TW202320666A - Dyed textile hook-and-loop fastener and method for dyeing textile hook-and-loop fastener - Google Patents

Abstract

This dyed textile hook-and-loop fastener is obtained through supercritical CO2 dyeing of a textile hook-and-loop fastener, is dyed in a deep color, and exhibits a high rupture elongation due to having less thermal history in a dyeing step.

Description

High elongation at break and dark dyed fabric hook and loop

The present invention relates to fabric hook and loop fasteners with high elongation at break and _dark (black) dyeing. Fabric Velcro.

In the current water-based dyeing for dyeing fabric hook and loop fasteners into a dark color (black), a high dyeing temperature of 130 to 135° C. and a long dyeing time of 120 minutes (holding time of 60 minutes) are required. As a result, the yarn constituting the fabric surface fastener becomes hard (the degree of crystallization of the yarn becomes high), and the repeated peeling durability (retention rate) of the dyed fabric surface fastener decreases. This is because the fastening elements of the dyed hook fabric hook and loop become hard, so the degree of damage or breakage of the loop fastening elements of the dyed loop fabric hook and loop increases due to repeated fastening and peeling, and the loop that can be fastened The number of snap-fit elements is reduced. In order to maintain the repeated peeling durability (retention rate) of dyed fabric hook and loop fasteners in a high state, it is necessary to reduce the temperature of the dyeing step, shorten the time, ease the thermal history, and especially reduce the crystallization of the loop fastening elements.

Patent Document 1 discloses a hook and loop fastener made of a polyester fabric dyed with a disperse dye. It is described that the fabric hook and loop is dyed by a "common method" using disperse dyes under the dyeing conditions of a temperature of about 100-150°C and a dyeing time of 10 minutes to 10 hours. In the examples, it is described that dyeing was carried out at 130° C. for 1 hour. The dyeing of polyester fiber products using disperse dyes by "common methods" is dyeing in water-based media. The dyeing used in the above examples is also obviously dyed in water-based media from the perspective of dyeing conditions. .

Patent Document 2 describes a method of dyeing fiber products using disperse dye-dyeable fibers using supercritical CO ₂ as a medium.

Patent Documents 3 to 6 describe dyeing methods of fiber products using supercritical CO ₂ as a medium. [Prior Art Document] [Patent Document]

Patent Document 1: Japanese Invention Patent No. 4690315 Patent Document 2: Japanese Patent Laid-Open No. 2002-363869 Patent Document 3: International Publication No. 2018/150480 Patent Document 4: Japanese Patent Laid-Open No. 2004-323982 Patent Document 5: Japanese Patent Laid-Open No. 2012-188664 Patent Document 6: International Publication No. 2012/105011

[Problem to be solved by the invention]

In water-based dyeing, since the diffusion rate of the dye in the fiber is rate-limited, it is necessary to perform dyeing under the conditions of high temperature and long time as mentioned above. In order to reduce the dyeing temperature or dyeing time, it is necessary to add a large amount of carrier (surfactant, solvent), which has disadvantages such as increased drainage load.

In the water-based dyeing described in Patent Document 1, when the hook and loop fastener is dyed with a disperse dye, the core component of the core-sheath composite fiber is hardly dyed, and as a result, it cannot be dyed into a dark color, and the color fades when exposed to high temperature Big question. Furthermore, since water-based dyeing is carried out under high temperature and long-term dyeing conditions, the yarns constituting the fabric hook and loop are affected by it. As a result, the degree of crystallinity of the yarn becomes high and the yarn becomes hard. Hardened yarn, especially hardened hook fastening elements and loop fastening elements, after repeated fastening/peeling, the loop fastening elements are damaged, broken and the fastening strength of the fabric hook and loop fastener tape is reduced question.

Patent Documents 2 to 6 do not describe the dyeing of fabric hook and loop fasteners by supercritical CO ₂ dyeing. Also, there is no review at all regarding the above-mentioned problems when dyeing fabric hook and loop fasteners by aqueous dyeing. [Means to solve the problem]

The inventors of the present invention have devoted themselves to examining the problem points when dyeing fabric hook and loops by means of aqueous dyeing, and found that: if supercritical _CO2 dyeing (for example, dyeing temperature 120 ° C, pressure 25 MPa, dyeing time 30 Minutes) Dye the fabric hook and loop, then it can be dyed into a dark color. Furthermore, it was found that if the fabric hook and loop is dyed with supercritical _CO2 dyeing, the crystallization degree of the fastening element fibers constituting the fabric hook and loop can be avoided from significantly increasing, and the fracture of the fastening element fibers after dyeing can be avoided. The elongation is significantly increased. As a result, compared with the water-based dyed fabric hook and loop, the fastening force of the dyed fabric hook and loop is greatly improved. The present invention is based on these knowledge insights.

That is, the present invention improves the following dyed fabric hook and loop fasteners and the dyeing method of the fabric hook and loop fasteners.

1. A dyed fabric hook and loop fastener, which comprises a fabric base fabric made of warp yarns and weft yarns and a plurality of fastening elements standing up from one surface of the base fabric, The aforementioned fastening elements are loop fastening elements, hook fastening elements or both, The aforementioned hook-shaped fastening elements are formed of hook-shaped fastening element yarns woven into the aforementioned base fabric parallel to the warp yarns, The aforementioned loop fastening elements are formed of loop fastening element yarns woven into the aforementioned base fabric parallel to the warp yarns, The aforementioned warp yarns contain polyethylene terephthalate-based polyester, The aforementioned yarn for hook-shaped fastening elements comprises polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester, The aforementioned loop fastening element yarn comprises polyethylene terephthalate polyester or polybutylene terephthalate polyester, The weft yarn comprises a core-sheath heat-sealable fiber having a heat-sealable low-melting point polyester resin as a sheath component and a polyethylene terephthalate-based polyester as a core component, The root of the aforementioned fastening element is welded to the melted sheath component and fixed to the aforementioned base fabric, The sheath components and core components and fastening elements of the warp and weft yarns mentioned above are dyed with disperse dyes, and further satisfy the following conditions (1) to (3); (1) There is a disperse dye inside the core component of the aforementioned core-sheath type heat-fusible fiber, (2) The elongation at break of the aforementioned hook-shaped fastening elements is 27-41%, (3) The elongation at break of the aforementioned ring-shaped fastening element is 35-45%.

2. The dyed fabric hook and loop fastener as described in 1 above, wherein the elongation at break of the aforementioned hook-shaped fastening elements is 27-38%. 3. The dyed fabric hook and loop fastener described in 1 or 2 above, wherein the elongation at break of the aforementioned loop-shaped fastening elements is 35-40%. 4. The dyed fabric hook and loop fastener according to any one of 1 to 3 above, wherein the fastening element is a hook-shaped fastening element, and the degree of crystallization of the fastening element is 62 to 72%.

5. The dyed fabric hook and loop fastener according to any one of 1 to 4 above, wherein the fastening element is a hook-shaped fastening element, and the breaking strength of the fastening element is 4.29 to 4.47 cN/dtex.

6. The dyed fabric hook and loop according to any one of 1 to 3 above, wherein the fastening element is a ring-shaped fastening element, and the degree of crystallization of the fastening element is 75% to 87%.

7. The aforementioned fastening element of the dyed fabric hook and loop fastener described in any one of the aforementioned 1-3 and 6, wherein the aforementioned fastening element is a ring-shaped fastening element, and the breaking strength of the fastening element is 2.01-2.07 cN/ dtex.

8. The dyed fabric surface fastener according to any one of 1 to 7 above, wherein the penetration rate of the sheath component (heat-welded portion) of the core-sheath composite fiber is 70% or less.

9. A dyeing method of a fabric hook and loop, which is to use disperse dyes in supercritical _CO to dye the fabric hook and loop, wherein the fabric hook and loop comprises a fabric base cloth composed of warp yarns and weft yarns and a base cloth from the base cloth A plurality of fastening elements erected on one surface, the aforementioned fastening elements are loop-shaped fastening elements, hook-shaped fastening elements or both, the aforementioned hook-shaped fastening elements are woven into the aforementioned base fabric in parallel with the warp yarns The inner hook fastening elements are formed of yarns, the loop fastening elements are formed of loop fastening elements woven into the base fabric parallel to the warp yarns, the warp yarns comprising polyethylene terephthalate Diester-based polyester, the aforementioned yarn for hook-shaped fastening elements includes polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester, and the aforementioned yarn for loop-shaped fastening elements includes polyethylene terephthalate-based polyester. Ethylene phthalate-based polyester or polybutylene terephthalate-based polyester, the aforementioned weft yarns include heat-sealable low-melting-point polyester resin as a sheath component and polyethylene terephthalate-based polyester In the core-sheath heat-sealable fiber as the core component, the root of the fastening element is welded to the melted sheath component and fixed to the base fabric. [Effect of Invention]

Compared with water-based dyeing, supercritical CO ₂ dyeing is carried out at a lower dyeing temperature of about 15°C and a shorter dyeing time of about 30 minutes. Even if it is dyed under such mild conditions, in the supercritical CO ₂ dyed fabric hook and loop of the present invention, since the dye is supplied to the inside of the yarn and is dyed, the sheath component (thermal fusion component), the core component, etc. etc. are also dyed dark (black). Therefore, the dyed fabric hook and loop of the present invention has less color fading on the back under high temperature than the dyed fabric hook and loop dyed by water system. The amount of dye attached to the inside of the yarn is increased, so compared with the dyed fabric hook and looper tape dyed by water, the surface (the surface where the fastening elements exist) at high temperature has less color fading. In addition, because the dyeing temperature is low and the dyeing time is short, the influence of heat on the yarn constituting the fabric hook and loop is alleviated, so the crystallinity of the dyed yarn is lower than that of water-based dyeing. As a result, the hardness of the yarn is relaxed, the breaking strength of the yarn is lowered and the breaking elongation is increased. Therefore, compared to the water-based dyed fabric hook and loop fastener, the loop fastening element is less damaged, and the hook fastening element and the loop fastening element are softened, so the hook fastening element can easily enter the loop fastener between the fastening elements, and because the loop fastening elements are also easy to move freely, so one hook fastening element can catch more filaments in the loop fastening elements, tensile shear strength, peel Strength and repeated peeling durability (retention rate) are improved.

