JP4500266B2 - Method for producing napped fabric - Google Patents

Description

  The present invention relates to a napped fabric composed of a ground tissue portion and a napped portion and a method for producing the napped fabric. More specifically, the present invention relates to a napped fabric having a gentle slope on the surface of the napped portion and rich in luxury, and a method for producing the napped fabric.

  Conventionally, standing fabric has been used mainly in fields such as vehicle interior materials, interior materials, and clothing. In recent years, among these napped fabrics, those having a three-dimensional pattern on the fabric surface have attracted attention as napped fabrics rich in luxury. As a method of forming such a three-dimensional pattern, a method of physically forming unevenness and a method of chemically forming unevenness are known.

  As a method for physically forming unevenness, there is known a method of forming an engraving roll by contact pressure under high-temperature heating (for example, embossing, shriner processing, etc.). Therefore, there is a problem that the texture is hardened and the fabric is flattened, and that the metallic luster is generated by the heat roll, resulting in thermal discoloration.

  On the other hand, as a method of chemically forming unevenness, a method of forming an unevenness difference (stepped step) by printing an alkaline agent mainly composed of caustic soda and dissolving the printed portion (for example, patent document) 1) or a method of forming a deep and sharp concavo-convex pattern by shrinking napped yarns by spraying the fiber shrinking agent onto a napped fabric using an inorganic or organic solvent as a fiber shrinking agent (for example, see Patent Document 2). Proposed. However, these raised fabrics having a stepped unevenness difference and a deep and sharp unevenness pattern are not satisfactory in terms of luxury. Further, in the method of spraying the fiber shrinkage agent on the raised fabric, there is a problem that the fiber shrinkage agent is usually highly viscous, so that the nozzle portion is clogged and a special spraying device controlled by a computer is required.

JP-B-2-35075 JP-A-10-298863

  An object of the present invention is to provide a napped fabric rich in luxury and a method for producing the same. The above object can be achieved by the raised fabric of the present invention and the production method thereof.

The present invention partially removes a raised portion of a raised fabric composed of a ground tissue portion having a woven structure made of organic fiber yarns and a raised portion made of polyester fiber by a chemical etching method. By gradually decreasing the height of the portion, a method for producing a napped fabric that forms a gradient portion having an inclination angle of 0.5 to 10 degrees, when the napped portion is partially removed by a chemical etching method, A method for producing a napped fabric comprising using a rotary screen having a portion where the hole diameter of an etching treatment liquid discharge hole gradually increases.

  In that case, it is preferable to perform a chemical etching process by superimposing continuously using 2 to 5 rotary screens.

In the raised fabric of this invention, it is explanatory drawing which shows typically a mode that the gradient part 1 is formed in the raised part. In the standing fabric of this invention, it is explanatory drawing which shows another aspect typically. It is explanatory drawing which shows typically a mode that the level | step difference without a gradient is formed in the napping part in the conventional napping fabric. In the raised fabric which concerns on this invention, it is explanatory drawing for demonstrating the raised portion height L of a raised portion. In the napped fabric according to the present invention, it is an example of a pattern that can be formed by a plurality of gradient portions.

  The napped fabric of the present invention comprises (A) a ground tissue portion having a knitted fabric composed of organic fiber yarns, and (B) a napped portion composed of polyester fiber, wherein the napped portion is composed of the ground tissue. It consists of a plurality of napped yarns (cut piles) knitted or woven into a portion and extending from the ground tissue portion to at least one side thereof.

  The raised portion is constituted by a raised yarn made of polyester fiber. One type of napped yarn constituting the napped portion may be used, or two or more types may be used. Further, two or more types of napped yarns may be used, and the napped yarn height, brightness, hue, and the like may be different from each other. Such a raised yarn may be a normal crimped yarn provided with a normal crimp or may be a non-crimped yarn. Furthermore, you may comprise a napped part with a crimped-up wool yarn and a non-crimped-up wool yarn. It is preferable that crimped raised yarn is included in the raised portion because the lodging resistance of the raised yarn is improved. Examples of methods for imparting crimps include false twist crimping, air jet machining, and compression crimping.

