Patent Number: 6,332,552

Title: Container closure

Abstract: There is provided a container closure that can easily be manufactured, hasimproved drop strength and is convenient for opening operation. Thepresent invention provides a container closure which includes a substratehaving adequate property for retaining an object which is enclosed in acontainer, a peripheral section formed on the periphery area of thecontainer closure on the opposite side of a side where the substrate isattached to a container body, a panel section covering an area of thesubstrate surrounding by the peripheral section on the same side where theperipheral section is provided, and a score section formed between theperipheral portion and the panel section to provide a weakened region. Theperipheral section and the panel section is a plastic layer formed withthe same heat-fusible plastic as the substrate. A substantial area of thescore section is constructed of the substrate. Further, a thin layer isformed on at least a part of the score section with the heat-fusibleplastic that connects the peripheral section and the panel section.

Inventors: Iwasaki; Yoshio (Shiga-ken, JP), Morita; Akira (Shiga-ken, JP), Mori; Hirotsugu (Kyoto, JP)


International Classification: B65D 47/10 (20060101); B65D 41/32 (20060101); B65D 47/06 (20060101); B65D 17/40 (20060101); B65D 17/28 (20060101); B65D 17/38 (20060101); B65D 017/40 ()

Expiration Date: 12/25/2014