Back to results
US 12,042,055 B2Granted
Flame retardant non-woven fabric for mattress and manufaturing method thereof
AssigneeDitgreen Co., Ltd.
InventorsSoon-yong Park, Jae-ryong Moon, Yong-dug Choi, Hyo-sup Chang, Yong-seok Park, Woo-hyung Lee, Bo-gyeong Cha
Life of this patent
Estimating the term…
Abstract
The present invention relates to a flame-retardant nonwoven fabric for a mattress, and a flame-retardant nonwoven fabric for mattresses comprising flame-retardant rayon (FR-Rayon) staple fibers of 20 to 50% by weight; modacrylic staple fibers of 30 to 60% by weight; polyimide (PI) staple fibers of 10 to 30% by weight; and low melting polyester (LM PET) staple fibers of 5 to 20% by weight provides enhanced flame retarding and mechanical properties.
Claims3
A method of preparing a flame-retardant nonwoven fabric for mattresses comprising:
- blending flame-retardant rayon (FR-Rayon) staple fibers of 20 to 50% by weight;
- modacrylic staple fibers of 30 to 60% by weight;
- polyimide (PI) staple fibers of 10 to 30% by weight;
- and low melting polyester (LM PET) staple fibers of 5 to 20% by weight, wherein the FR-Rayon staple fibers, the modacrylic staple fibers, the PI staple fibers, and the LM PET staple fibers are treated with an oil agent;
- preparing a web by carding and laying blended fibers;
- needle punching the web;
- deoiling the blended staple fibers in the web;
- and
- heat-treating the web.
6 more elements
Dependencies are inferred from the claim text.