Dyeing method of zipper tape and drying device of zipper tape

Abstract

The invention provides a method for dyeing a fastener tape, which can suppress color transfer of a core part and can homogenize and stabilize color reproducibility. A method for dyeing a fastener tape according to the present invention comprises: a dyeing step for dyeing one surface (1a) of a fastener tape (1); a chemical solution application step for applying a chemical solution to the core part (2) on one surface (1a) of the fastener tape (1); a partial drying step for drying only the core part (2) on one surface (1a) of the fastener tape (1); and an overall drying step for drying the entire one surface (1a) of the fastener tape. In the present invention, the dyeing step, the chemical solution application step, the local drying step, and the overall drying step can be performed in sequence.

Description

Technical Field

[0001] The present invention relates to a fastener tape dyeing method and a fastener tape drying device, and more particularly, to a fastener tape dyeing method including the steps of applying a chemical liquid to a core portion of the fastener tape and drying the core portion, and a fastener tape drying device for partially drying the core portion coated with the chemical liquid. Background Art

[0002] International Publication No. 2017 / 212635 (Patent Document 1) discloses a method for continuously dyeing a zipper tape for a zipper by an inkjet printer. In Patent Document 1, the zipper tape is dyed, developed, dried, etc. while being conveyed from upstream to downstream by a conveying mechanism. The zipper tape has a core portion at one edge portion in the width direction where the chain element is installed. In the zipper tape, the core portion is thicker than the tape portion other than the core portion.

[0003] In the conventional dyeing method such as Patent Document 1, when the conveying roller of the conveying mechanism conveys the fastener tape whose surface or back side has been dyed downstream, the conveying roller presses the thickest core part of the fastener tape more strongly than other tape parts. Therefore, there is a case where the ink of the core part is transferred to the conveying roller, causing the ink on the conveying roller to adhere to the core part of the fastener tape of the next batch.

[0004] Figure 8 is a schematic diagram to illustrate this problem. Figure 8 In the process, the front and back surfaces of the current batch of zipper tapes 1A have been dyed and are transported downstream by the transport rollers 30. At this time, the ink of the core 2A of the current batch of zipper tapes 1A is transferred to the transport rollers 30. Moreover, the ink on the transport rollers 30 adheres to the core 2B of the next batch of zipper tapes 1B, the front and back surfaces of which have not been dyed. Such a core color (ink) transfer is particularly noticeable when the ink color of the current batch is darker (for example, red) and the ink color of the next batch is lighter (for example, yellow), thereby making the next batch of zipper tapes 1B defective.

[0005] Alternatively, it may be considered that the core 2A of the current batch of fastener tapes 1A is coated with a chemical solution to suppress the color transfer to the core 2B of the next batch of fastener tapes 1B. However, in this case, in the drying process after the fastener tapes 1A are dyed, a difference in color reproducibility occurs between the core 2A and the tape portion other than the core 2A, and the fastener tapes 1A become defective.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: International Publication No. 2017 / 212635 Summary of the invention

[0009] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a fastener tape dyeing method and a fastener tape drying device that can suppress the color transfer of the core portion and make the color reproducibility uniform and stable.

[0010] In order to solve the above-mentioned problem, according to one aspect of the present invention, there is provided a method for dyeing a zipper tape, characterized in that it includes: a dyeing step of dyeing one side of the zipper tape; a liquid coating step of coating a core portion on one side of the zipper tape with a liquid; a local drying step of drying only the core portion on one side of the zipper tape; and an overall drying step of drying the entire one side of the zipper tape.

[0011] In the present invention, the dyeing process can be performed using, for example, an inkjet printer, etc., but is not limited thereto. In the chemical liquid coating process, in order to prevent color transfer from the core to the conveying roller, etc., for example, a film forming agent that forms a film on the core, a penetrating liquid that helps the ink penetrate into the core that is thicker than other belt parts, etc. can be cited, but is not limited thereto.

[0012] In the method for dyeing a zipper tape according to the present invention, by applying a film-forming agent as an example of a chemical liquid to the core portion of one side of the zipper tape in the chemical liquid coating step, it is possible to suppress the color from being transferred to the core portion of the next batch of zipper tapes via a conveyor roller. In addition, by drying only the core portion in the partial drying step, the color reproducibility of the core portion and the tape portion other than the core portion can be made uniform and stable after the overall drying step.

