JPS63104830A - Floc processed goods and manufacture thereof - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flocked product with a good surface feel and appearance.

[Conventional technology]

In the past, many proposals have been made for manufacturing methods for flocked products, but the surface texture of flocked products has not been improved.

In order to improve the appearance, it has been proposed that the surface be flocked with single-fine fibers. For example, Tokuko Sho 46-2782
The publication proposes a flocking method for the surface of the pile, in which a pile of multicore sheath-type composite fibers is adhered to a base material using a thermosetting acrylic resin as an adhesive, and the sheath component is dissolved and removed to form fine fibers. Also.

Japanese Unexamined Patent Publication No. 4)5-62265 proposes that a pile of splittable conjugate fibers is flocked onto a fiber base material, and treated with a swelling agent to form a fine fiber pile surface. Furthermore, the relationship between the pile length and the fineness of the fine fibers is specified.1 For example, in Japanese Patent Application Laid-Open No. 59-76975, piles with a single yarn fineness of less than 0.5 denier and a pile length of less than 0.711 m are flocked. . In JP-A-59-100784, piles having a single yarn fineness of 0.05 to 1.0 denier are flocked.

In JP-A No. 58-7342, the single yarn fineness is 0.1 to 0,
7 denier, pile length 0.7-3. Flocked Orrrm pile. JP-A No. 60-154051 proposes flocked products made using extractable fibers flocked with piles having a single yarn fineness of u, o u o i denier or more, and a pile length of 3 kaku or more.

Furthermore, it is disclosed in Japanese Patent Application Laid-Open No. 56-532 that only the upper part of the flocked pile is divided by using split type fibers.
This is proposed in Publication No. 40.

In addition, when producing flocked products using extractable fibers or splittable fibers, it is necessary to use an adhesive that can withstand the fine fiber treatment of the fibers.
In Japanese Patent No. 281, flocking is performed by applying a solvent-based adhesive to a base material composed of a combination of a solvent-based polyurethane and a compound having two or more aziridine groups or blocked incyanate groups. Furthermore.

In order to impart flexibility, JP-A-59-127750 proposes forming a non-adhesive portion between the adhesive and the base material.

[Problem that the invention seeks to solve]

In order to improve the appearance and feel of conventional flocked products, efforts have been made to create a pile surface of ultra-fine fibers. For this purpose, flocked products using piles of sea-high monk or multi-core sheath type composite fibers and then dissolving and removing the sea component or sheath component to create ultra-fine fibers have insufficient adhesive fluff fixation. 11. The abrasion resistance of the pile surface decreases, causing fluff to fall off or slip off. Ultra-fine fibers provide a good feel, but the fluff strength decreases and the fluff easily breaks.

Color development deteriorates. There are problems such as a decrease in the compressive elasticity of the fluff and poor recovery of crushed fluff.

In addition, it is possible to improve the fluff crushability of flocked products obtained by flocking using a pile of split-type fibers and then dividing them into fine fibers compared to flocked products obtained using a pile of extractable fibers. However, the texture, texture, and appearance of the flocked product as a whole were poor, with poor texture and hand-drawing effects.

(Means for Solving the Problems) The present invention has no tangles of fluff, has good compressive elastic recovery properties on the flocked surface, and has a fluffy and warm feel.Also, has high abrasion resistance and is free from fluff breakage. Our goal is to provide flocked products with no defects.

That is, in the present invention, composite fibers consisting of an elastic polymer fiber component and an inelastic polymer fiber component are flocked as a pile, and at least the tip of the pile is separated into fine fibers of the elastic polymer and fine la fibers of the inelastic polymer. The relationship between the pile length of fine fibers of elastic polymer tLl and the pile length of fine fibers of inelastic polymer Ia III + 61 is L≦
This is a flocked product that satisfies the weight of 0.9 g and is characterized in that at least the adhesive-embedded portion of the pile is undivided for 1 hour.

Furthermore, one aspect of the present invention is to dissolve an elastic polymer and an inelastic polymer in separate melting systems, and then spin them into a split composite fiber using a bonded spinneret in which each polymer component forms at least two fine fibers, and then draw the fiber. A pile with a length of 0.5 to 5.0 mm is made using the composite fibers obtained by heat treatment if necessary, and the pile is flocked to the surface of the base material coated with an adhesive, and the pile is fixed.

