Thixotropic coating for inner wall of food can

The inner wall of a metal container is coated with a thixotropic coating applied as a thin layer over defective surfaces on the inner wall. The thixotropic material is a vinyl, e.g. PVC, organosol with ketone solvents which swell the PVC, or silica of surface area 200 sq.m/g. The thixotropic agent i...

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Bibliographische Detailangaben
1. Verfasser:	RENTMEESTER KENNETH RICHARD
Format:	Patent
Sprache:	eng ; ita
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	The inner wall of a metal container is coated with a thixotropic coating applied as a thin layer over defective surfaces on the inner wall. The thixotropic material is a vinyl, e.g. PVC, organosol with ketone solvents which swell the PVC, or silica of surface area 200 sq.m/g. The thixotropic agent is used at 5-20 wt.% of the coating. The coating is applied at 5 mg/sq. inch, e.g. as a side seam stripe. Coating metal food cans having a side seam e.g. a welded lap joint, which has an internal metal edge. The coating adheres as a gel to the interior surfaces and remains as a gel at a curing temp. of over 250 deg.F. The can is protected from corrosion and the food from contamination.