Fastener tape and method for manufacturing fastener tape

Abstract

A fastener tape (1) integrated with the surface of a pad body (60), the fastener tape (1) comprising: a resin base material (20) having a first surface (21) and a second surface (22) in a front-back relationship; a plurality of engagement 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). The base material (20) includes: a main body portion (23) including an element region (R); and flange sections (24A, 24B) extending from the main body section (23) and having a shape bent toward the second surface (22) side with respect to the main body section (23), and the porous member (40) includes compressed sections (41A, 41B) compressed between the main body section (23) and the flange sections (24A, 24B).

Description

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

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

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

[0003] Patent Document 1 discloses a hook-and-loop fastener (fastening tape) used in the aforementioned installation method. The hook-and-loop fastener comprises a strip-shaped base material and a plurality of engaging elements protruding from the base material. Furthermore, the base material comprises a flange portion that is bent relative to a main body portion on which the engaging elements are disposed, toward a side opposite to the side on which the engaging elements are disposed. The flange portion is configured to be deeply inserted into the pad, thereby enhancing the adhesion between the hook-and-loop fastener and the pad.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2018-99516

[0007] Summary of the Invention

[0008] However, the prior art disclosed in Patent Document 1 has the following problem: when a load is applied to the hook-and-loop tape during distribution before integration with the pad, the flange portion is easily bent and restored by the load. For example, when multiple hook-and-loop tapes are packed in a stacked state, the flange portion of the lower hook-and-loop tape may be bent and restored by the load applied by the upper hook-and-loop tape.

[0009] An object of the present invention is to provide a hook and loop fastener tape and a method for manufacturing the same, which can maintain the bent shape of the flange portion and improve the adhesion with the pad body.

[0010] One embodiment of the present invention is a fastener tape integrated with the surface of a pad body, which includes: a resin base material, which has a first surface and a second surface in a front-back relationship; a plurality of snap-fit ​​elements, which are arranged in an element area on the first surface of the base material; and a porous component, which is arranged on the second surface of the base material and has flexibility, the base material including: a main body including the element area; and a flange portion extending from the main body and having a shape bent toward the second surface relative to the main body, the porous component including a compression portion compressed between the main body and the flange portion.

[0011] In such a structure, the compressed portion of the porous member can support the load applied to the hook and loop tape, so that the flange portion is less likely to be loaded in a direction that expands the bent shape.

[0012] Furthermore, the mat material's raw material can penetrate the porous component. Therefore, even when the porous component is positioned between the flange and the main body, the flange remains deeply embedded in the mat. This ensures high adhesion of the hook-and-loop fastener without compromising the flange's primary purpose of enhancing the fastener's adhesion. Furthermore, the penetration of the mat material's raw material into the porous component increases the contact area between the hook-and-loop fastener and the mat material, further enhancing the fastener's adhesion.

[0013] Therefore, according to one aspect of the present invention, it is possible to provide a fastener tape that can maintain the bent shape of the flange portion and improve the adhesion with the pad body.

[0014] In one aspect of the present invention, the porous member is preferably provided on the second surface of the substrate so as to cover the main body portion and the flange portion.

[0015] According to such a structure, the porous member can be formed into a shape bent between the main body portion and the flange portion, which is suitable for forming the compression portion.

[0016] In one aspect of the present invention, the porous member preferably further includes a protrusion that protrudes further than the flange portion in a predetermined direction when a direction from the first surface toward the second surface in the main body is defined as the predetermined direction.

[0017] According to such a structure, when forming the pad body, the protrusion can be arranged deep inside the pad body, and the adhesion of the fastener tape can be further improved.

[0018] In one aspect of the present invention, it is preferred that the porous member further include a non-compressed portion disposed in the main body portion, and a recessed portion be formed between the protruding portion and the non-compressed portion.

[0019] According to this structure, when the pad body is formed, the raw material of the pad body flows into the recessed portion and solidifies, whereby the porous member can embrace a portion of the pad body, thereby further improving the adhesion of the hook and loop tape.

[0020] In one aspect of the present invention, the porous member is preferably formed of a foam.

[0021] In such a structure, the porous member can be easily compressed, and the compressed portion of the porous member can be easily formed by bending the base material.

[0022] In one aspect of the present invention, the compressed portion may be solidified by welding or an adhesive.

