JPS6136108B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a raised product, particularly a product with a high degree of color that varies depending on location, and a method for producing the same.

Products with raised hair, such as cut pile or loop pile, have a unique and diverse appearance and feel.
Widely used.

One purpose of producing these pile products is to obtain fur-like products. However, as is well known, natural fur has extremely complex, subtle, and sophisticated colors and shapes, and it has been almost impossible to artificially produce something similar. For example, most natural fur has extremely precise raised hairs with different colors at the base, center, and tip. Traditionally,
In order to dye the base of the pile of pile products, the dye is penetrated from behind the base fabric, and in order to dye the tip of the pile, a paste containing a dye, such as a printing paste, is applied to the tip using a roller, etc. Some methods have been proposed, such as applying something like this or dipping the tip in a dye solution. However, with these methods, it is extremely difficult to uniformly apply the dye to the pile, and it can be said that it is practically impossible to control it and dye the pile in a desired state with high precision.

For example, it is extremely difficult and almost impossible to achieve uniform and controlled dyeing by infiltrating the dyeing solution from behind the base fabric or by immersing only the tip of the pile in the dyeing solution. This is because in pile products, the piles are in contact with each other or bundled together, and capillary tubes are formed between the piles, and the staining solution diffuses irregularly to unintended locations due to capillary action, causing contamination. In order to avoid capillary action, if a sizing agent is used in the staining solution to increase its viscosity, it is extremely difficult to apply such a viscous material evenly and only to the desired location on the pile, which tends to fall.

Therefore, many fur-like products obtained by conventional methods do not have the complex and sophisticated colors of natural fur, and are no more than low-grade imitations.

The first object of the present invention is to provide a novel raised product having a high degree of color comparable to or even better than that of natural fur, and a method for producing the same.

A second object of the present invention is to provide a novel napped product having high fashionability and design, and a method for producing the same.

The present invention provides coloring and/or coloring of at least a portion of the piloerection.
Or, it is a napped product that has been bleached and has a color that changes three-dimensionally along the plane where the distance from the base fabric changes. The raised fluff that is fixed and rotated and stands up due to the centrifugal force, and the dyeing solution or decolorizing solution that is placed in a rotating container and forms a cylindrical interface due to the centrifugal force are combined with the base fabric of the fiber structure. It is characterized by making contact with the interface by changing the distance depending on the location.

In the present invention, raised pile refers to cut pile, loop pile, raised pile, and any other raised pile. Fibrous structures include knitted fabrics, woven fabrics, non-woven fabrics, and the like. FIGS. 1 to 9 are explanatory diagrams showing specific examples of the napped product of the present invention. Highly piled products and the fur of many animals consist of thick, long hairs 3 and thin, short fluff 2, but as shown in Figures 7 to 9, they consist of only one type of erect hair (stings or fluff). There are some things. In fur, the stinging hairs are often thin and pointed at the tips and thick at the center.
The root is thin, which is also desired in advanced pile products. 1 is a leather part in natural products, but in artificial products it is composed of knitted fabrics, woven fabrics, non-woven fabrics, and similar products thereof, and is called a base fabric. The base fabric 1 often contains, for example, polyurethane elastic material, rubber-based or non-elastic resin, but may not contain it.

The methods for producing napped products include the piling method in which piles are implanted during weaving using a so-called pile loom or pile knitting machine, the method using a so-called sliver knitting machine, the raising method, the tufting method, the electrostatic flocking method, and all other methods. Any method of manufacturing a product can be applied to the present invention.

A feature of the napped product of the present invention is that part or all of the napped hair has a color that changes three-dimensionally, and the color change occurs along the surface (flat or curved). In Figure 1, the stinging hair 3 is a surface.
The upper and lower parts of AA″ have different colors,
Because the plane AA′ is tilted with respect to the base fabric, the color of the prickles differs depending on the location. For example, if the bristle is white above surface AA′ and black below, the bristle on the right side of the diagram has more black parts, and the more on the left side of the figure, it has more white parts. If you extend this further to the left and right, you will have a mixture of white-only stinging hair and black-only stinging hair.

Figure 2 shows that the stinging hairs are above surface BB', and between surface BB'.
A different example is shown between the plane CC' and below the plane CC'. (The part above BB' and the part below CC' may be the same color.) In Figure 3, part 3a of the stinging hair is facing
An example is shown in which five parts divided by DD', EE', FF', and GG' have different colors from neighboring parts.

