JPH08127106A - Material for clothing - Google Patents

Abstract

PURPOSE: To enhance cutting or sewing workability and the bonding workability of a sealing tape after sewing in a material for clothing composed of the so- called rubber lined cloth obtained by applying a polymer such as rubber to base cloth. CONSTITUTION: A coating layer 2 composed of a compsn. prepared by mixing 5-100 pts.wt. of a particulate powder (p) with a center particle size of 5-100μm with 100 pts.wt. of a polymer component is formed on at least the single surface of base cloth 1. The thickness of the coating layer 2 is 1-80μm as base thickness (b1, b2). The polymer component is a rubbery polymer component and the particulate powder (p) is pref. composed of beads selected from glass beads, crosslinked styrene beads and crosslinked polyvinyl chloride beads.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothing material made of a so-called rubberized cloth obtained by coating a polymer such as rubber on a base cloth, and particularly to workability such as cutting and sewing, or stitch tape after sewing. The present invention relates to the above-mentioned material for clothing having improved adhesion strength.

[0002]

2. Description of the Related Art The above-mentioned rubberized cloth is basically composed of a solution of a polymer such as rubber dissolved in a solvent or a rubber-based water-soluble emulsion (hereinafter Is abbreviated as "rubber solution") and dried (vulcanized as necessary) to form a film. However, in the rubberized cloth obtained by such a basic manufacturing method, due to the viscoelastic property of rubber, the coating surface of the rubber solution (generally this surface is) becomes sticky and slips even after vulcanization. Inferior in workability, workability such as cutting and sewing is poor, and wet feel and poor wearing comfort.

Therefore, conventionally, (a) a matting agent (a matting agent) or a lubricity-imparting agent such as silicone is mixed in the rubber solution, or (b) starch or talc is applied to the coating surface after film formation. The above defects such as slippage are eliminated to some extent by spraying powder such as the above (hereinafter, this operation is referred to as "dusting").

By the way, when the above-mentioned rubberized cloth is used as a material for a rain garment, after the sewing into a predetermined shape, a seam tape is attached to the seam in order to prevent leakage (intrusion) of rain water from the seam. Is generally done.

However, the above-mentioned lubricity-imparting agent (a) and starch and talc (b) are substances that inhibit adhesion and reduce the adhesive strength of the above-mentioned sealing tape. Therefore, the amount of the slipperiness-imparting agent of (a) and the amount of dusting of starch or talc of (b) cannot be increased too much, but if the amount of mixing and the amount of dusting are too small, the above-mentioned problems such as slippage occur. It does not solve the problem, but it also contributes to the variation in quality.
Therefore, it is extremely difficult to determine the blending amount and the dusting amount.

In addition to these problems, in the case of the matting agent (a), if a sufficient amount (a considerably large amount) is added to solve the problems such as slippage, the coating layer of the product becomes hard, The so-called "rubber-likeness" disappears, and in the case of silicone, the slimy feeling appears and the dry feeling disappears, and the tape adhesive strength is significantly reduced.

In the case of dusting of starch or talc of (b), not only the working environment is deteriorated due to the generation of dust during dusting work, but also the worker is required during the work such as cutting, sewing or sticking tape. May contaminate clothing of the wearer, or may contaminate clothing of the wearer during use as rain clothing or the like. Also, due to repeated washing, starch, talc, etc. gradually fall off, the original viscoelastic surface of rubber appears, the stickiness and wet feeling gradually increase, and finally it becomes clothing with poor slipperiness and comfort. Will change. A large amount of dusting is performed in order to eliminate this drop, but a large amount of dusting increases the material cost, makes the above dust generation and contamination more intense, and drastically reduces the adhesive strength of the sealing tape and the like. Let

The present invention solves the above problems, improves the workability of cutting and sewing or the adhesive strength of tapes and the like, and also enables the production at low cost. It is intended to provide a rubberized cloth as a material.

[0009]

Means and Actions for Solving the Problems
As a result of repeated studies in order to achieve the above object, the following findings were obtained. (B) In the conventional technical field of this kind of material (rubber cloth),
It is a general rule to avoid compounding additives with large particle diameters as much as possible because of concern that the appearance, texture, waterproofness, or feel of rubberized materials may be impaired. Regarding the surface treatment agent of a), it has been said that it is necessary to use ultrafine particles having a particle diameter of less than 5 μm even if the particle diameter is coarse and less than 1 μm when the particle diameter is fine. (B) The present inventor daringly goes against the conventional technical common sense of this kind of field and positively uses a large particle size, without impairing the appearance, texture, feel, etc. of rubberized material. ,
Good slipperiness and dry feeling could be obtained.

