JP5408795B2 - Method for producing embossed textile for vehicle interior - Google Patents

Description

  The present invention relates to a vehicle in which a transfer sheet on which a pattern is drawn on a sheet is superimposed on a fabric to be processed and passed through a heated embossing roll to transfer the pattern on the transfer sheet to the fabric to be processed, and an embossed recess is formed at the transfer portion of the pattern. The present invention relates to a method for producing an embossed textile fabric for interior use.

  It is well known to transfer an image of a transfer sheet to a fabric to be processed and to form an embossed recess at a transfer portion of the pattern (see, for example, Patent Documents 1 and 2).

JP 07-001826 A JP 07-150485 A

Transfer sheets include those using a pigment together with a binder resin on the transfer surface and those using a sublimation dye on the transfer surface.
In a fabric to be processed that has a transfer sheet using pigment overlaid on the transfer surface and passed through a heated embossing roll, the binder resin is also transferred to the embossed recess and covered with the transfer coating of the binder resin. The texture of the fabric to be processed becomes rough and hard due to the transferred binder resin, and the transfer coating is peeled off, so that there is a feeling of calmness, excellent durability, and a soft texture is difficult to obtain.

  In a fabric to be processed that is passed through a heated embossing roll with a transfer sheet using a sublimation dye, only the sublimation dye is transferred to the embossed recess, the fabric does not become coarse, and the embossed recess is bright. An embossed textile with a good touch can be obtained without giving off.

  However, most transfer sheets using sublimation dyes are commercially available for apparel-related fabrics, and the apparel-related printed fabrics are evaluated relatively severely for washing resistance and friction resistance. There are many cases where strict evaluation criteria are not provided for light fastness, and a sublimation dye that can be used for embossed textiles for vehicle interiors used under severe conditions exposed to direct sunlight. The transfer sheet used is not commercially available.

Therefore, the present invention provides a test piece of an interior fabric set on a vertical surface in which a rotation radius from a xenon lamp of a cylindrical rotating frame rotating once per 60 seconds around a vertically supported xenon lamp is 290 mm. After irradiating a xenon lamp having an illuminance of 150 W / m ² and a wavelength of 300 to 400 nm set at the center for 38 hours at 73 ± 3 ° C. for 3.8 hours and then at 38 ± 3 ° C. for 1 hour alternately, JIS Xenon lamp irradiation light fastness test method (hereinafter referred to as KQS light fastness test method) for determining the degree of color fading of the irradiated portion of the xenon lamp of the test piece of the interior fabric using the gray scale for color fading defined in -L-0804 )) A sublimation dye excellent in light fastness (hereinafter referred to as KQS light sublimation dye) to the extent that discoloration is determined to be 4 or higher and fading is determined to be 3 or higher. .) Is used, and an embossed textile for interior use of a vehicle, to which a KQS light-sublimation dye having excellent light fastness is transferred using the KQS transfer sheet is obtained. The purpose is to obtain.

  The present invention provides a KQS transfer sheet using a KQS light-sublimation dye having excellent light fastness to such an extent that discoloration is grade 4 or higher and fading is judged to be grade 3 or higher in the KQS light resistance test method. First, a vehicle interior fabric that is dyed using a sublimation dye and has a color change of 4 or higher and a color fading of 3 or higher in the KQS light resistance test method, has a color change of 4 or higher in the KQS light resistance test method. And selecting a KQS light-resistant sublimation dye that is excellent in light fastness to such an extent that fading is determined to be grade 3 or higher, and preparing a KQS transfer sheet using the selected KQS light-sublimation dye, In addition, the vehicle interior fabric is passed through the heated embossing roll using the KQS transfer sheet, and the convex portion of the heated embossing roll is transferred as a concave portion together with the pattern of the KQS transfer sheet. And summarized in that to obtain S and a light resistance test method determines discoloration quaternary or higher and fading tertiary or more vehicle interior embossed printing fabric.