[0023] According to such a structure, the elastic force of the compression portion can be suppressed, and the bent shape of the flange portion can be maintained more appropriately.

[0024] In one embodiment of the present invention, the base material may include a first flange portion and a second flange portion as the flange portion, the first flange portion extending from one side in the width direction of the main body portion, and the second flange portion extending from the other side in the width direction of the main body portion, and the porous component includes the compression portion between the main body portion and the first flange portion and between the main body portion and the second flange portion, respectively.

[0025] According to this structure, since the compressed portions are formed on both sides of the body in the width direction, the compressed portions can share and support the load applied to the hook and loop tape, thereby being suitable for maintaining the bent shapes of the first and second flange portions.

[0026] One embodiment of the present invention is a method for manufacturing a fastener integrated with the surface of a pad body, characterized in that the following processes are implemented: a preparation process for preparing a fastener main body, the fastener main body including: a resin substrate having a first surface and a second surface forming a front-back relationship; and a plurality of engaging elements arranged in an element area of ​​the first surface of the substrate; a bonding process for bonding a flexible porous component to the second surface of the substrate; and a bending process for bending the end edge of the substrate, which is an outer area compared to the element area, toward the second surface side of the substrate together with the porous component.

[0027] According to such a method, the above-mentioned fastening tape of the present invention can be suitably produced.

[0028] In one aspect of the present invention, preferably, in the bending step, an external force is applied to the end edge portion until a bending angle of the end edge portion relative to the main body portion becomes 90 degrees or less.

[0029] According to this method, the edge portion can be raised from the main body by utilizing the fact that the edge portion recovers to a certain extent due to its own elastic force or the repulsive force of the porous member, and the bent shape of the edge portion (i.e., the flange portion) can be appropriately maintained.

[0030] Effects of the Invention

[0031] According to the present invention, it is possible to provide a hook and loop fastener tape that can maintain the bent shape of the flange portion and improve the adhesion with the pad body, and a method for manufacturing the hook and loop fastener tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG. 1 is a cross-sectional view showing a hook and loop fastener according to an embodiment of the present invention.

[0033] FIG. 2 is a plan view showing the fastening tape according to the embodiment.

[0034] FIG. 3 is a diagram for explaining the method for manufacturing the fastener tape according to the embodiment, and is a cross-sectional view showing a state before a bending step.

[0035] FIG. 4 is a diagram for explaining the method for manufacturing the fastener tape according to the embodiment, and is a plan view showing a state before a bending step.

[0036] FIG. 5 is a diagram for explaining the method for manufacturing the hook and loop fastener according to the embodiment, and is a cross-sectional view showing a state after a bending step.

[0037] FIG6 is a cross-sectional view showing another example of the fastener tape according to the embodiment.

[0038] FIG. 7 is a diagram showing an example of installation of the fastening tape relative to a molding die of the pad body according to the embodiment.

[0039] FIG. 8 is a diagram showing a state where the fastening tapes according to the embodiment are stacked.

[0040] FIG. 9 is a partial perspective view showing a fastening tape according to a modified example of the embodiment.

[0041] FIG. 10 is a partial perspective view showing a fastening tape according to a modified example of the embodiment.

[0042] FIG. 11 is a diagram showing a state in which hook and loop fasteners according to a comparative example are stacked.

[0043] Description of Reference Numerals

[0044] 1…Hook-and-loop fastener; 10, 10P…Hook-and-loop fastener body; 20, 20P…Base material; 21…First surface; 22…Second surface; 23…Main body; 231A…One end portion; 231B…Other end portion; 24A…First flange portion (flange portion); 24B…Second flange portion (flange portion); 25A, 25B…End edge portion; 26…V-groove; 31…Engineer; 32…Wall portion; 33…Magnetic element; 40, 40P…Porous component; 41A, 41B…Compression portion; 42A, 42B…Protrusion; 43…Non-compression portion; 44…Adhesive surface; 45…Concave portion; 47…Adhesive layer; 51…Molding die; 52…Base portion; 53…Magnet; 60…Pad; R…Element region. DETAILED DESCRIPTION

[0045] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0046] A hook-and-loop fastener 1 of the present embodiment is integrated with the surface of a cushion constituting a seat or a chair of a vehicle, and is used to attach a surface material to the cushion.

