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Flame retardant polyurethane artificial leather and method for manufacturing the same

  • US 10,640,646 B2
  • Filed: 12/29/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 02/17/2017
  • Status: Active Grant
First Claim
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1. A method for manufacturing flame retardant polyurethane (PU) artificial leather comprising:

  • preparing a microfiber nonwoven fabric material;

    consecutively forming a polyurethane coating layer and an adhesive layer on one surface of a release paper; and

    combining the nonwoven fabric material and the release paper,wherein the preparing step of the microfiber nonwoven fabric material comprises impregnating a nonwoven fabric into a polyurethane resin comprising a first flame retardant; and

    treating the impregnated nonwoven fabric with an alkali solvent to reduce the weight.

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