JPH01266274A - Endothermic cloth - Google Patents

Abstract

PURPOSE:To obtain a cloth having high endothermic properties, by adding a substance having far infrared ray absorbing ability to a cloth containing a specific amount of specific fine denier synthetic yarn and having a ratio of the yarn constituting the cloth per unit volume of >=a specific value. CONSTITUTION:A cloth which is woven and contains >=40wt.% based on the whole cloth of fine denier synthetic yarn (e.g., polyester or polyamide yarn) having <=1.5de fineness of single yarn so as to have a ratio of the yarn constituting the cloth per unit volume of >=30% is (optionally, after the following treatment, compressed by a calender, etc.) treated in a solution containing a far infrared ray absorbing solution (e.g., anthraquinone compound) having absorbing ability in 700-2,000mmu wavelength, the substance is absorbed in the cloth to give a lightweight endothermic cloth having excellent endothermic properties.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an endothermic fabric.

(Prior art) Conventionally, as a means to increase the heat retention of fabrics made of knitted fabrics, nonwoven fabrics, etc., there have been known methods such as increasing the thickness of the fabric and increasing the air content of the fabric by raising the surface of the fabric. It was getting worse. These fabrics have drawbacks such as being heavy because the fabric itself is thick, and their uses are limited. In particular, there is a limit to the use in combination with other moisture-retaining materials due to the thickness and weight of the fabric itself, and the combination is rarely used.

(Objective of the Invention) The object of the present invention is to solve the drawbacks of conventional heat-retaining fabrics, to create a heat-absorbing fabric that has high heat-absorbing properties and can be widely used in combination with other heat-retaining materials. The purpose is to propose sex fabrics.

(Structure of the Invention) The present invention is a fine denier composite with a single yarn denier of 1.5 de or less! A fabric containing 40% by weight or more of fibers based on the total weight of the fabric, where the occupancy rate per unit volume of the fibers constituting the fabric is 30% by weight of the entire fabric.
% or more contains a near-infrared absorbing substance capable of absorbing in the wavelength range of 700 millimicrons (mμ) to 2000 millimicrons (mμ).
! It is made of heat-absorbing fabric.

The synthetic fiber used in the present invention is polyester $1iiff
l.

Polyamide fiber, polypropylene! fibers, polyvinyl chloride fibers, etc. Among these synthetic fibers, bright type fibers containing inorganic substances such as titanium oxide and 5A acid Varicomb of 1% by weight or less, preferably 0.5% by weight or less are preferred.

Further, as the synthetic fiber, ultrafine fibers having a single yarn denier of 1.5 de or less, preferably 0.5 de or less are effectively used.

In the present invention, the content of the ultrafine fibers is 4% of the total fabric.
The amount used is 0% by weight or more, preferably 50% by weight or more.

Furthermore, the fabric used in the present invention is one in which the fibers constituting the fabric occupy 30% or more per unit volume. Here, the fiber occupancy rate means that the apparent volume of the fabric and its weight, the apparent weight of the fabric is g/c! i), and when the specific gravity of the fibers constituting the fabric is ρ, II fiber occupancy - [(apparent fabric is specific gravity (g/1) x 1/ρ
) ÷ Fabric apparent volume (c!ri) x 100.

A fabric having such an mta occupancy may be obtained by weaving and knitting the fabric at a high density, by subjecting the fabric to compression treatment such as heat calendering after weaving and knitting, or by a combination of both.

Next, anthoraquinone compounds, metal complex compounds, and cyanine compounds are effectively used as near-infrared absorbing substances having absorption ability in the wavelength range of 700 mμ to 2000 mμ. To incorporate such a near-infrared absorbing substance into a fabric: ■ After blending the near-infrared absorbing substance with a polymer, form it into a fiber using a conventional method, use this fiber in whole or in part, and process it using a conventional method. Obtained by weaving, knitting, dyeing and finishing as necessary ■ Obtained by treating a fabric containing ultrafine fibers in water or a solvent containing a near-infrared absorbing substance and adsorbing it; in this case, the treatment of the near-infrared absorbing substance is It may be carried out simultaneously with normal dyeing or separately before or after dyeing.■ After processing the yarn or cotton, fabric containing ultra-fine fibers is dyed and finished in the same manner as ■. This is the method of obtaining it by doing the following.

(Function of the invention) When the fabric obtained according to the present invention is used outdoors under sunlight with a lot of near-infrared rays, the temperature of the fabric surface becomes as high as the surface, so when it is used for clothing, it can be used as a warm garment. becomes.

