Apparatus for smoothing the surfaces of moving webs

Details Apparatus for smoothing the surfaces of moving webs Apparatus for smoothing the surfaces of moving webs

1975-04-21

1977-07-19

Mackey, Robert R.

Textiles: cloth finishing

Expanding device for textile webs

Spreader

38143, 162271, 226196, 242 76, D06C 300

Patent

active

040358780

ABSTRACT:
This invention provides an apparatus for removing wrinkles in a thin flexible moving web such as paper or textiles. The web is passed over a bar curved to effect a shear force on the web and/or a tensile force on the web in a direction perpendicular to the direction of movement of the web. The bar is oscillated resonantly or nonresonantly with one component of the oscillation being in a direction normal to the web surface so that its intermittent contact with the web causes any wrinkles therein to collapse. Gas, under super-atmospheric pressure can be passed through ports in the bar surface and into contact with the web to assist in collapsing wrinkles. SP

REFERENCES:
patent: 3286307 (1966-11-01), Watson
patent: 3440736 (1969-04-01), Fleissner et al.
patent: 3474509 (1969-10-01), Bray
patent: 3521802 (1970-07-01), Bossons
patent: 3698039 (1972-10-01), Kalwaites

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