JPH05287638A - Multicolored sheet - Google Patents

Abstract

PURPOSE:To provide a multicolored sheet, having smooth surface touch and good quality by subjecting the tip of cut pile yarn in a cut and loop pile sheet formed of pile yarn of core-sheath conjugate yarn composed of polymer components different in dyeability to protruding treatment of the core part and then dyeing the resultant core-sheath part in different colors. CONSTITUTION:Filament yarn of core-sheath conjugate fiber, composed of polymer components different in dyeability between the core and the sheath parts such as a polyester as the core and nylon as the sheath and having <=50 denier single yarn size is used to form pile yarn, which is subsequently set on a base fabric to afford a pile sheet having a cut pile region and a loop pile region formed therein. The pile sheet is then subjected to heat shrinking treatment such as dipping in boiling water to protrude the core part from the sheath part in the pile yarn tip of the cut pile region by >=4 times that of the major diameter of the conjugate fiber. The core and sheath parts of the conjugate fiber are subsequently dyed in different colors to afford the objective multicolored sheet having different colors and hues in the cut pile region and loop pile region and >=10 lightness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a different color sheet in which a loop pile area (hereinafter referred to as an L area) and a cut pile area (hereinafter referred to as a C area) exhibit a clear different color effect.

[0002]

2. Description of the Related Art A conventional pile sheet produces a shade-different color depending on the amount of light reflection between the side surface of the loop pile and the end surface of the cut pile, or mixes fibers with different dyeability and mixes them together. Attempts have been made to construct different regions of the L and C regions with fine mixed fibers and dye them in different colors.

The different color sheet obtained by the method of producing the different shades of color depending on the magnitude of light reflection has a sufficient difference effect when the lightness difference (hereinafter referred to as ΔL value) between both areas is less than 10. In particular, when a pattern was to be produced in either the L area or the C area, the boundary between both areas was blurred and the quality was poor.

In practice, both pile areas become more obscure as the number of uses increases, and for example, L area or C
When a thin line or character is printed in any of the areas, there is a problem that the line or character disappears, and in the area C, the tip of the pile is simply cut and the feel is rough. There was a problem and it was of poor quality as a whole.

Further, even if the L region and the C region are constituted by a mixed fiber mix pile of fibers having different dyeability, and the different colors are dyed with different colors, the obtained different color is obtained only when the fibers of each other are blurred. In particular, it is difficult to express a continuous geometric pattern, and in fact, this kind of sheet does not exist in the market.

In order to obtain a different color in the cut pile single sheet or the loop pile single sheet, a method of producing a shaded pattern by the length of the pile or a multicolored pattern by printing is adopted. There is.

[0007]

A sheet having such a shading pattern attempts to form a pattern due to the difference between the part directly exposed to light and the part difficult to hit due to the length of the pile, but the ΔL value is It was as low as 5 or less, and the color tone was monotonous and the quality was low. In addition, such a sheet has a drawback in that, as the frequency of use increases in practice, a pile having a long pile length becomes loose and the pattern disappears.

[0008] On the other hand, the method by printing is the L area and C
It is difficult to color the pile sheet by combining the areas, and the different color effect is not obtained.

In view of the background of the prior art described above, the present invention is an L
It is an object of the present invention to provide a different color sheet which is deep and elegant, has a clear different color at the time of painting, and has a smooth surface touch even though it is a pile sheet composed of a region and a C region.

[0010]

The present invention employs the following means in order to achieve the above object.

That is, the different color sheet of the present invention is a pile sheet comprising a base fabric and colored core-sheath structure fiber pile, and the pile is composed of a loop pile area and a cut pile area, and The pile forming the cut pile region is characterized in that the core projects from the sheath at the tip.

[0012]

According to the present invention, a pile having a core-sheath structure in units of single fiber constitutes the L region and the C region, and the pile constituting the C region is a pile in which the core protrudes from the sheath at the tip. By doing so, it has been clarified that, while having a surprisingly deep and refined different color, a clear different color effect at the time of painting with the L region is exhibited.

According to the present invention, when the C area and the L area made of such specific cut piles are combined, both areas have a gray level difference color having a ΔL value of 10 or more and completely different hues, for example, the C area is yellow. The present invention has been completed by finding that the L region can achieve a hue difference such as red.

In the present invention, a core-sheath structure fiber is used as the pile forming the different color sheet. That is, the pile sheet of the present invention is composed of fibers having a core-sheath structure in a single fiber unit on the same sheet, and the gathered portion of the cut pile in which the core protrudes from the sheath at the tip, and the gathered portion of the loop pile. And is a specific pile sheet forming a surface with respective regions.

