JPH08232172A - Production of pile for flocking - Google Patents

Abstract

PURPOSE: To obtain a pile for flocking having excellent water-repellency and electrodeposition performance by dyeing a fiber, subjecting the fiber to simultaneous water-repellent treatment and electrodeposition treatment and cutting the treated fiber to a prescribed length. CONSTITUTION: A mixed treating liquid is prepared by mixing a water-repellent treatment liquid composed of e.g. a silicone-based liquid or a fluorine-based liquid with an electrodeposition treatment liquid such as an aqueous solution of ammonium chloride or a polyaniline at a concentration ratio of 1.0-3.0. A polyamide filament dyed to a prescribed hue is immersed in the mixed treatment liquid to effect the simultaneous water-repellent treatment and electrodeposition treatment. The treated fiber is cut to a prescribed length to obtain the objective pile for flocking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a pile for flocking having water repellency.

[0002]

2. Description of the Related Art As a method for imparting water repellency to a flocked body in which piles are flocked on a base material, two methods are conventionally known.

The first method is a method of implanting a pile for flocking on the surface of a base material and then subjecting the pile to a water repellent treatment. This is the method commonly used at present.

The second method is a method of applying water repellent treatment to the pile itself before flocking. As this type of conventional technique, for example, one disclosed in Japanese Patent Laid-Open No. 3-146723 is known. In this publication, an unstretched fiber is impregnated with a water-repellent agent, and then the fiber is stretched, then heat-treated, dipped in a dyeing solution for dyeing, and further dipped in an electrodeposition treatment solution for electrodeposition treatment. After that, a method of manufacturing a pile for hair transplant by cutting the fiber into a predetermined length is disclosed.

[0005]

However, in the first method of subjecting the pile after the flocking to the water-repellent treatment, the step of applying the water-repellent treating agent and the drying of the water-repellent treating agent are performed in manufacturing the flocked body. A separate process is required, resulting in an increase in man-hours.

On the other hand, an example of the second method is disclosed in Japanese Patent Laid-Open No.
In the method disclosed in Japanese Patent No. 146723, since the water-repellent treated fiber is immersed in the electrodeposition treatment liquid to perform the electrodeposition treatment, the surface of the fiber may be covered with the electrodeposition treatment liquid. , The water-repellent performance of the pile for flocking after manufacturing is deteriorated.

Further, since the electrodeposition treatment is carried out after the water repellent treatment, the water repellent layer on the surface of the fiber during the electrodeposition treatment makes it difficult for the electrodeposition treatment agent to adhere to the surface of the fiber. The charging performance of the pile for flocking after manufacture is deteriorated. Therefore, the flocked state of the flocked body deteriorates.

In manufacturing the pile for hair transplantation,
Since the water repellent treatment process is performed separately, the number of steps is increased.

Further, since the water-repellent treated fiber is dipped in a dyeing solution for dyeing, the surface of this fiber may be covered with the dyeing solution. Water repellent performance is worse.

Therefore, the invention of claim 1 provides a method for manufacturing a pile for flocking, which can shorten the number of manufacturing steps, and has good water repellency of the pile for flocking and good charging performance. This is the first technical issue.

The second aspect of the present invention is to provide a method for producing a pile for flocking which does not deteriorate the water repellency of the pile for flocking even when a dyeing step is performed.
It is a technical subject of.

[0012]

The technical means (referred to as the first technical means) taken in the invention of claim 1 in order to solve the above-mentioned first technical problem is a water repellent treatment liquid and an electrode. That is, the fibers were dipped in a mixed liquid containing the landing treatment liquid to carry out the water repellent treatment and the electrodeposition treatment at the same time, and then the fibers were cut into a predetermined length to produce a pile for flocking.

Here, as the fiber, polyamide fiber,
Polyester fiber, polypropylene fiber or the like can be used. As the water repellent treatment liquid, a silicone-based or fluorine-based treatment liquid can be used. An ammonium chloride aqueous solution (hydrophilic), polyaniline (hydrophobic), or the like can be used as the electrodeposition treatment liquid.

When an aqueous solution of ammonium chloride is used as the electrolytic treatment liquid, the water repellent does not dissolve as it is.
It is necessary to add a surfactant to lower the surface tension of water and dissolve the water repellent. Further, when polyaniline is used as the electrolytic treatment liquid, the water repellent agent is dissolved without adding the surfactant, so that it is not necessary to add the surfactant.

In the first technical means, the second
In order to solve the above technical problem, it is preferable to dye the fiber before performing the water repellent treatment and the electrodeposition treatment.

In the first technical means, in order to further improve the water repellency and charging performance of the pile for flocking,
The concentration ratio of the water repellent treatment liquid to the electrodeposition treatment liquid in the mixed liquid is
It is preferably set to 1.0 to 3.0. Here, if the concentration ratio is less than 1.0, the charging performance is good, but the water repellency performance may be poor. On the other hand, when the concentration ratio is greater than 3.0, the water repellency performance is good, but the charging performance may deteriorate.

[0017]

According to the first technical means, since the water repellent treatment and the electrodeposition treatment are simultaneously performed, the surface of the fiber is covered with the mixed layer of the electrodeposition layer and the water repellent layer, and only the electrodeposition layer is formed. Alternatively, it is possible to avoid covering with only the water repellent layer. Therefore,
As compared with the prior art, the pile of flock after manufacturing has good water repellency and also good charging performance.

Further, since the water repellent treatment and the electrodeposition treatment are carried out at the same time, the number of steps can be shortened as compared with the case where these treatments are carried out in separate steps as in the prior art, so that the number of manufacturing steps can be shortened. be able to.

In the first technical means, if the fibers are dyed before the water repellent treatment, it is possible to prevent the water repellent performance from being deteriorated due to the dyeing, so that the water repellent performance of the flocking pile is further improved. Become.

