Textiles: cloth finishing – Expanding device for textile webs – Biaxial expansion
Patent
1988-05-18
1990-01-02
Schroeder, Werner H.
Textiles: cloth finishing
Expanding device for textile webs
Biaxial expansion
26 91, D06C 300
Patent
active
048903655
ABSTRACT:
An apparatus for simultaneously treating film webs biaxially is described. Film edges are clamped into tentering clamps running around in an endless track. The individual tentering clamps are interconnected with one another by an upper and a lower chain, whereby the connection between two successive tentering clamps is respectively established by two chain links loosely interconnected with each other. The loose chain links can be brought in pairs into a lengthwise extending arrangement or into a kinked arrangement and vice versa, with the aid of control rails arranged outside of the chain track cooperating with a chain link formed as a bellcrank. In this manner the spacing between two successive tentering clamps is shortened or alternatively lengthened. Thus, it is possible to achieve a lengthwise variation in the film web being treated, and especially to adjust a fine shrinking ratio.
REFERENCES:
patent: 2755533 (1956-07-01), Miller
patent: 3150433 (1964-09-01), Kampf
patent: 3457608 (1979-07-01), Gageur
patent: 3748704 (1973-07-01), Schmidt et al.
patent: 4435884 (1984-03-01), Bosch
patent: 4674159 (1987-06-01), Sclater et al.
Fasse W. G.
Kane, Jr. D. H.
Lindauer Dornier Gesellschaft mbH
Schroeder Werner H.
Tokar Jodi
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