[0013] In one embodiment of the present invention, the dyeing process, the liquid medicine coating process, the local drying process, and the overall drying process are performed in sequence. In another embodiment of the present invention, the local drying process is performed after the overall drying process. In yet another embodiment of the present invention, the dyeing process is performed after the liquid medicine coating process. In the present invention, the dyeing process, the liquid medicine coating process, the local drying process, and the overall drying process can be performed in sequence, but they can also be performed in a non-sequential order. In the latter case, for example, the dyeing process can be performed after the liquid medicine coating process, and the local drying process can be performed after the overall drying process. In order to suppress the color from being transferred to the core of the next batch of zipper tapes via the conveying roller, it is preferred to perform the overall drying process after the local drying process, but in the case where the ink of the core of the current batch is the same or similar in color to the ink of the core of the next batch, the local drying process can also be performed after the overall drying process.

[0014] One embodiment of the present invention includes: a second dyeing step of dyeing the other side of the zipper tape; a second liquid coating step of coating the core portion of the other side of the zipper tape; a second partial drying step of drying only the core portion of the other side of the zipper tape; and a second overall drying step of drying the other side of the zipper tape as a whole. After the present invention performs the dyeing step, liquid coating step, partial drying step, and overall drying step on one side of the zipper tape, the dyeing step (second dyeing step), liquid coating step (second liquid coating step), partial drying step (second partial drying step), and overall drying step (second overall drying step) can be performed on the other side of the zipper tape in the same manner. The order of the steps performed on one side of the zipper tape is basically the same as that performed on the other side, but may be different.

[0015] According to another aspect of the present invention, there is provided a drying device for a zipper tape, which is used to dry only the core portion on one side of the zipper tape, and the device includes: a heat source; and a heat insulation plate, which is used to thermally isolate the portion of the one side of the zipper tape other than the core portion from the heat source.

[0016] The drying device for the zipper tape of the present invention is used in the partial drying process in the dyeing method for the zipper tape of the present invention. That is, in the partial drying process, the tape portion other than the core portion is thermally isolated from the heat source by the heat insulation board, so that only the core portion is dried. Thus, the color reproducibility of the core portion and the tape portion other than the core portion can be made uniform and stable through the overall drying process.

[0017] Effects of the Invention

[0018] In the method for dyeing a zipper tape according to the present invention, by applying a film-forming agent as an example of a chemical liquid to the core portion of one side of the zipper tape in the chemical liquid coating step, it is possible to suppress the color from being transferred to the core portion of the next batch of zipper tapes via a conveyor roller. In addition, by drying only the core portion in the partial drying step, the color reproducibility of the core portion and the tape portion other than the core portion can be made uniform and stable after the overall drying step.

[0019] In the drying device for the zipper tape of the present invention, in the partial drying process, the tape portion other than the core portion is thermally isolated from the heat source by a heat insulating plate, so that only the core portion is dried. Thus, the color reproducibility of the core portion and the tape portion other than the core can be made uniform and stable through the overall drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flowchart of the fastener tape dyeing method according to the first embodiment of the present invention.

[0021] Figure 2 This is a diagram schematically showing a chemical liquid coating system for performing a chemical liquid coating process.

[0022] Figure 3 This is a plan view showing a drying device for the fastener tape according to the present invention used in a partial drying step.

[0023] Figure 4 yes Figure 3 AA line cross-section diagram.

[0024] Figure 5 This is a schematic diagram for explaining how the color transition of the core is suppressed by the present invention.

[0025] Figure 6 This is a flowchart of the fastener tape dyeing method according to the second embodiment of the present invention.

[0026] Figure 7 This is a flowchart of the fastener tape dyeing method according to the third embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram for explaining the problem of color shift in the core.

[0028] Description of Reference Numerals

[0029] 1 zipper tape

[0030] 1a Zipper tape surface

[0031] 1b Back side of zipper tape

[0032] 2 core

[0033] 3a Tape part (the part other than the core part on the surface of the fastener tape)

[0034] 4 skin films

[0035] 10 Chemical coating system

[0036] 11 Coating nozzle

[0037] 12 liquid tank

[0038] 13 Drug solution path

[0039] 14 Air Path

[0040] 20Drying device for zipper tape

[0041] 21 Heat Source

[0042] 22 Insulation board DETAILED DESCRIPTION

[0043] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited to these embodiments. In the first to third embodiments of the present invention described below, a pair of left and right fastener tapes 1 (see Figure 2 , Figure 3 The zipper tapes 1 are simultaneously transported from upstream to downstream by a transport mechanism. In the transport process, the surface 1a of each zipper tape 1 is first subjected to a predetermined treatment process, and then the back side 1b of each zipper tape 1 is subjected to the same treatment process as the surface 1a. Alternatively, the back side 1b of the zipper tape 1 may be subjected to the treatment process first, and then the surface 1a may be subjected to the treatment process. Figure 2 , Figure 4 It can be seen that the left and right fastener tapes 1 have the thickest core portion 2 .

