JP2010253183A - Engaging female member for hook-and-loop fastener and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engaging female member for a hook-and-loop fastener which does not cause delamination between a base material and a fabric, preferably maintains engagement with a male engagement member and suppresses generation of blocking of the layered base material when rolled, and to provide a method for producing the same. <P>SOLUTION: The engaging female member 1 for a hook-and-loop fastener includes: a fabric 3 having a warp yarn 3a and a weft yarn 3b disposed at intervals, and a loop yarn 3c protruding from a surface 5a, and formed with openings 7; a flat substrate 21; and an adhesive layer 9 positioned on the yarn on the back side 5b of the fabric 3, and connecting the fabric 3 with the substrate 21, wherein the value of the opening ratio of the adhesive layer 9 to the opening ratio of the fabric 3 is 0.1 or more and 1.0 or less. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

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

  The engaging female member is produced by placing an adhesive layer between a fabric and a substrate and laminating. The fabric has warps and wefts arranged at intervals, and loop yarns. For example, the loop yarn protrudes from the surface of the fabric opposite to the surface on which the adhesive layer is disposed. The engaging female member functions as an engaging system when the loop yarn is entangled with the hook of the engaging male member.

  European Patent Application No. 0848938 discloses an engaging female member applicable to a re-engageable engaging device. US 2006/0182927 discloses a velcro fastener composite element. U.S. Pat. No. 5,876,532 discloses a method for manufacturing a laminated assembly. US 2005/0208260 discloses a binding material for hook and loop fasteners, in particular diaper fasteners.

European Patent Application No. 08488938 US Patent Application Publication No. 2006/0182927 US Pat. No. 5,876,532 US Patent Application Publication No. 2005/0208260

  By the way, in recent years, there has been a demand for an engaging female material that is excellent in the reliability of a wide variety of products such as disposable diapers, flooring flooring materials, clothing, etc., and can be used even with low-weight fabrics and can be stably manufactured. ing. Therefore, the delamination between the base material and the fabric in the engaging female material does not occur, the engaging force with the engaging male material can be kept good, and the occurrence of blocking between the base materials when in the roll state It is important to suppress this.

  Therefore, the present invention does not cause delamination between the base material and the fabric, and can keep the engaging force with the engaging male material good, and the occurrence of blocking between the base materials when in the roll state. An engagement female material for a hook-and-loop fastener that can be suppressed and a method for manufacturing the same are provided.

  The present invention relates to a fabric having openings, having spaced warp and weft yarns, and loop yarns protruding from at least one side, An engaging female member for a hook-and-loop fastener, comprising: a base material; and an adhesive layer that joins the fabric and the base material and is located on a yarn on one side of the fabric, wherein the aperture ratio of the adhesive layer ) / (Fabric opening ratio) has a value of 0.1 or more and 1.0 or less.

  The “yarn on one side of the fabric” includes at least one of warp, weft and loop yarns (preferably warp and weft) located on one side of the fabric. The “fabric opening” means a space formed in a portion surrounded by facing warps and facing wefts, and “fabric opening ratio” means the area of the main surface of the fabric (warp, weft and loop yarns). The total area of all fabric openings relative to the existing area and the total area of all fabric openings). “Opening of the adhesive layer” means a space formed in a portion surrounded by the adhesive located on the opposite warp and the adhesive located on the opposite weft, and the “opening ratio of the adhesive layer” The area of the opening part of all the adhesive layers with respect to the area of the main surface of an adhesive layer (the total area of the part in which an adhesive exists, and the opening part of all the adhesive layers) is said.

  In the present invention, an adhesive is applied onto the yarn on one side of the fabric having openings, the warp and the weft arranged at intervals, and the loop yarn protruding from at least one side, A step of forming an adhesive layer having an opening corresponding to the opening, a planar base material is laminated on the adhesive layer, and the fabric and the base material are joined, and (opening ratio of the adhesive layer) / ( And a step of setting the value of the opening ratio of the fabric to 0.1 or more and 1.0 or less.

  According to the present invention, delamination between the base material and the fabric does not occur, the engaging force with the engaging male material can be kept good, and blocking between the base materials when in a roll state is suppressed. An engaging female member for a hook-and-loop fastener and a method for manufacturing the same are provided.

