Method for reprocessing scrap from fabric reinforced thermoplast

Details Method for reprocessing scrap from fabric reinforced thermoplast Method for reprocessing scrap from fabric reinforced thermoplast

1976-04-15

1979-06-19

Loew, James B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 174R, 264 37, 264 68, 264174, 264257, 264349, B29B 104, B29C 2900, B02C 1700

Patent

active

041586468

ABSTRACT:
A method for reclaiming scrap produced in the manufacture of fabric reinforced thermoplastic resin sheet material so that the scrap may be worked, banded and calendered or extruded to form a finished product. The reclaiming or reworking of the material is made possible by first tearing the fabric fibers embedded in the thermoplastic resin into discrete finite lengths, mixing the resulting fibers and resin and forming the mixture into a new sheet of thermoplastic resin material suitable for many commercial uses. The tearing of the textile fibers embedded in the scrap into minute lengths is accomplished by applying shearing force to the opposite surfaces of the segments of scrap, in directions parallel to the surfaces. This is accomplished, for example, in a Banbury mixer or in a tight cold mill. The shearing force causes stretching and ultimate rupturing and tearing of the fibers progressively throughout the entire surface area of the scrap segment. The fibers in the resulting mixture are of minute length and are normally not visible in the resulting finished product.

REFERENCES:
patent: 2558378 (1951-06-01), Petry
patent: 3531562 (1970-09-01), Serrano et al.
patent: 3535408 (1970-10-01), Ronden
patent: 3562373 (1971-02-01), Logrippo
patent: 3806562 (1974-04-01), Lamort et al.

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