WO2023171616A1 - Fermeture à boucles et crochets en tissu à base de polyester ayant une section d'oreille - Google Patents

Fermeture à boucles et crochets en tissu à base de polyester ayant une section d'oreille Download PDF

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Publication number
WO2023171616A1
WO2023171616A1 PCT/JP2023/008341 JP2023008341W WO2023171616A1 WO 2023171616 A1 WO2023171616 A1 WO 2023171616A1 JP 2023008341 W JP2023008341 W JP 2023008341W WO 2023171616 A1 WO2023171616 A1 WO 2023171616A1
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Prior art keywords
hook
base fabric
loop
loop fastener
engagement element
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PCT/JP2023/008341
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English (en)
Japanese (ja)
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卓 相良
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クラレファスニング株式会社
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Publication of WO2023171616A1 publication Critical patent/WO2023171616A1/fr

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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners

Definitions

  • the present invention relates to a hook-and-loop fastener, a loop-and-loop fastener, or a hook and loop hook-and-loop fastener made of a woven fabric made of polyester yarn, which is present on the surface of the area for the ears.
  • the present invention relates to a polyester fabric hook-and-loop fastener having ears at both ends, in which ears are formed by cutting and removing engaging elements in post-processing, and a method for manufacturing the same.
  • a so-called textile-based hook-and-loop fastener has a large number of hook-like engaging elements made of monofilament yarn on the surface of a textile base fabric, and a hook-like engaging element that can engage with the hook-like engaging element.
  • a so-called woven loop hook and loop fastener which has a large number of loop-shaped engagement elements made of multifilament threads on the surface of a textile base fabric, even if the engagement and separation are repeated, the engagement elements will not be damaged, and the engagement force will be high. It is widely used as a bonding material in fields such as clothing, daily necessities, and industrial materials because of its low deterioration.
  • hook-and-loop woven fabric-based hook-and-loop fasteners in which a large number of both hook-like engaging elements and loop-like engaging elements are present on the same surface of a textile base fabric are also known. It is widely used because it can combine the functions of a fastener with one type of hook-and-loop fastener, and there is no need to use both hook and loop hook-and-loop fasteners like conventional hook-and-loop fasteners. There is.
  • the threads for the engaging elements are weaved parallel to the warp threads of the textile base fabric so that the threads for the engaging elements protrude from the surface of the textile base fabric in a loop shape at some places. and fixing the loop shape by applying heat, and then, if the engaging element is a hook-like engaging element, by cutting one leg of the loop to make the loop a hook-like engaging element.
  • the engagement element is a loop-shaped engagement element, it is manufactured without cutting one leg.
  • the textile base fabric is usually A urethane-based or acrylic-based resin agent called a back coat adhesive is applied to the back side of the cloth.
  • the adhesive layer on the back of the base fabric tends to lose the flexibility of the fabric base fabric and become rigid, resulting in the texture of the fabric to which the hook-and-loop fastener is attached to.
  • Another disadvantage is that the adhesive tends to deteriorate over time during use as a hook-and-loop fastener, and the fixing force of the thread for the engaging element gradually decreases, resulting in a decline in the engagement function of the hook-and-loop fastener.
  • a back coat adhesive is applied to the back side of the textile base fabric, when dyeing such a textile hook-and-loop fastener, the dye solution will penetrate through the textile base fabric due to the back coat adhesive layer existing on the back side. It cannot be dyed uniformly and in a deep color. Therefore, dyeing must be done before applying the backcoat adhesive. If dyeing is performed before applying the back coat adhesive, the threads for the engaging elements, etc. will be dyed without being fixed to the textile base fabric, so the threads that make up the textile base fabric will shift due to the dyeing process. etc., and the arrangement of the engaging elements becomes disordered.
  • the engagement element is a hook-shaped engagement element
  • only one leg may be cut when cutting one leg of the engagement element loop to create a hook-shaped engagement element. It becomes difficult to reliably amputate, and there are cases where both legs are amputated, and there are cases where both legs are not amputated.
  • hook-and-loop fasteners are generally manufactured in the form of a wide and long tape, and at the time of being sold as a product, the hook-and-loop fastener has a central portion in the width direction where the engaging element is present (engaging element area), It is in a narrow state consisting of ears that are present at both ends in the width direction and are substantially free of engaging elements.
  • These selvedges are provided to make sewing easier and look better when sewing the hook-and-loop fastener into the fabric, and their width is generally 1 to 1. The range is 5mm.
  • the ears become hard, making it difficult for a sewing needle to penetrate through the ears, making it difficult to attach by sewing.
  • a region having an engaging element loop corresponding to an engaging element region (an engaging element region) and a plurality of regions having no engaging element loops are prepared.
  • a wide base fabric for hook-and-loop fasteners is woven in which the ear areas are alternately arranged in the weft direction, and then heat treatment is performed to fix the shape of the engaging element, and one leg is cut to form a hook-like engaging element.
  • a method of simultaneously obtaining a plurality of narrow tape-shaped hook-and-loop fasteners having tabs at both ends in the width direction by processing and cutting (slit) approximately the middle of the edge area of a wide hook-and-loop fastener base fabric. is commonly used.
  • a method for manufacturing a narrow fabric hook-and-loop fastener with ears first, a wide fabric tape for hook-and-loop fasteners is produced, which has narrow engagement element areas and ear areas alternately in the width direction. From the viewpoint of productivity, a method is generally used in which a plurality of narrow hook-and-loop fastener tapes are then manufactured simultaneously by slitting the middle of the ear region parallel to the warp threads.
  • the engaging element loop should be designed to protrude by approximately 21 mm, which is the engaging element area, and be approximately 4 mm parallel to the engaging element area.
  • a wide woven fabric tape in which the selvedge region in which no engagement element thread is present is repeated multiple times in the weft direction is manufactured, and then approximately the middle part of the selvedge region of this wide tape is cut in the longitudinal direction ( By slitting parallel to the warp direction), a plurality of woven hook and loop fasteners each having a tape width of 25 mm and having an engaging element region of approximately 21 mm width and ears of approximately 2 mm at both ends thereof can be obtained at the same time.
  • the number of warps to be pre-wound for the warp yarns and the engaging element yarns is the same as the number of warps for each engaging element area width, so the number of warps to be wound on the dedicated beam is adjusted accordingly.
  • a large number of beams of warp threads and engagement element threads must be stocked.
  • Patent Document 1 discloses that a wide base fabric for hook-and-loop fasteners with engaging elements present on the entire surface of the base fabric is first woven, and then the engaging elements are cut off at predetermined intervals in the width direction. By forming the ear area, the wide engagement element area is divided into a plurality of narrow engagement element areas continuous in the length direction and a plurality of ear areas.
  • the ear part formation can be carried out after the manufacturing process of the hook-and-loop fastener, which reduces inventory during the manufacturing process, and also reduces the amount of work and time required to change the width of the engaging element area. It has the advantage that it can be shortened and does not require an increase in the number of warping beams or weaving devices.
  • Patent Document 1 discloses that by using a heat-shrinkable yarn containing a heat-sealing component as the weft constituting the base fabric, the base of the engagement element is fixed by the melt of the heat-sealing component, Furthermore, by tightening the base of the engagement element by utilizing the heat shrinkability of the same thread, the engagement element will not be pulled out from the base fabric even if engagement and peeling are repeated, and as a result, conventional hook-and-loop fasteners It is described that the conventional application of the back coat resin becomes unnecessary, and the above-mentioned problems caused by the presence of the back coat resin layer can be solved.
  • Patent Document 1 states that the warp, weft, and engagement element yarn are all polyester yarns, and their water absorption and hygroscopicity are extremely low. Unlike hook-and-loop fasteners, the hook-and-loop fastener base fabric rarely becomes wavy due to water absorption and moisture absorption by the nylon threads, so the cutting position when cutting the engaging elements to form ears is unstable. It is also stated that there is no problem that the engaging element is cut out, and therefore, there is almost no problem that the stub remains high or the base fabric is scraped off when the engaging element is cut out.
  • Patent Document 2 discloses a technique in which heat-shrinkable polyester yarns are used for the warp, weft, and engagement element threads, and the wefts are further constructed.
  • a hook-and-loop fastener in which the thread for the engaging element is fixed to the textile base fabric is created by using a thread containing a heat-fusible component as the thread for the engagement element, and by the fusing of the heat-fusible component and the heat shrinkage of all the threads constituting the hook-and-loop fastener.
  • the present invention solves the problems of the prior art as described above, namely, that a large number of weaving equipment and beam stocks of warp yarns and threads for engaging elements are required; This eliminates the need for a large amount of effort and time to switch tape widths, and also eliminates the need for large amounts of inventory during the process.
  • the hook-and-loop fastener When cutting off the element, it is extremely rare for the hook-and-loop fastener to become wavy in the vertical direction, and as a result, the hook-and-loop fastener has ears where the engaging element is precisely cut off near the base of the engaging element.
  • the present invention provides a fabric hook-and-loop fastener with ears, in which the pull-out resistance of the engaging element is greatly improved despite the absence of a back coat resin layer, and a method for manufacturing the same.
  • the present invention provides a base fabric that is a woven fabric composed of warp and weft yarns, both of which are polyester yarns, and engagement element threads woven parallel to the warp yarns, and a base fabric that is present on the surface side of the base fabric.
  • an engaging element having at least one shape selected from the group consisting of a large number of loop shapes and hook shapes rising from the surface of the base fabric, which is formed from an engaging element thread;
  • the weft contains a heat-fusion component,
  • the base of the engagement element is fixed to the base fabric by a heat-sealing component,
  • the thickness of the warp yarns which float up and down above and below the weft yarns, is the same thickness in the thickness direction of the base fabric at the point where it sinks the most toward the back side, and the same thickness at the point where it rises the most toward the front side. be less than 0.94 times the size of the
  • At least one of the ears present at both ends is formed by cutting and removing the root of the engagement element;
  • the present invention also provides a base fabric that is a woven fabric composed of a warp, an engagement element thread woven parallel to the warp, and a weft, both of which are polyester threads, and a surface side of the base fabric.
  • the weft contains a heat-fusion component
  • the base of the engagement element is fixed to the base fabric by a heat-sealing component
  • the thickness of the warp threads in the thickness direction of the base fabric at the part where the warp threads are sunk the most on the back side is the same as the thickness at the part where the warp threads are most raised on the front side.
  • the thickness is 0.7 to 0.90 times the same thickness.
  • a back coat resin layer for fixing the engaging elements to the base fabric is not present on the back surface of the base fabric.
