Method for preparing oriented discontinuous long fiber reinforce

Details Method for preparing oriented discontinuous long fiber reinforce Method for preparing oriented discontinuous long fiber reinforce

1996-05-07

1998-04-21

Crispino, Richard

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156276, 264109, B32B 3116

Patent

active

057413827

ABSTRACT:
A method for preparing a thermoplastic resin composite sheet product reinforced by oriented and discontinuous long fibers comprises a first step in which a plurality of prepreg pieces of a fiber-reinforced thermoplastic resin composite are fed to a horizontal sieve plate in vibration. The prepreg pieces are then caused by the vibration of the sieve plate to fall through the parallel ditches of the sieve plate on a mold plate or thermoplastic resin sheet product located under the sieve plate. The prepreg pieces deposited on the mold plate or thermoplastic resin sheet product are subsequently subjected to heating and pressing such that a thermoplastic resin composite sheet product reinforced by the oriented discontinuous long fibers is formed.

REFERENCES:
patent: 1716758 (1929-06-01), Bland
patent: 2678081 (1954-05-01), Rainard et al.
patent: 3202743 (1965-08-01), Elmendorf
patent: 3508301 (1970-04-01), Brown
patent: 5093050 (1992-03-01), Tepic
patent: 5288348 (1994-02-01), Modrak
L. Kacir and O. Ishai, "Oriented Short Glass-Fiber Composites. I. Preparation and Statistical Analysis of Aligned Fiber Mats," Polymer Engineering and Science, Jul., 1975, vol. 15, No. 17, pp. 526-531.

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