JPH07126919A - Pile raw yarn for electric transplantation - Google Patents

Abstract

PURPOSE:To obtain the subject raw yarn useful for obtaining electrically transplanted products comprising favorable ultrafine fibers, consisting of splittable fibers produced by conjugating a hot water-soluble polymer component and a hot water-insoluble polymer component dyeable at normal pressures in specific mode. CONSTITUTION:The objective pile raw yarns consist of splittable fibers produced by confluently conjugating a hot water-soluble polymer component (e.g. 5-sodium sulfoisophthalate-copolymerized polyester) and a hot water-insoluble polymer component dyeable at normal pressure (e.g. a polyester modified so as to be dyeable with cationic dyes by copolymerizing e.g. a polyalkylene glycol). At least part of the hot water-soluble polymer component represents the surface of the fibers, and both hot water treatment and dyeing after electric transplantation can be conducted at <100 deg.C without the need for using any organic solvent or strong alkali. The ultrafine piles of the resultant electrically transplanted products are excellent both in denseness and uniformity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile yarn for electric flocking, which can be used for electric flocking of ultrafine fibers having a high density, a good focusing property, and a good coloring property.

[0002]

2. Description of the Related Art Products obtained by statically flocking fibers obtained by cutting pile raw yarns into a base fabric with an adhesive agent are used for various purposes, but are extremely fine fibers with excellent surface quality and tactile sensation. Various developments have been made in the past for electric flocking products.

As a method for flocking ultrafine fibers, there is known a means for flocking bicomponent composite fibers, and then dissolving and removing one component or swelling and dividing treatment to obtain ultrafine fibers.

However, these one component is dissolved and removed,
Alternatively, chemical agents had to be used for the swelling division treatment. For example, JP-A-59-76975 and JP-A-60-
As disclosed in Japanese Patent Laid-Open No. 155745, when polystyrene is used as the sea component, trichlene is necessary for dissolving and removing the sea component after flocking. When nylon 6 is used as the sea component, formic acid is required to dissolve and remove the sea component after the flocking, and when swelling the nylon 6 with the composite fiber of polyester and nylon 6 to divide it,
Benzyl alcohol was needed. The handling of these chemicals is dangerous and requires special equipment for dissolution removal or swelling separation treatment. For this reason, there are problems in terms of worker safety and health and manufacturing costs. Further, the use of these chemicals after flocking has a drawback in that the adhesive used for flocking piles is aged or swollen to cause pile loss, or it is embrittled to impair the product texture.

On the other hand, in order to improve the above-mentioned drawbacks, a technique in which a composite fiber made of a water-soluble high-molecular polymer is used as a pile raw yarn to enable removal of an aqueous system is disclosed in JP-A-63-84668. ing. However, since water-soluble high-molecular weight polymers are soluble in water at room temperature, they can be made into ultrafine fibers when the oil emulsion is applied in the spinning process, when the liquid bath is stretched, and when the aqueous solution is processed in the flocking process. There was a stalemate. In addition, satisfactory results were not obtained, such as dyeing at high temperature, which impairs workability and impairs product quality. In other words, there has been a limit to the provision of stable ultrafine fiber electric flocking products.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pile yarn for electric flocking, which can obtain a good electric flocked product of ultrafine fibers without the above-mentioned drawbacks of the prior art.

[0007]

The object of the present invention is a composite fiber comprising at least two components, which is a hot water-soluble polymer component and is insoluble in hot water and dyeable under normal pressure. A pile for electro-implantation, comprising a certain other polymer component, and at least a part of the hot water-soluble polymer component is a comminuted fiber which is joined and composited so as to form a fiber surface. Achieved by the raw yarn.

The present invention will be described in detail below. First, the thinnable fiber according to the present invention will be described. The micronizable fiber in the present invention is composed of a polymer of at least two components,
It has a known sea-island type or divided type cross-sectional shape.

One component of the micronizable fiber is a hot water-soluble polymer that is resistant to melt spinning and is soluble in hot water. As the hot water-soluble polymer, known polymers can be applied and are not particularly limited. Particularly preferable examples include various polyesters copolymerized with 5-sodium sulfoisophthalic acid and the like, for example, the polymers of A and B below. A. The main acid component is terephthalic acid, the other acid components are 8 to 15 mol% 5-sodium sulfoisophthalic acid, and 5 to 40 mol% isophthalic acid, and the main diol component is a copolyester composed of ethylene glycol. A copolyester.