In particular, the base fabric used in the present invention contains fine denier synthetic fibers, and the synthetic fibers occupy a large proportion of the volume. can be increased. In addition, since the amount of put air contained in the fabric is small, the effect of air insulation can be reduced, so it is effective in raising the temperature on the back side of the fabric when used under sunlight as mentioned above. be.

The fabric of the present invention can be used as a side fabric by utilizing such properties. In other words, it can be used as a side material for padded futons and as a material for padded clothing.

In this case, both the characteristics of the batting which has excellent heat retention properties and the features of the fabric of the present invention which have excellent heat absorption properties are utilized.

If it is necessary to increase the temperature of the fabric surface without reducing the heat transfer properties of the fabric, laminate the fabric surface with a transparent film or resin that has no absorption or low absorption in the near-infrared wavelength region. Or it may be coated. Or, the fabric is not only dyed normally, but also water repellent, electrically treated, etc.
There is nothing wrong with carrying out various processes such as A dyeing as necessary.

The effects of the present invention will be specifically explained below using Examples.

Example 1 Polyester processed yarn (75 denier/7
A plain woven fabric using 2 filaments, single yarn denier 1.04, titanium oxide content 0.5% by weight) was woven using a water jet loom (warp density 187/3.
79a, weft density: 140 threads/3.79α) This fabric was relaxed and scoured in a conventional manner, and then dried and set to provide a base fabric for treatment.

Next, a near-infrared absorber, IRQ 750 (700
The maximum absorption wavelength at wavelengths of millimicrons or more is 700 millimicrons, using a 30% aqueous dispersion of Nippon Kayakami Co., Ltd. (manufactured by Nippon Kayakami Co., Ltd.) at 4% of the weight of the base fabric, using a dyeing machine in the same manner as dyeing (13
0°C x 60 minutes).

After drying the obtained green fabric, it was made water repellent by a padding method with a 3% solution of a fluorine-based water repellent (Asahi Guard AG710, manufactured by Asahi Glass ■). Furthermore, a thermal calendar (1
The fabric of the present invention was obtained by compression processing at 60°C. The m-fiber occupancy (filling degree) of the fabric was 43.5%.

On the other hand, the warp and weft are made of polyester processed yarn (100 denier/48 filament, single yarn denier 2.07,
To weave a plain woven fabric using titanium oxide (mO, 5% by weight), the warp density was 127/3.79α.

Weft density 110/3,79α). This woven fabric was treated in the same manner as in the examples except for the calendering treatment to obtain Comparative Example 1, and the woven fabric used in Comparative Example 1 was replaced with IRQ-750 instead of IRQ-750.
Disperse dye that does not have a maximum absorption wavelength in the wavelength range of 00 mm to 2000 mm, Disperse Blue K (manufactured by Ciba Geigy), Dianic Sprue A
CE (manufactured by Mitsubishi Kasei), Diamond sprue-ACE
(manufactured by Mitsubishi Kasei Co., Ltd.) at 0.5%, 0.14%, and 0.24% of the weight of the fabric, respectively, and dyed to the same hue and density as the invented product, and treated to be water repellent in the same manner as in the example.

Comparative Example 2 was prepared by calendering. Comparative example 1.2
The degree of filling was 28%.

The fabrics according to the examples and comparative examples were exposed to sunlight for 20 minutes, and the fabric surface temperature during that time was measured using an II object surface temperature temperature sensor. Table 1 shows the maximum values among the measured temperatures.

As shown in Table 1, the backside temperature of the samples according to Examples was significantly high, and the heat absorption was large.

Example 2 A fabric prepared in the same manner as Example 1 and Comparative Example 1.
The fabric obtained in step 2 is used as the side fabric, and Isaac I is used as the batting.
A futon was made using P-80K (manufactured by Teijin ■).

The cotton was exposed to sunlight for 60 minutes, during which time the temperature of the batting was measured using a temperature sensor. The measured temperatures were 41°C for the example, 39°C for the comparative example 1, and 36°C for the comparative example 2, indicating that the futon using the fabric of the example had excellent heat absorption.

Claims (1)

[Claims] 700 mm for fabrics that contain 40% or more by weight of the entire fabric of fine denier synthetic fibers with a single thread denier of 1.5 de or less, and the occupancy rate per unit volume of the fibers constituting the fabric is 30% or more. An endothermic fabric characterized by containing a near-infrared absorbing substance capable of absorbing in the wavelength range from microns to 2000 millimicrons.