KR20120023011A - Engaging female member for a hook-and-loop fastener and a method for preparing the same - Google Patents

Abstract

Fabric, the fabric having warp yarns and weft yarns arranged in a space to form openings in the fabric, and loop yarns protruding from at least one surface; Flat substrates; And an adhesive layer provided on the yarn on one side of the fabric, bonding the fabric to the substrate, wherein the ratio of the (opening ratio of the adhesive layer) / (opening ratio of the fabric) is 0.1 or more and 1.0 or less. A member and a method of manufacturing the same are provided.

Description

ENGAGING FEMALE MEMBER FOR A HOOK-AND-LOOP FASTENER AND A METHOD FOR PREPARING THE SAME}

The present invention relates to an engaging female member for a hook-and-loop fastener and a method of manufacturing the same.

Bonded female members are made by placing an adhesive layer between a fabric and a substrate and then laminating them together. The fabric has warp yarns and weft yarns arranged at intervals as well as loop yarns. For example, the loop yarns protrude from the surface on the opposite side to the surface of the cloth provided with the adhesive. The joining female member functions as a joining system by loop yarns that entangle with the hooks of the joining male member.

EP-A-0848938A discloses a joining female member that can be applied to a refastenable mechanical fastening device. US Patent Publication No. 2006 / 0182927A discloses a composite element of Velcro fasteners. U.S. Patent 5,876,532 discloses a process for making a layered product. US Patent Publication 2005 / 0208260A discloses a laminate material for hook-loop fasteners, in particular diaper fasteners.

Recently, there is a need for a combined female member that can be used for a wide variety of products such as paper diapers, flooring and garments, provide excellent reliability, can also be used with low weight per unit area, and can be manufactured stably. come. Thus, the bonding force with the bonded male member can be advantageously maintained without allowing separation between the substrate and the cloth of the bonded female member, while suppressing the occurrence of blocking between the substrates when in the rolled state. I need to be able to.

Accordingly, the present invention advantageously maintains the bonding force with the bonded male member without allowing separation between the substrate and the cloth, and also allows the hook-loop to suppress the occurrence of blocking between the substrates when in the rolled state. A coupling female member for a fastener and a method of manufacturing the same are provided.

An object of the present invention is to provide a coupling female member for a hook-loop fastener and a method of manufacturing the same.

The present invention provides a fabric comprising: warp yarns and weft yarns arranged to be spaced to form openings in the fabric, and loop yarns protruding from at least one surface; Flat substrates; And an adhesive layer provided on the yarn on one side of the fabric, bonding the fabric to the substrate, wherein the ratio of (opening ratio of the adhesive layer) / (opening ratio of the fabric) is 0.1 or more and 1.0 or less. A female member is provided.

"Yarn on one surface of a cloth" includes at least one (preferably, warp yarn and weft yarn) of warp yarns, weft yarns or loop yarns provided on one side of the fabric. "An opening in the cloth" refers to a space formed in a portion surrounded by two opposing warp yarns and two opposing weft yarns, and the "opening ratio of the fabric" refers to the area of the major surface of the cloth (tilt yarns, weft yarns and loops). Sum of the area of the portion where the yarn is present and the total area of each opening in the fabric). "Opening of the adhesive layer" refers to a space formed in the portion surrounded by the adhesive on the two opposing warp yarns and the adhesive on the two opposing weft yarns, and the "opening ratio of the adhesive layer" is the area of the major surface of the adhesive layer ( Sum of the area of the portion where the adhesive is present and the total area of each opening of the adhesive layer).

In addition, the present invention has an opening corresponding to an opening formed in the cloth by applying an adhesive onto the yarn on one side of the fabric having spaced yarns and weft yarns arranged at intervals and loop yarns protruding from at least one surface. Providing an adhesive layer; And bonding a cloth to the substrate by laminating a flat substrate on the adhesive layer such that the ratio of (opening ratio of the adhesive layer) / (opening ratio of the cloth) is 0.1 or more and 1.0 or less. It provides a manufacturing method.

The present invention advantageously maintains the bonding force with the bonded male member and prevents the occurrence of blocking between the substrates when in the wound state while not allowing separation between the substrate and the cloth of the bonded female member. The present invention provides not only a coupling female member for a loop fastener but also a manufacturing method thereof.

