Multiple calender process for forming non-fibrous high...

Details Multiple calender process for forming non-fibrous high... Multiple calender process for forming non-fibrous high...

2007-07-23

2010-06-22

Theisen, Mary Lynn F (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Plural, intermittent pressure applying

C264S119000, C264S288400

Reexamination Certificate

active

07740779

ABSTRACT:
A multi-calender process for forming a high modulus, high strength component for use in ballistic-resistant articles. The process includes forming ultrahigh molecular weight polyethylene powder into a uniform sheet at a low pressure. Multiple calender units mold and draw the uniform sheet into a non-fibrous, monolithic, ultra high molecular weight polyethylene tape. The multi-calender process and subsequent draw stages stretch the non-fibrous UHMWPE tape to a total draw of at least 100 to 1 to produce a high modulus, high strength UHMWPE component with a modulus of 1,400 grams per denier or greater. The multi-calender process of the present invention enables production of a high-strength, high-modulus UHMWPE component for ballistic-resistant articles and other applications at significantly higher rates and at a lower unit cost.

REFERENCES:
patent: 4246390 (1981-01-01), Seaver
patent: 4436682 (1984-03-01), Knopp
patent: 4820466 (1989-04-01), Zachariades
patent: 5002714 (1991-03-01), Sano et al.
patent: 5030402 (1991-07-01), Zacharides
patent: 5200129 (1993-04-01), Kobayashi et al.
patent: 5407623 (1995-04-01), Zachariades et al.
patent: 5721334 (1998-02-01), Burstein et al.
patent: 6951685 (2005-10-01), Weedon et al.

Affiliated with

Also associated with

Rating

Multiple calender process for forming non-fibrous high... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple calender process for forming non-fibrous high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple calender process for forming non-fibrous high... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4238077