It is sectional drawing which shows typically an example of the engaging female material of this invention, and a surface fastener using the same. It is a schematic plan view of the fabric before an adhesive is applied. It is a schematic top view of the fabric joined with the base material after apply | coating an adhesive agent. It is a schematic diagram which shows the method of apply | coating an adhesive agent by roll coating. It is a schematic diagram which shows the method of apply | coating an adhesive agent by roll coating. It is a schematic diagram which shows the example of a checkered pattern. It is an optical microscope photograph of the engaging female material of (a) Comparative example 2 and (b) Example 3.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

  The engaging female member according to the present embodiment will be described with reference to FIGS. FIG. 1 is a cross-sectional view schematically showing an example of an engaging female member according to the present embodiment and a hook-and-loop fastener using the same. FIG. 2 is a schematic plan view of the fabric before the adhesive is applied. FIG. 3 is a schematic plan view of a fabric bonded to a substrate after applying an adhesive. However, in FIG. 2, the illustration of the loop yarn is omitted, and in FIG. 3, the illustration of the loop yarn and the base material is omitted.

  An engaging female member (engaging female member for surface fastener) 1 according to the present embodiment includes a fabric 3, an adhesive layer 9, and a base material 21. The fabric 3 has warp yarns 3a and weft yarns 3b arranged at intervals, and a plurality of loop yarns 3c protruding from the surface (one surface) 5a. The warp 3a and the weft 3b cross each other, for example, by braiding. A plurality of openings (fabric openings) 7 are formed in the fabric 3 by arranging warps 3a and wefts 3b at intervals. The adhesive layer 9 is located on the yarn on the back surface 5b opposite to the front surface 5a, and joins the fabric 3 and the base material 21. A plurality of openings (openings of the adhesive layer) 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 thickness direction.

  The engaging female member 1 is engaged with the engaging male member 31 by the loop yarn 3 c entangled with the hook 33 of the engaging male member 31. As the engaging male member 31, a general-purpose member having a hook 33 capable of being intertwined with the loop yarn 3c can be used. Below, the cloth 3, the adhesive bond layer 9, and the base material 21 of the engaging female material 1 are further demonstrated.

  The fabric 3 will be described. Each of the warp 3a, the weft 3b, and the loop yarn 3c may be a single filament or a bundle of a plurality of filaments. The fabric 3 may include yarns other than the warp yarn 3a, the weft yarn 3b, and the loop yarn 3c. For example, the fabric 3 may include a yarn that intersects with the warp yarn 3a and the weft yarn 3b. The loop yarn 3c only needs to protrude from at least the front surface 5a, and may protrude from the front surface 5a and the back surface 5b. The loop yarn 3c only needs to be knitted into either the warp yarn 3a or the weft yarn 3b, and may be knitted into both the warp yarn 3a and the weft yarn 3b.

  As the fabric 3, for example, a three-ply knitted fabric having a loop yarn, a two-ply knitted fabric, a weft insertion knitted fabric, a raschel knitted fabric and other knitted fabrics, a jacquard woven fabric and other woven fabrics are used. Examples of the material of the fabric 3 include nylon, polyester, polypropylene, polyurethane, EVA (ethylene / vinyl acetate), polyethylene, and polylactic acid. The raw material of the fabric 3 can also be used individually by 1 type or in combination of 2 or more types. Further, in the fabric 3, the materials of the warp 3a, the weft 3b, and the loop yarn 3c may be the same or different.

The weight of the fabric 3 can be determined from the viewpoint of maintaining the engagement force of the engagement male member 31 with the hook 33 and the manufacturing cost. In some embodiments, it can be a 10~29g / ^{m 2,} more preferably from 15~24g / ^{m 2,} and particularly preferably 17~22g / ^{m 2.}

  Next, the adhesive layer 9 will be described. The adhesive layer 9 is formed on the warp 3a and the weft 3b on the back surface 5b. When the loop yarn 3c protrudes from the back surface 5b, the adhesive layer 9 is also formed on the loop yarn 3c on the back surface 5b side. The adhesive layer 9 may not completely cover the warp 3a and the weft 3b when the engaging female member 1 is viewed in the thickness direction, and the warp 3a and the weft 3b not covered by the adhesive layer 9 May be present.

