Hinge for thermoplastic material

Details Hinge for thermoplastic material Hinge for thermoplastic material

1983-05-02

1984-11-13

Kimlin, Edward

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156221, 156209, 156196, 1562722, 1562751, 264284, B31F 120, B29C 1902, B29C 1906, B29C 1700

Patent

active

044824173

ABSTRACT:
A hinge for thermoplastic material particularly suitable for loose-leaf binder covers is constructed by embedding an embossed welding die into the thermoplastic material to a depth less than the full height of the embossment so that no vertical lines are produced in the thermoplastic by the longitudinal edges of the die. 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.

REFERENCES:
patent: T535843 (1968-12-01), Pardue et al.
patent: 4397904 (1983-08-01), Hulber et al.
1975-1976 Modern Plastics Encyclopedia-"High Freq. Head-Sealing/Embossing"-by Kenneth Arutt.

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