Method for the application of a lubricant on a sewing yarn
AssigneeAmann & Sohne GmbH & Co.
InventorsKurt Truckenmuller, Gottlob Worner
Life of this patent
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Abstract
A method is described for application a lubricant onto a sewing yarn. The sewing yarn to be lubricated is prepared as heap of yarn or as wound package. This heap respectively this package is superfused or perfused with a bath containing said lubricant. As fluid a supercritical fluid is selected. Whereby after the perfusion respectively the superfusion a temperature reduction, a pressure reduction and/or a volume increase is performed.
Claims28
A method for applying a lubricant to the surface of a sewing yarn which has been prepared into a heap, comprising:
- bringing a fluid containing said lubricant into contact with said sewing yarn by perfusion or superfusion for a period of time, wherein said fluid is a supercritical fluid, and
- thereafter performing a temperature reduction, a pressure reduction, or a volume increase thereby causing said lubricant to be deposited on the surface of said sewing yarn,
- wherein said fluid further contains a covering preparation which is deposited in capillary gaps of said sewing yarn and causes adhesion of capillaries in said yarn.
A method for applying a lubricant to the surface of a sewing yarn comprising wetting the surface of said sewing yam with a fluid containing said lubricant, wherein said fluid is a supercritical fluid, and thereafter performing a temperature reduction, a pressure reduction, or a volurne increase, thereby causing said lubricant to be deposited on the surface of said yarn,
- wherein said fluid further contains a covering preparation which is deposited in capillary gaps of said sewing yarn and causes adhesion of capillaries in said yarn.
Dependencies are inferred from the claim text.