JP2017111007A - Measuring method of glossiness of filament aggregate, selection method of filament wound body having low uneven brightness, and method of manufacturing cloth having low uneven brightness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select a filament wound body having the same glossiness as those of a largest number of filament wound bodies by a method of measuring a glossiness of a filament aggregate, and to provide an acetate cloth having a low uneven brightness by using a filament yarn of the wound body.SOLUTION: A filament wound body 12 having a low uneven brightness is selected by a method of radiating light from an irradiation unit 3 to a filament aggregate surface on which filaments are tightly arranged, receiving the diffused and reflected light from the aggregate surface with two light receiving units 4 having different reflection angles, and converting the light received by the light receiving units into voltage and determining it as the glossiness. Acetate cloth having a low uneven brightness is provided by using, as warp, the wound body filament yarn of the filament wound body 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for measuring the glossiness of a filament aggregate, a method for selecting a filament wound body with less glossy spots, and a method for producing a fabric with less glossy spots.

Acetate filaments are excellent in glossiness, color development, water-absorbing quick-drying, luxury and smooth touch, and are used for lining and outerwear.
The gloss characteristic of the acetate filament is due to the cross-section of the chrysanthemum fiber, and since the refractive index of light is low, there is little reflected light from the filament surface, and an elegant gloss like silk and clear color development are obtained. The technique for measuring the gloss is described in Patent Document 1, and the gloss is expressed by the glossiness. The acetate filament does not have a certain glossiness due to the cross-section of the chrysanthemum fiber, and the glossiness varies. Therefore, dyed spots are also found on the dyed fabric.

  As a woven fabric made of acetate filaments, for example, Patent Document 2 proposes a double woven fabric including an acetate composite false twisted yarn. However, since the acetate composite false twisted yarn has a wide range of glossiness, gloss spots are also observed on the fabric.

JP-T-4-503247 JP 2004-332164 A

  An object of the present invention is to provide a method for measuring the glossiness of a filament assembly, in particular, an acetate filament spool, to provide a method for selecting a filament spool with few gloss spots by the gloss measurement method, It is to obtain a woven fabric with less glossy spots by using filaments from a filament wound body with less gloss.

The gist of the present invention is as follows.
1. Irradiation light from the irradiation unit is irradiated onto the filament assembly surface, and the reflected light on the filament assembly surface is received by two light receiving units having different reflection angles, and the light received by each light receiving unit is converted into a voltage corresponding to the amount of light. And a method for measuring the glossiness of a filament assembly, wherein the average value of voltages at two locations is obtained as the glossiness, and the wavelength of the irradiation light is 500 to 550 μm, and the two light receiving portions are in the irradiation direction of the irradiation light. On the other hand, a method for measuring the glossiness of a filament aggregate, which is arranged in directions of 5 to 20 degrees and 20 to 35 degrees, respectively, and a difference between two reflection angles is 10 to 20 degrees.
2. 2. The method for measuring the glossiness of a filament aggregate as described in 1 above, wherein the incident angle of the irradiation light is 30 to 60 degrees.
3. 3. The method for measuring the glossiness of a filament assembly as described in 1 or 2 above, wherein a photodiode is used for the light receiving part.
4). 4. The method for measuring the glossiness of a filament aggregate according to any one of 1 to 3, wherein the filament is an acetate filament.

5). At the intersection where the irradiated light hits the filament assembly surface, a voltage corresponding to the amount of reflected light received from a 360 degree direction is measured at a constant angle of 1 to 10 degrees, and the average value thereof is the glossiness. A method for measuring the glossiness of a filament assembly according to any one of the above.
6). The irradiation part has a cylindrical body having a diameter of 10 to 25 mm and a length of 30 to 60 mm, and the light receiving part has a diameter of 10 to 25 mm, a length of 15 to 60 mm, and the inside is a black matte optical coating 6. The method for measuring the glossiness of a filament aggregate according to any one of 1 to 5 above, which has a cylindrical body to which is applied.
7). 7. The method for measuring the glossiness of a filament aggregate according to any one of 1 to 6, wherein the filament aggregate is a filament wound body.

8). 8. A method for selecting a filament wound body, wherein a filament wound body having a glossiness determined to be less than or equal to 0.001 is selected from a plurality of filament wound bodies whose glossiness has been measured by the measurement method according to 7. .
9. 9. A method for producing a woven fabric using an acetate filament of an acetate filament bobbin having a glossiness according to the above-mentioned sorting method for warp.