[0047] (Hook-and-loop 1 structure)

[0048] The structure of the hook and loop fastener 1 of this embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a cross-sectional view taken along line AA of Fig. 2 .

[0049] The hook-and-loop fastener 1 includes a resin base material 20 having a first surface 21 and a second surface 22 in a front-to-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. The base material 20 and the plurality of engaging elements 31 constitute a hook-and-loop fastener body 10 integrally formed of a synthetic resin or the like.

[0050] The base material 20 includes a main body portion 23 including the device region R, and a plurality of flange portions 24A and 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 .

[0051] In this embodiment, the substrate 20 has an overall strip shape. In the following description, the longitudinal direction of the substrate 20 is referred to as the X direction, and the width direction of the substrate 20 is referred to as the Y direction. Furthermore, the direction from the first surface 21 toward the second surface 22 of the main body 23 of the substrate 20 (corresponding to the prescribed direction of the present invention) is referred to as the Z direction. The X, Y, and Z directions are orthogonal to each other.

[0052] The main body 23 includes an element region R, which is a region where a plurality of engaging elements 31 and the like are formed. The element region R has a certain width in the Y direction and is continuous in the X direction (see FIG. 4 ). Alternatively, the element region R may include not only the plurality of engaging elements 31 but also a plurality of wall portions 32 or a plurality of magnetic elements 33 and the like.

[0053] The specific structures of the engaging elements 31, wall portions 32, and magnetic elements 33 can be the same as those of the prior art. For example, the engaging elements 31 include a protrusion protruding from the first surface 21 of the substrate 20 and a hook portion provided at the tip of the protrusion. Multiple engaging elements 31 are arranged at predetermined intervals in the X and Y directions within the element region R. The wall portions 32 are provided along the X direction on both sides of the Y direction relative to the multiple engaging elements 31. The magnetic elements 33 are formed of a synthetic resin containing a magnetic material and are provided along the X direction within each region between the engaging elements 31 and the wall portions 32.

[0054] The flanges 24A and 24B correspond to the flanges of the present invention and are hereinafter referred to as the first flange 24A and the second flange 24B.

[0055] Specifically, the first flange portion 24A extends from one end portion 231A in the Y direction of the main body portion 23. The base member 20 of the present embodiment includes a plurality of first flange portions 24A arranged at predetermined intervals in the X direction.

[0056] The second flange portion 24B extends from the other end portion 231B in the Y direction of the main body portion 23. The base member 20 of this embodiment includes a plurality of second flange portions 24B arranged at predetermined intervals in the X direction. Furthermore, it is preferable that the first flange portions 24A and the second flange portions 24B are arranged with an offset in the X direction.

[0057] Each flange portion 24A, 24B has a shape that is bent relative to the main body portion 23 toward the second surface 22 of the base material 20. The bending angle θ of each flange portion 24A, 24B is not particularly limited, but is preferably 90±10 degrees, and more preferably less than 90 degrees. As shown in FIG1 , the bending angle θ in this embodiment refers to the angle formed between the second surface 22 of the main body portion 23 and the second surface 22 of the flange portions 24A, 24B.

[0058] The porous member 40 can be formed of any flexible porous material, and examples of the porous material include nonwoven fabric, foam, and mesh. For example, the porous member 40 of this embodiment is formed of polyurethane, which is a foam.

[0059] The porous member 40 is bonded to the second surface 22 of the substrate 20 via an arbitrary adhesive material. 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 23 and the flanges 24A and 24B, and has a shape that is bent toward the second surface 22 of the substrate 20 relative to the main body 23 together with the flanges 24A and 24B.

[0060] Specifically, the porous member 40 includes a compressed portion 41A compressed between the main body 23 and the first flange 24A, and a compressed portion 41B compressed between the main body 23 and the second flange 24B. When the porous member 40, along with the flanges 24A and 24B, is bent relative to the main body 23 toward the second surface 22 of the substrate 20, the porous member 40 is compressed to form the compressed portions 41A and 41B. The compressed portions 41A and 41B have a higher density and strength than the non-compressed portion 43 or the protrusions 42A and 42B described later in the porous member 40. In FIG2 , the respective ranges of the compressed portions 41A and 41B in the porous member 40 are indicated by two-dot chain lines. Furthermore, the compressed portions 41A and 41B can be solidified by welding or adhesive.