[Mode for Carrying Out the Invention]

The dyed fabric hook and loop of the present invention is obtained by dyeing the fabric hook and loop with disperse dyes in a supercritical CO ₂ medium.

The supercritical CO ₂ dyeing is performed using, for example, a well-known dyeing apparatus including a pressure vessel set with three beam-type dyeing tanks (pipes) and one CO ₂ storage tank. The agitation is of internal circulation type, and circulation pumps are installed in the respective dyeing tanks. The length of the warp beam is about 2m, and the length of the dyeing tank is about 9m. At least one through hole of 3mm width×3mm length in the warp beam is set in the range of 200mm width×800mm length. Supercritical CO ₂ is circulated through through holes in the shaft. In the supercritical CO ₂ circulation method, there are two directions of circulation from the inside to the outside of the warp beam, and two directions of circulation from the inside to the outside and from the outside to the inside, and the circulation method is switched according to the state of the fabric. The warp beam wrapped with the fabric hook and loop tape is put into the dyeing tank, and the supercritical CO ₂ dissolved with the disperse dye (the concentration of the disperse dye is usually 10 ^-6 ~0.2mol/L) flows through the warp beam. Supercritical CO ₂ and disperse dyes pass through the through holes and circulate to the inside and outside of the warp beam to penetrate the fabric hook and loop. In this way, the disperse dye is transported to the inside of the fiber of the fabric hook and loop by supercritical CO ₂ , and the yarn of the fabric hook and loop is dyed to obtain the dyed fabric of the fabric hook and loop of the present invention. After dyeing, new liquefied CO ₂ is sent into the device, and the used supercritical CO ₂ in which the remaining disperse dye is dissolved is transferred to the separation device. Reduce the pressure in the separation device to vaporize CO ₂ and separate and recover the remaining disperse dyes. About 95% of the gasified CO ₂ is recovered and returned to the storage tank as liquefied CO ₂ to be reused in the next batch. After the used supercritical _CO2 is transferred to the separation device, the pressure of the dyeing tank is returned to atmospheric pressure, while the temperature is lowered, and the dry dyed fabric hook and loop is removed from the dyeing process. The supercritical CO ₂ dyeing device consumes only disperse dyes while reusing CO ₂ , so it is a device that can evenly dye the fabric hook and loop into a single color without color spots.

The disperse dyes used in supercritical _CO2 dyeing can use benzoazo series (monoazo and disazo), heterocyclic azo series (thiazolylazo, benzothiazoleazo, pyrenone azo, pyrazolone azo) Nitrogen, thiophene azo, etc.), anthraquinone-based, condensation-based (quinophalone, styryl, coumarin, etc.) and other commercially available products.

The critical temperature of CO ₂ is 31° C., and the critical pressure is 7.38 MPa. Therefore, supercritical CO ₂ can be obtained by setting the temperature above the critical temperature and the pressure above the critical pressure. In order to obtain sufficient dyeability, the dyeing temperature is preferably 110-130°C, more preferably 115-130°C, and most preferably 115-125°C. The dyeing pressure is preferably 20-30 MPa. The dyeing time is preferably 10 to 50 minutes.

Since the dyeing is completed in a short time, it is particularly preferable to keep the temperature at 120° C. and the pressure at 25 MPa for 30 minutes for dyeing.

The properties of the dyed fabric surface fastener of the present invention obtained as described above will be described below. The following properties were measured by the methods described in the examples.

Crystallinity As mentioned above, supercritical CO ₂ dyeing is carried out under milder conditions (lower temperature, shorter time) than aqueous dyeing. Therefore, the fabric hook and looper of the present invention is subjected to less heat history, and the yarn in the dyed fabric hook and loop shows a lower degree of crystallization than that of water-based dyeing. The degree of crystallization of the hook fastening elements of dyed hook-shaped fabric hook and loop fasteners is preferably 62-72%, more preferably 65-72%, and the crystallinity of the loop-shaped fastening elements of dyed loop-shaped fabric hook and loop fasteners Preferably it is 75-87%, more preferably 78-82%. The method for measuring the degree of crystallinity will be described later.

tensile properties As mentioned above, the yarn in the hook and loop fastener of the dyed fabric of the present invention exhibits a lower degree of crystallinity than in the case of aqueous dyeing. Therefore, compared with the case of water-based dyeing, the fastening element has lower hardness, lower breaking strength, and larger breaking elongation and breaking length. By having such stretch properties, the monofilaments in the loop fastening elements are less damaged, and the hook fastening elements are easy to catch several monofilaments. As a result, the dyed fabric hook and loop fastener has high fastening strength. The elongation at break of the hook fastening element of the dyed hook fabric hook and loop fastener is preferably 27-41%. The elongation at break of the loop fastening element of the dyed loop fabric hook and loop fastener is preferably 35-45%. The breaking strength of the hook fastening element of the dyed hook-shaped fabric hook and loop is preferably 4.29-4.47cN/dtex, more preferably 4.35-4.47cN/dtex, and the loop-shaped fastening element of the dyed loop-shaped fabric hook and loop is preferred. The breaking strength is preferably from 2.01 to 2.07 cN/dtex, more preferably from 2.03 to 2.07 cN/dtex. The methods for measuring elongation at break and strength at break are described below.

Dyeing property Compared with water-based dyeing, in supercritical CO ₂ dyeing, dye can be supplied to the inside of the fiber. Therefore, the dyed fabric hook and loop is dyed to a darker color, and the core and sheath components of the weft yarn are also dyed. In particular, the disperse dye penetrates into the inside of the core component and is stained inside the core component. Also, the disperse dye invades the inside of the hook-shaped fastening element, and is attached to the part outside the range of 65.0±10.0% from the center, that is, in the cross-section of the hook-shaped fastening element, preferably from the surface toward the center to the radius The part up to 25.0%, more preferably the part from the surface towards the center to 45.0% of the radius. In the hook and loop fastener of the dyed fabric of the present invention, the sheath component (thermally welded portion) has a penetration rate of 70% or less and is uniformly dyed. The transmittance is preferably less than 70%, more preferably less than 50%. The measurement methods of dyeing property and penetration rate are described later.

Fastening strength of dyed fabric hook and loop As mentioned above, the dyed fabric hook and loop dyed with supercritical CO ₂ receives less heat history, so the crystallization of the yarn constituting the fabric hook and loop is less than that of water-based dyeing. Low degree, low breaking strength, breaking elongation and breaking growth. When the degree of crystallization of the hook element and the loop element is low, the hardness of the hook element and the loop element decreases, and the hook element becomes easy to grasp the loop element. As a result, tensile shear strength (shear strength) and peel strength (peel strength) were improved compared to the case of water-based dyeing. The initial tensile shear strength of the dyed fabric hook and loop of the present invention is preferably 4.9-11.5 N/cm ² , and the initial peel strength is preferably 0.77-1.31 N/cm. The so-called "initial" refers to the first measurement of tensile shear strength and peel strength after manufacture. Even if the fastening/peeling of the dyed fabric of the present invention is repeated, the decrease in tensile shear strength and peeling strength is less than in the case of water-based dyeing. As mentioned above, compared with the case of water-based dyeing, since the degree of crystallization is low, the hardness of the hook fastening elements and the loop fastening elements is lowered, and the length of the loop fastening elements due to the repetition of fastening/peeling The damage and cutting of the threads decreased, which is considered to be because one hook fastening element catches more filaments in the loop fastening element. The tensile shear strength after 5,000 fastening/peeling repetitions of the dyed fabric hook and loop of the present invention is preferably 4.0-11.0 N/cm ² , and the peeling strength after 5,000 fastening/peeling repetitions is preferably 0.55- 1.15N/cm. The methods for measuring the tensile shear strength, peel strength and the tensile shear strength and peel strength after 5,000 fastening/peeling repetitions are described later.

Sublimation fastness at high temperature Compared with water-based dyeing, supercritical CO ₂ dyeing also dyes the sheath components (welded parts) and core components of the warp and weft yarns, so even if exposed to high temperatures, it is dyed Hook and hook fabrics The back side of the dyed loop fabric hook and loop (the side where the fastening elements do not exist) has little color fading at high temperatures, and the back side has excellent sublimation fastness above 160°C, preferably 160-200°C. In addition, not only the sheath component (welded part) and the core component of the weft yarn are dyed, but also the loop fastening element is dyed, and the disperse dye is dyed inside the hook fastening element, so dyeing hook and loop fasteners is not the same as dyeing. The surface of the loop-shaped fabric hook and loop fastener (the surface where the fastening elements exist) has little color fading at high temperatures, and the surface has excellent sublimation fastness above 160°C, preferably 160-200°C. The method of measuring the fastness to sublimation is described later.

Hereinafter, the fabric hook and loop fastener used in the present invention (hook-shaped fabric hook and loop, loop fabric hook and loop, hook/loop mixed type fabric hook and loop) is described, but the fabric hook and loop fastener used in the present invention are not limited by them.

Hook-shaped fabric hook-and-loop fasteners On one surface of the base fabric of the hook-shaped fabric hook-and-loop fasteners used in the present invention, there are a plurality of hook-shaped fastening elements comprising monofilaments, preferably 30-120 pieces/cm ² . The hook-shaped fastening element is obtained by weaving monofilament yarn into the base fabric in a loop shape, heating to fix the loop shape, and cutting off the single leg of the loop.