  According to the present invention, by measuring the glossiness of a filament assembly by a method that enhances the correlation with visual judgment, in the case of a plurality of assemblies, particularly a bobbin, the surface or inner layer of one bobbin Because of the small gloss spots and the larger gloss spots between the bobbin and the other bobbin, it is possible to select a bobbin with a small difference in glossiness from a number of bobbines. By using the filament, it is possible to obtain a woven fabric with reduced gloss spots and stained spots.

It is the schematic of the measuring apparatus of the glossiness of Pann which is the acetate filament wound body of this invention used in the Example. It is the glossiness distribution map of Pann measured in the Example.

  The glossiness measuring method of the present invention irradiates the light beam from the irradiation unit onto the surface of the filament assembly, receives reflected light diffused on the surface of the filament assembly at two light receiving units, and receives the reflected light at each light receiving unit. In this method, light is converted into a voltage corresponding to the amount of light, and the average value of the two voltages is used as the glossiness. Further, in the measurement method, the irradiation light is light having a wavelength of 500 to 550 μm, and the two light receiving portions are in the directions of the reflection angles of 5 to 20 degrees and 20 to 35 degrees with respect to the irradiation direction of the irradiation light. And the glossiness of the filament aggregate is measured by arranging so that the difference between the two reflection angles is 10 to 20 degrees.

  In the glossiness measuring method of the present invention, since there are two light receiving portions, it is easy to correlate the difference in glossiness with visual observation. The two light receiving portions are arranged in the direction of the reflection angle of 10 to 18 degrees and 25 to 35 degrees with respect to the irradiation direction of the irradiation light, and the difference between the two reflection angles is 13 to 17 degrees. It is preferable to arrange them in view of the correlation between the differences in visual glossiness.

  In the glossiness measuring method of the present invention, the incident angle of the irradiation light is preferably 30 to 60 degrees. When the incident angle is within this range, the difference in glossiness is easily correlated with visual observation, and the incident angle is more preferably 40 to 50 degrees.

Moreover, it is preferable to use a photodiode as a photoelectric element in the light receiving portion. By using a photodiode, the amount of received reflected light can be converted into a voltage.

  In the method for measuring glossiness according to the present invention, the filament having a cross section of a polygonal shape such as a polygonal cross section or a multi-leaf has a unique gloss without having a constant light reflecting surface. Since the gloss effect of the cross section of the atypical fiber is later evaluated as a woven fabric, a knitted fabric, etc., the gloss is measured not as individual filaments but as a filament aggregate in which filaments are closely arranged.

  In the present invention, examples of the filament to be measured include filaments having a cross section of atypical fibers such as polyester and nylon, and filaments such as rayon and acetate. Among them, an acetate filament having a chrysanthemum cross section is a preferable measurement target. Further, as the filament aggregate in which the filaments are closely arranged, the filament may be a monofilament, but is preferably a filament wound body wound around a bobbin as a multifilament.

  Examples of filament wound bodies include pirn, cheese, corn, etc. Depending on the type, form, and application of the filament, for example, pirn on which raw yarn (raw yarn) is mainly wound, cheese on which processed yarn is wound, and yarn splitting The shape of the winding around the bobbin, such as a cone, is different, but when measuring the gloss before the filament is processed such as false twisting, the filament wound body is a bobbin in which the original yarn is wound around the bobbin. If the body, particularly the filament, is an unprocessed acetate multifilament, the bobbin is preferably panned.

  In the glossiness measuring method of the present invention, the light emitted from the irradiation unit is light having a wavelength of 500 to 550 μm, and an LED (light emitting diode) is used as the light source. In addition, a photodiode is used for the light receiving unit. By using the photodiode, the light receiving sensitivity of light having a wavelength of 500 to 550 μm becomes high, and the measurement accuracy is improved.

