Hook-and-loop fastener and method for manufacturing the same

Abstract

The hook-and-loop fastener (1) is integrated with the surface of a cushion body (60), and comprises a resin base material (20) having a first surface (21) and a second surface (22) which are in a front-back relationship, a plurality of engaging elements (31) provided in an element region (R) of the first surface (21) of the base material (20), and a flexible porous member (40) provided on the second surface (22) of the base material (20), wherein the base material (20) comprises a main body portion (23) including the element region (R), and flange portions (24A, 24B) extending from the main body portion (23) and having a shape bent toward the second surface (22) relative to the main body portion (23), and the porous member (40) includes compressed portions (41A, 41B) compressed between the main body portion (23) and the flange portions (24A, 24B).

Description

[Technical Field]

[0001] The present invention relates to a hook-and-loop fastener and a method for manufacturing the hook-and-loop fastener. [Background technology]

[0002] Generally, vehicle seats and chairs are constructed by attaching a covering material to the surface of a cushion body, and one known method of attaching this covering material is to use a hook-and-loop fastener. In this method, the hook-and-loop fastener is set in a mold, and then the raw material for the cushion body is injected into the mold and foamed and solidified, thereby integrating the hook-and-loop fastener with the surface of the cushion. The covering material is then attached by engaging the hook-and-loop fastener integrated with the cushion body.

[0003] Patent Document 1 discloses a hook-and-loop fastener (fastening tape) used in the above-mentioned attachment method. This hook-and-loop fastener comprises a strip-shaped base material and a plurality of engaging elements protruding from the base material. The base material also includes a flange portion bent on the opposite side of a main body portion on which the engaging elements are provided. This flange portion is positioned in a state where it is deeply inserted into the cushion body, thereby improving the adhesion of the hook-and-loop fastener to the cushion body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-99516 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the conventional technology disclosed in Patent Document 1 has a problem in that when a load is applied to the hook-and-loop fastener, such as during distribution of the hook-and-loop fastener before being integrated into a cushion body, the flange portion is likely to bend back due to the load. For example, when multiple hook-and-loop fasteners are packed in a stacked state, the flange portion of the hook-and-loop fastener arranged at the bottom may bend back due to the load applied from the hook-and-loop fastener arranged above.

[0006] An object of the present invention is to provide a hook-and-loop fastener and a method for manufacturing the hook-and-loop fastener that can improve adhesion to a cushion body while maintaining the bent shape of the flange portion. [Means for solving the problem]

[0007] One form of the present invention is a hook-and-loop fastener integrated onto the surface of a cushion body, comprising: a resin substrate having a first surface and a second surface that are opposite surfaces; a plurality of engaging elements provided in an element region on the first surface of the substrate; and a flexible porous member provided on the second surface of the substrate, wherein the substrate comprises a main body portion including the element region and a flange portion extending from the main body portion and having a shape bent toward the second surface relative to the main body portion, and the porous member includes a compressed portion compressed between the main body portion and the flange portion.

[0008] In this configuration, the compressed portion of the porous member can support the load applied to the hook-and-loop fastener, so that a load that would widen the bent shape of the flange portion is less likely to be applied to the flange portion, thereby allowing the bent shape of the flange portion to be maintained. Furthermore, because the raw materials of the cushioning material can permeate the porous member, even if the porous member is present between the flange portion and the main body, the flange portion is positioned in a state where it is inserted deeply into the cushion body. This allows the flange portion's original purpose, which is to ensure the adhesion of the hook-and-loop fastener, to be achieved without impairing it. Furthermore, the penetration of the raw materials of the cushioning material into the porous member increases the contact area between the hook-and-loop fastener and the cushioning material, improving the adhesion of the hook-and-loop fastener. Therefore, according to one aspect of the present invention, a hook-and-loop fastener is provided that can improve adhesion to the cushion body while maintaining the bent shape of the flange portion.

[0009] In one aspect of the present invention, it is preferable that the porous member is provided on the second surface of the base material so as to cover the main body portion and the flange portion. According to this configuration, the porous member is bent between the main body portion and the flange portion, and the compressed portion can be suitably formed.

[0010] In one embodiment of the present invention, when the direction from the first surface toward the second surface in the main body portion is defined as a predetermined direction, it is preferable that the porous member further includes a protrusion that protrudes in the predetermined direction beyond the flange portion. With this configuration, when the cushion body is formed, the protruding portion can be positioned deep inside the cushion body, and the adhesion of the hook-and-loop fastener can be further improved.

