JP2535403B2 - Polyester fiber coated cloth - Google Patents

Description

TECHNICAL FIELD The present invention relates to a polyester fiber coated fabric having no dye migration.

[Prior Art] Currently, a commonly used coated fabric is a woven or knitted fabric mainly made of nylon fiber, for example, water-repellent / water-proof, moisture-permeable / water-repellent, breathable, flameproof / antimelting coating. Various processed products are widely used for clothing or industry.

However, in recent years, the price difference with polyester has been further widened due to soaring prices of nylon fiber raw materials. Therefore, as an alternative to nylon fiber, a polyester fiber coated cloth having superiority in characteristics such as dimensional stability, strength, light resistance, and variety of materials has been actively developed.

However, polyester fiber coated cloth is
There has been a fatal problem that the dye migrates to the coating film and causes significant contamination. The reason for this is that the fibers and dyes are not chemically bonded, such as the acid dyeing of nylon, but in the case of disperse dyeing of polyester fibers, the fiber substrate is relaxed and the dye molecules are physically It is considered that the dye in the fiber is transferred to the coating film layer by the coating process because the disperse dye has a property of being soluble and having an affinity with an organic solvent or a synthetic resin because the dye is completed by pushing it in.

Therefore, in the coated fabric, when the dark color and the light or white coating surface come into contact with each other, the dye on the dark color side easily migrates to the light or white coating surface to cause contamination. Various studies have been conducted to date on such a problem, but it is not perfect and it has not been put to practical use.

In addition, in JP-A-60-45686, aluminum,
A method has been proposed for inhibiting dyes that sublime by using fine powders of metals such as copper and silver, metal oxides such as potassium titanate, titanium dioxide, and stannic oxide and having a poor compatibility with disperse dyes. However, this method cannot completely collect all the transferred dyes, and thus cannot completely prevent contamination due to dye transfer.

Further, JP-A-58-4873 and JP-B-62-53632
In the publication, although the purpose is completely different, a fiber structure in which a water repellent having a perfluoroalkyl group is added to a fiber structure formed with a polyurethane resin film containing porous particles containing SiO ₂ as a main component. The processing method of is proposed.

However, the object of both of these inventions is to obtain a waterproof cloth having breathability and moisture permeability by using fine pores of particles in a polyurethane resin as air and steam flow paths. In a polyester fiber cloth dyed with a disperse dye, there is no recognition and consideration to suppress the migration / contamination of the easily transferred disperse dye from the cloth surface to another cloth surface, and there is no anti-staining effect. .

[Problems to be Solved by the Invention] As a result of intensive studies to solve the above problems, the present inventors have reached the present invention.

The present invention, in a polyester fiber cloth dyed with a disperse dye, collects the disperse dye, which easily migrates, with a large amount of inorganic particles, traps it in the fine pores, and transfers or stains from the cloth surface to another cloth surface. It is an object of the present invention to provide a polyester fiber-coated cloth which does not have a dye migration property and which is easy to be processed by the method.

[Means for Solving the Problems] The present invention has the following configurations.

(1) A work cloth in which a polyester fiber cloth is coated with a resin coating composed of two or more resin layers, wherein the resin coating has inorganic particles having fine pores with a pore diameter of less than 150Å, compared to other resin layers. A polyester fiber coated cloth, which has a resin layer dispersed in a high concentration.

(2) The polyester fiber-coated cloth according to (1), wherein the inorganic particles are at least one selected from silicon dioxide, titanium oxide, zirconia oxide, and aluminum.

(3) The polyester fiber-coated cloth according to (1), wherein the inorganic particles are fine particles having a surface area of 200 m ² / g or more.

(4) 10% or more of the inorganic particles contained in the resin layer in which the inorganic particles having fine pores with a pore diameter of less than 150Å are dispersed in a higher concentration than other resin layers, relative to the resin weight of the resin layer. The polyester fiber-coated cloth according to item (1).

(5) The polyester fiber-coated cloth according to (1), wherein the resin layer in which the inorganic particles having fine pores having a pore size of less than 150Å are dispersed in a higher concentration than other resin layers has a thickness of 3 μm or more.

 Hereinafter, the present invention will be described in detail.