The clothing material of the present invention is made on the basis of these findings, and the central particle diameter is 5 to 100 μm with respect to 100 parts by weight of the polymer component on at least one surface of the base fabric.
The coating layer is formed by mixing 5 to 100 parts by weight of the granular powder of. At this time, (1) the thickness of the coating layer is 1 to 80 μm in terms of the thickness of the base (details will be described later), and (2) the polymer component is
It is a rubber-based polymer component, and (3) the granular powder is
Glass beads, cross-linked polystyrene beads, cross-linked polyvinyl chloride beads, urethane beads, polyethylene beads,
Polypropylene beads, nylon beads, silicone beads, silica beads, alumina beads, silas balloons, glass balloons, urea resin beads, phenol resin beads, fluororesin beads, stainless beads, crosslinked acrylic resin beads, vinylidene fluoride resin beads, benzoguanamine resin beads A preferred embodiment is one or more selected from the group consisting of epoxy resin beads, melamine resin beads, polyolefin resin beads, cellulose beads, those obtained by coupling these beads, and crosslinked starch.

In the granular powder according to the present invention, the central particle diameter (diameter passing through the center of the granular powder) is 5 to 100 μm (in this specification, all words and sizes expressing the particle diameter refer to the central particle diameter. Point). The above-mentioned ultrafine particle surface treatment agent (a) (coarse one is less than 5 μm, fine one is 1
However, in the present invention, even a fine one is 5 μm.
Granular powder having a fairly large particle size of about 100 m and about 100 μm is used. The reason for this is as follows.

In the present invention, a part of the granular powder is projected from the surface of the coating layer (base surface), and the projections and the base surface (concave surface) of the coating layer cause unevenness to reduce the friction coefficient of the coating layer. 5) to eliminate stickiness, to develop good slipperiness and dryness, and to increase the adhesive strength of the tension tape.
If it is less than μm, the protrusion from the coating layer is lost, or the degree of protrusion is too small to obtain this effect, and if it is more than 100 μm, the degree of protrusion is too large and the powder is likely to peel off. This is because the feel of the material may deteriorate. In the present invention, the preferable central particle size is 10 to 50 μm.

The specific gravity of the above-mentioned granular powder is not particularly limited, and light to heavy ones can be used. However, lighter ones are more likely to protrude from the surface of the coating layer than heavier ones. Then, the lighter one is preferable to the heavier one. However, if it is too light, there are disadvantages such as scattering during mixing with the polymer component and difficulty in kneading with the polymer component. Therefore, an appropriate specific gravity, specifically 0.2 to 2. It is preferable to use one adjusted to about 5 (adjusted by mixing a heavy one and a light one, or by selecting only those having a specific gravity within this range).

If the mixing amount of the above-mentioned granular powder is too small, the above-mentioned effect cannot be obtained, and if it is too large, the above-mentioned effect is saturated and it is uneconomical. Moreover, the number of protrusions becomes too large, and a rough feeling is generated. May occur, and the texture may worsen, or the texture of the rubberized cloth may be impaired. Moreover, if the amount of mixture is too large, not only the material cost will increase, but also the waterproof function as waterproof clothing will be deteriorated, and the kneading work with the polymer and the coating work on the base cloth after kneading will be difficult. . Therefore, in the present invention, the amount is 5 to 100 parts by weight, preferably 10 to 30 parts by weight, based on 100 parts by weight of the polymer component.

The thickness of the coating layer in which the granular powder is mixed with the polymer component is the base (the coating layer portion excluding the portion where the granular powder is projected). For example, as shown in FIG. The thickness of the portion b1 where no powder is present and the thickness of the granular powder p which is present but refers to the portion b2 in which the protrusion h is removed) are preferably 1 to 80 μm. There is.

If the base is thicker than 80 μm, the projection of the granular powder having the above-mentioned central particle diameter is eliminated or the projection degree becomes too small to obtain the above effect due to the projection of the granular powder. If so, not only is it difficult to uniformly coat, but the fixing effect of the granular powder is reduced and peeling easily occurs, and the feel of rubberizing is reduced. In the present invention, the preferable thickness of the coating layer is about 2 to 50 μm in terms of base thickness.

In the present invention, one or a plurality of coating layers consisting only of polymer components are previously formed on the surface of the base fabric, and a coating layer in which granular powder is mixed is formed on the surfaces of these coating layers. It can also be formed.

