JP2016098469A - Retroreflective yarn manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a retroreflective yarn to be definitely manufactured.SOLUTION: A polyester film layer 2 constituting a film 1 has a thickness of 25 μm. A core yarn 18 made of polyester has a thickness of 150 denier. In a cutting process, multiple blades 14 with a thickness corresponding to a cut width of a film fragment 1a are used. A blade tip 16 on outer peripheral surface of the blade 14 is formed into inverted V shape protruding in a radial direction. The film 1 is cut by the edge of the blade tip 16 in inverted V shape of the blade 14. In a yarn twisting process, the core yarn 18 is pulled up at a speed of approximately 3.7 m per minute, and rotation frequency of a rotor 22, which unwinds the film fragment 1a while rotating, is approximately 5,500 times per minute. Steam at 100°C is applied on a retroreflective yarn 19 for 30 minutes at each of three heated steam processes including first, second and third heated steam processes.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a reflex reflective yarn that is used as a material for embroidery, string, fabric, apparel products, etc., and that reflects directly from a light source and exhibits recognizability at night and in the dark. It is related with the manufacturing method.

  As this type of re-reflecting yarn, for example, Patent Document 1 shown below can be cited.

JP-A-10-295417

  Patent Document 1 describes a reflecting material (recurring reflective yarn) obtained by obliquely winding a reflex reflective film around a core material (see FIG. 15 of Patent Document 1).

  However, this Patent Document 1 only discloses the configuration of the re-reflecting yarn, and does not describe or suggest the manufacturing method.

The applicant is a company that manufactures and sells gold yarn and silver yarn, and the structure of the gold yarn and silver yarn itself is the same as that of the re-reflecting yarn. However, glass beads are used for the re-reflecting yarn, but glass beads are not used for the gold and silver yarns.
Therefore, the present inventor considered that the reflex reflection yarn could be manufactured if manufactured in the same manner as the gold thread or silver thread manufacturing method because the configurations of the gold thread or silver thread and the reflex reflection thread were the same. . And, it tried to manufacture the reflex reflection yarn by the same manufacturing method as the gold yarn, but unfortunately the reflex reflection yarn could not be manufactured.

  The present invention has been provided in view of the above-described problems, and provides a method for producing a re-reflecting yarn that is capable of reliably producing a re-reflecting yarn.

Therefore, in the method for producing a reflex reflecting yarn according to claim 1 of the present invention, a cutting step of thinly cutting the film 1 having a large number of glass beads 3 and having a thickness of about 75 to 80 μm,
A first winding step of winding the film piece 1a in which the film 1 is cut by the cutting step around the first bobbin 7,
The film piece 1a wound around the first bobbin 7 in the first winding step while being pulled up is unwound while being rotated by the rotating body 22 that is driven to rotate, A twisting step of winding the film piece 1a around the surface of the core yarn 18,
A second winding step in which the reflex reflecting yarn 19 formed by winding the film piece 1a around the surface of the core yarn 18 by the twisting step is wound around a second bobbin 27;
A first heating steam step of applying water vapor to the re-reflecting yarn 19 wound around the bobbin 27 by the second winding step;
After the first heating steam step, a second heating steam step of applying water vapor to the re-reflecting yarn 19;
A method for producing a re-reflecting yarn comprising a third heating steam step of applying water vapor to the re-reflecting yarn 19 after the second heating steam step,
The thickness of the polyester film layer 2 constituting the film 1 is 25 μm,
The core yarn 18 is made of polyester and has a thickness of 150 denier,
In the cutting step, a plurality of blades 14 having a thickness corresponding to the cut width of the film piece 1a are provided, and the blade edge portion 16 on the outer peripheral surface of the blade 14 is formed in an inverted V shape projecting in the radial direction. The film 1 is cut at the tip of the blade edge portion 16 of the blade 14;
In the twisting step, the pulling speed of the core yarn 18 is about 3.7 m / min, and the rotational speed of the rotating body 22 that is unwound while rotating the film piece 1a is about 5,500 times / min. And
In the first, second, and third heating steam steps, water vapor at 100 ° C. is applied to the recurring reflective yarn 19 for 30 minutes.

  In the method for producing a reflex reflecting yarn according to claim 2, in the second heating steam step, a frame 31 having an inner diameter of about 20 times the outer diameter of the bobbin around which the reflex reflecting yarn 19 is wound. The re-reflecting yarn 19 is rewound and water vapor is applied to the re-reflecting yarn 19.

  In the method of manufacturing a reflex reflecting yarn according to claim 3, the film 1 is spray-coated and adhered to a polyester film layer 2 having a thickness of about 25 μm and one surface of the polyester film layer 2 and has a particle size of 38. It is characterized by being composed of an infinite number of transparent glass beads 3 having a diameter of ˜45 μm and an aluminum deposition layer 4 in which aluminum is deposited on the surface of the glass beads 3.

