JPH02251672A - Coated cloth of polyester fiber - Google Patents

Abstract

PURPOSE:To obtain a coated cloth resistant to staining owing to the suppressed dye-migration and having excellent heat-insulation property by preparing a resin layer containing specific fine porous inorganic particles at high concentration and interposing the resin layer into a resin coating film of a polyester fiber cloth. CONSTITUTION:A polyester fiber cloth is coated with a resin coating film having a resin layer containing >=10wt.% (based on the weight of the resin constituting the layer) of at least one kind of inorganic particle having fine pores with pore diameter of <150Angstrom and a surface area of >=200m<2>/g and selected from silicon dioxide, titanium oxide, zirconia oxide and aluminum. The thickness of the layer is >=3mum and the layer contains the above inorganic particles in a laminarily dispersed state at a concentration higher than the concentration in the other resin layer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a polyester fiber coated fabric without dye migration.

[Prior art] Currently, the coated fabrics used for boat fishing are woven and knitted fabrics mainly made of nylon fibers, such as water-repellent/waterproof, moisture-permeable/water-repellent, breathable, flame-retardant and melt-proof fabrics. BACKGROUND ART Various products that have undergone processing such as coating are widely used for clothing or industrial purposes.

However, in recent years, the price difference between nylon fiber and polyester has widened further due to the rising cost of raw materials for nylon fiber. Therefore, as an alternative to nylon fibers, coated fabrics made of polyester fibers, which have superior characteristics such as dimensional stability, strength, light resistance, and material versatility, have been actively developed.

However, coated fabrics made of polyester fibers had a fatal problem in that dyes migrated from the coating film and caused significant staining. The reason for this is that the fiber and dye are not chemically combined, as is the case with acid dye dyeing of nylon, but in the case of disperse dye dyeing of polyester fiber, the fiber matrix is relaxed and the dye molecules are physically separated. The dyeing process is completed by pressing, and since disperse dyes have solubility and affinity for organic solvents and synthetic resins, it is thought that the dye within the fibers will migrate to the coating film layer during the coating process.

Therefore, in a coated fabric, when a dark color and a light or white coated surface come into contact, the dye on the dark side easily migrates to the light or white coated surface, causing staining. Various studies have been made to date regarding this problem, but the current situation is that they are not perfect and have not yet been put into practical use.

JP-A No. 60-45686 also describes fine metal powders such as aluminum, copper, and silver, metal oxides such as potassium titanate, titanium dioxide, and tin oxide, and substances that are poorly compatible with disperse dyes. A method has been proposed to prevent the dye from sublimating using a dye, but this method cannot completely capture all the dye that migrates and cannot completely prevent staining due to dye migration.

Also, JP-A No. 58-4873 and JP-A No. 62-
53632, although the purpose is completely different, 5i02
A method for processing a fibrous structure has been proposed in which a water repellent having a perfluoroalkyl group is applied to a fibrous structure on which a polyurethane resin film containing porous particles mainly composed of .

However, the purpose of both of these inventions is to obtain a waterproof fabric with air permeability and moisture permeability by using the micropores of the particles in the polyurethane resin as flow paths for air and steam. Therefore, in polyester fiber fabrics dyed with disperse dyes, there is no recognition or consideration given to suppressing the migration and contamination of disperse dyes from one fabric surface to another, and there is no effect on preventing pollution. .

[Problems to be Solved by the Invention] The present inventors have arrived at the present invention as a result of intensive studies to solve the above problems.

In a polyester fiber fabric dyed with a disperse dye, the disperse dye, which easily migrates, is collected with a large amount of inorganic particles, and the disperse dye is trapped in the micropores, so that it does not migrate or contaminate the fabric surface to other fabric surfaces. The purpose of this invention is to provide a polyester fiber-coated cloth that has no dye migration and is easy to process.

[Means to solve the problem] The present invention has the following configuration.