The base fabric is preferably a fabric woven from warp yarns, weft yarns and monofilament yarns for hook fastening elements. Especially good for: The warp and weft yarns are both multifilament yarns, and the weft yarns are thermally weldable. The hook fastening elements are woven into the fabric with monofilament yarns parallel to the warp yarns, the hook fastening elements are formed from loops of monofilament yarn across several warp yarns, and The root of the hook fastening element is fixed to the base fabric by welding with the weft yarn. In addition, in the present invention, the heat-sealability refers to the property of softening by heating. More specifically, it means that heat-fusible fibers are softened when heated above a certain temperature, and fibers in close contact with the fibers are fused.

From the point of view that the surface of the base fabric does not fluctuate due to heat, water absorption, or moisture absorption, and from the point of view of improving the heat-sealability of the weft yarn, it is preferable that the warp yarn is substantially made of polyethylene terephthalate-based polyester. (including recycled (recycle) polyethylene terephthalate polyester) composed of multifilament yarn. More preferred are multifilament yarns formed from polyethylene terephthalate homopolymers, including recycled polyethylene terephthalate homopolymers. The melting point of polyethylene terephthalate-based polyester and polyethylene terephthalate homopolymer is preferably 250-260°C.

The polyethylene terephthalate-based polyesters described above and below are polyesters mainly composed of ethylene terephthalate units, which are mainly obtained by the condensation reaction of terephthalic acid and ethylene glycol. If necessary, a small amount of polymerized units other than terephthalic acid or ethylene glycol may be added to the ester. Examples of such polymer units include aromatic dicarboxylic acids such as isophthalic acid, sodium sulfoisophthalate, phthalic acid, and naphthalene dicarboxylic acid; aliphatic dicarboxylic acids such as adipic acid and sebacic acid; Dicarboxylic acids; diols such as propylene glycol and 1,4-butanediol; hydroxycarboxylic acids such as hydroxybenzoic acid and lactic acid; monocarboxylic acids such as benzoic acid, etc. In addition, a small amount of other polymers may be added to the above-mentioned polyethylene terephthalate-based polyester. The polyethylene terephthalate-based polyester is preferably a polyethylene terephthalate homopolymer. The monofilament forming the warp (multifilament yarn) must be formed of polyethylene terephthalate-based polyester that does not melt at the heat treatment temperature described later. The melting point of the polyethylene terephthalate-based polyester forming the warp is preferably 250 to 260°C.

The multifilament yarn used as the warp preferably contains 20 to 54 monofilaments, and the total decitex is 100 to 300 decitex. Particularly preferred is a multifilament yarn comprising 24 to 48 filaments with a total tex of 150 to 250 deci.

The weft yarn is preferably a thermofusible multifilament yarn. A suitable example of the heat-fusible multifilament yarn is a multifilament yarn obtained by bundling core-sheath type heat-fusible monofilaments in which the sheath component is a heat-fusible component.

If the weft yarn is a heat-sealable multifilament yarn, the monofilament yarn of the hook-shaped fastening element can be firmly fixed to the base fabric. Unlike conventional hook-and-loop hook and loop fasteners, there is no need to apply polyurethane-based or acrylic-based back-coating resin to the hook fabric in order to prevent the monofilament yarn for fastening elements from being pulled out from the base fabric For the back side of the hook and loop base fabric, the steps can be simplified. Furthermore, since the back of the base fabric is not fixed by the back-coated resin, the softness or air permeability of the hook-shaped fabric hook and loop fastener is not impaired. Furthermore, the problem of deterioration of the dyeability of the hook-shaped fabric surface fastener due to the presence of the back-coated resin layer does not occur.

Examples of the above-mentioned core-sheath type heat-sealable multifilament yarn include a sheath component (heat-sealed part) that contains heat that melts at a heat treatment temperature and can firmly fix the root of the monofilament yarn for hook-shaped fastening elements to the base fabric. Fusible polyester-based resin, a multifilament yarn in which a plurality of core-sheath monofilaments of a polyester-based resin that does not melt at a heat treatment temperature are included as a core component is bundled as a suitable example.

As a specific example of the core-sheath multifilament yarn, polyethylene terephthalate (including recycled polyethylene terephthalate) is used as the core component, and a large amount (for example, 20 to 30 Mo Ear%) Copolymerized polyethylene terephthalate (including recycled copolymerized polyethylene terephthalate) whose melting point or softening point is greatly lowered by copolymerizing the copolymerization component of isophthalic acid, adipic acid, etc. A core-sheath monofilament yarn as a sheath component. Preferably, the melting point or softening point of the sheath component is 100-200°C, and is 20-150°C lower than the melting point of the warp yarn, the core component, and the monofilament for hook fastening elements. The cross-sectional shape of the core-sheath heat-sealable fiber may be a concentric core-sheath, an eccentric core-sheath, a single-core core-sheath, or a multi-core core-sheath.

It is preferable that all the multifilament yarns constituting the weft are the above-mentioned heat-sealable multifilament yarns, since the base fabric can be strongly fixed to the hook-shaped fastening elements by the monofilament yarns. In the case where the multifilament yarn constituting the weft yarn does not have a cross-sectional shape of the core sheath, but the entire cross-section is a filament yarn formed of a heat-sealable polymer, the melted and re-solidified heat-sealable polymer system is easily brittle and cracked. In the case of sewing, etc., the base fabric is likely to be torn from the seam portion. Therefore, the heat-sealable multifilament yarn preferably includes a core component that is not heat-sealed, and preferably has a core-sheath cross-sectional shape. The mass ratio of the core component to the sheath component is preferably from 50:50 to 80:20, more preferably from 55:45 to 75:25.

The weft yarn is preferably a multifilament yarn comprising 10 to 72 heat-sealable monofilament yarns with a total tex of 80 to 300 decitex, particularly preferably 18 to 36 heat-sealable monofilament yarns. The total tex of the silk yarn is a multifilament yarn of 90 to 200 tex.

The resin for forming monofilament yarns for hook fastening elements, preferably polyethylene terephthalate polyester (including recycled polyethylene terephthalate polyester or polybutylene terephthalate) Polyester, more preferably polyethylene terephthalate polyester (including recycled polyethylene terephthalate polyester), especially polyethylene terephthalate homopolymer (including recycled polyethylene terephthalate homopolymer). Details of the polyethylene terephthalate-based polyester are as above. The so-called polybutylene terephthalate polyester is a polyester mainly composed of butylene terephthalate units, which is mainly obtained from the condensation reaction of terephthalic acid and 1,4-butanediol. Esters, if necessary, a small amount of polymerized units other than terephthalic acid or 1,4-butanediol may be added. Examples of such polymer units include aromatic dicarboxylic acids such as isophthalic acid, sodium sulfoisophthalate, phthalic acid, and naphthalene dicarboxylic acid; aliphatic dicarboxylic acids such as adipic acid and sebacic acid; Dicarboxylic acids; diols such as ethylene glycol and propylene glycol; hydroxycarboxylic acids such as hydroxybenzoic acid and lactic acid; monocarboxylic acids such as benzoic acid, etc. Furthermore, to the above-mentioned polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester, in addition to them, a small amount of polyester-based elastomer or polyethylene terephthalate may also be added. Polymers such as propylene formate are added in an amount of, for example, 0.2 to 8% by mass. The melting point of polyethylene terephthalate-based polyester is preferably 250-260°C, and the melting point of polybutylene terephthalate-based polyester is preferably 220-230°C.

The thickness of the monofilament yarn for hook-shaped fastening elements is preferably 0.10-0.23 mm in diameter from the viewpoint of both fastening strength and soft touch, more preferably 0.14-0.20 mm in diameter.

From the above-mentioned warp yarn, weft yarn and monofilament yarn for hook-shaped fastening elements, weave a fabric for hook-shaped fabric hook and loop fasteners. The weave structure of the fabric is preferably a plain weave in which a monofilament yarn for hook fastener elements is used as a part of the warp. It is preferable that the monofilament yarn for hook fastener elements exists in parallel with the warp yarn, and it stands up from the base fabric surface in the middle of weaving, and several monofilament yarns straddle the warp yarn to form the loop for hook fastener elements.

The preferred weaving density of warp yarns after heat treatment is 50-90 yarns/cm, and the weaving density of weft yarns is preferably 15-25 yarns/cm after heat treatment. The mass ratio of the weft yarn is preferably 10 to 45% relative to the total mass of the hook fastening element yarn, warp yarn and weft yarn constituting the hook-shaped fabric hook and loop fastener.

The number of inserted monofilament yarns for hook fastening elements is preferably 3 to 6 relative to 20 warp yarns (including monofilaments for hook fastening elements). More preferably, it is a ratio of 1 monofilament for hook fastener elements to 5 warp yarns (including the monofilament yarn for hook fastener elements). It is preferable that the monofilament yarn for hook fastener elements is uniformly driven in so that the warp yarn is not deviated to any one direction. Therefore, it is preferable that the monofilament yarns for hook fastening elements exist on the left and right sides of the four warp yarns.

The hook fastening element uses monofilament yarn parallel to the warp yarn and weaves into the fabric base fabric every 4 warp yarns, floats 5 weft yarns and then floats on the weft yarn, and crosses 3 warp yarns and 1 weft yarn to form a hook buckle Rings for fastening components are preferable because they can satisfy both fastening strength and peeling durability. The loop-forming monofilament system then floats 5 weft yarns, floats on the weft yarn, crosses 3 warp yarns and 1 weft yarn to form a loop, sinks under the warp yarn and weft yarn, and repeats it. It is better to weave .

The thus obtained fabric for hook and loop fasteners is then heat-treated to melt the sheath component of the core-sheath heat-sealable multifilament yarn constituting the weft. This eliminates the need for back-coating of the hook-shaped fabric hook and loop, and prevents the following problems: deterioration of the workplace environment or adhesion of the back-coating resin solution due to transpiration of the organic solvent used for the back-coating resin solution Problems in manufacturing devices, such as the problem that the back-coated resin impairs the softness or air permeability of the hook-shaped fabric hook and loop fastener, and the existence of the back-coated resin impairs the dyeability of the hook-shaped fabric hook and loop fastener.