More specifically, the first feature of the method for producing an embossed textile fabric for vehicle interior according to the present invention is, firstly, a textile fabric printed with a sublimation dye, and the judgment is discolored in the KQS light resistance test method. A KQS light-sublimation dye imprinted on a printed fabric that is higher than grade and fading grade 3 or higher is applied to the transfer sheet paper to prepare a KQS transfer sheet. Second, KQS light resistance of the KQS transfer sheet The surface to which the KQS light-resistant sublimation dye was applied with the sublimation dye was superimposed on a fabric to be processed having a thickness t of 0.3 to 4.0 mm and a bulk density of 0.5 g / cm ³ or less, and the heating temperature was 180 to 220. The temperature of the convex portion is set to 2 kg / mm or more and passed through a heated embossing roll, and the processed fabric is provided with irregularities on the peripheral surface of the heated embossing roll. Transferring the light sublimable dye, the third, at the same time as the unevenness-shaping is to the bulk density of the embossed depressions 11 at least 1.5 times the bulk density of the embossed convex portion 12.

  A second feature of the method for producing an embossed textile fabric for vehicle interior according to the present invention is that the fabric to be processed obtained by transferring the KQS light-sublimation dye through a heated embossing roll in addition to the first feature is 160 to 180. It is in the point which heats for 30 seconds or more at ° C.

A third feature of the method for producing an embossed textile fabric for vehicle interior according to the present invention is that, in addition to the first and second features, the transfer speed of the heated embossing roll is 5 m / min or less, and the KQS transfer sheet. The basis weight of the paper is 20 to 150 g / m ^2, and the KQS light-sublimation dye is transferred only to the embossed recess 11 of the fabric to be processed.

  The fourth feature of the method for producing an embossed textile fabric for vehicle interior according to the present invention is the total surface area of the fabric to be processed having the area of the embossed recess 11 in addition to any of the first, second and third features. The area ratio is less than the area ratio of the area of the embossed convex portion 12 to the total surface area of the fabric to be processed, and the radius r of the inscribed circle 14 inscribed in the contour 13 of the embossed concave portion 11 is set to 10 mm or less. is there.

  In the present invention, based on a vehicle interior fabric that is dyed using a sublimation dye and has a color change grade 4 or higher in the KQS light resistance test method and determined to be a color fade grade 3 or higher, the color change grade 4 or higher in the KQS light resistance test method. In addition, a KQS light-sublimation dye excellent in light fastness to such an extent that it is judged as fading grade 3 or higher is selected, and a KQS transfer sheet is prepared using the selected KQS light-sublimation dye. In the KQS light resistance test method, there is provided an embossed textile for vehicle interior having excellent light resistance, in which the color fastness determination of the light fastness by the gray scale for color fading in the embossed recess 11 is grade 4 or higher and the color fading judgment is grade 3 or higher. Can be obtained.

  And when the embossed textile fabric for vehicular interior that has transferred the sublimation dye through the heated embossing roll is heated at 160-180 ° C for 30 seconds or more, the transferred sublimation dye diffuses inside the fabric fiber. Therefore, the light resistance of the embossed textile for vehicle interior is further enhanced.

  Further, in the embossed textile fabric for vehicle interior of the present invention, the sublimable dye is transferred only to the embossed concave portion 11 where the bulk density is 1.5 times or more the bulk density of the embossed convex portion 12 and the fiber density is dense and difficult to wear. In particular, the area ratio of the embossed recess 11 to the entire surface area of the fabric is made smaller than the area ratio of the embossed convex part 12 to the entire surface area of the fabric, and the inside of the embossed recess 11 is inscribed in the contour 13 of the embossed recess 11. If the size of the embossed recess 11 is made fine enough that the radius r of the contact circle 14 is 10 mm or less, the pressing force from the raised portion of the heated embossing roll tends to concentrate on the portion corresponding to the embossed recess 11 of the fabric to be processed. Not only is the embossed concave part 11 to which the sublimation dye is transferred being rubbed by the embossed convex part 12 which is shaped and raised on the embossed textile fabric for vehicle interior. Is difficult, it increases the durability of the transfer pattern along its embossed depression 11.

