BUCKLE STRAP AND MANUFACTURING METHOD FOR THE BUCKLE STRAP

Abstract

A surface zipper (1) for intimate connection with a surface of a cushion body (60), which has a resin base (20) with a first surface (21) and a second surface (22) oriented in a front-back relationship, a plurality of coupling links (31) provided in a link area (R) on the first surface (21) of the base (20), and a porous part (40) provided on the second surface (22) of the base (20) and having flexibility. The base (20) has a body (23) with the link area (R) and flanges (24A, 24B) extending from the body (23) having a shape that is curved towards the second surface (22) with respect to the body (23). The porous part (40) has a compressed section (41A, 41B) that is compressed between the body (23) and the flanges (24A, 24B).

Description

TECHNICAL AREA

[0001] The invention relates to a surface zipper (surface fastener) and a method for producing a surface zipper. BACKGROUND TECHNOLOGY

[0002] Vehicle seats, chairs, etc., generally have a covering material attached to a surface of the cushion body. As an example of a method for attaching the covering material to the surface, a method using a surface fastener is known. In such a method, the surface fastener is inserted into a mold, after which a raw material of the cushion body is injected into the mold to be foamed and solidified, and the surface fastener is thus intimately bonded to the surface of the cushion. Thereafter, the covering material is coupled to the surface fastener integrated into the cushion body to be attached to the surface of the cushion body.

[0003] Patent Document 1 discloses a surface fastener (a fastener tape) for use in the above-described attachment method. The surface fastener includes a base having a tape shape and multiple fastener elements extending from the base. The multiple fastener elements are provided on a body of the base, and the base has a flange bent toward a side of the body opposite to a side on which the multiple fastener elements are located. Since the flange is attached in a deep seated state in the cushion body, the adhesiveness of the surface fastener to the cushion body can be improved. REFERENCE LISTPATENT SPECIFICATION(S)

[0004] Patent Document 1: JP 2018-99516 A SUMMARY OF THE INVENTION PROBLEM(S) TO BE SOLVED BY THE INVENTION

[0005] However, in the conventional art disclosed in Patent Document 1, when a load is applied to the surface fastener, for example, during distribution of the surface fastener before intimate bonding with a cushioning body, the flange is easily bent back by the load. For example, when multiple surface fasteners are stacked and packaged in the stacked state, the flange of the surface fastener located below may be bent back by a load applied from the surface fastener located above the surface fastener located below.

[0006] It is an object of the invention to provide a surface fastener and a method for producing a surface fastener which is suitable for improving the adhesiveness of the surface fastener to a cushion body while maintaining a curved shape of the flange. PROBLEM-SOLVING MEANS

[0007] According to the invention, a surface fastener for intimately connecting to a surface of the cushion body comprises: a base made of a resin, the base having a first surface and a second surface in a front-to-back relationship with each other; a plurality of coupling elements provided in a link portion of the first surface of the base; and a porous member provided on the second surface of the base and having flexibility, the base comprising: a body including the link portion; and a flange extending from the body and having a shape bent toward the second surface with respect to the body, and the porous member including a compressed portion compressed between the body and the flange.

[0008] With such a configuration, the compressed portion of the porous part can bear the load acting on the surface seal, thus minimizing the impact of a load on the flange in a direction that expands the curved shape. Accordingly, the curved shape of the flange can be maintained.

[0009] Furthermore, the raw material of the cushioning material can penetrate into the porous part, thus ensuring that the flange is deeply seated in the cushioning body, even though the porous part is located between the flange and the body. This allows the surface fastener to be installed in a cushioning body without reducing the adhesion of the surface fastener, which is the original purpose of the flange. In addition, the penetration of the raw material of the cushioning material into the porous part increases the contact area between the surface fastener and the cushioning material, making it possible to improve the adhesion of the surface fastener.

[0010] Thus, the surface fastener is provided which, according to the invention, is capable of improving the adhesiveness of the surface fastener to the cushion body while maintaining the curved shape of the flange.

[0011] According to the invention, it is preferable that the porous member is provided on the second surface of the base to cover the body and the flange.