Figure 4 shows that the stinging hairs are light colored (e.g. white) above surfaces H and H' and dark colored (e.g. black) below surface II'.
This is an example of blur coloring in which the color gradually changes from a light color (e.g., light gray) to a medium-dark color (e.g., gray) to a dark color (e.g., black) between surface HH′ and surface II′. be. In the present invention, even when the color changes clearly (rapidly) above and below a surface as shown in FIG. 1, the color gradually changes (blurs) between surfaces as shown in FIG. ), it is also said that the color changes along the surface. Hereinafter, such a surface will be referred to as a color changing surface.

The distance between the color changing surface and the base fabric must vary depending on the location. That is, when the base fabric and the color changing surface are parallel, the color does not change depending on the location and a uniform appearance is provided, but a more advanced and varied design appearance cannot be obtained.

In order to vary the distance of the color changing surface from the base cloth depending on the location, it is necessary to make them three-dimensional surfaces, that is, inclined surfaces or curved surfaces. 1st
Figures 4 to 4 are examples of planes in which the color changing surface is inclined. 5 and 6 are examples in which the color changing surface is a curved surface. Although cylindrical and spherical surfaces can be used as the curved surface, a wave surface, that is, a curved surface having a plurality of concavities and convexities as shown in FIGS. 5 and 6, has the greatest variety and is most useful in terms of design.

As the wave surface, any wave surface such as a sine wave, a triangular wave, a trapezoidal wave, a wave surface similar to these, or an irregular wave surface may be used depending on the design needs. For example, Figures 5 and 6 show wavefronts similar to sine waves, Figure 7 is an example of a trapezoidal wave, Figure 8 is an example of a double trapezoidal wave, and Figure 9 is an example of a triangular wave and a trapezoidal wave. An example of a combined waveform is shown. However, a waveform that changes rapidly, such as a rectangular wave, has an unnatural appearance and lacks a sense of luxury, and is rather inappropriate for the purpose of the present invention. In order to provide a natural appearance resembling fur and soft colors, it is preferable that the waveform changes continuously. The waveform may be regular and geometric, but may also be irregular or complex (similar to natural products). Wavelengths of about 1 cm to 10 cm are often used, but larger wavelengths are also used depending on design needs. The inclined plane as shown in FIG. 1 can be said to be part of a wavefront with an extremely large wavelength.
A unidirectional wave surface that is corrugated in one direction and not corrugated in the orthogonal direction (such as corrugated slate used for roofing materials) is also useful, but in two orthogonal directions, waveform 2
Directional wavefronts (such as ripples) are often the most complex and have the highest design value. The wave height (width) can be selected depending on the design needs, usually from about 0.5 cm to the maximum length of the raised pile.

As mentioned above, the color change in the length direction of the raised piloes on the color change surface may occur abruptly and clearly, or gradually become blurred.
When this change occurs gradually (gradient-like) over a distance of 4 mm or more, a blurring effect is recognized and is called blur coloring, and when the change occurs within a distance of less than 4 mm, it is recognized as a clear and sudden color change. Both are useful for design. A change in color means changing to a different color, and a different color is one in which the hue, saturation, and brightness are distinguishable with the naked eye, such as hue B of 2.5 or more, saturation C2 or more in the Munsell symbol, or brightness. There is a difference of V1 or more.

In the napped product of the present invention, all of the napped hair changes color along the plane where the distance from the base fabric changes depending on the location, and some of the napped hairs are mixed with different colored ones. Contain things. For example, all of the stinging hairs change color along the color-changing surface, but fluff has a uniform color, and some of the stinging hairs (at least 10%, preferably 30% or more, most preferably 50% or more) ) It is also useful to have the color change along the color change surface and the other raised hairs to have different colors. For example, in FIG. 3, the color of the stinging hairs 3a changes along the color change planes DD', EE', and FF', but the color of the stinging hairs 3b does not change depending on the location. In this way, by combining two or more types of raised hairs with different dyeing states and changing the two-dimensional and three-dimensional color distribution of at least one type of raised hairs, products with appearance and color that change three-dimensionally, such as fox It is possible to obtain products that have a highly varied appearance and sophisticated design similar to the fur of many natural animals such as , raccoon dog, and marten.

