Method and apparatus for sealing the sidewall and bottom seam po

Details Method and apparatus for sealing the sidewall and bottom seam po Method and apparatus for sealing the sidewall and bottom seam po

1982-07-20

1983-10-11

Kimlin, Edward C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156446, 156499, 156567, 53563, 493102, 493106, 493107, 493158, B29C 2700, B65B 700

Patent

active

044090455

ABSTRACT:
Method and apparatus for fabricating and seaming two-piece containers such as frustoconical cups and the like are provided which include a two-piece mandrel having retractable tip or nose piece which is coaxial in its relation to the main body of the mandrel in its extended position and retracts to an offset position. The retraction/extension path is configured to constrain the surface of the tip or nose piece to impart a progressive sealing pressure to a portion of the container side seam against the reaction surface of a seam clamp. The tip also has vacuum porting for holding a bottom blank during the container forming process and acts to seal the bottom blank in the container bottom curl and in the case of effecting heat sealed seams in the container, to position the bottom blank so as to preclude heat damage to the bottom wet line area of the container.

REFERENCES:
patent: 2602383 (1952-07-01), Barbieri
patent: 3439590 (1969-04-01), Rosenberg et al.
patent: 3547012 (1970-12-01), Amberg et al.
patent: 3846207 (1974-11-01), MacDaniel et al.
patent: 4238267 (1980-12-01), Konstantin

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