Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2004-08-04
2009-11-03
Hug, Eric (Department: 1791)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
C162S358300, C162S901000, C100S153000, C492S020000
Reexamination Certificate
active
07611608
ABSTRACT:
A press belt having superior cracking resistance, wear resistance and pressure deflection resistance and an excellent traveling property and a method of manufacturing the same as well as a shoe press employing the same are provided. A press belt in a press comprising a rotatively traveling endless press belt and pressing means, including terminal corresponding areas (B, B′) corresponding to both ends of the pressing means in the cross direction and a central area (A) located between the terminal corresponding areas and mainly composed of thermosetting polyurethane obtained from a thermosetting polyurethane material containing a phenylene isocyanate derivative having an isocyanate group (NCO) on an end and a hardener having an active hydrogen group (H) on an end with the equivalent ratio (H/NCO) between the active hydrogen group and the isocyanate group set relatively high on the terminal corresponding areas and relatively low on the central area and a method of manufacturing the same.
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Birch & Stewart Kolasch & Birch, LLP
Hug Eric
Yamauchi Corporation
LandOfFree
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