JPH06272170A - Production of raised fabric - Google Patents

Abstract

PURPOSE:To produce a raised fabric retaining its mechanical strength before raising and having uniformly and stably raised state. CONSTITUTION:A fibrillating type fabric comprising polyamide/polyester conjugate fibers is imparted with a chemical agent capable of swelling the polyamide and then brought into contact with a raising member having hard rough surface to raise the fabric, thus obtaining the objective raised fabric.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for producing a raised fabric having an ultra-thin raised touch.

[0002]

2. Description of the Related Art Conventionally, as a method of obtaining a raised touch, which is one of the surface changes of cloth, a needle cloth or a particle size of 50 to 200 μ
A method of raising the surface of the woven fabric by bringing a raised member such as sandpaper to which the abrasive grains of m are applied into contact with the surface of the woven fabric, or throwing the woven fabric and pumice stones into a washer or the like to raise the surface of the woven fabric There is a way. If the surface of the fabric is brought into contact with a cloth or sandpaper to make the surface of the fabric ultrathin, the conditions for contacting the fabric or sandpaper with the surface of the fabric must be finely adjusted. However, there is a problem that the work is very difficult and the strength of the woven fabric is reduced by contact with the needle cloth or sandpaper. Further, the method of introducing the woven fabric and pumice stone into the washer has a problem that a uniform napped state cannot be obtained.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve various problems as described above when raising a woven fabric. That is, an object of the present invention is to make it possible to stably raise the surface of the woven fabric in a constant state without causing the strength of the woven fabric to be lowered by the raised hair unlike in the conventional case.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the inventors of the present invention added a chemical agent for swelling polyamide to a fibrillated composite fiber woven fabric composed of polyamide and polyester, The present invention has been completed, which comprises a method for producing a raised woven fabric, which comprises raising the woven fabric by contacting the woven fabric in the state of being applied with a drug with a raised member having a hard rough surface.

That is, according to the present invention, by raising a fibrillated type composite fiber woven fabric composed of polyamide and polyester in a wet state, the strength is not lowered and the woven fabric surface is stably raised in a constant state. As a result of conducting research focusing on what is possible, it has been completed.

The fibrillated composite fiber fabric comprising polyamide and polyester in the method of the present invention means that polyamide and polyester have a shape in which one component does not completely surround the other in the cross section of a single filament. A fabric woven from composite fibers that are joined along the length of a single filament. Here, examples of the woven fabric include a plain woven fabric and a twill woven fabric.

Here, as the polyamide, for example, nylon 4, nylon 6, nylon 7, nylon 11, nylon 12, nylon 66, nylon 6,10, polymetaxylene adipamide, polyparaxylylene decanamide, polybiscyclohexyl are used. Examples include methanedecanamide and copolyamides containing them.

As the polyester, for example, polyethylene terephthalate, polytetramethylene terephthalate, polyethylene oxybenzoate, poly 1,4
-Dimethylcyclohexane terephthalate, polypivalolactone and copolyesters containing these as components.

The ratio of both polyamide / polyester components is usually in the range 0.05 to 0.95.

The fibrillated composite fiber woven fabric made of polyamide / polyester is provided with an agent for swelling polyamide (hereinafter referred to as a fibril-forming agent) to carry out opening fibril formation. Here, the opened fibrillation means that the fibrillated type composite fiber is divided into the joint portions of the respective components and becomes a fibril composed of a segment yarn of one component and a segment yarn of the other component.

Specific examples of the fibrillating agent include benzyl alcohol, β-phenylethyl alcohol, phenol, m-cresol, formic acid, acetic acid and the like. Further, it is suitable to use it as an aqueous solution or an aqueous emulsion thereof. Among them, the method of using an aqueous emulsion of benzyl alcohol is most suitable for the method of the present invention in terms of the shrinkability and fibrillation effect of the woven fabric, and the relatively easy handling.

In order to prepare an aqueous emulsion of the above fibrillating agent, a surfactant may be added to the fibrillating agent and emulsified and dispersed. Examples of the surfactant include a nonionic surfactant, a cationic surfactant, It may be an anionic activator, an amphoteric activator or a mixture thereof.

The concentration of the fibrillating agent is preferably 1.5% by weight or more in order to obtain sufficient shrinkage and fibrillation effect. If it exceeds 50% by weight, it becomes unstable in the case of an aqueous emulsion, and it becomes very difficult to remove the fibrillating agent afterwards, and there is a possibility that components other than the polyamide component may be affected. From this viewpoint, the concentration is particularly preferably 3 to 30% by weight.