  (Opening ratio of adhesive layer 9) / (opening ratio of fabric 3) is 0.1 or more. When this value is less than 0.1, blocking between the substrates tends to occur. (Opening ratio of adhesive layer 9) / (opening ratio of fabric 3) is preferably 0.2 or more, and more preferably 0.3 or more. On the other hand, (opening ratio of adhesive layer 9) / (opening ratio of fabric 3) is 1.0 or less, and (opening ratio of adhesive layer 9) / (opening ratio of fabric 3) is 1.0. The adhesive is present along the yarn width. From the viewpoint of the balance between the two characteristics of “preventing delamination between substrate and fabric (improving interlayer strength)” and “suppressing blocking between substrates”, (opening ratio of adhesive layer 9) / (of fabric 3) (Aperture ratio) is preferably 0.9 or less, and more preferably 0.8 or less.

  The “opening ratio of the adhesive layer 9” can be measured as follows. The engaging female member 1 is placed on the flat plate so that the front surface 5a (or the back surface 5b) is in contact with the flat plate without bending or wrinkling. Light is irradiated to the engaging female member 1 in the thickness direction of the engaging female member 1 to form a projected image on the flat plate. A field of view including at least 10 apertures 11 is observed using a microscope. From the area of the projected image of the adhesive layer 9 formed on the flat plate in the field of view, the aperture ratio of the adhesive layer 9 in the projected image area is measured, and this measured value is used in the engaging female agent for the surface fastener. It is assumed that “the opening ratio of the adhesive layer 9”. The “opening ratio of the fabric 3” in the engaging female agent for surface fastener can also be measured by the same procedure as the opening ratio of the adhesive layer 9.

  The adhesive layer 9 is preferably formed by roll-coating an adhesive, which will be described later, on the yarn of the back surface 5b of the fabric 3. The adhesive used for the adhesive layer 9 is an adhesive that is arbitrarily selected according to the application and use environment of the engaging female member 1, and is preferably a reactive hot-melt adhesive. Examples of the reactive hot melt adhesive include urethane, EVA, acrylic, and vinyl acetate. Among them, reactive polyurethane is preferable from the viewpoint of good adhesive strength, stability at high temperature, and flexibility. preferable. In addition, the discharge amount of a solvent can be reduced by using a reactive hot melt adhesive.

  You may add an additive to an adhesive agent as needed. Examples of the additive include an antiblocking agent, a pigment, a dye, and an antiaging agent. An additive can also be used individually by 1 type or in combination of 2 or more types.

  Next, the base material 21 will be described. The base material 21 is planar, for example, a film and a nonwoven fabric are mentioned. The base material 21 can be subjected to a pretreatment for improving the adhesion with the adhesive layer 9. Appropriate pretreatments include, for example, performing a corona discharge treatment on the adhesive layer 9 side, and applying a general primer treatment (for example, ethyleneimide, TBT (tributylene terephthalate)).

  Examples of the film material used for the substrate 21 include nylon, polyester, polypropylene, polyurethane, EVA, polyethylene, and polylactic acid. Among them, a biaxially stretched polypropylene film is preferable from the viewpoint of shape stability. The film material can be used alone or in combination of two or more.

  When a non-woven fabric is used for the substrate 21, air permeability can be imparted. Examples of the nonwoven fabric include synthetic fibers and natural fibers formed by a well-known manufacturing method such as SB (spunbond), MB (melt blow), SMS (spunbond / meltblown / spunbond), and spunlace. Examples of the nonwoven material include nylon, polyester, polypropylene, polyurethane, EVA, polyethylene, and polylactic acid. The raw material of a nonwoven fabric can also be used individually by 1 type or in combination of 2 or more types.

  Next, the manufacturing method of the engaging female material 1 which concerns on this embodiment is demonstrated. The method of manufacturing the engaging female member 1 according to the present embodiment includes a warp 3a and a weft 3b arranged at intervals, and a loop 3 3c protruding from the surface 5a. A step of forming an adhesive layer 9 having an opening 11 corresponding to the opening 7 by applying an adhesive on the yarn of the back surface 5b, and laminating a planar substrate 21 on the adhesive layer 9, 3 and the base material 21 are joined. In the step of bonding the fabric 3 and the substrate 21, the value of (opening ratio of the adhesive layer 9) / (opening ratio of the fabric 3) is set to 0.1 or more and 1.0 or less. As described above, (opening ratio of adhesive layer 9) / (opening ratio of fabric 3) is preferably 0.2 or more, and more preferably 0.3 or more. On the other hand, (opening ratio of adhesive layer 9) / (opening ratio of fabric 3) is preferably 0.9 or less, and more preferably 0.8 or less. In the present embodiment, the application of the adhesive onto the yarn on the back surface 5 b and the joining of the fabric 3 and the base material 21 are performed without the adhesive completely covering the openings 7 and 11.

