FIRE RETARDANT AND HEAT RESISTANT YARNS AND FABRICS TREATED FOR INCREASED STRENGTH AND LIQUID SHEDDING
First Claim
1. A liquid-shedding fire retardant and heat resistant yarn, comprising:
- a fire retardant and heat resistant inner core comprised of;
one or more types of fire retardant and heat resistant polymer fibers and/or filaments having an LOI of at least about 50 and that do not burn when exposed to heat or flame having a temperature of about 3000°
F.; and
one or more types of strengthening fibers and/or filaments; and
an outer liquid-shedding and strengthening shell encapsulating at least a portion of the inner core comprised of a liquid-resistant and strengthening polymer coating,wherein the liquid-shedding fire retardant and heat resistant yarn has increased strength, abrasion resistance, durability and liquid shedding ability compared to a yarn consisting exclusively of the fire retardant and heat resistant inner core.
1 Assignment
0 Petitions
Accused Products
Abstract
Fire retardant and heat resistant yarns and fabrics include an inner core comprised of oxidized polyacrylonitrile encapsulated by an outer shell comprised of a liquid-resistant and strengthening polymer material. The liquid-resistant and strengthening polymer material includes one or more types of cured silicone polymer resin. A fluorchemical may be at least partially impregnated into the inner core prior to applying the liquid-resistant and strengthening polymer material in order to further enhance the liquid shedding properties of the yarns or fabric. Because the silicone polymer resin only encapsulates the yarn, but does not form a continuous coating over the whole fabric, the treated fabric is still able to breath through pores and spaces between individual yarn strands that make up the fabric. The liquid-resistant and strengthening polymer material increases the strength, abrasion resistance, durability and liquid and gel shedding capability of the fire retardant heat resistant yarn or fabric.
68 Citations
21 Claims
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1. A liquid-shedding fire retardant and heat resistant yarn, comprising:
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a fire retardant and heat resistant inner core comprised of; one or more types of fire retardant and heat resistant polymer fibers and/or filaments having an LOI of at least about 50 and that do not burn when exposed to heat or flame having a temperature of about 3000°
F.; andone or more types of strengthening fibers and/or filaments; and an outer liquid-shedding and strengthening shell encapsulating at least a portion of the inner core comprised of a liquid-resistant and strengthening polymer coating, wherein the liquid-shedding fire retardant and heat resistant yarn has increased strength, abrasion resistance, durability and liquid shedding ability compared to a yarn consisting exclusively of the fire retardant and heat resistant inner core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A liquid-shedding fire retardant and heat resistant yarn, comprising:
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a fire retardant and heat resistant inner core comprised of polyacrylonitrile fibers and/or filaments; at least one fluorochemical at least partially impregnated within the inner core; and an outer liquid-shedding and strengthening shell encapsulating at least a portion of the inner core comprised of a liquid-resistant and strengthening silicone polymer coating, wherein the liquid-shedding fire retardant and heat resistant yarn has increased strength, abrasion resistance, durability and liquid shedding ability compared to a yarn consisting exclusively of the fire retardant and heat resistant inner core. - View Dependent Claims (16)
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17. A liquid-shedding fire retardant and heat resistant fabric, comprising:
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a plurality of liquid-shedding fire retardant and heat resistant yarn strands woven, knitted or otherwise joined together to form the fabric, wherein the fire retardant and heat resistant yarn strands are comprised of polyacrylonitrile fibers and/or filaments, wherein the fabric includes spaces between the yarn strands; and a liquid-shedding and strengthening shell encapsulating at least a portion of the yarn strands, wherein the liquid-shedding and strengthening shell is comprised of a liquid-resistant and strengthening polymer coating that is applied so that the fabric maintains spaces between the yarn strands and remains porous and breathable, wherein the liquid-shedding fire retardant and heat resistant fabric has increased strength, abrasion resistance, durability and liquid shedding ability compared to a fabric consisting exclusively of the fire retardant and heat resistant yarn strands. - View Dependent Claims (18, 19, 20, 21)
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Specification