A protective textile sleeve and method of construction thereof is provided. The sleeve includes a circumferentially continuous wall extending lengthwise along a longitudinal axis between opposite ends. The wall has a first section formed from a non-heat-shrinkable, non-elastic yarn and a second section formed from one of a heat-shrinkable or elastic yarn. The first section extends lengthwise between the opposite ends and spans (X) degrees about the circumference of the wall between opposite lengthwise extending edges while in an unshrunken or stretch. The second section extends lengthwise between the opposite ends and spans (360-X) degrees about the circumference of the wall. The heat-shrikable or elastic yarn of the second section extends continuously as an uninterupted yarn between the opposite edges of the first section.

A method of generating a coiled actuator fiber that includes twisting a fiber to generate a twisted fiber; wrapping the twisted fiber around a core yarn or fiber to generate a coil in the twisted fiber, which generates a coiled twisted fiber; setting the coiled twisted fiber by heat or chemical treatment; and removing at least a portion of the core yarn or fiber to generate a coiled actuator fiber.

The improved multifilament structure is a low denier, heat treated multifilament structure that provides for advantageous mechanical properties, including fray resistance, low shrinkage, high tensile strength and low elongation.

A stretch yarn includes a multifilament including fibers having a coiled crimping form in a fiber axial direction, wherein a coil diameter distribution of crimping in the fiber has two or more groups, a ratio of a maximum group average value to a minimum group average value of the coil diameter (a maximum group average value/a minimum group average value) is less than 3.00, and a cross section of the fibers constituting the multifilament is an eccentric core-sheath cross section.

A protective textile sleeve and method of construction thereof is provided. The sleeve includes a circumferentially continuous wall extending lengthwise along a longitudinal axis between opposite ends. The wall has a first section formed from a non-heat-shrinkable, non-elastic yarn and a second section formed from one of a heat-shrinkable or elastic yarn. The first section extends lengthwise between the opposite ends and spans (X) degrees about the circumference of the wall between opposite lengthwise extending edges while in an unshrunken or stretch. The second section extends lengthwise between the opposite ends and spans (360-X) degrees about the circumference of the wall. The heat-shrikable or elastic yarn of the second section extends continuously as an uninterupted yarn between the opposite edges of the first section.

The invention discloses a twisted yarn, a twisted yarn production device and a twisted yarn production process. The twisted yarn is obtained from an air-covered yarn and a core-spun spandex yarn through doubling, twisting and winding. Compared with the prior art, the invention utilizes the feature that the air-covered yarn has rhythmic network points. After the air-covered yarn and the core-spun spandex yarn are made into a twisted yarn, the air-covered yarn can clamp the core-spun spandex yarn, thereby effectively preventing the retraction of the spandex in the core-spun spandex yarn.

Disclosed is a method of producing a variable-color textile, the method comprising: providing a plurality of filaments into a commercial textile-production machine, the plurality filaments having at least a first color and a second color; and twisting at least one of the plurality of filaments to display a first color on a first side of a fabric surface and a second color on an opposite side of the fabric surface.

A method of generating a coiled actuator fiber that includes twisting a fiber to generate a twisted fiber; wrapping the twisted fiber around a core yarn or fiber to generate a coil in the twisted fiber, which generates a coiled twisted fiber; setting the coiled twisted fiber by heat or chemical treatment; and removing at least a portion of the core yarn or fiber to generate a coiled actuator fiber.

A yarn containing a core of continuous filaments of an inorganic material and a sheath of staple fibers of a thermoplastic polymer is provided. The yarn can be formed into a fabric or unidirectional tape, which can then be heated under pressure to form a composite material that has excellent mechanical strength yet is lightweight. The fabric can be molded into a composite material having a two-dimensional or three-dimensional shape because of its excellent drapability. The composite material can be used in aircraft parts, automotive parts, marine parts, consumer electronic parts, and other products.

A system and method of generating a coiled actuator fiber. The method includes twisting a fiber to generate a twisted fiber, wrapping the twisted fiber around a core to generate a coil in the twisted fiber; and removing at least a portion of the core to generate a coiled actuator fiber. In some aspects that fiber can be a yarn with one or more fibers or a fiber comprising a single elongated element. In some aspects, a portion of the core includes a removable sacrificial portion. The removable sacrificial portion can be dissolvable in a solvent or physically removable. In some aspects, the core further includes a non-dissolvable portion that is not dissolvable and generating a coiled actuator can include removing the sacrificial portion by treating a twisted fiber on the core to remove the sacrificial portion and leaving the non-dissolvable portion.