  The adhesive is preferably applied by roll coating. Roll coating will be described with reference to FIGS. In roll coating, two heating rolls 15 are disposed on the fabric 3 and the adhesive 13 is melted between the two heating rolls 15. As the heating roll 15 rotates, the melted adhesive 13 covers and adheres to the entire outer periphery of the heating roll 15, and the fabric 3 is conveyed. The adhesive 13 is transferred and applied onto the warp 3a and the weft 3b by contacting the warp 3a and the weft 3b on the back surface 5b. The application amount of the adhesive 13 is controlled by the interval between the two heating rolls 15. The adhesive that is not transferred and applied to the warp 3 a and the weft 3 b is returned to the two heating rolls 15 by the rotation of the heating roll 15 while adhering to the outer periphery of the heating roll 15. Thereby, it can suppress that the adhesive agent which is not transfer-applied to the warp 3a and the weft 3b covers the opening 7 of the fabric 3. FIG. Therefore, the value of (opening ratio of adhesive layer 9) / (opening ratio of fabric 3) can be easily controlled to the above numerical value.

  The application of the adhesive 13 by roll coating is preferably performed using an adhesive having a viscosity of 1500 to 12000 mPa · s because the adhesive can be easily applied. The application amount of the adhesive 13, the heating temperature, and the conveyance speed of the fabric 3 are appropriately selected depending on the type of the adhesive 13 and the fabric 3 and the equipment of the roll coater. It is preferable to apply the adhesive 13 so that the rotation speed of the heating roll 15 and the conveyance speed of the fabric 3 are equal. In this case, since supply and consumption (application) of the adhesive 13 can be balanced, it is possible to prevent the adhesive lump from adhering to the fabric 3.

  By the way, when the base material and the fabric are dry-laminated after the adhesive is applied to the entire surface of the film-like base material or the pattern is applied, the adhesive is present in the portion of the base material facing the opening of the fabric. As a result, the adhesive passes through the opening of the fabric during lamination, and the adhesive adheres to the loop yarn on the surface side. Therefore, the loop yarn falls toward the surface of the fabric, and the loop yarn is difficult to be entangled with the hook of the engaging male material.

  Further, when the adhesive is applied using the T die nozzle, the adhesive is continuously applied from the T die lip to the yarn at the portion of the T die lip that contacts the yarn along the MD direction (longitudinal direction) of the fabric. It will be. Therefore, the supply amount and consumption amount (application amount) of the adhesive for the T die lip are balanced. On the other hand, in the portion of the T die lip that passes over the opening of the fabric, the adhesive is not consumed in the opening, and therefore the amount of adhesive supplied to the T die lip exceeds the consumption. Therefore, an adhesive lump is generated on the T die lip. As the adhesive is supplied, the lump of the adhesive grows, and when it reaches a certain size, it adheres to the fabric. The lump of adhesive adhering to the fabric becomes a blocking factor when the laminated base material is wound, and the productivity of the engaging female member is lowered. Furthermore, various characteristics such as the engaging force between the engaging female member and the engaging male member and the interlaminar strength between the fabric and the substrate become unstable.

  On the other hand, in the engaging female member 1 obtained by roll coating, the adhesive that is not transferred and applied to the warp 3a and the weft 3b is prevented from covering the opening 7 as described above. Thereby, it is suppressed that an adhesive adheres to the loop yarn 3c on the surface 5a side intertwined with the hook 33 of the engaging male member 31, and an adhesive lump adheres to the fabric 3. Therefore, although the engagement female material 1 obtained by roll coating has a smaller amount of adhesive after drying than the engagement female material obtained by dry lamination or the like, the fabric 3 and the base material 21 And the engaging force between the engaging female member 1 and the engaging male member 31 is also high. Further, since the adhesive can be stably applied, the interlayer strength between the fabric 3 and the base material 21 and the engaging force between the engaging female member 1 and the engaging male member 31 can be stabilized. Moreover, it becomes possible to utilize a fabric with a low basis weight by using roll coating.

