Method for dyeing a hook-and-loop fastener strap
AssigneeGottlieb Binder GmbH & Co. KG
InventorsLars Heepe, Konstantinos Poulakis, Markus Schneider
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Abstract
A method for dyeing a hook-and-loop fastener strap is disclosed. The hook-and-loop fastener strap continuously passes through a basic or neutral dyeing solution in a dyeing device. The dyeing solution attaches itself to the hook-and-loop fastener strap. The dyeing solution has a dye that binds to the hook-and-loop fastener strap only when the dyeing solution is in an acidic state. After passing through the dyeing device, the hook-and-loop fastener strap with the deposited dyeing solution is passed through a damper, causing the dyeing solution to become acidic. The dye adheres to the hook-and-loop fastener strap to dye the hook-and-loop fastener strap. A dyeing system for implementing the method is also disclosed.
Claims16
A method for dyeing a hook-and-loop fastener strap having hooks, mushrooms and/or loops, wherein said method having the following sequentially performed steps:
- a) continuously passing the hook-and-loop fastener strap through a dyeing device to apply a dyeing solution with a pH value of at least 7 to the hook-and-loop fastener strap, wherein the dyeing solution has a dye, wherein the dye is formed as an acid dye which binds to the hook-and-loop fastener strap at a pH value of less than 7;
- and
- b) continuously passing the hook-and-loop fastener strap with the applied dyeing solution through a damper, wherein the pH value in the damper is lowered to below 7 to increase adhesion of the dye to the hook-and-loop fastener strap.
Dependencies are inferred from the claim text.