Tokan Kogyo Co., Ltd.

Kikuya Hirakawa

Keiichi Takahashi

Yukio Sarusawa

Hiroshi Aoyama

The process for producing a container cover member by stamping a sheet of material stock to form a plurality of through bores, injection molding a closure member in each through bore and subjecting each through bore to a second stamping to form a handle in a portion of the closure member.

Process for making a container cover member having synthetic resin

A container cover member comprising a cover sheet formed of paper or thermoplastic synthetic resin having an opening of a desired size and shape in a predetermined position and over said opening a closure member having a pull tab or handle formed of thermoplastic resin which is compatible with the material of said cover sheet, said opening being easily uncovered when said pull tab is pulled up, and the process for making the cover member.

Container cover member having synthetic resin openable portion

A container formed of paper or thermoplastic synthetic resin and having a cover member which comprises a cover sheet having an openable portion defined by weakened means such as a series of slots, slits or perforations, said slots, slits or perforations being covered by a continuous portion on at least one side of the cover member to define a continuous thermoplastic synthetic resin belt zone, said belt zone being attached to said slots slits or perforations by rivet heads for sealing the slots, slits or perforations and also having a pull tab formed at one end thereof, whereby an opening is made in the cover of said container by merely pulling said pull tab.

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Ebina, Japan

Kikuya Hirakawa