B. The main acid component is terephthalic acid, the other acid components are 1 to 15 mol% 5-sodium sulfoisophthalic acid, and 20 mol% or less isophthalic acid, and the main diol component is ethylene glycol adduct of bisphenol A with ethylene oxide. A copolyester consisting of. These polymers are preferable because they can withstand high temperature melt spinning, do not dissolve in room temperature water, easily dissolve in hot water, and are inexpensive.

Next, another polymer component of the present invention, which is capable of being dyed under atmospheric pressure, of the thinnable fiber will be described. As the polymer component, a polymer which can be dyed under normal pressure and which can be melt-spun can be optionally applied. Here, it is important that it is dyeable under normal pressure. Atmospheric pressure dyeing as used herein means that practical dyeing can be carried out without the addition of carriers, swelling agents and other auxiliary agents. The addition of auxiliaries causes drawbacks in cleaning complexity and environmental hygiene. In addition, conventional high-temperature and high-pressure dyeing causes the piles that have been flocked uniformly to become tired, and the insufficient heat resistance of adhesives and base fabrics causes the piles to fall off and the texture to harden, resulting in impaired product quality. I can't get it. Preferable examples of such a polymer component include polyester modified with cation dyeability by copolymerizing 5-sodium sulfoisophthalic acid and the like, and various polyamides such as the polymer of the following A. A. The main components are terephthalic acid and ethylene glycol, and 1.5 to 5.5 mol% of 5 with respect to all acid components.
A copolyester which is a copolyester containing sodium sulfoisophthalic acid and / or 1 to 10% by weight of the total polymer of a polyalkylene glycol or a derivative thereof.

The above-mentioned polymer component may optionally contain additives such as a matting agent, a stabilizer, an antistatic agent and a flameproofing agent.

A preferred method for producing the thinnable fiber in the present invention will be described. First, the hot water-soluble polymer and the other polymer are independently melted, and then the hot water-soluble polymer forms a fiber surface at least partially, for example, the hot water-soluble polymer is So that the other polymer becomes on the island,
Alternatively, another polymer is merged so that the hot water-soluble polymer is divided, and the polymer is discharged from the discharge hole of the spinneret to form a composite yarn.

Others are not limited as long as the above-mentioned manufacturing method of the thinnable fiber is satisfied,
Any composite yarn making method can be applied. And as such a method, a so-called core-sheath method, polymer array method, and division method are particularly preferable. Further, such other polymer may be dyed under normal pressure, and may take a so-called three-component form in which a polymer having a higher degree of polymerization is used as a core for reinforcement as long as the color developability is not impaired. The cross-sectional shape of the fiber is not particularly limited, and any one can be applied.

The composite fiber discharged from the discharge hole of the spinneret in the above method may be drawn at a high speed to be a practical fiber as it is, or may be drawn at a relatively low speed and further drawn to be a practical fiber. Good.

In the micronizable fiber formed from the hot water-soluble polymer of the present invention and another polymer, the component ratio of the hot water-soluble polymer is 40% by weight or less. It is more preferably 5 to 30% by weight. If it is less than 5% by weight, it tends to be difficult to maintain the desired shape of the composite cross section. on the other hand,
If it exceeds 40% by weight, the strength of the composite fiber may be lowered, the process passability may be deteriorated, and the product pile may have a low density and poor quality.

In the conjugate fiber of the thinnable fiber in the present invention, the single yarn fineness before thinning is preferably 1 denier or more and less than 50 denier. If it is less than 1 denier, the electric flocking property is inferior, and if it is 50 denier or more, the spinning property during cooling during melt spinning becomes unstable, or the flight property during electric flocking becomes a problem. Further, the thinnable fiber is a fiber that is divided into two or more fibers by removing the hot water-soluble component,
The single-filament fineness of the separated fibers is to be 0.5 denier or less. When it exceeds 0.5 denier, the unique luster and flexibility of the ultrafine fibers become insufficient.

Next, a method for manufacturing an electric hair transplant product will be described. First, the pile yarn of the thinnable fiber is cut into a desired length by a conventionally known method. The cut pile length depends on the purpose of the electric flocking product, the thickness of the fibers, and the flocking conditions of the cut pile, but is preferably 0.5 m.
It is m or more and 30 mm or less, more preferably 10 mm or less. If it is less than 0.5 mm, it is too short, and it is difficult to exhibit the soft feeling, unique luster and pliability, which are the effects of the ultrafine fiber pile product, and if it exceeds 30 mm, the pile collapses and becomes entangled to lower the pile quality. Then, after scouring the cut pile with an aqueous solution of a nonionic activator, sodium silicate,
It is treated with a treatment liquid containing colloidal silica and potassium isopropyl phosphate, dehydrated and dried.