The method for measuring the glossiness when the filament assembly is a filament wound body is based on the amount of reflected light received from the 360 degree direction at a constant angle of 1 to 10 degrees at the intersection where the irradiated light hits the filament wound body surface. In other words, the average value of the measured voltage is used as the glossiness. More specifically, the incident angle and the reflection angle of the irradiation light to the filament wound body are kept constant, and the constant angle of 1 to 10 degrees is 360 degrees. The rotating part having the irradiation part and the two light receiving parts arranged around the intersection is rotated and moved, and the light reflected from the pincushion surface is irradiated with light from the irradiation part at the rotational position of each angle. And 5 to 20 degrees, preferably 10 to 18 degrees, and 20 to 35 degrees, preferably 25 to 32 degrees with respect to the irradiation direction of the irradiation light to the bobbin surface. In addition, light is received by two light receiving sections arranged so that the difference between the two reflection angles is 10 to 20 degrees, preferably 13 to 17 degrees, and the reflected light received by the light receiving sections at each position is converted into a voltage. In this method, the average value of the voltage is used as the glossiness, and the average glossiness value measured from the 360 ° direction is used as the glossiness of the filament wound body.
In this measurement method, each voltage is measured, and the average value of the finally measured voltage may be used as the glossiness. In addition, this measurement method is a method that can measure the glossiness as an average value without being affected by the filament arrangement direction, and has a high correlation with the visual judgment from all directions, and the filament bobbin, particularly acetate A filament wound body is preferable as a measurement target.

  The angle at which the rotating unit provided with the irradiation unit and the two light receiving units is rotated at a constant angle is selected from 1 to 10 degrees. However, the smaller the angle, the higher the measurement accuracy and the correlation with the visual determination, and therefore preferably 5 degrees. The following is preferable and 3 degrees or less is more preferable.

  In the present invention, the irradiation part at the time of measuring the glossiness has a cylindrical body having a diameter of 10 to 25 mm and a length of 30 to 60 mm, and the light receiving part has a diameter of 10 to 25 mm and a length of It is preferable to have a cylindrical body to which an optical matting paint having a black inner surface of 15 to 60 mm is applied. It is preferable to have such a cylindrical body because it emits necessary light and easily receives light. More preferably, the cylindrical body of the irradiation unit has a diameter of 12 to 20 mm and a length of 40 to 50 mm, and the cylindrical body of the light receiving unit has a diameter of 10 to 25 mm and a length of 15 to 60 mm. It is a cylindrical body.

  Further, in the present invention, by selecting a filament wound body having a glossiness determined to have a glossiness difference of 0.001 or less from a plurality of filament wound bodies whose glossiness has been measured by the measurement method described above. In order to obtain a woven fabric with less glossy spots, a preferred filament bobbin is selected.

  A filament from a filament wound body of glossiness selected according to such a selection method is generally used as a warp where gloss spots are conspicuous, and a woven fabric with less gloss spots can be produced by weaving into an arbitrary structure. it can. In particular, an acetate woven fabric with less gloss unevenness can be obtained by weaving acetate filaments from an acetate filament wound body having a gloss difference of 0.001 or less.

  Hereinafter, the present invention will be specifically described with reference to FIG.

(Glossiness measuring device)
The irradiation unit 3 uses a high-intensity LED (NSPG500S manufactured by Nichia Corporation) as a light source,
A stainless steel cylinder having a length of 48 mm and a diameter of 15 mm is attached in the irradiation direction.
The light receiving unit 4 uses a high-sensitivity photodiode (S2386-8K, manufactured by Hamamatsu Photonics) and attaches a paper cylinder having a length of 30 mm and a diameter of 15 mm. An optical black matte paint (SCOPE LIFE manufactured by Yuma Seisakusho Co., Ltd.) was applied to the inside of the paper cylinder.

  The irradiation unit 3 is arranged in a direction where the incident angle 5 is 45 degrees, the light receiving unit 4 is arranged in two places, and the reflection angles 7 and 6 with respect to the irradiation direction of the irradiation light are arranged in directions of 15 degrees and 30 degrees, respectively. The irradiation unit 3 and the two light receiving units 4 are arranged in the rotating unit 2. The rotating unit 2 can rotate while maintaining the incident angle 5 and the reflection angles 7 and 6 constant with the axis 11 perpendicular to the tangent plane 9 at the intersection 10 where the irradiation light hits the surface of the filament bobbin 12 as the rotation axis. ing. The rotating unit 2 in which the irradiation unit 3 and the two light receiving units 4 are arranged is mounted inside the outer frame 1 to form a measuring device.