At least the tip of the pile is divided, and the pile length (L) of the elastic polymer faI#L fiber of the divided portion is related to the pile length (ll) of the a fiber of the inelastic polymer, L≦0. This is a method for producing flocked products, which is characterized by performing a dividing process until a length satisfying .9 liters is obtained, and then drying.

The method for producing flocked products of the present invention involves first melting the split-type composite fibers for pile in separate melting systems for an elastic polymer and an inelastic polymer, and then dissolving each other's polymer streams at the spinning head or spinneret, for example. Each constituent polymer component of a multilayered structure, a radial structure, etc. forms at least two fine fibers, and at least a part of the bonded interface passes through the fiber surface and is spun into a fiber structure that can be divided into one piece. The spinning method is melt spinning,
A) Any spinning method, dry spinning or wet spinning, may be used, and the spinning method and spinning conditions are not particularly limited as long as each component of the elastic polymer and inelastic polymer maintains a bonded state without splitting until the time of flocking. The composite fiber obtained by spinning is drawn and, if necessary, heat-treated to obtain a composite fiber having a fineness of 2.5 to 30 deniers.

Next, the fibers are cut into fiber lengths of 0.5 to 5.0 to form piles.

Next, the pile is treated to flock, and then processed into woven fabrics, silk fabrics, non-woven fabrics, processed fiber sheets containing polyurethane, synthetic elastic polymers, etc., wood products, plastics, etc. Apply adhesive 1 to the surface of the base material of molded products, metal molded products, etc. For example, urethane adhesive based on urethane resin, acrylic ester adhesive, etc.
An emulsion type or solvent type adhesive selected from acrylic ester copolymer adhesives, acrylonitrile-butadiene copolymer adhesives, other rubber adhesives, vinyl acetate copolymer adhesives, etc. is applied. The amount of adhesive applied to the base material depends on the condition of the base material.

Although it changes depending on the pile length etc., the solid content is 20
~ls o y/d. If the amount of application is small, the length of the buried part of the pile will be short and the wear resistance will be poor.

The method of flocking piles onto the base material surface coated with an adhesive is to use a conventionally known flocking method, for example, an electrostatic flocking method, a mechanical flocking method, etc., and then to perform a fixing treatment.

The composite fibers of the pile flocked to the base material are then subjected to a process of dividing them into fine fibers of elastic polymer and fine fibers of inelastic polymer. The splitting process involves attaching a liquid that has a swelling effect on one of the polymers, but does not have an effect on the other polymer.

Treatment with hot air or steam, 10kg/
Split by treating with a water-based adult whose surface tension is adjusted to 40 dyne/cm or less, preferably 30 dyne/6+! or less. Preferably, the aqueous composition 1 has a surface tension adjusted to 40 d'fne/cm or less, such as carboxylic acid salts such as sodium laurate-sodium stearate, sodium oleate, etc. Higher alcohols, higher alkyl ethers.

Sulfate ester salts such as fatty acid esters. Sulfation part.

Anionic surfactant selected from alkylbenzene sulfonates, olefin sulfonates, phosphate ester salts, etc. A nonionic surfactant selected from polyethylene oxide, its adducts, fatty acid esters or alkyl ethers of polyhydric alcohols, etc. Furthermore, cationic surfactants or amphoteric surfactants can be used which have a lower surface tension and have the ability to peel and split the fibers. In this case, it is also possible to use a surfactant with functionality such as a fiber softening agent, a bactericidal agent, an antistatic agent, a water repellent, etc., and provide these functions at the same time as peeling and dividing the fibers. .

Others 1 Alcohols, glycerin, aliphatic carboxylic acids that lower the surface tension to less than 40 dyne/cm,
A carefully selected water-soluble compound selected from amines and ethers may be used. Select one or two types of these surfactants,
Use by dissolving in water. The concentration of surfactant is 0.05~
It is in the range of 5%. If it is less than 0.05%, no peeling and dividing effect can be obtained.