  • the pulling force of the engaging element from the base fabric is 5.5 N or more.
  • the fabric hook-and-loop fastener is dyed with a disperse dye.
  • the present invention also provides a base fabric that is a fabric woven from warp and weft yarns, both of which are heat-shrinkable polyester yarns, and an engaging element yarn, and a base fabric in which the engaging element yarn stands up from the surface of the base fabric.
  • Step 1 A base fabric in which threads for engagement elements are woven parallel to the warp threads, and on the surface side of the base fabric, there are many engagement elements formed from the threads for engagement elements and rising from the surface of the base fabric.
  • the process of weaving the base fabric in which the loop is present [Step 2] A step in which the base fabric is introduced into a heating region and heated to a temperature higher than the temperature at which the heat-sealing component melts, thereby causing the threads constituting the base fabric to thermally shrink, and allowing the melt from the weft to permeate the base fabric; [Step 3] Taking out the base fabric from the heating area and pressing the back side of the base fabric against a fixed surface or roll surface while the heat-sealing component is melted, [Step 4] After cooling the base fabric, if the loop for the engagement element existing on the surface of the base fabric is for a hook-shaped engagement element, cut one leg of the loop to make it into a hook shape.
  • a step of forming an engaging element [Step 5] The engagement element is removed by cutting the vicinity of the base of the engagement element continuously in the warp direction of the base fabric and at predetermined intervals in the weft direction of the base fabric, thereby eliminating the presence of the engagement element. a step of continuously forming a region for an ear portion and an engaging element region that are not formed in the warp direction of the base fabric; [Step 6] By cutting approximately the middle part in the weft direction of the selvage region in the warp direction to form an selvage, the base fabric has selvages at both ends in the weft direction and a plurality of engaging element regions are formed in the warp direction of the base fabric.
  • the present invention includes a base fabric that is a fabric woven from warp, weft, and engagement element threads, which are all heat-shrinkable polyester threads, and a base fabric in which the engagement element threads stand up from the surface of the base fabric.
  • a method for manufacturing a polyester hook-and-loop fastener wherein the base of an engaging element rising from the surface of a base fabric is fixed to the base fabric by fusion of a heat-sealing component, the method comprising: This is a method for manufacturing a polyester fabric hook-and-loop fastener having ears, characterized in that the above-mentioned [Step 1] to [Step 6] are performed in this order.
  • [Step 3] is a method in which the back side of the base fabric is pressed against a fixed surface and the base fabric runs while sliding on the same surface, and the running direction of the base fabric is changed on the fixed surface.
  • [Step 3] is preferably carried out using the residual heat of [Step 2] following [Step 2] without once cooling the base fabric taken out from [Step 2]. This is the case.
  • [Step 1] to [Step 4] are performed continuously without winding up in the middle.
  • [Step 3] is performed without pressing the surface side of the base fabric against a fixed surface or a roll surface.
  • the warp used in the fabric has a dry heat shrinkage rate at 180°C of 5 to 20%, and the weft and the engaging element yarn have a dry heat shrinkage rate of 180°C of 5 to 20%. This is the case when both dry heat shrinkage rates are in the range of 15 to 30%.
  • the fabric surface fastener is dyed with a disperse dye between [Step 5] and [Step 6] or after [Step 6].
  • the hook-and-loop fastener of the present invention is composed of polyester threads, the hook-and-loop fastener base fabric is less prone to vertical waving due to water absorption and moisture absorption, compared to conventional hook-and-loop fasteners made of nylon threads.
  • the problem of leaving a high stump due to the variation in cutting height due to the waving, or conversely, the problem of the surface of the base fabric being cut out can be solved.
  • the present invention uses polyester yarns containing a heat-sealing component as the weft and warp yarns, so new heat shrinkage of these constituent yarns results in surface Waving occurs in the vertical direction of the zipper base fabric, and this causes the stubs to remain tall due to variations in cutting height due to the waving when forming the region for the ears, or conversely, the surface of the base fabric is scraped off.
  • Step 3 the step of pressing the back side of the base fabric against a fixed surface or a roll surface while the heat-sealing component is melted.
  • a polyester yarn containing a heat-fusible component is used as the weft, and the warp, weft, and engagement element yarn (these yarns may be collectively referred to as hook-and-loop fastener component yarn) Since heat-shrinkable polyester threads are used, additional heat shrinkage of these constituent threads causes vertical undulation of the hook-and-loop fastener base fabric, which causes the selvedge area to be formed. New problems such as the stump remaining tall due to the variation in the cutting height due to the waving and the surface of the base fabric being scraped off occur in the above-mentioned [Step 3], that is, the heat-sealing component is melted. This problem is solved by pressing the back side of the base fabric against a fixed surface or roll surface.
  • the base of the engaging element can be reliably cut at a height that is almost flush with the surface of the base fabric. It does not cause the problem of being scraped off.
  • the hook-and-loop fastener base fabric does not have vertical undulations, when dyeing the hook-and-loop fastener with a disperse dye solution, drifting of the dye solution is less likely to occur, resulting in a uniform color tone with no staining spots.
  • the threads that make up the hook-and-loop fastener are all heat-shrinkable threads, the base of the engaging element is firmly tightened, and the threads for the engaging element are bonded to the base fabric by the fusion of the heat-sealing component.
  • the thread for the engagement element is pressed against the heat-sealing component, and the melt of the heat-sealing component is pushed out by the pressure and penetrates into the adjacent threads, increasing the bonding force.
  • the engaging element is firmly fixed to the textile base fabric, so even if the hook-and-loop fastener is repeatedly engaged and peeled off, the engaging element is hardly ever pulled out from the base fabric.
  • the hook and loop fastener of the present invention does not require the application of back coat resin liquid to the back side of the hook and loop fastener base fabric, so the back coat resin reduces the flexibility of the hook and loop fastener.
  • the back coat resin reduces the flexibility of the hook and loop fastener.
  • There will be no problems such as damage or lack of stability of the backcoat resin liquid, and furthermore, when applying and drying the backcoat resin liquid, the work environment will not be deteriorated due to solvent vapor from the same resin liquid, or the work environment will not be affected by the coating and drying process.
  • the ears are formed by cutting off the engaging elements after weaving the weave in a wide width, it is excellent in quick delivery.
  • it requires equipment for weaving hook-and-loop fasteners, a large number of beam stocks for warp yarns and threads for engaging elements, and it takes a great deal of effort and time to change the tape width. This does not cause the problem of large inventories in intermediate processes.
  • FIG. 1 is a schematic perspective view of an example of a hook-and-loop fastener having ears according to the present invention.
  • FIG. 2 is a schematic perspective view of an example of the hook-and-loop fastener of the present invention before cutting approximately the middle portion of the ear region.
  • FIG. 2 is a diagram schematically showing an example of a heat treatment apparatus used in heat treatment suitably used when manufacturing a hook-and-loop fastener having ears according to the present invention.
  • FIG. 2 is a diagram schematically showing a cross section of a textile base fabric in a plane parallel to the warp when [Step 3] is performed in a preferred example of a hook-and-loop fastener having ears according to the present invention. It is a figure which shows typically the cross section in the plane parallel to the warp of the textile base fabric of the hook-and-loop fastener which has an edge part when [Step 3] is not performed.
  • the polyester hook-and-loop fastener of the present invention can be roughly divided into hook-and-loop fasteners in which only hook-shaped engagement elements are present on the surface of a textile base fabric, and hook-and-loop fasteners in which only hook-shaped engagement elements are present on the surface of a textile base fabric.
  • hook-and-loop type hook-and-loop fasteners There are three types of hook-and-loop type hook-and-loop fasteners: a hook-and-loop hook-and-loop type hook-and-loop fastener in which hook-like engaging elements and loop-like engaging elements coexist on the surface of a textile base fabric.
  • the hook surface fastener is mainly formed from monofilament yarn for the hook-shaped engagement element, multifilament yarn for the warp, and multifilament yarn for the weft.
  • the loop surface fastener is mainly formed from multifilament yarns for loop-shaped engagement elements, multifilament yarns for warp yarns, and multifilament yarns for weft yarns.
  • hook-and-loop coexistence type surface fasteners in which hook-like engagement elements and loop-like engagement elements coexist on the same surface mainly include monofilament yarn for hook-like engagement elements, multifilament yarn for loop-like engagement elements, It is formed from multifilament yarns for warp and multifilament yarn for weft.
  • These hook-and-loop fasteners may or may not be woven with threads other than those mentioned above, if necessary, if only in small amounts.
  • the warp and weft are bonded by heat fusion to prevent waving (a condition in which the base fabric surface of the hook-and-loop fastener goes up and down irregularly and does not form a horizontal surface) due to water absorption and moisture absorption.
  • Polyester threads are used in clothing and daily necessities because they can firmly bond the threads together and prevent the threads from yellowing during the heat fusing process.
  • the attached hook-and-loop fastener can also be dyed in the same color at the same time, so it is necessary that the product is substantially made of polyester resin. From this point of view, it is preferable that the warp, weft, and engagement element yarn are substantially made of polyester resin.
  • the warp is preferably a multifilament yarn made of polyethylene terephthalate-based polyester
  • the hook-like engagement element yarn is preferably made of polyethylene terephthalate-based polyester.
  • a monofilament yarn consisting of polybutylene terephthalate polyester is preferably used as the yarn for the loop-shaped engagement element, and a polyester multifilament yarn is preferably used as the weft.
  • the polyethylene terephthalate-based polyester suitably used for the warp threads and the thread for the hook-like engagement element is a polyester having ethylene terephthalate units as repeating units, and preferably a polyester obtained by a condensation reaction from terephthalic acid and ethylene glycol. A small amount of copolymerized units other than terephthalic acid and ethylene glycol may be added. Furthermore, a small amount of other polymers may be added to the polyester.
  • the weft is also a polyester thread, specifically a polyester-based low melting point heat-fusible resin (sometimes referred to as a heat-fusible component), which constitutes the warp and hook-shaped engagement elements. It is necessary that the thread contains polyester resin, which has a much lower melting point than polyethylene terephthalate resin, and low melting point heat-fusible resins include terephthalic acid and ethylene glycol to lower the melting point. , polyethylene terephthalate or polybutylene terephthalate polyesters copolymerized with a large amount of copolymer components other than butanediol, such as isophthalic acid and diethylene glycol, are preferably used.
  • the yarn for the loop-shaped engagement element is also preferably a polyester yarn, with particular preference given to yarns made of polybutylene terephthalate polyester in terms of excellent dyeability, flexibility, ability to form round loops, and ability to retain such round loop shapes. is preferably used, but polyethylene terephthalate polyester may also be used.
