Hinge for thermoplastic material

Details Hinge for thermoplastic material Hinge for thermoplastic material

B - Operations, Transporting

29

C

18/1055

B29C 59/02 (2006.01)

Patent

CA 1191316

ABSTRACT A process for constructing a hinge for thermoplastic material which is particularly suitable for loose-leaf binder covers is constructed by inserting a die into the thermoplastic material, the die having an embossed pattern consisting of alternating teeth and depressions along the face which contacts the thermoplastic material such that the die is embedded in the material to a depth less than the height of the teeth, such that the bottom of the depressions between the teeth do not contact the thermoplastic material. Sufficient heat is then generated at the die to melt the thermoplastic material in conformity with the embossed pattern of the die. The thermoplastic material is then cooled until it hardens. The resulting surface of the thermoplastic is a hinge containing indentations corresponding to the pattern of the embossed die, which permit the thermoplastic to be folded at the hinge area.

459427

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