In addition, by giving a color that changes three-dimensionally and then layering another color that changes three-dimensionally on top of that, you can create an appearance that resembles the most luxurious natural fur, or a color that changes three-dimensionally. It is possible to obtain a product with a high degree of design effect not found in other products.

The napping can be made of polyamide, polyester, polyvinyl, acrylic, polyolefin, regenerated fiber, or any other man-made fibers, as well as natural fibers such as cotton, wool, and silk that can be dyed or bleached. Among these, flame-retardant fibers containing flame-retardant components are preferred from the standpoint of safety. It is most preferable that the piloeresses have a double structure of prickly hair/fluff, but the invention is not limited to this;
Those having three or more types of piloerection are also included in the present invention.

As fluff, it is generally less than 10d, especially less than 5d,
In most cases, the diameter is about 0.5 to 3 d (of course, those less than 0.5 d can also be manufactured and are useful).They are often crimped, and the density is often 1000 to 100,000 strands/cm ² . On the other hand, stinging hairs are often uncurled or weakly curled, with a thickness of 5 d or more, especially 10 d.
In most cases, the density is about 15 to 100 d and the density is 50 to 100 d.
It is often 5000 lines/cm ² , especially 100 to 1000 lines/cm ² .

It is most desirable for the stinging hair to be tapered at the tip and base, but it is also possible to use hair that is only tapered at the tip or one that is uniform in thickness. The length of the raised fluff is from about 0.5 cm to about 10 cm, but usually about 1 cm to 6 cm is most often used, and the length may be uniform or different.

As for the nape, crimped ones can be used as described above, but non-crimped ones can also be used. The cross section of the piloerection may be circular or non-circular. The piloerection may or may not contain a dissipating agent (such as titanium oxide particles). Similarly, the nape may be surface-treated to impart gloss, water repellency, antifouling properties, hydrophilicity, antistatic properties, flame retardance, melt resistance, and the like.

The napped product of the present invention can be produced relatively easily. The manufacturing method will be explained below.

FIG. 10 is an explanatory diagram showing the basic method of processing a napped product in a state where the napped hair is raised by centrifugal force. In the figure, a base cloth 1 having raised naps 3 is fixed to a rotating holder 4, and the raised naps 3 stand up outwardly due to the centrifugal force caused by the rotation. A fiber processing liquid 7 is held in the outer rotating container 5, and a cylindrical interface 8 is formed by centrifugal force.
comes into contact with the processing fluid 7 and is processed (dyed, bleached, dissolved, decomposed, etc.). 6 is a rotating shaft, 10 is a machining fluid supply section, 11 is a control valve, 12 is a machining fluid discharge section, and 13 is a control valve.
By adjusting the amount of the processing liquid 7, the position of the liquid level 8 can be controlled, and desired processing can be carried out by processing any part of the nap for any time and at any temperature. The method of processing a napped product by raising the fluff by centrifugal force and contacting it with a processing liquid in which an interface has been formed by centrifugal force is hereinafter referred to as a centrifugal processing method. 10th
In the method shown in the figure, the base fabric is held along a cylinder concentric with the rotation axis, so the nap is treated uniformly (uniformly) and the treatment condition does not change depending on the location. Such a method is used for the purpose of uniformly processing the napped hair, for example, uniformly thinning (sharpening) or cutting the tip of the napped hair, or uniformly shading the napped hair up and down and dyeing it.

FIG. 11 shows a specific example of the method for producing the raised product of the present invention, and is a partial diagram of a slightly more complicated method than the method shown in FIG. In Figure 11,
A base fabric 1 having raised naps 3 is fixed to a rotating inner cylinder 4, but spacers 14 are used so that the distance between the base fabric and the liquid level 8a or 8b varies depending on the location. Two types of machining liquid are used, one for the inner side 7a and the other for the outer side 7b, but of course only one type can be used as shown in FIG. If, for example, a dyeing liquid is used as the inner processing liquid 7a and the outer processing liquid 7b is an inert liquid, only the raised portion (for example, the middle part) can be dyed. In this case, it is necessary that the processing liquid 7b does not mix with the inner liquid 7a, has a higher density than the inner liquid 7a, and has a lower density than the nap.