According to the present invention, a coupling female member for a hook-loop fastener and a method of manufacturing the same can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view schematically showing an example of a coupling female member according to the present invention and an example of a hook-loop fastener using the coupling female member.
2 is a schematic plan view of a cloth before applying the adhesive;
3 is a schematic plan view of a cloth bonded to a substrate after the adhesive has been applied.
4 is a schematic diagram illustrating a method of applying an adhesive using a roll coating.
5 is a schematic diagram illustrating a method of applying an adhesive using a roll coating.
6 is a schematic diagram showing an example of a checkered pattern.
7 is a micrograph of the binding female member of (a) Comparative Example 2 and (b) Example 3. FIG.

Preferred embodiments of the present invention are described in detail below with reference to the drawings as necessary. Note that the same elements in the drawings are assigned the same reference numerals and redundant descriptions are omitted. In addition, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise stated. In addition, the dimension ratio of the drawings is not limited to the ratio shown in the drawings.

The engagement female member of this embodiment is demonstrated referring FIGS. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows schematically the example of the engagement female member which concerns on this embodiment, and the example of the hook-loop fastener which uses this engagement female member. 2 is a schematic plan view of a cloth before applying the adhesive. 3 is a schematic plan view of a cloth bonded to a substrate after applying the adhesive. Loop yarns are omitted from the figure in FIG. 2, and loop yarns and substrates are omitted in FIG. 3.

The engagement female member 1 (the engagement female member for a hook-loop fastener) of this embodiment contains the cloth 3, the adhesive bond layer 9, and the base material 21. As shown in FIG. The cloth 3 has a plurality of loop yarns 3c protruding from the surface (one of the surfaces) 5a as well as warp yarns 3a and weft yarns 3b arranged at intervals. The warp yarn 3a and the weft yarn 3b cross each other by, for example, weaving. Since the warp yarn 3a and the weft yarn 3b are positioned at intervals, a plurality of openings 7 are formed in the cloth 3. The adhesive layer 9 is provided on the yarns of the rear surface 5b opposite the surface 5a side and bonds the cloth 3 to the substrate 21. A plurality of openings 11 corresponding to the openings 7 are formed in the adhesive layer 9. The opening 11 is formed to overlap the opening 7 when the engaging female member 1 is viewed in the direction of thickness.

The engagement female member 1 is engaged with the engagement male member 31 because the loop yarn 3c is entangled with the hook 33 of the engagement male member 31. As the engagement male member 31, any general material having a hook that can be entangled with the loop yarn 3c can be used. The cloth 3, the adhesive layer 9 and the substrate 21 of the engagement female member 1 are described in more detail below.

The cloth 3 is described below. The warp yarn 3a, weft yarn 3b and loop yarn 3c can be made from a single filament or can be made from a bundle of a plurality of filaments. The cloth 3 may also include other yarns in addition to warp yarns 3a, weft yarns 3b, and loop yarns 3c. For example, yarns intersecting warp yarns 3a and weft yarns 3b may also be included. The loop yarn 3c may protrude at least from the front surface 5a or may protrude from the front surface 5a and the back surface 5b. The loop yarn 3c can be woven at least to the warp yarn 3a or the weft yarn 3b or to both the warp yarn 3a and the weft yarn 3b.

For example, the fabric 3 may be a three-layered reed weave with a loop yarn or two-layered reed weave, warp in-lay weave, Russell weave, or jaggard. other weaves). The material of the cloth 3 can be, for example, nylon, polyester, polypropylene, polyurethane, EVA (ethylene vinyl acetate), polyethylene, or polylactic acid. The material of the cloth 3 may be a single type or a combination of two or more types. Further, the warp yarn 3a, the weft yarn 3b and the loop yarn 3c of the cloth 3 may be made of the same or different materials.

The weight of the cloth 3 can be determined in view of the cost of maintaining the bonding force of the engagement male member 31 with the hook 33 and the manufacturing cost. In one embodiment, the weight of the cloth 3 may be 10 to 29 g / m 2, more preferably 15 to 24 g / m 2, and particularly preferably 17 to 22 g / m 2.