(1) A processed cloth in which a polyester fiber cloth is coated with a resin film, and the resin film has a pore diameter of 15
A polyester fiber-coated fabric characterized by interposing a resin layer in which inorganic particles having micropores smaller than 0A are dispersed in layers at a higher concentration than other resin layers.

■ Inorganic particles are silicon dioxide and titanium oxide.

The polyester fiber coated fabric according to (1), which is at least one selected from 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%/g or more.

(4) Inorganic particles dispersed in a layered manner at a high concentration in the resin film,
The polyester fiber-coated fabric according to (1), which contains 10% or more of the resin based on the weight of the layered portion. .

(2) The polyester fiber-coated fabric according to (1), wherein the layer containing inorganic particles dispersed in a layered manner at a high concentration in the resin film has a thickness of 3 μm or more.

The present invention will be explained in detail below.

The characteristics of the coated fabric of the present invention are different from conventional techniques in which dye migration is prevented using resin coatings or fine particles that have no or low compatibility with disperse dyes.
The technical idea is to capture all the dye that migrates within the resin coating and prevent dye migration contamination.

The polyester fiber-coated fabric of the present invention may include 100% polyester woven or knitted fabrics or non-woven fabrics, as well as blended fabrics, blended fibers, intertwisted fabrics, interwoven fabrics, interwoven knitted fabrics, etc. that require polyester fibers. . Although not particularly limited, 100% polyester or a high percentage blend of polyester has a more pronounced effect.

The dyed fabric used in the polyester fiber-coated fabric of the present invention does not require particularly limited disperse dyes or special dyeing conditions, and any normally dyed fabric 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 used most effectively in terms of effectiveness.

The size of the inorganic particles used is at most 15 μm, and the smaller the better.

Furthermore, the size of the micropores in the inorganic particles greatly influences the adsorption effect of the migrated dye. For this reason, a number smaller than 150 people is used. Preferably 10 to 100 people are good in terms of effectiveness. If it is larger than 150 people, adsorption and retention of the migrated dye will not be sufficient.

Further, the surface area of the inorganic particles is preferably 200 rrr/g or more, more preferably 500 rrrf/g or more. If the surface area is less than 200n(/g), the effect of the present invention is insufficient.

As the resin agent used in the present invention, various resin agents used in general coating processing, such as urethane type, acrylic type, silicone type, vinyl chloride type, and 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 dispersed in layers at 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 a resin liquid A containing no inorganic particles at all as a resin layer. or resin liquid B containing less than 10% inorganic particles
Create.

Next, when coating in a two-layer structure, there is a method in which the first layer 1 of the fiber layer 4 in FIG. 1 is coated with 8 resin liquids and the second layer 2 is coated with resin liquid A, or vice versa. Also, 3
When coating a layered structure, 1. in FIG. 2.
One of the third layers is coated with resin liquid A, and the other two layers are coated with resin liquid B. In addition, when coating the above two-layer structure or three-layer structure, resin liquid A
If the first layer is coated with 1, the adhesion with the fibers may decrease.
It is desirable to coat the second layer 2 or the third layer 3. Furthermore, it is desirable that the thickness of the resin layer A in which inorganic particles are dispersed in a layered manner at a high concentration is 3 μm or more. The coating method using these resin agents is not particularly limited, and any conventional method can be used.

[Function of the Invention] The present invention allows highly concentrated inorganic particles to be interposed in a layered manner in a coating resin, so that the highly concentrated inorganic particles can collect all the dye that migrates from the fibers into the resin coating. Because it is adsorbed and retained within the micropores of
This shows the effect of permanently preventing dye migration.

The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to these Examples.

[Example] (1) Evaluation of dye migration stain fastness in Examples was performed according to the following method.

