Apparatus for the production of foamed polyolefin sheets

Details Apparatus for the production of foamed polyolefin sheets Apparatus for the production of foamed polyolefin sheets

1992-10-07

1994-01-25

Simmons, David A.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

264 51, 264 55, 2642107, 264565, 425296, 4253261, B29D 2300

Patent

active

052811190

ABSTRACT:
An apparatus for the formation of a foamed polyolefin sheet provided with a cylindrical cooling device for cooling a foamed extruded tubular body at one end of an extruder, air outlets for increasing the internal pressure of the cooled foamed tubular body at a region between the extruder die and the upstream section of a cylindrical cooling device and between at least two adjacent sections of a cylindrical cooling device and a cutting blade for slitting the foamed tubular body enables the production of foamed polyolefin sheets with improved surface characteristics and strength.

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