Moreover, if it exceeds 5%, it is not only wasteful without any difference in effectiveness, but also causes noticeable foaming at times. Further, the water temperature during treatment may be at room temperature, but it is also preferable to heat the water to 40 to 95° C. in order to accelerate the peeling and dividing speed. Furthermore, high-pressure jet water flow,
It is also preferable to apply mechanical stress such as kneading, beating, or rubbing the fiber sheet.

The degree of division of the composite fibers is determined not only by dividing at least the tip of the pile, but also by dividing the part of the fine fibers obtained by dividing into the pile length (L) of the fine fibers of elastic polymer and the fine fibers of inelastic polymer. Pile length (relationship with j?1? L≦0
．． The division process is performed until a length that satisfies 911 is obtained. This confirmed length varies depending on the pile length, but is generally the total length of ⅓ or more of the pile length excluding the portion buried in the adhesive. If the degree of division is not sufficient, the fine fibers of the elastic polymer will shrink due to the hand drawing effect due to the fluttering of fluff on the surface, but if the fine fibers do not shrink sufficiently, further heat treatment or treatment is required. to deflate. If the fine fibers of the elastic polymer do not shrink sufficiently, the pile surface will not have sufficient compressive elasticity, resulting in a lack of fullness. Disadvantages such as slightly increased surface frictional resistance arise.

A schematic diagram of the flocked product of the present invention is shown in FIG. In Figure 1, 1 is the base material, 2 is the adhesive layer, 3 is the divided ala fiber of the inelastic polymer, and 4 is the divided fine fiber of the elastic polymer, which is shorter due to shrinkage than the fine fiber of the divided inelastic polymer. It has become. 5 is a portion embedded in the adhesive layer, which is an undivided composite fiber portion. FIG. 2 is a schematic diagram of an example of the cross-sectional structure of a splittable conjugate fiber used for flocking.

Figure 2 (al is inelastic polymer 11 and elastic polymer 12
Fig. 2 shows an example in which the inelastic polymer 11 and the elastic polymer 12 alternately form a radial structure, Fig. 2+e shows an example in which the inelastic polymer 11 and the elastic polymer 12 have a radial structure. This is an example in which other spinnable polymers (elastic polymers or inelastic polymers) 13 are alternately arranged in a radial structure.

Examples of the elastic polymer constituting the concatenated embroidered fibers of the present invention include polyester diol, polyether diol, polyester ether diol, and polylactone diol having an average molecular weight of 500 to 3,000.

A polyurethane elastomer obtained by reacting at least one type selected from polymer diols such as polycarbonate diol, an organic diisocyanate, and a compound having two active hydrogen atoms. A polyester elastomer obtained by reacting at least one selected from the above polymer diols with an aromatic or/and aliphatic dicarboxylic acid. At least one selected from the above polymer diols.
At least one type of elastic polymer selected from polyamide elastomers obtained by reacting aromatic or/and aliphatic dicarboxylic acids with aromatic or/and aliphatic diamines, which can be melt-spun, dry-spun or It is an elastic polymer that can be spun by any of the wet spinning methods. On the other hand, examples of inelastic polymers include nylon-6, nylon-66, nylon-61O, nylon-11, nylon-12, aromatic or/and aliphatic diamines and aromatic or/and aliphatic dicarboxylic acids. Polyamides such as polyamides obtained by condensation polymerization. polyethylene terephthalate, polybutylene terephthalate,
Polyesters such as polydiethylene terephthalate or copolyesters whose main components are polydiethylene terephthalate. dol
l Polyolefins such as ethylene, polypropylene, polybutylene, or copolymerized polyolefins containing these as main components. It is at least one type of spinnable non-elastic polymer selected from polyvinyl alcohol, acrylonitrile copolymer, etc. The combination of an elastic polymer and an inelastic polymer is appropriately selected depending on the spinning method. For example, in the melt spinning method, polyester-polyamide elastomer, polyester-polyurethane elastomer, polyamide-polyester elastomer, polyolefin-polyamide elastomer, polyolefin-polyurethane elastomer, polyolefin-polyester elastomer, etc. are used, and in the dry spinning method or wet spinning method, acrylonitrile copolymer is used. - polyurethane elastomers, etc.

The flock products of the present invention are dyed as necessary.