  The polyester resin forming the raised yarn is produced from a dicarboxylic acid component and a diglycol component. As the dicarboxylic acid component, terephthalic acid is preferably used mainly, and as the diglycol component, it is preferable to use one or more alkylene glycols selected from ethylene glycol, trimethylene glycol and tetramethylene glycol. Moreover, the polyester resin may contain a third component in addition to the dicarboxylic acid component and the glycol component. Examples of the third component include cationic dye dyeable anion components such as sodium sulfoisophthalic acid; dicarboxylic acids other than terephthalic acid such as isophthalic acid, naphthalenedicarboxylic acid, adipic acid, sebacic acid; and glycol compounds other than alkylene glycol. For example, one or more of diethylene glycol, polyethylene glycol, bisphenol A, and bisphenol sulfone can be used.

  In such a polyester resin, a matting agent (titanium dioxide), a micropore forming agent (organic sulfonic acid metal salt), a coloring inhibitor, a heat stabilizer, a flame retardant (antimony trioxide), fluorescent light, if necessary. You may contain 1 or more types of a whitening agent, a coloring pigment, an antistatic agent (sulfonic acid metal salt), a hygroscopic agent (polyoxyalkylene glycol), an antibacterial agent, and other inorganic particles.

  There is no limitation on the single fiber fineness (count) of the polyester fiber, or the total fineness (count) of the yarn for forming the raised portion composed of one or more of these, but the single fiber fineness is 0.5 to 5 dtex, and the raised portion The total fineness of the forming yarn is preferably 30 to 300 dtex. When the single fiber fineness is less than 0.1 dtex, the resulting lodging resistance may be insufficient, and the texture of the obtained raised portion may become excessively soft, and when it exceeds 10 dtex The texture of the napped portion obtained may become excessively scary. Furthermore, when the total fineness of the yarn for forming the raised portion is less than 30 dtex, or conversely, more than 300 dtex, the handleability at the time of yarn processing such as crimping and blending with other yarns or weaving is reduced. May cause inconvenience. The cross-sectional shape of the single fiber is not limited, and may have a triangular, flat, constricted flat, cross, hexagonal, or hollow cross-sectional shape in addition to a normal circular cross section. Further, the yarn for forming the napped portion may be a composite yarn composed of two or more kinds of constituent yarns. In this case, different colors may be obtained by making the polyester resins of the constituent yarns different from each other or kneading a colorant. Or it is good also as different dyeing property.

  In the raised fabric of the present invention, as schematically shown in FIG. 1, a gradient portion 1 is formed by gradually decreasing the height L of the raised portion in one or more partial regions of the raised portion. Such a gradient portion can be obtained by removing the tip portion of the polyester-based raised yarn constituting the raised portion by a chemical etching method as described later. When the raised portion is formed with a gradient portion, the portion where the height of the raised portion is high appears light, while the portion where the height of the raised portion is low is shaded and appears dark, and the color is light along the gradient. Since the shade gradually changes from dark to dark, a high-class feeling can be obtained.

Here, it is important that the inclination angle A of the gradient portion is within a range of 0.5 to 10 degrees (preferably 1 to 3 degrees). If the inclination angle A is an acute angle larger than 10 degrees, the brightness changes abruptly from a light color to a dark color, so that a satisfactory high-class feeling may not be obtained. On the contrary, if the inclination angle is smaller than 0.5 degrees, the brightness does not change sufficiently, and there is a possibility that a satisfactory high-class feeling cannot be obtained. Further, as schematically shown in FIG. 3, it is also not preferable that unevenness having a step with no gradient is formed on the raised portion because a high-class feeling cannot be obtained.
At that time, as schematically shown in FIG. 2, the raised portion includes two or more kinds of raised yarns that are different from each other in lightness or hue, or brightness and hue, and the color gradually changes along the gradient. In particular, an excellent luxury feeling is obtained and preferable.

  Moreover, in the said gradient part, it is preferable when obtaining the satisfactory high-quality feeling that the depth difference H of the maximum raised part height of the gradient part and the minimum raised part height is the range of 0.6-1.0 mm. Further, the maximum raised portion height L of the raised portions is preferably 1 to 5 mm (more preferably 1.5 to 3 mm) in order to obtain a satisfactory high-quality feeling. In addition, when the napped yarn is inclined with respect to the ground tissue portion (less than 90 degrees), the napped portion height L is measured as a vertical distance as shown in FIG.

