Blown film extrusion

Details Blown film extrusion Blown film extrusion

1992-06-15

1993-11-02

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264569, 26421121, 425 721, 4253261, B29C 4790

Patent

active

052581616

ABSTRACT:
A method for producing film having high tensile impact and dart drop properties by introducing a very low density ethylene alpha olefin copolymer having a melt index of less than 0.1 gm/10 min. a melt flow ratio of about 14-18 and a dispersity greater than 10 into a stalk extrusion apparatus and thereafter forming a film from said resin.

REFERENCES:
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patent: 4606879 (1986-08-01), Cerisano
patent: 4632801 (1986-12-01), Dowd
patent: 4818467 (1989-04-01), Audureau et al.
patent: 4820471 (1989-04-01), van der Molen
patent: 4832897 (1989-05-01), van der Molen
patent: 4842803 (1989-06-01), Bose et al.
patent: 4938903 (1990-07-01), Schaeffer et al.
patent: 4976898 (1990-12-01), Lustig et al.
patent: 4988465 (1991-01-01), Lustig et al.

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