[0061] The porous member 40 includes a non-compressed portion 43 that is disposed in the main body 23 between the compressed portions 41A and 41B in the width direction (Y direction) of the substrate 20 and is not compressed by the flange portions 24A and 24B.

[0062] The porous member 40 also includes a protrusion 42A that protrudes in the Z direction from the compressed portion 41A between the main body 23 and the first flange 24A, and a protrusion 42B that protrudes in the Z direction from the compressed portion 41B between the main body 23 and the second flange 24B. The protrusions 42A and 42B of this embodiment protrude in the Z direction relative to the flanges 24A and 24B and the uncompressed portion 43, respectively. More specifically, the protrusion 42A protrudes in the Z direction relative to the tip of the first flange 24A, which is bent toward the second surface 22, and the surface of the uncompressed portion 43 that faces the Z direction. Furthermore, the protrusion 42B protrudes in the Z direction relative to the tip of the second flange 24B, which is bent toward the second surface 22, and the surface of the uncompressed portion 43 that faces the Z direction.

[0063] In the present embodiment, the protrusions 42A and 42B correspond to deformed portions of the porous member 40 that are deformed by bending in a bending step of the base material 20 described later, and are arranged alternately in the X direction similarly to the flanges 24A and 24B.

[0064] The porous member 40 is formed with a recessed portion 45 that is surrounded by the protrusions 42A and 42B and the non-compressed portion 43 and opens in the Z direction. For example, in FIG2 , the range of some of the recessed portions 45 is illustrated by two-dot chain lines.

[0065] Furthermore, in this embodiment, since the protrusions 42A and 42B are arranged alternately in the X-direction, the recesses 45 form enclosed spaces on both sides of the XY plane, obliquely relative to the Y-direction. In other words, the recesses 45 are open in both the X- and Y-directions. Furthermore, recesses 45 are formed between the protrusions 42A and the protrusions 42B arranged on either side of the protrusion 42A in the X-direction. Similarly, recesses 45 are formed between the protrusions 42B and the protrusions 42A arranged on either side of the protrusion 42B in the X-direction.

[0066] (Method for manufacturing the hook-and-loop fastener 1)

[0067] A method for manufacturing the fastening tape 1 according to this embodiment will be described.

[0068] First, a hook-and-loop tape body 10P (see FIG. 3 ) corresponding to the hook-and-loop tape body 10 before the flanges 24A and 24B are formed is prepared. The hook-and-loop tape body 10P includes a strip-shaped base material 20P having a first surface 21 and a second surface 22 in a front-to-back relationship, 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.

[0069] Next, as shown in FIG3 , 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 planar bonding surface 44 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 positioned 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 portion 43 described above and is preferably at least half of the extension length Lf of each flange portion 24A, 24B (see, for example, FIG1 and FIG4 ) and not more than the extension length Lf.

[0070] Next, the edge portions 25A and 25B of the substrate 20P located outside the device region R in the Y direction are cut into a predetermined shape (cutting step). This results in shapes corresponding to the plurality of flanges 24A and 24B being formed on the edge portions 25A and 25B of the substrate 20P. Furthermore, during the cutting step, the porous member 40P is cut along with the substrate 20P. This results in shapes corresponding to the plurality of flanges 24A and 24B being formed on the porous member 40P (see FIG. 4 ).

[0071] The specific method of the cutting step is arbitrary; for example, a rotary cutter can be used. When using a rotary cutter, while the porous member 40P and substrate 20P are being transported along the X-direction, a pair of rotary cutters cut the porous member 40P while holding them in the Z-direction. During this cutting process, the porous member 40P is compressed by a load from the rotary cutters, including a component in the direction opposite to the transport direction. Consequently, the cut surface of the porous member 40P may be tilted relative to the Z-direction.

[0072] Next, the end edges 25A, 25B of the substrate 20P are bent together with the porous component 40P relative to the main body 23 toward the second surface 22 of the substrate 20P (bending step). At this time, as shown in FIG5 , it is preferred to apply an external force F1 to the end edges 25A, 25B until the bending angle of the end edges 25A, 25B relative to the main body 23 is less than 90 degrees, preferably 0 degrees. At this time, the bent portion of the substrate 20P (i.e., one end 231A and the other end 231B of the main body 23) is bent until plastic deformation occurs. In addition, FIG5 is a cross-sectional view corresponding to the AA line of FIG2 . When the bending angle of the end edges 25A, 25B relative to the main body 23 is 0 degrees, the end edges 25A, 25B are in a state of overlapping with the main body 23 in the Z direction via the porous component 40P in a compressed state.