In Fig. 11, a wave-shaped spacer 14 is used to change the distance between the base fabric and the processing liquid depending on the location, but by using various shapes as this spacer, it is possible to create the desired color changing surface. It is possible to obtain a raised product. By making the shape of the base fabric a cylinder eccentric to the liquid level 8a or 8b, or a truncated cone coaxial with the rotation axis, a flat product with an inclined color changing surface can be obtained. Of course, in addition to this, the desired color change can be achieved by holding the base fabric so that the distance of the base fabric to the wave surface of the processing fluid increases or decreases with a constant slope, changes with a constant curvature, or changes in a wavy manner. You can make a surface. 1
5 is a screw that fixes the base fabric to the rotating inner cylinder,
You can also use studs, wire, etc. instead. Furthermore, if the fixing points are appropriately arranged, unevenness can be created on the surface of the base fabric by utilizing the fact that the base fabric is pulled outward and floated by centrifugal force without using a spacer.

In order for the pile 3 to stand up even in the machining fluid 7, the specific gravity of the pile needs to be greater than the specific gravity of the machining fluid. Most fibers have a specific gravity of 1 or more, which is higher than that of an aqueous processing fluid, so there is no problem.

If the treatment liquid is a dyeing liquid, the tip of the pile 3 will be dyed as shown in FIG. By controlling the position of the interface 3 by adjusting the amount of dyeing solution, etc., it is possible to dye any position of the nape. For example, if the position of the interface is gradually moved from one position to another, it is possible to dye the pile 3 in a darker color (gradient dyeing) as it approaches the tip. Similarly, by treating a pre-dyed pile with a decolorizing solution, it is possible to decolorize the tip, or to strongly decolorize the pile toward the tip. Furthermore, a triple-colored pile can be obtained by decolorizing the center and tip of a pre-dyed pile and then dyeing the tip. In addition to the above, it is also possible to use one or more types of processing liquids and freely combine dyeing, decolorization, and liquid level control to change the coloring state of a single pile in complex and subtle ways along its length. That should be obvious. Furthermore, by three-dimensionally changing the surface of the base fabric, three-dimensionally varied colors can be obtained.

The interface (liquid level) can be easily controlled by adjusting the amount of processing liquid by operating a pump or valve. The liquid level can also be monitored and automatically controlled using a suitable liquid level gauge. Processing (treatment) temperature can also be controlled arbitrarily,
Processing can be carried out under normal pressure, increased pressure or reduced pressure as required.

The method shown in FIGS. 10 and 11 can be used not only for dyeing and bleaching, but also for thinning the tips, roots, and other arbitrary parts of the nape, and for cutting the nape.

Changing the thickness of the raised fluff or cutting it can be carried out by using a solvent or a decomposer solution as the treatment liquid. It is desirable that the solvent be one that gradually dissolves the fibers from the surface without causing them to swell too much. As a decomposing agent, for example, an aqueous solution of a strong alkali such as caustic soda is well known for polyester fibers, and in this case, the fibers are gradually decomposed and removed from the surface as if being polished, without causing almost any swelling. This is particularly suitable. For example, in Figure 10, the pile 3 is made of polyester fiber (polyethylene terephthalate, polyethylene oxybenzoate, etc.), and the treatment liquid is 60%
Using a caustic soda aqueous solution (1-30°C, preferably 1-10%) heated to ~130°C, preferably 60-100°C, the pile is removed from the center by gradually changing the interface of the treatment liquid outward. It can be gradually tapered towards the tip. Similarly, if the interface is fixed for a sufficient period of time, the pile will be cut. In addition, by using an alkaline aqueous solution as the first processing liquid and using an inert liquid with a slightly lower density as the second processing liquid, the first processing liquid can be brought into contact with any arbitrary position of the pile, such as the root or middle part. You can make that part thinner. Furthermore, by using the method shown in FIG. 10, but by keeping the base fabric in a wavy shape, the length of the pile can be cut into a wavy shape or made into a peak. Similarly, the piloerection can be partially swollen or latent curled using the method shown in FIGS. 10 and 11. The piloerection applies equally whether it is crimped or not. Furthermore, the nap can be heat treated using a liquid or various gases.

