Apparatus for forming containers with fin-type seams

Details Apparatus for forming containers with fin-type seams Apparatus for forming containers with fin-type seams

1975-01-16

1978-04-18

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

53180M, 138151, 138156, 138170, 156555, 156583, B29D 2310, B32B 108

Patent

active

040849996

ABSTRACT:
A conventional fin-type seam formed on tubed bag forming sheet material provided on one face with heat sealable material, has heat sealed overlapping edge portions forming the seam. The fin slides over a back-up plate extending between it and the body of the tube to prevent scuffing of the heat sealable material with consequent seal failure. A tracking wheel engaging the fin presses it against the back-up plate, and maintains alignment.

REFERENCES:
patent: 2385897 (1945-10-01), Waters
patent: 2442936 (1948-06-01), Rohdin
patent: 2897875 (1959-08-01), Rusch et al.
patent: 3837972 (1974-09-01), Schuster

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