[0011] In one aspect of the present invention, it is preferable that the porous member further includes a non-compressed portion disposed on the main body portion, and the protruding portion forms a recess between the protruding portion and the non-compressed portion. With this configuration, when the cushion body is formed, the raw material for the cushion body flows into the recess and solidifies, allowing the porous member to embrace part of the cushion body, thereby further improving the adhesion of the hook-and-loop fastener.

[0012] In one aspect of the present invention, the porous member is preferably formed of a foam. In such a configuration, the porous member can be easily compressed, and the compressed portion of the porous member can be easily formed by bending the substrate.

[0013] In one embodiment of the present invention, the compressed portion may be hardened by welding or adhesive. With this configuration, the elastic force of the compression portion can be suppressed, and the bent shape of the flange portion can be more suitably maintained.

[0014] In one embodiment of the present invention, the substrate has, as the flange portion, a first flange portion extending from one side of the main body portion in the width direction and a second flange portion extending from the other side of the main body portion in the width direction, and the porous member may include the compression portion between the main body portion and the first flange portion and between the main body portion and the second flange portion. With this configuration, the compressed portions are formed on both widthwise sides of the main body, so that each compressed portion can share and support the load applied to the hook-and-loop fastener, thereby maintaining the bent shapes of the first flange portion and the second flange portion in an optimal manner.

[0015] One aspect of the present invention is a manufacturing method for a hook-and-loop fastener that is integrated into the surface of a cushion body, characterized by carrying out the following steps: a preparation step of preparing a fastener body that includes a resin substrate having a first surface and a second surface that are opposite surfaces, and a plurality of engaging elements provided in an element region of the first surface of the substrate; an adhesion step of adhering a flexible porous member to the second surface of the substrate; and a bending step of bending an edge portion of the substrate that is in an area outside the element region toward the second surface of the substrate together with the porous member. According to this method, the above-mentioned surface fastener of the present invention can be suitably produced.

[0016] In one embodiment of the present invention, the bending step preferably applies an external force to the edge portion until the edge portion is bent at an angle of 90 degrees or less relative to the main body portion. According to this method, the edge portion can recover to a certain extent due to its own elasticity and the repulsive force of the porous material, and the edge portion can be raised from the main body portion while maintaining the bent shape of the edge portion (i.e., the flange portion) in an appropriate manner. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a hook-and-loop fastener and a method for manufacturing the hook-and-loop fastener that can improve adhesion to a cushion body while maintaining the bent shape of the flange portion. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view showing a hook-and-loop fastener according to one embodiment of the present invention. [Figure 2] FIG. 2 is a plan view showing the hook-and-loop fastener of the embodiment. [Figure 3] FIG. 4 is a cross-sectional view illustrating the state before a bending step, illustrating the method for manufacturing the hook-and-loop fastener according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating the manufacturing method of the hook-and-loop fastener according to the embodiment, and is a plan view showing the state before the bending step. [Figure 5] 5A to 5C are cross-sectional views illustrating the state after a bending step, illustrating the method for manufacturing the hook-and-loop fastener according to the embodiment. [Figure 6] FIG. 4 is a cross-sectional view showing another example of the hook-and-loop fastener of the embodiment. [Figure 7] 4A and 4B are diagrams showing an example of installation of the hook-and-loop fastener of the embodiment on a molding die for a cushion body. [Figure 8] FIG. 4 is a diagram showing a state in which the hook-and-loop fasteners of the embodiment are stacked. [Figure 9] FIG. 10 is a partial perspective view showing a hook-and-loop fastener according to a modified example of the embodiment. [Figure 10] FIG. 10 is a partial perspective view showing a hook-and-loop fastener according to a modified example of the embodiment. [Figure 11] FIG. 10 is a diagram showing a state in which hook-and-loop fasteners of comparative examples are stacked. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The hook-and-loop fastener 1 of this embodiment is integrated with the surface of a cushion that constitutes a vehicle seat or chair, and is used to attach a covering material to the cushion.

[0020] (1 hook-and-loop fastener configuration) The configuration of the hook-and-loop fastener 1 of this embodiment will be described with reference to Figures 1 and 2. Figure 1 is a cross-sectional view taken along line AA in Figure 2.

[0021] The hook-and-loop fastener 1 comprises a resin substrate 20 having a first surface 21 and a second surface 22 which are opposite surfaces, a plurality of engaging elements 31 provided in an element region R on the first surface 21 of the substrate 20, and a flexible porous member 40 provided on the second surface 22 of the substrate 20. The substrate 20 and the plurality of engaging elements 31 constitute a fastener body 10 which is integrally formed from a synthetic resin or the like.

