Claims
- 1. An apparatus for producing threads and fibers of synthetic materials, in particular of materials including high-melting, non-melting, difficult-to-dissolve and insoluble polymers, comprising:
- a turning mechanism with a carriage and a spindle adapted to receive a cylindrically shaped body of synthetic material for rotation thereof;
- a foil peeling knife secured to the carriage of the turning mechanism so as to peel off a layer of the synthetic material;
- a scratching tool arranged to precede said foil-peeling knife in the rotation direction of said cylindrically shaped body of synthetic material and carrying a plurality of parallel scratching edges which are adapted to scratch the periphery of the cylindrical body of synthetic material so as to form a plurality of parallel grooves in that body; and
- a guiding and transporting section arranged to follow said foil peeling knife and adapted to draw off a curtain of parallel threads peeled off by the foil peeling knife from the parallel grooves in the synthetic material, which guiding and transporting section includes stretching means for stretching the threads in at least one step.
- 2. An apparatus as set forth in claim 1, wherein the turning mechanism is a lathe.
- 3. An apparatus as set forth in claim 1, wherein the scratching edges are arranged at a distance from each other of 0.05 to 2 mm.
- 4. An apparatus as set forth in claim 1, wherein the stretching means is a multiple-step stretching means.
- 5. An apparatus as set forth in claim 1, wherein the scratching tool is a packet of razor blades.
- 6. An apparatus as set forth in claim 1, wherein the scratching tool is a steel band having sawtooth-like scratching edges.
Priority Claims (1)
Number |
Date |
Country |
Kind |
20/75 |
Jan 1975 |
ATX |
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Parent Case Info
This is a division, of application Ser. No. 642,016, filed Dec. 18, 1975, now Pat. No. 4,025,598.
US Referenced Citations (3)
Divisions (1)
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Number |
Date |
Country |
Parent |
642016 |
Dec 1975 |
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