WO2018150480A1

WO2018150480A1 - Correction device and correction method for fastener chain

Info

Publication number: WO2018150480A1
Application number: PCT/JP2017/005432
Authority: WO
Inventors: 文雄朝垣; 齋藤　崇; 拓深井
Original assignee: Ykk株式会社
Priority date: 2017-02-15
Filing date: 2017-02-15
Publication date: 2018-08-23
Also published as: TW201831755A; CN110300525A; TWI645093B; CN110300525B

Abstract

A correction device (10) according to the present invention has a chain supply unit (20) that supplies a fastener chain (1) in which curling tends to occur, a chain conveying unit (30) arranged on the downstream side of the chain supply unit (20), a chain heating unit (40) arranged between the chain supply unit (20) and the chain conveying unit (30), a chain cooling unit (50) arranged between the chain heating unit (40) and the chain conveying unit (30), and a chain tension application unit (60) that applies tension to the fastener chain (1). This makes it possible to straighten the form of a fastener chain (1) in which curling tends to occur, and to align an element gap in a left-side element row (3) with an element gap in a right-side element row (3).

Description

Fastener chain straightening device and straightening method

The present invention relates to a straightening device and a straightening method for correcting the form of a fastener chain for a slide fastener after dyeing in which curling has occurred due to thermal shrinkage when the dyeing process using a supercritical fluid is performed.

Conventionally, when dyeing textile products, a large amount of water has been used as a dyeing medium, but problems such as saving water resources and wastewater treatment have been pointed out, and dyeing technology with a lower environmental impact has been pointed out. Development was required. Under such circumstances, a method using a supercritical fluid as a dyeing medium has been proposed as a dyeing method with a very small amount of discharged waste liquid and a low environmental load.

A supercritical fluid is a condensable high-density fluid formed when the temperature and pressure are equal to or higher than the critical temperature and critical pressure of a substance, and has both gas diffusibility and liquid solubility. Moreover, water, carbon dioxide, etc. are known as a compound that becomes a supercritical fluid. The dyeing method using supercritical carbon dioxide as a supercritical fluid is a method of dyeing fiber products by dissolving a dye in supercritical carbon dioxide.

This dyeing method using supercritical carbon dioxide can shorten the dyeing time, can circulate carbon dioxide, does not emit dyeing waste liquid, and can be used after dyeing, for example, compared to the conventional dyeing method in which textile products are immersed in the dyeing solution. There are many advantages, such as the fact that the drying process of the textile product is unnecessary and that excess dye can be recovered.

Regarding such a dyeing method using supercritical carbon dioxide, for example, Japanese Patent Application Laid-Open No. 2005-273098 (Patent Document 1) uses supercritical carbon dioxide to add a gradation of light and dark to an object to be dyed such as a textile product. A method and apparatus for forming a pattern with good reproducibility is disclosed.

In addition, in International Publication No. 2012/105011 (Patent Document 2) filed by the present applicant, after a product is dyed in an autoclave using a supercritical fluid, the dyeing process is followed by dyeing. A cleaning method and a cleaning apparatus for cleaning the finished product and the autoclave are described.

As shown in FIG. 4, the dyeing / cleaning apparatus 100 of Patent Document 2 includes a dyeing / washing unit 110 for dyeing a product (fiber product) and washing the dyed fiber product and the autoclave 111, and the dyeing / washing unit. 110 includes a supply unit 120 that supplies carbon dioxide to 110, a discharge unit 130 that discharges carbon dioxide from the dyeing / cleaning unit 110, and a recovery unit 140 that recovers the carbon dioxide discharged through the discharge unit 130.

The dyeing / washing unit 110 circulates in the autoclave 111 that contains the product, the circulation path 112 that circulates supercritical carbon dioxide in the autoclave 111, the circulation pump 113 that is disposed on the circulation path 112, and the circulation path 112. A heating / cooling unit 114 that heats and cools supercritical carbon dioxide and carbon dioxide supplied from the supply unit 120; a temperature control unit 115 that measures the temperature in the autoclave 111 and controls the operation of the heating / cooling unit 114; The pressure control unit 116 measures the pressure in the autoclave 111 and controls the operation of a supply pump 122 described later and the opening / closing of a discharge valve 131 described later.

The autoclave 111 of Patent Document 2 is formed so that the fiber product can be accommodated and held inside the drum in a state where the fiber product is wound around a drum (or bobbin) (not shown). Moreover, the autoclave 111 has an inflow port through which supercritical carbon dioxide flows into the inside and an outflow port through which supercritical carbon dioxide flows out from the inside. In this case, the supercritical carbon dioxide flowing into the autoclave 111 from the inlet flows in the radial direction from the central shaft portion of the drum held in the autoclave 111 to the outside, and flows from the outlet of the autoclave 111 to the circulation path 112. leak.

The circulation path 112 is connected to an outlet and an inlet of the autoclave 111, and a circulation pump 113 and a heating / cooling unit 114 are provided on the circulation path 112. With this circulation path 112, the supercritical carbon dioxide flowing out from the outlet of the autoclave 111 can be returned to the inlet of the autoclave 111 and circulated again.

The temperature control unit 115 includes a temperature sensor 115a that measures the temperature in the autoclave 111, and a temperature control main body 115b that controls the operation of the heating / cooling unit 114 based on the measurement result of the temperature sensor 115a. The temperature control unit 115 controls the temperature in the autoclave 111. The pressure control unit 116 includes a pressure sensor 116a that measures the pressure in the autoclave 111, and a pressure control main body 116b that controls the operation of the supply pump 122 and the opening / closing of the discharge valve 131 based on the measurement result of the pressure sensor 116a. . The pressure control unit 116 controls the pressure in the autoclave 111.

The supply unit 120 includes a storage tank 121 for storing carbon dioxide, a supply pump 122 for supplying carbon dioxide from the storage tank 121 toward the dyeing / cleaning unit 110, and a cooler disposed between the storage tank 121 and the supply pump 122. Section (first cooler section) 123 and a preheating section 124 that is disposed downstream of the supply pump 122 and preheats the carbon dioxide before supplying it to the dyeing / cleaning unit 110.

The supply pump 122 of the supply unit 120 sucks liquid carbon dioxide from the storage tank 121 and sends it to the dyeing / cleaning unit 110. Further, the flow rate (supply amount) of the carbon dioxide of the supply pump 122 is controlled by the pressure control unit 116 of the dyeing / cleaning unit 110.

Further, since the supply pump 122 is provided in a pipe line arranged separately from the circulation path 112, after the product dyeing process is completed in the autoclave 111, the circulation pump 113 uses the autoclave 111 and the circulation path 112. The supercritical carbon dioxide can be continuously supplied to the washing unit without circulating the dye while circulating the supercritical carbon dioxide. For this reason, it becomes possible to perform the washing | cleaning process of a product and the autoclave 111 continuously from a dyeing | staining process.

The cooler unit 123 of the supply unit 120 is disposed upstream of the supply pump 122 and cools carbon dioxide sucked from the storage tank 121 by the supply pump 122. By cooling the carbon dioxide with the cooler unit 123, the carbon dioxide can be sent to the supply pump 122 in a liquid state, and thereby the supply of carbon dioxide in the supply pump 122 can be stabilized.

The preheating unit 124 can preheat the carbon dioxide that has passed through the supply pump 122 to a supercritical state before supplying it to the dyeing / cleaning unit 110. Further, between the supply pump 122 and the dyeing / cleaning unit 110, a bypass that allows the carbon dioxide supplied from the supply pump 122 to be supplied to the dyeing / cleaning unit 110 without passing through the preheating unit 124. A path 125 is provided. Furthermore, first and second on-off

valves

126 and 127 for switching the flow path of carbon dioxide are disposed at the upstream position of the preheating unit 124 and the bypass path 125.

