US2004137226A1PendingUtilityA1

Composite elastomeric yarns

51
Priority: Dec 31, 1996Filed: Dec 23, 2003Published: Jul 15, 2004
Est. expiryDec 31, 2016(expired)· nominal 20-yr term from priority
Inventors:Jeffrey W. Bruner
D02G 3/32D02G 3/328D02G 3/408Y10T428/2929
51
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Claims

Abstract

Disclosed are composite elastomeric yarns comprising a polymeric core, a thermoplastic polymeric sheath disposed about the core and fibers disposed about and mechanically anchored in the sheath. The melting point temperature of the material comprising the sheath is at least about 10° C. and preferably from about 50° C. to about 75° C. lower than the melting point temperature of the material comprising the core. Methods and articles relating to such yarn are also disclosed.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A composite elastomeric yarn comprising: 
 a thermoplastic polymeric core;    a thermoplastic polymeric sheath disposed about the core wherein the melting point temperature of the sheath is at least about 10° C. lower than the melting point temperature of the core; and    fibers mechanically anchored in and disposed about the sheath.    
     
     
         2 . The yarn of  claim 1  wherein the core comprises a monofilament.  
     
     
         3 . The yarn of  claim 1  wherein the core comprises a plurality of filaments.  
     
     
         4 . The yarn of  claim 1  wherein said fibers comprise flaccid textile materials.  
     
     
         5 . The yarn of  claim 1  wherein said fibers comprise non-flaccid fibers.  
     
     
         6 . The yarn of  claim 1  wherein the fibers are selected from the group consisting of cotton, carbon, wool, man-made cellulosics, polyamide, polyester, fluorocarbon polymers, polybenzimidazole, polyolefins, polysulfide, polyacrylonitriles, polymetaphenylene isophthalamide, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, fiberglass, poly(vinyl alcohols) and combinations of two or more of these.  
     
     
         7 . The yarn of  claim 1  wherein the fibers are physically bonded to the sheath by means of heating the sheath to a temperature above the melting point temperature of the sheath but below the melting point temperature of the core.  
     
     
         8 . The yarn of  claim 1  wherein the melting point temperature of the sheath is from about 50° C. to about 75° C. lower than the melting point temperature of the core.  
     
     
         9 . A process of forming a composite elastomeric yarn comprising the steps of: 
 providing a sheath-core component comprising a thermoplastic polymeric core and a thermoplastic polymeric sheath disposed about the core wherein the melting point temperature of the sheath is at least about 10° C. lower than the melting point temperature of the core;    heating the sheath-core component to a temperature to at least soften the sheath but below the melting point temperature of the core;    disposing fibers in intimate mechanical contact about the sheath; and    cooling the composite elastomeric yarn to anchor the fibers in the sheath.    
     
     
         10 . The process of  claim 9  wherein said disposing step preceeds said heating step.  
     
     
         11 . The process of  claim 9  wherein the core comprises a monofilament.  
     
     
         12 . The process of  claim 9  wherein the core comprises a plurality of filaments.  
     
     
         13 . The process of  claim 9  wherein the sheath-core component is stretched from about 10% to about 500% beyond its relaxed length prior to the disposition of fibers about the sheath.  
     
     
         14 . The process of  claim 9  wherein the fibers are selected from the group consisting of cotton, carbon, wool, man-made cellulosics, polyamide, polyester, fluorocarbon polymers, polybenzimidazole, polyolefins, polysulfide, polyacrylonitriles, polymetaphenylene isophthalamide, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, fiberglass, poly(vinyl alcohols) and combinations of two or more of these.  
     
     
         15 . The process of  claim 9  wherein the melting point temperature of the sheath is from about 50° C. to about 75° C. lower than the melting point temperature of the core.  
     
     
         16 . A seat assembly, having a seat frame and a low profile seat suspension stretched across and attached to the frame, the improvement being that said seat suspension comprises a fabric comprising composite elastomeric yarn wherein said composite elastomeric yarn comprises a thermoplastic polymeric core, a thermoplastic polymeric sheath disposed about the core wherein the melting point temperature of the sheath is at least about 10° C. lower than the melting point temperature of the core, and fibers mechanically anchored in and disposed about the sheath.  
     
     
         17 . The seat assembly of  claim 16  wherein the seat assembly is installed in a land, sea or air vehicle.  
     
     
         18 . Commercial indoor furniture comprising the seat assembly of  claim 16 .  
     
     
         19 . Commercial outdoor furniture comprising the seat assembly of  claim 16 .  
     
     
         20 . Residential indoor furniture comprising the seat assembly of  claim 16 .  
     
     
         21 . Residential outdoor furniture comprising the seat assembly of  claim 16.

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