In the gradient portion, it is preferable that the surface of the gradient portion (inclined surface) has few fine irregularities. If the surface of the gradient part is smooth with few fine irregularities, the brightness gradually changes from a light color (maximum pile height side) to a dark color (minimum pile height side) along the gradient. It is done. As a measure of the small number of such fine irregularities, the number of fine concave portions having an area of 0.05 mm ² or more is 120 pieces / cm ² or less (more preferably 10 to 100 pieces / cm ² ). In particular, the total area of the recesses is more preferably 20% or less (more preferably 2 to 10%) with respect to the total area of the 40% region. Thus, a smooth gradient with few fine recesses can be obtained by overlapping and etching with a plurality of rotary screens as described later. Note that the 40% region on the maximum height side of the gradient portion is the gradient portion surface area of the region corresponding to 0.4 W in FIG.

  In addition, it is preferable that a gradient portion is formed in a plurality of partial regions of the raised portion, and that a pattern is formed by the plurality of gradient portions, since a sense of quality is further increased. Examples of such a pattern include a pattern in which a square as illustrated in FIG. 5 (a length of about 1 to 3 cm is appropriate for one side), a polka dot pattern, a lattice pattern, a checkered pattern, and the like. Is done. In FIG. 5, the light colored portion is where the raised portion is high, while the dark portion is where the raised portion is low.

  There is no restriction | limiting in the knitted fabric structure of the raised fabric of this invention, For example, it is a cut pile fabric obtained by cutting loop piles, such as a warp pile fabric, a weft pile fabric, a sinker pile fabric, a Russell pile fabric, a tricot pile fabric.

  In the raised fabric of the present invention, there is no particular limitation on the type of yarn, the type of fiber, the single yarn fineness, and the total fineness used in the ground tissue portion, and organic fiber yarns used in ordinary raised fabrics can be used. it can. Such organic fiber yarn includes cotton, wool, hemp, viscose rayon fiber, polyester fiber, nylon fiber, polyolefin fiber, cellulose acetate fiber and the like. In general, the yarn for the ground tissue part of the raised fabric of the present invention is preferably selected from polyester multifilament yarns, whereby a ground texture part having a preferred texture and dyeability can be obtained.

The distribution of the raised yarn in the raised portion of the raised fabric of the present invention is preferably in the range of 34,000 to 220,000 dtex / cm ² . When the napped yarn density is less than 34000 dtex / cm ² , the napped yarn in the napped portion easily falls down during the etching process, and the etching action may become unstable. On the other hand, if it exceeds 220,000 dtex / cm ² , the penetrability of the alkaline treatment liquid into the napped portion may be deteriorated during the etching process, and a satisfactory etching process may not be performed.

  The raised fabric of the present invention can be produced, for example, by the following method.

  First, after weaving and weaving a pile fabric composed of a ground tissue portion made of the organic fiber yarn and having a knitted fabric structure and a loop pile portion made of the polyester fiber, the loop pile of the fabric is Cut by the method to make a raised fabric.

  At that time, the napped yarn constituting the napped portion may be one type, but two or more types of napped yarns having different napped yarn heights are included, and these napped yarns have lightness or hue, lightness and The hues are preferably different from each other. In this way, if the napped portion contains many types of napped yarns that are different in color from the napped height, when the gradient portion is formed, the color gradually changes along the gradient of the gradient portion. A feeling is obtained. For example, when a raised portion is composed of a raised fiber having no color (white color) and having a high raised yarn height and a raised fiber having a colored and low raised yarn height, and forming a gradient portion by etching, the height of the raised portion is obtained. The area where the height is high looks white, while the area where the raised portion is low looks colored, and the color gradually changes from white to colored along the gradient, so that a high-class feeling can be obtained. In addition, napped yarns having a napped yarn height intermediate between napped yarns having a high napped yarn height and napped yarns having a low napped yarn height are included, and napped yarns having an intermediate napped yarn height have other colors. If it is colored, various color changes can be obtained, and the sense of quality is further improved.

  In addition, as a method of varying the height of the napped yarn, when the pile fabric is knitted or woven, after forming the napped portion using two or more types of yarn having different boiling water shrinkage rates as the napped yarn, Crimp is manifested after forming a raised portion using a blended yarn in which the non-crimped yarn and the crimped yarn are aligned and mixed as a method for heat treatment or as a raised yarn The method of making it etc. is illustrated.

