Foldable plastic products

Details Foldable plastic products Foldable plastic products

1987-08-06

1988-11-15

Thomas, Alexander S.

Stock material or miscellaneous articles

Nonparticulate element embedded or inlaid in substrate and...

428 81, 428 98, 428130, 52177, B32B 308, B32B 300

Patent

active

047848880

ABSTRACT:
An improved plastic product that enables adjacent portions thereof to be easily folded into juxtaposed relationship. The product has at least one elongated hinge that extends between sides of the product in along the length and/or the width thereof. The hinge is formed by utilizing an angled or curved cutting tool to create a continuous slit which in a preferred configuration (when viewed in profile) is generally L-shaped so that it extends from one surface of the product to a first location that is within the products' body and then extends therein from the first location to a second location also within the thickness of the body. The slit opens onto the one surface and thereby forms a flexible bridge integral with those portions of the product adjacent thereto, the bridge permitting such adjacent portions to be flexibly folded into juxtaposed relationship.

REFERENCES:
patent: 3292513 (1966-12-01), Palmer
patent: 3330001 (1967-07-01), Paul et al.
patent: 4002417 (1977-01-01), Vecchiotti et al.
patent: 4094217 (1978-06-01), Exline
patent: 4179252 (1979-12-01), Seufert
patent: 4448625 (1984-05-01), Carrera
patent: 4457199 (1984-07-01), Corcoran
patent: 4476174 (1984-10-01), Carrera
patent: 4528706 (1985-07-01), Branker

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