Further, in the present invention, a rubber-based polymer component is preferably used as the polymer component constituting the coating layer. Specific examples of this rubber-based polymer component are NR (natural rubber), SBR (styrene butadiene rubber), CR (chloroprene rubber), NBR.
(Acrylonitrile butadiene rubber), CSM (chlorosulfonated polyethylene), IR (isoprene rubber),
IIR (butyl rubber), EPDM (ethylene propylene rubber), ECO (epichlorohydrin rubber), FR (fluorine rubber), AR (acrylic rubber), UR (urethane rubber), Si (silicone rubber), TR (polysulfide rubber),
Examples thereof include EPR (ethylene-propylene rubber), EVA (ethylene-vinyl acetate rubber), CPE (chlorinated polyethylene rubber), ESR (polyester rubber) and BR (butyl rubber). These may be used alone or in combination of two or more.

The granular powder mixed in the polymer component is glass beads, crosslinked styrene beads, crosslinked polyvinyl chloride beads, urethane beads, polyethylene beads,
Polypropylene beads, nylon beads, silicone beads, silica beads, alumina beads, silas balloons, glass balloons, urea resin beads, phenol resin beads, fluororesin beads, stainless beads, crosslinked acrylic resin beads, vinylidene fluoride resin beads, benzoguanamine resin beads At least one selected from the group consisting of epoxy resin beads, melamine resin beads, polyolefin resin beads, cellulose beads, those obtained by coupling these beads, and crosslinked starch.

The above-mentioned beads which have been subjected to a coupling treatment are those in which these beads are covered with a coupling agent. As this coupling agent, a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, etc. can be preferably used.

Specific examples of the above-mentioned silane coupling agent include γ-chloropropyltrimethoxysilane, vinyltriethoxysilane, vinyltris (β-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane and β-. (3,4-Epoxycyclohexyl) ethyltrimethoxysilane, N-β- (aminoethyl)-
Examples include γ-aminopropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-aminopropyltriethoxysilane and γ-ureidopropyltriethoxysilane.

Specific examples of the titanate coupling agent include isopropyl triisostearoyl titanate, isopropyl tri (lauryl-myristyl) titanate, isopropyl isostearoyl dimethacryl titanate, isopropyl tri (dodecylbenzenesulfonyl). ) Titanate, isopropyl isostearoyl diacryl titanate, isopropyl tri (diisooctyl phosphate) titanate, isopropyl di (dodecylbenzenesulfonyl) 4-aminobenzenesulfonyl titanate, isopropyl trimethacryl titanate, diaris phosphite system Titanate, isopropyl isostearoyl di4-aminobenzoyl titanate, isopropyl tri (dioctylpyrophosphine) Over door) titanate, isopropyl
Examples include triacroyl titanate, dioctyl phosphite titanate, isopropyl tri (N-ethylamino ethanolamino) titanate, and the like.

Specific examples of the above aluminate-based coupling agent include acetoalkoxyaluminum diisopropylate.

In order to cover the beads with the above coupling agent, the beads are dipped in a solution of a coupling agent, the solution is sprinkled on the beads, the solution and the beads are mixed and stirred, etc. do it.

The granular powder may be used alone or in combination of two or more kinds. Further, as the granular powder, one having a spherical or elliptical cross section, a spherical shape, or a hollow spherical shape is preferably used because it has a small contact resistance on the surface and therefore has a good touch.

The base cloth for forming the coating layer of the polymer component mixed with the above-mentioned granular powder may be the base cloth usually used for this kind of material, and specifically, natural fiber, synthetic fiber, or the like. Woven fabrics, non-woven fabrics, knitted fabrics and the like made of the mixed fibers of the above can be used.

In the clothing material of the present invention having such a constitution, as schematically shown in FIG. 1, in the coating layer 2 formed on at least one surface of the base fabric 1, the polymer component forms a film, Part of the granular powder p protrudes from the surface (base surface) of the film, and the rest is embedded in the base, so that the granular powder p is present in a uniformly dispersed state throughout the coating layer 2.

The surface of the projection h of the granular powder p is covered with the polymer component and the surface of the projection h is not covered but is exposed to the atmosphere.
Most of the former is covered. Therefore, the granular powder does not come into direct contact with the skin but comes into contact with the skin through the film composed of the polymer component. The material for clothing has a good touch.