The discharge unit 130 includes a discharge valve 131 that discharges supercritical carbon dioxide from the circulation path 112 and a separation tank 132 that is arranged on the downstream side of the discharge valve 131. In this case, the discharge valve 131 is connected to the pressure control unit 116, and the opening / closing of the discharge valve 131 is controlled by the pressure control unit 116. The separation tank 132 separates dyes and other impurities from the carbon dioxide discharged and vaporized.

The recovery unit 140 includes a compressor 141 that sucks and compresses carbon dioxide in a gaseous state from the separation tank 132, and an after cooler 142 that cools the compressed carbon dioxide to make it liquid. The carbon dioxide liquefied by the aftercooler 142 is transported to the storage tank 121 of the supply unit 120 and stored.

When a textile product is dyed using the dyeing / cleaning apparatus 100 of Patent Document 2 as described above, first, the textile product is wound around a drum, and the textile product is housed and held inside the autoclave 111 together with the drum. . Further, a dye (dispersed dye) is accommodated in the autoclave 111 together with the fiber product.

Next, the supply pump 122 of the supply unit 120 is driven to supply carbon dioxide from the storage tank 121 to the staining / washing unit 110 via the supply pump 122 and the preheating unit 124. At this time, the carbon dioxide is boosted by the supply pump 122, further heated by the preheating unit 124, and supplied to the dyeing / cleaning unit 110 in a supercritical state.

When the supercritical carbon dioxide (hereinafter referred to as supercritical carbon dioxide) is supplied from the supply unit 120, the dyeing / cleaning unit 110 drives the circulation pump 113 to circulate the supplied supercritical carbon dioxide. Circulate through path 112 and autoclave 111. In this case, the supercritical carbon dioxide introduced into the autoclave 111 flows in the radial direction from the central shaft portion of the drum around which the fiber product is wound toward the outer peripheral portion, and flows out from the outlet of the autoclave 111.

The temperature control unit 115 controls the driving of the heating / cooling unit 114 disposed on the circulation path 112 while measuring the temperature in the autoclave 111, so that the temperature in the autoclave 111 is set in advance. It is kept at a predetermined set temperature. Further, the pressure control unit 116 controls the operation of the supply pump 122 and the opening / closing of the discharge valve 131 while measuring the pressure in the autoclave 111, whereby the pressure in the autoclave 111 is set to a predetermined setting. Held in pressure.

By circulating the supercritical carbon dioxide to the autoclave 111 as described above for a predetermined time, the fibers of the fiber product accommodated in the autoclave 111 are swollen by the heat of the supercritical carbon dioxide and the swollen. Since the supercritical carbon dioxide in which the dye is dissolved enters the fiber and diffuses, the fiber product is dyed. In such a dyeing process using supercritical carbon dioxide, a fiber product can be dyed in a relatively short time without using water.

Further, in the dyeing / cleaning apparatus 100 of Patent Document 2, after the above-described dyeing process is completed, the cleaning process is continuously performed on the fiber product and the site through which supercritical carbon dioxide such as the autoclave 111 passes.
In this cleaning process, the supply pump 122 is driven and the discharge valve 131 is opened while the supercritical carbon dioxide is circulated through the circulation path 112. As a result, pure supercritical carbon dioxide containing no dye is supplied from the supply unit 120 to the dyeing / cleaning unit 110, and at the same time, supercritical carbon dioxide in which the dye is dissolved is discharged from the dyeing / cleaning unit 110 to the discharge valve 131. It is discharged through.

As a result, while the concentration of the dye in the supercritical carbon dioxide circulating through the autoclave 111 and the circulation path 112 is gradually decreased with time, the fiber product, the autoclave 111 and the like can be washed with the supercritical carbon dioxide. At this time, the temperature control unit 115 controls the heating / cooling unit 114 while cleaning the fiber product or the like, thereby lowering the temperature in the autoclave 111 to a glass transition temperature or lower at a predetermined temperature decrease rate. This prevents the dye dissolved in supercritical carbon dioxide from precipitating and shrinks the fibers of the fiber product that was swollen at the time of dyeing, preventing the dye from coming out of the fiber and dropping the color. it can.

Meanwhile, the carbon dioxide discharged and vaporized through the discharge valve 131 is conveyed to the separation tank 132, and the dye is separated from the carbon dioxide in the separation tank 132. Thereafter, the carbon dioxide from which the dye has been separated is compressed by the compressor and then cooled by the aftercooler 142 to be liquefied. The liquid carbon dioxide is returned from the aftercooler 142 to the storage tank 121 for reuse.

As described above, according to the dyeing / cleaning apparatus 100 of Patent Document 2, the washing process of the fiber product and the autoclave 111 can be continuously performed subsequent to the dyeing process, whereby the textile product and the autoclave 111 can be efficiently performed. Can be washed.

JP 2005-273098 A International Publication No. 2012/105011

As described above, the dyeing method using a supercritical fluid is also considered to be used for dyeing fastener chains for slide fasteners because the dyeing process is efficient and the load on the environment is low. Yes.

Here, the fastener chain has a pair of left and right fastener tapes, and left and right element rows formed on opposite tape side edges of each fastener tape. In a normal fastener chain, the left and right element rows are They are in mesh with each other. Further, the element chain of the fastener chain is formed by forming a synthetic resin monofilament into a coil shape to form a plurality of continuous fastener elements, and further, the plurality of molded fastener elements are arranged at the tape side edge of the fastener tape. It is formed by placing and sewing on one tape surface.

For this reason, the fastener chain having an element row composed of a plurality of coil-shaped fastener elements has the left and right element rows in the meshed state, the tape side edge portions of the left and right fastener tapes facing each other (the center in the tape width direction of the fastener chain). (Part) is provided with a form bulging from the tape front surface or the back surface of the fastener tape.

When such a fastener chain for a slide fastener is subjected to a dyeing process using a supercritical fluid dyeing method using, for example, the dyeing / cleaning apparatus 100 shown in FIG. Therefore, it is necessary to wind the long fastener chain around the drum several times and to store the fastener chain together with the drum in the autoclave 111.

Here, as described above, the fastener chain has a form in which the left and right element rows in a meshed state bulge out from one tape surface of the fastener tape, so that the fastener chain is used for dyeing with a supercritical fluid. When multiple layers are wound around the drum, the fastener chain is shifted in the axial direction of the drum as in the case of a conventional dyeing process in which, for example, a dyeing solution is immersed in a dyeing solution while the fastener chain is wound around the drum. While being spirally wound. The winding method in which the fastener chain is spirally wound around the drum in this way is sometimes called traverse winding.

By winding the fastener chain spirally around the drum in this way, the element chain of the fastener chain does not easily overlap with the element row already wound around the drum, and the fastener chain is efficiently wound around the drum. In addition, it is possible to make it difficult for the fastener chain wound around the drum to be displaced.

However, when the dyeing process using the supercritical fluid dyeing method with the fastener chain spirally wound around the drum is actually tried, high temperature heating and dyeing process using the supercritical fluid in the dyeing process of the fastener chain It has been found that, by subsequent cooling, the fastener tape made of synthetic fiber and the synthetic resin element array are heat-set according to the form wound around the drum, and the entire fastener chain is deformed.