The heat treatment temperature is to melt or soften the sheath component of the heat-fusible multifilament yarn, but it is preferably 150-220° C., more preferably 185-210° C., at which loops, warp yarns, and core components for hook fastening elements do not melt. Furthermore, by this heat treatment, since the hook-shaped fastening element is fixed in the shape of the loop, even if one leg of the loop is cut off, the hook shape can be maintained.

It is preferable that 30 to 120 loops/cm ² of loops for hook fastening elements whose shape is fixed exist on the surface of the hook-shaped surface fastener fabric obtained in this way. Next, the one leg of the loop for hook fastener elements was cut off, and the hook fastener elements were obtained. The amputation of a single foot is usually performed by a hair clipper or the like. The cutting of one foot is to cut off the part that is slightly offset from the top of the loop to one side of the foot, that is, when the height of the loop from the base fabric surface to the top is taken as 1, it is If the height is close to the top of more than 2/3, and at the part that is slightly offset from the top, if the loop is cut, it is tied at a higher height to prevent fibrils caused by frequent fastening and peeling of hook-shaped fastening elements. It is more appropriate in terms of chemicalization.

The density of the hook fastening elements on the surface of the thus obtained hook fabric surface fastener is preferably 25-125 hook fastening elements/cm ² based on the portion of the base fabric where the hook fastening elements exist. Also, the height of the hook fastening elements is preferably 1.0 to 2.5 mm from the surface of the base fabric.

Loop-shaped fabric hook and loop tape On one surface of the base fabric of the loop-shaped fabric hook and loop fastener used in the present invention, there are a number of loop-shaped fastening elements, preferably 30-120 pieces/cm ² . The base fabric is preferably a fabric woven from warp yarns, weft yarns and loop fastening element yarns.

In addition, warp yarns, weft yarns, and yarns for loop fastening elements are all multifilament yarns, and weft yarns have thermal fusion properties. It is particularly preferable that the loop fastening element is formed by crossing one weft yarn without crossing the warp yarn, and the root of the loop fastening element is fixed to the base fabric by welding with the weft yarn.

From the point of view that the surface of the base fabric does not fluctuate due to heat, water absorption, or moisture absorption, and from the point of view of improving the heat-sealability of the weft yarn, it is preferable that the warp yarn is substantially made of polyethylene terephthalate-based polyester. (including recycled polyethylene terephthalate polyester). More preferred are multifilament yarns formed from polyethylene terephthalate homopolymers, including recycled polyethylene terephthalate homopolymers. Details of the polyethylene terephthalate-based polyester are as above.

The multifilament yarn used as the warp is preferably composed of 20 to 54 monofilaments, and the total tex is 100 to 300 defens. Particularly preferred is a multifilament yarn comprising 24 to 48 filaments with a total tex of 150 to 250 deci.

The weft yarn is preferably a thermofusible multifilament yarn. A suitable example of the heat-fusible multifilament yarn is a multifilament yarn in which core-sheath type heat-fusible monofilaments having a sheath component as a heat-fusible component are bundled.

If the weft yarn is a heat-sealable multifilament yarn, the loop fastening element yarn can be firmly fixed to the base fabric. Unlike conventional loop-shaped fabric hook and loop fasteners, there is no need to apply polyurethane or acrylic back-coated resin to the loop-shaped loops in order to prevent the yarn for loop-shaped fastening elements from being pulled out from the base fabric. For the back of the fabric hook and loop base fabric, the steps can be simplified. Furthermore, since the back of the base fabric is not fixed by the back-coated resin, the softness or air permeability of the loop-shaped fabric hook and loop is not impaired. Furthermore, the problem of impairing the dyeability of the loop fabric hook and loop fastener due to the presence of the back-coated resin layer can be prevented.

Examples of the above-mentioned core-sheath heat-sealable multifilament yarn include heat-sealed yarns in which the sheath component (heat-sealed part) is melted at a heat treatment temperature and the root of the monofilament yarn for loop fastening elements can be firmly fixed to the base fabric. A suitable example is a multifilament yarn in which a plurality of sheath-type monofilaments of a core-sheath type made of a polyester resin that does not melt at a heat treatment temperature are bundled as a core component. Examples of the above-mentioned core-sheath heat-sealable multifilament yarn include a heat-sealable polyester-based resin whose sheath component is melted at a heat treatment temperature and can firmly fix the roots of the monofilament yarn for hook fastening elements to the base fabric. A suitable example is a multifilament yarn in which a plurality of core-sheath monofilaments bundled together include a polyester resin that does not melt at a heat treatment temperature as a core component.

As a specific example of the core-sheath multifilament yarn, polyethylene terephthalate (including recycled polyethylene terephthalate) is used as the core component, and a large amount (for example, 20 to 30 Mo Ear%) Copolymerized polyethylene terephthalate (including recycled copolymerized polyethylene terephthalate) whose melting point or softening point is greatly lowered by copolymerizing the copolymerization component of isophthalic acid or adipic acid, etc. A core-sheath type polyester monofilament yarn as a sheath component. Preferably, the melting point or softening point of the sheath component is 100-200°C, and is 20-150°C lower than the melting point of warp yarn, core component, monofilament for hook fastening elements, and multifilament yarn for loop fastening elements. The cross-sectional shape of the core-sheath heat-sealable fiber may be a concentric core-sheath, an eccentric core-sheath, a single-core core-sheath, or a multi-core core-sheath.

It is preferable that all of the multifilament yarns constituting the weft yarns are the above-mentioned core-sheath type thermally fusible monofilament yarns because the loop fastening elements can be firmly fixed to the base fabric with the yarns. In the case where the multifilament yarn constituting the weft is formed only of heat-sealable polymers, the melted and re-solidified heat-sealable polymers tend to be brittle, so the base fabric is easy to tear from the seam portion when it is sewn. split. Therefore, the heat-sealable monofilament yarn preferably contains components that are not heat-sealed, and more preferably has a core-sheath cross-sectional shape. The mass ratio of the core component to the sheath component is preferably from 20:80 to 80:20, more preferably from 75:25 to 55:45.

The weft yarn is preferably a multifilament yarn comprising 10 to 72 heat-sealable monofilament yarns with a total tex of 80 to 300 decitex, particularly preferably 18 to 36 heat-sealable monofilament yarns. The total tex of the silk yarn is a multifilament yarn of 100 to 240 tex.

The yarn for loop fastening elements is preferably a multifilament yarn bundled with 6 to 12 monofilaments of 32 to 45 tex, more preferably 6 to 9. The resin for forming the multifilament yarn for loop fastening elements is preferably polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester, more preferably polyethylene terephthalate polyester (including recycled polyethylene terephthalate polyester). Details of polyethylene terephthalate-based polyester and polybutylene terephthalate-based polyester are as above.

From the above-mentioned warp yarns, weft yarns and multifilament yarns for loop fastening elements, fabrics for loop-shaped hook and loop fasteners are woven. The weave structure of the fabric is preferably a plain weave in which a multifilament yarn is used as a loop fastening element as a part of the warp. It is preferable that the multifilament yarn for the loop fastening element exists parallel to the warp yarn, while standing up from the base fabric surface on the way, without crossing the warp yarn, crossing one to several weft yarns, and sinking under the weft yarn And form a circle.

The weaving density of warp yarns is preferably 50-90 yarns/cm after heat treatment, and the weaving density of weft yarns is preferably 15-25 yarns/cm after heat treatment. The mass ratio of the weft yarn is preferably 10 to 45% relative to the total mass of the loop fastening element yarns, warp yarns and weft yarns constituting the loop fabric hook and loop fastener.

The number of inserted multifilament yarns for loop fastening elements is preferably 3 to 6 relative to 20 warp yarns (including multifilament yarns for loop fastening elements). More preferably, one multifilament yarn for loop fastening elements is used for five warp yarns (including the multifilament yarn for loop fastening elements). It is preferable that the yarn for a loop fastening element is uniformly driven in so that a warp yarn may not deviate to any one direction. Therefore, it is preferable that the multifilament yarns for loop fastening elements exist on the left and right sides of the four warp yarns.

In the loop fabric hook and loop fastener, the loop fastening elements are arranged side by side in a row in the warp direction (MD direction), and such rows exist in plural parallel to the weft direction (CD direction). The weft yarns spanned by the loop fastening elements of one row are different from the weft yarns spanned by the loop fastening elements of the adjacent row, so that the peeling force can be prevented from being concentrated on a specific weft yarn, and the peeling durability is improved as a result.

Especially in the present invention, the loop-shaped fastening element is woven in every 4 warp yarns parallel to the warp yarns, and floats on the weft yarns after the 5 weft yarns are floated, and the buckle is formed by crossing 1 weft yarn. Rings for fastening elements are preferable because they can satisfy both fastening strength and peeling durability.

The thus obtained loop surface fastener fabric is then heat-treated to melt the sheath component of the core-sheath heat-sealable multifilament yarn constituting the weft. Thereby, the back-coating process of the conventional loop-shaped fabric hook and loop is unnecessary, and the following problems can be prevented: the deterioration of the workplace environment caused by the evaporation of the organic solvent used for the back-coating resin liquid or the adhesion of the back-coating resin liquid to the surface. The problem of manufacturing equipment, etc., the problem that the softness or air permeability of the loop fabric hook and loop fastener is impaired by the back coating resin, and the existence of the back coating resin will impair the dyeability of the loop fabric hook and loop fastener. The heat treatment temperature is preferably 150-220°C, more preferably 185-210°C, at which the sheath component of the heat-fusible multifilament yarn melts or softens but the loops, warp yarns, and core components for loop fastening elements do not melt.

The loop is naturally twisted by the heat during heat treatment so that the loop surface crosses the warp direction. Especially in the case of a multifilament yarn bundled with a small number of thick monofilaments as described above, when the loops are formed without straddling the warp yarns, twisting occurs and the loop surfaces tend to intersect with the warp direction. In particular, in the case where the loop fastening element yarn does not cross over the warp and forms a loop shape by crossing one weft yarn, it is easy to be twisted so that the loop surface tends to intersect with the warp direction.

