BASE MATERIAL FOR ARTIFICIAL LEATHER AND PROCESS FOR PRODUCING THE SAME

• Main Authors: FUJISAWA MICHINORI, MAKIYAMA NORIO, TANAKA JIRO, NOBUTO YOSHIKI, ANDO YOSHIYUKI
• Format: Patent
• Language: English; Korean
• Published: 27.05.2015
• Subjects: BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; KNITTING; LACE-MAKING; LAUNDERING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; SPINNING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TRIMMINGS; WADDING; WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL

극세 장섬유속의 부직포 구조체로 이루어지는 인공 피혁용 기재. 상기 인공 피혁용 기재는 하기 (1) ∼ (4) 의 조건 : (1) 극세 장섬유속이 단면 형상이 대략 원형인 극세 장섬유가 8 ∼ 70 개 집속된 것인 것, (2) 극세 장섬유속이 단면적 170 ∼ 700 ㎛, 편평률 4.0 이하인 것, (3) 부직포 구조체의 두께 방향과 평행한 임의의 단면에 있어서, 극세 장섬유속의 단면이 1500 ∼ 3000 개/㎟ 의 범위에서 존재하고 있는 것, 및 (4) 부직포 구조체의 두께 방향과 평행한 임의의 단면에 있어서, 극세 섬유속 간의 공극 사이즈가 70 ㎛ 이하인 것을 동시에 만족한다. 상기 조건을 만족하므로, 그 인공 피혁용 기재는 종래에는 상반되는 성능인 것으로 인식되어 온 감성면의 성능과 물성면에서의 성능을 모두 높은 레벨로 겸비한다. A substrate for artificial leather comprising a nonwoven fabric of bundles of microfine filaments. The substrate for artificial leather simultaneously satisfies the following requirements 1 to 4: (1) the bundle of microfine filaments comprises 8 to 70 microfine filaments having a cross-sectional shape of nearly circle; (2) the bundle of microfine filaments has a cross-sectional area of 170 to 700 µm 2 and a flatness of 4.0 or less; (3) on a cross section parallel to a thickness direction of the nonwoven fabric body, cross sections of the microfine fiber bundles exist in a density of 1500 to 3000/mm 2 ; and (4) on a cross section parallel to a thickness direction of the nonwoven fabric body, gaps between the microfine fiber bundles have a size of 70 µm or less. By satisfying the requirements, the substrate for artificial leather combines high level of sensuous qualities and high level of physical properties which have been considered to be mutually exclusive.