[0012] With such a configuration, the porous part has a shape bent between the body and the flange, and it is possible to provide the compressed portion appropriately.

[0013] According to the invention, wherein a direction from the first surface to the second surface in the body is defined as a predetermined direction, the porous part preferably has a bulge which projects further in the predetermined direction than the flange.

[0014] With such a configuration, it is possible to place the bulge deep in the cushion body when forming the cushion body and further improve the adhesion ability of the surface fastener.

[0015] According to the invention, it is preferable that the porous member further comprises a non-compressed portion disposed on the body, and a recess is provided between the non-compressed portion and the recess.

[0016] With such a configuration, the raw material of the cushion body flows into the recess during molding and solidifies, allowing the porous part to hold part of the cushion body. Accordingly, it is possible to further improve the adhesion of the surface fastener.

[0017] According to the invention, the porous part is preferably made of foam. With this configuration, it is easy to compress the porous part and easily form the compressed portion of the porous part by performing a bending process on the base.

[0018] According to the invention, the compressed section can be cured by welding or by an adhesive.

[0019] With this configuration, it is possible to dampen an elastic force of the compressed section and maintain the curved shape of the flange more tightly.

[0020] According to the invention, the base may have a first flange and a second flange as the flange, wherein the first flange extends from one side along a width direction of the body, the second flange extends from another side along the width direction of the body, and the porous member may have the compressed portion between the body and the first flange and the compressed portion between the body and the second flange.

[0021] With such a configuration, since the compressed portion is formed on both sides along the width direction of the body, it is possible to distribute and bear the load acting on the surface fastener. Accordingly, it is possible to appropriately maintain the respective curved shapes of the first flange and the second flange.

[0022] According to another aspect of the invention, there is provided a method for manufacturing a surface fastener for intimately bonding to a surface of the cushion body, the method comprising: preparing a fastener body, the fastener body comprising a base made of a resin and multiple fastener elements, the base having a first surface and a second surface in a front-to-back relationship with each other, the multiple fastener elements being provided in a link region on the first surface of the base; adhering a porous member to the second surface of the base, the porous member having flexibility; and bending a side edge end portion together with the porous member toward the second surface of the base, the side edge end portion being located in a region outside the link region of the base.

[0023] With such a method, it is possible to properly manufacture the surface fastener according to the above aspect of the invention.

[0024] In the other aspect of the invention, in bending, preferably an external force is applied to the side edge end portion until a bending angle of the side edge end portion with respect to the body is less than or equal to 90 degrees.

[0025] With such a method, it is possible to properly maintain the bent shape of the side edge end portion (ie, the flange) while the side edge end portion is lifted from the body by utilizing the recovery of the side edge end portion to its original state to some extent by utilizing an elastic force of the side edge end portion and / or a repulsive force of the porous part. EFFECTS OF THE INVENTION

[0026] According to the above aspects of the invention, it is possible to provide a surface fastener and a method for manufacturing a surface fastener capable of improving the adhesiveness of the surface fastener to a cushion body while maintaining the curved shape of a flange. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a surface fastener according to an exemplary embodiment of the invention. Fig. 2 is a plan view of the surface fastener according to the exemplary embodiment. Fig. 3 is a diagram for describing a method of manufacturing the surface fastener according to the exemplary embodiment, and is a cross-sectional view illustrating a state before the bending step. Fig. 4 is a diagram for describing the method of manufacturing the surface fastener according to the exemplary embodiment, and is a plan view of the state before the bending step. Fig. 5 is a diagram for describing the method of manufacturing the surface fastener according to the exemplary embodiment, and is a cross-sectional view illustrating a state after the bending step. Fig. 6 is a cross-sectional view illustrating another example of the surface fastener according to the exemplary embodiment. Fig. 7 is a diagram illustrating an example of installation of the surface fastener according to the exemplary embodiment in a molding apparatus of the cushion body. Fig. 8 is a diagram illustrating a state in which surface fasteners according to the exemplary embodiment are stacked. Fig. 9 is a partial perspective view of a surface fastener according to a modification of the exemplary embodiment. Fig. 10 is a partial perspective view of a surface fastener according to another modification of the exemplary embodiment. Fig. 11 is a diagram illustrating a state in which surface fasteners of a comparable example are stacked on each other. DESCRIPTION OF THE EMBODIMENT(S)

[0027] An exemplary embodiment of the invention will be described below with reference to the drawings.