[0022] The substrate 20 includes a main body portion 23 including an element region R, and a plurality of flange portions 24A, 24B extending from the main body portion 23 and having a shape bent toward the second surface 22 side relative to the main body portion 23. In this embodiment, the substrate 20 has a band shape as a whole. In the following description, the length direction of the substrate 20 is defined as the X direction, and the width direction of the substrate 20 is defined as the Y direction. The direction from the first surface 21 to the second surface 22 of the main body 23 of the substrate 20 (corresponding to the predetermined direction of the present invention) is defined as the Z direction. The X, Y, and Z directions are perpendicular to each other.

[0023] The main body 23 includes an element region R where a plurality of engaging elements 31 and the like are formed. This element region R has a certain width in the Y direction and is continuous in the X direction (see FIG. 4). In addition to the plurality of engaging elements 31, a plurality of wall portions 32 and a plurality of magnetic elements 33 may also be formed in the element region R.

[0024] The specific configurations of the engaging elements 31, the wall portions 32, and the magnetic elements 33 can be similar to those of the prior art. For example, the engaging elements 31 have protrusions protruding from the first surface 21 of the substrate 20 and hook portions provided at the tips of the protrusions, and the multiple engaging elements 31 are provided at a predetermined pitch in each of the X and Y directions in the element region R. The wall portions 32 are provided along the X direction on both sides of the multiple engaging elements 31 in the Y direction. The magnetic elements 33 are made of synthetic resin containing a magnetic material, and are provided along the X direction in each region between the engaging elements 31 and the wall portions 32.

[0025] The flange portions 24A and 24B correspond to the flange portions of the present invention, and may be referred to as the first flange portion 24A and the second flange portion 24B below. The first flange portion 24A and the second flange portion 24B have the same configuration except for their arrangement relative to the main body portion 23.

[0026] Specifically, the first flange portion 24A extends from one end portion 231A in the Y direction of the main body portion 23. The base material 20 of this embodiment includes a plurality of first flange portions 24A arranged at predetermined intervals in the X direction. The second flange portion 24B extends from the other end 231B in the Y direction of the main body portion 23. The base material 20 of this embodiment includes a plurality of second flange portions 24B arranged at predetermined intervals in the X direction. It is preferable that the arrangement of the plurality of first flange portions 24A and the arrangement of the plurality of second flange portions 24B are offset in the X direction.

[0027] The flange portions 24A, 24B each have a shape bent toward the second surface 22 of the substrate 20 with respect to the main body portion 23. The bending angle θ of each of the flange portions 24A, 24B is not particularly limited, but is preferably 90±10 degrees, and more preferably less than 90 degrees. Note that the bending angle θ in this embodiment is the angle formed between the second surface 22 of the main body portion 23 and the second surfaces 22 of the flange portions 24A, 24B, as shown in FIG. 1 .

[0028] The porous member 40 may be made of any flexible porous material, such as a nonwoven fabric, a foam, or a mesh material. For example, the porous member 40 of this embodiment is made of urethane foam.

[0029] The porous member 40 is adhered to the second surface 22 of the substrate 20 by an arbitrary adhesive. That is, the porous member 40 is fixed to the second surface 22 of the substrate 20 via an arbitrary adhesive layer 47. The porous member 40 is provided on the second surface 22 of the substrate 20 so as to cover the main body portion 23 and the flange portions 24A, 24B, and has a shape that is bent together with the flange portions 24A, 24B toward the second surface 22 of the substrate 20 with respect to the main body portion 23.

[0030] Specifically, the porous member 40 includes a compressed portion 41A compressed between the main body portion 23 and the first flange portion 24A, and a compressed portion 41B compressed between the main body portion 23 and the second flange portion 24B. When the porous member 40, together with the flange portions 24A and 24B, is bent toward the second surface 22 of the substrate 20 relative to the main body portion 23, the porous member 40 is compressed to form the compressed portions 41A and 41B. The compressed portions 41A and 41B have higher density and strength than the non-compressed portion 43 and protruding portions 42A and 42B of the porous member 40, which will be described later. In FIG. 2, the ranges of the compressed portions 41A and 41B in the porous member 40 are indicated by two-dot chain lines. The compressed portions 41A and 41B may be hardened by welding or adhesive. The porous member 40 also includes a non-compressed portion 43 that is disposed in the main body portion 23 between the compressed portions 41A, 41B in the width direction (Y direction) of the substrate 20 and is not compressed by the flange portions 24A, 24B.