Next, the adhesive layer 9 is described. The adhesive layer 9 is provided on the warp yarn 3a and the weft yarn 3b of the rear surface 5b. In addition, if the loop yarns 3c protrude from the back surface 5b, the adhesive layer 9 is also provided on the loop yarns 3c of the back layer 5b. The adhesive layer 9 may not necessarily be completely covered with the warp yarn 3a and the weft yarn 3b when the bonding female member 1 is viewed from the thickness direction, and is not covered by the adhesive layer 9. There may be unoblique warp yarns 3a or weft yarns 3b.

The ratio of (opening ratio of the adhesive layer 9) / (opening ratio of the cloth 3) is 0.1 or more. If this ratio is less than 0.1, blocking will tend to occur easily, the ratio of 0.2 or more is preferable, and the ratio of 0.3 or more is especially preferable. On the other hand, the ratio of (opening ratio of the adhesive layer 9) / (opening ratio of the cloth 3) is 1.0 or less. If this ratio is 1.0, the width of the adhesive applied to the yarn is equal to the width of the yarn. In view of the balance between the prevention of separation between the substrate and the cloth (improving the strength between them) and the prevention of the occurrence of blocking between the substrates, a ratio of 0.9 or less is preferred, and a ratio of 0.8 or less is particularly preferred.

The "opening ratio of the adhesive layer 9" can be measured as shown below. The engaging female member 1 is positioned on the flat plate such that the front surface 5a (or rear surface 5b) is in contact with the flat plate without any bending or creases or the like. Light is irradiated onto the engaging female member 1 in the direction of the thickness of the engaging female member 1 to form a projection image on the flat plate. The appearance including ten or more openings 11 is observed using a microscope. In the above-described aspect, the aperture ratio of the adhesive layer 9 in the region of the projected image is measured from the region of the projection of the adhesive layer 9 formed in the flat plate, and the measured aperture ratio is the engagement female member for the hook-loop fastener. Is referred to as "an opening ratio of the adhesive layer 9". The "opening ratio of the cloth 3" can be measured using the same procedure as that of the opening ratio of the adhesive layer 9.

The adhesive layer 9 is preferably formed by roll coating the adhesive as described below onto the yarns of the rear surface 5b of the cloth 3. The adhesive used for the adhesive layer 9 may be any adhesive selected arbitrarily based on the application and the environment in which the bonding female member 1 is used. Preferably, a hot melt adhesive of reactive type may be used. Examples of reactive type hot melt adhesives include urethane adhesives, EVA adhesives, acrylic adhesives and vinyl acetate adhesives, of which reactive polyurethanes are preferred in view of advantageous adhesive strength, stability at high temperatures and flexibility. The amount of solvent discharged can be reduced by using hot melt adhesives of reactive type.

If desired, additives may be added to the adhesive. Examples of additives include blocking inhibitors, pigments, dyes, and antiaging agents. The additives can be used individually or in combination of two or more.

Next, the substrate 21 will be described. The substrate 21 is flat, for example film and nonwoven material. The substrate 21 can be pretreated to increase the adhesion to the adhesive layer 9. Examples of suitable pretreatments include corona discharge treatment on the adhesive layer 9 side and standard primer treatments (eg ethyleneimide, tributylene terephthalate).

Examples of the material of the film used for the substrate 21 include nylon, polyester, polypropylene, polyurethane, EVA, polyethylene, and polylactic acid, of which biaxially stretched polypropylene film is preferable in terms of dimensional stability. Do. The material of the film may be sole or may be a combination of two or more types.

Air permeability can be achieved when a nonwoven material is used as the substrate 21. Examples of nonwoven materials include natural fibers and commonly known methods such as SB (spunbond), MB (melt blow), SMS (spunbond melt blow spunbond), spunless, and the like. It includes synthetic fibers formed by. Examples of materials used for nonwoven materials include nylon, polyester, polypropylene, polyurethane, EVA, polyethylene, and polylactic acid. The material of the nonwoven material may be sole or may be a combination of two or more types.