According to the method for producing a reflex reflecting yarn according to claim 1 of the present invention, the thickness of the polyester film layer 2 constituting the film 1 is 25 μm, the core yarn 18 is made of polyester and has a thickness of 150 denier, In the cutting step, a plurality of blades 14 having a thickness corresponding to the cut width of the film piece 1a are provided, and the blade edge portion 16 on the outer peripheral surface of the blade 14 is formed in an inverted V shape projecting in the radial direction. The film 1 is cut at the tip of the blade edge portion 16 of the blade 14, and in the twisting process, the pulling speed of the core yarn 18 is about 3.7 m / min and the film piece 1 a is rotated. The rotational speed of the rotating body 22 that is unwound is about 5,500 times per minute. In the first, second, and third heating steam steps, 100 ° C. steam is supplied for 30 minutes to the re-reflecting yarn, respectively. 1 By being applied to the one in which it is possible to reliably produce a comeback reflective yarn 19. Further, the recurring reflection yarn 19 manufactured by the above-described process can be embroidered in the same manner as gold and silver yarn, and is a twisted yarn product that has never existed. The re-reflecting yarn 19 is used for materials such as embroidery, string-making, woven fabric, and apparel products.
By using the re-reflecting yarn 19 as a material, the recognizability at night and darkness can be enhanced by direct reflection from the light source, and safety can be ensured. In addition, by maintaining the function of the embroidery thread, it can be made a material of a highly fashionable product.

  According to the method for producing a reflex reflecting yarn according to claim 2, in the second heating steam step, a frame having an inner diameter of about 20 times the outer diameter of the bobbin around which the reflex reflecting yarn 19 is wound. The re-reflecting yarn 19 is wound around the re-reflecting yarn 19 and water vapor is applied to the re-reflecting yarn 19. Therefore, the re-reflecting yarn 19 is in a state where the straight-line portion is long. By applying water vapor to the surface, it is possible to prevent the recurrence reflection yarn 19 from being easily snare and to obtain the effect of two birds with one stone that the film piece 1a can be further adhered to the core yarn 18.

  According to the method for producing a recurring reflective yarn according to claim 3, the film 1 is spray-coated and adhered to a polyester film layer 2 having a thickness of about 25 μm and one surface of the polyester film layer 2 to obtain a particle size. Is composed of transparent and innumerable glass beads 3 having a thickness of 38 to 45 μm, and an aluminum vapor deposition layer 4 vapor-deposited on the surface of the glass beads 3. The glass film 3 is composed of the polyester film layer 2 and the aluminum vapor deposition layer 4. Since the glass beads 3 are not exposed on the surface of the film piece 1a, the function of the embroidery thread can be maintained and the thread is not damaged (re-reflected reflection thread 19). be able to.

(A)-(d) is explanatory drawing in the case of cutting the film piece in the case of manufacturing the gold thread as a reference example. (A) and (b) are the principal part front view and side view of the cutting device as a reference example. It is explanatory drawing in the case of manufacturing the gold thread as a reference example. It is explanatory drawing in the case of manufacturing the gold thread as a reference example. It is explanatory drawing in the case of steaming the gold thread as a reference example. It is a perspective view at the time of winding the gold thread as a reference example around a bobbin. It is a principal part enlarged view of the gold thread as a reference example. It is a principal part expanded sectional view of the film in embodiment of this invention. (A)-(d) is explanatory drawing which shows the process in the case of cutting into the film piece from the film in embodiment of this invention. It is a front view of the cutting device in an embodiment of the invention. (A) and (b) are the principal part front view and side view of a cutting device in an embodiment of the invention. It is explanatory drawing in the case of winding a film piece around the core yarn in embodiment of this invention, and manufacturing a reflex reflection yarn. It is a perspective view which shows the state which wound the recurrence reflection thread around the bobbin in the embodiment of the present invention. It is explanatory drawing in the case of injecting water vapor | steam in the boiler in the reflex reflection thread in embodiment of this invention. It is a perspective view of the wooden frame which winds up the recurrence reflection thread in embodiment of this invention. It is explanatory drawing in the case of winding a recurrence reflection thread from the bobbin to a wooden frame in embodiment of this invention. It is explanatory drawing at the time of winding the recurrence reflection thread in embodiment of this invention around the wooden frame. It is explanatory drawing in the case of injecting water vapor | steam in the boiler in the reflex reflection thread in embodiment of this invention. It is explanatory drawing in the case of winding up the recurrence reflection thread in embodiment of this invention from a wooden frame to a bobbin. It is explanatory drawing in the case of injecting water vapor | steam in the boiler in the reflex reflection thread in embodiment of this invention. It is explanatory drawing at the time of winding a recurrence reflection thread around the bobbin in the embodiment of the present invention. It is a principal part enlarged front view of the recurrence reflection thread in embodiment of this invention. It is a figure which shows the difference in the manufacturing conditions of the gold thread and the reflex reflection thread in embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, a method for producing a gold thread or a silver thread will be described as a reference example. As the core yarn (core material), rayon 100 denier, Tetoron (registered trademark) 100 denier, nylon 110 denier or the like is used depending on strength.
The film (foil) wound around the outer peripheral surface of the core yarn is obtained by coloring the upper or lower surface of a polyester film obtained by depositing aluminum or silver. The film thickness is 9 μm.

