Protective apparel fabric and garment
View Patent ↗A fabric for flame resistance apparel with a limiting oxygen index greater than 21 employs a yarn of a co-mingled bundle of two different filaments of different shrinkage characteristics with the yarn having a random entangled loop structure.
1. A woven fabric comprised of continuous filament yarn, consisting of a co-mingled bundle of 10 to 90 wt % para-aramid filaments and 90 to 10 wt % meta-aramid filaments, said yarn having a random entangled loop structure wherein the weight per unit length of the yarns is 3 to 25 percent higher than a continuous filament yarn having the same composition but no entanglement or loops.
2. The woven fabric of claim 1 wherein the weight per unit length of the yarn is 10 to 18 wt % higher than a continuous filament yarn having no entanglement or loops.
3. The woven fabric of claim 1 wherein the yarn having a random entangled loop structure has a linear density of 200 to 1000 denier (220 to 1100 dtex).
4. The woven fabric of claim 3 wherein the yarn having a random entangled loop structure has a linear density of 300 to 600 denier (340 to 680 dtex).
5. The woven fabric of claim 1 made from a plain weave.
6. The woven fabric of claim 1 made from a twill weave.
7. The woven fabric of claim 1 wherein the para-aramid filaments are poly(paraphenylene terephthalamide) filaments.
8. The woven fabric of claim 1 wherein the meta-aramid filaments are poly(metaphenylene isophthalamide) filaments.
9. The woven fabric of claim 1 wherein the para-aramid filaments are poly(paraphenylene terephthalamide) filaments and are present in an amount of 50% and the meta-aramid filaments are poly(metaphenylene isophthalamide) filaments and are present in an amount of 50%.