Stock material or miscellaneous articles – Hollow or container type article – Shrinkable or shrunk
Patent
1997-05-19
2000-09-05
Wu, David W.
Stock material or miscellaneous articles
Hollow or container type article
Shrinkable or shrunk
428 357, 428 359, 428 352, 4283197, 428327, 428334, 428515, 428516, 4283179, 428910, B65B 5302
Patent
active
061139963
ABSTRACT:
A uniaxially heat-shrinkable, biaxially oriented, multilayer film having a polypropylene-containing core layer comprising at least 70 wt. % of said multilayer film and optionally, at least one polyolefin-containing skin layer adjacent said core layer, is prepared by biaxially orienting a coextrudate and therefore orienting said coextrudate by stretching 10 to 40 % in the machine direction. The core layer contains isotactic polypropylene and a sufficient amount of syndiotactic polypropylene to inhibit uniaxial heat shrinkage at temperature below about 50.degree. C. The skin layer can be selected from the group consisting of polypropylene, ethylene-propylene copolymer, polyethylene, and ethylene-propylene-butylene terpolymer.
REFERENCES:
patent: 3808304 (1974-04-01), Schirmer
patent: 4188350 (1980-02-01), Vicik et al.
patent: 4194039 (1980-03-01), Mueller
patent: 4377616 (1983-03-01), Ashcraft et al.
patent: 4390385 (1983-06-01), Ferguson et al.
patent: 4448792 (1984-05-01), Schirmer
patent: 4582752 (1986-04-01), Duncan
patent: 4632869 (1986-12-01), Park et al.
patent: 4769418 (1988-09-01), Mizuno et al.
patent: 4853602 (1989-08-01), Hommes et al.
patent: 4963418 (1990-10-01), Isaka et al.
patent: 5091236 (1992-02-01), Keller et al.
patent: 5091237 (1992-02-01), Schloegl et al.
patent: 5176954 (1993-01-01), Keller et al.
patent: 5264277 (1993-11-01), Frognet et al.
patent: 5267277 (1993-11-01), Scarola et al.
patent: 5288548 (1994-02-01), Weber
patent: 5292561 (1994-03-01), Peiffer et al.
patent: 5489454 (1996-02-01), Peiffer et al.
patent: 5620803 (1997-04-01), Oyama et al.
patent: 5691043 (1997-11-01), Keller et al.
patent: 5851610 (1998-12-01), Ristey et al.
Amon Moris
Peet Robert G.
Pellingra, Jr. Salvatore J.
Cuomo Lori F.
Lu-Rutt Caixia
Mobil Oil Corporation
Santini Dennis F.
Wu David W.
LandOfFree
Composition for uniaxially heat shrinkable biaxially oriented po does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition for uniaxially heat shrinkable biaxially oriented po, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition for uniaxially heat shrinkable biaxially oriented po will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2209777