Internal dusting of film tubes composed of thermoplastics

Details Internal dusting of film tubes composed of thermoplastics Internal dusting of film tubes composed of thermoplastics

1985-07-30

1987-04-21

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Bulk deposition of particles by differential fluid pressure

264558, 264559, 264562, 264130, 264131, 425 71, 425 94, 425 97, 425104, 4253261, B29C 4788

Patent

active

046595325

ABSTRACT:
A process for providing film tubes with anti-blocking means in that the film tube is cooled internally by an aqueous suspension containing a suspended release agent directly after extrusion, the excess suspensions are sucked from the interior and the tube, which is additionally cooled on the exterior in a water bath, is freed of remaining liquid by squeezing rollers.

REFERENCES:
patent: 2488571 (1949-11-01), Trull
patent: 2541064 (1951-02-01), Irons
patent: 2634459 (1953-04-01), Irons
patent: 3260776 (1966-07-01), Lindstrom, Jr. et al.
patent: 3280233 (1966-10-01), Wiggins
patent: 4048428 (1977-09-01), Baird, Jr. et al.

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