Next, the manufacturing method of the engagement female member 1 of this embodiment is demonstrated. In the method of manufacturing the engagement female member 1 of the present embodiment, the inclined yarns 3a arranged at intervals by applying an adhesive onto the yarns of the rear surface 5b of the cloth 3 having the opening 7. Providing an adhesive layer 9 having an weft yarn 3b and an opening 11 corresponding to the opening 7 formed in the cloth 3 with the loop yarn 3c protruding from the front surface 5a. ; And laminating a flat substrate 21 onto the adhesive layer 9 to bond the cloth 3 to the substrate 21. In the step of bonding the fabric 3 and the substrate 21, the ratio of (opening ratio of the adhesive layer 9) / (opening ratio of the fabric 3) is 0.1 or more and 1.0 or less. As described above, the ratio of (opening ratio of the adhesive layer 9) / (opening ratio of the cloth 3) is preferably 0.2 or more, and more preferably 0.3 or more. Moreover, it is preferable that ratio of (the opening ratio of the adhesive layer 9) / (the opening ratio of the cloth 3) is 0.9 or less, and it is more preferable that it is 0.8 or less. According to the present embodiment, the adhesive is applied onto the yarns of the rear surface 5b to bond the cloth 3 and the substrate 21 in a state in which the adhesive does not completely cover the opening 7 and the opening 11.

The adhesive is preferably applied by roll coating. Roll coating is described using FIGS. 4 and 5. According to the roll coating, two heated rollers 15 are arranged on the cloth 3, and the adhesive 13 is melted between the two heated rollers 15. By rotating the heated roller 15, the molten adhesive 13 covers the entire outer circumference of the heated roller 15 and is attached thereto, and the cloth 3 is supplied. The adhesive 13 is transferred and applied onto the warp yarn 3a and the weft yarn 3b by contacting the warp yarn 3a and the weft yarn 3b on the rear surface 5b. The amount of adhesive 13 applied is controlled by the gap between the two heated rollers 15. The adhesive that has not been delivered and applied to the warp yarn 3a and the weft yarn 3b remains attached to the outer circumference of the heated roller 15, and the two heated rollers are rotated by the rotation of the heated rollers 15. Is returned between (15). Therefore, the opening 7 of the cloth 3 may be limited to be covered by an adhesive that is not transferred and applied to the warp yarn 3a and the weft yarn 3b. Thus, the above-described ratio of (opening ratio of the adhesive layer 9) / (opening ratio of the cloth 3) can be easily controlled to be within the above-described numerical value.

Application of the adhesive 13 by roll coating is preferably carried out using an adhesive having a viscosity of 1,500 to 12,000 mPa · s because the adhesive can be easily applied. The amount of adhesive 13 applied, the heating temperature, and the feed rate of the cloth 3 are suitably selected based on the type of the cloth 3 and the adhesive 13 as well as the roll coating equipment. During the application of the adhesive 13, the rotational speed of the heated roller 15 and the feed rate of the cloth 3 are preferably the same. In this case, a balance can be maintained between the supply and consumption of the adhesive 13 (application), so that a small globule of adhesive can be limited to the cloth 3.

If the substrate and the fabric are dry laminated after the adhesive has been applied in a predetermined pattern or over the entire surface of the film substrate, the adhesive will be present in the space of the substrate facing the opening of the fabric. Thus, the adhesive will pass through the opening of the cloth during lamination and the adhesive will adhere to the loop yarns on the front surface side. Thus, the loop yarns will fall towards the surface of the cloth, so that the loop yarns will not be easily entangled with the hooks of the mating male member.

In addition, when the adhesive is applied using a T-die nozzle, the adhesive is removed from the T-die lip in the region of the T-die lip in contact with the yarn along the MD direction (length direction) of the fabric. The yarn will be applied continuously. Thus, a balance can be achieved between the consumption (application amount) and the supply amount of the adhesive of the T-die lip. On the other hand, in the region of the T-die lip through which the opening of the cloth passes, the adhesive will not be consumed in the region of the opening, so that the supply of adhesive to the T-die lip will exceed the consumption. Thus, a small drop of adhesive will occur at the T-die lip. In addition, small droplets of adhesive will become larger with respect to the supply of adhesive and will adhere to the fabric when a certain size is reached. Small droplets of adhesive attached to the fabric will cause blocking when the laminated substrate is wound, thereby reducing the productivity of the joining female member. In addition, various properties such as the bonding force between the bonded female member and the bonded male member and the inter-layer strength between the cloth and the substrate will be unstable.