The thickness of the fabric to be processed applied to the present invention is 0.3 to 4.0 mm, the bulk density of the fabric to be processed serving as the embossed recess 11 is 0.5 g / cm ³ or less, and the fabric to be processed is bulky. Inflated.
For this reason, when passing through the heated embossing roll, the tip of the convex portion of the heated embossing roll forms a deep embossed recess 11 that cannot be restored by pressing the surface of the processed fabric. The portion facing the concave portion of the heated embossing roll is not subjected to strong pressing from the concave portion of the heated embossing roll, and the shape of the unevenness between the embossed concave portion 11 and the embossed convex portion 12 formed on the fabric to be processed is clear and clear. Become sharp.
At the same time, the surface of the fabric to be processed that faces the concave portion of the heated embossing roll is not pressed strongly even if it touches the concave portion of the heated embossing roll, and is only lightly touching the concave portion of the instantaneously heated embossing roll. The KQS light-proof sublimation dye is not transferred from the KQS transfer sheet to the embossed convex portion 12 of the fabric to be processed that faces each other. Therefore, the surface of the embossed convex portion 12 of the fabric to be processed becomes the KQS transfer sheet. The contrast between the colored embossed concave portion 11 stained with the KQS light-resistant sublimation dye and the uncolored embossed convex portion 12 unstained with the KQS light-sublimable dye is clear without being touched and contaminated with the KQS light-resistant sublimation dye. An embossed textile for vehicle interior is obtained.

1 is an enlarged perspective view of an embossed textile fabric for vehicle interior according to the present invention. It is a surface view of a transfer sheet.

In order to increase the bulk density of the embossed textile fabric for vehicle interiors to 1.5 times or more the bulk density of the embossed convex portion 12, the bulk density of the fabric to be processed should be 0.5 g / cm ³ or less, It is desirable to make the processed fabric bulky and make it easy to reduce the bulk in the embossed recess 11. For this purpose, it is preferable to raise the surface of the processed fabric on which the pattern is drawn through the embossing roll.
In order to make it easy to reduce the bulk in the embossed recess 11 when forming the unevenness, it is sufficient to use a work cloth that is thick and has a low bulk density and can be easily compressed, but if the work cloth is too thick, A heated embossing roll with a large unevenness difference is required, and such a heated embossing roll with a large unevenness on the peripheral surface is expensive to manufacture and must be handled with care so as not to damage the unevenness on the peripheral surface, The management cost is expensive.
And in the embossing textile fabric for vehicle interiors with the large unevenness | corrugation difference of the embossing recessed part 11 and the embossing convex part 12, the embossing convex part 12 is easy to be crushed, and it becomes a problem also in terms of durability.
Considering these points, the thickness t of the fabric to be processed is set to 0.3 to 4.0 mm, preferably 0.6 to 3.0 mm.

In order to sharpen the contour of the concavo-convex pattern, a thermoplastic synthetic fiber, preferably a polyester fiber, having a single fiber fineness of 3 dtex or less and easy to heat set is applied to at least a part of the surface of the fabric to be processed.
Further, in the present invention, in order to make the contour of the concavo-convex pattern clear, the heating temperature by the heating embossing roll is set to 180 to 220 ° C., and the convex line pressure is set to 2 kg / mm or more. / Mm or more, the transfer speed is 5 m / min or less, and the area ratio of the area of the embossed recess 11 to the total surface area of the fabric to be processed is the total surface area of the fabric to be processed having the area of the embossed protrusion 12. The radius r of the inscribed circle 14 inscribed in the contour 13 of the embossed recess 11 is set to 10 mm or less so that the linear pressure from the heated embossing roll is concentrated on the embossed recess 11.
The transfer speed of the heated embossing roll is set to 5.0 m / min or less, preferably 1.0 m to 3.0 m / min.

  When selecting a KQS light-resistant sublimation dye to be applied to the KQS transfer sheet, it is preferable to examine a sublimation dye used in an existing vehicle interior fabric having excellent light fastness.

In order to select KQS light-resistant sublimation dye, a multi-layer of 100% regular polyester of 84 dtex / 36f for back knitting yarn and 110 dtex / 156f for middle knitting yarn and front knitting yarn of three-sheet tricot warp knitting machine. A wale density knitted by applying filament yarn was 28 wale / 25.4 mm, a course density was 60 course / 25.4 mm, and a fabric weight of 205 g / m ² tricot warp knitted fabric was used as a reference fabric, and the reference fabric was selected in advance. It was dyed with a sublimation dye having good light fastness, and the light fastness of the reference fabric was examined by the KQS light fastness test method. In the KQS light fastness test method, the discoloration was grade 4 or higher and the fading was judged to be grade 3 or higher. The dye applied to the reference fabric is selected as a KQS light-resistant sublimation dye.
The dyeing of the reference fabric with the sublimation dye is performed by a liquid dyeing machine, the reference cloth dyed through the liquid dyeing machine is relaxed at 132 ° C. for 30 minutes, dried at 150 ° C. for 3 minutes, and thereafter Then, brushing treatment is applied to select a KQS light-resistant sublimation dye.