On the other hand, as the substrate for implanting the cut pile of the present invention, many materials such as filamentous materials, woven and knitted materials, non-woven materials, and sheet materials such as resins are used. An adhesive for adhering the pile raw yarn is applied to this base. As the adhesive, acrylic emulsion, ether type or ester type polyurethane or the like is used. The substrate and the adhesive are not particularly limited, and known ones can be used. As a method for implanting the cut pile on the substrate coated with the adhesive, a conventionally known method is used. In particular,
Electric flocking by the up method is preferably used.

The cut pile made of the raw yarn of pile of the present invention, which has been electroflocked, is first treated with hot water to carry out a treatment for removing hot water-soluble components. Hot water temperature is 8
0-98 degreeC is preferable. This dissolution treatment is performed by using a usual higher-order processing step, that is, a desizing and scouring step, and a dyeing method such as wince or circular. In the dissolution treatment, it is possible to more stably dissolve and remove by using a water softening agent such as tripolyphosphoric acid. In addition,
It is particularly preferable to use an auxiliary agent for desizing, that is, a surfactant, an anti-redeposition agent, a weak alkaline agent, or the like. Then, a dyeing finish is performed. Dyeing is performed at 98 ° C or lower. In this way, the high-order processing process can be performed at a temperature of less than 100 ° C and can be processed without using chemicals such as organic solvents and strong alkalis. Including what you can do without sacrificing
No need for special equipment such as pressure sealed type or local exhaust,
There are no safety, environmental and health problems.

[0021]

The present invention will be described in detail below with reference to examples. Example 1 Copolyethylene terephthalate chips (melt viscosity at 290 ° C.) containing 12 mol% 5-sodium sulfoisophthalic acid as a hot water-soluble polymer, and 25 mol% isophthalic acid, and 0.05 wt% titanium oxide. (1,500 poise, softening point: 130 ° C.), which was dried under reduced pressure at 100 ° C. for 10 hours, was used. Copolymerized polyester chips containing 5 mol% 5-sodium sulfoisophthalic acid as another polymer (melt viscosity at 290 ° C .:
1800 poise, softening point: 250 ° C.) and dried under reduced pressure at 150 ° C. for 6 hours were used. Each was melted (290 ° C) with a screw extruder, and the hot water-soluble polymer became the sea component,
The other polymer is sent as an island component to the sea-island type spinneret by a gear pump and is subjected to complex spinning. The sea component ratio is 20%, the island component ratio is 80
%, The number of islands was 16 and the fineness was 11.5 denier. The undrawn yarn thus obtained was drawn by passing through a hot plate at 90 ° C. to obtain a 3.8 denier pile yarn for electric flocking. No yarn breakage occurred during spinning or drawing.

The obtained pile yarn for electric flocking was cut into 1 mm, the cut pile was scoured with an aqueous solution containing a nonionic activator, and then sodium silicate, colloidal silica,
A pile for electric flocking was obtained by immersing in a treatment liquid containing potassium peroxophosphate and dehydration and drying. The surface electric resistance of this pile was 2 × 10 ⁸ Ω · cm.

A plain fabric of acrylic woolen yarn (weight per unit area: 120 g / m ² ) was used as a base fabric for flocking, and 200 g of an acrylic emulsion (solid content: 30%) was used as an adhesive on one side of the fabric.
/ M ² was applied with a knife coater, and electric flocking was performed by the up method (voltage 30,000 V, distance between electrodes 10 cm). There was no problem with the flight properties of the pile, and the flocking was completed successfully. The pile flock density was 140 g / m ² .

The flocked hair is dried at 120 ° C., 150
After curing at ℃, put it into the Wins dyeing machine. 0.1% NaOH and 0.2 g tripolyphosphoric acid as scouring aids
/ L and 2 g / l of a surfactant were added, and hot water treatment was performed at 90 ° C for 10 minutes. Then, wash with hot and cold water, and further add 1% of cationic dye (Estrol Scarlet G)
f, pH of bath: 3, bath ratio: 1: 100, dyeing at 95 ° C. for 45 minutes, washing, and then finishing with silicone softener. Almost no pile loss was observed in these processing steps.

The obtained processed product has a bright red color,
A pile of 0.19 denier ultrafine fibers was densely and firmly planted, and had a velvety tone with a good feel. Examples 2 to 3 and Comparative Examples 1 to 3 According to Example 1, as shown in Table 1, a combination of polymers was used to obtain a thinnable fiber, and a processing evaluation of a pile raw yarn for electric flocking was performed. .

[0026]

[Table 1] The pile flocked products having the respective compositions shown in Table 1 were processed and evaluated according to Example 1.

