Wrinkled band without air expansion tube and its manufacturing method

CAFC
  • US 7,618,509 B2
  • Filed: 03/13/2004
  • Issued: 11/17/2009
  • Est. Priority Date: 11/18/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method of manufacturing a wrinkled band, wherein the outer peripheral rim of an overlapped adhesion sheet is adhered and simultaneously an adhesion line having an air passage is formed with certain regularity in the inner side face thereof, another adhesion line forms a respective vent hole and secures an inner space in-between, and above and below the secured inner space a connection adhesion band 5 with an elastic band 6 connected thereto is adhered by an outer peripheral line, with the elastic band being stretched.

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