Chisso Corporation

Masayasu Suzuki

Masaru Nishijima

Hirokazu Terada

Mitsuru Kojima

Toshihiko Tsutsui

Koji Minamoto

Kazuyuki Sakamoto

Sei Ishizawa

Satoshi Ogata

Masahiko Taniguchi

Taizo Sugihara

Yuji Nakajima

Yukinori Kataoka

Masahito Katsuya

Kozo Tanoue

Yukinori Takaoka

Hisanobu Kuroda

The present invention relates to a splittable multi-component fiber of good splittability, a method for producing it, and a fibrous article comprising it. More precisely, the invention relates to a splittable multi-component fiber of good splittability favorable for use in the field of industrial materials for battery separators, wipers, filters, etc., and also in the field of sanitary materials for napkin, etc. and relates to a method for producing it, and a fibrous article comprising it.

Splittable multi-component fiber, method for producing it, and fibrous article comprising it

The invention is directed to a split conjugated fiber.

Split type conjugate fiber, method for producing the same and fiber formed article using the same

A polyethylene fiber having a high apparent Young's modulus, high breaking tensile strength and low breaking elongation. The fiber also exhibits residual percentage crimp suitable enough for carding, so that the cardability, which has been conventionally difficult to improve, can be remarkably increased. Further, the fiber can be formed into a non-woven fabric having a soft touch feeling such that the fabric is suitable for medical use as well as hygienic use. In addition, the polyethylene fiber of this invention can be mixed with other fibers such as cellulose fiber to obtain a high absorbent fiber network material.

Polyethylene fiber and a non-woven fabric using the same

The invention is directed to a crimpable composite fiber having a propylene copolymer is the first component and a polyethylene as the second component.

Potentially crimpable composite fiber and a non-woven fabric using the same

Hydrophilic fibers and cloth-like articles and filters made by using the same

The present invention provides a durable hydrophilic fiber and fabric using said fiber having superior durable hydrophilicity being able to utilize preferably in the medical or hygienic material sections. The durable hydrophilic fiber of the invention can be obtained by applying 0.2 to 1.5% by weight of a fiber treating agent to a thermoplastic fiber based on the thermoplastic fiber. The fiber treating agent contains at least 40% by weight of a mixture comprising 80 to 20% by weight of (A) betaine ampho-ionic surface active agent and 20 to 80% by weight of (B) di-carboxylic acid ester compound from polyalkylene adduct of hydroxy-fatty acid ester.

Durable hydrophilic fiber and fabric using the same

Heat-fusible composite fiber and non-woven fabric produced from the same

Melt-adhesive composite fibers; non-woven fabrics from the composite fibers fused at intersectional points of the fibers; and surface materials for medical supplies such as sanitary napkins and paper diapers are disclosed. The composite fibers have a polypropylene as the first component and a polymer mainly composed of a polyethylene as the second component which is continuously present on at least a part of the fiber surface in the lengthwise direction of the fiber; have three-dimensional crimps of 4 to 16/inch; have a filamentary denier of 1.0 to 2.0, and have an apparent cut length of 20 to 40 mm. The composite fibers can be produced by extruding a polypropylene and a polymer mainly comprising a polyethylene through a spinneret for composite spinning to form unstretched composite filaments having such structure as mentioned above, stretching the unstretched composite filaments at a temperature of higher than 90.degree. C., but lower than 130.degree. C. at a stretching ratio of 0.60 to 0.85 time the maximum stretching ratio, cooling the stretched filaments to a temperature lower than a preheating temperature, subjecting the filaments to a crimping treatment, and subjecting the filaments to an annealing at a temperature of higher than 80.degree. C., but lower than 120.degree. C.

Melt-adhesive composite fibers, process for producing the same, and

Highly smooth fiber, fabric, and formed article

The present invention aims to provide a low tecmperture adhesive fiber, and nonwovens made of the fiber having high strength and soft feeling in spite of produced by heat treatment at a low temperature and a high-speed, and having strong adhesion with a hot melt adhesive, and an article having water absorption properties and being made of the nonwovens. A low-temperature adhesive fiber, characterized in that a textile oil of 0.1-2.0% by weight per fiber, which comprises the following surfactant composition of 5-15% by weight of the following component (A), 5-45 % by weight of the following component (B) and 40-90% by weight of the following component (C), is adhered to a conjugate fiber of polyolefins having a core component of polypropylene and a sheath component of a bipolymer or terpolymer of olefins principally containing propylene:

Low temperature adhesive fiber and nonwovens made of the fiber

A non-woven fabric comprising thermally fusible composite fibers with shortened heat-sealing time and improved heat-sealing strength is provided. The non-woven fabric is produced using side-by-side type or sheath-and-core type thermally fusible composite fibers comprising a first component consisting of polyethylene and a second component consisting of polyester, said polyethylene occupying continuously at least a portion of the surface of the fiber in the length direction, wherein said polyethylene is a copolymer having 1.6/1,000 C or more methyl branches in its molecular chains, a density from 0.940 to 0.965 g/cm.sup.3, and a Q value (weight average molecular weight Mw/number average molecular weight Mn) of 4.8 or less.

Thermally fusible composite fiber and non-woven fabric made of the same

Melt-adhesive composite fibers; non-woven fabrics from the composite fibers fused at intersectional points of the fibers; and surface materials for medical supplies such as sanitary napkins and paper diapers are disclosed. The composite fibers have a polypropylene as the first component and a polymer mainly composed of a polyethylene as the second component which is continuously present on at least a part of the fiber surface in the lengthwise direction of the fiber; have three-dimensional crimps of 4 to 16/inch; have a filamentary denier of 1.0 to 2.0, and have an apparent cut length of 20 to 40 mm. The composite fibers can be produced by extruding a polypropylene and a polymer mainly comprising a polyethylene through a spinneret for composite spinning to form unstretched composite filaments having such structure as mentioned above, stretching the unstretched composite filaments at a temperature of higher than 90.degree. C., but lower than 130.degree. C. at a stretching ratio of 0.60 to 0.85 time the maximum stretching ratio, cooling the stretched filaments to a temperature lower than a preheating temperature, subjecting the filaments to a crimping treatment, and subjecting the filaments to an annealing at a temperature of higher than 80 .degree. C., but lower than 120.degree. C.

A high water-repellent fiber comprising a thermoplastic resin, wherein the following components (A) 75-90% by weight, (B) 5-20% by weight and (C) 1-5% by weight are adhered on the fiber 0.1-1.0% by weight per fiber:

High water-repellent fiber and nonwoven

A non-woven fabric comprising thermally fusible composite fibers with shortened heat-sealing time and improved heat-sealing strength is provided. The non-woven fabric is produced using side-by-side type or sheath-and-core type thermally fusible composite fibers comprising a first component consisting of polyethylene and a second component consisting of polyester, said polyethylene Occupying continuously at least a portion of the surface of the fiber in the length direction, wherein said polyethylene is a copolymer having 1.6/1,000 C or more methyl branches in its molecular chains, a density from 0.940 to 0.965 g/cm.sup.3, and a Q value (weight average molecular weight Mw/number average molecular weight Mn) of 4.8 or less.

Improvement in a hydrophilic function and in the strength of a cloth article obtained from a durable hydrophilic fibers is attained by the employment a durable hydrophilic fiber consisting of a fiber made of a thermoplastic resin to which 0.2 to 1.0% by weight of a mixture formed of the following surfactant (A),(B), (C), (D) and (E) is adhered:

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Shiga, Japan

Masayasu Suzuki