That is, when the dyed and cooled fastener chain is pulled out from the drum and observed, the fastener chain has a fastener chain in accordance with the winding direction of the traverse winding around the drum, for example, as shown in FIG. In plan view, one of the pair of left and right element rows is bent in a convex shape toward the other element, and the other is bent in a curved shape in which the other side is bent in a concave shape toward the other element. It was.

When the fastener chain has a curved shape due to such a curl, the spacing between the fastener elements in the element row (in other words, the mounting pitch of the fastener elements) is such that the left element row and the right element row are As a result, there is a problem that when the slide fastener is formed, the slidability and operability of the slider are lowered. In addition, the slide fastener with the above-described curl is also difficult to attach to a fastener-attached product such as clothes in a straight and clean manner.

Therefore, in the state where the fastener chain is spirally wound around the drum, when the dyeing process is performed by the dyeing method using the supercritical fluid, the shape of the curved fastener chain after dyeing with the curl is changed to the pre-dyeing form. It turned out that it was necessary to return to a straight state.

The present invention has been made in view of the above-described conventional problems, and a specific object thereof is a dyeing process using a supercritical fluid for a fastener chain in a state where the fastener chain is spirally wound around a drum. It is an object of the present invention to provide a fastener chain straightening device and a straightening method capable of easily correcting the form of a dyed fastener chain in which curling has occurred due to heat shrinkage.

In order to achieve the above object, the fastener chain straightening device for slide fasteners provided by the present invention is wound by heat when dyeing using a supercritical fluid is performed while being wound around a drum. In the fastener chain straightening device for correcting the form of the fastener chain in order to remove the curl of the fastener chain for the slide fastener after dyeing in which the stain has occurred, the chain for supplying the fastener chain in which the curl is generated A supply unit; a chain conveyance unit that is arranged downstream of the chain supply unit and conveys the fastener chain from the chain supply unit along a conveyance path at a predetermined conveyance speed; the chain supply unit and the chain conveyance unit A chain that is disposed between and for heating the fastener chain on the conveyance path A heating part, a chain cooling part that is arranged between the chain heating part and the chain transport part, and cools the fastener chain after heating on the transport path; and the flow through the chain heating part and the chain cooling part The main feature is that it has a chain tension applying portion for applying tension to the fastener chain.

In such a fastener chain correction device according to the present invention, a plurality of guide rollers for zigzagging the conveyance path of the fastener chain are disposed between the chain supply unit and the chain conveyance unit, It is preferable that the transport distance of the fastener chain transported in the chain heating unit is set shorter than the transport distance of the fastener chain transported in the chain cooling unit.
In this case, the chain heating unit includes a heat source disposed between the meandering conveyance paths, and the heat source is formed to be able to heat the fastener chain at a temperature increase rate of 30 ° C./min or more. Preferably it is. Furthermore, the heat source is preferably a panel-shaped infrared heater.

In the straightening device according to the present invention, the chain heating part may be formed so that the fastener chain can be heated to a temperature not lower than a glass transition temperature of a synthetic resin forming a fastener element of the fastener chain and not higher than 120 ° C. preferable.
Moreover, it is preferable that the said chain cooling part is formed so that it can cool to at least below glass transition temperature by natural air cooling, conveying the said fastener chain.

Further, in the straightening device according to the present invention, the chain tension applying part has a dancer roller for applying a load to the fastener chain, and the dancer roller is close to the chain heating part of the conveyance path in the chain cooling part. It is preferable to be arranged at the position.

Next, the method for correcting a fastener chain for a slide fastener provided by the present invention is such that after a dyeing process using a supercritical fluid is performed in a state of being wound around a drum, after the dyeing process occurs, In the fastener chain correcting method for correcting the form of the fastener chain in order to remove the curl of the fastener chain for the slide fastener, the fastener chain in which the curl is generated is supplied at a predetermined conveying speed. Conveying, heating the supplied fastener chain with a chain heating unit while conveying, cooling the heated fastener chain with a chain cooling unit while conveying, and the chain heating unit and the Apply tension to the fastener chain flowing through the chain cooling section. It is an most important feature to become Nde.

Further, in the correction method of the present invention, the fastener chain is conveyed while meandering in a zigzag shape, and the conveyance distance of the fastener chain conveyed in the chain heating unit is conveyed in the chain cooling unit. It is preferable to include making it shorter than the conveyance distance of a fastener chain.

Furthermore, the correction method of the present invention is such that, in the chain heating portion, the fastener chain is heated at a rate of temperature of 30 ° C./min or higher and the glass transition temperature of the synthetic resin forming the fastener element of the fastener chain is 120 ° C. or lower. It is preferable to include heating to the temperature.
Furthermore, the straightening method of the present invention preferably includes cooling at least to a glass transition temperature or lower by natural air cooling while transporting the fastener chain in the chain cooling section.

The fastener chain straightening device according to the present invention includes a chain supply unit that supplies a fastener chain in which curl is generated, a chain conveyance unit that is disposed downstream of the chain supply unit, and between the chain supply unit and the chain conveyance unit. A chain heating part for heating the fastener chain, a chain cooling part for cooling the heated fastener chain, and a fastener chain flowing through the chain heating part and the chain cooling part. And a chain tension applying portion for applying tension to the belt.

In such a correction device of the present invention, the fastener chain in which the curved curl is generated is transported at a predetermined transport speed along the transport path from the chain supply section by the chain transport section, and at the chain heating section. Tension can be applied to the fastener chain flowing through the chain heating portion while heating the fastener chain by the chain tension applying portion. As a result, the fastener chain is heated while being stretched on the conveyance path of the chain heating unit to straighten the shape of the fastener chain, and the interval between the fastener elements (hereinafter abbreviated as element interval) is set between the left and right element rows. Can be arranged.

In the straightening device of the present invention, after the fastener chain is heated by the chain heating unit, the chain tension applying unit applies tension to the fastener chain flowing through the chain cooling unit while cooling the heated fastener chain by the chain cooling unit. To do. Thereby, since the fastener chain straightened by the chain heating part is cooled while maintaining its form, the form of the straight fastener chain can be fixed and stably held. Furthermore, it is possible to prevent the element spacing of the element rows from being shifted between the left and right element rows. Accordingly, a dyed fastener chain having a straight shape can be obtained with the curl removed.

Furthermore, in the present invention, in order to apply a certain amount of tension to the fastener chain flowing through the chain cooling portion, the amount of heat shrinkage of the fastener chain is regulated, and the element interval in the left and right element rows is set to the entire tape length direction. Can be adjusted to a certain size. As a result, the dimension variation between the left and right element rows and the dimension variation in the tape length direction of the left and right element rows are reduced, and the dimension of the element row is stabilized over the entire fastener chain. Dimensional accuracy can be improved.

In such a correction device of the present invention, a plurality of guide rollers that meander the zipper path of the zipper chain is disposed between the chain supply unit and the chain transfer unit. Thereby, size reduction of a correction apparatus can be achieved, ensuring the length of the conveyance path of a fastener chain stably.

Further, in this case, the transport distance of the fastener chain transported in the chain heating unit is set shorter than the transport distance of the fastener chain transported in the chain cooling unit. Thus, the correction device can be further miniaturized by setting the conveyance distance of the chain heating unit to be shorter than the conveyance distance of the chain cooling unit and efficiently heating the fastener chain by the chain heating unit. Furthermore, by extending the shape of the fastener chain straight at the chain heating section with a short conveying path, the distance that the fastener chain is conveyed in the state where the curved curl is generated can be shortened as a result. Transport can be made more stable.