[0031] The porous member 40 also includes a protruding portion 42A that protrudes in the Z direction from the compressed portion 41A between the main body portion 23 and the first flange portion 24A, and a protruding portion 42B that protrudes in the Z direction from the compressed portion 41B between the main body portion 23 and the second flange portion 24B. In this embodiment, the protruding portions 42A and 42B protrude in the Z direction further than the flange portions 24A and 24B and the uncompressed portion 43, respectively. More specifically, the protruding portion 42A protrudes in the Z direction further than the tip of the first flange portion 24A bent toward the second surface 22 and the surface of the uncompressed portion 43 facing in the Z direction. Furthermore, the protruding portion 42B protrudes in the Z direction further than the tip of the second flange portion 24B bent toward the second surface 22 and the surface of the uncompressed portion 43 facing in the Z direction. In this embodiment, the protrusions 42A and 42B correspond to deformed portions of the porous member 40 that are flexed and deformed by the bending process of the substrate 20 described below, and are arranged alternately in the X direction, similar to the flange portions 24A and 24B.

[0032] Recesses 45 are formed in the porous member 40, each of which is surrounded by the protrusions 42A, 42B and the non-compressed portion 43 and has an opening in the Z direction. For example, in Fig. 2, the range of each recess 45 is illustrated by a two-dot chain line for some of the recesses 45. In this embodiment, the protrusions 42A and 42B are arranged alternately in the X direction, and therefore the recess 45 forms a closed space on both sides of the inclined direction inclined with respect to the Y direction within the XY plane. In other words, the recess 45 is open in both the X direction and the Y direction. Furthermore, the protrusion 42A forms recesses 45 with the protrusions 42B arranged on both sides of the protrusion 42A in the X direction. Similarly, the protrusion 42B forms recesses 45 with the protrusions 42A arranged on both sides of the protrusion 42B in the X direction.

[0033] (Method of manufacturing hook-and-loop fastener 1) A method for manufacturing the hook-and-loop fastener 1 according to this embodiment will be described. First, a fastener body 10P corresponding to the fastener body 10 before the flange portions 24A, 24B are formed is prepared (see FIG. 3). The fastener body 10P includes a strip-shaped base material 20P having a first surface 21 and a second surface 22 that are opposite surfaces, and a plurality of engaging elements 31 and the like provided in an element region R on the first surface 21 of the base material 20P.

[0034] Next, as shown in Fig. 3, a flat-plate-shaped porous member 40P is bonded to the second surface 22 of the substrate 20P (bonding step). The porous member 40P corresponds to the porous member 40 before the compressed portions 41A, 41B, etc. are formed, and has a flat bonding surface 44 that is bonded to the second surface 22 of the substrate 20P. The porous member 40P has a predetermined thickness D in the Z direction and is disposed so as to entirely cover the second surface 22 of the substrate 20P. The thickness D of the porous member 40P corresponds to the thickness of the non-compressed portions 43 described above, and is preferably at least half the extension length Lf of each of the flange portions 24A, 24B (see, for example, Figs. 1 and 4) but not more than the extension length Lf.

[0035] Next, the edge portions 25A and 25B, which are regions outside the element region R of the substrate 20P in the Y direction, are cut into a predetermined shape (cutting process). As a result, shapes corresponding to the plurality of flange portions 24A and 24B are formed in the edge portions 25A and 25B of the substrate 20P. Furthermore, in the cutting process, the porous member 40P is cut together with the substrate 20P. As a result, shapes corresponding to the plurality of flange portions 24A and 24B are formed in the porous member 40P (see FIG. 4). The specific technique for the cutting step is not limited to a specific one, but a rotary cutter can be used, for example. When a rotary cutter is used, the porous member 40P and the substrate 20P are conveyed in the X direction while being sandwiched between a pair of rotary cutters in the Z direction. During this cutting, the porous member 40P is compressed by the load applied by the rotary cutter, which includes a component in the opposite direction to the conveyance direction. Therefore, the cut surface of the porous member 40P may be inclined with respect to the Z direction.

[0036] Next, the edge portions 25A and 25B of the substrate 20P are bent together with the porous member 40P toward the second surface 22 of the substrate 20P relative to the main body portion 23 (bending process). At this time, as shown in FIG. 5, it is preferable to apply an external force F1 to the edge portions 25A and 25B until the bending angle of the edge portions 25A and 25B relative to the main body portion 23 becomes 90 degrees or less, preferably 0 degrees. At this time, the bent portions of the substrate 20P (i.e., one end 231A and the other end 231B of the main body portion 23) are bent until they are plastically deformed. Note that FIG. 5 is a cross-sectional view taken along line AA in FIG. 2. When the bending angle of the edge portions 25A and 25B relative to the main body portion 23 becomes 0 degrees, the edge portions 25A and 25B overlap the main body portion 23 in the Z direction via the compressed porous member 40P.

