Felt-like products

• US 2,910,763 A
• Filed: 08/17/1955
• Issued: 11/03/1959
• Est. Priority Date: 08/17/1955
• Status: Expired due to Term

• Current Assignee: Herbert G. Lauterbach
• Original Assignee: Herbert G. Lauterbach
• Inventors: Lauterbach, Herbert G.
• Application Number:
  US03/528,960
• Time in Patent Office: 1,539 Days
• US Class Current: 442/405
• CPC Class Codes: D04H 1/06 by treatment to produce shrinking, swelling, crimping or curling of fibres
• CPC Class Codes: D04H 1/4258 Regenerated cellulose series
• CPC Class Codes: D04H 1/43 Acrylonitrile series
• CPC Class Codes: D04H 1/4334 Polyamides
• CPC Class Codes: D04H 1/435 Polyesters
• CPC Class Codes: D04H 1/46 by needling or like operations to cause entanglement of fibres D04H1/45 takes precedence; needling machines D04H18/00
• CPC Class Codes: D04H 1/482 in combination with shrinkage
• CPC Class Codes: D04H 1/498 entanglement of layered webs
• CPC Class Codes: D04H 1/74 the fibres being orientated, e.g. in parallel (anisotropic fleeces)
• CPC Class Codes: D04H 3/011 Polyesters
• CPC Class Codes: D04H 3/013 Regenerated cellulose series
• CPC Class Codes: D04H 3/105 by needling needling machines D04H18/00
• CPC Class Codes: D21F 7/083 Multi-layer felts
• CPC Class Codes: Y10S 128/14 Polytetrafluoroethylene, i.e. PTFE
• CPC Class Codes: Y10S 128/18 Heat shrinkable film
• CPC Class Codes: Y10S 55/05 Methods of making filter
• CPC Class Codes: Y10S 8/10 Polyvinyl halide esters or alcohol fiber modification
• CPC Class Codes: Y10T 156/1075 of plural laminae from single stock and assembling to each other or to additional lamina
• CPC Class Codes: Y10T 428/2904 Staple length fiber
• CPC Class Codes: Y10T 442/51 From natural organic fiber [e.g., wool, etc.]
• CPC Class Codes: Y10T 442/56 : From synthetic organic fiber
• CPC Class Codes: Y10T 442/686 : Containing polymeric and natural strand or fiber materials

Claims

1. A FELT-LIKE ARTICULE CONSISTING ESSENTIALLY OF FILAMENTARY MATERIAL CHARACTERIZED BY PREDOMINANTLY HORIZONTAL COPLANAR SUPERIMPOSED LAYERS OF THE FILAMENTARY COMPOUNDS INTERRUPTED BY OCCASIONAL INTERLAYERED ORIENTATION AT LEAST 50% OF THE FILMENTARY COMPONENT MATERIAL IN EACH LAYER BEING SYNTHETIC STAPLE FIBERS CHARACTERIZED BY A CAPACITY FOR RETREATING SUBSEQUENTLY TO