×

Apparatus for producing sheet material

  • US 4,164,387 A
  • Filed: 06/19/1978
  • Issued: 08/14/1979
  • Est. Priority Date: 06/30/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. In a twin-belt press wherein two endless belts are mounted to provide parallel belt runs which present coextensive belt surfaces between which there is a press-gap which comprises a treatment zone within which the material is compressed by opposing forces exerted on the material by said belt surfaces, and wherein it is desirable to control the dimension of said press-gap transversely of said coextensive belt surfaces, that improvement which comprises means to control said dimension of said press-gap including, pressure means positioned upon the opposite sides of said belt runs to exert said opposing forces urging said coextensive surfaces toward each other with a predetermined spaced relationship therebetween, thermal responsive means which changes in its dimension in the direction of said forces in response to changes in it temperature, and means to control said temperature whereby increases and decreases in said temperature vary said dimension of said press-gap.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×