In the case where the loop surface crosses the warp direction, uniform fastening with the hook-shaped fastening elements occurs easily. Furthermore, by brushing the surface of the loop fastening element with the card clothing, the loop fastening element is not cut off, and it is easy to separate into individual filaments (easy to shed).

The density of the loop fastening elements in the loop fabric hook and loop fastener is preferably 25-125 pieces/cm ² based on the portion of the base fabric where the loop fastening elements exist. Also, the height of the loop fastening elements is preferably 1.5-3.5 mm from the surface of the base fabric.

It is better to improve the peeling durability by rubbing the surface of the loop fastening element with a card clothing or the like to separate the multifilament yarn forming the loop fastening element into individual filaments (to loosen the fluff).

Hook/loop hybrid fabric hook and loop Hook/loop mixed-type fabric hook and loop (hereinafter also referred to as "mixed-type fabric hook and loop") is a fabric hook and loop fastener with hook-shaped fastening elements and loop-shaped fastening elements on the same side of the base fabric. The hook-shaped fastening element of the hook/loop mixed-type fabric hook and loop (hereinafter also referred to as "mixed-type fabric hook and loop") requires rigidity and the shape of the hook does not stretch when the force is light, that is, the so-called hook shape Retention, so thick synthetic fiber monofilament is used. As such a monofilament, in particular, polybutylene terephthalate polyester or polyethylene terephthalate polyester (including recycled polyethylene terephthalate polyester) excellent in hook shape retention is used. Polyester) formed monofilament. Details of polyethylene terephthalate-based polyester and polybutylene terephthalate-based polyester are as above.

The thickness of the monofilament yarn for hook-shaped fastening elements is preferably 0.10-0.25 mm in diameter so that hook-shaped fastening elements can be easily formed, more preferably 0.12-0.22 mm in diameter. The thickness is slightly thinner than that of the hook-shaped fastening elements of conventional fabric hook and loop fasteners, but this fineness imparts softness to the hook-and-loop hybrid fabric hook and loop fasteners.

The height of the hook-shaped fastening element is preferably 1.5-3.0 mm, more preferably 1.8-2.5 mm.

The density of the hook-shaped fastening elements is preferably 15-50 pieces/cm ² , more preferably 20-40 pieces/cm ² .

The loop fastening element is preferably a multifilament yarn comprising a monofilament formed of polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester. Details of polyethylene terephthalate-based polyester and polybutylene terephthalate-based polyester are as above.

The multifilament yarn for loop fastening elements is preferably a multifilament yarn comprising 5 to 9 monofilaments and having a total tex of 150 to 350 tex. In order to securely fix the loop fastening element to the base fabric by thermal welding described later, it is better to have fewer monofilaments. Therefore, a single multifilament yarn for the loop fastening element of the mixed-type fabric hook and loop is formed. The number of filaments is slightly less than the 10 to 24 monofilaments of the multifilament yarn generally used to form loop fastening elements. More preferably, it is a multifilament yarn comprising 6 to 8 monofilaments and having a total tex of 230 to 330 tex.

The height of the ring-shaped fastening element is preferably 1.6-4.0 mm, more preferably 2.0-3.3 mm. Because of the soft skin feel, it is preferable that the height of the hook-shaped fastening element is 1.5-3.0mm, and the height of the loop-shaped fastening element is 1.6-4.0mm. The height is 0.1-1.0 mm, more preferably the height of the hook-shaped fastening element is 1.8-2.5 mm, the height of the ring-shaped fastening element is 2.0-3.3 mm, and the ring-shaped fastening element is higher than the hook-shaped fastening element 0.2～0.8mm.

The density of the loop fastening elements (multifilament yarn) is preferably 15-50 pieces/cm ² , more preferably 20-40 pieces/cm ² . Furthermore, 100×(number of loop fastening elements)/(number of loop fastening elements+number of hook fastening elements) is preferably 30-70, more preferably 45-55.

Both the monofilament yarns for the hook fastening elements and the multifilament yarns for the loop fastening elements are inserted into the base fabric parallel to the warp yarns. The hook-shaped fastening element uses a monofilament yarn to float several, such as 5, weft yarns, float on the base fabric, and form a loop by crossing several, such as 3-4 warp yarns and several, such as 1-2 weft yarns A loop in which the face crosses the warp direction. In the case of a loop fastening element, a loop formed in such a way that the loop surface is approximately parallel to the warp direction without crossing over the warp is better from the point of view that the hook fastening element is easily hooked on the loop fastening element. should.

The formed hook fastening elements are heat treated with loop and loop fastening element loops to fix the shape of the respective loops. During this heat treatment, heat-sealable fibers (weft yarns) are welded to the roots of the loop fastening elements and loops for hook fastening elements, and the loop fastening elements and loops for hook fastening elements are fixed to the base fabric. The heat treatment temperature is the temperature at which the sheath component of the heat-sealable fiber melts, but the core component of the warp yarn, loop fastening element, loop for hook fastening element, and heat-sealable fiber does not melt, preferably 150-250°C. More preferably, it is 185-220°C.

After heat fixing, the hook fastening element is obtained by cutting off the loop-shaped foot portion on one side of the loop for the hook fastening element. For cutting, it is preferable to use a cutting device having one movable cutting knife that moves back and forth between two fixed knives. However, no movable cutting knife is provided at the part where the ring-shaped fastening element passes. As described above, since the loop for the hook fastening element is formed over the warp, only the leg portion on one side of the loop can be easily cut off. In order not to cut adjacent loop fastening elements, it is preferable to provide at least two rows of loops for hook fastening elements in the warp direction.

As the warp yarn forming the base fabric, it is preferably a multifilament yarn of polyethylene terephthalate polyester (including recycled polyethylene terephthalate polyester) excellent in heat resistance. Under heat treatment conditions, A multifilament yarn of polyethylene terephthalate homopolymer (including recycled polyethylene terephthalate homopolymer) is more preferable because there is little change in shape due to melting, shrinkage, and the like.

The multifilament yarn for warp is preferably a multifilament yarn comprising 12 to 96 monofilaments and a total tex of 75 to 250 tex, more preferably a total tex comprising 24 to 48 monofilaments Si is a multifilament yarn of 100 to 170 points of tex. The multifilament yarn for warp is preferably woven into the base fabric so that the warp yarn weaving density after heat treatment becomes 60 to 90 yarns/cm.

The monofilament yarns for the hook fastening elements and the multifilament yarns for the loop fastening elements are woven into the base fabric parallel to the warp yarns as described above. The total number of injected monofilament yarns for hook fastening elements and multifilament yarns for loop fastening elements, relative to the number of warp yarns 20 (including monofilament yarns for hook fastening elements and loop fastening multifilament yarn for components), preferably 3 to 6 yarns.

The weft yarn forming the base fabric can firmly fix the roots of the monofilament yarn for the hook fastening element and the multifilament yarn for the loop fastening element to the base fabric by heat welding under the above heat treatment conditions, preferably heat welding Sexual multifilament yarn. For example, there may be mentioned a multifilament yarn in which core-sheath type monofilaments are bundled in which the core component does not melt under heat treatment conditions, but the sheath component melts.

As a specific example of the core-sheath type monofilament, polyethylene terephthalate (including recycled polyethylene terephthalate) is used as the core component, and a large amount (for example, 20 to 30 moles) %) Copolymerized polyethylene terephthalate (including recycled copolymerized polyethylene terephthalate) whose melting point or softening point is greatly lowered by copolymerizing the copolymerization component such as isophthalic acid or adipic acid as the sheath The core sheath type polyester monofilament yarn.

The melting point or softening point of the sheath component is 100-200°C, and is preferably 20-150°C lower than the melting point of the core component, warp yarn, monofilament yarn for hook fastening elements, and multifilament yarn for loop fastening elements.

All of the multifilament yarns constituting the weft yarns are the above-mentioned heat-sealable multifilament yarns, since the hook fastening elements and the loop fastening elements are firmly fixed to the base fabric with yarns, so it is preferable. In the case where all the multifilament yarns constituting the weft are formed of only heat-sealable polymers, the melted and re-solidified heat-sealable polymers tend to be brittle, and when sewn, etc., the base fabric is easily torn from the seam. open. Therefore, the heat-sealable multifilament yarn preferably contains a resin component that is not heat-sealed, and more preferably has a core-sheath cross-sectional shape. The weight ratio of the core component to the sheath component is preferably 20:80 to 80:20.

In order to firmly fix the hook-shaped fastening elements and the loop-shaped fastening elements together to the base fabric, it is preferable that the heat-sealable filaments are heat-sealed, and at the same time the heat-sealable filaments themselves are shrunk and fastened from both sides. The base of hook and loop fastening elements. Therefore, it is preferable that the heat-fusible filaments are largely heat-shrinkable under heat treatment conditions. For example, the heat-sealable filament has a dry heat shrinkage rate of preferably 8 to 20%, more preferably 11 to 18%, when heated at 200° C. for 1 minute.

The multifilament yarn for the weft yarn is preferably a multifilament yarn comprising 12 to 72 monofilaments with a total tex of 100 to 300 tex, more preferably a total tex comprising 24 to 48 monofilaments Sri Lanka is a multifilament yarn of 150 to 250 points of tex. The multifilament yarn for weft is preferably woven into the base fabric so that the weaving density after heat treatment becomes 15 to 25 yarns/cm. The weight ratio of the weft yarn is preferably 15 to 40% to the total weight of the monofilament for the hook fastener element, the multifilament yarn for the loop fastener element, the warp yarn, and the weft yarn.