FIG. 1A shows a film 51 having a thickness of 9 μm wound in a roll. For example, the width is 610 mm and the length is 9,000 m, but the width and length can be appropriately changed. . The portion of the solid line 52 shown in FIG. 1A is cut with a cutter, and the width 610 mm is cut into 6 cuts.
FIG. 1B shows a 1-cut film 51 of 6 cut portions. As shown in FIG. 1C, this one-cut film 51 is cut into 75 equal widths by a cutting device. A film piece 51a is cut into 75 equal widths. The width of the film piece 51a is about 1.34 mm.

  The film piece 51a is wound around a plastic bobbin 53 as shown in FIG. The length of the film piece 51 a wound around the bobbin 53 is 9,000 m, which is the same as the length of the film 51.

Here, FIG. 2 shows a schematic configuration of a cutting apparatus that cuts the film 51 shown in FIG. 1C and cuts it into a film piece 51a. The cutting device 55 includes an upper intersecting blade portion 56 and a lower intersecting blade portion 57.
As shown in FIG. 2A, the upper intersecting blade portion 56 and the lower intersecting blade portion 57 have the same configuration, and the upper intersecting blade portion 56 has a large number of disk-like shapes with a predetermined interval from a rotationally driven shaft 58. The blade 59 is attached. The same applies to the lower intersecting blade portion 57, and a large number of blades 59 are mounted on a shaft 60 that is rotationally driven.

The lower part of the blade 59 of the upper intersecting blade part 56 and the upper part of the blade 59 of the lower intersecting blade part 57 are arranged so as to slightly bite in the vertical direction, and the interval between the respective blades 59 corresponds to the thickness of the blade 59. It corresponds. The number of the upper and lower blades 59 is made to correspond to the number of the film piece 51a shown in FIG. For easy understanding (for easy understanding), the outer shape of the blade 59 of the upper intersecting blade portion 56 is indicated by a thick solid line.
Further, as shown by the curved arrows corresponding to the blade 59 in FIG. 2B, the rotation directions of the upper and lower blades 59 are different, and the blade 59 of the upper intersecting blade portion 56 is counterclockwise, and the lower intersecting blade. The blade 59 of the part 57 is clockwise.

As shown in FIG. 2A, the peripheral surfaces 61 of the blades 59 of the upper intersecting blade portion 56 and the lower intersecting blade portion 57 have a flat shape, and the film 51 is cut on both sides of the peripheral surface 61. This cut portion is indicated by 62.
As shown in FIG. 2B, the film 51 is cut by the upper and lower blades 59 by putting the film 51 between the upper crossing blade portion 56 and the lower crossing blade portion 57 of the cutting device 55, and the film element is cut. Cut into pieces 51a.

  Next, the process of winding the film piece 51a around the core yarn will be described. As shown in FIG. 3, a flyer 64 is disposed on the upper surface side of the bobbin 53, and a substantially U-shaped rotating body 65 is provided below the flyer 64 so as to be rotatable. A hole 66 through which the film piece 51 a is passed is provided at both lower ends of the rotating body 65, and the film piece 51 a wound around the bobbin 53 is passed through the hole 66.

  The core thread 67 is inserted through the center hole of the bobbin 53 and the hole 68 of the fryer 64 and pulled up, and the tip of the core thread 67 is wound around the iron bobbin 71 via the two-stage rollers 69 and 70. The bobbin 71 is rotated by a motor (not shown). The rotary body 65 of the flyer 64 is also driven to rotate by a motor (not shown).

  The tip of the core yarn 67 is wound around the bobbin 71, and the tip of the film piece 51 a wound around the bobbin 53 is inserted through the hole 66 of the rotating body 65 and wound around the core yarn 67. Then, the bobbin 71 and the rotating body 65 are rotationally driven. The pulling speed of the core yarn 67 is about 10 m per minute, and the rotational speed of the rotating body 65 is about 12,000 times per minute.

  The rotary body 65 is rotated while pulling up the core thread 67. When the rotating body 65 rotates, the film piece 51a is unwound from the bobbin 53, and the film piece 51a is wound around the iron bobbin 71 as a gold thread 72 through rollers 69 and 70 while being wound around the core thread 67. Go. FIG. 4 shows a state in which the gold thread 72 is wound around the bobbin 71 in this way.

  Next, as shown in FIG. 5, the gold thread 72 wound on the iron bobbin 71 is put into the boiler 73, and steam at 110 ° C. is blown into the boiler 73. This is continued for 30 minutes. The reason why the bobbin 71 is made of iron is that steam at 100 ° C. is blown into the boiler 73, so that the bobbin 71 needs to have heat resistance. The reason why the water vapor is applied to the gold thread 72 is to stabilize the shape.

After 30 minutes, the gold thread 72 is taken out from the boiler 73, and the gold thread 72 wound around the iron bobbin 71 is rewound onto the plastic bobbin 74 as shown in FIG.
In this way, the gold thread 72 is manufactured, and FIG. 7 shows an enlarged view of the main part of the gold thread 72. As shown in the drawing, the gold thread 72 is wound around the surface of the core thread 67 with the film piece 51a being in close contact with each other at a predetermined interval.