[0037] Thereafter, the external force F1 is released from the edge portions 25A, 25B of the base material 20P (springback process). At this time, the edge portions 25A, 25B of the base material 20P rise up relative to the main body portion 23 while recovering to some extent due to their own elasticity and the repulsive force of the porous member 40. Here, the bending angle θ of the edge portions 25A, 25B (i.e., the flange portions 24A, 24B) standing upright relative to the main body portion 23 is preferably 90±10 degrees, as shown in Fig. 1. Furthermore, the bending angle θ of the flange portions 24A, 24B is preferably 90° or less, but may be greater than 90°, as shown in Fig. 6. The compressed portions 41A, 41B and protruding portions 42A, 42B of the porous member 40 are formed together with the rising edge portions 25A, 25B of the substrate 20P. More specifically, because one end 231A and the other end 231B of the main body 23 are plastically deformed, the rising edge portions 25A, 25B of the substrate 20P can be maintained even when subjected to the repulsive force of the compressed porous member 40, thereby forming the compressed portions 41A, 41B and protruding portions 42A, 42B of the porous member 40.

[0038] After the flange portions 24A, 24B have achieved a desired bending angle θ through the spring back process, a hardening process may be carried out in which the compressed portions 41A, 41B are hardened by welding or adhesive. This completes the manufacture of the hook-and-loop fastener 1. A plurality of hook-and-loop fasteners 1 manufactured in this manner may be packed and shipped in a stacked state.

[0039] Although the above description has been given of the case where one hook-and-loop fastener 1 is manufactured, multiple hook-and-loop fasteners 1 may be manufactured simultaneously. For example, a wide composite body corresponding to a state in which multiple fastener bodies 10P are lined up in the Y direction may be prepared (preparation step), and a wide porous member 40P may be bonded to the composite body (bonding step). Thereafter, when cutting the composite body together with the wide porous member 40P, the end edge portions 25A, 25B of each fastener body 10P may be cut into a predetermined shape while cutting the composite body into multiple fastener bodies 10P (cutting step). Furthermore, before or after the bending step, a step of cutting a portion of the hook-and-loop fastener 1 together with the porous member 40 and the substrate 20 may be included. For example, in order to improve the flexibility of the hook-and-loop fastener 1, the hook-and-loop fastener 1 may be partially cut from both sides in the Y direction to form narrow portions.

[0040] (Installation of hook-and-loop fastener 1) A method for attaching the hook-and-loop fastener 1 to the cushion body will now be briefly described. First, as shown in Fig. 7, the hook-and-loop fastener 1 is placed on a base 52 provided in a molding die 51 for the cushion body. A magnet 53 such as a neodymium magnet is disposed within the base 52. This magnet 53 magnetically attracts the magnetic element 33 of the hook-and-loop fastener 1, thereby maintaining the position of the hook-and-loop fastener 1. At this time, since the bending angle θ of the flanges 24A, 24B is 90° or less, the worker can easily check the base 52, improving workability.

[0041] Next, foamed resin, which is the raw material of the cushion body, is injected into the molding die 51. As the foamed resin fills the periphery of the hook-and-loop fastener 1, it is received in the recesses 45 formed between the protrusions 42A, 42B and the uncompressed portions 43 of the porous member 40, and permeates into the interior of the porous member 40 while filling the recesses 45. Note that, because the protrusions 42A, 42B are alternately arranged in the X direction, the flow of the foamed resin is less likely to be stopped and it is easier to spread over the entire surface of the hook-and-loop fastener 1. At this time, the wall portion 32 of the hook-and-loop fastener 1 prevents the foamed resin from entering the element region R.

[0042] The foaming resin injected into the mold 51 foams and solidifies to form the cushion body 60. As a result, the hook-and-loop fastener 1 is integrated with the surface of the cushion body 60. In the hook-and-loop fastener 1 integrated with the surface of the cushion body 60, the flange portions 24A, 24B and the porous member 40 are disposed inside the cushion body 60.

[0043] (Effects of this embodiment) As described above, the hook-and-loop fastener 1 of this embodiment comprises a substrate 20 having a first surface 21 and a second surface 22 which are opposite surfaces, a plurality of engaging elements 31 provided in an element region R of the first surface 21 of the substrate 20, and a flexible porous member 40 provided on the second surface 22 of the substrate 20, wherein the substrate 20 comprises a main body portion 23 including the element region R, and flange portions 24A, 24B extending from the main body portion 23 and having a shape bent toward the second surface 22 relative to the main body portion 23, and the porous member 40 includes compressed portions 41A, 41B compressed between the main body portion 23 and each flange portion 24A, 24B.