The weave structure of the base fabric is preferably a plain weave in which a monofilament yarn for hook fastening elements and a multifilament yarn for loop fastening elements are part of the warp. The hook-shaped fastening elements are woven in parallel with the warp yarns by the yarn system, then stand up from the base fabric surface, form a loop, fly over 1 to 4 warp yarns, and sneak into the warp yarns. The loop-shaped fastening elements are woven in parallel with the warp yarns, and then stand up from the base fabric surface without crossing the warp yarns, and sneak into the warp yarns to form loops parallel to the warp yarn direction. Such a weave is preferable because it is possible to cut a single leg of the loop for the hook fastening element without damaging the loop of the loop fastening element.

The dyed fabric hook and loop of the present invention can be used for the purposes of using fabric hook and loop in the past, for example, it can be used in shoes, handbags, hats, gloves, clothing, blood pressure monitors, protective gear, straps for binding luggage, straps, Various toys, fixing materials for thin sheets for civil engineering and construction, fixing materials for various panels or wall materials, fixing materials for solar cells on the roof, fixing materials for electrical parts, storage boxes or bag boxes that can be assembled/disassembled freely, small items, A wide range of fields such as curtains. [Example]

Hereinafter, the present invention is illustrated by examples, but the present invention is not limited by these examples.

Manufacturing Example 1: Hook-shaped fabric hook and loop As the yarn for forming the hook fastener tape, the following yarns were used.

Warp Multifilament yarn containing polyethylene terephthalate with a melting point of 260°C Number of filaments: 30 Total tex: 167dtex Number of twists: 602turn/m

Weft yarn: multifilament yarn containing core-sheath composite filaments Core component: Polyethylene terephthalate with a melting point of 260°C Sheath composition: Copolymerized polyethylene terephthalate with 25 mol% of isophthalic acid with a softening point of 190°C Core composition: sheath composition = 70:30 (mass ratio) Number of filaments: 24 Total tex: 99dtex

Yarn for Hook Fastening Elements Monofilament yarn comprising polyethylene terephthalate with a melting point of 260°C Diameter: 0.18mm Manufacture of hook and loop fabric Using the above-mentioned warp yarn, weft yarn, and monofilament yarn for hook fastening elements, a plain-woven fabric for hook and loop fasteners is obtained. The weave density of the warp after the heat treatment was 52/cm (including the monofilament yarn for hook fastener elements), and the weave density of the weft was 18/cm. The monofilament yarn for the hook-shaped fastening element is driven in parallel to the warp yarn in a ratio of 4 warp yarns. The hook fastening element floats 5 weft yarns with monofilament yarn, then floats on the weft yarn, and forms a loop by crossing 1 weft yarn and 3 warp yarns. The loop-forming hook-shaped fastening element is tied with monofilament yarn, and after floating and sinking 5 weft yarns, it floats on the weft yarn, crosses 1 weft yarn and 3 warp yarns to form a loop, and then weaves by returning to the warp yarn.

Heat-treat the obtained fabric for hook and loop fasteners at 205°C for 1 minute at a temperature at which only the sheath component of the weft yarn is thermally fused and the warp yarn, the monofilament yarn for hook-shaped fastening elements, and the core component of the weft yarn are not thermally fused . As a result, the sheath component is melted, and the adjacent existing yarns are fused to the core component of the weft yarn.

Next, the single leg of the loop for the hook-shaped fastening element is cut off at a position 4/5 below the height of the loop of the hook-shaped fastening element to form a hook-shaped fastening element. The hook-shaped fastening element density of the hook-shaped fabric surface fastener obtained was 48 pieces/cm ² , and the height of the hook-shaped fastening element from the base fabric surface was 1.85 mm.

Manufacturing Example 2: Loop Fabric Velcro As the yarn for forming the loop hook and loop fastener, the following yarns were used.

Warp Multifilament yarn containing polyethylene terephthalate with a melting point of 260°C Number of filaments: 36 Total tex: 167dtex Number of twists: 602turn/m

Weft yarn: multifilament yarn containing core-sheath composite filaments Core component: Polyethylene terephthalate with a melting point of 260°C Sheath composition: Copolymerized polyethylene terephthalate with 25 mol% of isophthalic acid with a softening point of 190°C Core composition: sheath composition = 70:30 (mass ratio) Number of filaments: 24 Total tex: 120dtex

Multifilament Yarns for Loop Fastening Elements Multifilament yarn comprising polybutylene terephthalate blended with 5% by mass of polytrimethylene terephthalate Melting point: 220°C Number of filaments: 7 Total tex: 265dtex

Manufacture of Loop Fabric Velcro Using the above-mentioned warp yarn, weft yarn, and multifilament yarn for loop fastening elements, a plain-woven loop fabric for hook and loop fasteners was obtained. After the heat treatment, the weaving density of warp yarns was 55 yarns/cm, and the weaving density of weft yarns was 22 yarns/cm. The multifilament yarn used for the loop fastening element is driven in parallel to the warp yarn without crossing the warp yarn at a ratio of 4 warp yarns. Then, the loop-shaped fastening element floats 5 weft yarns with multifilament yarns, floats on the base fabric, and does not cross the warp yarns, but straddles 1 yarn to form a loop. On the surface of the resulting loop fabric surface fastener, loops are aligned in a row in the warp direction, and a plurality of such rows exist in parallel in the weft direction. Also, there is a weft yarn in which one row of loops spans is located in the middle of the warp direction between two wefts of two loops in the adjacent row. Also, the loop faces of most loop fastening elements are twisted in the warp direction.

Heat-treat the obtained fabric for loop fasteners at 200°C for 1 minute at a temperature at which only the sheath component of the weft yarn is thermally fused and the warp yarn, multifilament yarn for loop fastening elements, and the core component of the weft yarn are not thermally fused . As a result, the sheath component was melted, and the adjacent yarns were fused to the weft yarn. The density of loop fastening elements in the core component was 44 pieces/cm ² , and the height of the loop fastening elements from the surface of the base fabric was 2.40 mm.

Manufacturing Example 3: Hook and loop fabric hook and loop using recycled materials A hook-shaped surface fastener and a loop-shaped surface fastener were produced in the same manner as in Production Examples 1 and 2 except for using yarns containing recycled materials described below.

hook and loop fabric Warp Multifilament yarn comprising recycled polyethylene terephthalate with a melting point of 260°C Number of filaments: 30 Total tex: 167dtex Number of twists: 602turn/m Weft yarn: multifilament yarn containing core-sheath composite filaments Core ingredient: Recycled polyethylene terephthalate with a melting point of 260°C Sheath composition: Copolymerized polyethylene terephthalate with 25 mol% of isophthalic acid with a softening point of 190°C Core composition: sheath composition = 70:30 (mass ratio) Number of filaments: 24 Total tex: 99dtex

Yarn for Hook Fastening Elements Monofilament yarn containing recycled polyethylene terephthalate with a melting point of 260°C

Loop fabric hook and loop Warp Multifilament yarn comprising recycled polyethylene terephthalate with a melting point of 260°C Number of filaments: 36 Total tex: 167dtex Number of twists: 602turn/m Weft yarn: multifilament yarn containing core-sheath composite filaments Core ingredient: Recycled polyethylene terephthalate with a melting point of 260°C Sheath composition: Copolymerized polyethylene terephthalate with 25 mol% of isophthalic acid with a softening point of 190°C Core composition: sheath composition = 70:30 (mass ratio) Number of filaments: 24 Total tex: 120dtex Multifilament Yarns for Loop Fastening Elements Multifilament yarn comprising polybutylene terephthalate blended with 5% by mass of polytrimethylene terephthalate Melting point: 220°C Number of filaments: 7 Total tex: 265dtex

Example 1 Using the above beam-type supercritical CO ₂ dyeing device, the hook-shaped fabric hook and loop fasteners and the loop-shaped fabric hook and loop fasteners obtained in Production Examples 1 and 2 were each dyed dark (black) with disperse dyes. In addition, as a disperse dye, the black dye which mixed the plastic dye "KP PLAST (trade name)" series manufactured by Kiwa Chemical Industry Co., Ltd. at the following ratio was used. KP Plast Orange HG (CI Solvent Orange 60): 45 parts by weight KP Plast Violet R (CI Solvent Violet 31): 25 parts by weight KP Plast Blue G (CI Solvent Blue 78): 30 parts by weight The outline of the dyeing method is shown below. 1. Put the warp beam (beam) wound with the fabric hook and loop tape into the dyeing tank (pipe). 2. Raise the temperature of liquefied CO ₂ to 120° C., and raise the pressure to 25 MPa to become supercritical CO ₂ , and circulate the supercritical CO ₂ . 3. The circulation method is to circulate from the inside of the warp beam through the through holes to the outside of the warp beam. 4. Circulate the supercritical CO ₂ to the dye tank provided in the path, dissolve the dye in the supercritical CO ₂ , and supply the dye to the dye tank. 5. After reaching a temperature of 120°C and a pressure of 25MPa, keep it for 30 minutes. 6. After holding for 30 minutes, supply new liquefied CO ₂ into the device, and transfer the used supercritical CO ₂ in which the residual dye has been dissolved to the separation device. 7. After transferring the used supercritical CO ₂ , cool it down to a temperature lower than 100°C, return the pressure to atmospheric pressure, and take out the dry dyed fabric hook and loop from the dyeing tank.

Example 2 The hook and loop hook and loop fasteners using the recovered materials obtained in Production Example 3 were dyed in the same manner as in Example 1 to obtain dyed hook and loop fabric hook and loop fasteners. .

Example 3 Except for changing the temperature from 120°C to 110°C in "2." and "5." of the outline of the dyeing method, the same operation as Example 1 was performed to obtain dyed hook-shaped fabric hook and loop fasteners. Fabric hook and loop.

Example 4 Except for changing the temperature from 120°C to 130°C in "2." and "5." of the outline of the dyeing method, the same operation as in Example 1 was performed to obtain dyed hook-shaped fabric hook and loop fasteners and dyed loops. Fabric hook and loop.

Comparative Example 2 Except that in "2." and "5." of the outline of the dyeing method, the temperature was changed from 120°C to 100°C, and "7." was changed to the following 7-1., the same as the example was carried out. 1 Do the same operation to obtain dyed hook-shaped fabric Velcro and dyed loop-shaped fabric Velcro. 7-1. After transferring the used supercritical CO ₂ , return the pressure to atmospheric pressure, and take out the dry dyed fabric hook and loop from the dyeing tank.