[0028] A surface fastener 1 of the exemplary embodiment is to be intimately connected to a surface of a cushion body which is a component of a seat, a chair or the like of a vehicle, and is used to fix a covering material to the cushion body. Configuration of the surface closure 1

[0029] A configuration of the surface fastener 1 according to the exemplary embodiment will be described with reference to Fig. 1 and Fig. 2. It should be noted that Fig. 1 is a cross-sectional view taken along a line AA and along a line Fig. 2 direction indicated by arrows.

[0030] The surface fastener 1 includes a base 20 made of a resin, multiple coupling elements 31, and a porous member 40. The base 20 has a first surface 21 and a second surface 22 that are in a front-to-back relationship with each other. The multiple coupling elements 31 are provided in a link region R of the first surface 21 of the base 20. The porous member 40 is provided on the second surface 22 of the base 20 and has flexibility. Note that the base 20 and the multiple coupling elements 31 constitute a fastener body 10 integrally formed of synthetic resin or the like.

[0031] The base 20 has a body 23 containing the link portion R, and multiple flanges 24A and 24B each extending from the body 23 and each having a shape curved toward the second surface 22 with respect to the body 23.

[0032] Note that in the exemplary embodiment, the base 20 as a whole has a ribbon shape. In the following description, a length direction of the base 20 is defined as the X direction, and a width direction of the base 20 is defined as the Y direction. A direction from the first surface 21 to the second surface 22 (which corresponds to a predetermined direction of the invention) in the body 23 of the base 20 is defined as the Z direction. The X, Y, and Z directions are orthogonal to each other.

[0033] The body 23 contains the link region R, which is a region in which components including the multiple coupling elements 31 are provided. The link region R has a constant width in the Y direction and is continuous in the X direction (see Fig. 4). Further, not only the multiple coupling elements 31 but also multiple walls 32 and multiple magnetic elements 33 may be provided in the link region R.

[0034] The respective specific configurations of the coupling elements 31, the walls 32, and the magnetic elements 33 may be similar to those of the conventional art. For example, the coupling elements 31 each have a protrusion extending from the first surface 21 of the base 20 and having a hook provided at the end of the protrusion, and the multiple coupling elements 31 are provided at predetermined intervals along the X and Y directions in the link region R. The walls 32 are provided along the X direction on each of the two sides of the multiple coupling elements 31 in the Y direction. The magnetic elements 33 are each made of a synthetic resin containing a magnetic material and are provided along the X direction in each region between the coupling elements 31 and the walls 32.

[0035] Flanges 24A and 24B correspond to the flanges of the invention and are hereinafter sometimes referred to as first flange 24A and second flange 24B. The first flange 24A and second flange 24B have a similar structure to each other, except for their position relative to the body 23.

[0036] In particular, the first flange 24A extends from an end portion 231A along the Y-direction of the body 23. The base 20 of the exemplary embodiment has multiple first flanges 24A arranged at predetermined intervals along the X-direction.

[0037] The second flange 24B extends from another end portion 231B along the Y direction of the body 23. In the exemplary embodiment, the base 20 includes multiple second flanges 24B arranged at predetermined intervals along the X direction. Note that the respective positions of the multiple first flanges 24A and the respective positions of the multiple second flanges 24B along the X direction preferably differ from each other.

[0038] The flanges 24A and 24B each have a shape that is bent toward the second surface 22 of the base 20 with respect to the body 23. A bending angle θ of each of the flanges 24A and 24B is not particularly limited and is preferably 90 degrees ± 10 degrees, and more preferably less than 90 degrees. Note that the bending angle θ in the exemplary embodiment is an angle between the second surface 22 of the body 23 and the second surface 22 of each of the flanges 24A and 24B, as shown in Fig. 1 shown.

