Continuous lid seam

Details Continuous lid seam Continuous lid seam

1988-09-12

1989-09-19

Marcus, Stephen

Receptacles

Closures

Removable closure retained by adhesive or fusion means

53449, 53478, 156 69, 1562724, B65D 4100

Patent

active

048673366

ABSTRACT:
A process is disclosed for the fabrication of a thermoplastic container having a lid bonded thereto. The container and lid are formed from laminated thermoplastics wherein at least one of the layers that forms the laminate is dielectrically heatable. The heatable layers of the cup and lid are placed in contact with one another, dielectrically heated, and melt together to form a continuous bonded area or lid seam between the cup and lid. The materials of the cup and lid are selected such that the resultant bonded area forms an exygen barrier between the contents of the container and the outside environment. The strength of the bonded area is selected such that the lid may be manually-removed from the container.

REFERENCES:
patent: 4211338 (1980-07-01), Bublitz
patent: 4280653 (1981-07-01), Elias
patent: 4420670 (1983-05-01), Croswell et al.
patent: 4435244 (1984-10-01), Beck et al.
patent: 4441876 (1984-04-01), Marc
patent: 4448345 (1984-03-01), Helms
patent: 4451721 (1984-07-01), Nemeskeri
patent: 4452842 (1984-06-01), Borges et al.
patent: 4512942 (1985-01-01), Babbin et al.
patent: 4757914 (1988-07-01), Roth et al.

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