  Next, the napped portion of the napped fabric is partially removed by a chemical etching method, and the height of the napped portion is gradually reduced to form a gradient portion having an inclination angle of 0.5 to 10 degrees. The raised fabric of the invention is easily manufactured.

  Here, when the napped portion is partially removed by a chemical etching method, it is preferable to use a rotary screen having a portion where the hole diameter of the etching treatment liquid discharge hole gradually increases. On the surface of the rotary screen, there are a plurality of etching solution discharge holes and at least a portion where the diameter of the discharge holes gradually increases. Since a large amount of the etching treatment liquid is discharged from the discharge hole having a large hole diameter, the napped portion is etched deeply and the height of the pile portion is lowered. On the other hand, since only a small amount of the etching treatment liquid is discharged from the discharge hole having a small hole diameter, the napped portion is etched shallowly. As a result, a gradient can be formed in one or more partial regions of the raised portion.

  Further, when a pattern is formed on the napped portion by etching, it is necessary that the discharge holes are arranged in a pattern corresponding to the rotary screen. For example, in the case where a pattern in which squares as illustrated in FIG. 4 are planarly formed is formed in the napped portion, it is necessary that the discharge holes be arranged in a pattern corresponding to this.

  The number of the rotary screens is preferably 2-5. By subjecting the gradient formed by the first rotary screen to further etching using the second and subsequent rotary screens, a smooth gradient with few fine irregularities as described above can be obtained. Note that five rotary screens are sufficient, and six or more rotary screens may increase costs.

As the arrangement density of the discharge holes of the rotary screen, about 50 to 90 rows / 2.54 cm is appropriate for the background. Moreover, it is preferable that it is the range of 15-25 cm < ³ > / m < ² > as the discharge amount from a rotary screen. When the discharge amount is more than 25 cm ³ / m ² , the alkali treatment agent may cause clogging of the alkali treatment liquid. On the other hand, if the discharge amount is less than 15 cm ³ / m ² , spots may be easily formed when the alkaline treatment liquid adheres to the raised portions.

  In the plurality of rotary screens, the number and / or arrangement of the ejection holes may be the same or different. For example, after the first rotary screen forms a gradient in the raised portion, the second rotary screen has a hole in the discharge hole of the second rotary screen so that it can be etched only on the minimum height side of the gradient portion. The number and / or arrangement may vary. Similarly, for the third and subsequent rotary screens, the number and / or arrangement of the discharge holes may be changed so that the etching process can be performed only on the minimum height side of the gradient portion.

  The type of the alkali treating agent is not particularly limited. For example, 30 to 70% by weight of 30% liquid alkaline caustic soda and 15% solid content of an original paste for etching (for example, Cell Pearl 587 manufactured by Adachi Dye Co., Ltd.) 70 A printing paste having a viscosity of 400 to 800 poise comprising ˜30% by weight is preferably exemplified.

  The raised fabric thus obtained may be subjected to a known colored print (for example, ink jet printing disclosed in Japanese Patent Application Laid-Open No. 2000-345483) or a conventional dye finish. Furthermore, various processes that provide functions such as ordinary water-repellent processing, ultraviolet shielding or antibacterial agents, deodorants, insect repellents, phosphorescent agents, retroreflective agents, and negative ion generators may be additionally applied.

  Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these. In addition, each measurement item in an Example was measured with the following method.

Boiling water shrinkage rate Using a measuring machine with a circumference of 1.125m, the sample was sampled 10 times to make a skein, and the skein was hung on the hanging nail of the scale plate, and then the load of 1/30 of the total weight of the skein And skein length L1 before processing is read. Then remove the load, put the skein in a cotton bag and immerse in boiling water for 30 minutes. Then, the skein is taken out, dried with filter paper and air-dried for 24 hours. Then, it is again hung on the hanging nail of the scale plate, the same load as above is hung on the lower part, and the length L2 of the skein after processing is read. The boiling water shrinkage (BWS) was calculated by the following formula. In addition, n number was set to 5 and the average value was calculated.
BWS (%) = (L1-L2) / L1 × 100

