Orientation of short fibers in a continuous process

Details Orientation of short fibers in a continuous process Orientation of short fibers in a continuous process

2005-05-31

2005-05-31

Maki, Steven D. (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C152S209400, C152S458000, C156S244240, C264S108000, C264S211120, C264S328120

Reexamination Certificate

active

06899782

ABSTRACT:
A method and apparatus for continuously processing fiber into an elastomeric component uses an expanding die (11, 11a) for orienting fibers in other than the processing direction of the extrusion. In one embodiment, an injection mold (50) is used with the expanding die (11), and in another embodiment, an extruder (30) is used with expanding die (11a). Processing parameters may be alteredto control the direction of orientation of fibers (20) in the elastomer component. Orientation of fibers (20) in an extrudate (17) is dependent on the processing speed viscosity of the elastomer, pressure of extrusion, the length l1and l2and height h1and h2of gate (12) and expansion cavity (14), respectively, of the expansion die (11, 11a).

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Patent Abstracts of Japan, vol 014, no 093 (M-0939), Feb. 21, 1990 & JP 01 304924 A (Bando Chem Ind Ltd), Dec. 8, 1989 cited in the abstract.

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