Coating processes – With pretreatment of the base
Patent
1991-01-07
1994-10-11
Lusignan, Michael
Coating processes
With pretreatment of the base
72187, 72197, 72198, 427322, 427327, 451 55, 451 59, B05D 300, B05D 312
Patent
active
053545818
ABSTRACT:
One side of a sheet- or plate-like bank of metallic, plastic and/or other material is provided with at least one set of parallel grooves prior to being provided with an array of pyramidal and/or conical depressions. The grooves can be formed by brushes or by grinding, and the depressions can be formed by a rotary debossing tool having a peripheral surface provided with crossing transversely extending rows and circumferentially extending columns of protuberances. The treatment enhances the ability of the one side of the thus obtained sheet- or plate-like body to accept and retain a layer of lacquer, to be provided with an adherent layer of oxide or to accept a layer of adhesive prior to being bonded to a similarly treated or to an untreated second plate- or sheet-like body. The depth of the depressions can match or approximate the average depth of the grooves. The grooves can form two sets of parallel grooves, and the grooves of one set can cross the grooves of each other set at an angle of 90.+-.45.
REFERENCES:
patent: 2335196 (1940-09-01), Pecsok
patent: 2831521 (1958-04-01), Collins
patent: 2907151 (1959-10-01), Peterson
patent: 3082517 (1963-03-01), Holowaty
patent: 4092842 (1978-06-01), Oser et al.
patent: 4338807 (1982-07-01), Ricono et al.
patent: 4747991 (1988-05-01), Bishop
patent: 4909894 (1990-03-01), Uesugi et al.
HJL Projects & Developments Ltd.
Lusignan Michael
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