Device for the sectional application of liquor to a fabric web

Abstract

A device for the sectional application of liquor to a running fabric web includes an applicator roll that has liquor applied to it which, during the application of the liquor to the fabric web is located lying against the fabric web. A removal device is provided, with which the liquor is able to be removed section by section from the applicator roll in the longitudinal direction of the applicator roll and / or an application device is provided, with which the liquor is able to be applied section by section onto the applicator roll.

Description

INCORPORATION BY REFERENCE[0001]European Published Patent Application No. 1 621 257 is expressly incorporated herein in its entirety by reference thereto.FIELD OF THE INVENTION[0002]The present invention relates to a device for the sectional application of liquor to a running fabric web.BACKGROUND INFORMATION[0003]Such devices, which are also referred to as “kiss-roll applicators,” are used especially if small amounts of liquor have to be applied to the fabric web.[0004]In specific embodiments of these devices, the application of liquor takes place in that the rotary driven applicator roll dips into the liquor located in a basin, and using a part of its circumference, scoops up or carries along small quantities of liquor onto its surface because of the rotation, and thus conveys it to the advancing fabric web that lies against the applicator roll.[0005]The quantity of liquor applied per area of the fabric web is determined by the rotary speed of the applicator roll. Thus, there is a...

AI Technical Summary

Benefits of technology

[0009]Example embodiments of the present invention may provide a device for the sectional application of liquor onto a running fabric web such that its operability with respect to disadvantages mentioned above may be improved.

[0014]The application device(s) that are able to be used alternatively or in addition may include a row of application nozzles, the application nozzles being able to have liquor applied to them, optionally or independently of one another. This may provide that it is technically relatively costly, since all the nozzles may have to be designed to be able to be turned off and on individually.

[0022]In order to provide a sharp lateral limitation of the areas, in which the liquor is supposed to be applied to the fabric web, the reservoirs may have at their lateral edges, that is, edges that are aligned parallel to the fabric web traveling direction, sealing devices which lie sealingly against the roll circumference in the operating situation of the reservoirs. The edges of the sealing devices lying against the applicator roll may be lined with a friction-reducing material, such as Teflon, in order to avoid creating wear marks on the roll circumference, which may reduce the quality of the sectional application of the liquor.

Problems solved by technology

Thus, there is a slippage between the applicator roll and the fabric web.

What is believed to be disadvantageous in these devices is that the stripes, in which the liquor was applied to the fabric web, and those in which application of liquor does not take place, are not sharply separated from one another.

It is also believed that such devices rapidly become soiled in the area of the covering.

The danger is believed to exist that, at the roll surface, stripe-shaped contours are created by different coefficients of friction between the roll and the covering on the one hand, and the roll and the fabric web on the other hand.

It is believed to be of disadvantage that, during operation, changes in the width of the stripes cannot be made.

This may provide that it is technically relatively costly, since all the nozzles may have to be designed to be able to be turned off and on individually.

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