Crimp rate Using a measuring machine with a circumference of 1.125m, make a skein with a total fineness of 3333dtex, hang the skein on the hanging nail of the scale plate and hang the initial load of 6g and the load of 600g on the lower part, and the skein length L0 After reading, the load is removed immediately and the scale plate is removed and immersed in boiling water for 30 minutes to perform crimp expression processing. Then take out the skein, dry it with filter paper and air dry for 24 hours, hang it on the scale plate again, apply the load, read the skein length L1 after 1 minute, and then quickly remove this load for 1 minute. Read the rear skein length L2. The crimp rate was calculated by the following formula. In addition, n number was set to 5 and the average value was calculated.
Crimp rate (%) = (L1-L2) / L0 × 100

Inclination angle A
A 5 cm x 5 cm square sample is cut in the vertical and horizontal directions with respect to the length direction of the fabric, and is alkali-treated from the top of the raised portion using a digital microscope VHX manufactured by Keyence Corporation. The inclination angle A (degree) between the inclination direction toward the bottom and the horizontal direction was measured. In addition, n number was set to 5 and the average value was calculated | required.

Depth difference H
A 5 cm x 5 cm square sample is cut in the vertical and horizontal directions with respect to the length direction of the fabric, and is alkali-treated from the top of the raised portion using a digital microscope VHX manufactured by Keyence Corporation. The depth H (mm) to the bottom was measured. In addition, n number was set to 5 and the average value was calculated | required.

Gradient length W
A square sample having a length of 5 cm × 5 cm is cut in the vertical and horizontal directions with respect to the length direction of the fabric, and the length of the gradient portion shown in FIG. 1 is obtained using a digital microscope VHX manufactured by Keyence Corporation. W (mm) was measured. In addition, n number was set to 5 and the average value was calculated | required.

(6) The number of recesses and the ratio of the recesses per unit area of the gradient portion Using the scanning electron microscope SX-40 manufactured by Akashi Beam Technology Co., Ltd., the area 0. The number of recesses (number / cm ² ) of 05 mm ² or more was measured and used as the number of recesses. Moreover, the recessed part ratio (%) was computed by the following formula. In addition, n number was set to 5 and the average value was calculated | required.
Recess ratio (%) = (total area of recesses having an area of 0.05 mm ² or more) / (area of 40% region on the maximum height side of the gradient portion) × 100

High-quality feeling The high-quality feeling was classified into the following four stages and evaluated by three testers.
Grade 5 Excellent in terms of luxury.
Grade 4 Excellent in terms of luxury.
Grade 3 Slightly good in terms of luxury.
Second grade A little unsatisfactory in terms of luxury.
1st grade Poor in terms of luxury.

[Example 1]
Normal polyethylene terephthalate multifilament yarn (yarn count: 56 dtex / 24, boiling water shrinkage 10%, manufactured by Teijin Fibers Ltd.) and normal polyethylene terephthalate false twisted yarn (yarn count: 84 dtex / 72) Polyester yarn (yarn count: 140 dtex / 96) obtained by air-mixing with a known interlace nozzle with a crimping rate of 25%, manufactured by Teijin Fibers Ltd.) On the other hand, normal polyethylene terephthalate filament yarn (yarn count: 56 dtex / 24, manufactured by Teijin Fibers Ltd.) was used as the yarn for forming the ground texture, and these filament yarns were subjected to 28 gauge tricot warping. Supplied to all the knives of the knitting machine (Karlmeier) It was to organize the pile knitted fabric of the knitting density 69 course /2.54cm,28 wales /2.54cm the following knitting structure.
Ground organization: Back half organization (Back: 23/10, Front: 10/12 knitting)
The obtained knitted fabric was dyed at 130 ° C. for 30 minutes using a liquid flow dyeing machine manufactured by Nisaka Corporation. After dyeing, it is pre-processed (full cut brushing → shearing → hair split → shearing → preset) and has a knitting density of 64 courses / 2.54 cm, 35 wales / 2.54 cm with a cut pile (nap length 2 mm) Of napped fabric (the napped yarn density is 97217 dtex / cm ² ).

  In such a cut-pile fabric, a raised fiber having a high napped yarn height was formed from a polyethylene terephthalate multifilament yarn, and a raised fiber having a low napped yarn height was formed from a polyethylene terephthalate false twist crimped yarn.

