SHEATH-CORE TYPE CONJUGATED FIBER AND FIBER STRUCTURE COMPRISING THE FIBERS AND METHOD FOR PRODUCING THE SAME

• Main Authors: KAWAI KIYOSHI, OCHI MASAKAZU, YOSHIDA TETSUHIRO
• Format: Patent
• Language: English
• Published: 14.10.2004
• Edition: 7
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; LOOMS; METHODS OF WEAVING; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; WEAVING; WOVEN FABRICS

PROBLEM TO BE SOLVED: To provide a sheath-core type conjugated fiber which has excellent amenity, excellent heat insulating property, excellent lightweight touch, and a characteristic soft (comfortable) and moist texture, to provide a fiber structure comprising the fibers, to provide a method for producing the fiber structure which is friendly for the environment and can easily be formed in a hollow shape. SOLUTION: This sheath-core type conjugated fiber comprising at least two components of a biodegradable polymer as the core component A and a polyamide polymer as the sheath component B is characterized by adhering a silicone component to the fibers in an amount of ≥0.01 wt. % based on the weight of the fibers and satisfying the following fiber physical properties (1) to (5). (1) The fineness of the single fiber is 0.9 to 11.0 dtex. (2) The number of crimps is 5 to 25 mountains / 25 mm. (3) The crimping degree is 5 to 30 %. (4) Dry strength is 0.5 to 10.0 cN/dtex. (5) Dry elongation is 15 to 100 %. COPYRIGHT: (C)2005,JPO&NCIPI