Process of making a hydroentangled product from cellulose fibers
AssigneeLenzing Aktiengesellschaft
InventorsPat White, Haio Harms, Malcolm Hayhurst
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Abstract
The present invention relates to a process for the production of a hydroentangled product comprising cellulose fibers, which includes the steps of (a) extruding a solution comprising cellulose dissolved in an aqueous tertiary amine-oxide through a spinneret into an air gap, thereby forming filaments (b) drawing said filaments by means of a gaseous stream (c) collecting and precipitating said filaments in order to form a web (d) bonding said web by means of a hydroentanglement process (e) contacting said filaments in the air gap with a medium which at least partially coagulates the filaments. Furthermore, the invention relates to products obtainable by said products, and uses thereof.
Claims17
A process for the production of a hydroentangled product comprising cellulose fibers, comprising the steps of
- (a) extruding a solution comprising cellulose dissolved in an aqueous tertiary amine-oxide through a spinneret into an air gap, thereby forming filaments,
- (b) drawing said filaments by means of a gaseous stream,
- (c) collecting and precipitating said filaments in order to form a web,
- (d) bonding said web by means of a hydroentanglement process, and
- (e) contacting said filaments in the air gap with a medium which at least partially coagulates the filaments,
- wherein step (d) is performed on a never-dried web.
The process according to any of the preceding claims, further comprising the step of
- (g) admixing a further material to either of the solution comprising cellulose dissolved in an aqueous tertiary amine-oxide, a precursor thereof and/or said web.
Dependencies are inferred from the claim text.