On the other hand, according to the engagement female member 1 obtained by roll coating as described above, the adhesive which is not delivered and applied to the warp yarn 3a and the weft yarn 3b is limited to cover the opening 7. Therefore, the adhesive is limited to attach to the loop yarn 3c on the side of the front surface 5a which is entangled with the hook 33 of the engagement male member 31, and the small droplet of adhesive is attached to the cloth 3 do. Therefore, although the amount of the adhesive after drying is smaller when compared to the bonded female member obtained by dry lamination or the like, the bonded female member 1 obtained by the roll coating has increased interlayer strength between the cloth 3 and the substrate 21. The coupling force between the coupling female member 1 and the coupling male member 31 will also be higher. In addition, since the adhesive can be stably applied, the interlayer strength between the cloth 3 and the substrate 21 and the mutual fixing strength between the bonding female member 1 and the bonding male member 31 can be stabilized. Also, by using a roll coating, a cloth having a low area weight can be used.

In addition, for the case of roll coating, the adhesive 13 is inclined yarns 3a and weft yarns 3b adjacent to the substrate 21 as well as inclined yarns 3a and weft yarns located far from the substrate 21. It is also applied to (3b). Thus, most of the warp yarn 3a and the weft yarn 3b can contribute to the bonding between the fabric 3 and the substrate 21, so that the interlayer strength between the fabric 3 and the substrate 21 is increased. Can be. Therefore, by using a roll coating, the reliability of the engagement female member 1 can be increased and the engagement female member 1 can be stably manufactured.

The joining female member of the present invention can be suitably used in joining systems for paper diapers, flooring, garments and the like.

Example

Although the present invention will be described in detail below based on examples, the present invention is not limited to these examples.

Examples 1-6

The bonded female member was prepared as shown below using a roll coating. The adhesive shown in Table 1 was applied onto a 22 g / m 2 polyamide tricoat as a cloth using a roll coater (manufactured by Matsushita Kogyo). Next, the cloth to which the adhesive agent was applied was laminated with the base material shown in Table 1. The amount of adhesive applied was approximately 2.5 g / m 2 and the temperature of the heated roller was approximately 120 ° C. Next, tens of meters of bonded female member was prepared by lamination, wound, and then stored for 2-3 days at ambient temperature and humidity to cure the adhesive.

Comparative Example 1 to Comparative Example 5

The bonded female member was prepared as shown below using a T-die. The adhesive shown in Table 1 was applied onto a 22 g / m 2 polyamide tricoat as a cloth using a T-die (manufactured by ITW Dynatech). Next, the cloth to which the adhesive agent was applied was laminated with the base material shown in Table 1. The amount of adhesive applied was approximately 2.5 g / m 2 and the temperature of the T-die was approximately 120 ° C. Next, tens of meters of bonded female member was prepared by lamination, wound, and then stored for 2-3 days at ambient temperature and humidity to cure the adhesive.

Comparative Examples 6 to 9

The joining female member was made by applying the adhesive as a string. The adhesive shown in Table 1 was applied onto a 22 g / m 2 polyamide tricoat as a cloth using a Megacoat nozzle die (manufactured by ITW Dynatech). Next, after drying in an oven, the cloth to which the adhesive was applied was laminated with the substrate shown in Table 1. The amount of adhesive applied was approximately 2.5 g / m 2 and the temperature during application was approximately 120 ° C. Next, tens of meters of bonded female member was prepared by lamination, wound, and then stored for 2-3 days at ambient temperature and humidity to cure the adhesive.

Comparative Example 10

Joined female members were made using dry lamination. 18 parts by weight of main component (product name: A969V, manufactured by Mitsui Chemical Polyurethane), 6 parts by weight of curing agent (product name: A5, manufactured by Mitsui Chemical Polyurethane), and 1.5 parts by weight of silica (Toku The adhesive was prepared by mixing Tokusil USA, manufactured by Tokuyama Inc.). This adhesive was applied to the entire surface of the substrate shown in Table 1. Next, after drying in the oven, 22 g / m 2 polyamide tricoat was used as the cloth and laminated using an adhesive. The amount of adhesive applied was approximately 2.5 g / m 2. The adhesive was then cured by storage at approximately 35 ° C. for approximately two days.

Comparative Example 11

The bonded female member was produced in a similar manner as in Comparative Example 10 except that a checkered pattern having a coating area of 2 mm × 2 mm was formed by dry lamination as shown in FIG. 6. In Fig. 6, reference numeral 17 denotes a zone where an adhesive is applied, and reference numeral 19 denotes a zone where an adhesive is not applied. The pattern application was performed by etching a 2 mm × 2 mm checkered pattern onto a gravure printing roll for dry lamination.