If the KQS transfer sheet is too thin, the KQS transfer sheet is likely to be torn at the time of forming the unevenness, and if it is too thick, the unevenness on the peripheral surface of the heated embossing roll is difficult to be transferred to the work cloth. Considering this point, a paper having a basis weight of 20 to 150 g / m ² , preferably a thin paper having a basis weight of 20 to 60 g / m ² is used for the KQS transfer sheet.
In order to prepare the KQS transfer sheet, an on-demand inkjet printing apparatus or a gravure printing apparatus may be used as an apparatus for applying a KQS light-proof sublimation dye to the transfer sheet paper.

[KQS light-resistant sublimation dye selection]
As a dye for selecting a KQS light-resistant sublimation dye, Nippon Kayaku Co., Ltd. disperse dyes Kaylon-Polyester-Yellow-KWN (yellow dye), Kayalon-Polyester-Red-KWN (red dye), Kayalon-Polyester-Blue-KWN (Blue dye) was prepared, and a dye liquor with these dyes was prepared as follows.
(Staining condition 1: Yellow)
Dye: Kayalon-Polyester-Yellow-KWN ... 1.3% owf
Dispersing leveling agent: Nikka Chemical Co., Ltd. Nikka Sun Salt RM-EXE ... 0.4cc / L
PH adjuster: Ultra MT-FH manufactured by Mitsima Chemical Co., Ltd. 0.4cc / L
Bath ratio: 8.3
(Dyeing condition 2: Red)
Dye: Kayalon-Polyester-Red-KWN …… 1.3% owf
Dispersing leveling agent: Nikka Chemical Co., Ltd. Nikka Sun Salt RM-EXE ... 0.4cc / L
PH adjuster: Ultra MT-FH manufactured by Mitsima Chemical Co., Ltd. 0.4cc / L
Bath ratio: 8.3
(Dyeing condition 3: Blue)
Dye: Kayalon-Polyester-Blue-KWN ......... 1.3% owf
Dispersing leveling agent: Nikka Chemical Co., Ltd. Nikka Sun Salt RM-EXE ... 0.4cc / L
PH adjuster: Ultra MT-FH manufactured by Mitsima Chemical Co., Ltd. 0.4cc / L
Bath ratio: 8.3

[Standard fabric dyeing]
Using the dyeing solution prepared according to the dyeing conditions 1 and 2 and 3 above, using a CUT-MF-2L type liquid dyeing machine manufactured by Nisaka Manufacturing Co., Ltd., 84 dtex / 36f, a wale density of 28 wale / 25.4 mm, a course density of 60 course / 25.4 mm, knitted by applying a 100% polyester multifilament yarn of 110 dtex / 156 f to the middle and front knitting yarns, After dyeing a standard green machine having a basis weight of 205 g / m ² , drying and raising, the wale density was 40 wale / 25.4 mm, the course density was 61 course / 25.4 mm, the basis weight was 309 g / m ² , and the bulk density was 0.31 g / The finished fabric was a standard dyed raised fabric having a thickness of cm ³ and a thickness of 1.0 mm.

[KQS light resistance test]
Reference dyed raised cloth 1 dyed and raised in dyeing condition 1 above, Reference dyed raised cloth 2 dyed and dyed in dyeing condition 2 and reference dyed raised cloth 3 dyed and raised in dyeing condition 3 Each standard dyed raised fabric was determined to have a discoloration of grade 4 or higher and a fading color of grade 3 or higher in the KQS light resistance test method.

The above-mentioned standard density machine having a wale density of 28 wales / 25.4 mm, a course density of 60 courses / 25.4 mm, and a basis weight of 205 g / m ² was manufactured by Nisaka Manufacturing Co., Ltd. CUT-MF-2L type liquid dyeing machine is used to dye a solid gray color, and after drying, raising treatment is performed to obtain a wale density of 40 wale / 25.4 mm, a course density of 61 course / 25.4 mm, a basis weight of 309 g / m ² , A plain dyed raised fabric for test emboss printing having a bulk density of 0.31 g / cm ³ and a thickness of 1.0 mm was finished.