  Next, the manufacturing method of the reflex reflection yarn of this invention is demonstrated. FIG. 8 shows an enlarged cross-sectional view of the main part of the film 1 used for the reflex reflection yarn. The film 1 is applied to the polyester film layer 2 having a thickness of about 25 μm and one surface of the polyester film layer 2 by spray coating. The glass beads 3 are transparent and innumerable with a particle diameter of 38 to 45 μm, and the aluminum vapor deposition layer 4 is formed by vapor-depositing aluminum on the surface of the glass beads 3. The refractive index of the glass beads 3 is 2.20.

And the thickness of this film 1 is about 75-80 micrometers since the particle size of the glass bead 3 is as large as 38-45 micrometers. In addition, this film 1 is generally marketed, and the film 1 from which the thickness of the polyester film layer 2 differs is marketed.
As described above, the film 1 used in the present invention has a thickness of about 75 to 80 μm, a width of 610 mm, and a length of 1,500 m. The width and length of the film 1 are not particularly limited.

  As the core yarn of the re-reflecting yarn, 150 denier polyester is used. The 150 denier core yarn is used because the film 1 has good compatibility with the thickness and hardness, and has strength and heat resistance. As for the thickness of the film 1, the above-described 75 to 80 μm film 1 which is about 6 times as large as 9 μm of the film 51 (film piece 51 a) in the case of manufacturing the gold thread 72 is used.

The method for producing the reflex reflecting yarn of the present invention is basically the same as that for producing the gold yarn 72, but the method for producing the gold yarn 72 can be greatly improved to produce the reflex reflecting yarn. is there. After describing the method for producing the re-reflecting yarn of the present invention, the improved part will be described.
The apparatus for manufacturing the gold thread 72 and the apparatus for manufacturing the reflex reflection thread are basically the same, but will be described with different numbers. However, the blades of the cutting device for cutting the film are completely different.

FIG. 9A shows the film 1 wound in a roll shape. As described above, the width and length are 610 mm and the length is 1,500 m, but the width and length are limited. Is not to be done. The part of the solid line 5 shown in FIG. 9A is cut with a cutter, and the width 610 mm is cut into 6 cuts.
FIG. 9B shows a 1-cut film 1 of 6 cut portions. The 1-cut film 1 is cut into 80 equal widths by a cutting device as shown in FIG. The piece cut into 80 equal widths is defined as a film piece 1a. In addition, the width | variety of this film piece 1a is about 1.27 mm.

  Then, the film piece 1a is wound around a plastic bobbin 7 as shown in FIG. 9 (d). The length of the film piece 1 a wound around the bobbin 7 is 1,500 m, which is the same as the length of the film 1.

Here, FIG. 10 shows a schematic configuration of a cutting apparatus 10 that cuts the film 1 shown in FIG. 9C and cuts it into a film piece 1a. The cutting device 10 includes an upper intersecting blade portion 11 and a lower intersecting blade portion 12.
As shown in FIGS. 10 and 11 (a), the upper crossing blade portion 11 and the lower crossing blade portion 12 have the same configuration, and the upper crossing blade portion 11 has a large number of predetermined intervals on a shaft 13 that is rotationally driven. The disc-shaped blade 14 is mounted. The same applies to the lower intersecting blade portion 12, and a large number of disk-shaped blades 14 are mounted on the shaft 15 that is rotationally driven at a predetermined interval.

  The blades 14 of the upper intersecting blade portion 11 and the lower intersecting blade portion 12 are formed in a disk shape as described above, and the cutting edge portion 16 on the peripheral surface of the blade 14 is a cross section protruding outward in the radial direction. Is formed in a substantially inverted V shape over the entire circumference. In addition, although it becomes a substantially inverted V shape in the upper part of the blade 14 in Fig.11 (a), it becomes a substantially V shape in the lower part of the blade 14, but it is hereafter called a substantially inverted V shape.

As shown in FIG.10 and FIG.11, the part of the blade edge | tip part 16 of the lower part of the blade 14 of the upper crossing blade part 11 and the part of the blade edge | tip part 16 of the upper part of the blade 14 of the lower crossing blade part 12 are respectively up-down direction. The blades 14 are arranged so as to be inserted slightly, and the interval between the blades 14 corresponds to the thickness of the blades 14. The number of the upper and lower blades 14 is made to correspond to the number of the film pieces 1a shown in FIG.
As shown by the curved arrows corresponding to the blades 14 in FIG. 11B, the rotation directions of the upper and lower blades 14 are different, the blades 14 of the upper intersecting blade portion 11 are counterclockwise, and the lower intersecting blade portion 12 is. The blade 14 is clockwise.
A separator 40 is interposed between the blades 14 to prevent the blades 14 from moving in the axial direction.

As shown in FIG. 11A, the blade tip 16 of the blade 14 of the upper intersecting blade portion 11 and the lower intersecting blade portion 12 has a substantially inverted V shape, and a film is formed at a sharp point at the tip of the blade edge portion 16. 1 is cut.
As shown in FIG. 11 (b), the film 1 is cut by the upper and lower blades 14 by putting the film 1 between the upper crossing blade portion 11 and the lower crossing blade portion 12 of the cutting device 10 so that the film element is cut. Cut into pieces 1a.

