Temperature control system to independently maintain separate molten polymer streams at selected temperatures during fiber extrusion
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D01D-001/06
D01D-001/00
D01D-004/02
D01D-004/00
출원번호
US-0676271
(2003-10-02)
등록번호
US-7252493
(2007-08-07)
발명자
/ 주소
Johnston,Brian
Haggard,Jeff
Wilkie,Arnold
Chern,Ruey
Miller,Mark
Owen,Tony
Quinlivan,John
Mire,Ted
Soucier,Brent
Moschetti,Kevin
출원인 / 주소
Hills, Inc.
대리인 / 주소
Edell, Shapiro & Finnan, LLC
인용정보
피인용 횟수 :
1인용 특허 :
11
초록▼
A temperature control system for use in a fiber extrusion process includes a number of metering pump assemblies including inlets to receive at least two molten polymer streams from a supply source that is connectable to the system. A pump block disposed proximate the metering pump assemblies include
A temperature control system for use in a fiber extrusion process includes a number of metering pump assemblies including inlets to receive at least two molten polymer streams from a supply source that is connectable to the system. A pump block disposed proximate the metering pump assemblies includes a plurality of flow paths extending within the pump block, where the flow paths are aligned to receive molten polymer flowing from outlets of the metering pump assemblies and to deliver the molten polymer to a spinneret. The flow paths are arranged in flow path sets within the pump block, and each flow path set includes at least one flow path and is spaced a selected distance from the other flow path sets within the pump block so as to facilitate independent control of the temperature of a molten polymer flowing through each flow path set.
대표청구항▼
What is claimed is: 1. A temperature control system for use in a fiber extrusion process comprising: a plurality of metering pump assemblies to receive a plurality of molten polymer streams from at least one polymer supply source that is connectable to the system, each metering pump assembly includ
What is claimed is: 1. A temperature control system for use in a fiber extrusion process comprising: a plurality of metering pump assemblies to receive a plurality of molten polymer streams from at least one polymer supply source that is connectable to the system, each metering pump assembly including a pump chamber and a pump disposed within the pump chamber, wherein the pump of each metering pump assembly includes an inlet to receive a molten polymer stream from the at least one polymer supply source and a plurality of outlets to direct molten polymer from each metering pump; and a plurality of flow path sets disposed downstream from the metering pump assemblies, each flow path set being aligned with a respective metering pump and including a plurality of flow paths configured to receive molten polymer from the plurality of outlets of the respective metering pump and to deliver the molten polymer to a spinneret; wherein each flow path set is spaced a selected distance from the other flow path sets so as to facilitate independent control of the temperature of a molten polymer flowing through each flow path set. 2. The system of claim 1, further comprising: insulation material disposed between the flow path sets to selectively control heat transfer between molten polymers flowing through different flow path sets. 3. The system of claim 1, wherein at least one flow path set includes a thermal treatment unit to independently maintain molten polymer flowing through the at least one flow path set within a selected temperature range. 4. The system of claim 1, wherein at least one flow path set includes at least one sensor to measure at least one of the temperature and the pressure of molten polymer flowing through the flow path set. 5. The system of claim 1, wherein the flow paths comprise conduits disposed within a chamber. 6. The system of claim 5, wherein the chamber includes insulation material surrounding the conduits. 7. The system of claim 6, wherein the insulation material comprises glass beads. 8. The system of claim 5, wherein the chamber is partitioned into a plurality of sub-chambers, and the flow path sets are disposed in separate sub-chambers. 9. The system of claim 8, wherein each sub-chamber includes a heat treatment unit to independently maintain molten polymer flowing through each sub-chamber within a selected temperature range. 10. The system of claim 9, wherein the heat treatment unit for at least one sub-chamber comprises an inlet and an outlet to the sub-chamber, and the inlet is securable to a thermal supply source to facilitate delivery of a temperature-controlled thermal fluid into and out of the sub-chamber. 11. The system of claim 5, wherein the chamber is defined between a top plate disposed adjacent the metering pump assemblies, and a bottom plate opposing the top plate, and the top plate further includes grooved sections disposed at selected locations between metering pump assemblies. 12. The system of claim 1, wherein the flow paths comprise channels extending through portions of a solid pump block. 13. The system of claim 12, wherein the pump block is partitioned into a plurality of sub-sections via at least one insulation material, and the flow path sets are disposed in separate sub-chambers. 14. The system of claim 1, further comprising: a spin pack including the spinneret, wherein the spin pack is aligned to receive molten polymer from the flow paths; and a spin beam disposed adjacent the spin pack, the spin beam including a thermal treatment unit to heat the spin beam and at least first portions of the spin pack to a selected temperature range. 15. The system of claim 14, further comprising an insulation material disposed between flow path sets to partition flow path sets into a plurality of sub-sections, wherein each sub-section includes at least one flow path set. 16. The system of claim 15, wherein the spin pack is partitioned into sub-sections via the insulation material. 17. A spunbond fiber extrusion system including the temperature control system of claim 14. 18. The system of claim 1, wherein at least one pump includes a heating element to independently maintain the pump within a selected temperature range. 19. The system of claim 1, wherein at least one pump chamber includes a supply conduit securable to a thermal fluid supply source to direct thermal fluid toward the pump within the pump chamber in order to independently maintain the pump within a selected temperature range. 20. A temperature control system for use in a fiber extrusion process comprising: a spin pack including a spinneret to extrude fibers from molten polymer; a spin beam oriented adjacent the spin pack and including a means to heat the spin beam and at least a portion of the spin pack to a selected temperature range; a means for independently pumping a plurality of molten polymer streams from at least one polymer supply source to the spinneret, wherein the means for independently pumping comprises a plurality of pump chambers, each pump chamber including a pump disposed within the pump chamber, wherein each pump includes a plurality of outlets; a plurality of flow path sets, each flow path set being connected with a respective pump and including a plurality of flow paths that connect with the plurality of outlets of the respective pump so as to deliver molten polymer from the respective pump to the spinneret; and a means for independently controlling the temperature of each molten polymer stream flowing within the means for independently pumping within a selected temperature range prior to delivery to the spinneret. 21. The temperature control system of claim 20, wherein the means for independently controlling the temperature of each molten polymer stream further controls heat transfer between molten polymer streams and the spin beam such that the temperature of each molten polymer stream within the system increases by no more than about 50% of the difference between the spin beam temperature and an inlet temperature of the molten polymer stream.
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이 특허에 인용된 특허 (11)
Barbier Detlef,DEX ; Locher Engelbert,DEX ; Goffing Norbert,DEX ; Baravian Jean,FRX ; Pfortner Peter ; Riboulet Georges,FRX ; Williams Milton, Device for producing spunbonded nonwovens.
Keilert Jrgen (Kleinwallstadt DEX) Nogossek Alfred (Wrzburg DEX) Zang Harald (Kleinostheim DEX), Process and device for drawing off and blocking off a melt.
Moderlak Helmut (Maintal DEX) Koschinek Gnter (Dietzenbach DEX) Zinsser Rolf (Heusenstamm DEX) Prehler Richard (Frankfurt am Main DEX) Kretschmann Bernd (Kahl DEX), Spinning manifold with serial nozzle blocks.
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