(Dyeing condition 4: Gray color)
Dye: Kayalon-Polyester-Yellow-KWN ... 1.3% owf
Dye: Kayalon-Polyester-Red-KWN …… 0.6% owf
Dye: Kayalon-Polyester-Blue-KWN ... 2.0% owf
Dispersing leveling agent: Nikka Chemical Co., Ltd. Nikka Sun Salt RM-EXE ... 0.4cc / L
PH adjuster: Ultra MT-FH manufactured by Mitsima Chemical Co., Ltd. 0.4cc / L
Bath ratio: 8.3

[Ink for KQS transfer sheet]
Dye Kayalon-Polyester-Yellow-KWN (yellow dye), Kayalon-Polyester-Red-KWN (red dye), Kayalon-Polyester made by Nippon Kayaku Co., Ltd. used in the dyeing conditions 1, 2 and 3 -Using Blue-KWN (blue dye), the respective inks prepared according to the following prescription 1, prescription 2, and prescription 3 were stirred for 1 hour, and then applied to filter paper (product name: ADVANTEC-No. 5A) manufactured by Toyo Filter Paper Co., Ltd. The solution was filtered under reduced pressure and vacuum degassed.

(Formulation 1: Yellow ink)
Kayalon-Polyester-Yellow-KWN ... 10% by weight
Purified water ………………………………………………………………… 65% by weight
Polyoxyethylene monomethyl ether …… 25% by weight

(Prescription 2: Red ink)
Kayalon-Polyester-Red-KWN ... 10% by weight
Purified water ………………………………………………………………… 65% by weight
Polyoxyethylene monomethyl ether …… 25% by weight

(Prescription 3: Blue ink)
Kayalon-Polyester-Blue-KWN …… 10% by weight
Purified water ………………………………………………………………… 65% by weight
Polyoxyethylene monomethyl ether …… 25% by weight

[Preparation of KQS transfer sheet]
Yellow ink, Red ink, and Blue ink of the above formulas 1 to 3 on a general-purpose transfer paper (product name: IJ Supplementation Underpaper) manufactured by Padek Co., Ltd. having a basis weight of 45 g / m ² , a nozzle diameter of 50 μm, a driving voltage of 55 V, and a frequency The KQS transfer sheet shown in FIG. 2 was prepared by printing with an on-demand ink jet printing apparatus having a frequency of 3 kHz, resolution of 255 dpi, and a printing amount of 10 g / m ² in total.

[Examples 1 to 8]
Solid color for test emboss printing with a finished wale density of 40 wale / 25.4 mm, a course density of 61 course / 25.4 mm, a basis weight of 309 g / m ² , a bulk density of 0.31 g / cm ³ , and a thickness of 1.0 mm. The ink-printed surface of the KQS transfer sheet shown in FIG. 2 is superimposed on the raised pile surface of the dyed raised fabric, and the heating embossing roll convex line pressure, heating embossing roll heating temperature, and heating embossing roll transfer speed shown in [Table 1] And forming the irregularities on the surface of the heated embossing roll on the raised pile surface of the plain dyed raised fabric, and transferring the KQS light-resistant sublimation dye of the KQS transfer sheet to the embossed depressions 11 of the raised pile surface having the irregularities, As shown in [Table 1], the bulk density of the embossed concave portion 11 is 1.5 times or more the bulk density of the embossed convex portion 12, and the KQS light resistance test of the embossed concave portion 11 is performed. Was a prototype vehicle interior embossed printing cloth legal judgment discoloration quaternary or higher fading tertiary above Examples 1-8.

[Examples 9 to 12]
The embossed textile fabric for vehicle interior obtained in Example 2 was heated at 175 ° C. for 180 seconds to produce a prototype of the embossed textile fabric for vehicle interior of Example 9 shown in [Table 2]. The embossed printed fabric for vehicle interiors of Example 10 shown in [Table 2] was heated for 180 seconds at 175 ° C. for 180 seconds, and the embossed printed fabric for vehicle interiors obtained in Example 8 was heated to 175 ° C. The vehicle interior embossed printed fabric of Example 11 shown in [Table 2] was manufactured as a prototype, and the vehicle interior embossed printed fabric obtained in Example 5 was heated at 175 ° C. for 180 seconds [Table 2]. The embossed textile fabric for vehicle interior of Example 12 shown in 2] was made as a prototype.