In addition, by increasing the transport distance of the chain cooling unit and the transport distance of the chain heating unit, the chain cooling unit can be slowly (slowly) cooled while applying tension to the heated fastener chain. For this reason, it can prevent that a fastener tape and an element row | line | column shrink | contract rapidly, and can make it more difficult to produce variation in the amount of thermal contractions of a fastener tape and an element row | line | column.

In this case, the chain heating unit has a heat source disposed between the meandering conveyance paths.
Thereby, in a chain heating part with a short conveyance distance, a fastener chain can be efficiently and stably heated with the heat source. In addition, the installation space for the heat source can be compacted, and space saving can be achieved. Furthermore, the heat source of the chain heating unit is formed so that the fastener chain can be heated at a temperature increase rate of 30 ° C./min or more. As a result, the fastener chain can be stably and rapidly heated to a predetermined temperature with a chain heating section having a short conveying distance.

In particular, since the heat source of the chain heating part is a panel-shaped infrared heater (far infrared heater), the chain heating part can be formed with a simple structure and the fastener chain can be stably heated in the chain heating part. it can. In addition, as a heat source of a chain heating part, you may utilize resistance heating etc., for example.

Further, in the straightening device of the present invention, the chain heating part is formed so that the fastener chain can be heated to a temperature not lower than the glass transition temperature of the synthetic resin forming the fastener element of the fastener chain and not higher than 120 ° C.

¡By heating the fastener chain to a temperature higher than the glass transition temperature of the fastener element in the chain heating section, the left and right element rows can be corrected and the element spacing can be stably aligned. Particularly in this case, by heating the fastener chain at a temperature higher than the glass transition temperature of the synthetic fiber forming the fastener tape in the chain heating part, the fastener chain in which the curl is generated in the chain heating part can be stabilized more stably. It can be stretched into a straight form.

On the other hand, in the chain heating unit, the fastener chain is heated at a temperature of 120 ° C. or lower, thereby preventing color fading from occurring in the fastener chain dyed with the supercritical fluid, and the chain heating unit heating the fastener chain. It is also possible to prevent the dyeing fastness of the ink from decreasing.

Furthermore, in the straightening device of the present invention, the chain cooling part is formed so as to be cooled to at least the glass transition temperature or less by natural air cooling while conveying the fastener chain. Accordingly, the fastener chain can be slowly and stably cooled by the chain cooling portion, and variations in the heat shrinkage amounts of the fastener tape and the element row can be made more difficult to occur. Moreover, the increase in equipment cost can also be suppressed.

Furthermore, in the straightening device of the present invention, the chain tension applying part has a dancer roller for applying a load to the fastener chain. Thereby, while being able to form a chain tension | tensile_strength addition part simply, the tension | tensile_strength of predetermined magnitude | size can be stably added with respect to the fastener chain which flows through a chain heating part and a chain cooling part.

Further, in this case, the dancer roller is arranged at a position near the chain heating part of the conveyance path in the chain cooling part, so that it becomes difficult to be affected by the heating of the chain heating part. Furthermore, since the dancer roller is arranged at the above-mentioned position, tension can be stably applied to the fastener chain flowing through the chain cooling section, and tension can also be stably applied to the fastener chain flowing through the chain heating section. Can do.

Next, in the method for correcting a fastener chain for a slide fastener provided by the present invention, a fastener chain having curled wrinkles is supplied and transported at a predetermined transport speed, and the fastener chain is heated by a chain heating unit. However, tension is applied to the fastener chain flowing through the chain heating section. Thereby, it is possible to straighten the form of the fastener chain by heating the fastener chain while heating the fastener chain on the conveyance path of the chain heating unit, and to make the element spacing uniform between the left and right element rows.

After the fastener chain is heated by the chain heating unit as described above, the heated fastener chain is transported to the chain cooling unit, and the chain cooling unit cools the fastener chain while the fastener chain flows through the chain cooling unit. Add tension. Thereby, since the fastener chain straightened by the chain heating part is cooled while maintaining its form, the form of the straight fastener chain can be fixed and stably held. Furthermore, it is possible to prevent the element spacing of the element rows from being shifted between the left and right element rows. Therefore, a dyed fastener chain having a straight shape with the curl removed can be stably obtained.

Furthermore, in the present invention, by applying a certain amount of tension to the fastener chain flowing through the chain cooling section, the element spacing in the left and right element rows is adjusted to a certain size over the entire tape length direction. Can do. As a result, the dimension variation between the left and right element rows and the dimension variation in the tape length direction of the left and right element rows can be reduced, and the dimensions of the element rows can be stabilized over the entire fastener chain. The dimensional accuracy of the fastener chain can be improved. In this case, the element spacing of the element rows can be adjusted by changing the magnitude of the tension applied to the fastener chain.

In such a correction method of the present invention, the fastener chain is conveyed while meandering in a zigzag shape, whereby the length of the conveyance path of the fastener chain can be stably secured and the correction device can be downsized. .

In this case, the fastener chain transported in the chain heating unit is set to be shorter than the fastener chain transported in the chain cooling unit, and the fastener chain is efficiently heated by the chain heating unit. Thus, it is possible to further reduce the size of the correction device. Furthermore, by shortening the conveying path of the chain heating part and extending the shape of the fastener chain straight, the distance that the fastener chain is conveyed in a state where the curved curl is generated can be shortened as a result. Chain transportation can be made more stable.

In the straightening method of the present invention, in the chain heating portion, the fastener chain is heated at a rate of temperature of 30 ° C./min or more, and the temperature of the glass transition temperature of the synthetic resin forming the fastener element of the fastener chain is 120 ° C. or less. Heat to. By heating the fastener chain at a temperature rising rate of 30 ° C./min or more, the fastener chain can be stably and rapidly heated to a predetermined temperature by the chain heating unit. Further, in the chain heating unit, the fastener chain is heated to a temperature higher than the glass transition temperature of the fastener element, and further, the fastener chain is heated to a temperature higher than the glass transition temperature of the synthetic fiber forming the fastener tape. A fastener chain having a ridge can be more stably stretched into a straight form. In addition, the chain heating unit heats the fastener chain at a temperature of 120 ° C. or lower, thereby preventing color fading from occurring in the fastener chain dyed with the supercritical fluid, and the chain heating unit heating the fastener chain. It is also possible to prevent the dyeing fastness of the ink from decreasing.

Furthermore, in the straightening method of the present invention, the fastener chain is cooled slowly and stably in the chain cooling unit by cooling it to at least the glass transition temperature or less by natural air cooling while conveying the fastener chain in the chain cooling unit. It is possible to make it more difficult to cause variations in the heat shrinkage of the fastener tape and the element row.

It is a schematic diagram which shows typically the correction apparatus which concerns on this invention. It is a top view which shows the fastener chain before the dyeing | staining process and after the correction process by the correction apparatus. It is a top view which shows the fastener chain in which the curl is produced by the dyeing | staining process. It is a schematic diagram which shows typically the structure of the apparatus which dyes | stains and wash | cleans a fastener chain.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings by way of examples. The present invention is not limited to the examples described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and has the same effects. Is possible.

For example, in the following embodiment, a description will be given of a case where a correction process for removing a curl due to a dyeing process is performed on a fastener chain formed by a plurality of fastener elements in which left and right element rows are continuous in a coil shape. However, the present invention provides a fastener chain formed by a plurality of continuous fastener elements in which the left and right element rows are formed in a zigzag shape from a synthetic resin monofilament, and a plurality of single fasteners in which the left and right element rows are injection molded. The present invention can be similarly applied to a case where correction processing is performed on a fastener chain formed of elements.