The resulting combined female member was evaluated as shown below. Table 1 shows the application method, substrate and adhesive used in each of the embodiments and comparative examples as well as the corresponding evaluation results. Details for each of the materials in Table 1 are shown below.

materials

BOPP: Double sided corona treated film (product name: FOR-2, thickness: 12 μm, manufactured by Futamura Chemical)

NW1: nonwoven material (polypropylene, SMS, 13 g / m 2, manufactured by Mitsui Chemicals)

glue

MA-3380S: humidity cured polyurethane adhesive (viscosity 1120 mPa? S at 120 ° C., manufactured by Mitsui Chemical Polyurethane)

MA-3002T: Humidity-cured polyurethane adhesive (viscosity 3120 mPa? S at 120 ° C, manufactured by Mitsui Chemical Polyurethane)

YR-346-1: Humidity Curing Polyurethane Adhesive (viscosity 1120 mPa? S at 120 ° C., manufactured by Hitachi Kasei Polymer)

MA-6311: humidity cured polyurethane adhesive (viscosity 1130 mPa? S at 130 ° C., manufactured by Mitsui Chemical Polyurethane)

DH-792: polyolefin thermoplastic adhesive (viscosity 7000 mPa? S at 130 ° C., manufactured by Nogawa Chemical)

Measurement of ratio of (opening ratio of adhesive layer) / (opening ratio of cloth)

First, the engaging female member prepared in Example 3 was placed on the flat plate without folding or wrinkles, with the surface where the loop yarn protrudes in contact with the flat plate. Next, light was irradiated onto the engagement female member in the thickness direction of the engagement female member in order to form a projection image on the flat plate. The presence of 10 openings in the adhesive layer was observed using a microscope (product name: VH-6200, manufactured by Keyence Corp.) (25 × zoom). In the above description, the aperture ratio of the adhesive layer was measured from the area of the projection of the adhesive layer formed on the plate. In addition, the aperture ratio of the cloth 3 was calculated using the same procedure by placing the cloth on a flat plate. The ratio of (opening ratio of the adhesive layer) / (opening ratio of the cloth) was determined from the ratio of the opening ratio of the adhesive layer to the opening ratio of the cloth. This measurement was repeated again by a different look and the ratio of (opening ratio of the adhesive layer) / (opening ratio of the cloth) was determined by the same procedure.

The ratio of (opening ratio of the adhesive layer) / (opening ratio of the cloth) was also calculated by the same procedure for the bonded female member prepared in Comparative Example 2. The measurement results of Example 3 and Comparative Example 2 are shown in Table 2.

How to measure the bonding force between the engaging female member and the engaging male member

Bonded female members made in accordance with various examples and comparative examples were measured. A bonded female member having substantially the same size as the steel sheet was fixed to a 50 mm x 100 mm steel sheet using a double-sided adhesive tape. A 25 mm wide and 20 mm long strip of bonded male member was made and one end of a 25 μm thick PET film 25 mm wide and 200 mm long was bonded to the rear surface of the bonded male member using adhesive tape. The entire surface of the engagement male member was placed on the engagement female member and these members were pressed together by applying a load by moving the 2 kg roller back and forth once to join the engagement male member and the engagement female member together. Next, in order to stabilize the bonding state, the other end of the PET film to which the bonding male member was not bonded was pulled in the horizontal direction using a 1 kg load. The hook of the mating male member used was CS-600 (manufactured by Sumitomo 3M, pin density: 1600 ppi, tip end shape: mushroom).

In addition, a Tensilon tensile tester (product name: AGS-100B, Shimadzu Corp.) with a distance of 25 mm and a tensile speed of 300 mm / min in a 90 ° direction. Produced), the peel strength of the bonded female member and the bonded male member was measured to determine the bonding force between the bonded female member and the bonded male member. Six samples of each of the binding female members made according to each of the Examples and Comparative Examples were made, and the average of the measured values was used as the value for the binding force.

