초록 ▼

A closure for a container wherein a tape having a metal part and thermoplastic material which is applied to the container wall and heated. Most of the material is squeezed out from between the metal part and the wall into a rib which is formed during application. The material in the rib has an isotr

A closure for a container wherein a tape having a metal part and thermoplastic material which is applied to the container wall and heated. Most of the material is squeezed out from between the metal part and the wall into a rib which is formed during application. The material in the rib has an isotropic structural characteristic since the rib formation provides a region into which the excess material is directed minimizing the shearing effect of the flow of material along the interface with the container wall. Also the rib reinforces the tape in the critical region to resist pressure of gasses in the container when used to contain carbonated beverages.

대표청구항 ▼

The combination of an end member having exterior and interior surfaces and having a pour opening defined by a marginal edge, a closure for said opening comprising a tape having a laminate including a metal top portion and a thermoplastic bottom portion, heat activatable adhesive means between said e

The combination of an end member having exterior and interior surfaces and having a pour opening defined by a marginal edge, a closure for said opening comprising a tape having a laminate including a metal top portion and a thermoplastic bottom portion, heat activatable adhesive means between said exterior and said thermoplastic bottom portion of said tape, said bottom portion being releasably adhered through said adhesive means to said exterior by heating said tape and pressing the same against said exterior surface, said tape having formed in situ upon application to the end panel an outwardly distended rib encompassing said opening circumjacent said marginal edge by flowing into a cavity formed in said metal top portion excess thermoplastic material of the bottom portion attendant to pressing of said heated tab against the interior of said end panel to thereby minimize the flow of said thermoplastic material at the interface with the exterior of the end panel and thereby provide an improved bond therewith.