Method for initiating biaxial stretching of plastic tubes and ap

Details Method for initiating biaxial stretching of plastic tubes and ap Method for initiating biaxial stretching of plastic tubes and ap

1980-01-24

1981-09-22

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

4253261, 4253871, B29D 724

Patent

active

042909961

ABSTRACT:
A method for rendering initiation of stretching easier in the production of biaxial stretched film of plastic tube carried out by enclosing gas in said tube and by the difference in the peripheral velocity between delivery nip rolls and take-up nip rolls is provided. This method is characterized by passing said tube between at last one pair of nipping means for enclosing gas, having therebetween a clearance adjustable in the range of 1.about.10 mm. The nipping means are provided before or behind said take-up nip rolls and driven at a peripheral speed same as that of said take-up nip rolls.

REFERENCES:
patent: 2744336 (1956-05-01), Milne
patent: 3608019 (1971-09-01), Sato et al.
patent: 3853448 (1974-12-01), Yazawa
patent: 3960997 (1976-06-01), Sorensen

Affiliated with

Also associated with

Rating

Method for initiating biaxial stretching of plastic tubes and ap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for initiating biaxial stretching of plastic tubes and ap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for initiating biaxial stretching of plastic tubes and ap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-334996