Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1991-07-18
1993-08-10
Lusigan, Michael
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
101126, 427386, 428339, 428413, B32B 300
Patent
active
052347435
ABSTRACT:
The process for making a press plate having a flat press surface includes applying a liquid synthetic epoxy resin plastic material to a support surface of the press plate; allowing the liquid synthetic epoxy resin plastic material to run freely under action of gravity until it is uniformly distributed on the support surface and a layer with a flat and horizontal surface is formed on the liquid synthetic epoxy resin plastic material; providing projecting support walls along edges of the support plate for retaining and preventing loss of the liquid synthetic epoxy resin plastic material; and allowing the liquid synthetic epoxy resin plastic material to harden without vibration for up to seven days. The liquid synthetic epoxy resin plastic material is hardenable so that the press surface formed on the layer has sufficient hardness and the liquid synthetic epoxy resin plastic material is sufficiently elastic to compensate for expansion of the support plate, while retaining a flat smooth press surface. The press plate consists of the support plate and the single hardened layer, which is resistant to temperatures up to 150.degree. C., resistant to attack by solvents and is mechanically workable.
REFERENCES:
patent: 4379039 (1983-04-01), Fujimoto et al.
patent: 4528909 (1985-07-01), Rigg et al.
patent: 4557994 (1985-12-01), Nagano et al.
patent: 4859571 (1989-08-01), Cohen et al.
Lusigan Michael
Striker Michael J.
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