Apparatus and method for cooling an extruded blown film

Details Apparatus and method for cooling an extruded blown film Apparatus and method for cooling an extruded blown film

1992-03-10

1993-05-25

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264 28, 264 403, 264 406, 264564, 425 721, 425140, 425143, 4253261, 4253781, B29C 4788

Patent

active

052137252

ABSTRACT:
Apparatus and method for cooling an extruded blown film in which the interior surface of the thin film bubble is contacted with a gas which does not contain water vapor to thereby cool the extruded film. The apparatus and method may employ an enclosed circulation system to provide for the reuse of the gas through cooling with a liquid coolant such as liquid cryogen.

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