Blown tube collapse frame assembly

Details Blown tube collapse frame assembly Blown tube collapse frame assembly

1977-08-12

1979-10-09

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264209, 264237, B29C 1500

Patent

active

041706242

ABSTRACT:
In a blown tube process of producing thermoplastic film or sheeting, the blown tube is collapsed by passing it through a trapezoidal frame assembly to change the circular cross section of the tube to a square cross section. The square cross section tube passing from the trapezoidal frame assembly is then passed through a predeterminedly controlled flattening transition section to a pair of nip rolls in a manner that the film arrives at the nip rolls with minimal stretching.

REFERENCES:
patent: 2641022 (1953-06-01), Kress
patent: 2720680 (1955-10-01), Gerow
patent: 3335208 (1967-08-01), Harris
patent: 3355770 (1967-12-01), Augustin
patent: 3930781 (1976-01-01), Upmeier

Affiliated with

Also associated with

Rating

Blown tube collapse frame assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Blown tube collapse frame assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blown tube collapse frame assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1965216