METHOD AND APPARATUS FOR THE TRANSFER OF A WET-LAID NONWOVEN TEXTILE WEB FROM A PERFORATED CONVEYOR SURFACE TO A SEIVE DRUM SURFACE

  • US 3,839,146 A
  • Filed: 10/07/1970
  • Issued: 10/01/1974
  • Est. Priority Date: 10/10/1969
  • Status: Expired due to Term
First Claim
Patent Images

1. A METHOD FOR THE WET-LAY PRODUCTION OF NONWOVEN TEXTILE MATERIALS WHICH COMPRISES UNITING TEXTILE FIBERS INTO A WET WEB ON A WET WEB LAYING UNIT, SAID WEB HAVING A MOISTURE CONTENT OF UP TO ABOUT 300%, CONVEYING SAID WET WEB FROM SAID WEB LAYING UNIT ON AN ENDLESS PERFORATED CONVEYOR MEANS TRANSFERRING THE WET WEB FROM SAID PERFORATED CONVEYOR MEANS TO A SIEVE DRUM DRYING CONTAINING AT LEAST ONE SIEVE DRUM MEANS HAVING A CONVEYING SURFACE SUBJECTED TO A SUCTION DRAFT, SAID WET WEB BEING TRANSFERRED TO THE CONVEYING SURFACE OF A FIRST SIEVE DRUM MEANS DUE TO THE SUCTION DRAFT APPLIED TO SAID SIEVE DRUM MEANS IN SAID DRIER BY POSITIONING ONE END OF THE CONVEYOR MEANS CLOSELY ADJACENT AND TANGENT TO THE CONVEYING SURFACE OF SAID FIRST SIEVE DRUM MEANS AND BY REVERSING THE DIRECTION OF TROVEL OF THE CONVEYOR MEANS ON WHICH SAID WEB IS BEING CONVEYED IMMEDIATELY IN FRONT OF THE CONVEYING SURFACE OF SAID FIRST SIEVE DRUM MEANS, AND DRYING THE WET WEB IN SAID SIEVE DRUM DRYER TO THE DESIRED MOISTURE CONTENT BY CONVEYING SAID WET WEB ON THE CONVEYING SURFACE OF SAID SIEVE DRUM MEANS AND BY DRAWING A HEATED GASEOUS TREATMENT MEDIUM THROUGH THE WEB AND THROUGH SAID CONVEYING SURFACE BY SAID SUCTION DRAFT.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×