  On the other hand, an alkali treating agent having a viscosity of 600 poise comprising 54% by weight of 30% liquid alkali caustic soda and 46% by weight of an original paste for etching having a solid content of 15% (for example, Cellpearl 587 manufactured by Adachi Dye Co., Ltd.) was prepared.

Next, using ^three rotary screens (manufactured by Takagi Engraving Co., Ltd.) having the following discharge holes and a discharge amount of 20.0 cm ³ / m ² , FIG. 5 (dark color) The gradient portion was formed in the pattern shown in FIG. At that time, etching portions by three rotary screens were overlapped. In addition, in the pattern formed in the raised portion, the length of one side of the square serving as the basic unit was 1 cm.

(Discharge hole)
Array density: 70 rows / 2.54 cm with history
The discharge holes are distributed corresponding to the pattern shown in FIG. 5 (the discharge holes with the largest hole diameter are arranged at positions corresponding to the darkest color portions, and the discharge holes with the small hole diameters are gradually arranged over the light color portions to obtain the lightest color portions. The position corresponding to is non-porous.)
Shape of discharge hole: 0.068mm in diameter
The fabric is dried and dried at a temperature of 130 ° C. for 5 minutes, and then subjected to a high temperature steamer treatment at a temperature of 165 ° C. for 8 minutes, washed with hot water and washed with water. As a result, the napped fabric having a plurality of gradient portions formed on the napped portion was obtained.

In the raised fabric, the inclination angle A of the gradient portion was 2 degrees, the depth difference H was 0.8 mm, and the length W of the gradient portion was 10 mm. Further, in the 40% region on the maximum height side of the gradient portion, the number of concave portions per unit area was 90 / cm ² and the concave portion ratio was 2%, and the surface of the gradient portion was smooth with few fine irregularities. Furthermore, the portion where the height of the raised portion is high along the gradient of the gradient portion appears light, while the portion where the height of the raised portion is low appears as a shadow and appears dark, and the light to dark color along the gradient. Since the shading gradually changes, it was excellent in terms of luxury (4th grade).

[Example 2]
Polyethylene terephthalate multifilament yarn (yarn count: 56 dtex / 72, manufactured by Teijin Fibers Ltd.) with heater length: 2 m, heat treatment temperature: 200 ° C., heat treatment speed: 500 m / min, overfeed rate: 5% A non-crimped polyethylene terephthalate multifilament yarn having a boiling water shrinkage of 3% was obtained by heat treatment.

  Separately, a polyethylene terephthalate false twisted yarn (resin colored with a black pigment) (yarn count: 84 dtex / 36, crimp rate 25%, manufactured by Teijin Fibers Ltd.) was obtained.

  Separately, cationic dye dyeable polyethylene terephthalate (manufactured by Teijin Fibers Limited) was melt spun and wound at a winding speed of 3500 m / min. Is stretched at a stretch ratio of 1.4 times without applying heat between the first roller having a temperature of 65 ° C. and the second roller having a temperature of 75 ° C. Polyethylene terephthalate filament yarn (yarn count: 56 dtex / 24) was obtained.

Next, a polyester mixed yarn (yarn count: 205 dtex / 132) obtained by air-mixing these three yarns using a known interlace nozzle was used as the yarn for the napped fabric, while the ground texture was used. Usual polyethylene terephthalate filament yarn (yarn count: 167 dtex / 48, boiling water shrinkage 10%, manufactured by Teijin Fibers Ltd.) was used as a forming yarn, and these filament yarns were equipped with a 28 gauge pole sinker. A pile knitted fabric having a knitting density of 66 courses / 2.54 cm and 28 wales / 2.54 cm was knitted with the following knitting structure by supplying it to all the cocoons of a tricot warp knitting machine (manufactured by KARL MAYER).
Organization: Back: 10/12, Front: 10/01

  The obtained loop pile fabric was subjected to a shearing machine (manufactured by Nikkiki Co., Ltd.), and the tip portion of the loop pile 0.2 mm was cut to form a cut pile. The cut pile fabric is subjected to a dry heat setter and subjected to a heat treatment at a temperature of 180 ° C. for a time of 45 seconds in the expanded state to stabilize the non-crimped polyethylene terephthalate multifilament yarns in the cut pile, and the pigment The resin-colored polyethylene terephthalate multi false twist crimped yarn was sufficiently crimped and the non-crimped cationic dyeable dyeable polyethylene terephthalate filament yarn was sufficiently heat-shrinked.

