Plastic granulate containing non-dispersed reinforcing fibre bun

Details Plastic granulate containing non-dispersed reinforcing fibre bun Plastic granulate containing non-dispersed reinforcing fibre bun

1991-01-31

1993-08-17

Thibodeau, Paul J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428288, 428292, 428303, 4283115, 428339, 428364, B32B 516

Patent

active

052367819

ABSTRACT:
The present invention relates to a granulated thermoplastic polymer composition comprising granules incorporating 0.1-50% (vol) fiber bundles. The fiber bundles have a three dimensional orientation in each of the granules, and each fiber bundle contains at least 100 fibers. The present invention also relates to a process for producing a granulated thermoplastic polymer composition containing non-dispersed fiber bundles comprising the steps of mixing a thermoplastic polymer with fiber bundles at a sheer stress low enough to prevent the fiber bundles from falling apart, and the forming granules. A temperature of a dosage point where the fiber bundles are added to the thermoplastic polymer is below a processing temperature of the thermoplastic polymer. Each granule comprises 0.1 to 50% (vol) of the fiber bundles. The fiber bundles have a three dimensional orientation in each granule, and each fiber bundle contains at least 100 fibers.

REFERENCES:
patent: 3684645 (1969-03-01), Temple et al.
patent: 4037011 (1977-07-01), Hattori et al.
patent: 4250221 (1981-02-01), Pfeffer
patent: 4431696 (1984-02-01), Di Drusco et al.
patent: 4559262 (1985-12-01), Cogswell et al.
patent: 4944965 (1990-07-01), Luxon et al.
patent: 5019450 (1991-05-01), Cogswell et al.

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