The centrifugal force applied to the present invention needs to be sufficient to erect the pile and form a cylindrical liquid surface (interface) in the processing liquid, and is usually at least three times the gravitational acceleration G (3G) or more. 5 times (5G)
Although the above is above, it is desirable to further increase the speed by 10 times (10G) or more, especially 30 times (30G) or more. The higher the acceleration due to centrifugal force (particularly 100 G or more), the better the erectability of the pile will be, which is preferable; however, in practice, it is often limited to several thousand G or less in terms of mechanical strength. For example, in the case of a radius of 1 m and one revolution per second, the centrifugal force is approximately
Although it is 3.6G, the ability of the pile to stand up and the ability to form a cylinder on the surface of the processing liquid is somewhat weak. At 10 rotations per second, the centrifugal acceleration is approximately 360G, which is sufficient. If pile fibers are crimped, the crimping may stretch if the acceleration is too large, so it is necessary to choose an appropriate acceleration.

The direction of the rotation axis 6 may be horizontal, vertical, or at any other angle. In addition, in order to control the level of the processing liquid, a liquid inlet, discharge hole, pump, valve, liquid level gauge, etc. can be appropriately installed. Of course, it is also possible to include a heating or cooling device and a temperature detection device for controlling the temperature of the processing liquid.

The rotational angular velocity of the holding portion of the pile product and the processing liquid may be the same, or there may be a slight difference. If they are the same, it is advantageous because the rotating shaft and drive system can be shared. On the other hand, when there is a difference in rotational angular velocity, the processing liquid is stirred and more uniform processing can be performed. Too large a speed difference (for example, 1 rotation/1 second or more) is not preferable because the pile will not stand up properly. On the other hand, in order to maintain the uniformity of the processing liquid, a pump may be provided in the processing liquid system to circulate the liquid.

All kinds of fibers such as natural fibers, chemical fibers, and synthetic fibers can be used as the fibers constituting the pile. The fibers constituting the pile may be one type or a mixture of two or more types. For example, the thickness
Pile products made of two or more types of fibers with different cross-sectional shapes, dyeability, decolorization, degradability, solubility, shrinkability, crimpability, latent crimpability, self-splitting properties, etc., such as jacquard knitted fabrics. By applying the invention, it is possible to produce products with more complex colors, appearances, and textures.

In the present invention, a complex and sophisticated design effect can be obtained by holding the base fabric in a wavy shape. Figure 12~
FIG. 14 shows a specific example of a base fabric shaped into a waveform.
FIG. 12 shows an example in which the base fabric 1 has a unidirectional waveform that does not change in the X direction but changes in a wavy manner in the Y direction (circumferential direction of the cylinder 4). This is an example in which the base fabric 1 has a unidirectional waveform that changes in a wavy manner in the X direction and does not change in the Y direction. It is relatively easy to maintain the shape of the base fabric as shown in FIGS. 12 and 13.

FIG. 14 shows an example in which the base fabric 1 has irregular waves (irregularities) in two directions, X and Y. Using methods similar to those shown in FIGS. 12 to 14, an arbitrary waveform can be selected depending on the design purpose, and thereby a product having a desired three-dimensional color change can be obtained.

FIGS. 15 to 20 are plan views showing specific examples of the appearance of napped products having changed colors obtained by the method of FIGS. 11 to 14 or a method similar thereto. In the figure, part 16 and part 17
show different colors. Of course, the color of portions 16 and 17 gradually changes, and the boundary between them is intermediate. For example, in FIG. 7, between the light-colored (white) napped group 16 and the dark-colored (black) napped group 17, there is a medium-colored napped group 18 dyed in two colors, dark and light. It is a feature of the product and manufacturing method of the present invention that the color changes three-dimensionally and continuously in this way. In FIGS. 15 to 20, the region of the medium-colored piloerection group is omitted.

In the products shown in Figures 1 to 6, the color changes are extremely continuous and it is difficult to clearly differentiate the areas, but macroscopically, there are two areas where one color is strong and another area where another color is strong. Dimensionally (for example, Figures 15 to 2)
(as shown in Figure 0).

Such continuous color changes provide a unique and sophisticated design effect that is similar to, or not found in, natural fur. On the other hand, for example, the colors of jacquard knitted and woven napped products and printed products obtained using threads of different colors change intermittently, making them crude and lacking in luxury. However, excellent products can be obtained by using the jacquard method or the printing method in combination with the method of the present invention, and such products are also included in the products of the present invention.

