Film bead heating for simultaneous stretching

Details Film bead heating for simultaneous stretching Film bead heating for simultaneous stretching

1996-12-11

1998-05-19

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Reshaping, drawing or stretching

264216, 2642358, 2642902, 4251744, B29C 5516

Patent

active

057531722

ABSTRACT:
An improved process for simultaneous biaxial stretching of a thermoplastic polymer film having beaded edges in a tenter frame consisting of gripping the beaded edges of the film with tenter clips and increasing the temperature of the beaded edges to within the film orientation temperature range prior to or during simultaneous stretching, and in subsequent stretching or heat-setting steps, by focusing heat on the beaded edges of the film. Thermoplastic films, such as polyethylene terephthalate and polyethylene naphthalate, having a final thickness of from 0.2 to 350 microns after simultaneous stretching can be prepared.

REFERENCES:
patent: 4237088 (1980-12-01), Yoshimura et al.
patent: 4652409 (1987-03-01), Leese et al.
patent: 5429785 (1995-07-01), Jolliffe

Affiliated with

Also associated with

Rating

Film bead heating for simultaneous stretching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Film bead heating for simultaneous stretching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film bead heating for simultaneous stretching will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1849958