Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1982-07-01
1985-01-15
McCamish, Marion E.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428367, 428375, 428379, 428217, 138109, B32B 702, B32B 1500, D03D 4906
Patent
active
044938640
ABSTRACT:
Protectively coated flanged pipe comprising a pipe with a relatively low durometer surface coating in the pipe section and a relatively higher durometer coating, free of the tendency to creep or cold flow over a period of time, on the flange section surfaces. Preferably, this product is made by a process, wherein the pipe is first surface roughened throughout and then selectively primed in the pipe section only, leaving the flange section surface non-receptive to a subsequent primer, which upon setting of the primer, readies the pipe for dip coating in the lower durometer resin protective coating. The dip coating, upon fusion, is then easily stripped from the flange section surface, due to the non-retention there in the unprimed areas, and the flange section surface is subsequently coated, preferably by spraying, with a higher durometer coating which effects protection of the flange joint without the tendency to creep over a period of time.
REFERENCES:
patent: 4188765 (1980-02-01), Jackson
patent: 4383555 (1983-05-01), Finley
Arbonite Corporation
Johnson Beverly K.
McCamish Marion E.
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