Comparative example 3 Except for changing the temperature from 120°C to 140°C in "2." and "5." of the outline of the dyeing method, the same operation as Example 1 was performed to obtain dyed hook-shaped fabric hook and loop fasteners. Fabric hook and loop.

Comparative example 1 Except that the hook-shaped fabric adhesive tape and the loop-shaped fabric adhesive tape obtained in Manufacturing Examples 1 and 2 are respectively subjected to water-based dyeing (high-temperature and high-pressure cheese dyeing), in the same manner as in Example 1, dyed hooks dyed into black are obtained. fabric hook and loop and dyed circle fabric hook and loop. Use conventional cheese dyeing machines. The cheese dyeing machine has a cylindrical dyeing tank and a cylindrical carrier put into it. The carrier is a partition having several stages in the height direction. Numerous holes are provided in the partition for sufficient circulation of the staining solution. A roll of the fabric hook and loop fastener is placed on the separator. Put the carrier of multiple clapboards laminated with rolls of fabric hook and loop tape into the dyeing tank, and let the dyeing solution pass through the heater and circulation pump to circulate from above the clapboard, or from bottom to top, Instead, dye the fabric hook and loop. The outline of cheese dyeing is shown below. 1. Store water at room temperature in the dyeing tank, put in dyeing auxiliaries (dispersant, leveling agent, etc.), and let it circulate for 10 minutes. 2. Convolute and layer several fabric hook and loop tapes on the separator of the carrier. 3. Put the carrier into the dyeing tank. 4. After raising the temperature of the water in the dyeing tank to 60° C., the carrier was taken out from the dyeing tank. 5. Put the disperse dye (evening dress black) into the dyeing tank, and put it into the carrier again. 6. Raise the temperature to 135°C, and keep it for 60 minutes after reaching 135°C. 7. After holding for 60 minutes, cool to below 80°C. 8. Drain all the residual liquid in the dyeing tank. 9. Store new water until it overflows the stain tank. 10. Put the carrier into the dyeing tank while allowing it to overflow. 11. Repeat the above steps 8-10 three times to obtain a water-based dyed fabric hook and loop.

Various characteristics of the dyed hook-shaped fabric hook and loop fasteners and dyed loop-shaped fabric hook and loop fasteners obtained in the above-mentioned Examples 1-4 and Comparative Examples 1-3 were measured.

Crystallinity From the dyed hook and loop fabric hook and loop fasteners, about 3 mg of warp yarn, weft yarn, hook fastening elements, and loop fastening elements were collected each, and measured by a differential scanning calorimeter (DSC) Get the DSC curve. By analyzing the DSC curve, the analysis data of the heat, melting point, crystallization temperature, glass transition temperature, etc. of the sample when it absorbs heat and dissipates heat can be obtained. Based on the obtained analytical data, the degree of crystallinity was calculated. In the following tables, the measured values are the average of three measurements. Table 1: Crystallinity (%) Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 measured value measured value measured value measured value measured value measured value measured value Dyed hook and loop hook and loop Warp 52.2 59.0 64.8 63.1 67.2 70.2 70.6 weft yarn 57.2 66.5 73.8 67.3 77.9 82.8 84.4 Fastening elements 54.5 62.1 69.7 66.5 71.5 75.7 74.2 Dyed loop hook and loop Warp 52.2 60.2 66.2 62.9 69.7 74.0 71.1 weft yarn 58.0 67.5 75.0 73.2 79.2 84.1 85.1 Fastening elements 61.5 75.3 80.2 77.3 86.7 88.2 91.0 Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes

As can be seen from Table 1, compared with the case of water-based dyeing, the supercritical _CO dyed case has a lower degree of crystallinity in any of the warp yarn, weft yarn, and fastening element.

Tensile properties were carried out using a table-top precision universal testing machine (autograph) based on the tensile testing machine specified in JIS L3416:2000-7.4.1a)1, and the elongation modulus of elasticity test specified in JIS L1013:2010-8.9. Determination. Replace the jig for fastening measurement with the jig for test yarn measurement. Fix the test yarn (hook fastening element or loop fastening element) collected from the dyed hook and loop fabric hook and loop fasteners to the upper and lower chucks (chuck interval: 10cm), start Measure and obtain the breaking strength, breaking elongation, elastic modulus and breaking length of the test yarn. The measured values in Table 2 are the average of 10 measurements. Table 2 unit Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 measured value measured value measured value measured value measured value measured value measured value Fastening elements of dyed hook and loop fabric hook and loop Breaking strength cN/dtex 3.86 4.29 4.38 4.31 4.47 4.57 4.63 elongation at break % 45.8 39.9 34.1 33.9 27.3 20.8 18.3 modulus of elasticity cN/dtex 39.4 48.5 57.6 64.0 75.1 92.1 88.5 Break length mm 99.2 86.7 74.2 68.1 68.7 63.2 57.8 Fastening elements for dyed loop fabric hook and loop Breaking strength cN/dtex 1.58 2.01 2.04 2.03 2.07 2.09 2.06 elongation at break % 51.1 43.9 36.8 35.8 35.2 32.3 32.5 modulus of elasticity cN/dtex 7.6 8.5 9.4 10.3 10.0 10.8 10.6 Break length mm 124.7 97.1 93.5 91.1 90.2 86.7 86.2 Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes

As can be seen from Table 2, the breaking strength of the hook fastening elements and loop fastening elements collected from the dyed fabric Velcro of the present invention is lower than that of the water-based dyed case. Also, the elongation at break and the length at break are greater than those of water-based dyeing.

Dyeing property Use a micro-ultraviolet-visible-near-infrared spectrophotometer to observe the cross-section of each yarn of the dyed fabric hook and loop after supercritical CO ₂ dyeing, and measure the degree of dyeing.

For the sheath portion of the core-sheath type multifiber, the spectral transmittance was measured in a wavelength region of a wide range from the ultraviolet region to the near-infrared region by the ultraviolet-visible spectroscopy method in accordance with JIS K 0115:2020. As a measuring device for spectral transmittance, JASCO Corporation "MSV-5200 DGK" (measurement method: transmittance measurement, wavelength range 200 to 2700 nm) was used. At the time of measurement, focus was placed on the deepest part visually among the thermally welded portions of the weft, and the measurement was performed at a size of 10 μm. For 10 different weft yarns, the spectral transmittance is measured, and the average value is regarded as the value of the spectral transmittance. table 3 Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 hook fastening elements Dyeing from yarn outer diameter to 16±5μm Dyeing from yarn outer diameter to 17.0±8.0μm Dyeing from yarn outer diameter to 18.0±9.0μm (65.0±10.0% from the center is not dyed) Dyeing from yarn outer diameter to 18.0±9.0μm (65.0±10.0% from the center is not dyed) Dyeing from yarn outer diameter to 18.0±9.0μm Dyeing from yarn outer diameter to 18.0±9.0μm Dyeing from yarn outer diameter to 12.0±0.5μm (86.5±5.0% from the center is not dyed) Ring Fastening Elements dyed dyed dyed dyed dyed dyed dyed Weft yarn (thermal welding part) Penetration rate below 70% Penetration rate below 70% Penetration below 50% Penetration rate below 70% Penetration rate below 70% Penetration rate below 70% Penetration rate above 71% Weft yarn (core component) Disperse dyes are present inside Disperse dyes are present inside Disperse dyes are present inside Disperse dyes are present inside Disperse dyes are present inside Disperse dyes are present inside Disperse dyes are not present inside Warp dyed dyed dyed dyed dyed dyed dyed Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes

It can be seen from Table 3 that the hook fastening elements of Examples 1 and 2 are dyed not only on the outside but also on the inside (the part outside the range of 65.0±10.0% from the center). On the other hand, in Comparative Example 1, the dye was stained in some parts inside the hook fastener element. In addition, it can be seen that the sheath component (thermally welded part) is also dyed, and it is more uniformly dyed than in the case of water-based dyeing (Comparative Example 1). In addition, the dye of the core component penetrates (exists) in the entire cross-section. That is, the dye adheres to the entire cross-section. On the other hand, in the case of aqueous dyeing (Comparative Example 1), intrusion (existence) of the dye into the core component was not observed.

Fastening Strength of Dyed Fabric Hook and Loop a. Tensile shear strength (shear strength) Measured in accordance with the tensile shear strength specified in 7.4.1 of JIS L3416:2000. Cut the dyed hook-shaped fabric Velcro tape and the dyed loop-shaped fabric Velcro tape into 25 mm wide x 100 mm long respectively. Make the hook-shaped Velcro tape face down and the loop-shaped Velcro tape face up, and lift the edge of the respective Velcro tape by 50mm to leave the gripping part (non-fastening part) on the respective Velcro tape method loaded. Next, the sample was prepared by rolling back and forth twice with a 2 kg roller. Set one gripping part (within length 30mm) of the sample on the upper chuck of the desktop precision universal testing machine, and set the other gripping part (within length 30mm) on the lower chuck to measure the strength.

b. Peel strength (peel strength) Measured in accordance with the peel strength specified in 7.4.2 of JIS L3416:2000. Cut the dyed hook and loop fabric hook and loop into 25mm wide x 150mm long. Place the dyed hook fabric hook and loop facing upwards and the dyed loop fabric hook and loop facing down, and place both ends aligned. Next, the sample was prepared by rolling back and forth twice with a 2 kg roller. The part within 30 mm from the side edge of the sample was peeled off, and the peeled part was set on the chuck of a desktop precision universal testing machine, and the peel strength was measured.