FIG. 1 is a schematic diagram schematically illustrating a correction apparatus according to the present embodiment.
In the present embodiment, the object to be corrected using the correction device of FIG. 1 is subjected to dyeing and cleaning processing using, for example, the device shown in FIG. 4 on the fastener chain for the slide fastener shown in FIG. As a result, the fastener chain after dyeing has a curled curl as shown in FIG.

Here, the fastener chain 1 shown in FIG. 2 has a pair of left and right fastener stringers 2, and the element rows 3 formed on the left and right fastener stringers 2 are meshed with each other. Each fastener stringer 2 includes a fastener tape 4 formed by weaving polyester fibers, and a plurality of coil-like fastener elements 5 sewn on opposite edges of the fastener tape 4. An element row 3 is formed by a plurality of fastener elements 5 attached to the fastener tape 4.

In this case, the fastener tape 4 extends from the one side edge of the element attachment portion to which the fastener element 5 is sewn and the tape width direction, and is sewn to a fastener-attached product such as clothes. And a tape main part.

The plurality of fastener elements 5 are formed in a continuous manner by forming a monofilament made of polyester into a coil shape, and each fastener element 5 extends in the tape width direction from the meshing head and the meshing head. And upper and lower leg portions, and a connecting portion that connects the end portions of the upper leg portion or the lower leg portion to the lower leg portion or the upper leg portion of the element adjacent to the front and rear. In such a coil-shaped fastener element 5, the meshing head is projected outward from the tape side edge on the element mounting portion side of the fastener tape 4 with the core string inserted between the upper and lower leg portions. The element mounting portion is sewn by double ring stitching of the sewing thread 6.

When such a fastener chain 1 is dyed with a supercritical fluid (supercritical carbon dioxide) using the dyeing / cleaning apparatus 100 shown in FIG. 4, as described above, first, a long fastener is used. The chain 1 is wound around a drum (not shown), and the fastener chain 1 is housed in the autoclave 111 together with the dye together with the dye. At this time, since the left and right element rows 3 of the fastener chain 1 bulge from the tape surface of the fastener tape 4, the fastener chain 1 is wound around the drum by traverse winding while being displaced in the axial direction in a spiral manner.

After the fastener chain 1 and the dye are accommodated in the autoclave 111, supercritical carbon dioxide is supplied from the supply unit 120 to the dyeing / cleaning unit 110 as described above. Further, the circulation pump 113 of the dyeing / washing unit 110 is driven to circulate supercritical carbon dioxide in the circulation path 112 and the autoclave 111, and the temperature and pressure in the autoclave 111 are adjusted by the temperature controller 115 and the pressure controller 116. Control. Thereby, the fastener chain 1 accommodated in the state wound around the drum in the autoclave 111 is dye | stained.

After the dyeing process is completed for a predetermined time, the cleaning process is continuously performed. In this cleaning process, as described above, the concentration of the dye in the supercritical carbon dioxide circulating through the autoclave 111 and the circulation path 112 is gradually decreased with time, and the temperature in the autoclave 111 is changed to the glass transition temperature at a predetermined temperature decrease rate. The fiber product and the autoclave 111 are washed with the supercritical carbon dioxide while being reduced to the following.

Thereby, the textile product and the autoclave 111 are washed while preventing the dyed color on the fastener chain 1 from dropping off. In this case, since the dyeing / cleaning process is performed by the dyeing / cleaning apparatus 100 shown in FIG. 4 in a state where the fastener chain 1 is spirally wound around the drum, the fastener chain 1 obtained after the dyeing process and the cleaning process is performed. The fastener chain 1 has a curled bias-shaped curl as shown in FIG. 3 due to thermal shrinkage after the dyeing process.

Incidentally, the fastener chain 1 has a curl that is curved to the left as shown in FIG. 3 and a curl that is curved to the left as shown in FIG. 3 according to the direction in which the fastener chain 1 is spirally wound around the drum. Further, for example, when the fastener chain 1 is spirally wound around the drum, the fastener chain 1 is wound spirally while being shifted in one axial direction (for example, upward) of the drum, and the other direction in the axial direction of the drum ( For example, when the spiral winding method is alternately performed while being shifted downward), the fastener chain 1 is alternately formed with a curl wound leftward and a curl curl curved rightward.

It should be noted that the above-described dyeing process and cleaning process are merely examples for explaining that curling occurs in the fastener chain 1 by the dyeing process with the supercritical fluid. The present invention is directed to the case where the fastener chain 1 is wound around the drum by the dyeing process using the supercritical fluid in a state where the fastener chain 1 is spirally wound around the drum. The purpose is to remove the curl of the fastener chain 1 using the correction device 10 described below. For this reason, in this invention, the dyeing | staining process using the supercritical fluid performed to the fastener chain 1, and the concrete method and conditions in the subsequent washing | cleaning process are not specifically limited.

In the present embodiment, when a curl that has a curved shape as shown in FIG. 3 occurs in the fastener chain 1, the correction device 10 shown in FIG. 1 is used for the fastener chain 1. By performing the correction process, the curl of the fastener chain 1 is removed, and the fastener chain 1 is corrected (deformed) into the original straight form as shown in FIG. In the following, a case will be described in which the fastener chain 1 is set on the correction device 10 from the above-described dyeing / cleaning process while being wound around the drum 8 in a spiral manner.

The straightening device 10 of the present embodiment shown in FIG. 1 is arranged on the downstream side of the chain supply unit 20 that draws out and supplies the fastener chain 1 wound around the drum 8, and the fastener chain 1 A plurality of guide rollers that zigzag meander the transport path of the fastener chain 1 formed between the chain supply section 20 and the chain transport section 30 by pulling and transporting at a predetermined transport speed from the chain supply section 20 11, a chain heating unit 40 disposed between the chain supply unit 20 and the chain transport unit 30, a chain cooling unit 50 disposed between the chain heating unit 40 and the chain transport unit 30, and a tension applied to the fastener chain 1. Chain tension applying part 60 to be corrected, and a corrected fastener chain sent out from the chain conveying part 30 And a chain collecting part 70 for collecting the.

In this embodiment, the chain supply unit 20 includes a drum holding unit 21 that rotatably holds the drum 8 around which the fastener chain 1 is wound, and a supply roller unit 22 that continuously pulls out and supplies the fastener chain 1 from the drum 8. And a supply portion guide roller 23 for directing the traveling direction of the fastener chain 1 toward the chain heating portion 40.

The drum holding part 21 has a base part 21a and a support roller part 21b that is rotatably supported by the base part 21a and holds and holds the drum 8. The support roller portion 21b has front and rear rotary shaft portions pivoted on the base portion 21a and left and right rotary rollers fixed to the respective rotary shaft portions, and the drum 8 around which the fastener chain 1 is wound is The support roller portion 21b is rotatably supported by the four rotation rollers.

The supply roller unit 22 includes a drive supply roller 22a that rotates at a set rotational speed, a supply pressure contact roller (not shown) that presses the fastener chain 1 against the drive supply roller 22a, and a drive supply roller 22a and a supply pressure contact roller. A supply roller control unit (not shown) for controlling the rotation of the motor.

In this supply roller portion 22, the drive supply roller 22a and the supply pressure contact roller rotate while sandwiching the fastener chain 1, thereby pulling out the fastener chain 1 from the drum 8 held by the drum holding portion 21, and the chain heating portion. 40 can be sent out. Further, in this case, the drive supply roller 22a, the supply pressure contact roller, and the supply unit guide roller 23 are arranged so that the chain width (in the tape width direction) of the fastener chain 1 is smoothly transferred in order to smoothly convey the fastener chain 1 with the curved winding rod. The roller width is larger than the dimension (1).