Polyester attached white cloth (same fabric as the test piece, coated with the same resin as the test piece, 5C) on the coated and non-coated sides of the test piece (5cm x 5cm)
It was sandwiched between two glass plates so that the coated surfaces of 5 cm x 5 cm) were in contact with each other, and a load of 200 gr was placed on the glass plate and left in a constant temperature dryer (100°C ± 2°C) for 48 hours. After cooling, The state of dye transfer from the test piece to the attached white cloth was graded using a gray scale for contamination.

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

(2) The following coating resins were used in Examples and Comparative Examples.

Polyether polyurethane resin (Crisbon 8006HV: manufactured by Sanyo Kasei Co., Ltd.) Acrylic resin (Criscoat P-1120: manufactured by Dainippon Ink Co., Ltd.) Silicone resin (Toray Silicone 5D8001: Toray Silicone Co., Ltd.) Example warp yarn 50 denier , plain woven fabric using polyester filament yarn with a weft of 75 denier (warp density 138 threads/inch),
Weft density 120 lines/inch) disperse dye resolin, Blue FB
L (Resol ine Blue FBL) 3
% o, w, f, stained at temperature 130 °C for 60 min,
The cloth was washed in the usual way, dried and then heat set at 180° C. to obtain a dyed cloth for coating.

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

On the obtained coated fabric, inorganic particles with a diameter of 3 μm 1 pore size 50 μm and a surface area of 500 μm were added in the same resin solution.
RF/g was dispersed in an amount of 30% based on the solid content of the resin, and this was coated with a knife coater and coagulated by a wet method to form a top coat. Further, this coated fabric was coated with a similar resin containing no inorganic particles using a knife coater and coagulated by a wet method to obtain a coated fabric having a three-layer structure with an inorganic particle layer in the middle. The thickness of the inorganic particle layer was 10 μm.

Comparative Example 1 A dyed cloth similar to that obtained in Example 1 was coated with a dimethylformamide solution of polyether-based polyurethane resin that does not contain silicon dioxide using a knife coater, and a coated cloth was obtained which was coagulated by a wet method. .

Comparative Example 2 Using the same fabric as in Example 1, a coated fabric was obtained in which the entire layer of urethane resin contained inorganic particles dispersed in an amount of 5% based on the solid weight of the resin.

Example 2 A coated cloth was obtained in the same manner as in Example 1 except that acrylic and silicone resins were used as the coating resins. 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 an acrylic resin without silicon dioxide and a silicone resin were used separately.

Comparative Example 4 Using the same fabric as in Example 1, a coated fabric was obtained in which the entire layer of acrylic resin contained inorganic particles dispersed in an amount of 5% based on the solid weight of the resin.

As is clear from Table 1, the present invention exhibited high migration stain fastness. On the other hand, the comparative example had inferior migration stain fastness and was not considered practical.

Table 1 [Effects of the Invention] Since the polyester fiber-coated fabric of the present invention has highly concentrated inorganic particles present in a layered coating, dye migration is completely suppressed and stain prevention is significantly improved.

Furthermore, since the fine inorganic particles used themselves have air layers, they also have the effect of increasing heat retention in coated fabrics for winter sports.

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

[Brief explanation of drawings]

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

Claims (5)

[Claims] (1) A processed cloth in which a polyester fiber cloth is coated with a resin film, and the resin film has a pore diameter of 15
1. A polyester fiber-coated fabric characterized by interposing a resin layer in which inorganic particles having micropores smaller than 0 Å are dispersed in a layered manner at a higher concentration than other resin layers. (2) The polyester fiber-coated fabric according to claim (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 claim 1, wherein the inorganic particles are fine particles having a surface area of 200 m^2/g or more. (4) Inorganic particles dispersed in a layered manner at a high concentration in the resin film,
The polyester fiber-coated fabric according to claim 1, wherein the resin content is 10% or more based on the weight of the layered portion. (5) The polyester fiber-coated fabric according to claim (1), wherein the layer containing inorganic particles dispersed in layers at a high concentration in the resin film has a thickness of 3 μm or more.