Printing, embossing, water-repellent treatment, oil-repellent treatment, and other post-processing or post-treatment as necessary are performed to create flocked products.

〔Example〕

Embodiments of the present invention will be specifically described below with reference to Examples.

Note that parts and percentages in the examples are by weight unless otherwise specified.

Example 1 Polyester elastomer ta) and nylon-s IB
) in a weight ratio of A:B=30 near 0, A polymer 5
Using a bonded composite spinneret with pJ-B polymer 6,
Melt spinning was carried out at a spinning temperature of 250° C. to obtain a bonded conjugate fiber having a cross-sectional shape schematically shown in FIG. 2F&). This fiber was heat-stretched 2.5 times and then heat-set to have a single fineness of 4.
A denier composite fiber was obtained. This composite fiber has a length of 1.2
After cutting and scouring Mn, it was treated with an electrodeposition treatment solution consisting of sodium silicate, colloidal silica, and quaternary ammonium salt, and after dehydration, it was dried in a hot air dryer at 50°C to obtain a flocked pile.

Next, we used nylon tricot as the base material.

An adhesive composition solution prepared by mixing 50 parts of a solid content of a polyether-based polyurethane emulsion and 50 parts of a cross-linked acrylic resin emulsion as an adhesive was applied onto a nylon trim foot using a knife coating method, and then a flocked pile was applied. The amount of 100V was electrically flocked using the down method, and 12t
) for 15 minutes in a heating zone for drying and curing. Then, 70°C with the addition of 0.2% sodium oleate.
(surface tension: 31 dyne/cm ) for 2 minutes, and dried in a hot air dryer at 120°C. The obtained flocked product was divided into pile lengths close to the adhesive layer, and as a result of microphotograph measurements, the average length from the tip of the nylon-6 fine fibers to the surface of the adhesive layer was 0.9. The la darkness is 0.47 dr, the average length of the polyester elastomer fine fibers is 0.75 mm, and the average line spacing is 0.47 dr.
It was 28 denier.

Next, the flocked product was treated with metal complex dye 1.5% owf.
It was dyed with water, treated with quaternary ammonium salt and silicone oil, and then dried. The fluffy side of the dyed flock product was smoothed and finished with brushing and polishing.

The resulting product has a fluffy elasticity and warmth on the raised surface, and the surface abrasion strength measured by a taper abrasion tester showed no exposure of the base fabric even after 500 times of 11 abrasion tests, and the surface abrasion strength was determined by a floraking meter. There was no fluff shedding in the fluff shedding test.

For comparison, composite fibers were similarly spun using polybutylene terephthalate instead of polyester elastomer, and flocked products were produced in the same manner as in Example 1. The resulting product shows almost no change in pile length, and the raised surface has the same hand-painted effect as regular flocked products, but it lacks elasticity.

It lacked warmth, and the adhesive layer was exposed after 315 abrasion tests.

Example 2 The weight ratio of polytetramethylene ether polyurethane elastomer (C1 and spun-dyed polypropylene fl) is 0.
:D=40:60 by the spinning method of Example 1,
A bonded composite fiber with a fineness of 5 denier obtained by drawing in hot water and heat setting was cut into 1.5 pieces in length and refined, and then an electrolyte made of sodium silicate, colloidal silica, and quaternary ammonium salt was prepared. Treat with a stain treatment solution.

It was dehydrated and dried to make piles for flocking.

Next, using a nylon plain woven fabric as a base material, it was flocked and divided in the same manner as in Example 1 to obtain a flocked product of fine fibers. As a result of measuring the cross section of this flocked product using a microscopic photograph, it was found that the composite fibers were divided slightly above the adhesive layer, and the length from the surface of the adhesive layer to the tip of the fine fibers was the average length of the polyurethane elastomer fine fibers. The polypropylene fine fibers had an average length of 1.2 mm and an average fineness of 0.5 denier.

Next, the flocked product is dyed brown with a dye composition mainly composed of metal complex dyes, and the flocked product obtained by surface finishing has elasticity and warmth with a hand-painted effect on the raised surface, and is wear resistant. It had an excellent appearance and feel.