[0073] Then, the external force F1 is released from the edge portions 25A, 25B of the substrate 20P (rebound step). At this time, the edge portions 25A, 25B of the substrate 20P stand upright relative to the main body 23 while recovering to some extent due to their own elastic force or the repulsive force of the porous member 40 .

[0074] Here, as shown in FIG1 , the bending angle θ of the end edges 25A, 25B (i.e., the flanges 24A, 24B) in the state of standing upright relative to the main body 23 is preferably 90±10 degrees. Furthermore, the bending angle θ of the flanges 24A, 24B is preferably 90° or less, but may be greater than 90° as shown in FIG6 .

[0075] Furthermore, the compressed portions 41A, 41B and the protruding portions 42A, 42B of the porous member 40 are formed simultaneously with the rising of the end edges 25A, 25B of the substrate 20P. More specifically, because the one end 231A and the other end 231B of the main body 23 undergo plastic deformation, the end edges 25A, 25B of the substrate 20P are maintained in their upright position even when subjected to the repulsive force of the compressed porous member 40, thereby forming the compressed portions 41A, 41B and the protruding portions 42A, 42B of the porous member 40.

[0076] After the flange portions 24A and 24B are bent at the preferred angle θ by the spring-back step, a curing step may be performed to cure the compressed portions 41A and 41B by welding or using an adhesive.

[0077] Thus, the fastening tape 1 is manufactured. The plurality of fastening tapes 1 manufactured in this manner can be packed and shipped in a stacked state.

[0078] While the above description describes the production of a single hook-and-loop fastener 1, multiple hook-and-loop fasteners 1 can also be produced simultaneously. For example, a wide composite body corresponding to a plurality of hook-and-loop fastener bodies 10P arranged in the Y direction can be prepared (preparation step), and the wide porous member 40P can be bonded to the composite body (bonding step). Subsequently, when the composite body and the wide porous member 40P are cut together, the composite body can be divided into multiple hook-and-loop fastener bodies 10P, and the end edges 25A and 25B of each hook-and-loop fastener body 10P can be cut into a predetermined shape (cutting step).

[0079] Furthermore, a step of cutting a portion of the hook and loop tape 1 together with the porous member 40 and the base material 20 may be included before or after the bending step. For example, in order to improve the flexibility of the hook and loop tape 1, the hook and loop tape 1 may be partially cut from both sides in the Y direction to form narrow portions.

[0080] (Setting of the hook and loop strap 1)

[0081] A method of attaching the fastening tape 1 to the pad body will be briefly described.

[0082] First, as shown in Figure 7, the hook-and-loop fastener 1 is placed on a base 52 within a mold 51 of the pad body. Furthermore, 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, by setting the bending angle θ of the flanges 24A and 24B to 90° or less, the operator can easily identify the base 52, thereby improving operability.

[0083] Next, the foamed resin, which serves as the raw material for the cushion body, is injected into the mold 51. When the foamed resin fills the periphery of the hook and loop tape 1, it is caught in the recessed portion 45 formed between the protrusions 42A and 42B of the porous member 40 and the non-compressed portion 43, filling the recessed portion 45 and penetrating into the porous member 40. Furthermore, since the protrusions 42A and 42B are arranged in a staggered manner in the X direction, the flow of the foamed resin is less likely to be stopped, and it easily spreads over the entire surface of the hook and loop tape 1.

[0084] Furthermore, at this time, the wall portion 32 of the fastener tape 1 prevents the foamed resin from penetrating into the element region R.

[0085] The foamed resin injected into the mold 51 foams and solidifies to form the pad 60. Thus, the hook and loop fastener 1 is integrated with the surface of the pad 60. In the hook and loop fastener 1 integrated with the surface of the pad 60, the flanges 24A and 24B or the porous member 40 are arranged inside the pad 60.

