Tray-like container and a method of and an apparatus for manufac

Details Tray-like container and a method of and an apparatus for manufac Tray-like container and a method of and an apparatus for manufac

1975-10-20

1977-11-08

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Diverse distinct type shaping means

425343, 425398, 425DIG48, B29C 300, B29C 2400

Patent

active

040573800

ABSTRACT:
A tray-like container of a plastic coated paper blank having a base panel, which has four or more even numbers of side edges, side walls, corner portions, a peripheral portion extending along side walls and corner portions, and a pig-tail like folding line formed in each corner portion of the peripheral portion, of which a flange of the tray-like container is formed. The pig-tail like folding line assists in the outward bending of the peripheral portion so that it forms the outwardly projecting flange of the tray-like container. The outer shape of the tray-like container is forcedly molded by a movable and stationary complementary moulds.

REFERENCES:
patent: 2296744 (1942-09-01), Simmons
patent: 2547331 (1951-04-01), Lent
patent: 2760231 (1956-08-01), Clair
patent: 3203218 (1965-08-01), Bolt et al.
patent: 3256375 (1966-06-01), Bolelli et al.
patent: 3341895 (1967-09-01), Shelby

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