[0044] Figure 1 This is a flow chart of a dyeing method of a zipper tape 1 according to a first embodiment of the present invention. In the first embodiment, first, the surface 1a of the zipper tape 1 is dyed (dyeing process). In this dyeing process, the core 2 of the surface 1a of the zipper tape 1 and a flat portion 3a of the zipper tape 1 other than the core 2 (hereinafter referred to as a "tape portion") are dyed. As a dyeing method, for example, continuous printing by an inkjet printer can be cited.

[0045] Next, a film forming agent as an example of the chemical solution C is applied only to the core portion 2 of the surface 1a of the fastener tape 1 (chemical solution application step). The film forming agent is used to form a film 4 on the core portion 2 coated with ink in the dyeing step (see Figure 2 etc.) so that the ink in the core 2 will not be transferred to the conveying roller 30 of the conveying mechanism (see Figure 5 ) etc.

[0046] Figure 2 1 is a schematic diagram showing an example of a liquid coating system 10 for performing a liquid coating process. The liquid coating system 10 includes: two coating nozzles 11, which are respectively directed to the core 2 in the surface 1a of the left and right zipper tapes 1; a liquid tank 12, which stores a liquid (a film-forming agent in the first embodiment) C; a liquid path 13, which is used to supply the liquid C in the liquid tank 12 to each coating nozzle 11; and an air path 14, which is used to supply air to each coating nozzle 11. The liquid tank 12 is kept in a decompressed state by a decompression valve 15. In addition, an air valve 16 and an atmospheric release valve 17 are provided in the air path 14.

[0047] When the liquid medicine coating process is performed, the liquid medicine C in the liquid medicine tank 12 is squeezed toward the liquid medicine path 13 by the air by loosening the pressure reducing valve 15. The liquid medicine C is supplied in a pressurized state through the liquid medicine path 13 and fills the nozzle tip 11a of each coating nozzle 11. Next, by opening the air valve 16 and closing the atmospheric release valve 17, air is supplied to the nozzle tip 11a through the air path 14, and the nozzle tip 11a is opened. Thus, the liquid medicine C is discharged from the nozzle tip 11a to the core 2 together with the air. Then, by closing the air valve 16 and opening the atmospheric release valve 17, the nozzle tip 11a is closed and the discharge of the liquid medicine C is stopped.

[0048] Reference Figure 1 After the liquid medicine coating process, only the core portion 2 in the surface 1a of the zipper tape 1 is dried (partial drying process). After the partial drying process, the surface 1a of the zipper tape 1 is dried as a whole (overall drying process). When the surface 1a of the zipper tape 1 is dried as a whole without the partial drying process, the core portion 2, especially the core portion 2 formed with the film 4, is more difficult to dry than the tape portion 3a. Therefore, in order to dry the core portion 2 and the tape portion 3a in the same manner, the heat applied to the surface 1a as a whole will be excessive. In this case, there will be a difference in color reproducibility between the core portion 2 and the tape portion 3a. In the first embodiment of the present invention, such a disadvantage can be suppressed by performing a partial drying process before the overall drying process.

[0049] Figure 3 It is a top view which shows the drying apparatus 20 of the fastener tape which concerns on this invention used for the partial drying process. Figure 4 yes Figure 3 AA line cross-sectional view. The left and right zipper tapes 1 are viewed from the upstream side ( Figure 3 from the top of the paper) to the downstream side ( Figure 3 The zipper tape 1 is conveyed (below the paper surface) while the core 2 in the surface 1a of the zipper tape 1 is partially dried by the drying device 20. The drying device 20 includes a heat source 21 such as a carbon heater and a pair of left and right heat insulation plates 22. Figure 3 It can be seen that the heat source 21 and each heat shielding plate 22 are long in the length direction or conveying direction of the zipper tape 1. The heat source 21 is arranged at the center between the left and right zipper tapes 1 on the surface 1a side so as to be away from the surface 1a. Each heat shielding plate 22 is arranged so that the heat from the heat source 21 is substantially applied only to the core portion 2 in the surface 1a of the left and right zipper tapes 1 and is not applied to the tape portion 3a as much as possible. By passing the left and right zipper tapes 1 through the drying device 20 from upstream to downstream, only the core portion 2 in the surface 1a of the zipper tape 1 can be dried.

