Method of making plastic plate

Details Method of making plastic plate Method of making plastic plate

A - Human Necessities

47

G

A47G 19/00 (2006.01) A47G 19/03 (2006.01) B29C 53/34 (2006.01) B29C 57/12 (2006.01) B65D 1/34 (2006.01) B65D 21/02 (2006.01)

Patent

CA 2199706

Molded plastic plates (50, 50a, 50b) having a rolled edge rim (56, 56a, 56b) and a method of rolling the edges (60) of the molded plastic plates (50, 50a, 50b). The plastic plates (50, 50a, 50b) are pre-molded with lugs (58) that project outwardly from the sides (54) of the plates (50, 50a, 50b). The lugs (58) of one plate (50, 50a, 50b) contact the rim (56) of the next successive plate (50, 50a, 50b) in a stack of plates (50, 50a, 50b) to create a gap (68) between the plates (50, 50a, 50b) stacked one on top of another. The gap (68) allows each individual plate (50, 50a, 50b) to be picked up by the threads on a plurality of threaded rollers which press on the rim (56) of the plate (50, 50a, 50b) to form the rolled edge (60).

Assiettes en plastique moulé (50, 50a, 50b) possédant un bord roulé (56, 56a, 56b) et procédé de fabrication des bords roulés (60) desdites assiettes (50, 50a, 50b). Ces assiettes (50, 50a, 50b) sont moulées préalablement avec des pattes (58) formant une saillie vers l'extérieur depuis les côtés (54) desdites assiettes (50, 50a, 50b). Les pattes (58) d'une assiette (50, 50a, 50b) viennent en contact avec le bord (56) de l'assiette suivante (50, 50a, 50b) d'une pile d'assiettes (50, 50a, 50b), afin de créer un espace (68) entre les assiettes (50, 50a, 50b) empilées les unes au dessus des autres. Cet espace (68) permet de saisir chaque assiette (50, 50a, 50b) par les filets d'une pluralité de rouleaux filetés qui exercent une pression sur le bord (56) de l'assiette (50, 50a, 50b), afin de fabriquer le bord roulé (60).

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