The feature of the coated cloth in the present invention is that the dye that migrates in the resin film is different from the conventional technique that does not have the affinity for the disperse dye or has a small compatibility with the resin film or fine particles that prevent migration of the dye. It is a technical idea that attempts to prevent the dye transfer contamination by collecting all of the above.

As the fabric of the polyester fiber-coated cloth of the present invention, not only woven and knitted fabrics and non-woven fabrics made of 100% polyester, but also any fabric such as blended fiber, blended fiber, mixed twist, mixed woven, and mixed knit which require polyester fiber are possible . Although not particularly limited, the effect is more remarkable when 100% polyester or a high polyester ratio is mixed.

The dyed fabric used for the polyester fiber-coated cloth of the present invention does not require a particularly limited disperse dye or special dyeing conditions, and a dyed fabric that is normally dyed can be used.

As the inorganic particles used in the present invention, at least one of silicon dioxide, titanium oxide, zirconia oxide and aluminum oxide is used, and among them, silicon dioxide is most effectively used in terms of its effect.

The size of the inorganic particles used is preferably 15 μm at maximum and smaller.

Further, the size of the fine pores in the inorganic particles has a great influence on the adsorption effect of the transfer dye. For this reason, those smaller than 150Å are used. Preferably 10Å to 100Å is good in terms of effect. If it is larger than 150Å, the adsorption and retention of the transfer dye is insufficient.

The surface area of the inorganic particles is preferably 200 m ² / g or more, more preferably 500 m ² / g or more. Surface area 200
If it is less than m ² / g, the effect of the present invention is insufficient.

As the resin agent used in the present invention, various resin agents used for general coating processing such as urethane type, acrylic type, silicon type, vinyl chloride type, vinyl acetate type can be freely selected.

An example of the polyester fiber coated cloth of the present invention has a layered structure of two or more layers consisting of a resin layer A and a resin layer B in which inorganic particles are layered and dispersed in a high concentration as shown in FIG. .

Specifically, as a resin layer containing a high concentration of inorganic particles, a resin liquid A containing 10% or more of inorganic particles based on the solid weight of the resin, and whether the resin layer contains no inorganic particles at all? Alternatively, a resin liquid B containing less than 10% of inorganic particles is prepared.

Next, when coating a two-layer structure, the first layer 1 of the fiber layer 4 of FIG. 1 is coated with the resin liquid B, the second layer 2 is coated with the resin liquid A, or vice versa. Also,
When coating a three-layer structure, the resin liquid A is coated on any one of the first, second, and third layers in FIG. 1, and the resin liquid B is coated on the other two layers. In the case of coating the above two-layer structure or three-layer structure, when the resin liquid A is coated on the first layer 1, the adhesiveness to the fiber may be deteriorated. It is desirable to coat the second layer or the third layer 3. Furthermore, the thickness of the resin layer A in which the inorganic particles are layered and dispersed at a high concentration is 3
It is desirable to have the thickness of at least μm. The coating method using these resin agents is not particularly limited, and a usual method can be used for processing.

[Effect of the Invention] The present invention allows high-concentration inorganic particles to be interspersed in the coating resin in a layered manner, whereby all the high-concentration inorganic particles collect the dye that migrates from the fiber into the resin coating, and the inorganic particles Since it is adsorbed and held in the micropores held by the, it has the effect of permanently preventing the migration of the dye.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

[Examples] (1) The dye transfer stain fastness in the examples was evaluated according to the following method.

A white cloth attached with polyester on the coated and uncoated sides of the test piece (5 cm x 5 cm) (the same fabric as the test piece coated with the same resin as the test piece, 5 cm x 5 cm)
Sandwich between two glass plates so that the coating surfaces of the two contact each other, and apply a load of 200 gr to a thermostatic dryer (100 ° C ± 2
C.) and left to cool, and then the state of dye transfer from the test piece to the attached white cloth was graded with a gray scale for contamination.

The results of Examples and Comparative Examples are summarized in Table 1.

(2) The following resins were used as the coating resins used in the examples and comparative examples.

