Air-permeable transport belt for transporting a fiber strand to be condensed and method of making same
AssigneesFritz Stahlecker, Hans Stahlecker
InventorPeter Blankenhorn
Life of this patent
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Abstract
In order to transport a fiber strand to be pneumatically condensed over a suction slit of a condensing zone of a spinning machine, a transport belt is provided which comprises, at least in the effective area of the suction slit, a porous area. The porous area can, for example, be created by dissolving granulate components from a fine-grained granulate blend.
Claims24
An air-permeable smooth transport belt for use in combination with a suction slit of a condensing zone of a spinning machine for transporting a fiber strand over the suction slit, wherein the transport belt comprises a porous area at least in an effective area of the suction slit, and wherein the porous area is made from a fine-grained synthetic granulate.
A method of making an air-permeable smooth transport belt for transporting a fiber strand over a suction slit of a condensing zone of a spinning machine, wherein the transport belt comprises a porous area at least in an effective area of the suction slit,
- said method comprising:
- forming a base belt of plastic material, and
- treating a section of the base belt to form the porous area, wherein said treating includes forming said porous area as a granulate and sintering the porous area with the granulate pressed under pressure into a mold at a temperature just below melting temperature of the granulate.
A method of making an air-permeable smooth transport belt for transporting a fiber strand over a suction slit of a condensing zone of a spinning machine, wherein the transport belt comprises a porous area at least in an effective area of the suction slit,
- said method comprising:
- forming a base belt of plastic material, and
- treating a section of the base belt to form the porous area,
- wherein said belt is formed with multiple granulates, and
- wherein said treating includes sintering the granulates together and subsequently dissolving one of said granulates with a solvent.
A method of making an air-permeable smooth transport belt for transporting a fiber strand over a suction slit of a condensing zone of a spinning machine, wherein the transport belt comprises a porous area at least in an effective area of the suction slit,
- said method comprising:
- forming a base belt of plastic material, and
- treating a section of the base belt to form the porous area, wherein said belt is formed with two granulates which fix together with have respective different melting temperatures,
- wherein said granulates are injected into a mold at a temperature in an immediate respect melting temperatures, and
- wherein the granulate with a higher melting temperature is subsequently chemically dissolved.
Dependencies are inferred from the claim text.