  Next, as shown in FIG. 12, the process of winding the film piece 1a around the core yarn 18 will be described. As shown in FIG. 12, as in the case of manufacturing the gold thread 72, the flyer 21 is arranged on the upper surface side of the bobbin 7, and a rotatable and substantially U-shaped rotating body 22 is provided below the flyer 21. ing. A hole 23 through which the film piece 1 a is passed is provided at both lower ends of the rotating body 22, and the film piece 1 a wound around the bobbin 7 is passed through the hole 23.

  A core thread 18 wound around a bobbin (not shown) is inserted through the center hole of the bobbin 7 and the hole 24 of the fryer 21 and pulled up, and the core bobbin 27 is cored through two stages of rollers 25 and 26. Wrap the tip of the thread 18. The bobbin 27 is rotationally driven by a motor (not shown). The rotating body 22 of the flyer 21 is also driven to rotate by a motor (not shown).

  The tip of the core yarn 18 is wound around the bobbin 27, and the tip of the film piece 1 a wound around the bobbin 7 is inserted through the hole 23 of the rotating body 22 and wound around the core yarn 18. Then, the bobbin 27 and the rotating body 22 are rotationally driven. Here, the pulling speed of the core yarn 18 is 223 m per hour (about 3.71 m per minute), and the rotating speed of the rotating body 22 is about 5,000 to 6,000 per minute (average of about 5,500 revolutions). ).

  The rotating body 22 is rotated while pulling up the core yarn 18. When the rotating body 22 rotates, the film piece 1 a is unwound from the bobbin 7, and the film piece 1 a is wound around the core bobbin 18 through the rollers 25 and 26, and wound around the iron bobbin 27 as the recurring reflection yarn 19. It will be turned. FIG. 13 shows a state where the recurring reflection yarn 19 is wound around the bobbin 27 in this way.

  Next, as shown in FIG. 14, the recurring reflective yarn 19 wound around the iron bobbin 27 is put into the boiler 30, and water vapor (water vapor) at 100 ° C. is blown into the boiler 30. This is done once for 30 minutes.

  FIG. 15 shows a perspective view of the frame 31 having an inner diameter of about 1 m, and the reflex reflecting yarn 19 wound around the bobbin 27 is wound around the frame 31 as shown in FIG. FIG. 17 shows a state in which the recurrence reflecting yarn 19 is wound around the frame 31. Next, as shown in FIG. 18, the recurrence reflecting yarn 19 wound up on the frame 31 is placed in a boiler 30, and the temperature of 100.degree. Steam is blown into the boiler 30. This is done once for 30 minutes.

  Next, as shown in FIG. 19, the reflex reflection yarn 19 wound around the frame 31 is wound around the bobbin 33, and as shown in FIG. 20, the reflex reflection yarn 19 wound up on the bobbin 33 in the boiler 30. And 100 ° C. water vapor is blown into the boiler 30. This is done once for 30 minutes.

  In this way, the process of putting the re-reflecting yarn 19 in the boiler 30 and blowing water vapor at 100 ° C. into the boiler 30 for 30 minutes is finally performed three times.

Next, after the step of blowing water vapor shown in FIG. 20 is completed, the reflex reflecting yarn 19 is wound around the bobbin 34 as shown in FIG.
FIG. 22 shows an enlarged view of a main part of the re-reflecting yarn 19 finally produced. The glass beads 3 are drawn large for easy understanding. As shown in the figure, the film piece 1a is wound around the surface of the core yarn 18 with the film piece 1a being in close contact with each other with a predetermined interval.

  Next, the part improved so that this inventor can manufacture the recurrence reflective yarn 19 by trial and error is demonstrated. The film 1 containing the glass beads 3 was first cut by a cutting device 55 shown in FIG. When the film piece 1a after the cut was viewed with a microscope, it was found that the glass beads 3 were not cut well at the glass beads 3, and the glass beads 3 were cracked.

  At first, I did not know why the glass beads 3 were broken, but when the film 1 was cut many times while the film 1 was cut many times, the film 1 was cut by the cut portion 62 of the blade 59. Therefore, it was thought that the glass beads 3 could not be cut well and the glass beads 3 were cracked. It is considered that this is because the glass beads 3 were damaged due to surface contact at both sides of the tip of the blade 59.

Therefore, the present inventor considered that when the film 1 is cut, if the contact portion of the blade 14 to be cut is made as thin as possible, the film 1 can be cut well, as shown in FIGS. The blade tip portion 16 having the tip of the blade 14 in an inverted V shape was considered.
By making the edge 16 of the blade 14 into an inverted V shape, the film 1 can be cut so that the glass beads 3 are hardly cracked.

  Next, although it is the thickness of the polyester film layer 2 of the film 1 shown in FIG. 8, although 25 micrometers is used in this invention, the thickness of this polyester film layer 2 used 16 micrometers initially. This is because the thinner the polyester film layer 2 is, the easier it is to embroidery using the re-reflecting yarn 19. Also, the thicker it is, the harder it is to embroider.