The size of the surface of each area affects the contrast and different color effect of the pattern. For example, in a pile sheet in which a curved surface of one loop pile and an end surface of one cut pile are alternately adjoined and mixed, even if they are dyed with different colors, they are visually mixed and blurred. It does not look like. Therefore,
Each of the above-mentioned regions preferably has a combination of lines and planes, planes and planes, for example, a line preferably has a thickness of 3 mm or more, and a plane preferably has an area of 9 mm ² or more. Stuff used.

In the present invention, the fibers constituting the pile are core-sheath structure fibers. As such a pile, a composition having a core composition and a polymer composition of a sheath, which have the same dyeability but different dyeability, or those having different dyeability can be used. It is preferable for exhibiting the properties. Examples of such a polymer composition include acid dye / disperse dye, disperse dye / cationic dye,
A combination of acid dye / cation dye etc. is used. As the polymer exhibiting dyeability to such a dye, polyamide can be used for the acid dye, polyester for the disperse dye, cationic dyeable polyester, cationic dyeable polyamide, etc. for the cationic dye.

In the pile of the present invention, as the pile in the C region, a pile having a core protruding from the sheath at the tip is used. Therefore, in the above-mentioned polymer composition, a combination in which the core is protruded by the subsequent heat treatment or chemical treatment is preferable, and in particular, the core-sheath structure fiber made of a combination of polyamide and polyester is preferably used from the viewpoint of clear different color dyeing property. ..

The method for obtaining the cut pile in which the core protrudes from the sheath is not particularly limited. For example, a method in which the core is protruded by a heat shrinkage treatment such as dry heat or wet heat, hot water, high frequency heating, or the like, A method in which the core is left and only the sheath is dissolved or decomposed with a chemical from the tip to remove it is adopted. Among these methods, the former method is preferable because it does not damage the fibers and the protrusion length can be easily adjusted. In the former method, for example, if the dyeing temperature meets the heat shrinkage condition, it can be carried out at the time of dyeing, which is economical.

The thickness of the single fibers constituting the pile of the present invention,
The length and cross-sectional shape vary depending on the application and required quality,
For example, the single yarn fineness of the pile is preferably about 0.01 to 10 d, more preferably 1 to 5 for clothing.
The thing of about d is used. For rugs, those having a thickness of preferably about 5 to 50 d, more preferably about 10 to 30 d are used. In the case of rugs, thick piles of more than 50 d have a rough texture, and thin piles of less than 5 d tend to cause practical problems such as being easily worn.

The pile length of such a pile may be such that the cut pile length and the loop pile length are uniform, that is, if the pile heights are uniform, the different color effect may be excellent, but the overall length is Is preferably in the range of 2 to 50 mm, more preferably 5 to 20 mm, because of its different color effect and sharpness.

When the pile lengths are not uniform, for example, when the cut pile length is extremely longer than the loop pile length, L
The discoloration effect of the region tends to be unclear, the pattern tends to be blurred, and the pile tends to be degraded due to long-term use, resulting in poor quality. On the other hand, when the L region is long, the white tint tends to be emphasized as a whole.

Therefore, the loop pile length and the cut pile length are within ± 5 mm for rugs and ± 2 mm for clothing.
Those within the range of (4) are preferably used because the effect of different colors is easily emphasized.

The cross-sectional shape of the monofilament may be a circle, a flat shape, a multi-lobed shape, or the like, but may be any shape that allows the core at the tip of the end face of the cut pile to be projected later. Above all, it is preferable that the cross-sectional shape of the core is as close to a circle as possible, and the outer shape of the cross-section of the sheath is preferably elliptical, multilobal, circular, and multilobal. That is, the cross-sectional shape of the core is easily projected by, for example, heat shrinkage, and the sheath has the advantages that the fiber-opening property and the light-absorbing property are good and the color is easily darkened.

The core / sheath ratio of the pile is a cross-sectional area ratio of preferably 1: 9 to 9: 1, more preferably 4 :.
Those having a range of 6 to 6: 4 are preferably used from the viewpoint of discoloration and sharpness.

The cut pile constituting the C region of the present invention has a core projecting from the end face of the sheath at the cut end face of the core-sheath structure fiber, preferably 4 times or more the diameter of the fiber, It is preferable that the protrusion is 6 times or more, which is excellent in the effect of different colors.

As for the pile density in the C region, the sum of the cut pile cross sections is preferably 30 with respect to the total area of the base cloth.
% Or more, and more preferably 50% or more is excellent in a clear different color effect.

The side shape of the pile single yarn is also a factor for making the different color effect clear. For example, the smaller the Ken shrinkage is, the better the sharpness is. 0% is the best. However, in order to satisfy both the hair cracking resistance and the volume feeling at the same time, a pile having a crimping degree in the range of about 7 to 10% is preferably used.

The different-color dyeing may be carried out after the pile sheet is formed. For example, a dyeing method such as a dip dyeing method or a thermosol method may be employed. The post-dyeing method of the dip dyeing method allows simultaneous different color dyeing. It is preferable because it can provide a product without sagging.