  Further, in the case of roll coating, the adhesive 13 is applied not only to the warp 3a and the weft 3b close to the base material 21, but also to the warp 3a and the weft 3b located away from the base material 21. Therefore, since many warps 3a and wefts 3b can contribute to the joining of the fabric 3 and the base material 21, the interlayer strength between the fabric 3 and the base material 21 can be increased. Thus, by using roll coating, the reliability of the engaging female member 1 can be improved and the engaging female member 1 can be stably manufactured.

  Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited thereto.

(Examples 1-6)
Using roll coating, an engaging female member was produced as follows. Using a roll coater (manufactured by Matsushita Kogyo Co., Ltd.), the adhesive shown in Table 1 was applied to 22 g / m ² of polyamide tricot as a fabric. And the fabric which apply | coated the adhesive agent and the base material shown in Table 1 were laminated. The application amount of the adhesive was about 2.5 g / m ² and the temperature of the heating roll was about 120 ° C. Thereafter, an engaging female material having a thickness of several tens of meters was produced by laminating, and was rolled and stored at room temperature and normal humidity for 2 to 3 days to cure the adhesive.

(Comparative Examples 1-5)
Using the T-die, an engaging female member was produced as follows. The adhesive shown in Table 1 was applied to polyamide tricot 22 g / m ² as a fabric using a T die (manufactured by ITW Dynatech). And the fabric which apply | coated the adhesive agent and the base material shown in Table 1 were laminated. The amount of adhesive applied was about 2.5 g / m ² and the temperature of the T die was about 120 ° C. Thereafter, an engaging female material having a thickness of several tens of meters was produced by laminating, and was rolled and stored at room temperature and normal humidity for 2 to 3 days to cure the adhesive.

(Comparative Examples 6-9)
An engaging female member was produced by applying an adhesive in a string shape. The adhesive shown in Table 1 was applied to a polyamide tricot 22 g / m ² as a fabric using an omega coat nozzle die (ITW Dynatech). And after drying in oven, the fabric which apply | coated the adhesive agent and the base material shown in Table 1 were laminated. The application amount of the adhesive was about 2.5 g / m ^2, and the temperature in application was about 120 ° C. Thereafter, an engaging female material having a thickness of several tens of meters was produced by laminating, and was rolled and stored at room temperature and normal humidity for 2 to 3 days to cure the adhesive.

(Comparative Example 10)
An engaging female member was produced using a dry laminate. 18 parts by mass of main agent (Mitsui Chemicals Polyurethanes, trade name: A969V), 6 parts by weight of curing agent (Mitsui Chemicals Polyurethanes, trade name: A5), and 1.5 parts by mass of silica (Tokushia USA: Tokuyama) An adhesive was prepared by mixing the parts. This adhesive was applied to the entire surface of the substrate shown in Table 1. And after drying in oven, the adhesive agent which apply | coated the adhesive agent and the polyamide tricot 22g / m < ² > as a fabric were laminated | stacked. The application amount of the adhesive was about 2.5 g / m ² . Then, it stored at about 35 degreeC for about 2 days, and adhesive agent hardening was performed.

(Comparative Example 11)
An engaging female member was produced in the same manner as in Comparative Example 10, except that the checkered pattern application with a coating area of 2 mm × 2 mm shown in FIG. In FIG. 6, the code | symbol 17 shows the area | region where the adhesive agent is apply | coated, and the code | symbol 19 shows the area | region where the adhesive agent is not apply | coated. For pattern coating, a dry laminate gravure obtained by etching a checkered pattern of 2 mm × 2 mm was used.