  However, when the thickness of the polyester film layer 2 of the film 1 is set to 16 μm, the film piece 1a is well adhered to the core yarn 18 in the step of winding the film piece 1a around the core yarn 18 to be in close contact, that is, the twisting step. In some cases, the re-reflecting yarn 19 can be produced, but there is a problem that the film piece 1a is cut many times during the process.

Furthermore, when embroidery was performed using a part of the reflex reflective yarn 19 that was successfully manufactured, there was a problem that the film piece 1a was cut during the embroidery process and the embroidery could not be performed.
If the polyester film layer 2 of the film 1 is thin (thickness: 16 μm), the film piece 1a is likely to be cut in the twisting process, so the rotational speed of the rotating body 22 (see FIG. 12) cannot be increased, and the gold thread 72 is manufactured. The speed should be slower than about 12,000 times per minute. In this case, the adhesion of the film piece 1a to the core yarn 18 is weakened, and the film piece 1a is displaced or cut with respect to the core yarn 18 with a little resistance.

  Further, since the film piece 1a is wound around the core yarn 18 at a slow speed, a portion where the film pieces 1a overlap each other is generated, the twisted re-reflecting yarn 19 becomes thick, the resistance of the cloth to be embroidered is large, and the embroidery is Can't be smooth.

Therefore, the present inventor thinks that the film piece 1a is often cut first because the thickness of the polyester film layer 2 of the film 1 (film piece 1a) is thin. Was changed from 16 μm to 25 μm.
It has been found that even when the thickness of the polyester film layer 2 is changed to 25 μm, the twisted finish of the film piece 1a (winding of the film piece 1a around the core yarn 18) is not good.

  That is, by changing the thickness of the polyester film layer 2 of the film 1 from 16 μm to 25 μm, the specific gravity of the polyester film layer 2 of the film piece 1a becomes heavy. Therefore, the centrifugal force at the portion where the film piece 1a is twisted becomes strong, the pulling speed of the core yarn 18 is set to 10 m / min, which is the same as that of the gold yarn 72, and the normal twisting rotational speed (about 12,000 times / min). When the work is performed, the film piece 1a spreads outward, the force wound around the core yarn 18 is reduced, and the film piece 1a is lifted and easily cut (wrapping the film piece 1a around the core yarn 18). The result was not good.

Therefore, the present inventor gradually decreases the rotational speed of the rotating body 22 when the film piece 1a is wound around the core yarn 18 from about 12,000 times per minute in the case of the gold yarn 72, and also the core yarn. An experiment was conducted in which the lifting speed of 18 was gradually reduced.
The film pieces 1a can be wound well around the core yarn 18, the degree of adhesion of the film pieces 1a to the core yarn 18 can be increased, and the distance between the film pieces 1a (see FIG. 22) can also be exquisitely balanced. An experimental result was obtained that the speed of the rotating body 22 was about 5,500 times per minute, and the pulling speed of the core yarn 18 was good about 3.7 m per minute.

  Thereby, the film piece 1a can be wound well around the core yarn 18 by setting the rotational speed of the rotating body 22 to about 5,500 times per minute and the pulling speed of the core yarn 18 to about 3.7 m per minute. In addition, the degree of adhesion of the film piece 1a to the core yarn 18 is increased, and the interval between the film pieces 1a (see FIG. 22) can also be exquisitely balanced.

As described above, the rotational speed of the rotating body 22 is about 5,500 times per minute. When the rotating speed of the rotating body 22 is higher than about 5,500 times per minute, the film piece 1a is turned into the core yarn 18. When the film piece 1a is wound around, the film piece 1a spreads outward, the force wound around the core yarn 18 is reduced, and the film piece 1a is easily lifted up.
Moreover, if the rotational speed of the rotary body 22 is made lower than about 5,500 times per minute, the finishing speed for winding the film piece 1a around the core yarn 18 becomes slow, resulting in a problem that work efficiency is lowered.

When the pulling speed of the core yarn 18 is also increased to about 3.7 m / min or more, the distance between the film pieces 1a is increased, and the portion where the light is reflected by the glass beads 3 is reduced with respect to the core yarn 18 to restart. The function as the reflective yarn 19 is deteriorated.
Further, when the pulling speed of the core yarn 18 is set to about 3.7 m / min or less, the interval between the film pieces 1a is shortened or the film pieces 1a are overlapped, and the re-reflected yarn 19 becomes thick and embroidered. Can not be smooth.

Therefore, it is preferable that the rotational speed of the rotating body 22 is about 5,500 times per minute and the pulling speed of the core yarn 18 is about 3.7 m per minute.
In addition, about these values, about ± 10% is an allowable range.

In FIG. 14, the step of putting the recurring reflection yarn 19 wound around the bobbin 27 into the boiler 30 and blowing 100 ° C. water vapor for 30 minutes applies the twisted recurring reflection yarn 19 to the water vapor to stabilize the shape. It is a process. That is, the film piece 1 a wound around the core yarn 18 is in close contact with the core yarn 18 so that the film piece 1 a cannot be unwound from the core yarn 18.
The reason why the temperature of the water vapor is about 100 ° C. is to prevent the recurring reflective yarn 19 from being melted because the recurring reflective yarn 19 is melted when water vapor higher than that is applied. Moreover, in the case of a low temperature of 100 ° C. or lower, the film piece 1a does not fully adhere to the core yarn 18 (does not adhere firmly), and the film piece 1a adheres to or adheres closely to the core yarn 18. This is to prevent “unevenness” from occurring.