  • a loop-shaped engagement element made of polybutylene terephthalate-based polyester or polyethylene terephthalate-based polyester is present, the heat-fusible resin used for the weft is not used for the loop-shaped engagement element. It is necessary that the melting point is considerably lower than the melting point of polybutylene terephthalate polyester and polyethylene terephthalate polyester.
  • the warp and weft may be yarns (fibers) that assist the above functions, such as polyphenylene sulfide (hereinafter abbreviated as PPS) fiber, polyetherimide fiber (hereinafter abbreviated as PEI), within a range that satisfies the effects of the present invention.
  • PPS polyphenylene sulfide
  • PEI polyetherimide fiber
  • Yarns such as polyamide fibers may be used together with polyester yarns.
  • a thread (fiber) depending on the function can be used instead of the polyester thread or together with the resin of the polyester thread.
  • the engagement element thread is preferably made of polyester resin. Examples of the fibers include PPS fibers, PEI fibers, polyamide fibers, and the like.
  • the warp, weft, and thread for the engaging element used in manufacturing the hook-and-loop fastener all have heat shrinkability in order to prevent the engaging element from being pulled out from the base fabric.
  • the 180°C dry heat shrinkage rate of the warp yarn is in the range of 5 to 20%
  • the 180°C dry heat shrinkage rate of the weft yarn and the engaging element yarn are both in the range of 15 to 30%. The reason why the dry heat shrinkage rate of warp yarns is lower than that of other yarns is to stabilize the weaving process.
  • the 180° C. dry heat shrinkage rate defined in the present invention is the value obtained by leaving 50 cm of yarn in a free state in a 180° C. atmosphere for 1 minute, and obtaining the shrinkage rate from the shrunk yarn after 1 minute.
  • synthetic fiber manufacturers sell yarns with various dry heat shrinkage rates, but general-purpose products can achieve a dry heat shrinkage rate of 180°C by sufficiently heat-setting during the manufacturing process.
  • Many products have a low shrinkage rate, which minimizes shrinkage and wrinkles during ironing and high-temperature, high-pressure dyeing, so they have the high shrinkage rate mentioned above, which is different from general-purpose products. It is preferable to choose something.
  • the thickness of the multifilament yarn constituting the warp it is preferable to use a multifilament yarn having a total decitex of 80 to 180 decitex consisting of 18 to 38 filaments, particularly a total decitex of 90 decitex consisting of 24 to 37 filaments. Multifilament yarns of ⁇ 170 decitex are preferred.
  • the thickness of the multifilament yarn constituting the weft it is preferable to use a multifilament yarn with a total decitex of 150 to 300 decitex consisting of 32 to 64 filaments, particularly a total decitex of 180 to 180 decitex consisting of 40 to 56 filaments. Multifilament yarns that are 250 decitex are preferred.
  • the weft yarn must contain a low melting point polyester, that is, a heat-fusible component.
  • a typical example of a multifilament yarn containing such a heat-fusible component is a multifilament yarn consisting of a core-sheath type heat-fusible filament whose sheath component is a low-melting polyester (that is, a heat-fusible component). Because the weft yarn contains a heat-sealable component, it is possible to fix the thread for the hook-shaped engagement element to the textile base fabric, and the thread for the engagement element can be pulled out from the textile base fabric as in conventional hook-and-loop fasteners. There is no need to apply a polyurethane-based or acrylic-based back coat adhesive to the back side of the hook-and-loop fastener base fabric to prevent it from being damaged.
  • the multifilament yarn made of the above-mentioned core-sheath type heat-fusible filament is a multifilament yarn made of a polyester filament having a core-sheath type cross section in which the core component does not melt under heat treatment conditions but the sheath component melts. Can be mentioned.
  • polyethylene terephthalate homopolymer is used as a core component, and a large amount of copolymer components such as isophthalic acid and adipic acid are copolymerized, for example, 20 to 30 mol %, so that the melting point or softening point (mainly In the present invention, copolymerized polyethylene terephthalate or copolymerized polybutylene terephthalate with a significantly lowered softening point (when crystals are not formed due to copolymerization etc. and a softening point exists instead, such softening point is referred to as melting point) is used.
  • a typical example is a multifilament yarn consisting of a core-sheath polyester filament as a sheath component.
  • the melting point of the sheath component of the multifilament yarn made of core-sheath type polyester heat-fusible filaments is in the range of 130 to 210°C, and the melting point of the sheath component is in the range of 130 to 210°C, and The temperature is preferably 20 to 150° C. lower than the melting point of the multifilament yarn for the engagement element.
  • the cross-sectional shape of the sheath-core type heat-fusible filament may be a concentric sheath-core, an eccentric sheath-core, a sheath-core single core, or a sheath-core multicore. Preferably this is the case with a single core/sheath composite component.
  • the proportion of polyester core-sheath heat-fusible filaments in the weft is particularly important when all of the wefts are substantially made of core-sheath polyester heat-fusible filaments, that is, the weft is
  • the weft is In the case of a multifilament yarn made of sheath-type polyester heat-fusible filaments, both the hook-shaped engagement element yarn and the loop-shaped engagement element yarn are firmly fixed to the base fabric. Therefore, it is preferable.
  • the heat-fusible filament contains a resin that is not heat-fused, and it is particularly preferable that the filament has a core-sheath cross-sectional shape.
  • the weight ratio of the core component to the sheath component is preferably in the range of 85:15 to 40:60, particularly in the range of 80:20 to 60:40.
  • the hook-shaped engagement element is required to have so-called hook shape retention and rigidity so that the hook shape is not stretched by a light force, and for this reason, thick monofilament thread is used.
  • the monofilament yarn is formed from a polyethylene terephthalate homopolymer that has excellent hook shape retention properties, and which does not melt at the temperature used to heat-seal the heat-fusible multifilament yarn but shrinks when heated. More preferably, a monofilament yarn having the above-mentioned dry heat shrinkage rate is used.
  • the thickness of the monofilament thread for such a hook-shaped engagement element is preferably 0.15 to 0.22 mm in diameter from the viewpoint of engagement force, and more preferably 0.16 to 0.20 mm in diameter.
  • the monofilament may have an irregular cross-sectional shape represented by a polygonal shape such as a triangle or a square.
  • the yarn for the loop-shaped engagement element is preferably composed of polyethylene terephthalate-based or polybutylene terephthalate-based polyester, and does not melt at the temperature at which the heat-fusible multifilament yarn is heat-fused;
  • multifilament yarn made of polybutylene terephthalate-based polyester can highly prevent uneven shrinkage of the hook-and-loop fastener during heat treatment and dyeing processes, resulting in vertically wavy shapes of the hook-and-loop fastener.
  • the yarn for the loop-shaped engagement element is more preferably a multifilament yarn made of polybutylene terephthalate containing 1 to 8% by weight of polytrimethylene terephthalate.
  • the filaments that make up the loop-shaped engagement element easily come apart, and furthermore, when the filaments that make up the multifilament yarn are treated to make them break apart using clothing, etc., the filaments that make up the multifilament yarn can be cut by such treatment. Furthermore, even if engagement and separation are repeated, it is difficult to break, and as a result, the engagement strength is improved. Furthermore, deep color dyeing is possible under mild dyeing conditions using disperse dyes.
  • the thickness of the multifilament yarn constituting the yarn for the loop-shaped engagement element it is preferable to use a multifilament yarn having a total decitex of 250 to 380 decitex consisting of 6 to 12 filaments, particularly a yarn consisting of 7 to 10 filaments.
  • a multifilament yarn having a total decitex of 280 to 350 decitex is preferred.
  • such a multifilament yarn for a loop-shaped engagement element needs to undergo heat shrinkage under the conditions for fusing the heat-fusible multifilament yarn of the weft.
  • steps 1 to 6 are performed in this order to produce a woven surface fastener.
  • step 1 is a base fabric in which engaging element threads are woven parallel to the warp, and on the surface side of the base fabric, a large number of threads are formed from the engaging element threads and stand up from the surface of the base fabric.
  • a step of weaving a base fabric for a hook-and-loop fastener in which loops for engaging elements are present is performed.
  • the weave structure of the fabric is preferably a plain weave in which monofilament yarn for hook-shaped engagement elements or multifilament yarn for loop-shaped engagement elements is part of the warp.
  • These engaging element threads are woven parallel to the warp threads, rise from the fabric surface in the middle of the weaving, and in the case of hook-shaped engaging elements, jump over one to three warp threads while forming a loop.
  • a loop-shaped engaging element a loop is formed at a point where the warp threads are not straddled or one warp thread is straddled, and the engaging element loop exists parallel to the warp threads.
  • a woven structure is preferable because it allows efficient cutting of one leg side of the loop for the hook-like engagement element, and also because it facilitates engagement between the hook-like engagement element and the loop-like engagement element.
  • the weave density of the warp is preferably 35 to 80 threads/cm after heat treatment, and the weave density of the weft is preferably 12 to 30 threads/cm after heat treatment.
  • the weight ratio of the weft yarn is preferably 15 to 40% of the total weight of the hook-like engaging element yarn, loop-like engaging element yarn, warp yarn, and weft yarn constituting the hook-and-loop fastener.
  • the height of the hook-like engaging elements is 1.2 to 1.8 mm from the surface of the textile base, and the height of the loop-like engaging elements is from the surface of the textile base.
  • a range of 1.9 to 3.0 mm is preferable from the viewpoint of engagement force and the difficulty of the engagement element falling down.
  • the density of hook-like engaging elements in a hook-and-loop fastener is as follows:
  • the number is 30 to 70 pieces/cm 2 , 30 to 70 pieces/cm 2 , and 60 to 100 pieces/cm 2 , based on the woven base fabric portion where the engaging elements are present and based on the width after heat shrinkage.
  • the ratio of the number of hook-like engaging elements to the number of loop-like engaging elements is preferably in the range of 40:60 to 60:40.
  • the number of monofilament yarns for hook-like engaging elements to be driven into the hook surface fastener and the number of multifilament yarns for loop-like engaging elements to be driven into the loop surface fastener are both 20 warps (monofilament yarn for hook-like engaging elements).
  • the number of threads (including multifilament threads for loop-shaped engagement elements) is preferably about 2 to 8.
  • a hook-and-loop juxtaposed type hook-and-loop fastener there are a total of 20 warps (monofilament threads for hook-like engagement elements and multifilament threads for loop-like engagement elements) (monofilament threads for hook-like engagement elements and multifilament threads for loop-like engagement elements).