In the method of the present invention, it is preferable that the untreated product is left in the treatment liquid containing the fibrillating agent as described above, or is squeezed by mangle after immersion.

The temperature of the treatment liquid is 5 to 80 ° C., especially 10
The temperature is preferably -50 ° C, and when dipping and squeezing, the amount of the fibrillating agent held by the cloth is preferably 1 to 50% by weight (based on the weight of the cloth).

Then, the woven fabric in the state of being provided with such a fibrillating agent is brought into contact with a raising member having a hard rough surface to raise the fibers, and the raising is performed in a state where the polyamide is swollen (during fibrillation). Or, after fibrillation, the polyamide may be contracted,
You may use these together.

As the raised member having a hard rough surface, a material obtained by spraying powder such as stainless steel or ceramic having a particle size of 50 to 200 μm onto an appropriate member, or commonly used abrasive particles of 50 to 200 μm are provided. Sandpaper or the like can be used.

As described above, in the method of the present invention, the raising process is performed by the raising member at the time of the fiber-opening fibril formation by the fibrillating agent. When the woven fabric is brought into contact with the raising member in the state where the fibrillating agent is applied, the contact between the fabric and the raising member is softened by the fibrillating agent applied to the fabric, and the contact with the raising member causes the fabric to come into contact. The strength of the fabric does not decrease, and the condition for raising the fabric by contacting it with the fabric raising member can be easily set.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

[0020]

【Example】

Example 1 A plain weaving machine using a warp (75 denier polyethylene terephthalate filament / 72 filaments / 1200 twists) and a weft (50 denier fibrillated composite fiber composed of polyamide and polyester / 25 filaments / 2100 twists) (density) ; 99 × 82)
Using an opening treatment apparatus shown in FIG. 1 as a fibrillating agent, an emulsion of benzyl alcohol 18% (emulsifier:
Nika Kagaku Sun Mall BK20Conc. 1.8% use)
Was used to open and fibrillate the fibers and raise the fibers.
Then, after washing and drying, the product of Example 1 was obtained.

In FIG. 1, (1) is a woven fabric, and (2)
Is a fibrillating agent, (3) is mangle, (4) is a fixed ironing member (doctor knife) that promotes fibrillation, (5) is a roll, and (6) is air for swelling the polyamide. Ring bath, (7) roll, (8) roll (raised member) sprayed with ceramic powder having a particle size of 100 μm, (9) hot water treatment bath for shrinking polyamide, (10) roll, ( 11) is a roll (raised member) obtained by spraying a ceramic powder having a particle size of 100 μm.

Example 2 A product of Example 2 was obtained by carrying out the same treatment as in Example 1 except that the raising member (8) of the air ring tank (6) was not used.

Example 3 In Example 1, the raising member (1) of the hot water treatment tank (9) was used.
The same process as in Example 1 was performed except that 1) was not used,
The product of Example 3 was obtained.

The products obtained in the examples have an ultra-thin raised touch, and the effect is as follows: Example 1> Example 2>
The sequence was as in Example 3.

[0025]

As described in detail above, in the method for producing a napped woven fabric according to the present invention, the woven fabric in the state where the fibrillating agent is applied is brought into contact with the napped member having a hard rough surface to nap the woven fabric. Since the contact between the woven fabric and the raising member is softened by the fibrillating agent applied to the fabric, the strength of the fabric is less likely to decrease due to the contact with the raising member, and the fabric is treated as the raising member. The setting range of the conditions for raising the fabric by contacting it has been widened, and the fabric can be easily raised.

[Brief description of drawings]

FIG. 1 is a schematic side view of an opening processing apparatus used in an embodiment of the present invention.

[Explanation of symbols]

 1 Woven fabric 2 Fibrillating agent 3 Mangle 4 Ironing member 5 Roll 6 Air ring tank 7 Roll 8 Raising member 9 Hot water treatment tank 10 Roll 11 Raising member

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Claims (1)

[Claims] 1. A fibrillated composite fiber woven fabric comprising polyamide and polyester is provided with a chemical capable of swelling polyamide, and the woven fabric in the state of being provided with the chemical is brought into contact with a raised member having a hard rough surface. A method for producing a raised fabric, comprising raising the fabric.