Shell Oil Comapny

Surendra N Singhal

William H Korcz

Nicholas Michaels

R Neil Campbell

The present invention resides in a method for producing a carbonated beverage can which has acceptable creep, modulus and yield strength values, which comprises a can body, which is made up of a core of a thermoplastic material, at least two layers of non-fibrous, extruded polyolefin film which has either been monoaxially stretched or biaxially stretched, [and which are wrapped around the core singularly or in plys at opposite plus/minus angles in relationship to each other to yield disproportionate stress resistance vectors for hoop and axial stresses present in said body at a 2:1 ratio] one layer of which is wrapped around said core singularly or in plys at an angle with respect to said core of from about +60.degree. to about +80.degree. and the other of said two layers is wrapped around said core singularly or in plys at an angle with respect to said core of from about -60.degree. to about -80.degree., an adhesive layer which is placed between the core and the layers of polyolefin in order to adhere the layers to the core as well as the layers to themselves and at least one layer of a barrier material, and ends which are attached [by some suitable method] to the can body.

Carbonated beverage can and method for producing a carbonated beverage

A modified end cap for a food or beverage thermoplastic container, which may be attached to a thermoplastic container sidewall without the necessity of flaring the thermoplastic sidewall of said container, which comprises: a suitable metallic end; and a metallic ring clip which is attached to the under portion of said end so that said ring clip can attach to the sidewalls of a thermoplastic container, the ring clip comprising: a first wall having a first edge and a second edge; a second wall having a first edge and a second edge, the second wall being positioned outside of and adjacent to the first wall; a third annular wall positioned substantially perpendicular to the first wall and the second wall, and having an inner and outer edge, where the inner edge is connected to the first edge of the first annular wall, and the outer edge is connected to the first edge of the second annular wall; a fourth annular wall having an inner and outer edge, where the inner edge is connected to the first edge of the second annular wall; and wherein the first and second annular walls are arranged concentric to a central longitudinal axis.

Modified end cap for thermoplastic container

A food or beverage thermoplastic container, to which a metal end can be attached without the necessity of flaring the thermoplastic sidewall of said container, which comprises thermoplastic container side walls having an upper edge and a lower edge and a ring clip which is bonded to said upper edge of the thermoplastic container sidewall by some suitable adhesive, the ring clip comprising a first wall having a first edge and a second edge, a second wall having a first edge and a second edge, the second wall being positioned outside of and adjacent to the first wall, a third annular wall positioned substantially perpendicular to the first wall and the second wall, and having an inner and outer edge, where the inner edge is connected to the first edge of the first annular wall, and the outer edge is connected to the first edge of the second annular wall, a fourth annular wall having an inner and outer edge, where the inner edge is connected to the first edge of the second annular wall, and wherein the first and second annular walls are arranged concentric to a central longitudinal axis.

Thermoplastic container

A substantially metal ring clip for attachment to the sidewall of the thermoplastic food or beverage container to enable a metal end to be attached to the thermoplastic sidewall without flaring of the thermoplastic sidewall comprises a first wall having a first edge and a second edge, where the second wall is positioned outside of and adjacent to the first wall, a third annular wall positioned substantially perpendicular to the first wall and the second wall, and having an inner and outer edge, where the inner edge is connected to the first edge of the second annular wall and the outer edge is connected to the first edge of the first annular wall, a fourth annular wall having an inner and outer edge, where the inner edge is connected to the first edge of the second annular wall, and wherein the first and second annular walls are arranged concentric to a central longitudinal axis. The outer edge of the fourth annular wall may be above or below a latitudinal axis which axis is perpendicular to the second wall at the first edge of the second wall. The first and second walls are preferably annular rings.

Metal ring clip for endcapping of container

An apparatus for applying and measuring a variable bending load to a fiber reinforced plastic test specimen under desired temperature and humidity conditions. The apparatus comprises a frame member including means for holding the ends of the test specimen while applying a bending load to the center of the test specimen.

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Tulsa, OK, United States of America

Surendra N Singhal