  • the number ratio of the monofilament yarn for the hook-shaped engagement element and the multifilament yarn for the loop-shaped engagement element is preferably 40:60 to 60:40. A range is preferred.
  • a plurality of metal rods are arranged parallel to the warp on the fabric base fabric.
  • a method may be used in which the engaging element thread is passed through the upper part of the metal rod to form a loop, and after the loop is formed, the metal rod is pulled out from the loop.
  • step 2 the fabric for hook-and-loop fasteners obtained in this way is carried out in step 2, that is, the base fabric is introduced into a heating area, heated to a temperature higher than the temperature at which the heat-sealing component melts, and the threads constituting the base fabric are heat-shrinked.
  • the melted material from the heat-fusible yarn is sent to the step of permeating the base fabric.
  • heat treatment is performed to melt the heat-adhesive component of the core-sheath type polyester multifilament yarn.
  • the heat treatment is performed by continuously running the long film in the heat treatment furnace (9) without winding it up midway.
  • the sheath component of the core-sheath type heat-fusible multifilament yarn constituting the weft is melted and the melt is permeated into the base fabric, and at the same time, the warp, engagement element yarn, and weft are thermally contracted and engaged.
  • the base of the loop made of monofilament yarn or multifilament yarn for the joining element is tightened to fix it to the textile base fabric. It is preferable to run the long surface fastener fabric while it is running in the heat treatment furnace without applying much tension so that it can sufficiently shrink.
  • the loop shape of the hook-shaped engagement element is fixed by the heat during this heat treatment, and even after cutting one leg of the hook-shaped engagement element loop in the subsequent step 4 to form a hook-shaped engagement element, The hook shape is maintained and sufficient engagement strength is obtained. Also, in the case of a loop-shaped engagement element, the loop shape becomes a natural and unified shape.
  • the heat treatment temperature in step 2 is such that the heat-sealable components constituting the weft are melted or softened, but other components and other yarns are not melted, and the monofilament yarn for the hook-shaped engagement element is A temperature of 150 to 220°C, which is the temperature at which the loop shape is fixed, is generally used, more preferably a range of 185 to 215°C, and even more preferably a range of 190 to 210°C.
  • Such heat treatment is usually performed by running the hook-and-loop fastener fabric in a heated furnace. Specifically, the heat treatment is completed by running it at a speed of 0.30 to 1.30 m/min and staying in the heating furnace for 20 to 120 seconds.
  • step 3 the base fabric for the hook-and-loop fastener that has been heat-treated in this way is subjected to step 3 described above, that is, the base fabric is taken out from the heating area of the above-mentioned step 2, and the back side of the base fabric is coated with the heat-adhesive component melted.
  • a process of pressing against a fixed surface or roll surface is performed.
  • a preferred method of implementing this step 3 is shown in FIG. By performing this step, the vertically undulating shape of the hook-and-loop fastener base fabric that occurred in the heat treatment step 2 is eliminated, and a smooth base fabric surface is obtained.Furthermore, by repeating engagement and peeling, the engaging element is It is possible to further prevent the fabric from being pulled out from the base fabric.
  • FIG. 3 shows a case where the back side of the fabric base fabric (5) for hook-and-loop fasteners is pressed against the fixed surface (10) immediately after exiting the heat treatment furnace (9).
  • this step 3 it is possible to eliminate vertical undulations of the hook-and-loop fastener, and as a result, a hook-and-loop fastener with almost no undulations is obtained, and when the engaging elements existing in the ear area are cut and removed, The base of the joining element can be reliably cut. Furthermore, this step can further prevent the engagement element from being pulled out from the base fabric even if engagement and separation are repeated. In other words, through this process, the threads that make up the base fabric are crimped together, and the heat-sealing component pushed out by the crimping penetrates into the adjacent threads, further increasing the bonding force and making the engagement element stronger. Since it is fixed to the base fabric, the engagement element can be prevented from being pulled out from the base fabric.
  • step 3 is performed by sliding the base fabric on a fixed surface or a rolled surface while pressing the same surface, the above-mentioned undulation can be eliminated and the pull-out resistance of the engaging element can be improved.
  • the effect can be further expressed.
  • it is necessary to press the back side of the base fabric against a fixed surface or roll surface, and to prevent the engaging element loops on the opposite side from the pressing surface from being pushed down by the same operation. It is preferable to allow the base fabric to slide on a fixed surface or on a roll surface rotating at a surface speed different from the running speed of the base fabric.
  • the warp yarns which are floating above and below the weft yarns, are pressed in the thickness direction of the base fabric at the point where they are sunk the most toward the back side, which will be described later.
  • the thickness satisfies 0.94 times or less of the same thickness at the part that is most prominent on the surface side.
  • the running direction of the loop fabric after contacting a fixed surface or a roll surface, and to set the tension applied to the base fabric to about 50 to 600 g/cm. More preferably, a tension of about 100 to 400 g/cm is applied. More preferably, the above step 3 is performed by a method of pressing the loop fabric against a fixed surface and sliding it on the same surface while changing the running direction, and by changing the running direction, the loop fabric is pressed against the fixed surface or It becomes easier to press against the roll surface and the effect of pressing and sliding is improved.
  • the step 3 may be carried out without first cooling the base fabric taken out from the step 2, at a time when the base fabric is still in a high temperature state due to the heat applied in the step 2, that is, the step It is preferable to use the residual heat from step 2. Even if the base fabric that has come out of step 2 is once cooled and then reheated, the distortion of the base fabric is difficult to eliminate, making it difficult to obtain the full effect of the present invention. Therefore, it is preferable to carry out step 3 immediately near the place where step 2 was performed, while the hook-and-loop fastener fabric that has come out of step 2 is still heated.
  • the surface and back surfaces of the hook-and-loop fastener fabric sent to this process come into contact with any solid objects such as rollers or guides from the time it enters the heat treatment furnace until the back surface is pressed against the fixed surface or roll surface. It is preferable that the fixed or rolled surface is the first contact object, without any contact.
  • the fixed surface or roll surface used in step 3 preferably has a contact length of 20 to 100 mm with the back surface of the base fabric and a contact time of 2 to 10 seconds.
  • Suitable materials include fixed surfaces and rolled surfaces made of metal, ceramics, or heat-resistant resin.
  • the surface of the fixed surface or roll surface may be mirror-like, satin-like, or have some unevenness if the back surface of the loop fabric can be pressed and the back surface of the loop fabric can be slid. It may be something that is currently in use.
  • the difference in running speed when sliding on a fixed surface is preferably 4 to 30 mm/sec.
  • the hook-and-loop fastener fabric (1) changes its running direction by 90° along the fixed plane (4).
  • such fixed surfaces and roll surfaces are preferably heated to a temperature 80 to 100°C lower than the heat treatment temperature in order to enhance the contact effect, but usually, the base coming out of the heat treatment furnace is The surface of the fixed surface or roll surface may be warmed by residual heat of the cloth.
  • the surface that presses the back side of the base fabric may be a fixed surface, or a roll surface whose contact surface rotates at a surface speed different from the speed of the base fabric as the base fabric runs, or a surface that actively presses the base fabric. It may be any type of roll surface with a drive that pulls the base fabric and rotates at a surface speed that is different from the speed of the base fabric.
  • a roll surface as mentioned above, by creating a difference between the surface speed of the roll and the running speed of the loop fabric that is pressed against the surface, the back side of the loop fabric is moved above the roll surface. Since it is preferable to slide the device, the device becomes complicated. Therefore, in the present invention, it is preferable to use a fixed surface as shown in FIG. 3, which is structurally simple and easy to reliably obtain an effect.
  • the fixed surface may be a guide-like narrow surface, but is preferably a fixed surface having the contact length as described above.
  • the textile base fabric (5) is run and passed through a heat treatment furnace (9), and the warp, weft, and engagement element yarn are treated by this heat treatment furnace (9) as described above. It is preferable to undergo shrinkage and exit the heat treatment furnace (9) and then run continuously on a fixed surface or roll surface (10).
  • the textile base fabric (5) is under tension in the warp direction.
  • the tension applied to the textile base fabric immediately after passing through the fixed surface or the roll surface (10) is about 50 to 600 g/cm. More preferably, a tension of about 100 to 400 g/cm is applied.
  • the warp threads float above and below the weft threads, and therefore the back side of the woven base fabric is covered with the warp threads, and there is no presence of heat-sealable components.
  • the weft threads in the roll have little direct contact with the fixed or roll surface. Therefore, the molten material of the heat-sealing component does not directly adhere to the surface of the fixed surface or the roll surface, thereby preventing any trouble from occurring.
  • the thickness in the thickness direction of the base fabric (hereinafter sometimes referred to as Tb) at the point where the warp (6), which floats up and down above and below the weft, sinks the most toward the back side (hereinafter sometimes referred to as Tb) is the thickness on the front side. It is necessary that the thickness be 0.94 times or less the thickness in the same direction (hereinafter sometimes referred to as Ts) at the point where it is most elevated.
  • the thickness of the warp threads which float above and below the weft threads, is the same thickness in the thickness direction of the base fabric at the point where it sinks the most toward the back side, and the same thickness at the point where it rises the most toward the front side. This is preferable because it satisfies the requirement of 0.94 times or less, preferably 0.90 times or less.
  • K indicates the thickness direction of the base fabric.
  • (Tb) is preferably 0.7 times or more, particularly 0.75 times or more, as much as (Ts).
  • FIG. 4 shows that the effects of the present invention can be obtained by pressing the back side of the textile base fabric (5) against a fixed surface or roll surface (10) while the heat-sealing component is melted.
  • FIG. 5 shows the fabric hook-and-loop fastener when the back side of the fabric base fabric (5) is not pressed against the fixed surface or roll surface (10) while the heat-sealing component is melted.
  • (Tb) is approximately the same value as (Ts)
  • (Tb) satisfies (Ts) of 0.94 or less as described above. do not have.
  • FIG. 4 schematically shows a photograph of the cut portion obtained as a result.
  • the obtained average values are the warp thickness (Tb) in the thickness direction of the base fabric at the location where it sinks the most toward the back side and the warp thread thickness (Tb) in the thickness direction of the base fabric at the location where it rises the most toward the front side. Thickness (Ts).
  • the multiple of (Tb) to (Ts) defined in the present invention (hereinafter referred to as (Tb)/(Ts) ratio, simply (Tb)/(Ts), or the ratio of (Tb) and (Ts)) ) can be said to be the average value calculated including these locations.