  The reason for applying the water vapor to about 30 minutes is to prevent the re-reflecting yarn 19 from melting when a long time of 30 minutes or more is applied. This is because the film piece 1a is not firmly adhered to the core yarn 18 when the time for applying water vapor is a short time of 30 minutes or less, and this is to prevent it.

  15 to 18, the reflex reflection yarn 19 is rewound around the frame 31 having an inner diameter of about 1 m. In the case of the small bobbin 27 shown in FIG. Therefore, by rewinding the frame 31 that is much larger than the bobbin 27, the re-reflecting yarn 19 can be maintained in a straight line state, and the re-reflecting yarn 19 can be easily snare. This is to prevent this.

In FIG. 18, the reflex reflection yarn 19 wound around the frame body 31 is placed in the boiler 30 and 100 ° C. water vapor is applied to the reflex reflection yarn 19 for 30 minutes. This is to prevent the re-reflecting yarn 19 from being easily snare because it is as long as 1 m.
The malfunction in the case where the temperature of the water vapor is about 100 ° C. and is 100 ° C. or higher or 100 ° C. or lower is for the same reason as described in FIG. Moreover, the trouble in the case where water vapor is applied to the recurring reflective yarn 19 for 30 minutes or more and 30 minutes or less is due to the same reason as described in FIG.

  In FIG. 20, about 100 ° C. water vapor is applied for 30 minutes in the boiler 30 to the re-reflecting yarn 19 rewound from the frame body 31 to the small bobbin 33. The film piece 1 a is further applied to the core yarn 18. This is to increase the degree of adhesion. The reason why water vapor of about 100 ° C. is applied to the recurring reflective yarn 19 in this step for 30 minutes is from the reason described above.

  Here, in the case of manufacturing the reflex reflection yarn 19, the thickness of the film piece 1 a of the reflex reflection yarn 19 is larger than that of the film piece 51 a in the case of manufacturing the gold yarn 72. Since the particle size of No. 3 is as large as 38 to 45 μm, the film piece 1a itself is thick. Further, since a large number of glass beads 3 are bonded to the film piece 1a, it becomes heavier than the case of the gold thread 72. Therefore, the film element is not applied to the core thread 18 by a single step of applying water vapor as shown in FIG. The piece 1a is not securely adhered.

Therefore, in order to prevent the re-reflecting yarn 19 from being easily snarled, the re-reflecting yarn 19 is rewound around the frame 31 having an inner diameter of about 1 m, and the re-reflecting yarn 19 is in a state where the linear portion is long. This prevents the re-reflecting yarn 19 from being easily snarled, and has the effect of two birds with one stone that the film piece 1a can be further adhered to the core yarn 18.
The outer diameter of the bobbin other than the frame body 31 around which the recurring reflection yarn 19 is wound is generally about 4 to 5 cm. If the size of the bobbin and the frame body 31 is compared, about 20 The frame 31 is large. Therefore, when the reflex reflection yarn 19 is wound around the frame 31, the portion where the reflex reflection yarn 19 is in a straight state becomes long, and it is possible to prevent the snare from becoming easy.
Further, when the heating steam process is performed using an ordinary bobbin without using the frame 31 having a large inner diameter, the reflex reflection yarn 19 can be reliably manufactured although it becomes easy to snare.

  Further, the reason why the re-reflecting yarn 19 is rewound from the frame body 31 to the smaller bobbin 33 and the water vapor is further applied is to ensure that the film piece 1 a is in close contact with the core yarn 18.

  Note that the reason why the bobbin 33 is rewound from the bobbin 33 to the bobbin 34 shown in FIG. 21 is to prevent the re-reflecting yarn 19 from being disturbed by the snare. Further, the bobbin 33 is wound with a 5,000-m recurrence reflecting yarn 19, which is manufactured and is rewound to a length of 500 m for retail use.

  As described above, the process of applying water vapor to the recurring reflective yarn 19 is set to three times. As a result of the inventors' experiments through trial and error, the film piece 1a is obtained through the above three processes. This is because it was possible to securely adhere to the core yarn 18. From the experimental result that the film piece 1a is in close contact with the core yarn 18 to some extent in the process of applying water vapor to the re-reflecting yarn 19 twice, but there is unevenness in the degree of close contact and the contact is not reliably made. It is.

  Further, even if water vapor is applied to the re-reflecting yarn 19 four times or more, the film piece 1a is securely adhered to the core yarn 18 in three steps, so that the water vapor is applied to the re-reflecting yarn 19 four times or more. However, the degree of adhesion is hardly improved, the production efficiency is deteriorated, and the economic effect is poor.

