초록 ▼

An improved composite container is disclosed including a tubular fibrous body wall having at its upper end a reversely curled portion the upper extremity of which is radially inwardly compressed in such a manner as to form an annular external locking projection by means of which a synthetic plastic

An improved composite container is disclosed including a tubular fibrous body wall having at its upper end a reversely curled portion the upper extremity of which is radially inwardly compressed in such a manner as to form an annular external locking projection by means of which a synthetic plastic closure cap may be fastened to close the container. Preferably the closure member is connected with the container by a tearable tamperproof connection including a radially inwardly directed annular rib that is locked beneath the annular body projection to maintain the closure cap on the container. A method is also disclosed for forming the container body, including the steps of radially outwardly curling the upper end of the body member, radially inwardly comressing the upper extremity of the reversely curled portion, and mounting a synthetic plastic snap-type closure member on the compressed curled end. In one embodiment, a circumferential recess is formed (for example, by skiving) in the outer surface of the tubular fibrous body wall prior to the reverse curling step, whereby the upper extremity of the reversely curled portion is radially inwardly compressed into the recess.

대표청구항 ▼

A composite container, comprising a vertically arranged tubular fibrous body member the upper end portion of which is relieved on its outer surface to a diameter less than the outer diameter of said body member, said relieved portion being reversely curled outwardly to a position extending concentri

A composite container, comprising a vertically arranged tubular fibrous body member the upper end portion of which is relieved on its outer surface to a diameter less than the outer diameter of said body member, said relieved portion being reversely curled outwardly to a position extending concentrically about said body member, the upper extremity of said reversely curled portion being radially compressed inwardly at least partially within the relieved area to define at the lower end of said reversely curled portion a radially outwardly extending annular locking projection, whereby said locking projection defines means for fastening a closure member to said body member.