Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1976-06-10
1978-06-13
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264294, 264323, 264325, B29F 106
Patent
active
040949524
ABSTRACT:
A process of molding polymeric material comprising causing heated polymeric material to flow in a predetermined direction in a mold and cooling the polymeric material forming a product exhibiting anisotropic properties including greater stiffness in the direction of flow than in any other direction. Also molding apparatus comprising two mold parts each having a mold cavity, the molding apparatus being so constructed and arranged that communication between the two mold cavities may be established and disestablished at will, means for admitting material to be molded into one of the mold cavities and by pressure differential causing flow of some of the material from said mold cavity into the other mold cavity when communication between the mold cavities is established, and means for cooling the flowing material whereby a product exhibiting anisotropic properties including greater stiffness in the direction of flow than in any other direction may be formed.
REFERENCES:
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patent: 3288898 (1966-11-01), West
patent: 3356242 (1967-12-01), Cleereman
patent: 3373238 (1968-03-01), Powers
patent: 3430797 (1969-03-01), Goins
patent: 3483288 (1969-12-01), Paulson
patent: 3492387 (1970-01-01), Larson
patent: 3739052 (1973-06-01), Ayres
patent: 3750450 (1973-08-01), Sharp
patent: 4005164 (1977-01-01), Proctor
Alan I. W. Frank Corporation
Kucia Richard R.
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