[0086] (Effects of this embodiment)

[0087] As described above, the fastener 1 of this embodiment includes: a base material 20, which has a first surface 21 and a second surface 22 in a front-back relationship; a plurality of snap-fit ​​elements 31, which are arranged in an element area R of the first surface 21 of the base material 20; and a porous component 40, which is arranged on the second surface 22 of the base material 20 and has flexibility, and the base material 20 includes: a main body 23, which includes the element area R; and flange portions 24A, 24B, which extend from the main body 23 and have a shape bent toward the second surface 22 side relative to the main body 23, and the porous component 40 includes compressed portions 41A, 41B compressed between the main body 23 and the flange portions 24A, 24B.

[0088] In the fastening tape 1 of this embodiment, the bent shapes of the flange portions 24A and 24B can be maintained by the compressed portions 41A and 41B of the porous member 40 .

[0089] Here, to specifically illustrate the effects of this embodiment, a stacked state of the hook-and-loop fastener tapes 1 of this embodiment (see FIG8 ) and a stacked state of the hook-and-loop fastener tapes 100 of a comparative example ( FIG11 ) are illustrated. The hook-and-loop fastener tape 100 of the comparative example has a structure obtained by removing the porous member 40 from the hook-and-loop fastener tape 1 of this embodiment. In this comparative example, components identical to those of the present embodiment are denoted by the same reference numerals as those of the present embodiment.

[0090] As shown in FIG11 , in the comparative example, the upper hook-and-loop fastener tape 100 may enter the space between the main body 23 and the flanges 24A, 24B of the lower hook-and-loop fastener tape 100, applying a load F2 outward in the Y direction to the flanges 24A, 24B. The flanges 24A, 24B, subjected to this load F2, may rotate outward in the Y direction, bending back. FIG11 also illustrates an example in which a load F2 outward in the Y direction is applied to the first flange 24A, causing it to bend back.

[0091] On the other hand, as shown in FIG8 , in this embodiment, the compressed portions 41A and 41B of the porous member 40 of the lower hook-and-loop fastener tape 1 support the upper hook-and-loop fastener tape 1. This makes it difficult for the upper hook-and-loop fastener tape 1 to enter the space between the main body 23 and the flanges 24A and 24B of the lower hook-and-loop fastener tape 1, and thus reduces the load applied to the flanges 24A and 24B of the lower hook-and-loop fastener tape 1 in the direction of bending and unfolding (outward in the Y direction). As a result, the bent shape of the flanges 24A and 24B of the lower hook-and-loop fastener tape 1 can be maintained.

[0092] Furthermore, in the present embodiment, even when the bending angle θ of the flange portions 24A and 24B is larger than 90 degrees (see, for example, FIG. 6 ), the bent shapes of the flange portions 24A and 24B can be maintained.

[0093] 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 sometimes 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 is converted into a load in the direction of bending and expanding the flange portions 24A, 24B (outward along the Y direction).

[0094] On the other hand, in this embodiment, the compressed portions 41A and 41B of the porous member 40 of the lower hook-and-loop tape 1 receive the load of the upper hook-and-loop tape 1, thereby suppressing the downward load on the flanges 24A and 24B.

[0095] Furthermore, because the raw material of the mat material can permeate the porous member 40, even when the porous member 40 is positioned between the flanges 24A, 24B and the main body 23, the flanges 24A, 24B are positioned so as to be deeply inserted into the mat body 60. This ensures high adhesion of the hook-and-loop fastener 1 without compromising the original purpose of providing the flanges 24A, 24B, which is to enhance the adhesion of the hook-and-loop fastener 1. Furthermore, since the raw material of the mat body 60 permeates the porous member 40, the contact area between the porous member 40 and the mat body 60 is increased, thereby enhancing the adhesion of the hook-and-loop fastener 1.

[0096] Therefore, according to the present embodiment, it is possible to provide the fastening tape 1 which can maintain the bent shape of the flange portions 24A, 24B and improve the adhesion with the pad body 60 .

[0097] 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 23 and the flanges 24A and 24B. With this structure, the porous member 40 is bent between the main body 23 and the flanges 24A and 24B, and is suitable for forming the compressed portions 41A and 41B.

[0098] In this embodiment, the porous component 40 also includes protrusions 42A and 42B, which protrude in the prescribed direction compared to the flange portions 24A and 24B when the direction from the first surface 21 toward the second surface 22 in the main body 23 is set as a prescribed direction (Z direction).