(Measuring method)
A pan 12 which is an acetate multifilament bobbin is placed on the upper surface of the tangent plane 9 of the measuring device with its measurement surface down, and only the rotating part 2 is centered on the axis 11 perpendicular to the tangential plane 9 at the intersection 10. The surface of Pann 12 was irradiated with light having a wavelength of 500 to 550 μm from the irradiation unit 3 while rotating the light, and the amount of diffusely reflected light received by each light receiving unit 4 was converted into a voltage. At this time, every time the rotating unit 2 rotates once, the voltages at the two light receiving units 4 are measured, rotated 360 degrees, and each voltage is measured. The value obtained by rounding off the value to the decimal point 4 was defined as the gloss of Pann 12. Similarly, the glossiness of other pans was also measured, the glossiness of a total of 1879 pans was measured, and a glossiness distribution with a glossiness difference of 0.001 was determined and is shown in FIG.

(Sorting)
After measurement, 632 pieces of 632 with a gloss distribution of 0.020, which is the glossiness with the largest number of panes, were selected, and a beam for using acetate multifilament for the warp of the woven fabric was warped from these panes. . At this time, it was confirmed that the selected pannes were also less glossy even in visual judgment. In addition, 585 PANs having the next highest number of PANs and a glossiness of 0.019 could be used as PANs with less glossy spots unless they were mixed with other shines.

(staining)
A plain weave fabric was woven using acetate multifilaments warped on the beam as the warp and the same acetate multifilament as the warp. The resulting fabric was dyed brown with disperse dye. As a result of visual evaluation of the presence or absence of the meridians by five evaluators, the obtained dyed fabric is clearly more meridian than the dyed fabric composed of acetate multifilaments from randomly selected Paan. It was confirmed that there were few.

  The present invention selects an acetate filament wound body with less glossy spots by a method for measuring the glossiness of a filament assembly, in particular, an acetate filament wound body, and further uses a filament yarn from an acetate filament wound body with less glossy spots. An acetate woven fabric with less gloss spots can be obtained, and is useful as a material for clothing, such as women's clothing and sports, which is particularly apparent when gloss spots are stained.

DESCRIPTION OF SYMBOLS 1 Outer frame 2 Rotating part 3 Irradiating part 4 Light receiving part 5 Incident angle (45 degrees)
6 Reflection angle (30 degrees to the irradiation direction)
7 Reflection angle (15 degrees to the irradiation direction)
8 Reflection angle difference (15 degrees)
9 Tangent plane 10 Intersection point 11 Axis perpendicular to the tangent plane at the intersection point 12 Pan (acetate multifilament bobbin)

Claims (9)

  Irradiation light from the irradiation unit is irradiated onto the filament assembly surface, the reflected light on the filament assembly surface is received by two light receiving units having different reflection angles, and the light received by each light receiving unit is converted into a voltage corresponding to the light amount. And a method for measuring the glossiness of a filament assembly, wherein the average value of voltages at two locations is obtained as the glossiness, and the wavelength of the irradiation light is 500 to 550 μm, and the two light receiving portions are in the irradiation direction of the irradiation light. On the other hand, a method for measuring the glossiness of a filament aggregate, which is arranged in directions of 5 to 20 degrees and 20 to 35 degrees, respectively, and a difference between two reflection angles is 10 to 20 degrees.   2. The method for measuring the glossiness of a filament aggregate according to claim 1, wherein an incident angle of the irradiation light is 30 to 60 degrees.   The method for measuring the glossiness of a filament assembly according to claim 1 or 2, wherein a photodiode is used for the light receiving portion.   The method for measuring the glossiness of a filament aggregate according to any one of claims 1 to 3, wherein the filament is an acetate filament.   The voltage according to the light quantity of the reflected light each received from the 360 degree direction by the fixed angle of 1 to 10 degree | times is measured at the intersection which irradiated light hits a filament assembly surface, and the average value is made into glossiness. The measuring method of the glossiness of the filament aggregate as described in any one of these.   The irradiation part has a cylindrical body having a diameter of 10 to 25 mm and a length of 30 to 60 mm, and the light receiving part has a diameter of 10 to 25 mm, a length of 15 to 60 mm, and the inside is a black matte optical coating The measuring method of the glossiness of the filament aggregate as described in any one of Claims 1-5 which has the cylindrical body to which sapphire was apply | coated.   The method for measuring the glossiness of a filament assembly according to any one of claims 1 to 6, wherein the filament assembly is a filament wound body.   A method for selecting a filament wound body for selecting a filament wound body having a glossiness determined to be less than or equal to 0.001 from a plurality of filament wound bodies whose glossiness is measured by the measuring method according to claim 7 .   The manufacturing method of the textile fabric which uses the acetate filament of the acetate filament bobbin of the glossiness based on the selection method of Claim 8 for a warp.