[0039] The porous member 40 may be made of any porous material that has flexibility, and examples of the porous material include a nonwoven fabric, foam, or meshed material. For example, in the exemplary embodiment, the porous member 40 is assumed to be made of urethane in foam form.

[0040] The porous member 40 is adhered to the second surface 22 of the base 20 with any adhesive. That is, the porous member 40 is fixed to the second surface 22 of the base 20 with any adhesive layer 47 positioned therebetween. The porous member 40 is provided on the second surface 22 of the base 20 to cover the body 23 and the flanges 24A and 24B. The porous member 40 has a shape that, together with the flanges 24A and 24B, is bent toward the second surface 22 of the base 20 with respect to the body 23.

[0041] Specifically, the porous member 40 includes a compressed portion 41A compressed between the body 23 and the first flange 24A, and a compressed portion 41B compressed between the body 23 and the second flange 24B. When the porous member 40, together with the flanges 24A and 24B, is bent toward the second surface 22 of the base 20 with respect to the body 23, the porous member 40 is compressed to form the compressed portions 41A and 41B. The compressed portions 41A and 41B each have a high density and a high strength compared to the non-compressed portion 43 and the bulges 42A and 42B of the porous member 40, which will be described later. It should be noted that in Fig. 2, the respective surfaces of the compressed sections 41A and 41B in the porous part 40 are each marked with a two-dot line. The compressed sections 41A and 41B can each be cured by welding or with an adhesive.

[0042] The porous member 40 has the non-compressed portion 43 disposed on the body 23 between the compressed portions 41A and 41B in the width direction (the Y direction) of the base 20 and is not compressed by the flanges 24A and 24B.

[0043] The porous member 40 further includes a protrusion 42A protruding in the Z direction from the compressed portion 41A between the body 23 and the first flange 24A, and a protrusion 42B protruding in the Z direction from the compressed portion 41B between the body 23 and the second flange 24B. In the exemplary embodiment, the bulges 42A and 42B protrude further in the Z direction than the respective flanges 24A and 24B, and also protrude further in the Z direction than the non-compressed portion 43. More specifically, the bulge 42A protrudes further in the Z direction than an end of the first flange 24A that is bent toward the second surface 22, and it also protrudes further in the Z direction than a Z-direction-facing surface of the non-compressed portion 43.The bulge 42B protrudes further in the Z direction than one end of the second flange 24B which is bent toward the second surface 22, and it also protrudes further in the Z direction than the Z-direction surface of the non-compressed portion 43.

[0044] Note that in the exemplary embodiment, the protrusions 42A and 42B each correspond to a deformed portion of the porous member 40, which is bent in a bending step of the base 20 described later. The protrusions 42A and 42B are arranged alternately in the X direction, like the flanges 24A and 24B.

[0045] The porous part 40 is provided with recesses 45 each having a shape surrounded by protrusions 42A and 42B and the non-compressed portion 43 and open in the Z direction. Fig. 2, for example, for some of multiple indentations 45, the respective areas of the indentations 45 are marked by two-dot lines.

[0046] Note that in the exemplary embodiment, since the protrusions 42A and 42B are alternately arranged along the X direction, the recesses 45 each define a space closed on both sides along directions inclined from the Y direction and located on the XY plane. In other words, the recesses 45 are open in each of the X and Y directions. Further, the recess 45 is provided between the protrusion 42A and each of the protrusions 42B located on both sides along the X direction with respect to the protrusion 42A. Likewise, the recess 45 is provided between the protrusion 42B and each of the protrusions 42A along both sides in the X direction with respect to the protrusion 42B. Method for producing the surface closure 1

[0047] A method of manufacturing the surface fastener 1 according to the exemplary embodiment will be described.

[0048] First, the closure body 10P is prepared, which corresponds to the closure body 10, before the flanges 24A and 24B are formed (see Fig. 3). Note that the fastener body 10P is provided with components including: a base 20P having a band shape and having the first surface 21 and the second surface 22 in a front-to-back relationship with each other; and the multiple coupling elements 31 provided in the link portion R of the first surface 21 of the base 20P.

