Fiber
AssigneeOceanSafe AG
InventorManuel Schweizer
Life of this patent
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Abstract
The present invention relates to a fiber obtainable or being obtained by a method comprising: spinning a melt comprising an aliphatic polyester, an aliphatic-aromatic polyester, and a polyhydroxyalkanoate through a hollow fiber spinning nozzle to obtain a precursor fiber; and cooling the precursor fiber under a temperature gradient, thereby obtaining the fiber. The invention also relates to yarns and clothings made from such fiber and to methods of preparing such fiber.
Claims19
A method of preparing a fiber, comprising:
- spinning a melt comprising an aliphatic polyester, an aliphatic-aromatic polyester, and a polyhydroxyalkanoate through a hollow fiber spinning nozzle to obtain a precursor fiber;
- and
- cooling the precursor fiber under a temperature gradient, thereby obtaining the fiber, wherein the temperature gradient is generated by cooling the precursor fiber from one side.
A fiber being made from a mixture comprising an aliphatic polyester, an aliphatic-aromatic polyester, and a polyhydroxyalkanoate,
- wherein the fiber comprises, in a longitudinal direction, two types of portions,
- wherein the one type of portions are thicker portions and the other type of portions are thinner portions,
- wherein said thicker portions and thinner portions extend in a vertical direction relative to the longitudinal direction of the fiber,
- wherein an extension in the vertical direction of a thicker portion is greater than an extension in the vertical direction of a thinner portion;
- and
- wherein at least a part of the thicker portions has a cavity, and at least a part of the thinner portions has a compact structure.
A mixture comprising an aliphatic polyester, an aliphatic-aromatic polyester, and a polyhydroxyalkanoate, wherein the mixture comprises
- the aliphatic polyester in an amount of from 30 to 70% by weight,
- the aliphatic-aromatic polyester in an amount of from 10 to 60% by weight, and
- the polyhydroxyalkanoate in an amount of from 1 to 25% by weight
- based on 100% by weight of the combined amount of the aliphatic polyester, the aliphatic-aromatic polyester, and the polyhydroxyalkanoate.
Dependencies are inferred from the claim text.