Package making – Closing packages and filled receptacles – By means adapted to engage outturned seam of package cover
Patent
1976-02-23
1977-11-08
Hinson, Harrison L.
Package making
Closing packages and filled receptacles
By means adapted to engage outturned seam of package cover
53300, 156583, 219243, 219388, B65B 5114, B65B 728
Patent
active
040569225
ABSTRACT:
A sealing machine is disclosed which is useable for sealing products to a backing member, as of cardboard, by covering the products with a transparent cover and by gluing the cover to the backing. Such machine includes plate means adapted to receive and locate a cover into which is placed an article to be packed, said plate means having means to locate a backing, a loading station where the components can either manually or automatically be fed to the cover in the plate means and a sealing station having a movable pressure plate wherein the movable pressure plate is brought into contact with the backing to apply pressure to the backing and the cover while the two are sealed together. The plate means is formed with electrical contacts on the underside thereof which engage depressible electric contact means mounted on the frame at the sealing station whereby electrical heating energy can be supplied to heating element means surrounding the opening in the plate means for the cover when the pressure plate is lowered for completing the sealing operation.
REFERENCES:
patent: 3001348 (1961-09-01), Rado
patent: 3092945 (1963-06-01), Wizelman
patent: 3112590 (1963-12-01), O'Brien
patent: 3170275 (1965-02-01), Rohdin et al.
patent: 3399509 (1968-09-01), Greco et al.
patent: 3552093 (1971-01-01), Heiser et al.
patent: 3685254 (1972-08-01), Currier et al.
patent: 3783581 (1974-01-01), Pierce
patent: 3792567 (1974-02-01), Balcome
Culver Horace M.
Hinson Harrison L.
Jeffery Donald D.
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