Drawing bath
AssigneeRieter Machine Works, Ltd.
InventorFelix Graf
Life of this patent
Estimating the term…
Abstract
A method for drawing a synthetic thread having a fibril bundle delivers the thread as a ribbon of substantially parallel fibrils through a drawing bath to effect a hydrodynamic braking of the filaments and simultaneous drawing of the filaments. A ceramic pin is used to form the fibrils into parallel relation and substantially in one plane. A second ceramic pin may also be used as a mechanical brake to add to the hydrodynamic braking action by the liquid in the drawing bath. The base and cover of the drawing device are provided with channels to define the flow path for the bath liquid as well as inlet and outlet channels for the liquid. Suction nozzles or air nozzles may be provided at the inlet and outlet ends of the flow paths to remove excess liquid from the fibrils.
Claims24
In a process for drawing synthetic filaments, the steps of
- providing a drawing bath;
- and
- guiding a plurality of synthetic filaments in a parallel manner and in a narrow ribbon shaped pattern into the drawing bath and effectively hydrodynamically braking said filaments while simultaneously drawing said filaments.
A device for drawing synthetic filaments comprising
- a base;
- a cover mounted on said base for movement between an open position and a closed position, at least one of said base and said cover has a channel to define a flow path for a drawing bath in said closed position;
- means at one end of said flow path for guiding a plurality of synthetic filaments in a parallel manner and in a narrow ribbon shaped pattern into said channel for passage therethrough;
- and
- means for passing a bath liquid into said flow path for drawing of the filaments passing therethrough.
A device for drawing synthetic filaments comprising
- means defining a flow path for a drawing bath;
- means for guiding a plurality of synthetic filaments in a parallel manner and in a narrow ribbon shaped pattern into said flow path;
- and
- means for passing a bath liquid into said flow path constituting means for hydrodynamically braking of the filaments and for simultaneously drawing of the filaments passing therethrough.
Dependencies are inferred from the claim text.