Apparatus for forming a composite tape

Details Apparatus for forming a composite tape Apparatus for forming a composite tape

1975-02-26

1977-10-11

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

425376R, 425461, B29F 310

Patent

active

040532690

ABSTRACT:
Apparatus for forming a composite tape having a foraminous fiberglass core includes the step of treating a continuous strip of foraminous material with adhesion promoting and stiffening material. The treated strip is preheated to a temperature approximately equal to the extruding temperature of two ribbons of flexible vinyl thermoplastic material which are simultaneously formed in a subsequent step and coated under pressure on each side of the heated fiberglass core material through a suitably dimensioned die opening. Application of pressure forces at least portions of the extruded two ribbons into the interstices of the foraminous core material to cause the opposing ribbons to fuse to each other by penetrating and filling the interstices to form a unitary mass and to provide a textured surface or "intaglio" effect which has an appearance which is dimensionally related to the surface finish of the core material.

REFERENCES:
patent: 2077373 (1937-04-01), Formhals
patent: 2760230 (1956-08-01), Van Riper
patent: 2990576 (1961-07-01), Van Riper
patent: 3359357 (1967-12-01), Bentley, Jr.
patent: 3382535 (1968-05-01), Ferrari
patent: 3568640 (1971-03-01), Kuettner

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