Drafting system spinning roller for producing thread
AssigneeDay International, Inc.
InventorWerner P. Lauhus
Life of this patent
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Abstract
The spinning cylinder for drafting systems comprises a cylindrical roll body (1) forming a sliding bearing together with a sliding bearing bush (3) which is slid on and axially fixed. The sliding bearing bush (3) includes a cylindrical socket (4) made of tubular plastic material or plastic compound onto which an elastomeric covering (5) has been extruded.
Claims14
A spinning cylinder for drafting systems for use in the production of threads, said cylinder comprising:
- a cylindrical roll body,
- an axially fixed cylindrical socket disposed on said roll body and forming a sliding bearing therewith, said socket comprising a high temperature resistant polymeric material selected from the group consisting of polytetrafluoroethylene homopolymers, tetrafluoroethylene-perfluoropropylene copolymers, polyetherketones, polyimides, polyphenylene sulfides, and mixtures and blends thereof suitable for dry running conditions, and an extruded elastomeric covering vulcanized directly to said cylindrical socket.
A process for fabricating a spinning cylinder for use in drafting systems in the production of threads comprising:
- providing a cylindrical roll body,
- providing a cylindrical socket comprising a high temperature resistant polymeric material selected from the group consisting of polytetrafluoroethylene homopolymers, tetrafluoroethylene-perfluoropropylene copolymers, polyetherketones, polyimides, polyphenylene sulfides, and mixtures and blends thereof suitable for dry running conditions,
- applying an elastomeric covering directly to said cylindrical socket by extruding said elastomeric covering over said cylindrical socket and joining said elastomeric covering and said cylindrical socket together by vulcanizing said socket and covering, and
- disposing said socket and covering on said roll body in an axially-fixed relationship to form a sliding bearing therewith.
A process for fabricating a spinning cylinder for use in drafting systems in the production of threads comprising:
- providing a cylindrical roll body,
- coextruding together a cylindrical socket and an elastomeric covering thereon, said cylindrical socket comprising a high temperature resistant polymeric material selected from the group consisting of polytetrafluoroethylene homopolymers, tetrafluoroethylene-perfluoropropylene copolymers, polyetherketones, polyimides, polyphenylene sulfides, and mixtures and blends thereof suitable for dry running conditions,
- joining said elastomeric covering and said cylindrical socket together by vulcanizing said socket and covering, and
- disposing said socket and covering on said roll body in an axially-fixed relationship to form a sliding bearing therewith.
Dependencies are inferred from the claim text.