Stock material or miscellaneous articles – Web or sheet containing structurally defined element or...
Patent
1995-07-03
1998-07-07
Acquah, Samuel A.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
428 98, 428220, 428221, 26421112, 264291, 264294, B32B 702
Patent
active
057765928
ABSTRACT:
The present invention relates to polyester films which have properties making them suitable for closures, especially of pots for fresh dairy products such as yoghurts, cheeses or desserts. It therefore consists of polyester films which have a thickness of 5 to 30 micrometers and which satisfy the use test, exhibiting a crystallinity higher than or equal to 50%, tensile strengths in the lengthwise direction (MDTS) and in the diagonal directions (.+-.45 degrees relative to the lengthwise direction) (TS45) which are such that: (MDTS)+(TS45).ltoreq.40 kg/mm.sup.2 (392.4 MPa) and elongations at break in the lengthwise direction (MDEB) and in the diagonal directions (.+-.45 degrees relative to the lengthwise direction) (EB45) which are such that: (MDEB)+(EB45).gtoreq.290%. The invention also relates to a process for the preparation of such films and to their use for closures.
REFERENCES:
patent: 3702357 (1972-11-01), Smith, Jr.
patent: 4867937 (1989-09-01), Li et al.
patent: 4985537 (1991-01-01), Utsumi et al.
Benhayoun Jean-Paul
Marze Alain
Melquioni Brunot
Acquah Samuel A.
Rhone-Poulenc Films
LandOfFree
Polyester films usable for closures and process for their prepar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyester films usable for closures and process for their prepar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyester films usable for closures and process for their prepar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1203449