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US 6,416,211 B1Granted
Method and apparatus for molding plastic
AssigneeConenor Oy
InventorsKari Kirjavainen, Jyri Järvenkylä
Life of this patent
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Abstract
An apparatus for molding plastic including: (a) an injection space; (b) forming apparatus for supplying plastic material to the injection space, the forming apparatus having at least an inner conical stator and an outer conical stator and at least one rotatable rotor disposed outside of the inner conical stator; and (c) a piston for compressing the plastic material supplied to the injection space into a mold to form the plastic material into a shape determined by the mold.
Claims24
An apparatus for molding plastic comprising:
- (a) an injection space;
- (b) supplying means for supplying plastic material to the injection space, said supplying means comprising at least an inner conical stator and an outer conical stator and at least one rotatable rotor disposed outside of the inner conical stator;
- and
- (c) compressing means for compressing the plastic material supplied to the injection space into a mold to form the plastic material into a shape determined by the mold.
1 more element
A molded plastic product formed by:
- (a) imparting a helical orientation to at least a first plastic material by feeding the first plastic material between a conical stator and a rotating conical rotor disposed outside of the conical stator so that the rotor imparts the helical orientation to the first plastic material and the oriented first plastic material is supplied to a substantially tubular injection space, said helical orientation being maintained in the substantially tubular injection space;
- and
- (b) pressing the material from the injection space into a mold to form the molded plastic product while maintaining said helical orientation.
Dependencies are inferred from the claim text.