[0050] Reference Figure 1After the partial drying step, the surface 1a of the fastener tape 1 is dried as a whole (the overall drying step). Thus, the colors of the core portion 2 and the tape portion 3a on the surface 1a of the fastener tape 1 are uniformly reproduced. Next, the fastener tape 1 is turned over, and the second dyeing step, the second liquid coating step, the second partial drying step, and the second overall drying step are performed on the back side 1b of the fastener tape 1 in the same manner as the above-mentioned surface 1a.

[0051] Figure 5 This is a schematic diagram for explaining the suppression of color transfer in the core by the present invention. Figure 5 The top of the paper shows the current batch of zipper tapes 1. In the current batch of zipper tapes 1, the surface 1a has been subjected to a dyeing process, a liquid medicine coating process, a partial drying process, and an overall drying process, and the back surface 1b has been subjected to a second dyeing process, a second liquid medicine coating process, a second partial drying process, and a second overall drying process. Therefore, a film 4 of a film-forming agent is formed on the core portion 2 of the surface 1a and the back surface 1b of the zipper tape 1. This film 4 prevents the ink of the core portion 2 of the current batch of zipper tapes 1 from being transferred to the conveying roller 30, so that the ink does not adhere to the conveying roller 30. Figure 5 The core 2 of the next batch of fastener tapes 1 is shown at the bottom of the paper.

[0052] Figure 6 This is a flow chart of a method for dyeing a fastener tape according to a second embodiment of the present invention. In the second embodiment, the surface 1a of the fastener tape 1 is dyed (dyeing process), and then only the core portion 2 in the surface 1a of the fastener tape 1 is coated with a film forming agent (chemical solution coating process) to form a film 4. This is the same as the first embodiment. Next, the entire surface 1a of the fastener tape 1 is dried (overall drying process), and then only the core portion 2 in the surface 1a of the fastener tape 1 is dried (partial drying process). In the overall drying process, in particular, the drying conditions such as time, distance from the heat source, and temperature are adjusted so that the color reproducibility of the tape portion 3a can be ensured. In the partial drying process, the core portion 2, which is more difficult to dry than the tape portion 3a and is not completely dried in the overall drying process, is dried. Next, the fastener tape 1 is reversed, and the back side 1b of the fastener tape 1 is subjected to the second dyeing process, the second chemical solution coating process, the second overall drying process, and the second partial drying process in this order.

[0053] Figure 7This is a flow chart of a method for dyeing a zipper tape according to a third embodiment of the present invention. In the third embodiment, initially, only the core portion 2 in the surface 1a of the zipper tape 1 is coated with a penetrant as an example of a chemical solution C (chemical solution coating step). The penetrant helps the ink to penetrate into the core portion 2 which is thicker than the tape portion 3a. Next, the surface 1a of the zipper tape 1 is dyed (dyeing step). Then, similarly to the first embodiment, only the core portion 2 in the surface 1a of the zipper tape 1 is dried (partial drying step), and then the entire surface 1a of the zipper tape 1 is dried (entire drying step). Next, the zipper tape 1 is reversed, and the second chemical solution coating step, the second dyeing step, the second partial drying step, and the second entire drying step are sequentially performed on the back side 1b of the zipper tape 1.

Claims

1. A method for dyeing a zipper tape, characterized in that: include: A dyeing step of dyeing one side (1a) of the zipper tape (1); A step of applying a liquid medicine to a core portion (2) on one side (1a) of a zipper tape (1); A partial drying step of drying only the core portion (2) on one side (1a) of the fastener tape (1); and An entire drying step of drying one side (1a) of the fastener tape as a whole.

2. The method for dyeing a zipper tape according to claim 1, characterized in that: The dyeing step, the liquid medicine coating step, the partial drying step, and the overall drying step are performed in sequence.

3. The method for dyeing a zipper tape according to claim 1, characterized in that: The partial drying process is performed after the overall drying process.

4. The method for dyeing a zipper tape according to claim 1, characterized in that: The dyeing step is performed after the chemical solution coating step.

5. The method for dyeing a zipper tape according to claim 1 or 2, characterized in that: include: A second dyeing step of dyeing the other side (1b) of the zipper tape (1); A second liquid coating step of coating the core portion (2) on the other side (1b) of the zipper tape (1) with liquid; a second partial drying step of drying only the core portion (2) on the other side (1b) of the fastener tape (1); and A second entire drying step of drying the entire other surface (1b) of the fastener tape (1).

6. A drying device for a zipper tape, which is used to dry only the core part (2) in one side (1a) of a zipper tape (1), the drying device (20) for a zipper tape being characterized by comprising: Heat source (21); as well as A heat insulating plate (22) is used to thermally isolate a portion (3a) other than the core portion (2) in one side (1a) of the fastener tape (1) from the heat source (21).

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