Printing plates for corrugated board

Details Printing plates for corrugated board Printing plates for corrugated board

1988-12-23

1990-07-24

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428213, 428215, 428217, 4283171, 4283186, 4283193, 4283197, 428908, 428909, 101395, 1014011, B41N 100, B32B 330

Patent

active

049434675

ABSTRACT:
The invention relates to a printing plate for corrugated board which comprises a rubber or plastic foam sheet having a smooth skin layer on its surface, the thickness of the skin layer being 0.3 to 2.0 mm and the surface hardness of the printing plate is SRIS (C) 35 to 55. Preferably, the surface roughness of the skin layer is not more than JIS R.sub.max =100 .mu.m. Preferably, the printing plate further includes a reinforcing sheet comprising a base cloth and a rubber or resin cladding layer disposed on either side thereof and the interface between the foam sheet and one surface of the base cloth of the reinforcing sheet is separably bonded with comparatively weak adhesion.

REFERENCES:
patent: 4234640 (1980-11-01), Wittel
patent: 4303721 (1981-12-01), Rodriguez
patent: 4388363 (1983-06-01), Fountain
patent: 4812357 (1989-03-01), O'Rell et al.

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