Further, in the material for clothing of the present invention, when cutting or sewing, the protruding portion h (convex portion) of the granular powder p comes into direct contact with the cutting or sewing table, and the base surface (concave surface) is It does not come into direct contact and shows good slipperiness to improve these workability. In addition, when sticking the tension tape after sewing, the sticking adhesive receives the anchor effect due to the above-mentioned unevenness, and realizes strong sticking.

Furthermore, the above-mentioned unevenness gives the material for clothes of the present invention a dry feeling, and makes it a material for clothes which is extremely comfortable to wear despite being a rubberized cloth.

The method for producing the clothing material of the present invention will be described below with reference to an example. First, the above-mentioned granular powder is mixed in the above-mentioned polymer component in the above-mentioned mixing ratio to prepare a coating solution. At this time, a solvent is used, and examples of the solvent include those which do not dissolve the above-mentioned granular powder, such as gasoline, toluene, methyl ethyl ketone (MEK), ethyl acetate, etc., and these are used alone. It is also possible to mix and use two or more kinds.

In the above coating solution, if necessary, various additives, specifically, a vulcanizing agent and a vulcanization accelerator of a rubber polymer component, a softening agent, a filler (having a particle size of 2 μm or less ), A reinforcing agent, an antiaging agent, a pigment, an antistatic agent, an adhesion-imparting agent, an ultraviolet absorber and the like can be mixed in an appropriate ratio.

The above coating solution is a granular powder,
Alternatively, the above various additives to be mixed as necessary,
It is important that the polymer component is uniformly dispersed and present, and for this purpose, a conventional technique for producing a rubber paste is applied. That is, the above compound (hereinafter,
"Rubber compound") is uniformly kneaded with a roll, kneader, Banbury, etc. (called "kneading pressure" in rubber processing), the dispersed rubber compound is thinly sheeted with a dispensing roll, etc. Impregnated with solvent for swelling,
Stir with a stirrer to make a uniform rubber paste. The above-mentioned granular powder is mixed into this uniform rubber paste directly or by dispersing it in a solvent, and is evenly dispersed by a high-speed stirrer (dispersed in a state where the powdery particles do not secondary agglomerate).

Surprisingly, in the present invention, in the case where the surface treatment agent is blended, although a granular powder having a considerably large particle size is used as compared with the matting agent (a), Even with a kneading degree, a sufficiently uniform dispersed state can be obtained. It is presumed that the reason for this is that the above-mentioned material of the granular powder and the above-mentioned polymer component have good compatibility with each other, so that even with the conventional kneading, the two are sufficiently mixed without being separated.

The coating solution prepared as described above is coated on the front surface or the back surface of the above-mentioned base cloth, or on both the front surface and the back surface, preferably so as to have the above-mentioned thickness after the completion of the product. The coating method is not particularly limited, and an appropriate coating method is selected from a doctor knife method, a roll method, a screen method and the like depending on the viscosity of the coating solution.

Next, it is dried, and when a rubber-based component is used as the polymer component, it is vulcanized to form a film.

During vulcanization, in general, when the vulcanization equipment (oven etc.) and the coating layer come into direct contact, the polymer component of the coating layer deteriorates and stickiness occurs. Powdering of starch, silicone, etc. was performed to prevent direct contact between the vulcanization equipment and the coating layer. On the other hand, in the present invention, the polymer component of the coating layer does not deteriorate even if dusting is not performed, and therefore, stickiness does not occur. It is presumed that the reason for this is that the granular powder having a large particle diameter contained in the coating layer prevents direct contact between the polymer component of the coating layer and the vulcanization equipment to some extent.

The specific conditions of temperature and time differ depending on the thickness of the coating layer, the type of polymer component and the type and blending ratio of the granular powder to be used, and cannot be unconditionally determined, but within the scope of the present invention, That is, rubber-based polymer component 1
A coating layer in which 5 to 100 parts by weight of the above-mentioned type of granular powder having a central particle diameter of 5 to 100 μm is mixed with 00 parts by weight, and the temperature of the coating layer is 1 to 80 μm and the temperature is 80 to 80 μm. It is sufficient that the temperature is 150 ° C. and the time is about 5 to 15 minutes, and the temperature and time conditions are used as a guide, depending on the thickness of the coating layer actually used, the polymer component and the type and blending ratio of the granular powder, etc. The optimum vulcanization conditions may be selected.

Through the above steps, the clothing material of the present invention can be obtained. Needless to say, the material for clothing of the present invention can be manufactured by various processes, not limited to the above processes.

