NONWOVEN MATERIAL BASED ON POLYMERS CONTAINING SPECIFIC TYPES OF COPOLYMERS AND HAVING ESTHETICALLY AGREEABLE TACTILE PROPERTIES Russian patent published in 2000 - IPC

FIELD: polymer materials. SUBSTANCE: invention mainly concentrates on fibers from thermoplastic polymers that are used in personal hygiene products and medicinal-destination products as well as in fabrics operated under unfavorable conditions. Fiber-forming polymer is selected from group including: polypropylene/ethylene copolymer with amount of ethylene, more than 5 and up to 7.5 wt. %; polypropylene/1- butene with 1-15.4% 1-butene; polypropylene/1-hexene copolymer with 2-5% 1-hexene; propylene/ethylene/butene terpolymer with 90-98% propylene, 1-6% ethylene, and 1-6% butene. Polymer of invention imparts value of cup-crushing energy to nonwoven material by at least 25% less than in similar nonwoven material manufactured with no use of polymer of invention (improving tactile properties). In one of embodiments, nonwoven material is manufactured from fibers formed from melt or from overblown melt. In another embodiment, nonwoven material manufactured from fibers possesses base weight within a range between ca. 9 to 119 g/sq.m. Nonwoven lined material containing nonwoven material as the first layer represents a material manufactured by fastening fibers formed from melt, the second layer being made similarly from polypropylene fibers. EFFECT: improved tactile properties of material. 18 cl, 4 tbl