Sustained release fibers
AssigneeInvista Textiles (U.K.) Limited
InventorNatalie Gibson
Life of this patent
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Abstract
The present disclosure provides, in certain embodiments, a fiber comprising a core comprising a first polymer and at least active ingredient, wherein the at least one active ingredient is encapsulated by a second polymer; and at least one polymer layer at least partially encapsulating the core. The fiber disclosed herein may be capable of releasing the at least one active ingredient for at least three months. The active ingredient disclosed herein may be a dust mite inhibitor, and may be chosen from a fragrance, an antimicrobial, and a pesticide. Additionally, the fiber disclosed herein may be inserted into a yarn or combine with other textile materials during bulk fiber production or yarn processing, i.e., twisting and heat setting, for use in carpets, bedding, and other home textiles.
Claims54
A fiber comprising:
- a core comprising a first polymer and at least one active ingredient, wherein the at least one active ingredient is encapsulated by a second polymer;
- and
- at least one polymer layer at least partially encapsulating the core,
- wherein the fiber releases the at least one active ingredient for at least three months.
A dust mite inhibiting fiber comprising:
- a core comprising a first polymer and at least one dust mite inhibitor encapsulated by a second polymer;
- and
- at least one polymer layer at least partially encapsulating the core;
- wherein the dust mite inhibiting fiber releases the at least one dust mite inhibitor for at least three months.
A dust mite inhibiting fiber comprising:
- a core comprising a first polymer and at least one dust mite inhibitor, wherein said core does not comprise zeolites or silica;
- and
- at least one polymer layer at least partially encapsulating the core;
- wherein the dust mite inhibiting fiber releases the at least one dust mite inhibitor for at least three months.
A fabric material comprising:
- at least one fiber comprising
- a) a core comprising a first polymer and at least one active ingredient chosen from a fragrance, an antimicrobial, and a pesticide, wherein the at least one active ingredient is encapsulated by a second polymer;
- and
- b) at least one polymer layer encapsulating the core;
- wherein the fiber releases the at least one active ingredient for at least three months.
A carpet comprising yarns comprising at least one fiber comprising
- a) a core comprising a first polymer and at least one active ingredient chosen from a fragrance, an antimicrobial, and a pesticide, wherein the at least one active ingredient is encapsulated by a second polymer;
- and
- b) at least one polymer layer encapsulating the core;
- wherein the fiber releases the at least one active ingredient for at least three months.
A process of making a carpet comprising including from 01 to 5 percent by weight of at least one sustained-release fiber comprising:
- a core comprising a first polymer and at least one active ingredient chosen from a fragrance, an antimicrobial, and a pesticide, wherein the at least one active ingredient is encapsulated by a second polymer;
- and
- at least one polymer layer at least partially encapsulating the core,
- wherein the fiber releases the at least one active ingredient for at least three months.
A process of making a fabric comprising including from 0.1 to 60 percent by weight of at least one sustained-release fiber comprising:
- a core comprising a first polymer and at least one active ingredient chosen from a fragrance, an antimicrobial, and a pesticide, wherein the at least one active ingredient is encapsulated by a second polymer;
- and
- at least one polymer layer at least partially encapsulating the core,
- wherein the fiber releases the at least one active ingredient for at least three months.
Dependencies are inferred from the claim text.