  • FIG. 5 is a diagram when the hook-and-loop fastener fabric base fabric (5) is not pressed against the fixed surface or roll surface (10) as described above.
  • Tb) and (Ts) are approximately the same value, the effect obtained by using step 3, that is, the vertical undulation of the hook-and-loop fastener is eliminated, and the engagement element is further improved by repeating engagement and peeling. The effect of further preventing the fabric from being pulled out from the textile base fabric cannot be obtained.
  • the ratio of (Tb) and (Ts) is mainly determined by the pressing strength when pressing the hook-and-loop fastener base fabric against a fixed surface or a rolled surface.
  • the fabric is run on a fixed surface or a roll surface in a state of This value can be freely changed depending on the tensile force of the base fabric when changing the running direction, the extent to which the running direction is changed, the temperature of the base fabric, etc.
  • the surface side of the hook-and-loop fastener fabric base fabric (5) where the hook-and-loop fastener engaging element loops are present is not pressed against the fixed surface or roll surface (10).
  • step 4 the fabric having the hook-shaped engagement element loops on the surface obtained in this way is processed in step 4, that is, after the base fabric is cooled, the engagement element loops existing on the surface of the base fabric are hook-shaped. If the loop is for an engagement element, one leg of the loop is cut off to form a hook-like engagement element, and one side of the loop for the hook-like engagement element is cut. Of course, if the engagement element loop is a loop-shaped engagement element, it is not necessary to cut one side.
  • the cutting device used is to cut one leg of the loop for the hook-shaped engagement element of the woven base fabric for hook hook-and-loop fasteners or the woven base fabric for hook-and-loop coexisting hook-and-loop fasteners running in the warp direction between two fixed blades. It is preferable to use a cutting device that has a structure in which the material is cut by reciprocating motion of a movable cutting blade. A fabric in which one leg of the hook-shaped engagement element loop is cut is used as a hook-and-loop fastener or a hook-and-loop coexistence type hook-and-loop fastener.
  • the wide hook-and-loop tape produced in Steps 1 to 4 above is then processed in Step 5, in which the vicinity of the root of the engaging element is continuous in the warp direction of the base fabric and at a predetermined interval in the weft direction of the base fabric.
  • the base fabric is sent to a step of continuously forming an ear region and an engaging element region in which no engaging elements are present in the warp direction of the base fabric.
  • a region where no engaging element exists i.e., region for the selvedge: 3b
  • an engaging element exist at a predetermined interval in the weft direction (We direction) of the base fabric.
  • a wide hook-and-loop tape (1) is obtained in which regions (engaging element regions: 4) are present alternately and these regions are continuous in the warp direction (Wa direction).
  • the ear area (3b) has a width of about 2 to 20 mm, especially about 4 to 10 mm, on both sides of the engagement element area (4) with a width of 12 to 100 mm, and all the engagement elements in that area are warped. Formed by cutting in the direction.
  • FIG. 1 is a schematic perspective view of an example of a hook-and-loop fastener having ears according to the present invention
  • FIG. 2 is a wide-width state before dividing into hook-and-loop fasteners as shown in FIG. 1 (i.e., before step 6). condition).
  • 4 is an engaging element region
  • 3 is an ear portion
  • 3b is an ear region.
  • We represents the width direction (weft direction)
  • Wa represents the length direction (warp direction)
  • 7 represents the engagement element.
  • the engaging element region (4) and the ear region (3b) are usually both continuous in the length direction of the hook-and-loop fastener (warp direction: Wa direction).
  • a step of cutting (slitting) approximately the middle part in the width direction of the ear region 3b shown in FIG. 2 and separating it into individual narrow hook-and-loop tapes, that is, step 6, produces the tape as shown in FIG. , a hook-and-loop fastener (5) having ears (3) at both ends is obtained.
  • the width of the engaging element region (4) cannot be generalized because various widths are required depending on the use of the hook-and-loop fastener, but generally it is 8 mm wide, 16 mm wide, 21 mm wide, and 26 mm wide. , 30 mm width, 36 mm width, 45 mm width, 95 mm width, etc. are used. Further, the width of the wide hook-and-loop fastener before being divided into narrow-width hook-and-loop fasteners is preferably 50 to 300 mm, particularly 100 to 200 mm, and preferably a width that can be divided into 2 to 10 narrow hook-and-loop fasteners. The width of the ear portion is preferably 1.5 to 4 mm.
  • the cutting device used for forming the selvage region is not particularly limited, and a normal cutting device used for trimming the raised naps on the surface of the fabric can be used.
  • a reaping device as described in Patent Document 1 mentioned above, specifically, a disc-shaped rotary blade in which several cutting blades are cut out on the circumference, continuously reaps the engagement element.
  • An example of such a device is a device that is structured to transport the hook-and-loop fastener tape in the longitudinal direction while cutting it. When cutting off the engagement element with this disc-shaped rotary blade, as shown in FIG. 3 of Patent Document 1, the hook-and-loop tape is transported while being bent, and the rotary blade is cut off at the bent point.
  • the cutting process of the engagement element to form the ear region is performed two or more times, and at least once from the second time onwards, the cutting blade is cut in the opposite direction from the direction in which the cutting blade was applied to the engagement element the first time.
  • a method may also be used in which a cutting blade is applied to the engagement element from the direction.
  • At least one ear area (3b) is formed in the width direction, and as shown in FIG. 2, the ear part - (engaging element area - ear part area) n - Engagement element region -
  • n is an integer of 1 or more.
  • tapes of multiple widths may coexist in a wide tape for hook-and-loop fasteners, and in order to produce hook-and-loop fasteners without loss, tapes of various widths should be used as much as possible. It is preferable to combine them.
  • step 6 that is, cutting approximately the middle part in the width direction of the ear region (3b).
  • step 6 By sending the area to the step of forming ears (3), a plurality of elongated polyester woven hook-and-loop fasteners having ears (3) at both ends in the weft direction (We) as shown in FIG. 2) is obtained.
  • the cutting is generally performed by pressing the middle part of the ear region against a fixed or rotating blade, but other methods may be used.
  • the yarn at the edge of the ear may be lightly heat-sealed, and the thread of the ear may be lightly heat-sealed to prevent the stub from the ear from impairing the feel of the ear.
  • the surface may be lightly heat fused, and this heat fusion treatment may be performed before step 6.
  • the hook-and-loop fastener manufactured by the above method satisfies the following configurations (1) and (2), as described above.
  • (1) The thickness of the warp yarns, which float up and down above and below the weft yarns, is the same thickness in the thickness direction of the base fabric at the point where it sinks the most toward the back side, and the same thickness at the point where it rises the most toward the front side. be less than 0.94 times the size of the (2)
  • At least one of the ears present at both ends is formed by cutting and removing the root of the engagement element;
  • the above configuration (1) is caused by step 3 as described above, and with this configuration, it is extremely rare for the hook-and-loop fastener to be undulated in the vertical direction, and in step 5, the ear region
  • the hook-and-loop fastener has ears that are uniformly trimmed so that the engagement element becomes a stump of uniform height near the base of the engagement element, and furthermore, the pull-out resistance of the engagement element is improved. This will be a big improvement.
  • at least one of the ears is formed by cutting off the engaging element, so a large number of weaving equipment and beam stocks of warp threads and threads for the engaging element are required. It is possible to solve the problems of the conventional technology, such as the need for a large amount of labor and time to change the tape width, and the need for a large amount of inventory in the middle of the process.
  • the pulling force of the engaging element from the base fabric is 5.5 N or more.
  • an extremely high value can be achieved by pressing the back side of the woven base fabric (5) against a fixed surface or roll surface (10) while the heat-adhesive component is molten, which is performed after heat treatment. ing.
  • the pull-out force of the engagement element referred to here refers to the method of measuring the pull-out force of the engagement element using a tensile testing machine manufactured by Shimadzu Corporation. Bend it in the width direction (weft direction) and set it in the chuck of a tensile testing machine, grab one hook-shaped engagement element of the hook-and-loop fastener set with pliers, and hook it from the base fabric at a tensile speed of 100 mm/min. This is the value measured at the maximum force when the engaging element is pulled out from the base fabric of the hook-and-loop fastener.
  • the polyester woven hook and loop fastener thus obtained is preferably dyed.
  • high-temperature, high-pressure dyeing using disperse dyes which is used for dyeing polyester textile products, is used. That is, the hook-and-loop fastener of the present invention is wound into a long roll, specifically, the hook-and-loop fastener with a length of 50 to 300 m is wound into a roll, and this roll-shaped object is placed on a partition plate. This is done by stacking a plurality of partition plates with rolls on them vertically and inserting them into a dyeing pot, and then circulating a dye solution in the pot to bring the hook-and-loop fastener into contact with the dyeing solution.
  • Specific staining conditions include, for example, dyeing at about 120 to 140°C for about 20 to 120 minutes.
  • the type of disperse dye used for dyeing is not particularly limited, and any of the disperse dyes conventionally used for dyeing polyester fibers can be used, including monoazo, diazo, anthraquinone, and nitro dyes. Examples include disperse dyes such as , styryl, and methine.
  • the hook-and-loop fastener of the present invention does not cause undulation in the vertical direction, when it is wound into a roll, the distance between the hook-and-loop fasteners that have been wound, that is, the spacing between the overlapping hook-and-loop fasteners, is uniform (rolled product). ) is obtained.
  • the uniform intervals allow for even contact with the dyeing solution (that is, less uneven flow of the dyeing solution), resulting in uniform dyeing.
  • a dyed hook-and-loop fastener with fewer staining spots can be obtained.
  • dyeing with disperse dyes is carried out at high temperature and pressure for a long time as described above, and the hook-and-loop fastener of the present invention also has the feature that it is difficult to cause new waves during this process.
  • the dyeing may be performed between [Step 5] and [Step 6] or after [Step 6].
  • the dyeing may be performed on the ear region where no engagement element is present. It is preferable to perform this after the step of forming. As a result, even the cut surface of the stump of the engagement element existing in the ear is dyed, making the cut surface of the stump less noticeable, and the ear formed from the outer ear (3a) and middle ear region (3b) This is preferable since there is no apparent distinction.
  • the hook-and-loop fastener obtained by the present invention can be used in fields where conventional general textile hook-and-loop fasteners are used, such as clothing, shoes, bags, hats, gloves, blood pressure monitors, supporters, etc. , binding bands for packing, binding tape, various toys, securing sheets for civil engineering and construction, securing various panels and wall materials, securing electrical parts, storage boxes and packaging cases that can be assembled and disassembled, small items, curtains, etc. It can be used in a wide range of fields, and is particularly suitable for attaching hook-and-loop fasteners to fabrics or sheets by sewing, such as clothing, shoes, bags, hats, gloves, supporters, etc.
