Method and apparatus for producing a low-shrinking smooth yarn
AssigneeSaurer GmbH & Co. KG
InventorStefan Becker
Life of this patent
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Abstract
A method and apparatus for producing a high-strength and low-shrinkage synthetic flat yarn. After melt spinning, the filaments are combined to a yarn and drawn. Subsequently, the yarn is compressed to form a plug under the influence of heat. This plug is transported over a certain distance, so that the yarn relaxes in a low-tension state and under the influence of the increased temperature. Finally the plug is disentangled under tension to form the flat yarn, which is wound into a package.
Claims9
A method of producing a high-strength, low-shrinkage synthetic flat yarn, comprising the steps of
- melt spinning a plurality of advancing filaments from a molten polymer;
- cooling and combining the filaments to form an advancing multifilament yarn;
- drawing the advancing yarn;
- compressing the advancing and drawn yarn while heating the yarn to form an advancing plug at an increased temperature;
- disentangling the plug under a tension so as to withdraw the yarn from the plug in a heated condition and with the tension being sufficient to remove any crimp and form an advancing flat yarn;
- and
- winding the flat yarn into a package.
A method of producing a high-strength, low-shrinkage synthetic flat yarn, comprising the steps of
- melt spinning at least one advancing filament from a molten polymer;
- cooling the one filament to form an advancing yarn;
- drawing the advancing yarn;
- compressing the advancing and drawn yarn while heating the yarn to form an advancing plug at an increased temperature;
- disentangling the plug under a tension so as to withdraw the yarn from the plug in a heated condition and with the tension being sufficient to remove any crimp and form an advancing flat yarn;
- and
- winding the flat yarn into a package.
Dependencies are inferred from the claim text.