The base fabric used for manufacturing the product of the present invention is selected from woven fabrics, knitted fabrics, nonwoven fabrics, other fabrics, sheet-like materials, etc., as necessary. However, in order to form a bidirectional wave front as shown in FIG. 14 during centrifugal processing, a highly elastic base fabric is preferable.
For example, an elongation rate of 10% or more, especially 20% or more is preferable in order to form a wave surface with large irregularities.
Examples of highly stretchable tissues include knitted fabrics and loose knitted fabrics containing elastic threads (rubber, spandex, etc.). After being subjected to centrifugal processing in an uneven shape, the final product must return to a flat or nearly flat shape, and the fabric must have a high elastic recovery rate of elongation, such as recovery of 50% or more, especially 75% or more. Preferably. In addition, the base fabric that has been deformed into irregularities by centrifugal processing is subjected to tension or relaxation heat treatment, boiling water treatment,
Restoration to a flat surface can be facilitated by massaging and loosening. Similarly, after centrifugal processing, the base fabric can be impregnated with an elastic resin (polyurethane resin, etc.), the back side can be raised, or the surface can be subjected to a raised surface treatment (applying an oil resin).

In the method of the present invention, the interface of the treatment liquid can be controlled with high precision as required, and different treatments can be precisely performed depending on the pile portion. In contrast, the conventional method, for example, as shown in Figure 1 of Japanese Patent Publication No. 48-4910, involves filling a container with a treatment solution, letting the pile hang down from above (by gravity), and immersing the tip of the container for treatment. This method has a serious drawback in that the treatment liquid is drawn up between the piles by capillary action, resulting in irregular treatment and contamination of areas that should not be treated. In the method of the present invention, sufficient centrifugal force, e.g.
By using 10G or more, especially 30G or more,
It can be prevented. Furthermore, in general, piles are often crimped or loosely curled due to previous manufacturing processes, and it is difficult to make the pile stand up evenly; however, the present invention uses centrifugal force to If a force many times the force of gravity is required, the pile can be erected with a force tens or hundreds of times stronger.
Processing accuracy and uniformity are dramatically improved.

The pile product of the present invention has an extremely sophisticated and complex appearance, and can provide aesthetics equal to or better than that of natural fur. The color of natural fur cannot be freely controlled, but as mentioned above, the product of the present invention can have color control as desired, so it can have a design that is better than that of natural leather. I can do it.

The present invention will be specifically explained below using Examples.

Example 1 _P1 is a polymer obtained by copolymerizing 92% (by weight) of acrylonitrile, 7% of methyl acrylate, and 1% of sodium allylsulfonate. Acrylic nitrile
_P2 is a copolymer of 89% methyl acrylate, 10% methyl acrylate, and 1% sodium allylsulfonate. Polymers P ₁ and P ₂ were each dissolved in dimethylformamide (DMF), and wet composite spinning (side-by-side composite, composite ratio 1/1) was performed using a water/DMF mixture as a coagulating liquid. The spun yarn is stretched 8 times in water at 100°C, then shrunk by 15% in water at 100°C, and then dried in air at 120°C to form an acrylic composite filament (120d) with latent crimpability. /
100f) got _F1 .

Filament F ₁ is used for the pile yarn, 6 nylon filament (150d/40f) F ₂ is used for the ground yarn,
A cut pile knitted fabric CP ₁ was obtained. The pile length of CP ₁ is
22mm, the pile single yarn density is approximately 10,000 threads/ ^cm2 , and the elongation rate is approximately 50% in the warp direction and approximately 100% in the weft direction.
It is.

Polyester _P3 is a polyester obtained by copolymerizing 95% by weight of an ethylene terephthalate component and 5% by weight of polyethylene glycol having a molecular weight of 600. Polymer P ₃ (containing 0.6% titanium oxide) is melt-spun,
It was stretched 3.5 times at 100°C and then heat treated at 145°C to obtain a filament _F3 of 180d/4f.

Pile knitted fabric CP ₁ was grafted with filament F ₃ at a single yarn density of about 400 filaments/cm ² by the tufting method to form a cut pile with a pile length of 45 mm to obtain pile knitted fabric CP ₂ . CP ₂ is a double-structured pile product in which the pile made of filament F ₁ corresponds to fluff, and the pile made of filament F ₃ corresponds to fluff.
The stinging hairs are coarse and hard and have poor appearance and feel. So, CP ₂
The roots and tips of the stinging hairs were thinned using the method shown in Figure 10. The pile knitted fabric CP ₂ is attached to an inner tube 4 having a diameter of 1 m, and is rotated together with an outer tube having a diameter of 1.2 m at a speed of 600 revolutions/min to cause the pile to stand up due to centrifugal force.