  • polyester-based component products that are dyed with disperse dye after attaching the hook-and-loop fastener.
  • the engagement force of the hook-and-loop fastener was measured in accordance with JIS L 3416-2000.
  • the hook-and-loop fastener of the example and comparative example is a loop hook-and-loop fastener
  • the hook-and-loop fastener A8693Y manufactured by Kuraray Fastening Co., Ltd.
  • Kuraray Fastening Co., Ltd. is used as the hook-and-loop fastener of the example and comparative example.
  • hook-and-loop fastener is a hook-and-loop fastener
  • loop-and-loop fastener B2790Y manufactured by Kuraray Fastening Co., Ltd.
  • hook-and-loop fasteners of the examples and comparative examples are hook-and-loop coexistence type hook-and-loop fasteners, use the same loop fastener.
  • a hook-and-loop hook-and-loop fastener was used.
  • Example 1 Manufacture of loop hook-and-loop fasteners
  • the following yarns were prepared as warp and weft yarns constituting the woven base fabric of the loop hook-and-loop fastener, and multifilament yarns for loop-shaped engagement elements.
  • [Warp] ⁇ Multifilament yarn made of polyethylene terephthalate homopolymer ⁇ Total decitex and number of filaments: 36 at 167 dtex ⁇ Dry heat shrinkage rate at 180°C: 15%
  • Multifilament yarn for loop-shaped engagement element ⁇ Multifilament yarn made of polybutylene terephthalate containing 5% by weight of polytrimethylene terephthalate ⁇ Total decitex and number of filaments: 8 at 305 dtex ⁇ Dry heat shrinkage rate at 180°C: 13%
  • a 12 cm wide loop surface fastener tape woven under the above conditions is heat-melted only in the weft sheath component, and in the warp, the multifilament yarn for the loop engagement element, and the weft core component.
  • Heat treatment is carried out by running the heat treatment furnace at 195°C, a temperature that does not touch solid objects, for 60 seconds with almost no tension applied, melting the sheath component of the weft yarn, and at the same time melting the warp, weft and loop-like ties.
  • the multifilament yarn for composite elements was shrunk. As a result, the tape shrunk by about 10% in the weft direction, and the sheath component was melted to fuse adjacent yarns.
  • the density of loop-shaped engagement elements in the engagement element region of the obtained textile tape for loop hook-and-loop fasteners was 45 pieces/cm 2 , and the height of the loop-shaped engagement elements from the textile base surface was 2.1 mm. Met.
  • the obtained hook-and-loop fastener fabric tape is cut using an engagement element cutting device as described in FIG. 3 of Patent Document 1, that is, a disc-shaped rotary blade in which several cutting blades are cut out on the circumference. and a fixed cutting blade, and at the point where the hook-and-loop tape is folded and continuously transferred, the loop-shaped engagement element is continuously cut from the base of the engagement element by a rotating blade and a fixed cutting blade.
  • a wide loop hook-and-loop fastener tape was obtained, which had outer ears with a width of 6 mm at both ends, and four engaging element regions with a width of 21 mm and three ear regions with a width of 4 mm alternating between them. Then, a slit was made in the center of the ear region, and the outer ear portion was further cut to a width of 2 mm, and four loop hook-and-loop tapes were made, each having ears with a width of 2 mm at both ends of the engagement element region with a width of 21 mm. I got the book.
  • This loop hook-and-loop fastener with ears is made of conventional nylon thread and has superior flexibility compared to loop hook-and-loop fasteners coated with back coat adhesive. Furthermore, there is no evidence of any scraping of the hook-and-loop fastener base fabric; all of the engaging elements have been cut off near the base of the hook-and-loop fastener at a height that is flush with the base fabric surface, and there is no scraping from the hook-and-loop fastener surface. Just by looking at or touching it, it was almost impossible to distinguish between the ear portions generated from the outer ear portion and the ear portions generated from the ear region.
  • the loop-shaped engaging element is a collection of thin filaments or that there are many uncut parts, but in the case of this loop hook-and-loop fastener, such I could't see anything at all.
  • the warp thickness (Tb) in the thickness direction of the base fabric at the point where it sinks the most into the back side of this loop hook and loop fastener and the warp thickness in the thickness direction of the base fabric at the point where it stands out the most on the front side.
  • Ts thickness
  • (Tb) 0.088 mm
  • (Ts) was 0.105 mm
  • (Tb)/(Ts) was 0.84.
  • the hook-and-loop fastener base fabric layer was completely flat, and no vertical undulations, which are often seen in conventional hook-and-loop fasteners, were observed.
  • the initial engagement force was 15.1 N/cm 2 in shear strength, 1.22 N/cm in peel strength, and the engagement force after 1000 engagements and peeling was 14 in shear strength. .3 N/cm 2
  • the peel strength was 1.15 N/cm, indicating that it had an excellent engagement force as a hook-and-loop fastener.
  • the pull-out force of the loop-shaped engagement element of this loop fastener is as high as 22.1N, and even after repeating engagement and separation 1000 times, the loop-shaped engagement element is pulled out from the base fabric and a long loop protrudes from the surface. No spots were seen at all.
  • Example 2 Manufacture of hook-and-loop fasteners
  • the thread for the engaging element was changed to the following monofilament thread for the hook-shaped engaging element, a plain weave was used as the weave structure, and the weave density (after heat shrinkage treatment) was 56 for the warp. It was woven with a thread count/cm and a weft thread count of 20 threads/cm. Then, one monofilament yarn for the hook-like engagement element is driven in parallel to the warp at a ratio of one for every four warp yarns, and after floating five weft yarns, it straddles three warp yarns, forming a loop at the straddling point. A loop was formed on the base fabric as shown.
  • the hook-and-loop fastener tape woven in this way is heated to a temperature at which only the weft sheath component is thermally melted, and none of the warp yarns, engaging element threads, and weft core components are thermally melted.
  • the heat treatment was carried out by running a heat treatment furnace at 0.degree. C. for 55 seconds with almost no tension applied, thereby shrinking the warp, weft, and engagement element yarn.
  • Example 2 a surface is placed along a fixed surface made of stainless steel with a mirror-finished surface installed right next to the exit of the heat treatment furnace.
  • the back side of the zipper fabric is pressed while sliding on the same surface, and after passing the fixed surface, the fabric is run with a tension of 360 g/cm, and the running direction is changed as shown in Figure 3.
  • the back side of the hook-and-loop fastener fabric was pressed against the fixed surface for 5 seconds at a 90-degree turn. Then, the obtained hook-and-loop fastener fabric was cooled, and one leg of the hook-shaped engagement element loop was cut to form a hook-shaped engagement element.
  • the process from weaving the fabric for the hook-and-loop fastener, to the process of heat treatment, to the process of pressing the back side against a fixed surface, to the process of cutting one leg of the loop for the hook-shaped engagement element can be carried out continuously without winding it up in the middle. done consistently
  • the density of hook-like engaging elements in the engaging element region of the obtained hook-and-loop fastener was 42 pieces/cm 2 , and the height of the hook-like engaging elements from the base fabric surface was 1.5 mm.
  • the hook-shaped engagement elements are continuously cut off from the root using an engagement element cutting device, thereby forming an ear region having a width of 4 mm and continuous in the length direction of the tape. Flat parts were formed at intervals of 21 mm.
  • a wide tape for hook hook and loop fasteners was obtained, which had outer ears with a width of 6 mm at both ends, and four engagement element regions with a width of 21 mm and three ear regions with a width of 4 mm alternately between them.
  • this hook hook and loop fastener with ears is made of conventional nylon thread, and has superior flexibility compared to hook hook and loop fasteners coated with back coat adhesive.
  • the warp thickness (Tb) in the direction of the thickness of the base fabric at the point where it sinks the most into the back side of this hook hook and loop fastener and the warp thickness in the direction of the thickness of the base fabric at the point where it stands out the most on the front side.
  • Ts temperature
  • Tb ratio thereof
  • the initial engagement force was 15.6 N/cm 2 in shear strength, 1.24 N/cm in peel strength, and the engagement force after 1000 engagements and peeling was 14 in shear strength. .7 N/cm 2 , and the peel strength was 1.20 N/cm, indicating that it had an excellent engagement force as a hook surface fastener.
  • the pull-out force of the hook-shaped engagement element is 6.3N, and it has excellent pull-out resistance.In fact, even after repeated engagement and separation 1000 times, the hook-shaped engagement element was not pulled out from the base fabric. No traces or long protrusions were seen that had been pulled out from the surface of the base fabric.
  • the hook hook and loop fastener obtained in this way was attached by sewing in pairs with the loop hook and loop fastener of Example 1. It is flexible and can be easily attached without damaging the texture of the work clothes. Moreover, even after using this work clothes for a long time, the ears of the hook-and-loop fastener may become damaged due to repeated engagement and peeling or washing. It did not break and could be used comfortably without compromising engagement performance.
  • Example 3 Manufacture of hook and loop hook-and-loop fasteners
  • polybutylene terephthalate copolymerized with 25 mol% isophthalic acid was used as the weft.
  • a core-sheath type mulch having the same core component and number of filaments as the weft used in Examples 1 and 2 above, except that the sheath component was 48 fibers with a total decitex of 220 dtex and a 180°C dry heat shrinkage rate of 15%.
  • a hook-and-loop hook-and-loop fastener was manufactured using filament yarn.
  • a plain weave is used as the weave structure, and the weave density (after heat shrinkage treatment) is 56 warps/cm and 20 wefts/cm, and a loop-shaped engagement element is attached to one for every four warps.
  • multifilament yarn for hook-shaped engagement elements or monofilament yarn for loop-shaped engagement elements three weft yarns are floated and then straddled over one warp yarn, forming a loop at the straddling point.
  • a monofilament yarn for a hook-shaped engagement element after floating and sinking three weft yarns, it straddles three warp yarns, and a loop is formed at the straddling point. A loop was formed on the base fabric as shown. At this time, the multifilament yarn for the loop-shaped engagement element and the monofilament yarn for the hook-shaped engagement element were alternately woven so that two yarns were present continuously.
  • Example 1 and Example 2 above there is a 6.5 mm wide outer ear region in which the thread for the engaging element is not woven at one end, followed by a 108 mm wide engaging element region, and then at the end.