In the first technical means, the concentration ratio of the water repellent treatment liquid in the mixed liquid to the electrodeposition treatment liquid is 1.0 to.
When it is 3.0, the water repellent performance and the charging performance of the pile for flocking are further improved.

[0021]

EXAMPLES Specific examples will be described below.

[Example 1] A long fiber made of polyamide fiber (manufactured by Toyo Rayon Co., Ltd.) was drawn and then dyed. Next, a silicone water repellent treatment liquid, an electrodeposition treatment liquid comprising an ammonium chloride aqueous solution and X70-92 (manufactured by Shin-Etsu Chemical;
The long fibers were immersed in a mixed liquid containing a surfactant composed of a component: fluoropolyether-modified silicone), and water repellent treatment and electrodeposition treatment were simultaneously performed. Then, this long fiber was cut into a predetermined length to obtain a pile for flocking, which is a short fiber.

As shown in FIG. 1, a urethane adhesive was applied to the surface of the substrate 1 to form an adhesive layer 2, and then a pile 3 for flocking was flocked.

[Example 2] Example 2 except that the water repellent treatment liquid was a fluorine treatment liquid and Unidyne DS202 (manufactured by Daikin Industries; component: perfluoroalkyl quaternary ammonium salt) was used as the surfactant. The same as 1.

The piles for flocking of Examples 1 and 2 were evaluated for water repellency and flocking state (electrodeposition property). Here, in the water repellency test, the water repellency angle was measured using a water repellency angle meter, and regarding the hair-implanted state, the hair-implanted state of the pile 3 formed on the substrate 1 was visually confirmed. Table 1 shows the test results. In Table 1, the evaluation of the water repellency is ◯ means that the water repellency is equal to or more than the water repellency of the water repellent treated after the flocking, and x means less than the same. .

A comparative example will be briefly described.

Comparative Example 1 A long fiber made of polyamide fiber (manufactured by Toyo Rayon Co., Ltd.) was dipped in a silicone water repellent treatment solution to be water repellent, and then the long fiber was stretched. Then, it heat-processed and dyed. Next, the long fibers were immersed in a mixed solution containing an electrodeposition treatment liquid composed of an aqueous solution of ammonium chloride to perform electrodeposition treatment. Then, this long fiber was cut into a predetermined length to obtain a pile for flocking, which is a short fiber. The subsequent steps are the same as in Example 1.

Comparative Example 2 A long fiber made of polyamide fiber (manufactured by Toyo Rayon Co., Ltd.) was drawn and then dyed. Then, the long fibers were immersed in an electrodeposition treatment solution containing an aqueous solution of ammonium chloride to perform electrodeposition treatment. Next, the long fibers were immersed in a silicone-based water repellent treatment liquid to perform water repellent treatment. Then, this long fiber was cut into a predetermined length to obtain a pile for flocking, which is a short fiber. The subsequent steps are the same as in Example 1.

With respect to the hair-implanting piles of Comparative Examples 1 and 2, water repellency and hair-implanting state (electrodeposition property) were obtained in the same manner as in Examples 1 and 2.
The test was evaluated. The test results are shown in Table 1.

[0030]

[Table 1]

As is clear from Table 1, the first and second embodiments are shown.
The pile 3 for flocking on the base material 1 in 3 is excellent in water repellency as compared with Comparative Example 1 in which the water repellent treatment is performed before the electrodeposition treatment. It is considered that this is because the water-repellent layer is surely present on the surface of the pile 3 for flocking.

Further, compared to Comparative Example 1 and Comparative Example 2 in which the water repellent treatment is performed after the electrodeposition treatment, the hair transplantation condition is better. this is,
It is considered that the electrodeposition treatment liquid surely adhered to the surface of the pile 3 for flocking at the time of flocking, and the chargeability was good.

[0033]

The invention of claim 1 has the following effects.

Since the water repellent treatment and the electrodeposition treatment are carried out at the same time,
Since the surface of the fiber is covered with the mixed layer of the electrodeposition layer and the water repellent layer, it is possible to avoid covering with only the electrodeposition layer or the water repellent layer. Therefore, as compared with the prior art, the water-repellent performance of the pile for flocking after manufacturing is improved and the charging performance thereof is also improved.

Further, since the water repellent treatment and the electrodeposition treatment are carried out at the same time, the number of steps can be shortened as compared with the case where these treatments are carried out in separate steps as in the prior art, so that the number of manufacturing steps can be shortened. be able to.

The invention of claim 2 has the following effects.

Since the fibers are dyed before the water repellent treatment, it is possible to prevent the water repellent performance from being deteriorated by the dyeing, so that the water repellent performance of the flocking pile is further improved.

The invention of claim 3 has the following effects.

Since the concentration ratio of the water repellent treatment liquid to the electrodeposition treatment liquid in the mixed liquid is set to 1.0 to 3.0, the water repellent performance and the charging performance of the pile for flocking are further improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a hair transplant product in which a pile for hair transplant according to the present embodiment is formed.

Claims (3)

[Claims] 1. Flocking is performed by immersing fibers in a mixed solution of a water repellent treatment liquid and an electrodeposition treatment liquid to simultaneously perform water repellent treatment and electrodeposition treatment, and then cutting the fibers to a predetermined length. A method for manufacturing a pile for flocking for producing a pile for hair. 2. The method for producing a pile for flocking according to claim 1, wherein the fiber is dyed before the water repellent treatment and the electrodeposition treatment. 3. The concentration ratio of the water repellent treatment liquid to the electrodeposition treatment liquid in the mixed liquid according to claim 1, which is 1.0 to 3.0.
A method for manufacturing a pile for flocking.