The following evaluation was performed about the produced engaging female material. Table 1 shows the coating method, base material, adhesive, and evaluation results used in each example and comparative example. The details of each material in Table 1 are as follows.
(Base material)
BOPP: Double-sided corona-treated film (Futamura Chemical Co., Ltd., trade name: FOR-2, thickness: 12 μm)
NW1: Non-woven fabric (Mitsui Chemicals, 13 g / m ² , polypropylene, SMS)
(adhesive)
MA-3380S: Moisture curable polyurethane adhesive (manufactured by Mitsui Chemicals Polyurethanes, viscosity 1800 mPa · s at 120 ° C.)
MA-3002T: Moisture curable polyurethane adhesive (manufactured by Mitsui Chemicals Polyurethanes, viscosity 3800 mPa · s at 120 ° C.)
YR-346-1: Moisture curable polyurethane adhesive (manufactured by Hitachi Chemical Polymer Co., Ltd., viscosity 12000 mPa · s at 120 ° C.)
MA-6611: Moisture curable polyurethane adhesive (Mitsui Chemical Polyurethanes, 12000 mPa · s at 130 ° C.)
DH-792: polyolefin thermoplastic adhesive (manufactured by Nogawa Chemical, 7000 mPa · s at 130 ° C.)

(Measurement of (opening ratio of adhesive layer) / (opening ratio of fabric))
First, the engaging female member produced in Example 3 was placed on a flat plate without bending or wrinkles so that the surface from which the loop yarn protruded was in contact with the flat plate. Next, the engagement female member was irradiated with light in the thickness direction of the engagement female member to form a projected image on the flat plate. Using a microscope (manufactured by Keyence Corporation, trade name: VH-6200), a visual field where openings of 10 adhesive layers were present was observed (magnification: 25 times). From the area of the projected image of the adhesive layer formed on the flat plate in the field of view, the aperture ratio of the adhesive layer was measured. Moreover, the opening ratio of the fabric 3 was calculated in the same procedure using the fabric placed on a flat plate. The value of (opening ratio of the adhesive layer) / (opening ratio of the fabric) was calculated from the calculated opening ratio of the adhesive layer and the opening ratio of the fabric. This measurement was repeated once more while observing another visual field, and the value of (opening ratio of adhesive layer) / (opening ratio of fabric) was calculated again in the same manner.

  By the same procedure as described above, the value of (opening ratio of adhesive layer) / (opening ratio of fabric) was also calculated for the engaging female member produced in Comparative Example 2. Table 2 shows the calculation results of the value of (opening ratio of adhesive layer) / (opening ratio of fabric) for Example 3 and Comparative Example 2.

(Measuring method of engaging force between engaging female member and engaging male member)
Measurement was performed on the engaging female member produced in each example and comparative example. An engaging female member of approximately the same size as the steel plate was fixed to a 50 mm × 100 mm steel plate using a double-sided adhesive tape. An engagement male material having a width of 25 mm × 20 mm was prepared, and one end of a PET film having a width of 25 mm × 200 mm and a thickness of 25 μm was bonded to the back surface of the engagement male material using an adhesive tape. The entire surface of the engaging male member was placed on the engaging female member, and the reciprocating load was applied by a 2 kg roller, and the male male member was engaged with the engaging female member. Next, the other end of the PET film not joined to the engaging male member was pulled horizontally with a weight of 1 kg to stabilize the engaging state. Note that CS-600 (manufactured by Sumitomo 3M, pin density: 1600 ppi, tip shape: bowl-shaped) was used as the hook of the engaging male member.

  Then, using a Tensilon tensile tester (manufactured by Shimadzu Corporation, trade name: AGS-100B), the separation force between the engaging female member and the engaging male member is 25 mm between chucks and a pulling speed of 300 mm / min in the 90-degree direction. The engaging force between the engaging female member and the engaging male member was determined. Note that six engaging female members prepared according to the respective examples and comparative examples were prepared, and the average value of the respective measured values was used as the value of the engaging force.

(Measurement method of interlayer strength between fabric and substrate)
Measurement was performed on the engaging female member produced in each example and comparative example. A sample obtained by cutting a fabric and a substrate bonded with an adhesive into a strip of 25 mm width × 100 mm length and laminating a STA-373 adhesive tape (manufactured by Sumitomo 3M) as a reinforcing material on the back surface of the substrate was used as a sample. . Use a Tensilon tensile tester (manufactured by Shimadzu Corporation, trade name: AGS-100B) for the adhesive force when the fabric and the substrate are pulled and peeled in the direction of 180 degrees at a distance between chucks of 25 mm and a speed of 300 mm / min. The interlayer strength between the fabric and the substrate was determined. Note that six engaging female members prepared in each example and comparative example were prepared, and the average value of the measured values obtained from each sample was used as the value of the interlayer strength.

