Process for pre-drying textile filaments after wet treatment and device for practicing this method
First Claim
1. Process for pre-drying textile filaments after wet treatment comprising the steps of:
- applying a mechanical squeeze-drying action to a layer of wet filaments (3) passing by on a conveyor (4) with a permeable conveying surface, on the one hand, simultaneously with the mechanical squeeze-drying, applying a pressure difference by circulation of air through said layer (3), and recovering moisture expelled from the filaments, wherein the mechanical squeeze-drying is performed by a squeeze-drying means comprising;
a permeable cloth guided on guide cylinders disposed above the conveyor, wherein the permeable cloth of the squeeze-drying means is driven around the guide cylinders only by being pressed against the driven conveyor, the permeable cloth being drawn toward the driven conveyor by the applied pressure difference.
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Abstract
Process for pre-drying textile filaments after wet treatment and device for practicing this method The present invention has for its object a process for pre-drying textile filaments after wet treatment and a device for practicing this process.
Process characterized in that it consists essentially in applying simultaneously to a layer of wet filaments (3) passing by on a conveyor (4) with a permeable conveying surface, on the one hand, a mechanical squeeze-drying action and, on the other hand, a pressure difference by circulation of air through said layer (3).
The invention is more particularly applicable to the field of textile industry, in particular the wet processing of textile filaments by washing and/or dyeing filaments.
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Citations
18 Claims
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1. Process for pre-drying textile filaments after wet treatment comprising the steps of:
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applying a mechanical squeeze-drying action to a layer of wet filaments (3) passing by on a conveyor (4) with a permeable conveying surface, on the one hand, simultaneously with the mechanical squeeze-drying, applying a pressure difference by circulation of air through said layer (3), and recovering moisture expelled from the filaments, wherein the mechanical squeeze-drying is performed by a squeeze-drying means comprising;
a permeable cloth guided on guide cylinders disposed above the conveyor, wherein the permeable cloth of the squeeze-drying means is driven around the guide cylinders only by being pressed against the driven conveyor, the permeable cloth being drawn toward the driven conveyor by the applied pressure difference. - View Dependent Claims (2, 15)
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3. Device for pre-drying textile filaments after wet treatment comprising:
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a driven support conveyor (4) for a layer of the filaments (3), the support conveyor having a permeable conveying surface, means for mechanically squeeze-drying the layer of filaments (3) while the layer of filaments passes by on the support conveyor (4), means (6) for application of a pressure difference by a circulation of air through said layer (3), and a chamber (7) constructed and positioned so as to allow recovery of moisture expelled from the layer of filaments, the chamber comprising at its upper portion the support conveyor (4);
wherein the means for application of a pressure difference comprises a suction device connected to the chamber; and
wherein the mechanical squeeze-drying means (5) comprises a permeable cloth guided on guide cylinders (5′
) extending above the support conveyor (4) for the layer of filaments (3), the permeable cloth of the squeeze-drying means (5) being driven around the guide cylinders only by application under pressure against the layer of filaments (3) on the driven conveyor provided by the means for application of a pressure difference. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18)
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Specification