JPS5988940A - Heat resistant cored spun yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in a heat-reducing cored spun yarn.

Previously, 16 and 11 people applied for heat-resistant cored spun yarn (
Japanese Patent Application No. 154260/1986) discloses that carbon fibers mainly made of acrylic carbon fibers, i.e., fibrillar carbon fibers having spinnability, are coated in an oven around a reinforcing core thread of filamentary heat-resistant fibers such as glass fibers. It is coated and heated using an end spinning machine.

However, although the acrylic and other raw material carbon fibers used are spinnable and relatively inexpensive, they are more heat resistant than other non-fiber raw material heat resistant fibers such as pitch carbon fibers and ceramic heat resistant fibers. However, the disadvantage is that it has poor chemical resistance.

However, these heat-resistant fibers made from non-fiber raw materials have excellent heat resistance, but poor spinnability, and there are spots around the filament-like core yarn that are smooth on the surface when used alone, making it difficult to spin.

The object of the present invention is to solve the problems described in C4 and tJiJ.

In other words, this invention C" is a material that is relatively inexpensive, has air permeability, is thick, lightweight, and has excellent heat resistance by spinning and laminating heat-resistant fibers in a non-fiber raw material chamber through a carbon fiber layer that is a fiber raw material with excellent spinnability. This is a heat-resistant cored spun yarn that makes it possible to obtain heat-resistant textiles that have chemical resistance.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Heat-resistant cored spun yarn AC of this invention, No. 1
As shown in FIG. 2 and FIG.
The heat-resistant coating layer is a two-layer laminate of an inner layer 2 and an outer layer 3, and for the inner layer 2, for example, a 1-fiber staple of acrylic or other fiber material carbon fiber with a fineness of 1.9 denier and a fiber length of 2 [J'' is used,
For the outer layer 3, a pitch-based carbon knit with approximately the same fineness and fiber length and a heat-resistant fiber stable made of a non-fiber raw material such as fiber is used. Completely cover the core yarn 1 by heating f
: It is a large type with a size of 3.5 to 5.0.

The heat-resistant roux spun yarn A uses fiber raw material carbon fiber stable for the inner layer 2 and non-fiber raw material heat-resistant fiber staple for the outer layer 3. The fiber material carbon fiber staple can be used for the outer layer 3, and the cotton matrix for the inner layer 2 and the outer layer 3 can be selected as appropriate.

For the core thread 1, a filament thread with high tensile strength is used, and in addition to glass fibers, ceramic fibers, metal fibers such as stainless steel, heat-resistant synthetic fibers, fibers, etc. are used.

The above-mentioned fiber raw material carbon fiber stable is a heat-resistant material obtained by firing and carbonizing acrylic fibers and cellulose fibers at a relatively low temperature of 200'C to 500°C, and has a moderate amount of crimp and is excellent in being spinnable. As a result, a fluffy, air-containing, heat-resistant fiber layer is created around the filament-like core yarn 1, which has a smooth surface, and is similar in appearance to ordinary spun yarn.

The non-fiber raw material heat-resistant fiber staple uses pitch-based carbon fiber or ceramic-based heat-resistant fiber made from pitch produced as a by-product when cracking crude oil,
Due to the entanglement of acrylic and cellulose-based carbon fibers, which have excellent spinnability, it is possible to easily spin a high-quality spun yarn without yarn irregularities.

The heat-resistant cored spun yarn A has, depending on the application, the base side and fineness of the core yarn 1, the fineness and fiber length of the fiber raw material carbon fiber stable and the non-fiber raw material heat-resistant fiber stable, the spinning count,
The number of twists, etc. can be selected as appropriate.

The heat-resistant cored spun yarn A according to the present invention has the above-mentioned structure, and when used, it can be used in a plain weave structure, etc., as shown in FIG. This base fabric can be woven into a heat-resistant fabric B or knitted into a cylindrical set (not shown), and this base fabric can be cut and sewn to produce, for example, heat-resistant curtain materials, gaskets iA, backing materials, heat/cold insulation, etc. Heat-insulating side, flame-retardant work clothes, fire-retardant flower apron, gloves, belt conveyor for high i'f + l Products can be created by sewing.

As described above, the heat-resistant cored spun yarn of the present invention has excellent durability because glass fibers, metal fibers, etc. are used as the reinforcing core yarn. Knitted fabrics are lighter than conventional asbestos textiles and can be used as an alternative for this purpose, and are extremely useful for new heat-resistant, heat-retaining, cold-insulating, and heat-insulating purposes. This woven and knitted fabric uses a mixture of non-fibrous materials such as heat-resistant bran and fibers, which are difficult to spin but have excellent heat-resistant properties. Compared to knitting,
It is not expensive and has excellent heat resistance, chemical resistance, flame resistance, etc., depending on the application.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal side view showing an embodiment of the present invention;
・Figure 2 is an enlarged cross-sectional view taken along line I-I in Figure 1.
The figure is a plan view showing one usage example of the same as above. 1... Core thread, 2... Inner layer, 3... Outer layer, A...
Heat-resistant cored spun yarn, ■3...Heat-resistant textile patent applicant Mikasa Giken Kogyo Co., Ltd. Agent U Kama 2

Claims (1)

[Claims] Heat-resistant cored spun yarn is made by using a heat-resistant fiber such as glass fiber as a core yarn, and heat-resistant carbon fiber stable is coated and heated around the core yarn. An outer two-layer lamination consisting of a carbon fiber layer made of a fibrous material such as cellulose, and a heat-resistant fiber layer made of a non-fibrous iK material such as pitch-based carbon fiber, ceramic-based abrasive paste, fiber, etc. Features include heat resistance and spun yarn.