| 摘要 |
Needled felt for papermaking according to the invention comprises fibers (with a specific fineness and a specific diameter) composed of a block polyamide copolymer having a hard segment of a polyamide component such as a block polyamide copolymer, particularly nylon 12, and a soft segment of a polyether component. This felt has better elasticity, recovery properties, durability, etc. than those of other felts made of fibers showing rubbery elasticity, such as elastic polyurethane fibers, and, in addition, the fibers facilitate needling which has been difficult with the prior art rubbery elastic fibers. |
