Synthetic resin sheet having notching strip and container
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 8, 1989
Grant Date -
N/A
app pub date -
Apr 7, 1987
filing date -
Apr 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A synthetic resin sheet integrally coextruded by coextruding sheet main body portions and a slender notching strip interposed between right and left side sheet main body portions, wherein the notching strip is formed of a mixture resin material of a first synthetic resin material of molding material of the sheet main body portions, a second synthetic resin material impossible to be bonded with the first synthetic resin material, a third synthetic resin material possible to be bonded with the first and second synthetic resin materials, and a fourth synthetic resin material for softening the molded notching strip, melt index value of the notching strip is the same as or substantially lower than that of the main body portions, and the softening temperature of the notching strip is the same as or substantially higher than that of the sheet main body portions, and a thermally molded container formed of the sheet, thereby smoothly and clearly separating the sheet main body portions and the notching strip of the sheet.
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