Method of compounding resin and fiber

Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...

Reexamination Certificate

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C264S171130, C427S434600

Reexamination Certificate

active

06875385

ABSTRACT:
Molding material consisting of resin coated reinforcing fiber strands in a molten mass of resin is prepared at a molding site for controlled supply to a molding machine. Continuous strands of fiber from supply spools are entrained with pressurized, molten resin flowing through a coating device and coated with the resin. The movement of the fiber and resin through the coating die may be controlled so as to accurately and predictably produce any desired quantity the molding material, i.e. the coating apparatus may be operated in a discontinuous manner to provide any predetermined quantity of molding material to a receiving device. The receiving device may be the feed screw for an injection molding machine or simply a plate movable to and from a compression molding machine. The fiber strands may be cut into predetermined lengths by a cutting device positioned downstream of the aforesaid coating device.

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Plastics Technology, Jan. 2001, “Keeping-Up with Injection Molding”.

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