Next, a mixture of carbon tetrachloride and liquid paraffin with a specific gravity of 1.2 was filled to a position 15 mm from the base fabric, followed by 5% caustic soda and 0.5% alkaline hydrolysis accelerator (Hipposha Yushi Kogyo DYK-1125). The aqueous solution was filled up to a position 2 mm from the base fabric.

At the above location, the hair was treated with an alkaline aqueous solution at a temperature of 70° C. for 90 minutes to partially dissolve the roots of the stinging hairs and reduce their thickness to approximately 1/2 (weight). Next, remove the carbon tetrachloride mixture, fill the alkaline aqueous solution so that the liquid level is 45 mm from the base fabric, and gradually add more to raise the liquid level to a position 35 mm from the base fabric. It took 90 minutes to reach this point, and then the alkali solution was gradually removed, and the temperature was lowered to a position 45 mm from the base fabric in 90 minutes. Thereafter, all the alkaline solution was removed and the fabric was thoroughly washed with water to obtain a pile knitted fabric CP ₃ in which the root and tip portions of prickly hair (consisting of filament F ₃ ) were narrowed.

Next, the pile knitted fabric CP ₃ was dyed.

First, add CP ₃ to a gray basic dye (Pile Japan).
The acrylic composite pile was dyed light gray (0.1% UWF dye adsorbent) by dyeing with an aqueous solution of Astrazun Gray BL) at 100°C for 30 minutes.

Next, the polyester pile was dyed by the method shown in FIG. A one-dimensional wavy plate is used as the spacer 14, a base fabric is attached as shown in Fig. 12, and a black disperse dye (Nippon Kayaku
Kayalon pullester Black T) aqueous solution (liquid depth 12 mm) was used, and the outer liquid 7b was a tetrachlorethylene/liquid paraffin mixture (density
1.2) was used. First, adjust the outer interface 8b to a point 40 mm from the valley (recess) of the base fabric, then gradually add the outer liquid 7b to raise the interface 8b, and raise it 20 mm from the valley of the base fabric in 20 minutes. The sample was dyed at that position for an additional 30 minutes, and then all of the solution was removed, washed with water, and dehydrated. The resulting piloerection product
The cross section of CP ₄ was dyed in a blur as shown in Figure 6, and the color distribution was blurred in plan as shown in Figure 15, giving it an extremely elegant and high-class appearance. Note that when the base fabric is held in a wavy shape and processed, the napped hair is heat-set in that state, and when the base fabric is returned to a flat surface, the napped hair may rise and fall in a wavy shape.
If this undulation is severe, it may impair the appearance, but if it is moderately gentle, it changes the surface of the nap, so it is preferable. A method as shown in FIG. 11 can also be applied for such heat setting. In addition, the method shown in Fig. 10 is applied to heat set all the raised hairs to make them stand upright. The heating medium for such heat treatment includes water and other liquids,
Gases such as water vapor and air are used.

Napped product CP ₄ has a base fabric impregnated with polyurethane from the back side (polyurethane adhesion amount 17%), and the napped fabric has a silicone-based water-repellent and stain-resistant treatment (Sumitomo 3M's Scotch Guard FC-453 is used, adhesion amount 1% UWF).
The final finished product CP ₅ was obtained.

Example 2 The pile knitted fabric CP ₃ of Example 1 was dyed by the method shown in FIG. That is, as a spacer 14, 2
The base fabric was fixed using a wavy plate with irregular dimensions as shown in FIG. As the dyeing solution 7a, the disperse dye solution of Example 1 with a depth of 40 mm was used, and as the outer solution 7b, the same one as in Example 1 was used, and the outer interface 8b
was fixed at a point 40 mm from the concave part (trough) of the base fabric and heated at 98℃.
After dyeing for 60 minutes, it was dehydrated, washed with water, and dried, and then the base fabric was impregnated with polyurethane resin in the same manner as in Example 1.
The nape was treated with antifouling water to obtain the final finished product CP ₆ . The cross-sectional color distribution of CP ₆ was as shown in Figure 9, and the planar color distribution was as shown in Figure 19, showing an extremely high degree of fashionability and elegance.

