Method and apparatus for forming carton blanks with hemmed edges

Details Method and apparatus for forming carton blanks with hemmed edges Method and apparatus for forming carton blanks with hemmed edges

1992-07-21

1993-08-17

Kisliuk, Bruce M.

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

And with bending

493409, 493 60, 493 72, 493135, 493144, B65H 4528, B65H 4530, B65H 4700, B65H 4564

Patent

active

052364089

ABSTRACT:
A paper box folding and sealing machine for forming a hemmed edge. A skiving station removes a portion of a carton blank material at the area to be hemmed. A hemming station folds the skived portion onto the blank, irons it and then opens the hem to lie in a predetermined plane that intersects the plane of the blank. Superheated air directed in a laminar-like air flow, activates a thermoplastic coating adjacent the skived portion of the area to be hemmed. Folding fingers, tack rollers and presser rollers then fold the skived portion onto the activated thermoplastic coating to form a hem that is sealed against the adjacent portion of the blank.

REFERENCES:
patent: 3604317 (1971-09-01), Baun
patent: 3654842 (1972-04-01), Schwenk
patent: 3847540 (1974-11-01), Farfaglig
patent: 4708708 (1987-11-01), Fries, Jr.
patent: 4931031 (1990-06-01), Lisiecki
patent: 4979932 (1990-12-01), Burnside
patent: 5156585 (1992-10-01), Dimur

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