Process for producing oriented polyolefin films with enhanced ph

Details Process for producing oriented polyolefin films with enhanced ph Process for producing oriented polyolefin films with enhanced ph

1985-03-18

1987-07-28

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264514, 264557, 264562, 264567, 264178R, 264237, 264173, 264179, 425 71, 4253261, 425378R, B29C 4702, B29C 4790

Patent

active

046830944

ABSTRACT:
An improved method for the production of polyolefin film by extruding molten film from an annular die in a tubular form into an extrusion zone is disclosed wherein physical properties are enhanced by controlling polymeric crystalline growth. The method includes providing a liquid quench medium maintained at a constant temperature range in the extrusion zone immediately adjacent the annular die, extruding the molten film directly into the liquid quench medium, and then orienting the quenched film in a tubular bubble whereby the size and amount of crystalline growth is controlled.

REFERENCES:
patent: 2941254 (1960-06-01), Swerlick
patent: 2987776 (1961-06-01), Miller et al.
patent: 3121760 (1964-02-01), Kline
patent: 3193547 (1965-07-01), Schott, Jr.
patent: 3239588 (1966-03-01), Berggren et al.
patent: 3337663 (1967-08-01), Taga
patent: 3340338 (1967-09-01), Meissner
patent: 3388197 (1968-06-01), Samways
patent: 3427375 (1969-02-01), Turner
patent: 3576929 (1971-04-01), Turner et al.
patent: 4003973 (1977-01-01), Kurokawa et al.
"Tubular Water-Bath System Becomes Active Cotender in the Film Sweepstakes", Plastics World, pp. 54-56 (Jan. 1973).
"Liquid Quenching of Blown Film: A Challenge to Air Cooling," Plastics Machinery & Equipment, date unknown.
"Film Profits Improved by Cold Baths," Plastics & Rubber Weekly, pp. 19 and 20 (Nov. 17, 1972).

Affiliated with

Also associated with

Rating

Process for producing oriented polyolefin films with enhanced ph does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing oriented polyolefin films with enhanced ph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing oriented polyolefin films with enhanced ph will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2034022