially preferred material for this process. It may be used as a monolayer, or as one layer of a multilayer structure. In practicing the invention, the polymer is extruded and hot blown, and heated to a temperature above its orientation temperature. This heating can be accomplished by the use of a heated liquid reservoir or sock disposed at the lower end of the primary bubble, inside the bubble. The hot blown heated film is then passed through a first set of pinch rolls, re-inflated into a blown bubble, and collapsed at a second set of pinch rolls. Thin, tough and elastic packaging materials are obtained by this process.

REFERENCES:
patent: 3355531 (1967-11-01), Barnhart
patent: 3456044 (1969-07-01), Pahlke
patent: 3551540 (1970-12-01), Pellicciari et al.
patent: 3555604 (1971-01-01), Pahlke
patent: 3576658 (1971-04-01), Notomi
patent: 3661482 (1972-05-01), Brown, Jr.
patent: 3894907 (1975-07-01), Sudo
patent: 3932563 (1976-01-01), Argurio et al.
patent: 4048378 (1977-09-01), Peizek
patent: 4066811 (1978-01-01), Hino et al.
patent: 4073782 (1978-02-01), Kishi et al.
patent: 4333968 (1982-06-01), Nahmias
patent: 4354997 (1982-10-01), Mizutani et al.
patent: 4367256 (1983-01-01), Biel
patent: 4389450 (1983-06-01), Schaefer et al.
patent: 4390587 (1983-06-01), Yoshimura et al.
patent: 4399181 (1983-08-01), Yoshimura et al.
patent: 4421823 (1983-12-01), Theisen et al.
patent: 4425268 (1984-01-01), Cooper
patent: 4484971 (1984-11-01), Wang
patent: 4501634 (1985-02-01), Yoshimura et al.
patent: 4524099 (1985-06-01), De Luccio
patent: 4588650 (1986-05-01), Mientus et al.
patent: 4608286 (1986-08-01), Motoishi et al.
patent: 4619859 (1986-10-01), Yoshimura et al.
patent: 4626455 (1986-12-01), Karabedian
patent: 4652490 (1987-03-01), Arita et al.
patent: 4657982 (1987-04-01), Breck et al.
patent: 4671987 (1987-06-01), Knott, II et al.
patent: 4713282 (1987-12-01), Yazaki et al.
patent: 4778699 (1988-10-01), Knox, III et al.
patent: 4820557 (1989-04-01), Warren
patent: 4820589 (1989-04-01), Debraski et al.
patent: 4835218 (1989-05-01), Yoshimura et al.
patent: 4837084 (1989-06-01), Warren
patent: 4840823 (1989-06-01), Chigami et al.
patent: 4851272 (1989-07-01), Knox, III
patent: 4863769 (1989-09-01), Lustig et al.
patent: 4923722 (1990-05-01), Kondo et al.
patent: 4923750 (1990-05-01), Jones
patent: 5298202 (1992-10-01), Schirmer

Affiliated with

Also associated with

Rating

Biaxially oriented film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Biaxially oriented film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biaxially oriented film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2309509