Examples 2 and 3 exhibited a bright red color similar to that of Example 1, and had the gloss and soft hand peculiar to the ultrafine fibers. In addition, there was no problem such as pile loss in the working process.

On the other hand, in Comparative Examples 1 and 2, the pile flocking density was densely and firmly flocked, and the touch was good, but the coloration was poor and the commercial value was low. Further, in Comparative Example 3, the color developability was good, but the pile pile was large.

Example 4 In Example 1, as another polymer, nylon 6 (28
Melt viscosity at 0 ° C: 960 poise, softening point: 180 ° C)
Was used and spinning and drawing were carried out in the same manner as in Example 1. The spinnability was good. The obtained drawn yarn was cut into 1.0 mm as a pile raw yarn for electroplantation. On the other hand, nylon 6 coated with polyester polyurethane adhesive
Of 210 denier-30 filament of No. 2 was used as the core yarn, and the cut pile was electro-implanted (voltage 30,000 V, distance between electrodes 1
0 cm). Flocking was completed satisfactorily without any problems with the flight properties of the pile, and a so-called flocky yarn (2500 denier) was obtained in which the pile was flocked around the core yarn with an adhesive.

Next, this flockey yarn was heated at 120 ° C.
Then, dry it with a scalpel, put it in a cassel dyeing machine, add 0.1% NaOH as a scouring aid, 0.2 g / l tripolyphosphoric acid, and 2 g / l surfactant, and perform hot water treatment at 90 ° C for 10 minutes. It was Then, rinse with hot water and add acid dye.
Dyeing was carried out at 0 ° C. for 45 minutes, and after washing, a softening agent was applied to finish. Almost no pile loss was observed in these processing steps.

This processed product had a very characteristic gloss and soft touch as a flocky yarn of ultrafine fibers. Further, it is most suitable for interior seats with a high-class feeling by subjecting it to a woven fabric or a knitted fabric before being subjected to hot water treatment or dyeing finish, and then subjecting it to processing.

[0032]

EFFECTS OF THE INVENTION An electric flocked product using the pile raw yarn of the present invention can be processed at a low temperature without using an organic solvent or a chemical agent, and the following effects can be obtained. (1) No special processing device is required, there is no safety and health problem in the working environment, and the cost is advantageous. (2) It can be finished without damaging the base cloth, the adhesive, the pile and the like. For this reason, it is possible to obtain a processed product without hardening the texture due to the embrittlement of the material and without sagging of the pile. (3) The obtained processed product has the fineness and homogeneity of the ultrafine pile, has the luster peculiar to the ultrafine fiber, and has a good feel to the touch, and is suitable for interior materials, sheet materials, high-grade clothing, and the like.

Claims (6)

[Claims] 1. A composite fiber comprising at least two components, which comprises a hot water-soluble polymer component and another polymer component which is insoluble in hot water and dyeable under atmospheric pressure. A pile raw yarn for electric flocking, characterized in that at least a part of a hot water-soluble polymer component is a thinnable fiber that is merged and composited so as to form a fiber surface. 2. The proportion of the hot water-soluble polymer in the thinnable fiber is 40% by weight or less, and the thinnable fiber is substantially dissolved in hot water to obtain a hot water-soluble polymer. The pile yarn for electric flocking according to claim 1, wherein the single yarn fineness of the fibers after the coalescence is removed is 0.5 d or less. 3. The pile yarn for electric flocking according to claim 1, wherein the hot water-soluble polymer component is one of the following components. A. The main acid component is terephthalic acid, the other acid components are 8 to 15 mol% 5-sodium sulfoisophthalic acid, and 5 to 40 mol% isophthalic acid, and the main diol component is a copolyester composed of ethylene glycol. A copolyester. B. The main acid component is terephthalic acid, the other acid components are 1 to 15 mol% 5-sodium sulfoisophthalic acid, and 20 mol% or less isophthalic acid, and the main diol component is ethylene glycol adduct of bisphenol A with ethylene oxide. A copolyester consisting of. 4. The pile yarn for electric flock according to claim 1, wherein the other polymer component which is dyeable under atmospheric pressure is the following polyester. A. The main components are terephthalic acid and ethylene glycol, and 1.5 to 5.5 mol% of 5 with respect to all acid components.
A copolyester which is a copolyester containing sodium sulfoisophthalic acid and 1 to 10% by weight, based on the total polymer, of a polyalkylene glycol or a derivative thereof. 5. The pile yarn for electro-implantation according to claim 1, wherein the other polymer component which is dyeable under atmospheric pressure is polyamide. 6. A flocky yarn comprising the pile yarn for electric flock according to any one of claims 1 to 5.