Tenter clips for use in stretching thermoplastic film in a tente

Details Tenter clips for use in stretching thermoplastic film in a tente Tenter clips for use in stretching thermoplastic film in a tente

1994-03-01

1995-05-23

Calvert, John J.

Textiles: cloth finishing

Expanding device for textile webs

Biaxial expansion

69 193, 381021, 24 68D, D06C 300, D06C 304

Patent

active

054169593

ABSTRACT:
A tenter clip is provided for gripping a web of thermoplastic film between the curved surface of a toggle arm and an anvil surface which is tapered at each of its ends. The surface configurations of the toggle arm and anvil define effective surfaces for gripping the film while allowing the film to stretch under these surfaces. Beads are formed at the edges of the web during stretching. These beads wedge into substantially V-shaped gripping regions defined by the toggle arm and anvil to assist in the stretching operation.

REFERENCES:
patent: 1438955 (1922-12-01), Gilmore
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patent: 3391421 (1968-07-01), D'Onofrio
patent: 3890421 (1975-06-01), Habozit
patent: 4637103 (1987-01-01), Hutzenlaub
patent: 4853602 (1989-08-01), Hommes et al.
patent: 4890365 (1990-01-01), Langer

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