In the different color dyeing, it is possible to easily achieve similar color dyeing by changing the dyeing densities of the sheath and the core, but the dark and light color heterogeneity is as long as the ΔL value is 10 or more. Sharpness is not achieved.

On the other hand, dyeing with different hues can be achieved by dyeing the core and the sheath in different colors and using the above-mentioned different dyes.

The fibers constituting the base material (base cloth) of the different-colored sheet are also different depending on the use, and there is no particular limitation, but natural fibers such as cotton, silk and hemp, or polyester, polyacrylonitrile, Polymer sheets made of synthetic fibers such as polyethylene, polypropylene and polyamide can be used, but polypropylene fibers are preferred in the case of rugs.

Next, the different color sheet of the present invention will be described with reference to FIG.

In FIG. 1, a loop pile B and a cut pile C are aggregated to form a surface and tufted on a substrate A to form an L region and a C region, respectively.

FIG. 2 is a schematic view showing a cross section of a conventional pile sheet, and the cut pile D in this figure shows the shape as cut.

In the sheet of different color as in the present invention, the protruding fiber having a polymer composition different from the dyeability of the sheath at the tip of the cut pile is arranged in the core, so that a distinct color from the loop pile is realized, and ΔL Since a value of 10 or more can be easily realized, it is possible to easily form a different color sheet having a completely different hue in addition to the dark and light different colors.

[0036]

EXAMPLES The present invention will be described in more detail below with reference to examples.

Next, the sheet forming method, the protruding fiberizing method, the dyeing method, and the colorimetric method used in this embodiment will be described.

1. Sheet forming method For rugs, a core-sheath composite yarn having a core with a circular cross-sectional shape and a sheath with a cross-sectional outer shape of 3 leaves, with a core / sheath ratio of area ratio of 4: 6, a core of polyester, and a sheath of nylon , A continuous pile yarn of filaments with a single yarn fineness of 20 denier and a total denier of 2,000 denier, made of polypropylene using a tufting machine set to automatically form cut and loop pile areas. 700 g on cloth
The pile sheet constituting the C region and the L region was obtained by tufting so as to have a basis weight of / m ² .

The pile length of this pile sheet is 10 mm for the loop pile and 12 for the cut pile.
It was mm. The area ratio of the C region to the L region was 2: 3, the C region was 40% of the whole, and the ratio of the yarn cross section on the sheet was about 60%.

On the other hand, for clothing, the cross-sectional shapes of the core and the sheath are
Concentric circles, core / sheath ratio area ratio of 1: 1, cation dyeable polyester core, nylon sheath, single yarn fineness of 3 denier, total denier of 1,000 denier continuous filament yarn Pass it through the needle for cultural embroidery, and make a basis weight of 300 g / m ^{2 on} the cotton base cloth.
After forming the loop pile, the back surface was fixed with an adhesive resin (Boncoat AF-616: manufactured by Dainippon Ink and Chemicals, Inc.) so that the thread would not come off. Then, the pattern portion composed of the loop pile on the surface was raised with a fluffing needle cloth, and the ends were made uniform in length with a household hair clipper to obtain a pile sheet constituting the C region and the L region.

The pile length (height) from the substrate surface was 5 mm for the loop pile and 6 mm for the cut pile. The area ratio of the C region and the L region and the ratio of the yarn cross section on the sheet were the same as those of the rug sheet.

2. Method of Protruding Fiber and Measuring Method Thereof The pile sheets for rugs and clothes obtained in the above 1 were cut into a size of 20 cm × 20 cm. Next, put 5 liters of water in a 10-liter stainless steel cylindrical vat, put the two piled sheets into sufficiently boiled hot water, treat for 30 minutes, cool the hot water, and then cool the piled sheet. Was taken out to complete the protruding fiberization. For the protruding fiber length of the cut pile portion of these pile sheets, the length of the protruding portion was measured with a caliper, and the length of the protruding fiber was determined by the ratio with the fiber diameter of the single fiber forming the pile. As a result, the protruding fiber length of the cut pile for rugs is
The thickness was about 30 times the single fiber thickness, and about 22 times for clothing.

3. Dyeing method For rugs, 1% ow of an acid dye for nylon, which is a sheath component (manufactured by Sand Co .: Nirosan Blue N-GFL 167%)
f, 3% of dyeing aid (Nippon Chemical Co., Ltd., New Bon TS) is used without dye for core polyester.
Put the pile sheet formed in the above 1 and 2 into a dye bath containing owf and ammonium sulfate 3% owf.
Dye in bath for 60 minutes at 0 ° C. Then, it was washed with water to prepare a different color sheet.