  • a tape for a hook-and-loop hook-and-loop fastener was woven, in which a 6.5 mm wide outer ear region in which the thread for the engagement element was not woven was formed.
  • a 12 cm wide hook-and-loop hook-and-loop hook-and-loop tape woven by the above method is heated so that only the sheath component of the weft is melted by heat, and the warp, engaging element thread, and even the core component of the weft are all heated.
  • Heat treatment was performed by running in a heat treatment furnace for 60 seconds at a temperature of 205° C., which is a temperature at which no melting occurs, and with almost no tension applied, to shrink the weft yarns, the weft yarns, and the engagement element yarn.
  • the tape shrunk by 11% in the weft direction and melted the sheath component to fuse adjacent yarns.
  • the fabric for hook-and-loop fasteners is applied along a fixed surface made of stainless steel with a matte surface installed at the outlet of the heat treatment furnace as in Examples 1 and 2. It was made to run while sliding on the same surface while pressing the back side, and after passing the fixed surface, it was made to run with a tension of 280 g/cm applied, and the running direction was changed by 90 degrees as shown in Fig. 3 midway through. The back surface was pressed against the fixed surface for 5 seconds. The obtained fabric was cooled, and one leg of the loop for the hook-shaped engagement element was cut to form a hook-shaped engagement element.
  • the hook-like engaging element density in the engaging element region of the obtained hook-and-loop coexistence type hook-and-loop fastener was 32 pieces/cm 2
  • the loop-like engaging element density was 32 pieces/cm 2
  • the hook-like engaging element area was 32 pieces/cm 2 .
  • the height from the base fabric surface was 1.6 mm
  • the height of the loop-shaped engagement element from the base fabric was 2.0 mm.
  • the process of weaving the fabric for the hook-and-loop fastener, heat-treating it, heat-compressing the back side, and cutting one leg of the loop for the hook-shaped engagement element was carried out continuously without winding it up midway. .
  • the engagement element is continuously cut off from the root using the engagement element reaping device, resulting in an ear region having a width of 4 mm and continuous in the length direction of the tape.
  • Flat parts were formed every 21 mm.
  • a wide tape for hook-and-loop fasteners was obtained, which had outer ears with a width of 6 mm at both ends, and four engagement element regions with a width of 21 mm and three ear regions with a width of 4 mm alternately between them.
  • a slit is made in the center of the ear region of this tape, and the outer ear portion is further cut to a width of 2 mm, so that a hook-and-loop coexistence is created in which ears with a width of 2 mm are present at both ends of the engagement element region with a width of 21 mm.
  • Four molded surface fastener tapes were obtained.
  • this hook-and-loop coexistence hook-and-loop fastener with ears is made of conventional nylon thread and has hooks and loops coated with back coat adhesive. It has superior flexibility compared to loop-concurrent type hook-and-loop fasteners, and there is no uncut portion of the engaging element, no visible stumps, or scraped parts of the hook-and-loop fabric on the ears, and there is no visible scraping of the hook-and-loop fabric near the base of the engaging element.
  • All the engaging elements are cut at a height that is large and flush with the surface of the base fabric, and when viewed from the surface of the hook-and-loop fastener, there are two ears, one from the outer ear and one from the ear region. were almost indistinguishable.
  • the warp thickness (Tb) in the thickness direction of the base fabric at the point where it sinks the most into the back side of this hook-and-loop coexistence type hook-and-loop fastener and the thickness of the base fabric at the point where it stands out the most on the front side.
  • Tb)/(Ts) was 0.87.
  • the base fabric of the obtained hook-and-loop fastener was completely flat, and there was no vertical undulation of the base fabric that was observed in conventional hook-and-loop fasteners.
  • the initial engagement force was 11.1 N/cm 2 in shear strength, 1.05 N/cm in peel strength, and the engagement force after 1000 times engagement and peeling was 11.1 N/cm 2 .
  • the shear strength was 10.0 N/cm 2 and the peel strength was 0.96 N/cm, indicating that it had an excellent engagement force as a hook-and-loop type hook-and-loop fastener.
  • the pull-out force of the hook-shaped engagement element is an excellent value of 5.6N, which means that even after 1000 repetitions of engagement and separation, there is no evidence that the hook-shaped engagement element has been pulled out from the base fabric. Alternatively, this was confirmed by the fact that there were no long protruding objects drawn out from the surface of the base fabric.
  • Example 1 Example 2, and Example 3
  • the wide hook-and-loop fasteners obtained in Steps 1 to 4 were used, and in Step 5, the interval between the rotary cutting blades was changed.
  • flat portions having a width of 4 mm and serving as ear regions were formed at intervals of 30 mm in parallel to the tape length direction.
  • three types of wide hook-and-loop fastener tapes were obtained, each having a 5 mm wide outer ear portion at both ends and three 30 mm wide engaging element regions and two 4 mm wide ear regions alternately between them. .
  • a slit is made in the center of the ear region of these hook-and-loop fasteners, and the outer ear portion is further cut to a width of 2 mm, and the loop surface has ears with a width of 2 mm at both ends of the engagement element region with a width of 30 mm.
  • Three pieces each of a fastener tape (Example 4), a hook-and-loop fastener tape (Example 5), and a hook-and-loop coexisting type hook-and-loop fastener (Example 6) were obtained.
  • the hook-and-loop fastener is made by continuously cutting off the engaging elements that form the ear area from the root, and then slitting the middle of the ear area to quickly produce the hook-and-loop fastener with a width that matches the order. It has great industrial advantages because it can be obtained quickly and easily.
  • Example 1 the fabric for hook-and-loop fasteners was applied along a fixed surface made of stainless steel with a mirror-finished surface installed right next to the exit of the heat treatment furnace while the heat-sealing component remained in a molten state.
  • the selvedge was fabricated in the same manner as in Example 1, except that the operation of pressing and running, that is, the step 3 above, was not performed, and the weft was taken up with a roller after being sufficiently cooled after heat treatment. I made a loop fastener.
  • Example 2 the fabric for hook-and-loop fasteners was applied along a fixed surface made of stainless steel with a mirror-finished surface installed right next to the outlet of the heat treatment furnace while the heat-sealing component remained in a molten state.
  • the selvedge was fabricated in the same manner as in Example 2, except that the operation of pressing and running, that is, the step 3, was not performed, and the weft was taken up with a roller after being sufficiently cooled after heat treatment. A hook-and-loop fastener was made.
  • Ts warp thickness
  • the initial engagement force was 12.2 N/cm 2 in shear strength, 1.13 N/cm in peel strength, and the engagement force after 1000 engagements and peeling was 10 in shear strength. .2 N/cm 2
  • the peel strength was 0.83 N/cm, which was an engagement force inferior to that of the hook hook and loop fastener of Example 2.
  • the pull-out force of the hook-shaped engaging element of this hook-and-loop fastener was 5.3 N, which was also inferior to that of Example 2 in this respect.
  • the hook-shaped engagement elements were pulled out from the base fabric, and there were some areas where the hook-shaped engagement elements protruded for a long time from the surface. I could tell that it was inferior.
  • Example 3 the fabric for hook-and-loop fasteners was applied along a fixed surface made of stainless steel with a mirror-finished surface installed right next to the outlet of the heat treatment furnace while the heat-sealing component remained in a molten state.
  • a hook with ears was made in the same manner as in Example 3, except that after heat treatment without performing the pressing and running operation, that is, without performing step 3, the weft was taken up with a roller after it had sufficiently cooled. ⁇ We created a loop-based hook-and-loop fastener.
  • the warp thickness (Tb) in the thickness direction of the base fabric at the point where it sinks the most into the back side of this hook-and-loop coexistence type hook-and-loop fastener and the thickness of the base fabric at the point where it stands out the most on the front side.
  • Ts warp thickness
  • (Tb) was 0.098 mm and (Ts) was 0.102 mm, so (Tb)/(Ts) was 0.96.
  • the ears of this hook-and-loop fastener are wavy in places, and the raised areas are where the surface of the base fabric of the ear has been scraped off, and the sunken areas are the stubs left behind when the engaging element was cut off. It protruded from the surface and corresponded to the area.
  • the initial engagement force was 10.0 N/cm 2 in shear strength, 0.91 N/cm in peel strength, and the engagement force after 1000 times engagement and peeling was 10.0 N/cm 2 .
  • the shear strength was 7.5 N/cm 2 and the peel strength was 0.79 N/cm, which were inferior to the hook-and-loop fastener of Example 3.
  • the pull-out force of the hook-shaped engaging element of this hook-and-loop fastener was 4.4 N, which was also inferior to that of Example 2 in this respect.
  • Example 7 Example 2 was carried out in the same manner as in Example 2, except that the fixed surface against which the heat-sealing component was pressed in its molten state was replaced with a mirror-finish stainless steel roll surface with a satin-like surface.
  • Manufactured hook-and-loop fasteners The roll surface is designed to rotate 5 mm/second slower than the running speed of the fabric for hook hook and loop fasteners that runs in contact with it, and the contact time between the back surface of the base fabric and the roll surface is 5 seconds, and the While the adhesive fibers were kept in a molten state, they were pressed against the roll surface, slid on the roll surface, and rotated 1/4 turn along the roll surface.
  • the base fabric was subjected to a tension of 250 g/cm after passing through the roll surface.
  • this hook-and-loop fastener with ears has no stumps protruding from the surface of the base fabric of the engaging element or any scraping of the base fabric at all in the ears, and the base fabric of the engaging element All the engaging elements are cut off at a height that is close to the surface of the base fabric, and when viewed from the surface of the hook-and-loop fastener, there are selvages generated from the outer selvage area and selvages formed from the selvage area. The parts were almost indistinguishable in appearance.
  • Ts warp thickness
  • the initial engagement force was 15.3 N/cm 2 in shear strength, 1.21 N/cm in peel strength, and the engagement force after 1000 engagements and peeling was 14 in shear strength. .5 N/cm 2 , and the peel strength was 1.19 N/cm, indicating that it had an excellent engagement force as a hook hook and loop fastener.
  • the pull-out force of the hook-shaped engaging elements of this hook-and-loop fastener is 6.2N, and it has excellent pull-out resistance, and even after 1000 repetitions of engagement and peeling, the hook-shaped engagement elements can be pulled out from the base fabric. There was no evidence that it had been pulled out from the surface of the base fabric or that it had been pulled out from the surface of the base fabric and had any long protrusions on the surface.
  • Example 8 A hook hook and loop fastener was manufactured in the same manner as in Example 2 except that the monofilament yarn for the hook-like engagement element used in Example 2 was replaced with the following.
