Method for manufacturing multilayer molded articles

Details Method for manufacturing multilayer molded articles Method for manufacturing multilayer molded articles

1988-10-14

1990-07-31

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

2643288, 2643289, 26432812, 2643282, 264161, 425130, 425DIG51, B29C 4516, B29C 4530

Patent

active

049449095

ABSTRACT:
A method for manufacturing multilayer molded articles of at least two plastics material components having substantially different properties with respect to behavior, processing and/or temperature changes. The plastics material components are injected from different extruder unit through a common sprue brushing into a mold cavity of a molding tool. The plastics material components are introduced in a predetermined time sequence initially into different cross-sectional areas of a common sprue cone and are subsequently forced into the sprue cone in a converging manner toward a sprue duct of the sprue bushing.

REFERENCES:
patent: 3822107 (1974-07-01), Wogerer
patent: 3947177 (1976-03-01), Eckardt
patent: 3972664 (1976-08-01), Fillmann
patent: 4035466 (1977-07-01), Langecker
patent: 4210616 (1980-07-01), Eckardt et al.
patent: 4670199 (1987-06-01), Montet et al.

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