[0044] In the hook-and-loop fastener 1 of this embodiment, the compressed portions 41A, 41B of the porous member 40 can maintain the bent shape of the flange portions 24A, 24B. Here, in order to specifically explain the effects of this embodiment, examples are shown of the state in which the hook-and-loop fasteners 1 of this embodiment are stacked (see FIG. 8) and the state in which the hook-and-loop fasteners 100 of the comparative example are stacked (FIG. 11). The hook-and-loop fastener 100 of the comparative example has a configuration in which the porous member 40 is removed from the hook-and-loop fastener 1 of this embodiment. In this comparative example, the same reference numerals as in this embodiment are used for the same configuration as in this embodiment.

[0045] As shown in Fig. 11, in the comparative example, the upper hook-and-loop fastener 100 may enter the space between the main body 23 of the lower hook-and-loop fastener 100 and the flanges 24A, 24B, applying a load F2 outward in the Y direction to the flanges 24A, 24B. The flanges 24A, 24B receiving this load F2 may rotate outward in the Y direction and bend back. Fig. 11 shows an example in which the load F2 outward in the Y direction is applied to the first flange 24A, causing the first flange 24A to bend back.

[0046] 8, in this embodiment, the compressed portions 41A, 41B of the porous member 40 in the lower hook-and-loop fastener 1 can support the upper hook-and-loop fastener 1. This makes it difficult for the upper hook-and-loop fastener 1 to enter the space between the main body 23 and the flange portions 24A, 24B in the lower hook-and-loop fastener 1, and makes it difficult for a load to be applied in a direction that widens the bend (outward in the Y direction) to the flange portions 24A, 24B of the lower hook-and-loop fastener 1. As a result, the bent shape of the flange portions 24A, 24B in the lower hook-and-loop fastener 1 can be maintained.

[0047] Furthermore, in this embodiment, even when the bending angle θ of the flange portions 24A, 24B is greater than 90 degrees (see FIG. 6, for example), the bent shape of the flange portions 24A, 24B can be maintained. For example, in the comparative example, when the bending angle θ of the flange portions 24A, 24B is greater than 90 degrees, a downward load is applied from the upper hook-and-loop fastener 1 to the flange portions 24A, 24B of the lower hook-and-loop fastener 1, and this load may be converted into a load in a direction that widens the bending of the flange portions 24A, 24B (outward in the Y direction). On the other hand, in this embodiment, the compressed portions 41A, 41B of the porous member 40 of the lower hook-and-loop fastener 1 receive the load of the upper hook-and-loop fastener 1, and can prevent the downward load from being applied to the flange portions 24A, 24B. This makes it possible to maintain the bent shape of the flange portions 24A, 24B.

[0048] Furthermore, since the raw material of the cushioning material can permeate the porous member 40, even if the porous member 40 is present between the flange portions 24A, 24B and the main body portion 23, the flange portions 24A, 24B are positioned in a state where they are inserted deeply into the cushion body 60. This allows the flange portions 24A, 24B to achieve their original purpose of adhering the hook-and-loop fastener 1 without impairing its adhesion. Furthermore, the raw material of the cushion body 60 permeates the porous member 40, thereby increasing the contact area between the porous member 40 and the cushion body 60 and improving the adhesion of the hook-and-loop fastener 1. Therefore, according to this embodiment, a hook-and-loop fastener 1 is provided that can improve adhesion to the cushion body 60 while maintaining the bent shape of the flange portions 24A, 24B.

[0049] In this embodiment, the porous member 40 is provided on the second surface 22 of the substrate 20 so as to cover the main body portion 23 and the flange portions 24A, 24B. With this configuration, the porous member 40 is bent between the main body portion 23 and the flange portions 24A, 24B, and the compressed portions 41A, 41B can be suitably formed.

[0050] In this embodiment, when the direction from the first surface 21 to the second surface 22 in the main body portion 23 is defined as a predetermined direction (Z direction), the porous member 40 further includes protrusions 42A, 42B that protrude in the predetermined direction beyond the flange portions 24A, 24B. According to this configuration, when the cushion body 60 is formed, the protrusions 42A and 42B can be disposed deep inside the cushion body 60, and the adhesion of the hook-and-loop fastener 1 can be further improved.