  In such a cut pile fabric, the napped yarn 2 having the highest raised yarn height is formed from the non-crimped polyethylene terephthalate multifilament yarn, and the highest raised yarn is formed from the non-crimped cationic dyeable polyethylene terephthalate filament yarn. A low napped yarn 4 was formed, and a napped yarn 3 having a middle napped yarn height was formed of a polyethylene terephthalate false twisted yarn colored with resin by a pigment.

The obtained cut pile fabric was dyed at 130 ° C. for 30 minutes using a cationic dye (blue) with a liquid dyeing machine manufactured by Nisaka Corporation. After dyeing, drying, pre-setting and knitting density 68 course / 2.54 cm, 30 wale / 2.54 cm napped fabric (cut nap density is 129,642 dtex / cm ² ) having cut pile (height of raised yarn 2 mm) ) The obtained napped fabric was processed in the same manner as in Example 1 using an alkali treating agent.

As shown schematically in FIG. 2, the raised fabric is formed with a gradient portion, the gradient angle A of the gradient portion is 2 degrees, the depth difference H is 0.8 mm, and the length W of the gradient portion is 10 mm. It was. Further, in the 40% region on the maximum height side of the gradient portion, the number of concave portions per unit area was 100 / cm ² and the concave portion ratio was 5%, and the surface of the gradient portion was smooth with few fine irregularities. Furthermore, the portion where the height of the raised portion along the gradient of the gradient portion is white appears white, then black, and the portion where the height of the raised portion is lowest appears to be a mixed color of black and blue. It was very excellent in terms of feeling (grade 5).

[Example 3]
In Example 2, except that the number of rotary screens is changed to two, the napped portion is partially removed by a chemical etching method in the same manner as in Example 2, and the napped portion is formed with a gradient. A fabric was obtained.

In the raised fabric, the slope angle A of the slope portion is 2 degrees, the depth difference H is 0.8 mm, the length W of the slope portion is 10 mm, and the number of recesses per unit area in the maximum height side 40% region of the slope portion. Was 120 pieces / cm ² , the recess ratio was 20%, and a slight unevenness was observed on the surface of the gradient part, but it was excellent (class 4) in terms of luxury.

[Example 4]
The raised fabric obtained in Example 2 was colored and printed by ordinary ink jet. The fabric on which the colored print was applied was excellent in appearance with a deep and dense gradient difference depending on the viewing angle.

[Example 5]
In Example 1, the napped portion was formed by a chemical etching method in the same manner as in Example 1 except that the discharge amount of the rotary screen was changed to 26.3 cm ³ / m ² and the number of rotary screens was changed to 1. By removing partially, the napped fabric in which the napped portion has a gradient with many fine irregularities was obtained.

In the raised fabric, the gradient angle A of the gradient portion was 2 degrees, the depth difference H was 0.8 mm, and the length W of the gradient portion was 10 mm. Further, in the 40% region on the maximum height side of the gradient portion, the number of concave portions per unit area was 150 / cm ² and the concave portion ratio was 25%, and fine irregularities were seen on the surface of the gradient portion. Slightly good (3rd grade).

  The napped fabric of the present invention has a gentle slope on the napped surface and is rich in luxury, so it can be suitably used in the fields of vehicle interior materials, interior materials, clothing, etc., and has high practicality. It is.

Claims (2)

The napped portion of the napped fabric composed of a ground tissue portion having a knitted fabric structure made of organic fiber yarns and a napped portion made of polyester fiber is partially removed by a chemical etching method, and the napped portion height Is a method for producing a napped fabric that forms a gradient portion having an inclination angle of 0.5 to 10 degrees by gradually reducing
A method for producing a napped fabric characterized by using a rotary screen having a portion in which the hole diameter of the etching treatment liquid discharge hole gradually increases when the napped portion is partially removed by a chemical etching method. The method for producing a napped fabric according to claim 1, wherein chemical etching treatment is performed by superimposing continuously using 2 to 5 rotary screens.

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