Process and apparatus for processing elastomeric materials in pa

Details Process and apparatus for processing elastomeric materials in pa Process and apparatus for processing elastomeric materials in pa

1989-02-24

1990-10-16

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

By calendering

2641761, 2641771, 26417716, 425194, 425325, 425327, 425374, 4253823, 4253824, 425466, B29C 4732

Patent

active

049633090

ABSTRACT:
The invention relates to a process and apparatus for processing elastomeric material in particular plastic, rubber and a mixture thereof in roller-head-apparatus in which the material to be processed is plasticized and homogenized in an extruder, extruded from an extrusion head provided on the extruder and then is led through an aperture formed between two rollers. It is the object of the present invention, with an especially simple extrusion head in a roller-head-apparatus to produce uniform and dimensionally exact sheets or foils of different thicknesses without changing structural parts. The invention achieves this in that material formed in plate form by parallel outlet surfaces of the extruder head is led through an aperture space formed between a concave cylindrical surface of a stationary forming tool and the circumferential surface of one of the rollers of the calender before the material enters the space between the two calender rollers.

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