Example 3 Polyethylene adipate dicarboxylic acid with an average molecular Q of 2100 of terminal carboxylic acid obtained by condensation polymerization of adipic acid and ethylene glyfur was used as a soft segment,
A bonded composite fiber similar to the cross-sectional ml shape schematic diagram shown in FIG. 2(b) is made of polyamide elastomer fine fibers obtained by condensation reaction of the compound, hexamethylene diamine, and terephthalic acid, and 60 parts of polyethylene terephthalate. The fibers were spun by a melt spinning method using a spinneret, stretched 25 times in hot water, and heat-set to obtain a composite fiber with a single denier of 4 denier. This composite fiber was cut into a length of 1.211n, refined, and WL
It was treated as a pile for flocking.

Next, a polyester plain woven fabric as a base material was treated in the same manner as in Example 1, electro-flocked, heat treated, and then immersed for 2 minutes in a 70°C aqueous solution containing 0.3% sodium alkylbenzenesulfonate, and heated to 120°C. Dry in a hot air dryer. In the obtained flocked product, about two-thirds of the pile length was divided from the tip, the average length of the polyamide elastomer fine fibers was shrunk by about 24%, and most of the fine fibers were bent.

The obtained flocked product had elasticity with a bulge on the raised surface, had a good texture, and had an excellent hand-painted effect.

〔Effect of the invention〕

In the flocked product of the present invention, at least the tip is separated into elastic polymer fine fibers and non-elastic polymer fine fibers, and the elastic polymer fine fibers are inelastic polymer fine &I fibers.
The fibers are in a state where the length has been shrunk by at least 10%, and at least the glue-embedded part of the pile, which is flocked to the base material, is not divided, so that the fluff does not get entangled, and the fluff has an excellent hand-drawn effect. It also has a compressive elasticity on the surface and is a flocked product with a fluffy feel, high abrasion resistance, and no fuzz breakage or shedding.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the structure of the flocked product of the present invention showing the raised state, and FIG. 2 is a schematic diagram of the cross-sectional structure of the split-type conjugate fiber of the pile used in the flocking of the present invention.

Claims (7)

[Claims] (1) Composite fibers consisting of an elastic polymer fiber component and an inelastic polymer fiber component are flocked in the form of a pile, and at least the tip of the pile is separated into fine fibers of elastic polymer and fine fibers of inelastic polymer. The relationship between the pile length (L) of the polymer fine fibers and the pile length (l) of the inelastic polymer fine fibers satisfies L≦0.9l, and at least the adhesive-embedded portion of the pile is undivided. A flocked product featuring the following. (2) The composite fiber consisting of an elastic polymer fiber component and an inelastic polymer fiber component is a splittable composite fiber, and each fine fiber after splitting has a single fiber fineness of 0.7 denier or less and at least two fine fibers. The flocked product according to claim 1, which is a composite fiber forming fibers. (3) The first claim in which the elastic polymer fiber component is an elastic polymer selected from polyester elastomer, polyamide elastomer, and polyurethane elastomer.
The flocked product described in item 1 or 2. (4) Elastic polymer and inelastic polymer are dissolved in separate melting systems, each polymer component is spun into splittable composite fibers using a bonded spinneret to form at least two fine fibers, drawn, and then A pile with a length of 0.5 to 5.0 mm is made using composite fibers obtained by heat treatment according to the conditions, and the pile is flocked on the surface of the base material coated with adhesive. At least the tip part is split, and the pile length (L) of the fine fibers of the elastic polymer in the part obtained by splitting has a relationship with the pile length (l) of the fine fibers of the inelastic polymer: L≦
A method for producing a flocked product, which comprises dividing the product into pieces until a length satisfying 0.9 liters is obtained, and then drying the product. (5) The method for producing a flocked product according to claim 4, wherein the single fiber fineness of each fine fiber after splitting is 0.7 denier or less. (6) Claim 4, wherein the elastic polymer fiber component is an elastic polymer selected from polyester elastomer, polyamide elastomer, and polyurethane elastomer.
A method for producing a flocked product according to item 5 or item 5. (7) The splitting treatment of composite fibers has a surface tension of 40 dyne/c.
7. A method for producing a flock product according to any one of claims 4 to 6, which comprises treating with an aqueous liquid adjusted to a concentration of less than m.