Calender for webs of paper

Details Calender for webs of paper Calender for webs of paper

1996-02-14

1997-08-12

Gerrity, Stephen F.

Presses

With additional treatment of material

Heating, cooling, or drying

100155R, 100162B, 492 7, 492 20, 492 46, 492 56, B30B 304, B30B 1534, F16C 1300

Patent

active

056554443

ABSTRACT:
A calender for webs of paper includes a hard roller having a smooth outer surface. A soft roller is disposed adjacent to the hard roller and forms a roll gap therebetween. The soft roller has a coating made of flexible plastic. The coating includes an inner layer and an outer layer. The inner layer is made of a first plastic material and the outer layer is made of a second plastic material. The outer layer has lesser flexibility and greater hardness than the inner layer. The outer layer has an outer surface having wear properties such that under normal operating conditions the average roughness R.sub.a does not exceed 0.5 .mu.m.

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patent: 5123340 (1992-06-01), Kiema et al.
patent: 5227853 (1993-07-01), Proulx et al.
patent: 5318670 (1994-06-01), Link et al.
patent: 5393290 (1995-02-01), Lehmann et al.

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