c. Repeated Peeling Durability A peeling tester based on a durability tester specified in 7.5.1c of JIS L3416:2000 was used. Set the dyed hook-shaped fabric Velcro and dyed loop-shaped fabric Velcro in a peel tester, and repeat the predetermined 5,000 times of fastening and peeling. After the peeling is completed, the strength is measured according to the above-mentioned methods for measuring the tensile shear strength (shear strength) and the peel strength (peel strength). The measured values in Table 4 are the average of three measurements. Table 4 Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 measured value retention rate measured value retention rate measured value retention rate measured value retention rate measured value retention rate measured value retention rate measured value retention rate Tensile shear strength (shear strength) N/cm ² the first time 7.8 - 7.9 - 8.2 - 11.4 - 8.3 - 7.8 - 6.9 - After 5,000 peels 6.7 86 6.9 87 7.2 89 10.0 88 7.3 88 6.3 81 5.6 82 Peel strength (peel strength) N/cm the first time 0.98 - 1.01 - 1.04 - 1.27 - 1.06 - 0.97 - 0.88 - After 5,000 peels 0.79 81 0.81 80 0.85 81 1.03 81 0.86 81 0.72 74 0.63 72 Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes

Compared with the case of water-based dyeing, it can be seen that the case of supercritical CO ₂ dyeing is superior in tensile shear strength and peel strength for the first time and after repeating 5,000 times of fastening/peeling.

d. Fastening count was measured with respect to the sample before the peel strength (peel strength) measurement and the sample after repeated peel durability measurement. Using a magnifying glass, visually count the number of fastened loop fastening elements present in the 25 mm wide x 20 mm long portion of the sample (450 loop fastening elements exist) while peeling. Furthermore, the number of fastened filaments within the filaments (450×8=3,600 filaments) in the loop fastening element was found. The number of fastenings in Table 5 is the average of three measurements. table 5 Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 Buckle number Proportion Buckle number Proportion Buckle number Proportion Buckle number Proportion Buckle number Proportion Buckle number Proportion Buckle number Proportion Buckle count (in 450 components) the first time 179 40% 177 39% 173 38% 174 39% 169 38% 163 36% 181 40% After 5,000 peels 143 32% 141 31% 137 30% 138 31% 134 30% 110 twenty four% 115 26% Number of filaments snapped the first time 678 19% 664 18% 688 19% 699 19% 657 18% 672 19% 605 17% After 5,000 peels 530 15% 545 15% 529 15% 564 16% 539 15% 475 13% 406 11% Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes

The fastening count of the initial ring-shaped fastening element is more in the case of water-based dyeing. In the results of Table 4, the tensile shear strength and peel strength are better in the case of supercritical CO ₂ dyeing. From the results in Table 5, it can be seen that in the dyed fabric hook and loop fasteners dyed by supercritical CO ₂ , compared with the dyed fabric hook and loop fasteners dyed by water system, the filaments in the loop fastening elements are more fastened. , that is, 1 hook fastening element catches more filaments. The results in Tables 4 and 5 show that even though the number of fastened loop fastening elements is large, the tensile shear strength and peel strength decrease when the number of fastened filaments in the loop fastening element is small .

For the sublimation fastness at high temperature, a ventilation and circulation type thermostat is used. Set the thermostat at a predetermined temperature (160-200° C.), and 30 minutes after reaching the set temperature, put the sample into the thermostat and let it stand for 24 hours. After placing, the surface and back of the sample were taken as the reference before the respective heat treatment, and the spectrophotometer was used to measure the color, and the concentration of the surface of the dyed fabric hook and loop (Table 6) and the color difference between the surface and the back ΔE ( Table 7). The measured concentrations in Table 6 and the measured ΔE in Table 7 are the average of three measurements. Table 6 Curing temperature Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 Measured concentration (%) Measured concentration (%) Measured concentration (%) Measured concentration (%) Measured concentration (%) Measured concentration (%) Measured concentration (%) Dyed hook and loop hook and loop (surface) 160°C 90.2 92.2 96.2 97.1 97.0 97.8 89.0 170°C 85.1 87.9 91.7 93.5 92.5 93.2 85.9 180°C 82.9 84.6 88.3 91.2 89.0 89.8 80.8 190°C 77.7 80.2 83.7 87.3 84.4 85.1 73.8 200℃ 72.6 75.9 79.2 82.2 79.9 80.5 68.8 Dyed loop fabric hook and loop (surface) 160°C 87.0 88.8 92.7 93.0 93.5 94.2 90.1 170°C 83.6 85.3 89.0 90.3 89.7 90.5 87.1 180°C 75.3 78.7 82.1 84.1 82.8 83.5 72.2 190°C 73.4 75.7 79.0 81.1 79.7 80.3 71.8 200℃ 70.6 72.7 75.9 77.9 76.5 77.2 71.0 Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes Table 7 Curing temperature Comparative example 2 Example 3 Example 1 Example 2 Example 4 Comparative example 3 Comparative example 1 Determination of ΔE Determination of ΔE Determination of ΔE Determination of ΔE Determination of ΔE Determination of ΔE Determination of ΔE Dyed hook and loop hook and loop (back) 160°C 0.80 0.53 0.17 0.10 0.08 0.06 1.00 170°C 1.35 0.91 0.67 0.66 0.60 0.68 1.83 180°C 1.40 1.27 0.75 0.73 0.79 0.76 2.52 190°C 2.22 1.73 1.61 1.51 1.52 1.63 2.94 200℃ 2.40 2.01 1.83 1.73 1.80 1.86 3.36 Dyed loop hook and loop (back) 160°C 1.38 0.94 0.60 0.59 0.61 0.60 1.49 170°C 1.87 1.54 1.21 1.19 1.15 1.23 1.71 180°C 2.15 1.80 1.55 1.43 1.56 1.58 2.46 190°C 2.68 2.57 2.29 2.15 2.36 2.33 2.98 200℃ 3.02 2.89 2.67 2.33 2.64 2.71 3.63 Manufacturing conditions (temperature × time) 100℃×30 minutes 110℃×30 minutes 120℃×30 minutes 120℃×30 minutes 130℃×30 minutes 140℃×30 minutes 135℃×60 minutes

From Tables 6 and 7, it can be seen that the surface and back of the dyed fabric hook and loop fastener of the present invention have excellent sublimation fastness at high temperature.

none

none.

none.

Claims (9)

A dyed fabric hook and loop tape, which includes a fabric base fabric composed of warp yarns and weft yarns and a plurality of fastening elements standing up from one surface of the base fabric, The aforementioned fastening elements are loop fastening elements, hook fastening elements or both, The aforementioned hook-shaped fastening elements are formed of hook-shaped fastening element yarns woven into the aforementioned base fabric parallel to the warp yarns, The aforementioned loop fastening elements are formed of loop fastening element yarns woven into the aforementioned base fabric parallel to the warp yarns, The aforementioned warp yarns contain polyethylene terephthalate-based polyester, The aforementioned yarn for hook-shaped fastening elements comprises polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester, The aforementioned loop fastening element yarn comprises polyethylene terephthalate polyester or polybutylene terephthalate polyester, The weft yarn comprises a core-sheath heat-sealable fiber having a heat-sealable low-melting point polyester resin as a sheath component and a polyethylene terephthalate-based polyester as a core component, The root of the aforementioned fastening element is welded to the melted sheath component and fixed to the aforementioned base fabric, The sheath components and core components and fastening elements of the warp and weft yarns mentioned above are dyed with disperse dyes, and further satisfy the following conditions (1) to (3); (1) There is a disperse dye inside the core component of the aforementioned core-sheath type heat-fusible fiber, (2) The elongation at break of the aforementioned hook-shaped fastening elements is 27-41%, (3) The elongation at break of the aforementioned ring-shaped fastening element is 35-45%. The dyed fabric hook and loop according to claim 1, wherein the elongation at break of the aforementioned hook-shaped fastening elements is 27-38%. The dyed fabric hook and loop according to claim 1 or 2, wherein the breaking elongation of the aforementioned loop-shaped fastening elements is 35-40%. The dyed fabric hook and loop according to any one of Claims 1 to 3, wherein the aforementioned fastening element is a hook-shaped fastening element, and the degree of crystallization of the fastening element is 62-72%. The dyed fabric hook and loop according to any one of claims 1 to 4, wherein the aforementioned fastening element is a hook-shaped fastening element, and the breaking strength of the fastening element is 4.29-4.47 cN/dtex. The dyed fabric hook and loop according to any one of claims 1 to 3, wherein the aforementioned fastening element is a ring-shaped fastening element, and the degree of crystallization of the fastening element is 75-87%. The dyed fabric hook and loop according to any one of Claims 1 to 3 and 6, wherein the aforementioned fastening element is a ring-shaped fastening element, and the breaking strength of the fastening element is 2.01 to 2.07 cN/dtex. The dyed fabric hook and loop according to any one of claims 1 to 7, wherein the penetration rate of the sheath component (heat-welded portion) of the core-sheath composite fiber is 70% or less. A method for dyeing a fabric hook and loop, which uses disperse dyes to dye the fabric hook and loop in supercritical CO ₂ , wherein the fabric hook and loop includes a fabric base fabric composed of warp yarns and weft yarns and one of the base fabrics A plurality of fastening elements erected on the surface, the aforementioned fastening elements are loop-shaped fastening elements, hook-shaped fastening elements or both, the aforementioned hook-shaped fastening elements are woven into the aforementioned base fabric in parallel with the warp yarns The hook fastening elements are formed of yarns, the loop fastening elements are formed of loop fastening elements woven into the base fabric in parallel with warp yarns comprising polyethylene terephthalate is polyester, the aforementioned yarn for hook-shaped fastening elements includes polyethylene terephthalate-based polyester or polybutylene terephthalate-based polyester, and the aforementioned yarn for loop-shaped fastening elements includes polyethylene terephthalate Formate-based polyester or polybutylene terephthalate-based polyester, the weft yarn includes a heat-fusible low-melting point polyester resin as a sheath component and polyethylene terephthalate-based polyester as a core The core-sheath heat-sealable fiber of the component, the root of the aforementioned fastening element is welded to the melted sheath component and fixed to the aforementioned base fabric.