(Evaluation method of delamination)
When the above-described engagement force measurement, delamination between the fabric and the substrate occurred as “Yes”, and when it did not occur as “None”.

(Blocking evaluation method)
When the laminated base materials are bonded to each other in the rolled state of each of the working examples and comparative examples when the roll shape is unwound, blocking is “present” and there is no adhesion between the laminated base materials. In this case, the blocking was “none”.

(Stability evaluation of adhesive application to fabric)
About the engaging female material produced by each Example and the comparative example, stability of application | coating of the adhesive agent to a fabric was evaluated by optical microscope observation. Evaluation was performed by observing using an optical microscope (magnification: 25 times). In FIG. 7, the optical microscope photograph of the engaging female material of (a) Comparative example 2 and (b) Example 3 is shown.

(Comprehensive evaluation)
In the engaging female member, it is necessary to maintain the interlayer strength between the fabric and the substrate so that the interlayer separation between the fabric and the substrate does not occur due to the engagement with the engaging male member. Generally, if the engaging force between the engaging female member and the engaging male member is 1.5 to 4.5 N / 25 mm and the interlayer strength between the fabric and the substrate is 3 N / 25 mm or more, Delamination with the substrate is unlikely to occur.

In consideration of the above knowledge and productivity, comprehensive evaluation of the engaging female material produced by each example and comparative example was performed according to the following requirements (1) and (2). Specifically, “A” is satisfied when the conditions (1) and (2) are satisfied, “B” is satisfied when (1) or (2) is satisfied, and “1” is not satisfied when (1) and (2) are not satisfied. C ".
(1) The adhesive lump does not adhere to the fabric, the loop yarn does not collapse due to adhesion of the adhesive, and blocking does not occur when the roll state after lamination is obtained.
(2) The interlayer strength between the fabric and the substrate is 3 N / 25 mm or more, and the interlayer separation between the fabric and the substrate does not occur due to the engagement with the engaging male material.

(Breathability evaluation method)
About the engaging female material produced by each Example and the comparative example, air permeability was evaluated by the Gurley method using the air permeability evaluation apparatus (The product name: DENSOMETER, the product made by TOYOSEIKI). The air permeability “present” is 10 seconds / 100 CC or less, and those exceeding this value were regarded as “no air permeability”.

  The engaging female material of this invention is used suitably for engaging systems, such as a paper diaper, a flooring floor material, and clothing.

  DESCRIPTION OF SYMBOLS 1 ... Engagement female material (engagement female material for surface fastener), 3 ... Fabric, 3a ... Warp, 3b ... Weft, 3c ... Loop yarn, 5a ... Fabric surface, 5b ... Fabric back surface, 7 ... Fabric opening , 9 ... Adhesive layer, 11 ... Opening of adhesive layer, 21 ... Base material.

Claims (5)

Located on the yarn on one side of the fabric, a fabric having an opening, having warps and wefts arranged at intervals, and a loop yarn protruding from at least one side, a planar substrate, An engagement female material for a hook-and-loop fastener comprising the fabric and an adhesive layer that joins the base material,
An engaging female member for hook-and-loop fasteners having a value of (opening ratio of the adhesive layer) / (opening ratio of the fabric) of 0.1 or more and 1.0 or less.   The engaging female member for a hook-and-loop fastener according to claim 1, wherein the base material is a non-woven fabric.   The engagement female material for a hook-and-loop fastener according to claim 1, wherein the adhesive layer is formed by roll-coating an adhesive on the yarn on one surface of the fabric. An opening corresponding to the opening is formed by applying an adhesive on the yarn on one side of a fabric having an opening formed having warps and wefts arranged at intervals and a loop yarn protruding from at least one side. Forming an adhesive layer having:
A flat base material is laminated on the adhesive layer, the fabric and the base material are joined, and the value of (opening ratio of the adhesive layer) / (opening ratio of the fabric) is 0.1. The manufacturing method of the engaging female material for hook-and-loop fasteners provided with the step made into 1.0 or less above.   The method for producing an engaging female material for a hook-and-loop fastener according to claim 4, wherein the adhesive is applied by roll coating.