  • [Monofilament thread for hook-shaped engagement element] ⁇ Monofilament yarn made of polyethylene terephthalate homopolymer ⁇ Fineness: 450 dtex (diameter: 0.21 mm) ⁇ Dry heat shrinkage rate at 180°C: 18%
  • the average height (Ha) of the hook-like engaging elements present on the surface of the base fabric of the obtained hook-and-loop fastener was 1.54 mm, and this hook-and-loop fastener with ears was the same as that of Example 2.
  • the ears are located near the base of the engagement element and at a height that is flush with the surface of the base fabric. All of the engaging elements were cut off, and it was impossible to distinguish between the ears that came from the outer ear and the ears that came from the ear area just by looking at the surface of the hook-and-loop fastener.
  • the pull-out force of the hook-shaped engagement element was 6.0 N, and the pull-out resistance was also excellent. This was confirmed by the fact that there were no traces or anything that had been pulled out from the surface of the base fabric and protruded for a long time.
  • Example 9 A hook surface fastener was manufactured in the same manner as in Example 2, except that the monofilament yarn for the hook-like engagement element and the warp used in Example 2 were replaced with those having a low dry heat shrinkage rate as shown below.
  • [Monofilament thread for hook-shaped engagement element] ⁇ Monofilament yarn made of polyethylene terephthalate homopolymer ⁇ Fineness: 350 dtex (diameter: 0.18 mm) ⁇ Dry heat shrinkage rate at 180°C: 14%
  • [Warp] ⁇ Multifilament yarn made of polyethylene terephthalate homopolymer ⁇ Total decitex and number of filaments: 30 at 167 dtex ⁇ Dry heat shrinkage rate at 180°C: 12%
  • the obtained hook-and-loop fastener with ears had excellent flexibility, similar to the one in Example 2, and there was no uncut portion of the engagement element, no scraping of the stump, or any scraping of the hook-and-loop fastener base fabric on the ears. .
  • the warp thickness (Tb) in the direction of the thickness of the base fabric at the point where it sinks the most toward the back side and the warp thickness (Ts) in the direction of the thickness of the base fabric at the point where it rises the most toward the front side.
  • (Tb)/(Ts) was 0.88.
  • no vertical undulations were observed.
  • the initial engagement force was 15.3 N/cm 2 in shear strength, 1.19 N/cm in peel strength, and the engagement force after 1000 engagements and peeling was 14 in shear strength. .6 N/cm 2 and peel strength of 1.11 N/cm, which is slightly inferior to that of Example 2 as a hook-and-loop fastener, but it has a sufficiently excellent engagement force to be used as a hook-and-loop fastener.
  • the pull-out force of the hook-shaped engagement element was 5.8 N, which was slightly inferior to that of Example 2, but similar to the engagement force of Example 2, it had excellent pull-out resistance for a hook-and-loop fastener.
  • the hook-shaped engagement element was slightly pulled out from the base fabric after 1000 repetitions of engagement and peeling, and this indicates that the pull-out resistance of the hook-shaped engagement element is lower than that of Example 2. I could tell from the points.
  • Example 10 A loop surface fastener was manufactured in the same manner as in Example 1, except that the multifilament yarn for the loop-shaped engagement element and the warp used in Example 1 were replaced with those having a low dry heat shrinkage rate as shown below.
  • Multifilament yarn for loop-shaped engagement element ⁇ Multifilament yarn made of polybutylene terephthalate homopolymer ⁇ Total decitex and number of filaments: 8 at 305 dtex ⁇ Dry heat shrinkage rate at 180°C: 11%
  • [Warp] ⁇ Multifilament yarn made of polyethylene terephthalate homopolymer ⁇ Total decitex and number of filaments: 30 at 167 dtex ⁇ Dry heat shrinkage rate at 180°C: 12%
  • the obtained loop hook-and-loop fastener with ears had excellent flexibility, similar to that of Example 1, and there was no uncut portion of the engagement element, no scraping of the stump, or scraping of the hook-and-loop fastener base fabric at the ears. .
  • the warp thickness (Tb) in the direction of the thickness of the base fabric at the point where it sank the most toward the back side and the warp thickness (Ts) in the direction of the thickness of the base fabric at the point where it rose the most toward the front side were measured.
  • (Tb)/(Ts) was 0.83.
  • no vertical undulations were observed.
  • the initial engagement force was 14.2 N/cm 2 in shear strength, 1.10 N/cm in peel strength, and the engagement force after 1000 engagements and peeling was 13 in shear strength. .8 N/cm 2 and peel strength of 1.01 N/cm, and as in the case of the hook-and-loop fastener of Example 9, it has a sufficiently excellent engagement force to be used as a hook-and-loop fastener.
  • the pull-out force of the loop-shaped engagement element was 18.0 N, which was slightly inferior to that of Example 1, but had excellent pull-out resistance as a hook-and-loop fastener. It was observed that the loop-shaped engagement element was slightly pulled out from the base fabric after 1000 repetitions of engagement and peeling, and it was confirmed that the pull-out resistance of the loop-shaped engagement element was lower than that of Example 2. .
  • Example 11 and Comparative Example 4 One ear part was obtained from the outer ear part and the other ear part was the ear part obtained by slitting the center of the ear area obtained in Examples 1 to 3 and Comparative Examples 1 to 3 above.
  • Six kinds of long hook-and-loop fasteners with both ears are wound into rolls, each of these rolls is placed on a partition plate, and such partition plates are stacked at intervals in the vertical direction.
  • the hook-and-loop fastener was inserted into a dyeing pot, and the dye solution was circulated within the pot to bring the hook-and-loop fastener into contact with the dye solution, thereby dyeing the hook-and-loop fastener.
  • the dyeing temperature was 135°C
  • the dyeing time was 30 minutes while maintaining the temperature at 135°C
  • a deep red disperse dye was used as the dye. After dyeing, reduction cleaning and water washing were performed, and the roll-shaped hook-and-loop fastener was taken out from the dyeing pot and dried.
  • the dyed hook-and-loop fasteners of Examples 1 to 3 were all dyed in a uniform dark color with no staining spots, whereas the hook-and-loop fasteners of Comparative Examples 1 to 3 were all dyed at first glance. Although it appeared to be uniformly dyed, upon closer inspection, it was found that there were light and deep dyed areas in various places, indicating that the uniform dyeing property was poor. Further, in the hook-and-loop fasteners of Examples 1 to 3, no waving was observed even after dyeing, whereas in the hook-and-loop fasteners of Comparative Examples 1 to 3, the undulations were further enlarged by dyeing.
  • hook-and-loop fasteners are dyed up to the cut surface of the cutting stump of the engagement element of the ear, so the presence of the end of the stump is not noticeable, and the center of the ear and ear area that originates from the outer ear is dyed. It could not be distinguished from the ears obtained by slitting, and both ears were uniformly stained.
  • the hook-and-loop fasteners of Examples 1 to 3 and Comparative Examples 1 to 3 all have the same (Tb)/(Ts) values as described in Examples 1 to 3, respectively, even after dyeing. Ta.
  • Example 1 the fabric for hook-and-loop fasteners was applied along a fixed surface made of stainless steel with a mirror-finished surface installed right next to the exit of the heat treatment furnace while the heat-sealing component remained in a molten state.
  • Example 1 except that the operation of pressing and running, that is, the step 3 above, was not performed, and the weft was wrapped around a roller heated to 180° C. without pressing, after the weft was sufficiently cooled after heat treatment.
  • a loop hook-and-loop fastener with ears was produced in a similar manner.

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)

Abstract

La présente invention concerne un élément de fixation à boucles et crochets en tissu à base de polyester ayant une section d'oreille, configuré de telle sorte que : l'élément de fixation à boucles et crochets a un tissu de base qui est un tissu configuré à partir de chaînes, des fils d'élément de mise en prise entrelacés parallèlement aux chaînes, et des trames, toutes étant constituées de fils à base de polyester, et ayant également de nombreuses éléments de mise en prise en forme de boucle ou en forme de crochet présents sur le côté de surface recto du tissu de base, les éléments de mise en prise étant formés à partir de fils d'élément de mise en prise et dressés à partir de la surface recto du tissu de base ; les trames comprennent un composant thermofusible ; les bases des éléments de mise en prise sont fixées au tissu de base par le composant thermofusible ; et une section d'oreille, dans laquelle aucun élément de mise en prise n'est présent, est présente au niveau de chacune des deux sections d'extrémité du tissu de base qui sont parallèles à une direction de chaîne, l'élément de fixation à boucles et crochets étant caractérisé par la satisfaction des configurations (1) et (2). (1) La longueur dans la direction de l'épaisseur de tissu de base des chaînes qui prennent en sandwich les trames et sont positionnées sur/sous les trames, à un emplacement qui est le plus éloigné vers le bas sur le côté de surface verso, n'est pas supérieure à 0,94 fois la même épaisseur à un emplacement qui est le plus éloigné vers le haut sur le côté de surface recto. (2) Au moins une section d'oreille parmi les sections d'oreille présentes au niveau des deux sections d'extrémité est formée par découpe et retrait des sections de base des éléments de mise en prise.
PCT/JP2023/008341 2022-03-08 2023-03-06 Fermeture à boucles et crochets en tissu à base de polyester ayant une section d'oreille WO2023171616A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005122817A1 (fr) * 2004-06-17 2005-12-29 Kuraray Fastening Co., Ltd. Fermeture velcro en tissu
JP2014027989A (ja) * 2012-07-31 2014-02-13 Kuraray Fastening Co Ltd 耳部を有する面ファスナー
WO2022097593A1 (fr) * 2020-11-06 2022-05-12 クラレファスニング株式会社 Attache auto-agrippante en étoffe en polyester et son procédé de fabrication
WO2022270159A1 (fr) * 2021-06-22 2022-12-29 クラレファスニング株式会社 Fermeture auto-agrippante à base de polyéthylène téréphtalate et son procédé de fabrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005122817A1 (fr) * 2004-06-17 2005-12-29 Kuraray Fastening Co., Ltd. Fermeture velcro en tissu
JP2014027989A (ja) * 2012-07-31 2014-02-13 Kuraray Fastening Co Ltd 耳部を有する面ファスナー
WO2022097593A1 (fr) * 2020-11-06 2022-05-12 クラレファスニング株式会社 Attache auto-agrippante en étoffe en polyester et son procédé de fabrication
WO2022270159A1 (fr) * 2021-06-22 2022-12-29 クラレファスニング株式会社 Fermeture auto-agrippante à base de polyéthylène téréphtalate et son procédé de fabrication

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