Abstract: The present invention provides a thermal bonding conjugate fiber with excellent compression resistance and nonwoven fabric using the same. More specifically, the present invention provides a thermal bonding conjugate fiber and nonwoven fabric using the same, in which the bulkiness of the nonwoven fabric under a light load is retained well even under a heavy load, and the rate of decrease in bulkiness between under a light load and under a heavy load can be reduced. The thermal bonding conjugate fiber with thermal shrinkage properties has an eccentric core-sheath structure in which a first component comprising a polyester resin constitutes a core and a second component comprising a polyolefin resin having a melting point at least 15° C. lower than a melting point of the polyester resin constitutes a sheath, and a shrinkage ratio after a heat treatment of 120° C. is at least 20% when calculated by a predetermined measurement method.

Abstract: An object of the present invention is to provide an antiviral fiber assembly in which an antiviral agent is retained with chemical stability over a long period of time, and which is gentle to the human body. A further object of the present invention is to provide a fiber assembly with cellulose sulfate that can exhibit sufficient antiviral activity over a long period of time. Further, another object of the present invention is to provide a textile product obtained using such a fiber assembly. The present invention provides a fiber assembly with cellulose sulfate, wherein the hyaluronidase inhibitory activity is 50% or higher; and a process for producing a fiber assembly with cellulose sulfate, including treating a fiber assembly with an aqueous cellulose sulfate solution and drying, then treating the same with a pH buffer solution and drying.

Abstract: The present invention provides a fiber that can exhibit both excellent antistatic properties and high water repellency, and a high bulk nonwoven fabric with a good texture that exhibits high water repellency. More specifically, the present invention is a highly water repellent fiber that is a conjugate fiber having a plurality of thermoplastic resins as the primary component thereof and having a fiber treatment agent comprising at least Component (A) and Component (B) below deposited thereon at 0.1 to 1.0 wt % in relation to the weight of the fiber, with Component (A) accounting for 75 to 97 wt % and Component (B) accounting for 25 to 3 wt % of the fiber treatment agent: Component (A): polysiloxane Component (B): alkane sulfonate metal salt.

Abstract: A thermal bonding conjugate fiber constituted from a first component comprising a polyester resin and a second component comprising a polyolefin resin with a melting point lower than that of the polyester resin by not less than 20° C., characterized in that a post-heat treatment bulk retention rate thereof is 20% or more when calculated by the following measurement method: Bulk retention rate=(H1 (mm)/H0 (mm))×100(%) (wherein H0 is the web height when a 0.1 g/cm2 load is applied to a web with a mass per unit area of 200 g/m2; and H1 is the web height after a heat treatment for 5 min at 145° C. when a 0.1 g/cm2 load is applied to that web).

Abstract: A fiber bundle is provided that strikes an excellent balance among the properties and performance of the web and articles manufactured using this web, the productivity, proccessability, and cost. The fiber bundle comprising continuous fibers aligned in one direction is characterized in that the continuous fibers have crimps that form peaks and valleys in the width direction of the fiber bundle, and these crimps have a characteristic value A, defined as the absolute value of a slope with respect to the length direction of the fiber bundle of a straight line that connects the vertex of the peak with the vertex of the valley of adjacent crimps present in a single continuous fiber, of at least 0.3.

Abstract: Provided is a conjugate fiber for air-laid nonwoven fabric manufacture having a planar zig-zag crimp shape before a thermal treatment, such that a uniform web is obtained by air laying with high processability and productivity, and the conjugate fiber develops a spiral crimp when the web is subjected to a thermal treatment to thereby enable the web to shrink significantly, as a result of which a nonwoven fabric can be obtained in which fibers are amassed to a high density. The conjugate fiber for air-laid nonwoven fabric manufacture is a heat-fusible conjugate fiber in which a first component comprising an olefinic thermoplastic resin is conjugated with a second component comprising an olefinic thermoplastic resin having a melting point higher than that of the first component.

Abstract: To obtain an ultrafine heat-shrinkable conjugate fiber at high productivity, in which a flow-drawing state of a polyester undrawn yarn is realized easily and stably. By drawing undrawn yarn comprising a conjugated polyester polymer and olefin polymer, a flow-drawing process can be easily and stably realized using conventional production facilities; and the heat-shrinkable fiber, a drawn intermediate, and an ultrafine hot-melt adhesive conjugate fiber produced by redrawing the drawn intermediate of the present invention can be obtained with high productivity and excellent runnability. More specifically, the ultrafine hot-melt adhesive conjugate fiber obtained by redrawing can be drawn at a heretofore unseen high drawing magnification, and the fiber structure of the olefin polymer constituting part of the conjugate fiber is markedly developed.