In the present invention, the chain supply unit 20 is not limited to the above-described form, and if the fastener chain 1 in which curl is generated can be sent to the chain heating unit 40 at a preset speed, You may have another form. For example, in the chain supply unit 20 of the present embodiment, the fastener chain 1 with the curl is continuously pulled out from the drum 8 set in the drum holding unit 21 and supplied to the chain heating unit 40. When the fastener chain 1 with the flange is already pulled out from the drum 8 and accommodated in a box or the like, the drum holding portion 21 as described above may not be installed.

The chain conveyance unit 30 is arranged on the downstream side of the chain heating unit 40 and the chain cooling unit 50. The chain conveying unit 30 includes a conveying unit guide roller 31 that changes the traveling direction of the fastener chain 1 while rotating, a driving conveying roller 32 that rotates at a set rotation speed, and the fastener chain 1 that faces the driving conveying roller 32. A conveying pressure roller (not shown) that is pressed and pressed, and a conveyance roller controller (not shown) that controls the rotation of the conveyance supply roller and the conveyance pressure roller, and draws in the fastener chain 1 supplied from the chain supply unit 20. Then, it is discharged to the chain collecting section 70.

In this case, the rotation speed of the drive conveyance roller 32 in the chain conveyance unit 30 is set to the same speed as the rotation speed of the drive supply roller 22a in the chain supply unit 20, or faster than the rotation speed of the drive supply roller 22a. This prevents the fastener chain 1 conveyed between the chain supply unit 20 and the chain conveyance unit 30 from being slackened during the correction process, and the chain tension applying unit 60 tensions the fastener chain 1. When adding, the magnitude of the applied tension can be stabilized.

Between the chain supply unit 20 and the chain conveyance unit 30, 17 guide rollers 11 of the first guide roller 11a to the 17th guide roller 11q are divided into upper and lower parts in order from the chain supply unit 20, and The guide roller 11 and a dancer roller 61 (to be described later) of the chain tension applying unit 60 meander the conveying path of the fastener chain 1 in a zigzag manner.

In this case, the first guide roller 11a to the seventeenth guide roller 11q and the dancer roller 61 are provided with the fastener chain 1 while the fastener chain 1 is being conveyed from the supply roller portion 22 of the chain supply portion 20 to the chain conveyance portion 30. Flange portions are provided at the left and right ends of each guide roller 11 so that the position of 1 does not shift in the chain width direction.

Particularly in the present embodiment, the first, third, fourth, fifth, seventh, ninth, eleventh, thirteenth, fifteenth, and

seventeenth guide rollers

11a, 11c, 11d, 11e, 11g, 11i, and 11k. 11m, 11o, 11q are attached to the upper frame 12 of the straightening device 10, and the second, sixth, eighth, tenth, twelfth, fourteenth,

sixteenth guide rollers

11b, 11f, 11h, 11j , 11l, 11n, and 11p are attached to the lower frame 13 of the correction device 10. Thereby, size reduction of the correction apparatus 10 can be achieved, ensuring the length of the conveyance path of the fastener chain 1 stably.

Further, in this embodiment, the first guide roller 11a to the third guide roller 11c form a fastener chain 1 conveyance path for reciprocating the fastener chain 1 up and down once in a housing part 41 described later of the chain heating part 40. Yes. In this case, the first and

third guide rollers

11 a and 11 c are disposed above the housing portion 41, and the second guide roller 11 b is disposed at the lower end portion in the housing portion 41. Thus, the chain heating unit 40 and the straightening device 10 are further reduced in size by forming the conveying path of the fastener chain 1 in the chain heating unit 40 as short as one reciprocation up and down.

Further, in the chain cooling unit 50, a conveying path for the fastener chain 1 is formed by the fourth guide roller 11d to the seventeenth guide roller 11q and the dancer roller 61 so as to reciprocate the fastener chain 1 up and down seven times. Thus, by lengthening the conveyance path of the fastener chain 1 in the chain cooling unit 50, the tension is applied to the heated fastener chain 1, and the temperature is slowly and stably cooled to the glass transition temperature or lower, preferably to room temperature. It becomes possible.

The chain heating unit 40 is arranged adjacent to the downstream side of the chain supply unit 20. The chain heating unit 40 includes a housing part 41 serving as an outer shell, a panel-shaped infrared heater 42 disposed as a heat source inside the housing part 41, and a temperature control unit (not shown) that controls the temperature of the infrared heater 42. . The housing part 41 is formed in a rectangular parallelepiped shape that is long in the height direction, and an opening (not shown) serving as an entrance / exit of the fastener chain 1 to be conveyed is formed in the ceiling part (upper wall part) of the housing part 41. .

The panel-shaped infrared heater 42 is disposed so as to be sandwiched between the conveyance paths of the fastener chain 1 formed so as to reciprocate one up and down by the first guide roller 11a to the third guide roller 11c. The panel-shaped infrared heater 42 causes the fastener chain 1 to flow downward from the first guide roller 11a to the second guide roller 11b, and the fastener chain to flow upward from the second guide roller 11b to the third guide roller 11c. 1 and are heated.

By using such a panel-shaped infrared heater 42, the inside of the fastener element 5 can be efficiently heated. Further, since the infrared heater 42 can be installed in an elongated state sandwiched by a conveyance path that reciprocates up and down, the fastener chain 1 that flows from the first guide roller 11a to the third guide roller 11c via the second guide roller 11b is provided in a predetermined manner. Stable heating up to temperature.

Furthermore, in this embodiment, the chain heating unit 40 can be installed in a small space, and the space saving of the chain heating unit 40 and the space saving of the entire correction device 10 can be realized. In the present invention, instead of the infrared heater 42, a medium wavelength carbon heater can be used as a heat source of the chain heating unit 40.

In this case, the chain heating unit 40 uses the material of the fastener element 5 when the temperature of the fastener chain 1 (particularly the temperature of the fastener element 5) is at least when the fastener chain 1 is carried out of the housing part 41 by the infrared heater 42. The fastener chain 1 can be heated so that the dyed fastener chain 1 has a glass transition temperature (70 ° C.) or higher and does not cause discoloration due to heating to 120 ° C. or lower. . Moreover, the chain heating part 40 is formed so that the fastener chain 1 can be heated by the infrared heater 42 at a temperature rising rate of 30 ° C./min or more. Thereby, the fastener chain 1 can be stably heated quickly to a predetermined temperature.

The chain cooling unit 50 is provided between the chain heating unit 40 and the chain transport unit 30. In the chain cooling section 50, the fastener chain 1 flowing in a zigzag manner from the fourth guide roller 11d to the seventeenth guide roller 11q is cooled by natural air cooling (natural cooling). Here, natural air cooling refers to cooling the fastener chain 1 by transporting it while exposing the fastener chain 1 to room temperature air in a state where no forced air is generated by a fan or the like. Neither passing through the cool air nor blowing cool air on the fastener chain 1 is performed.

If the chain cooling section 50 performs natural air cooling of the fastener chain 1 in this way, the chain cooling section 50 can be formed with a simple structure, and an increase in equipment cost can be suppressed. In this case, the chain cooling part 50 can cool the fastener chain 1 to the glass transition temperature or lower, preferably to room temperature (for example, 30 ° C. or lower) by natural air cooling, depending on the conveying speed of the fastener chain 1. It is formed with a long length.

