Bottles and jars – Multilayer barrier structure – Coating or lamination
Patent
1980-10-06
1982-02-16
Morgenstern, Norman
Bottles and jars
Multilayer barrier structure
Coating or lamination
156 85, 156 86, 215DIG6, 427287, 427386, 4273897, 427401, A61J 900, A65D 2308
Patent
active
043155731
ABSTRACT:
This invention relates to a method of strengthening glass articles and, more specifically, hollow glass containers such as jars for containing foodstuffs. The invention is directed to a method wherein the hollow glass container is surrounded at its heel and bearing surfaces with a thin continuous frangible coating of a polymeric resin such as an epoxy resin. The resin is cured into a frangible thermoset condition to resist thermal shock breakage; however, any breakage of the container at its coated area will result in disruption of the surrounding coating evidencing such breakage. The coating is extremely thin and continuous, and readily applied, and may be used in combination with a foamed thermoplastic tubular sleeve snugly conforming to the body portion of the container. The conforming sleeve serves as a label and to provide an insulating jacket for handling the container when its contents are heated, such as in a microwave oven. The thin coating serves to increase the thermal shock strength of the container and to prevent its thermal shock breakage, but to evidence same when and if such event should occur.
REFERENCES:
patent: 3912100 (1975-10-01), Graham
patent: 4048281 (1977-09-01), Brummett et al.
patent: 4056208 (1977-11-01), Prejean
patent: 4115599 (1978-09-01), Taylor
patent: 4248030 (1981-02-01), Heckman
Bradley Ronald W.
Carl David G.
Keating Bernard L.
Bell Janyce A.
Click Myron E.
Holler Edward J.
Morgenstern Norman
Owens--Illinois, Inc.
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