[0099] According to such a structure, when forming the pad body 60, the protrusions 42A and 42B can be arranged deep inside the pad body 60, and the adhesion of the fastener tape 1 can be further improved.

[0100] In the present embodiment, the porous member 40 further includes a non-compressed portion 43 disposed in the main body portion 23 , and a recessed portion 45 is formed between the protruding portions 42A and 42B and the non-compressed portion 43 .

[0101] In such a structure, when forming the pad body 60, the raw material of the pad body 60 flows into the recessed portion 45 and solidifies, whereby the porous member 40 can embrace a portion of the pad body 60. This can further improve the adhesion of the fastener tape 1.

[0102] In this embodiment, the porous member 40 is formed of a foam. In such a structure, the porous member 40 can be easily compressed, and the compressed portions 41A and 41B of the porous member 40 can be easily formed by bending the base material 20P.

[0103] In this embodiment, the compressed portions 41A and 41B are solidified by welding or adhesive. This structure can suppress the elastic force of the compressed portions 41A and 41B, making it more suitable to maintain the bent shape of the flange portions 24A and 24B.

[0104] In this embodiment, the substrate 20 includes: a first flange portion 24A extending from one side of the width direction of the main body 23, and a second flange portion 24B extending from the other side of the width direction of the main body 23, and the porous component 40 includes a compression portion 41A between the main body 23 and the first flange portion 24A, and includes a compression portion 41B between the main body 23 and the second flange portion 24B.

[0105] According to this structure, since the compressed portions 41A and 41B are formed on both sides of the body portion 23 in the width direction, the compressed portions 41A and 41B can share and support the load applied to the fastening tape 1. This can appropriately maintain the bent shapes of the first flange portion 24A and the second flange portion 24B.

[0106] As described above, the manufacturing method of the hook and loop fastener 1 involved in this embodiment implements the following processes: a preparation process, preparing a hook and loop fastener main body 10P including a substrate 20P and a plurality of snap-fit ​​elements 31; a bonding process, bonding a flexible porous component 40P to the second surface 22 of the substrate 20P; and a bending process, bending the end edges 25A, 25B of the substrate 20 together with the porous component 40P toward the second surface 22 side of the substrate 20P relative to the main body 23 of the substrate 20P.

[0107] According to such a method, the above-mentioned fastener tape 1 can be suitably manufactured.

[0108] In this embodiment, during the bending step, an external force F1 is applied to the end edges 25A, 25B until the bending angle of the end edges 25A, 25B relative to the main body 23 becomes 90 degrees or less. This method utilizes the fact that the end edges 25A, 25B are restored to a certain extent by their own elastic force or the repulsive force of the porous member 40P, so that the end edges 25A, 25B can be raised from the main body 23, and is suitable for maintaining the bent shape of the end edges 25A, 25B (i.e., the flanges 24A, 24B).

[0109] In this embodiment, the thickness D of the compressed portions 41A and 41B in the Z direction before the bending step is preferably at least half the extension length Lf of the flange portions 24A and 24B. This configuration increases the density of the compressed portions 41A and 41B and provides suitable strength.

[0110] In this embodiment, the thickness D of the compressed portions 41A and 41B in the Z direction before the bending step is preferably less than the extension length Lf of the flange portions 24A and 24B. With this configuration, the porous member 40 can be bent and deformed in the bending step to form the protrusions 42A and 42B.

[0111] (Variation)

[0112] In the above-described embodiment, deformation may be performed to maintain the bent shapes of the flange portions 24A and 24B.

[0113] 9 , the bending line of the first flange portion 24A (or the second flange portion 24B) may be bent inward in the Y direction. In this case, grooves along the bending lines of the flange portions 24A and 24B may be formed on the second surface 22 of the base material 20 .

[0114] 10 , a V-groove 26 along the Z direction may be formed at a corner of the first flange 24A (or second flange 24B) by bending the first flange 24A (or second flange 24B). Such a V-groove 26 can be formed by, for example, pressing a tapered tool against the corner.

[0115] In the above-described embodiment, the shapes, bending positions, etc. of the flange portions 24A and 24B can be arbitrarily changed.

[0116] For example, in the above embodiment, the shapes corresponding to the plurality of flanges 24A and 24B are formed by cutting the edge portions 25A and 25B of the substrate 20P into a predetermined shape. However, this cutting step may be omitted, and a cutting step may be performed to form another shape. In other words, the flanges 24A and 24B may be at least the edge portions 25A and 25B of the substrate 20P that are bent relative to the main body 23.