The chain tension applying portion 60 has one dancer roller 61 that rotates in contact with the fastener chain 1. The dancer roller 61 is arranged at the position of the lower folded end in the meandering conveyance path of the fastener chain 1 in the chain cooling unit 50 in order to apply a load to the fastener chain 1 as a weight.

Since the dancer roller 61 is arranged as described above, the drive conveyance roller 32 of the chain conveyance unit 30 and the portion of the fastener chain 1 sandwiched between the drive supply roller 22a and the supply pressure contact roller of the supply roller unit 22 and The tension in the direction in which the fastener chain 1 is extended can be stably applied to the entire portion sandwiched between the conveying pressure rollers.

In this chain tension applying portion 60, the magnitude of the tension received by the fastener chain 1 can be changed by changing the weight of the dancer roller 61. For example, in the present embodiment, the dancer roller 61 has a weight of 2 kg or more. A load, preferably a load of 4 kg or more is applied to the fastener chain 1.

Further, in this embodiment, the dancer roller 61 is disposed near the chain heating unit 40 on the conveyance path of the fastener chain 1 flowing through the chain cooling unit 50. More specifically, the dancer roller 61 according to the present embodiment has a reciprocating path closest to the chain heating part 40 among the seven reciprocating paths reciprocating up and down in the chain cooling part 50 (that is, after the chain heating part 40). A reciprocating path formed between the fourth guide roller 11d that passes first and the next fifth guide roller 11e) is disposed at the lower folded end.

Since the dancer roller 61 is arranged in the region of the chain cooling unit 50 described above, the dancer roller 61 is less affected by the heating by the infrared heater 42 of the chain heating unit 40, and thus the durability of the dancer roller 61 can be improved. .

Further, the dancer roller 61 is disposed in the reciprocating path of the fastener chain 1 closest to the chain heating unit 40 in the region of the chain cooling unit 50, whereby the dancer roller 61 causes the fastener chain to flow through the chain cooling unit 50. 1 and the fastener chain 1 flowing through the chain heating unit 40 can be stably applied with a tension, and a large tension can be more effectively applied to the fastener chain 1 flowing through the chain heating unit 40. By applying a large tension to the fastener chain 1 flowing through the chain heating unit 40 in this way, the heated fastener chain 1 is efficiently extended, and the curved fastener chain 1 is returned to a straight form at an earlier stage. be able to.

In the present invention, the chain tension applying portion 60 does not include the dancer roller 61 as described above. For example, a contact roller that rotates in contact with the fastener chain and can be displaced in the vertical direction, and a height of the contact roller. You may have a height position control part which can give a predetermined load to the fastener chain 1 by controlling a height position.

The chain collection part 70 is formed by a prismatic or columnar box having an upper end opened. Since the chain collection unit 70 is arranged below the chain conveyance unit 30, the fastener chain 1 discharged from the chain conveyance unit 30 is dropped by its own weight, so that the chain heating unit 40 and the chain cooling unit 50 are removed. The passed fastener chain 1 can be easily recovered.

Next, a correction process for correcting the form of the fastener chain 1 is performed on the fastener chain 1 having the curved curl as shown in FIG. The method to perform is demonstrated.
In the present embodiment, the fastener chain 1 in which the curl is generated is wound around the drum 8 as described above, and the drum 8 is held by the drum holding portion 21 of the correction device 10.

Therefore, when the correction processing of the fastener chain 1 is performed, first, the drive supply roller 22a of the supply roller portion 22 is rotationally driven at a predetermined rotational speed, whereby the fastener chain 1 is continuously pulled out from the drum 8, and the fastener The chain 1 is sent to the chain heating unit 40 and the chain cooling unit 50 via the supply unit guide roller 23.

At the same time, the chain drive unit 30 pulls in the fastener chain 1 supplied from the chain supply unit 20 by rotating the drive conveyance roller 32 of the chain conveyance unit 30 at a predetermined rotational speed. As a result, the fastener chain 1 is moved from the supply roller unit 22 to the chain transport unit 30 along a zigzag transport path formed by the first guide roller 11a to the 17th guide roller 11q and the dancer roller 61. Transport at the transport speed. Further, at this time, a predetermined amount of tension is applied to the fastener chain 1 conveyed from the chain supply unit 20 to the chain conveyance unit 30 by the dancer roller 61 of the chain tension applying unit 60.

In addition, when starting the correction process by the correction device 10, the dummy tape body or the fastener chain is preliminarily passed from the chain supply unit 20 to the chain transfer unit 30 along the zigzag transfer path, At the rear end of the dummy tape body, the front end of the fastener chain 1 with the curl is connected. Accordingly, the drive supply roller 22a of the supply roller unit 22 and the drive conveyance roller 32 of the chain conveyance unit 30 are rotationally driven, so that the fastener chain 1 is moved along the zigzag conveyance path following the dummy tape body. And can be conveyed stably, and correction processing can be performed on the entire length of the fastener chain 1.

Subsequently, the fastener chain 1 supplied from the supply roller portion 22 passes through the supply portion guide roller 23 and the first guide roller 11 a and is introduced into the housing portion 41 of the chain heating portion 40. At this time, the fastener chain 1 is carried into the housing portion 41 so that the element row 3 reciprocates in a direction facing the infrared heater 42 in order to efficiently heat the fastener element 5.

Further, in the housing part 41 of the chain heating part 40, the fastener chain 1 is along a conveyance path formed by the first guide roller 11a to the third guide roller 11c in a state where tension is applied by the dancer roller 61. Then, it flows so as to reciprocate once in the vertical direction, and is heated by a panel-shaped infrared heater 42 disposed between the reciprocating conveyance paths.

At this time, the temperature of the fastener element 5 when the fastener chain 1 is carried out of the housing part 41 at least by the infrared heater 42 is the glass transition temperature (70 ° C.) of the polyester that is the material of the fastener element 5. Heating is performed so that the temperature is 120 ° C. or lower, preferably 80 ° C. or higher and 110 ° C. or lower.

In this case, the temperature of the infrared heater 42 is set higher than the temperature of the fastener element 5 to be heated. Moreover, the temperature of the fastener element 5 to be heated can be measured using, for example, a non-contact thermometer using a laser.

As described above, the fastener chain 1 is heated at a predetermined temperature of 70 ° C. or more by the infrared heater 42 in a state where tension is applied in the housing portion 41 of the chain heating portion 40, so that the curved shape is obtained. The fastener chain 1 can be extended to eliminate (or reduce) the distortion (bending) of the fastener tape 4 and correct the straight shape. Thereby, the element intervals having different sizes between the left and right element rows 3 can be aligned with each other.

Furthermore, by setting the heating temperature of the fastener chain 1 to 120 ° C. or less, it is possible to effectively prevent the dyed fastener chain 1 from being discolored by heating and the dyeing fastness of the fastener chain 1 from being lowered. Moreover, it can also prevent that the shape of the fastener element 5 collapses by heating.

In particular, in this embodiment, the fastener chain 1 is efficiently heated at a temperature increase rate of, for example, 30 ° C./min or more by the infrared heater 42 while the fastener chain 1 is conveyed at a short conveyance distance of one reciprocation up and down. The chain 1 can be quickly heated to a predetermined temperature, and the shape of the fastener chain 1 can be extended straight at a relatively early stage. Thereby, since the distance which the fastener chain 1 is conveyed from the supply roller part 22 in a curved state can be shortened as a result, conveyance of the fastener chain 1 can be stabilized more.