Polyester polyurethane resin (Crisbon 8006HV: Dainippon Ink and Chemicals, Inc.) Acrylic resin (Chriscoat P-1120: Dainippon Ink and Chemicals, Inc.) Silicone resin (Toray Silicone SD8001: Toray Silicone Co., Ltd.) Example 1 Warp yarn 50 denier, A plain woven fabric using polyester filament yarn with a weft thread of 75 denier (warp density 138 / inch, weft density 120 / inch) disperse dye Resolin, Blue FBL (Resoli
ne Blue FBL) Dyeing was performed for 60 minutes at 3% o, w, f at a temperature of 130 ° C, ordinary washing was performed, and after drying, heat setting was performed at 180 ° C to obtain a dyeing cloth for coating.

Next, a dimethylformamide solution of polyester-based polyurethane resin was coated as a coating resin with a knife coater and solidified by a wet method to form a film.

On the obtained coated cloth, in the same resin solution, the inorganic particle size was 3μm, the pore size was 50Å, and the surface area was 500m ² /
30% of silicon dioxide having g was dispersed in the resin solid content, and this was coated with a knife coater and solidified by a wet method to form a top coat. Further, a similar resin containing no inorganic particles was coated on this coated cloth with a knife coater and coagulated by a wet method to obtain a coated cloth having a three-layer structure having an inorganic particle layer in the middle. The thickness of the inorganic particle layer was 10 μm.

Comparative Example 1 Using the same dyeing cloth obtained in Example 1, a dimethylformamide solution of a polyester-based polyurethane resin containing no silicon dioxide was coated with a knife coater,
A coated cloth coagulated by a wet method was obtained.

Comparative Example 2 Using the same cloth as in Example 1, a coated cloth was obtained in which all the layers of the urethane resin contained inorganic particles in an amount of 5% based on the weight of the solid resin content.

Example 2 A coated cloth was obtained in the same manner as in Example 1 except that acrylic resin and silicone resin were used as the coating resin. The thickness of the inorganic particle layer was 10 μm.

Comparative Example 3 A coated cloth was obtained in the same manner as in Example 2 except that the acrylic resin excluding silicon dioxide and the silicone resin were separately used.

Comparative Example 4 The same cloth as in Example 1 was used to obtain a coated cloth in which all the acrylic resin layers contained inorganic particles in an amount of 5% based on the weight of the resin solid content.

As is apparent from Table 1, the present invention showed high migration stain fastness. On the other hand, the comparative example was inferior in the migration stain fastness and was not practical.

[Effects of the Invention] The polyester fiber-coated cloth of the present invention has a high concentration of inorganic particles in a layered state in the coating film, so that the dye transfer is completely suppressed and the contamination prevention is significantly improved.

In addition, since the fine inorganic particles used themselves have an air layer, they also have the effect of enhancing the heat retention property in a coated sports cloth for winter sports.

On the other hand, the processing method is also advantageous because it does not require a very simple and special device.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of the polyester fiber coated cloth of the present invention. 1: 1st layer 2: 2nd layer 3: 3rd layer 4: Fiber layer

Claims (5)

(57) [Claims] 1. A processed cloth in which a polyester fiber cloth is coated with a resin film composed of two or more resin layers, wherein the resin film contains inorganic particles having fine pores with a pore diameter of less than 150Å as another resin layer. A polyester fiber coated cloth having a resin layer dispersed in a higher concentration than the above. 2. The inorganic particles are silicon dioxide, titanium oxide,
The polyester fiber-coated cloth according to claim 1, which is at least one selected from zirconia oxide and aluminum. 3. The polyester fiber coated cloth according to claim 1, wherein the inorganic particles are fine particles having a surface area of 200 m ² / g or more. 4. The inorganic particles contained in a resin layer in which inorganic particles having fine pores having a pore size of less than 150Å are dispersed in a higher concentration than other resin layers, and the amount of the inorganic particles is 10% with respect to the resin weight of the resin layer.
The polyester fiber-coated cloth according to claim 1, which is contained above. 5. The polyester fiber coating according to claim 1, wherein the resin layer in which the inorganic particles having fine pores having a pore size of less than 150 Å are dispersed at a higher concentration than other resin layers has a thickness of 3 μm or more. Processed cloth.