[0117] Furthermore, in the above embodiment, the base material 20 includes the first flange portion 24A and the second flange portion 24B, but it may include either one. For example, in the bending process of the above embodiment, one of the end edges 25A and 25B of the base material 20P may be bent while the other is not bent. Furthermore, the end edges 25A and 25B of the base material 20P to be bent may be selected based on the shape of the pad 60 to be mounted.

[0118] In the above-described embodiment, the shape and size of the porous member 40 can be arbitrarily changed.

[0119] For example, in the above embodiment, the porous member 40 (i.e., the porous member 40P) has a flat plate shape before being bent, but may have other shapes. Here, the thickness D of the porous member 40P before being compressed is at least sufficient to form the compressed portions 41A and 41B between the main body 23 and the flange portions 24A and 24B.

[0120] Furthermore, in the above embodiment, the porous member 40 includes the protrusions 42A and 42B, but may not include the protrusions 42A and 42B.

[0121] Furthermore, in the above embodiment, the porous member 40 may not cover the entire second surface 22 of the substrate 20 , but may expose a partial area of ​​the second surface 22 of the substrate 20 from the porous member 40 .

Claims

1. A hook and loop fastener, which is integrated with the surface of a pad (60), wherein the hook and loop fastener (1) is characterized in that it comprises: A resin substrate (20) having a first surface (21) and a second surface (22) in a front-back relationship; A plurality of engaging elements (31) disposed in an element region (R) of the first surface (21) of the substrate (20); as well as A porous member (40) is provided on the second surface (22) of the substrate (20) and has flexibility. The substrate (20) comprises: a main body portion (23) including the element region (R); as well as 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), The porous member (40) includes compressed portions (41A, 41B) compressed between the main body (23) and the flange portions (24A, 24B).

2. The hook and loop fastener according to claim 1, wherein: The porous member (40) is provided on the second surface (22) of the base material (20) so as to cover the main body (23) and the flanges (24A, 24B).

3. The hook and loop fastener according to claim 1, wherein: The porous component (40) further has protrusions (42A, 42B), and when the direction from the first surface (21) toward the second surface (22) in the main body (23) is set as a prescribed direction, the protrusions (42A, 42B) protrude in the prescribed direction compared to the flanges (24A, 24B).

4. The hook and loop fastener according to claim 3, wherein: The porous member (40) further includes a non-compressed portion (43) disposed on the main body (23). A recessed portion (45) is formed between the protruding portions (42A, 42B) and the non-compressed portion (43).

5. The hook and loop fastener according to claim 1, wherein: The porous component (40) is formed of a foam.

6. The hook and loop fastener according to claim 1, wherein: The compressed portions (41A, 41B) are solidified by welding or adhesive.

7. The hook and loop fastener according to claim 1, wherein: The base material (20) includes a first flange portion (24A) and a second flange portion (24B) as the flange portions (24A, 24B), the first flange portion (24A) extending from one side in the width direction of the main body portion (23), and the 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 (23) and the first flange (24A) and between the main body (23) and the second flange (24B), respectively.

8. A method for manufacturing a hook and loop fastener, wherein the hook and loop fastener (1) is integrated with the surface of a pad (60), wherein the method for manufacturing the hook and loop fastener (1) is characterized by performing the following steps: A preparatory step for preparing a hook and loop fastener main body (10P), the hook and loop fastener main body (10P) comprising: A resin substrate (20P) having a first surface (21) and a second surface (22) in a front-back relationship; and a plurality of engaging elements (31) provided in an element region (R) of the first surface (21) of the substrate (20P); a bonding step of bonding a flexible porous member (40P) to the second surface (22) of the substrate (20P); as well as A bending step is performed to bend the end edge portions (25A, 25B) of the substrate (20P) together with the porous component (40P) toward the second surface (22) of the substrate (20P) relative to the main body (23) of the substrate (20P) including the element region (R).

9. The method for manufacturing a hook and loop fastener according to claim 8, wherein: In the bending step, external force is applied to the end edge portions (25A, 25B) until a bending angle (θ) of the end edge portions (25A, 25B) relative to the main body portion (23) becomes 90 degrees or less.

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