Next, the fastener chain 1 stretched straight in the chain heating unit 40 passes through the third guide roller 11c and the fourth guide roller 11d, and then is conveyed to the chain cooling unit 50 and cooled.
In the chain cooling section 50, the dancer roller is moved while the fastener chain 1 is conveyed along a conveyance path that is formed by the fourth guide roller 11 d to the seventeenth guide roller 11 q and the dancer roller 61 and reciprocates in a zigzag manner seven times. In a state where the tension is applied by 61, the glass is cooled to at least the glass transition temperature or less by natural air cooling. In this case, the fastener chain 1 is preferably cooled at a cooling rate greater than 0 ° C./min and less than or equal to 60 ° C./min by the chain cooling unit 50.

In the chain cooling unit 50 of the present embodiment, the fastener tape 1 is slowly (slowly) cooled by natural air cooling in a state where tension is applied while transporting the fastener chain 1 with a long transport distance of seven reciprocations up and down. And the element row 3 is abruptly shrunk to cause shrinkage spots on the fastener chain 1, and the amount of heat shrinkage of the fastener tape 4 and the element row 3 in the length direction and the width direction of the fastener chain 1 is varied. It can be made difficult to generate.

Thereby, the form of the fastener chain 1 extended straight by the front chain heating part 40 can be maintained, and the straight form can be stably fixed. Further, it is possible to prevent the element interval of the element row 3 from being shifted between the left and right element rows 3.
Thereafter, the fastener chain 1 cooled to the glass transition temperature or lower (particularly to room temperature) by the chain cooling unit 50 is discharged from the chain conveying unit 30 and collected by the chain collecting unit 70.

As described above, the fastener chain 1 is obtained by performing the correction process on the fastener chain 1 in which the curved curl is generated by performing the dyeing process with the supercritical fluid using the correction device 10 of the present embodiment. Thus, the dyed fastener chain 1 having a straight shape as shown in FIG. 2 can be stably obtained.

In particular, in the present embodiment, in the chain cooling section 50, the fastener chain 1 is slowly cooled while being applied with a long conveying distance, so that the amount of heat shrinkage of the fastener chain 1 is restricted, and the left and right element rows 3 The element interval can be adjusted to a constant size over the entire tape length direction. Thereby, since the dimension of the element row | line 3 is stabilized over the whole fastener chain 1, the dimensional accuracy of the fastener chain 1 can be improved.

In this embodiment, the element spacing of the element row 3 can be changed (or adjusted) depending on the magnitude of tension applied to the fastener chain 1. For example, the fastener chain 1 is straightened under various conditions in advance, and data is obtained for each processing condition such as the conveyance speed of the fastener chain 1, the magnitude of the tension applied by the dancer roller 61, and the heating temperature of the chain heating unit 40. By collecting and accumulating, it is possible to perform corrective processing by appropriately setting processing conditions based on the accumulated data, whereby the element interval of the element row 3 in the fastener chain 1 is set to a predetermined value. It becomes possible to adjust the size easily and stably.

DESCRIPTION OF SYMBOLS 1 Fastener chain 2 Fastener stringer 3 Element row 4 Fastener tape 5 Fastener element 6 Sewing thread 8 Drum 10 Correction device 11 Guide roller 11a-11q 1st-17th guide roller 12 Upper frame 13 Lower frame 20 Chain supply part 21 Drum holding part 21a base part 21b support roller part 22 supply roller part 22a drive supply roller 23 supply part guide roller 30 chain transport part 31 transport part guide roller 32 drive transport roller 40 chain heating part 41 housing part 42 infrared heater 50 chain cooling part 60 chain tension Additional part 61 Dancer roller 70 h Over down recovery unit

Claims

When the dyeing process using the supercritical fluid is performed in a state of being wound around the drum (8), the curl of the fastener chain (1) for the slide fastener after dyeing that has been curled due to heat is removed. Therefore, in the fastener chain straightening device (10) for straightening the form of the fastener chain (1),
A chain supply section (20) for supplying the fastener chain (1) in which the curl has occurred; and
A chain transport unit (30) disposed downstream of the chain supply unit (20) and configured to transport the fastener chain (1) from the chain supply unit (20) along a transport path at a predetermined transport speed;
A chain heating section (40) disposed between the chain supply section (20) and the chain transport section (30) and heating the fastener chain (1) on the transport path;
A chain cooling section (50) disposed between the chain heating section (40) and the chain transport section (30) and cooling the fastener chain (1) after heating on the transport path;
A chain tension applying part (60) for applying tension to the fastener chain (1) flowing through the chain heating part (40) and the chain cooling part (50);
A device for correcting a fastener chain, comprising:
Between the chain supply unit (20) and the chain transport unit (30), a plurality of guide rollers (11) that meander the transport path of the fastener chain (1) in a zigzag manner,
The transport distance of the fastener chain (1) transported in the chain heating section (40) is set shorter than the transport distance of the fastener chain (1) transported in the chain cooling section (50).
The fastener chain straightening device according to claim 1.
The chain heating unit (40) has a heat source disposed between the meandering conveyance path,
The heat source is formed such that the fastener chain (1) can be heated at a temperature rising rate of 30 ° C./min or more.
The fastener chain straightening device according to claim 2.
The fastener chain straightening device according to claim 3, wherein the heat source is a panel-shaped infrared heater (42).
The chain heating section (40) is formed to be able to heat the fastener chain (1) to a temperature not lower than the glass transition temperature of the synthetic resin forming the fastener element (5) of the fastener chain (1) and not higher than 120 ° C. The fastener chain straightening device according to any one of claims 1 to 4.
The fastener chain according to any one of claims 1 to 5, wherein the chain cooling section (50) is formed so as to be cooled to at least a glass transition temperature or less by natural air cooling while conveying the fastener chain (1). Straightening device.
The chain tension applying part (60) has a dancer roller (61) for applying a load to the fastener chain (1),
The dancer roller (61) is disposed at a position near the chain heating unit (40) of the transport path in the chain cooling unit (50).
The fastener chain straightening device according to any one of claims 1 to 6.
When the dyeing process using the supercritical fluid is performed in a state of being wound around the drum (8), the curl of the fastener chain (1) for the slide fastener after dyeing that has been curled due to heat is removed. Therefore, in the fastener chain correcting method for correcting the form of the fastener chain (1),
Supplying the fastener chain (1) where the curl has occurred and transporting it at a predetermined transport speed;
Heating the supplied fastener chain (1) by a chain heating section (40) while being conveyed;
Cooling the heated fastener chain (1) with a chain cooling part (50) while being conveyed; and
A method for correcting a fastener chain, comprising applying tension to the fastener chain (1) flowing through the chain heating part (40) and the chain cooling part (50).
Conveying the fastener chain (1) while meandering in a zigzag manner; and
Including making the conveyance distance of the fastener chain (1) conveyed in the chain heating section (40) shorter than the conveyance distance of the fastener chain (1) conveyed in the chain cooling section (50). The method for correcting a fastener chain according to claim 8.
In the chain heating section (40), the fastener chain (1) is heated at a temperature rising rate of 30 ° C./min or more, and the glass transition temperature of the synthetic resin forming the fastener element (5) of the fastener chain (1) The method for correcting a fastener chain according to claim 8 or 9, comprising heating to a temperature of 120 ° C or lower.
The fastener chain according to any one of claims 8 to 10, further comprising cooling the fastener chain (1) by at least a glass transition temperature or less by natural air cooling while conveying the fastener chain (1) in the chain cooling section (50). Correction method.