Thermoformable multilayer polymeric film

Details Thermoformable multilayer polymeric film Thermoformable multilayer polymeric film

2005-09-13

2005-09-13

Seidleck, James J. (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S475500

Reexamination Certificate

active

06942927

ABSTRACT:
A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of “memory”, clarity, gloss and low haze.

REFERENCES:
patent: 4755419 (1988-07-01), Shah
patent: 4909726 (1990-03-01), Bekele
patent: 4937112 (1990-06-01), Schirmer
patent: 5562996 (1996-10-01), Kuriu et al.
patent: 5837358 (1998-11-01), Bauer et al.
BASF, “Ultramid B KR4407”, printed from http://www.basf.com/static/OpenMarket/Xcelerate/Preview_cid-10510164364045_pubid-1044368075691_c-pparticle.html, Dec. 2003.
BASF, “Ultramid B KR4418”, printed from http://www.basf.com/static/OpenMarket/Xcelerate/Preview_cid-105106436405_pubid-1044368075691_c-pparticle.html, Dec. 2003.
Equistqar, “Plexar PX 108”, printed from equistarchem.com on Jan. 9, 2004.
Invoice No. 733-019-032—Curlon Grade 1036 dated Jan. 19, 1993 (vendor Copaz Corp.).
Invoice No. 733-039-028—Curlon Grade 1036 dated Feb. 8, 1993 (vendor FDL Foods Inc.).
Invoice No. 733-085-073—Curlon Grade 1036 dated Mar. 26, 1993 (vendor Copaz Corp.).
Invoice No. 733-162-048—Curlon Grade 1036 dated Jun. 11, 1993 (vendor Jennie-O Foods Inc.).

Affiliated with

Also associated with

Rating

Thermoformable multilayer polymeric 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 Thermoformable multilayer polymeric film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoformable multilayer polymeric film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3380352