[0051] In this embodiment, the porous member 40 further includes a non-compressed portion 43 disposed in the main body portion 23, and the protruding portions 42A, 42B form a recess 45 between themselves and the non-compressed portion 43. In this configuration, when the cushion body 60 is formed, the raw material of the cushion body 60 flows into the recess 45 and solidifies, allowing the porous member 40 to embrace a portion of the cushion body 60. This allows the adhesion of the hook-and-loop fastener 1 to be further improved.

[0052] In this embodiment, the porous member 40 is made of a foam. With such a configuration, the porous member 40 is easily compressed, and the compressed portions 41A, 41B of the porous member 40 can be easily formed by bending the base material 20P.

[0053] In this embodiment, the compressed portions 41A, 41B are hardened by welding or adhesive. This configuration reduces the elastic force of the compressed portions 41A, 41B, and more suitably maintains the bent shape of the flange portions 24A, 24B.

[0054] In this embodiment, the substrate 20 has a first flange portion 24A extending from one side of the main body portion 23 in the width direction and a second flange portion 24B extending from the other side of the main body portion 23 in the width direction, and the porous member 40 includes a compressed portion 41A between the main body portion 23 and the first flange portion 24A, and a compressed portion 41B between the main body portion 23 and the second flange portion 24B. With this configuration, compressed portions 41A, 41B are formed on both sides of the main body 23 in the width direction, and each compressed portion 41A, 41B can share and support the load applied to the hook-and-loop fastener 1. This makes it possible to preferably maintain the bent shapes of the first flange portion 24A and the second flange portion 24B.

[0055] As described above, the manufacturing method of the hook-and-loop fastener 1 of this embodiment includes a preparation step of preparing a fastener main body 10P having a base material 20P and a plurality of engaging elements 31, a bonding step of bonding a flexible porous member 40P to the second surface 22 of the base material 20P, and a bending step of bending the edge portions 25A, 25B of the base material 20 together with the porous member 40P toward the second surface 22 of the base material 20P relative to the main body portion 23 of the base material 20P. According to this method, the above-mentioned hook-and-loop fastener 1 can be suitably manufactured.

[0056] In this embodiment, the bending step involves applying an external force F1 to edge portions 25A, 25B until the bending angle of edge portions 25A, 25B relative to main body portion 23 becomes 90 degrees or less. This method utilizes the fact that edge portions 25A, 25B restore to a certain extent due to their own elasticity and the repulsive force of porous member 40P, making it possible to favorably maintain the bent shape of edge portions 25A, 25B (i.e., flange portions 24A, 24B) while causing edge portions 25A, 25B to rise from main body portion 23.

[0057] In this embodiment, the thickness D of the compressed portions 41A, 41B in the Z direction before the bending step is preferably equal to or greater than half the extension length Lf of the flange portions 24A, 24B. This configuration allows the compressed portions 41A, 41B to be formed with increased density to achieve suitable strength. In this embodiment, the thickness D of the compressed portions 41A, 41B in the Z direction before the bending step is preferably equal to or less than the extension length Lf of the flange portions 24A, 24B. With this configuration, the protrusions 42A, 42B can be formed by the bending deformation of the porous member 40 during the bending step.

[0058] (Variation) In the above embodiment, deformation may be applied to maintain the bent shapes of the flange portions 24A and 24B. 9, the bending line of the first flange portion 24A (or the second flange portion 24B) may be curved inward in the Y direction. In this case, grooves may be formed in the second surface 22 of the base material 20 along the bending lines of the flange portions 24A, 24B. 10, a V-shaped groove 26 may be formed along the Z direction at a corner of the bent shape of the first flange portion 24A (or the second flange portion 24B). Such a V-shaped groove 26 can be formed, for example, by pressing a tapered tool against the corner.

[0059] In the above embodiment, the shapes and bending positions of the flange portions 24A and 24B can be changed as desired. For example, in the above embodiment, the edge portions 25A, 25B of the base material 20P are cut into a predetermined shape to form shapes corresponding to the plurality of flange portions 24A, 24B, but such a cutting step may not be performed, or a cutting step for other shapes may be performed. That is, the flange portions 24A, 24B may be at least the edge portions 25A, 25B of the base material 20P bent relative to the main body portion 23.

[0060] In the above embodiment, the base material 20 includes both the first flange portion 24A and the second flange portion 24B, but may include only one of them. For example, in the bending process of the above embodiment, one of the edge portions 25A, 25B of the base material 20P may be bent and the other may not be bent. In addition, the edge portions 25A, 25B of the base material 20P to be bent may be selected depending on the shape of the cushion body 60 to be attached.