On the other hand, for clothing, an acidic dye for nylon which is a sheath component (Nairosan Blue N-GFL 1 manufactured by Sand Co.)
67%) and 1% owf of 1% owf and 1% owf of a cationic dye of a normal pressure cationic dyeable polyester (Hodogaya Chemical Co., Ltd .: Catillon Yellow 3R-DP dye) as a core component, and a dyeing aid ( Adjust the pH of the dye bath to 4.0 with acetic acid: 45% solution, and add 0.5% sodium acetate.
% Owf was added, and the pile sheet obtained in the above 1 and 2 was put into a bath having a bath ratio of 1:20, and the pile sheet was heated at 100 ° C.
Dye in bath for 0 minutes. Then, it was washed with water and dried to prepare a different color sheet.

4. Colorimetric Method, Hue Judgment Method and Judgment Method of Different Color Effect ΔL value is L value of L area and C area of the above different color sheet by using C light source of multi-light source spectrocolorimeter manufactured by Suga Test Instruments Co., Ltd. Was determined by colorimetric comparison.

On the other hand, the hue and the effect of different color were evaluated by visual evaluation by 10 randomly selected people according to the opinions of 8 people.

The hue determination is based on what color each person looks like. The criteria for determining the different color effect are as follows.

◯: Vivid and clear distinction including shade difference and hue difference ×: It is unclear at any point of 〃, and the boundary between the L region and the C region is blurred.

Examples 1 and 2 Using two types of pile yarns having different cross-sectional shapes and thicknesses, different color sheets are made by the above-mentioned methods 1 to 3, and used for rugs (Example 1) and for clothing (Example 2). ) L value was calculated for each.

As is clear from Table 1, in Example 1, Δ
The L value was remarkably high at 48.6, and the difference in shade was particularly clear. On the other hand, in Example 2, it was judged by visual evaluation that the C area was a yellow sheet and the L area was a blue sheet having a distinct hue with a clear hue. The surface touch of this sheet was a soft, high-quality, different-color sheet.

Also, the change of the different color effect after using for half a year is
It was hardly seen and kept high quality.

Comparative Examples 1 and 2 On the other hand, the monofilament forming the pile has no core-sheath structure and the cross-sectional outer shape is the same as that of Examples 1 and 2,
For single yarn fineness, use the same nylon pile yarn and
A cut-and-loop pile sheet was formed by the method described in 1. Next, 1% owf of an acid dye for nylon (Nairosan Blue N-GFL 167% made by Sand Co.), 3% owf of a dyeing aid (Nippon Kagaku Co., Ltd .: New Bon TS) and 3% owf of ammonium sulfate. The above pile sheet was put into a dyebath in which each of the above was blended and dyed in the bath at 100 ° C. for 60 minutes.
Then, it was washed with water to prepare a different color sheet.

As is clear from Table 1, compared with Examples 1 and 2, the ΔL values of the L region and the C region are (20)
Both d: Comparative Example 1) and clothing (3d: Comparative Example 2) were as low as 10 or less, a sufficient discoloration effect was not obtained, and the surface touch was rough and the quality was insufficient.

[0054]

[Table 1]

[0055]

EFFECTS OF THE INVENTION The different color sheet according to the present invention has a significantly improved shade difference color as compared with the conventional different color sheet, while having a freely selected hue different color and having a soft surface touch. Things can be provided.

[Brief description of drawings]

FIG. 1 is a schematic view showing a cross section of a different color sheet of the present invention.

FIG. 2 is a schematic view showing a cross section of a conventional cut-and-loop pile fabric.

[Explanation of symbols]

 A: Base material (base fabric) B: Loop pile area (L area) C: Cut pile area with protruding tip (C area) D: Cut pile area without protruding tip (C area)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location D06P 3/86 7306-4H

Claims (7)

[Claims] 1. A pile sheet comprising a base fabric and a colored core-sheath structure fiber pile, the pile comprising a loop pile region and a cut pile region, and
The pile forming the cut pile region has a core projecting from a sheath at the tip, which is a different color sheet. 2. The different color sheet according to claim 1, wherein the loop pile region and the cut pile region are composed of the same core-sheath structure fiber, and the difference in brightness between both regions is 10 or more. 3. The different color sheet according to claim 1, wherein the core-sheath structure fiber is composed of polymer components having different dyeability in the core and the sheath. 4. The loop pile region and the cut pile region are composed of fibers having the same core-sheath structure, and the loop pile region and the cut pile region have different hues.
Different color sheet described. 5. The different color according to claim 1, wherein the cut pile region is constituted by a pile in which the core protrudes from the end surface of the sheath of the core-sheath structure fiber with a length of 4 times or more of the maximum major axis of the fiber length. Sheet. 6. The different color sheet according to claim 1, wherein the fiber lengths of the loop pile and the cut pile are substantially equal to each other. 7. The different color sheet according to claim 1, wherein the pile is composed of a core-sheath structure fiber having a single yarn fineness of 50 denier or less.