Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof are described. In one embodiment, a multi-component fiber includes a fiber body formed from a set of elongated members, and at least one of the set of elongated members includes a temperature regulating material having a latent heat of at least 40 J/g and a transition temperature in the range of 22° C. to 40° C. The temperature regulating material provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature. The multi-component fiber can be formed via a melt spinning process or a solution spinning process and can be used or incorporated in various products where a thermal regulating property is desired. For example, the multi-component fiber can be used in textiles, apparel, footwear, medical products, containers and packagings, buildings, appliances, and other products.

Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof

A viscose fiber comprises a fiber body including a regenerated cellulosic material and a plurality of microcapsules dispersed in the regenerated cellulosic material. The regenerated cellulosic material is derived from an organic plant material and the plurality of microcapsules containing a phase change material has a transition temperature in the range of 0° C. to 100° C., the phase change material providing thermal regulation based on at least one of absorption and release of latent heat at the transition temperature.

Cellulosic Fibers Having Enhanced Reversible Thermal Properties and Methods of Forming Thereof

The present invention relations to laser-markable plastics, especially thermoplastic polyurethanes, containing pigments having a layer of doped stannic oxide.

Laser-markable plastics

A process for manufacturing extrudable/melt spinnable concentrate pellets which contain phase change materials (PCMs), whether the PCMs are micro-encapsulated absorbed into carrier polymers, or non-micro-encapsulated within the concentrate pellets The polymer matrix within the concentrate pellets can be any thermoplastic polymer or combination of thermoplastic polymers, and the concentrate pellets can then be blended into similar thermoplastic polymers to form mono-filament melt spun fibers, extruded films, injection molded products, etc, or the concentrate pellets can be blended with other thermoplastic polymers to form bi-component or multi-component melt spun fibers, extruded films, injection molded products, etc

Melt spinable concentrate pellets having enhanced reversible thermal properties

The present invention is directed to a textile fabric (10). This fabric is particularly well suited for use as the outer shell fabric of spun yarns (12) and multi-filament yarns (14). The spun yarn (12) includes a first staple being a polymer selected from the group consisting of PBI or PBO or melamine formaldehyde, and a second staple being an aramid filament.

Textile fabric for the outer shell of a firefighter's garment

PURPOSE:To obtain elastic woven fabric having high extensibility and high recovery of extensibility by weaving yarn using latently crimping conjugate type polyester yarn capable of developing specific crimping performance as warp and/or weft and weaving. CONSTITUTION:Multifilament or yarn such as spun yarn comprising latently crimping conjugate polyester yarn developing crimp such as spiral crimp caused by difference in boil water shrinkage between a first component having crimping performance having >=70% modulus of elasticity and >=50% crimp ratio 30 minutes after boiling water treatment and a second component is formed. The yarn is used as warp and/or weft and woven to give woven fabric, which is subjected to 5-40% alkali weight loss treatment, dyed and finished under a condition of providing wet heat at 100 deg.C for >=30 minutes and crimp having the crimping performance is developed in the latently crimping conjugate type polyester yarn constituting the woven fabric to supply the woven fabric with elasticity.

Production of elastic woven fabric

PURPOSE:To obtain a white fiber resistant to resoiling in washing and having excellent heat-insulation by using a fiber-forming polymer containing white fine particles capable of absorbing energy and emitting far infrared radiation as a core component and a fiber-forming polymer containing a fluorescent brightener as a sheath component CONSTITUTION:The objective white fiber is produced by the core-sheath conjugation of (A) a core component composed of a fiber-forming polymer (eg polyester) compounded with preferably 1-7wt% of white fine particles capable of absorbing light energy and emitting far infrared radiation (eg stannic oxide doped with antimony oxide) and (B) a sheath component composed of a fiber- forming polymer (preferably same as the polymer of the core component) compounded with preferably 001-03wt% of a fluorescent brightener (preferably oxazole-type fluorescent brightener) A cloth suitable for sports wear, etc, is produced by using the fiber as at least a part of the cloth

White fiber and cloth

PROBLEM TO BE SOLVED: To provide a method for producing a highly dense woven fabric having an excellent tear strength and water repellency. SOLUTION: This highly dense woven fabric is produced by using multifilament yarns comprising ultrafine synthetic filaments having a single filament fineness of <=0.5 d as warps and wefts, forming ripstop portions constituting checkered cloth portions in a twice or more total fineness that of ground yarns, dividing the warps of the ripstop portions with dents on reeding, reeding the larger number of the warps in the ripstop portions than the number of the ground yarns, weaving the warps with the wefts, and subsequently subjecting the woven fabric to a water-repelling treatment and a calendering treatment.

Production of woven fabric having high density

PROBLEM TO BE SOLVED: To obtain a high-density woven fabric excellent in durability to washing and having waterproofness by carrying out water-repellent finishing and calendering of a woven fabric obtained by weaving ultrafine fiber yarns arranged as warp and weft so as to have a specific value or above of covering factor. SOLUTION: A polyester ultrafine fiber multifilament yarns having ≤0.5 de single fiber fineness and used as weft and warp are woven into a high-density plain fabric having ≥2,200 sum of cover factor of warp and weft and 1:(0.7 to 1.4) ratio of warp density to weft density. Then, the woven fabric is immersed into a treating solution containing a fluorine-based water repellent and a melamine-based crosslinking agent and the fabric is squeezed by mangle and dried and heat-treated to carry out water-repellent finishing and subjected to calendering treatment at 130-190°C under 5-100kg/cm 2 using a calendering machine. COPYRIGHT: (C)1997,JPO

High-density woven fabric

PROBLEM TO BE SOLVED: To provide a stretchable polyamide fabric with high flexibility, manifesting flexible properties in low stress, and having excellent liquid water absorbing and moisture-absorbing/releasing properties free from stuffy feeling and sticky feeling in wearing. SOLUTION: This fabric is a double structured fabric having concavo-convex on reverse face and the warp is obtained by twisting 3,000-15,000 count of twists to a side-by-side type or the like latently crimping polyamide filament which comprises two kind of polyamides having different viscosities, and the weft of the reverse face comprises a moisture-absorbing/releasing synthetic fiber, the fabric has >=20% of elongation rate under 4.9 N/3 cm stress and =80% of elongation recovery rate.

Abe Kazunori

Papers

Production of elastic woven fabric

White fiber and cloth

Production of woven fabric having high density

High-density woven fabric

Stretchable polyamide fabric