[0061] In the above embodiment, the shape and dimensions of the porous member 40 can be changed as desired. For example, in the above embodiment, the porous member 40 (i.e., the porous member 40P) before being bent has a flat plate shape, but it may have other shapes. Here, the thickness D of the porous member 40P before being compressed only needs to be thick enough to form the compressed portions 41A, 41B between the main body portion 23 and the flange portions 24A, 24B. Furthermore, in the above embodiment, the porous member 40 has the protruding portions 42A and 42B, but the porous member 40 does not necessarily have to have the protruding portions 42A and 42B. In the above embodiment, the porous member 40 may not cover the entire second surface 22 of the substrate 20 , and a partial area of ​​the second surface 22 of the substrate 20 may be exposed from the porous member 40 . [Explanation of symbols]

[0062] 1...hook and loop fastener, 10, 10P...fastener body, 20, 20P...base material, 21...first surface, 22...second surface, 23...main body portion, 231A...one end portion, 231B...other end portion, 24A...first flange portion (flange portion), 24B...second flange portion (flange portion), 25A, 25B...edge portion, 26...V-shaped groove, 31...engaging element, 32...wall portion, 33...magnetic element, 40, 40P...porous member, 41A, 41B...compressed portion, 42A, 42B...protruding portion, 43...non-compressed portion, 44...adhesive surface, 45...recess, 47...adhesive layer, 51...molding mold, 52...base portion, 53...magnet, 60...cushion body, R...element region.

Claims

1. A hook-and-loop fastener (1) integrated into the surface of a cushion body (60), a resin substrate (20) having a first surface (21) and a second surface (22) that are opposite surfaces; a plurality of engaging elements (31) provided in an element region (R) of the first surface (21) of the base material (20); a porous member (40) provided on the second surface (22) of the substrate (20) and having flexibility; The substrate (20) is a main body portion (23) including the element region (R); and flange portions (24A, 24B) extending from the main body portion (23) and having a shape bent toward the second surface (22) with respect to the main body portion (23), The porous member (40) includes compressed portions (41A, 41B) compressed between the main body portion (23) and the flange portions (24A, 24B). A hook-and-loop fastener characterized by:

2. The porous member (40) is provided on the second surface (22) of the base material (20) so as to cover the main body portion (23) and the flange portions (24A, 24B).

2. The hook-and-loop fastener according to claim 1.

3. When the direction from the first surface (21) to the second surface (22) in the main body portion (23) is defined as a predetermined direction, The porous member (40) further includes protruding portions (42A, 42B) that protrude in the predetermined direction beyond the flange portions (24A, 24B).

2. The hook-and-loop fastener according to claim 1.

4. The porous member (40) further includes a non-compressed portion (43) disposed in the body portion (23), The protruding portions (42A, 42B) form recesses (45) between themselves and the non-compressed portion (43).

4. The hook-and-loop fastener according to claim 3.

5. The porous member (40) is formed of a foam.

2. The hook-and-loop fastener according to claim 1.

6. The compression parts (41A, 41B) are hardened by welding or adhesive.

2. The hook-and-loop fastener according to claim 1.

7. The base material (20) includes, as the flange portions (24A, 24B), a first flange portion (24A) extending from one side in the width direction of the main body portion (23) and a second flange portion (24B) extending from the other side in the width direction of the main body portion (23), The porous member (40) includes the compression portions (41A, 41B) between the main body portion (23) and the first flange portion (24A) and between the main body portion (23) and the second flange portion (24B), respectively.

2. The hook-and-loop fastener according to claim 1.

8. A method for manufacturing a hook-and-loop fastener (1) that is integrated onto the surface of a cushion body (60), comprising the steps of: A resin substrate (20P) having a first surface (21) and a second surface (22) which are opposite surfaces, and a plurality of engaging members provided in an element region (R) of the first surface (21) of the substrate (20P). a preparation step of preparing a fastener body (10P) including an element (31); a bonding step of bonding a porous member (40P) separate from the cushion body (60) to the second surface (22) of the base material (20P); a bending step of bending edge portions (25A, 25B) of the substrate (20P) together with the porous member (40P) toward the second surface (22) of the substrate (20P) with respect to the main body portion (23) of the substrate (20P) including the element region (R). A method for manufacturing a hook-and-loop fastener, comprising:

9. In the bending step, an external force is applied to the edge portions (25A, 25B) until the bending angle (θ) of the edge portions (25A, 25B) relative to the main body portion (23) becomes 90 degrees or less.

9. The method for manufacturing a hook-and-loop fastener according to claim 8.

Images