[0040]

【Example】

Example 1 A polymer component having a composition shown in Table 1 was kneaded with various additives to prepare a so-called "kneaded rubber", and the kneaded rubber was mixed with the granular powder and other additives in the composition shown in Table 2. A coating solution was prepared by kneading with the agent.

[0041]

[Table 1]

[0042]

[Table 2]

The coating solution of Table 2 was applied onto a base cloth,
After coating 3 times with a doctor knife, 1
Vulcanized at 50 ° C for 10 minutes, thickness 0.03mm
A coating layer of (30 μm) was formed to obtain the material for clothing of the present invention.

Using this conventional material for clothing,
When it was cut for rain clothes and sewn, it showed good slipperiness and could be completed with extremely high efficiency.

Further, after sewing, a commercially available rubber-coated adhesive tape having a back surface coated with an adhesive was used as a tension tape, and the adhesive application surface side was pressed against the seam to adhere it. The adhesive strength of this tape was measured according to JIS-K-6320, and the results shown in Table 3 were obtained.

[0046]

[Table 3]

As is clear from Table 3, according to the clothing material of the present invention, the adhesive strength of the tension tape is equally strong in the dry state and the wet state, and it has an extremely excellent quality as a material for rain clothing and the like. You can see that Also,
The touch to the skin was not sticky and had a dry and dry feel.

Comparative Example 1 In the formulations of Table 1 and Table 2 of Example 1, except that the glass beads having a central particle diameter of 10 to 50 μm as the granular powder were replaced with a matting agent (a commercially available matting agent), A comparative clothing material 1 was prepared in exactly the same manner as in Example 1.

When this comparative clothing material 1 was cut and sewn in the same manner as in Example 1, the cutting table was not moved smoothly and desired cutting was impossible, so the cutting was interrupted. I had no choice.

COMPARATIVE EXAMPLE 2 A comparative clothing material was used in the same manner as in Example 1 except that the amount of the matting agent used in Comparative Example 1 was 9.4 kg and the vulcanization conditions were 150 ° C. and 10 minutes. 2 was prepared.

When this comparative clothing material 2 was cut and sewn in the same manner as in Example 1, it was not as smooth as in Example 1, but desired cutting and sewing were possible.

After sewing, a seam tape was attached to the seam in the same manner as in Example 1, the adhesive strength of this tape was measured in the same manner as in Example 1, and the results are shown in Table 4.

[0053]

[Table 4]

As is clear from Table 4, the comparative clothing material 2 has a lower adhesive strength of the tension tape in the dry state or in the wet state and is more excellent in the wet state as compared with the clothing material of the present invention. It becomes low, and it is understood that the quality as a raincoat is not preferable. Further, the touch to the skin had a sticky feeling, as compared with the material for clothing of the present invention.

[0055]

As described in detail above, the material for clothing of the present invention has excellent slipperiness and extremely good workability such as cutting and sewing, and moreover, it is a tension tape to be attached to seams and other places. The adhesive strength of the tape and other tapes is also extremely high, and it has excellent quality as a material for clothing such as rain clothes.

Moreover, the material for clothing of the present invention does not have the sticky feeling peculiar to rubberized cloth and is rich in dry feeling, so that it is comfortable to wear and comfortable to wear and has good slipperiness. It can be worn smoothly and has excellent quality for clothing other than raincoats.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a cross section of a clothing material of the present invention.

[Explanation of symbols]

 1 Base cloth 2 Coating layer p Granular powder

Claims (4)

[Claims] 1. A coating layer formed by mixing 5 to 100 parts by weight of a granular powder having a central particle diameter of 5 to 100 μm with respect to 100 parts by weight of a polymer component, on at least one side of a base fabric. Material for clothing. 2. The material for clothing according to claim 1, wherein the thickness of the coating layer is 1 to 80 μm in terms of the thickness of the base. 3. The material for clothing according to claim 1, wherein the polymer component is a rubber-based polymer component. 4. The granular powder comprises glass beads, crosslinked polystyrene beads, crosslinked polyvinyl chloride beads, urethane beads, polyethylene beads, polypropylene beads, nylon beads, silicone beads, silica beads, alumina beads, silas balloons, glass balloons, Urea resin beads, phenol resin beads, fluorine resin beads, stainless steel beads, crosslinked acrylic resin beads, vinylidene fluoride resin beads, benzoguanamine resin beads, epoxy resin beads, melamine resin beads, polyolefin resin beads, cellulose beads, cups of these beads 4. The material for clothing according to claim 1, which is one or more selected from the group consisting of ring-treated starch and cross-linked starch.