In addition, the process of applying water vapor to the recurring reflective yarn 19 is three times, and after applying the first or second water vapor and then entering the next water vapor, the temperature of the recurring reflective yarn 19 to which the water vapor is applied is After the temperature is lowered to room temperature, the next step of applying water vapor is entered.
The reason why the temperature of the re-reflecting yarn 19 is lowered to room temperature is as follows. That is, immediately after the process of applying the next water vapor immediately after the temperature of the re-reflecting yarn 19 is high, the time for applying the water vapor is merely increased, and it is not necessary to apply water vapor for more than 30 minutes. is there.

The core yarn 18 is made of polyester and has a thickness of 150 denier because of heat resistance and strength. If the thickness of the core yarn 18 is 100 denier as in the case of the gold yarn 72, This is because there is a possibility that the core yarn 18 may be broken in the process of twisting the film piece 1a on the core yarn 18.
In addition, if the core yarn 18 is thicker than 150 denier, the strength itself is improved, but the finished re-reflecting yarn 19 itself becomes too thick and is not suitable for embroidery. is there. Therefore, it is a preferable example that the thickness of the core yarn 18 is set to 150 deniers based on the experimental result of manufacturing the reflex reflecting yarn 19.

  FIG. 23 shows the difference in conditions when the gold yarn 72 and the recurring reflection yarn 19 are manufactured.

As described above, the re-reflecting yarn 19 can be reliably manufactured by the manufacturing method of the present invention. Further, the recurring reflection yarn 19 manufactured by the above-described process can be embroidered in the same manner as gold and silver yarn, and is a twisted yarn product that has never existed. The re-reflecting yarn 19 is used for materials such as embroidery, string-making, woven fabric, and apparel products.
By using the re-reflecting yarn 19 as a material, the recognizability at night and darkness can be enhanced by direct reflection from the light source, and safety can be ensured. In addition, by maintaining the function of the embroidery thread, it can be made a material of a highly fashionable product.

  Further, as shown in FIG. 8, the film piece 1a (film 1) has the glass beads 3 enclosed in the polyester film layer 2 and the aluminum vapor deposition layer 4, and the glass beads 3 are placed on the surface of the film piece 1a. Since the thread is not exposed, the function of the embroidery thread can be maintained, and a thread that does not scratch other parts (re-reflecting thread 19) can be obtained.

  In each heating steam step, when a plastic bobbin is used, a heat-resistant bobbin is used. The frame 31 is also made of heat-resistant material, and may be made of plastic or wooden as long as it has heat resistance.

DESCRIPTION OF SYMBOLS 1 Film 2 Polyester film layer 3 Glass bead 4 Aluminum vapor deposition layer 7 Bobbin 14 Blade 16 Blade edge part 18 Core thread 19 Re-reflecting thread 22 Rotating body 31 Frame

Claims (3)

A cutting step of thinly cutting the film (1) having a large number of glass beads (3) and having a thickness of about 75 to 80 μm;
A first winding step of winding the film piece (1a) from which the film (1) has been cut by the cutting step around the first bobbin (7);
While pulling up the core yarn (18), the film piece (1a) wound around the first bobbin (7) in the first winding step is rotated by the rotating body (22) being driven to rotate. A twisting process in which the film piece (1a) is wound around the surface of the core yarn (18),
A second winding in which the reflex reflecting yarn (19) formed by winding the film piece (1a) around the surface of the core yarn (18) by the twisting step is wound around the second bobbin (27). Process,
A first heating steam step of applying water vapor to the recurring reflective yarn (19) wound around the bobbin (27) by the second winding step;
After the first heating steam step, a second heating steam step of further applying water vapor to the recurrence reflecting yarn (19),
After the second heating steam step, further comprising a third heating steam step of applying water vapor to the recurrence reflecting yarn (19),
The thickness of the polyester film layer (2) constituting the film (1) is 25 μm,
The core yarn (18) is made of polyester and has a thickness of 150 denier,
In the cutting step, a plurality of blades (14) having a thickness corresponding to the cut width of the film piece (1a) is provided, and the blade edge portion (16) on the outer peripheral surface of the blade (14) projects in the radial direction. The film (1) is cut at the tip of the blade tip (16) of the blade (14),
In the twisting process, the pulling speed of the core yarn (18) is about 3.7 m / min, and the rotational speed of the rotating body (22) that is unwound while the film piece (1a) is rotating is adjusted per minute. About 5,500 times,
In the first, second, and third heating steam steps, 100 ° C. water vapor is applied to the re-reflecting yarn (19) for 30 minutes, respectively.   In the second heating steam step, the recurrence reflecting yarn (19) is wound around a frame (31) having an inner diameter of about 20 times the outer diameter of the bobbin around which the recurrence reflecting yarn (19) is wound. The method for producing a reflex reflection yarn according to claim 1, wherein the reflex reflection yarn (19) is turned again and water vapor is applied to the reflex reflection yarn (19).   The film (1) has a polyester film layer (2) having a thickness of about 25 μm and is adhered to one surface of the polyester film layer (2) by spraying and bonding, and a transparent and countless glass having a particle size of 38 to 45 μm. The re-reflecting yarn according to claim 1 or 2, comprising a bead (3) and an aluminum vapor-deposited layer (4) vapor-deposited on the surface of the glass bead (3). Production method.

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