Abstract: To provide a conjugate fiber that demonstrates low-temperature processability and excellent thermal adhesiveness without shrinking significantly, can be processed with excellent card passability when processed into a nonwoven fabric, and can produce a bulky nonwoven fabric having excellent uniformity. Bulky nonwoven fabric and a formed article having excellent low-temperature processability and excellent feeling are also provided. A conjugate fiber in which a first component that contains at least 75% by weight of an ethylene ?-olefin copolymer having a melting point of 70 to 100° C.

Abstract: To provide an add-in material to be added to a porous molded body base, the add-in material being capable of developing a pore of appropriate size efficiently without degrading the formability and productivity of a porous molded body, particularly a porous fired body when producing the porous molded body. A shrinkable fiber composed of a thermoplastic resin and to be dispersed in a base of a porous molded body, particularly a porous fired body, wherein the shrinkable fiber has a fiber diameter of 10 to 40 ?m, a fiber length of 1 to 20 mm, and a dry-heat shrinkage percentage of at least 8% when subjected to heat treatment at 80° C. for 5 minutes.

Abstract: A splittable conjugate fiber comprising a polyester segment and a polyolefin segment, wherein the splittable conjugate fiber comprises two or more parts of the polyester segment extending from a center of the fiber toward an outer edge of the fiber in a cross-sectional configuration perpendicular to its longitudinal direction, in which at least one of the two or more parts of the polyester segment extending from the center of the fiber toward the outer edge of the fiber is exposed at the outer edge of the fiber and at least one of the two or more parts of the polyester segment extending from the center of the fiber toward the outer edge of the fiber is unexposed at the outer edge of the fiber.

Abstract: A thermal bonding conjugate fiber constituted from a first component comprising a polyester resin and a second component comprising a polyolefin resin with a melting point lower than that of the polyester resin by not less than 20° C., characterized in that a post-heat treatment bulk retention rate thereof is 20% or more when calculated by the following measurement method: Bulk retention rate=(H1 (mm)2/H0 (mm))×100 (%) (wherein H0 is the web height when a 0.1 g/cm2 load is applied to a web with a mass per unit area of 200 g/m2; and H1 is the web height after a heat treatment for 5 min at 145° C. when a 0.1 g/cm2 load is applied to that web).

Abstract: There is provided an antibacterial and deodorant fiber that exhibits excellent inhibition of bacterial growth, is capable of responding to a wide variety of odorants, does not discolor easily, and can maintain stable performance. An antibacterial and deodorant fiber characterized in that a fiber treatment agent comprising at least a component (A), and a component (B) and/or a component (C) below are attached thereto at 0.2 to 5 wt % of the total weight of the fiber, the fiber treatment agent containing 20 to 80 wt % of the component (A), and 80 to 20 wt % of the component (B) and/or the component (C): (A) at least one plant extract, said plant being at least one selected from the group consisting of tea leaves, aloe, bamboo, bamboo grass, Japanese butterbur (Petasites japonica), loofa (Luffa cylindrica), horsetail (Equisetum arvense), Japanese mugwort (Artemisia princeps), geranium (Geranium nepalense var.

Abstract: The invention provides a splittable conjugate fiber excellent in splittability and chemical resistance. The invention also provides a fibrous form and product comprising the fiber with satisfactory productivity. A splittable conjugate fiber comprising a polyacetal and a polyolefin (e.g., polypropylene, polyethylene or the like), wherein the polyacetal satisfies the following numerical expression: Tc?=144° C. [wherein Tc? represents the crystallization temperature Tc (° C.) when cooling the polyacetal melted at 210° C. at a cooling rate of 10° C./min].

Abstract: There is provided a fiber for a wetlaid non-woven fabric, said fiber can be the basis ingredient of a paper that maintains uniform mass per unit area and fiber dispersion and has unprecedented bulkiness. The fiber for a wetlaid non-woven fabric has 30 to 100 wt % of apparently crimping fibers with a fiber diameter of from 3 to 40 ?m and 0 to 70 wt % of latently crimping fibers with a fiber diameter of from 3 to 40 ?m.

Abstract: There is provided a fiber bundle that strikes an excellent balance between the properties and performance of the resulting web and the finished products obtained from this web, and cost, ease of work, and productivity. There is also provided a method for manufacturing a web using this fiber bundle. There is also provided a web that is uniform and has excellent soft touch and bulkiness. This is achieved by a fiber bundle with a total denier of 10,000 to 500,000 dtex, obtained by bundling thermoplastic, conjugate, continuous fibers that have a single filament denier of 0.5 to 100 dtex/f and in which the center of gravity of conjugate components varies among the conjugate components in a fiber cross section, wherein the thermoplastic, conjugate, continuous fibers that make up the fiber bundle have a spontaneous crimp of 8 to 30 crimps per 2.