In Examples 1 and 2, examples were shown in which white, gray, and black were used as colors, but colors other than those mentioned above, such as brown, brown, and yellow, which are often found in animal fur, can be used, and the same It can be bleached. In addition, red, blue, green, yellow, orange, yellow-green, purple,
You can also choose fashionable colors such as navy blue or pink. Furthermore, after dyeing with a certain color in a wavy pattern, for example, it is dyed in a wavy pattern with another color to overlap, blur, or combine the colors to obtain a more complex appearance. Such multicolor combinations include white/gray/brown/
Black, white/gray/blue-purple/black, black/purple/blue/brown,
Red/white/blue/purple, yellow/black/white/orange, yellow/green/white/
You can arbitrarily choose from countless combinations such as blue, depending on your design purpose. It has been impossible with conventional methods to precisely color the napped hair in such a large number of colors arbitrarily and in a desired form.

In addition, in Examples 1 and 2, acrylic fibers were used as the fluff, but the fluff was made of polyamide,
Fibers such as polyester are also suitable. Similarly, in addition to polyester fibers, polyamide fibers, acrylic fibers, and the like are also suitable for the pricking bristles. However, polyester fibers are advantageous because they can be easily made thinner at the tips by alkali treatment. In particular, modified (copolymerized or mixed) polyesters such as those shown in Examples are suitable because they are sensitive to alkali and can be dyed at 100° C. or lower (under normal pressure), making them easy to process.

If it is necessary to use flame-retardant fibers from the standpoint of safety, flame-retardant fibers such as acrylic, polyamide, polyester, and cellulose fibers may be used. Generally, fibers containing halogen, phosphorus, sulfur, nitrogen, antimony, germanium, etc. as flame retardant components are widely known and suitable for the present invention. For example, flame-retardant acrylic fibers include those copolymerized with vinyl chloride or vinylidene chloride, flame-retardant polyamides include melamine compounds or bromine compounds, and flame-retardant polyester fibers include bromine compounds, phosphorus compounds, or/and Flame-retardant cellulose fibers such as those copolymerized or mixed with sulfur compounds and those mixed with phosphorus compounds and/or halogen compounds are well known.

[Brief explanation of the drawing]

FIGS. 1 to 9 are explanatory diagrams showing specific examples of the napped product of the present invention. FIG. 10 and FIG. 11 are explanatory diagrams of the method for manufacturing the napped product of the present invention. FIGS. 12 to 14 are explanatory diagrams showing specific examples of the method for fixing the base fabric during the production of the napped product of the present invention. 1st
5 to 20 are plan views showing specific examples of the planar color distribution of the napped product of the present invention.

Claims (1)

[Scope of Claims] 1. A napped product having a color that changes three-dimensionally by coloring and/or bleaching at least a portion of the napped material and changing the color along a plane where the distance from the base fabric changes. 2. The product according to claim 1, wherein the surface whose distance changes with respect to the base fabric is an inclined plane. 3. The product according to claim 1, wherein the surface whose distance changes with respect to the base fabric is a curved surface. 4. The product according to claim 3, wherein the curved surface is a unidirectional or bidirectional wavefront. 5. The product according to claim 1, in which the color of the raised hair changes rapidly or gradually along the length. 6. The product according to claim 1, which has a plurality of surfaces whose distances vary with respect to the base fabric. 7. A fiber structure having raised naps is fixed to a holder and rotated, and the raised naps stand up due to the centrifugal force.
A dyeing or decolorizing solution contained in a rotating container and forming a cylindrical interface by centrifugal force is brought into contact with the base fabric of the fibrous structure by changing the distance between the interface and the base fabric depending on the location. A method for manufacturing a nap product having a color that changes dimensionally. 8. The method according to claim 7, wherein the interface of the dyeing or decolorizing solution and the base fabric holder are arranged eccentrically. 9. The method according to claim 7, wherein the base fabric is held in a truncated conical shape and brought into contact with a dyeing solution or a decolorizing solution. 10. The method according to claim 7, wherein the base fabric is brought into contact with a dyeing solution or a decolorizing solution while maintaining a unidirectional or bidirectional waveform.