  Comparative Examples 1 to 3 show the relationship between the linear pressure of the heated embossing roll, the heating temperature, the transfer speed, and the effect of the present invention, and the comparative example in which the linear pressure of the heated embossing roll in Example 3 was 2 kg / mm or less. 1 and Comparative Example 2 in which the heating temperature of the heated embossing roll in Example 3 was set to 180 ° C. or lower, and Comparative Example 3 in which the transfer speed of the heated embossing roll in Example 3 was set to 5 m / min or more [Table 3] As shown in the table, good results are not obtained.

[Comparative Examples 4 to 6]
In Comparative Examples 4 to 6 shown in [Table 3], the finished wale density is 40 wale / 25.4 mm, the course density is 61 course / 25.4 mm, the basis weight is 309 g / m ² , and the bulk density is 0.31 g / cm. ^3. The ink printing surface of a commercially available transfer sheet for apparel-related fabric is superimposed on the raised pile surface of a plain dyed raised fabric for test embossed printing with a thickness of 1.0 mm, and the heating temperature and the convex line defined by the present invention are superimposed. While passing through the heated embossing roll with pressure and transfer speed, the coloring of the transfer sheet was transferred to the raised pile surface along with the irregularities on the peripheral surface of the heated embossing roll. As shown in [Table 4], depending on the commercially available transfer sheet for apparel-related fabrics A good result was not obtained.

  The embossed textile fabric for vehicle interior according to the present invention can be used as a surface covering material or a wall covering material for furniture used indoors in sunny conditions.

11: Embossed concave portion 12: Embossed convex portion 13: Outline 14: Inscribed circle r: Radius of inscribed circle

Claims (4)

(A) A printing cloth printed with a sublimation dye, and a KQS light sublimation dye printed on a printing cloth having a discoloration grade 4 or higher and a color fading grade 3 or higher in the KQS light resistance test method. Applying to a sheet of paper to prepare a KQS transfer sheet;
(B) The KQS light-sublimation dye-imparted surface of the KQS transfer sheet to which the KQS light-sublimation dye is applied is coated with a thickness (t) of 0.3 to 4.0 mm and a bulk density of 0.5 g / cm ³ or less. Overlaid on the processed fabric, the heating temperature is 180 to 220 ° C., the convex line pressure is 2 kg / mm or more, and the heated embossing roll is passed through,
Forming the unevenness of the peripheral surface of the heated embossing roll on the work cloth, and transferring the KQS light-sublimation dye to the embossed recess (11) of the work cloth to be formed with the unevenness;
(C) Simultaneously with the concave and convex shape, the bulk density of the embossed concave portion (11) is 1.5 times or more the bulk density of the embossed convex portion (12). A method for producing an embossed textile for vehicle interior having a discoloration grade 4 or higher and a fading grade 3 or higher. (D) The processed fabric to which the KQS light-resistant sublimation dye has been transferred is heated at 160 to 180 ° C. for 30 seconds or more. A method for producing embossed textiles for vehicle interiors of the grade or better. (E) The transfer speed of the heated embossing roll is 5 m / min or less,
(F) The basis weight of the KQS transfer sheet paper is 20 to 150 g / m ² ,
(G) The KQS light-resistant sublimation dye is transferred only to the embossed recesses (11) of the fabric to be processed. A method for producing embossed textiles for vehicle interiors of the grade or better. (H) The area ratio of the area of the embossed concave portion (11) to the total surface area of the fabric to be processed is less than the area ratio of the area of the embossed convex portion (12) to the total surface area of the processed fabric,
(I) The KQS light resistance of the embossed recess according to any one of claims 1, 2 and 3, wherein a radius (r) of an inscribed circle (14) inscribed in the contour (13) of the embossed recess (11) is 10 mm or less. A method for producing an embossed textile fabric for vehicle interior having a test method judgment discoloration grade 4 or higher and fading grade 3 or higher.

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