How to measure the interlaminar strength between fabric and substrate

The bonded female member produced according to each of the Examples and Comparative Examples was measured. The fabric and the substrate bonded by the adhesive were cut into short strips 25 mm wide and 100 mm long, and tested by laminating an STA-373 adhesive tape (made by Sumitomo 3M) onto the back surface of the substrate as a reinforcing material. A sample was made. The adhesive force when peeling the cloth and the substrate in the 180 ° direction was measured using a Tensilon tensile tester (product name: AGS-100B, manufactured by Shimadzu Corporation) at a speed of 300 mm / min and a chuck distance of 25 mm. The interlaminar strength between the cloth and the substrate was determined. Six samples of each of the combined female members produced according to each of the embodiments and the comparative examples were made, and the average value of the measured values obtained from each of the samples was used as the value for the interlayer strength.

How to Evaluate Peel Between Layers

If delamination between layers occurred between the fabric and the substrate during the above-described bond force measurements, an evaluation of "yes" was given, and if no delamination occurred, an evaluation of "no" was made.

How to evaluate blocking

For the bonded female member of each of the Examples and Comparative Examples in the wound state, if the laminated substrates were sticked together when they were released, a blocking evaluation of "Yes" was made, and if the laminated substrates were not stuck together, the blocking of "No" Evaluation was made.

Evaluation of stability of adhesive application on cloth

The bonded female members produced according to various embodiments and comparative examples were evaluated by observing the stability of adhesive application on a cloth under an optical microscope. Evaluation was performed by observation using an optical microscope (25X zoom). (a) Micrographs of the coupling female member of Comparative Example 2 and (b) Example 3 are shown in FIG.

Overall rating

For the bonded female member, the interlayer strength between the cloth and the substrate is maintained to prevent delamination between the cloth and the substrate layers due to the bonding with the bonded male member. Generally, when the bonding force between the bonded female member and the bonded male member is 1.5 to 4.5 N / 25 mm, and the interlaminar strength between the cloth and the substrate is 3 N / 25 mm or more, peeling between the cloth and the substrate layers does not easily occur. Will not.

In view of the above findings and productivity, the overall evaluation of the combined female member produced by various embodiments and comparative examples can be made using the following conditions (1) and (2). Specifically, if both condition (1) and condition (2) are satisfied, an evaluation of "A" is given, and if either condition (1) or condition (2) is satisfied, an evaluation of "B" is given. If neither condition (1) nor condition (2) was satisfied, evaluation of "C" was made.

(1) Small droplets of adhesive do not adhere to the fabric, the loop yarns are not constrained by attachment to the adhesive, and no blocking occurs when in the wound state after lamination.

(2) The interlayer strength between the cloth and the base material is 3 N / 25 mm or more, and peeling between the cloth and the base material due to mutual fixation with the bonded male member does not occur.

How to evaluate air permeability

For the combined female member produced according to each of the Examples and Comparative Examples, by the Galley method using an air permeability tester (trade name: manufactured by DENSOMETER, Toyo Seiki) Air permeability was evaluated. An air permeability value of "Yes" means that the air permeability was 10 seconds / 100 Pa or less, and a sample exceeding this value was evaluated as having an air permeability of "no".

1: combined female member 3: cloth
9: adhesive layer 21: base material

Claims (5)

An engaging female member for a hook-and-loop fastener,
Fabric, the fabric having warp yarns and weft yarns arranged at intervals to form openings in the fabric, and loop yarns protruding from at least one surface of the fabric; Flat substrates; And an adhesive layer provided on the yarn on one side of the fabric, bonding the fabric to the substrate,
The engagement female member for hook-loop fasteners whose ratio of (opening ratio of adhesive layer) / (opening ratio of cloth) is 0.1 or more and 1.0 or less. The engagement female member of claim 1 wherein the substrate is a nonwoven material. The joining female member of claim 1, wherein the adhesive layer is provided by roll coating the adhesive onto a yarn on one surface of the fabric. A method of manufacturing a joining female member for a hook-loop fastener,
Providing an adhesive layer having an opening corresponding to the opening formed in the cloth by applying the adhesive onto the yarn on one side of the fabric having spaced yarns and weft yarns arranged at intervals and loop yarns protruding from at least one surface ; And
Laminating a flat substrate on the adhesive layer and bonding the fabric to the substrate such that the ratio of (opening ratio of the adhesive layer) / (opening ratio of the cloth) is 0.1 or more and 1.0 or less, and manufacturing a bonding female member for a hook-loop fastener. Way. The method of claim 4, wherein the adhesive is applied by roll coating.

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