Wet-laying process for making liquid sealing gasket sheet materi

Details Wet-laying process for making liquid sealing gasket sheet materi Wet-laying process for making liquid sealing gasket sheet materi

1992-07-22

1995-08-01

Raimund, Christopher W.

Paper making and fiber liberation

Processes and products

Plural fiber containing

162146, 162156, 1621572, 1621641, 1621818, 162183, D21F 1100

Patent

active

054377676

ABSTRACT:
A wet laying process for making fluid-sealing gasket sheet materials is described. The gasket materials seal particularly well against polar liquids. These gasketing sheets have from about 5 to about 20% fiber, and at least about 62% filler, and a reduced binder concentration, containing about 18% by weight of binder or less, allowing the binder to be reduced even to zero. The sheet must include at least about 3% by total dry weight of a gel-forming mineral filler. In addition to giving from good to very excellent seals against polar liquids, this gasketing also has good torque retention and creep resistance.

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