Abstract:
A paperboard and a cardboard comprising at least one nonwoven web layer are provided. The nonwoven web layer comprises a plurality of first fibers, a plurality of second fibers, and a binder. The first fibers comprise a water non-dispersible synthetic polymer and have a different configuration and/or composition than the second fibers. The first fibers have a length of less than 25 millimeters and a minimum transverse dimension of less than 5 microns. The nonwoven web layer comprises at least 1 weight percent of the first fibers, at least 10 weight percent of the second fibers, and at least 1 weight percent of the binder. The paperboard and cardboard can incorporate a large amount of post consumer recycled fibers and still exhibit high strength and durability. Also disclosed is a process for producing the first fibers and the multicomponent fibers from which they are derived.
Abstract:
PROBLEM TO BE SOLVED: To provide a filter medium low in pressure loss, a nonwoven fabric used in the air permeable support material of the filter medium and a filter unit using the filter medium.SOLUTION: A filter medium includes a fluoroplastic porous membrane and an air permeable support material laminated on at least one surface of the fluoroplastic porous membrane, and the air permeable support material comprises a blended nonwoven fabric containing a core-sheath fiber (A) using polyester in its core and polyolefin in its sheath, a polyester fiber (B) and a core sheath fiber (C) using polyester in its core and copolymerized polyester in its sheath.
Abstract:
PROBLEM TO BE SOLVED: To provide a sheet material that has, at a given basis weight, strength and barrier properties at least equivalent to those of a Tyvek spun bonded olefin nonwoven fabric currently used for protective clothing, has largely improved breathability to enhance thermal comfortableness of protective clothing obtained from this material and is suitably used for protective clothing.SOLUTION: The present invention relates to an improved plexifilamentary sheet material useful for protective clothing and a filtration medium that includes substantially continuous plexifilamentary fiber strands and has Frazier permeability of at least 2 cfm/ftnormalized to 1.0 oz/ydbasis weight.
Abstract translation:要解决的问题:为了提供具有至少相当于目前用于防护服的Tyvek纺粘粘合烯烃无纺布的强度和阻隔性能的给定基重的片材材料已经大大改善了透气性, 提高从该材料获得的防护服的热舒适性,适用于防护服。 解决方案:本发明涉及一种用于防护服的改进的丛状纤维片材料和包括基本上连续的丛状纤维束的过滤介质,并且具有至少2cf / ft 2的Frazier渗透性 SP>标准化为1.0 oz / yd 2 SP>基重。 版权所有(C)2013,JPO&INPIT