[0049] Next, as in Fig. 3, a porous member 40P having a plate shape is adhered to the second surface 22 of the base 20P (an adhesion step). Note that the porous member 40P corresponds to the porous member 40 before the formation of the compressed portions 41A and 41B or the like, and has an adhesion surface 44 having a plate shape adhered to the second surface 22 of the base 20P. The porous member 40P is arranged to completely cover the second surface 22 of the base 20P, having a predetermined thickness D in the Z direction. The thickness D of the porous member 40P corresponds to a thickness of the above-described non-compressed portion 43 and is preferably greater than or equal to half of an extension length Lf of each of the flanges 24A and 24B (see, for example, Fig. 1 and Fig. 4) and less than or equal to the extension length Lf.

[0050] Subsequently, the side edge end portions 25A and 25B, which are regions outside the link region R on the base 20P in the Y direction, are each cut into a predetermined shape (cutting step). Accordingly, the respective shapes corresponding to the multiple flanges 24A and 24B are formed on the respective side edge end portions 25A and 25B of the base 20P. Furthermore, in the cutting step, the porous part 40P is cut together with the base 20P. Thus, the respective shapes corresponding to the multiple flanges 24A and 24B are formed on the porous part 40P (see Fig. 4).

[0051] Incidentally, it is optional to use a specific method in the cutting step, and it is possible, for example, to use a rotary milling machine. When using a rotary milling machine, cutting is performed by a pair of rotary milling machines while sandwiching the porous part 40P and the base 20P in the Z direction during transportation, in which the porous part 40P and the base 20P are transported along a transport direction along the X direction. During cutting, the porous part 40P is compressed by receiving a load from the rotary milling machines that has a component in a direction opposite to the transport direction. Therefore, a cut surface of the porous part 40P may be inclined with respect to the Z direction.

[0052] Next, the side edge end portions 25A and 25B of the base 20P are bent together with the porous part 40P with respect to the body 23 toward the second surface 22 of the base 20P (the bending step). At this time, as shown in Fig. 5, it is preferable to apply an external force F1 to the side edge end portions 25A and 25B until the bending angle of each of the side edge end portions 25A and 25B with respect to the body 23 is less than or equal to 90 degrees, preferably until the bending angle is 0 degrees. At this time, the bent portions of the base 20P (i.e., the one end portion 231A and the other end portion 231B of the body 23) are each bent until plastic deformation occurs. It should be noted that Fig. 5 is a cross-sectional view along the line AA, along a Fig. 2. In a state where the bending angle of each side edge end portion 25A and 25B with respect to the body 23 is 0 degrees, the side edge end portions 25A and 25B overlap with the body 23 in the Z direction, with the porous member 40P positioned in a compressed state between the body 23 and each of the side edge end portions 25A and 25B.

[0053] Thereafter, the side edge end portions 25A and 25B of the base 20P are relieved of the external force F1 (a spring-back step). At this time, the side edge end portions 25A and 25B of the base 20P rise relative to the body 23, returning to their original state to some extent due to an external force on each of the side edge end portions 25A and 25B and / or a repulsive force of the porous part 40.

[0054] Here, the bending angle θ of each of the side edge end portions 25A and 25B (ie, the flanges 24A and 24B) in a state of elevation with respect to the body 23 is preferably 90 degrees ± 10 degrees, as shown in Fig. The bending angle θ of each of the flanges 24A and 24B is preferably less than or equal to 90 degrees, but may also be greater than 90 degrees, as shown in Fig. 6 shown.

[0055] Note that the compressed portions 41A and 41B and the protrusions 42A and 42B of the porous member 40 are formed simultaneously with the raising of the side edge end portions 25A and 25B of the base 20P. Specifically, since one end portion 231A and the other end portion 231B of the body 23 are plastically deformed, the raising of the side edge end portions 25A and 25B of the base 20P can be maintained even though the side edge end portions 25A and 25B receive the repulsive force of the compressed porous member 40. The compressed portions 41A and 41B and the protrusions 42A and 42B of the porous member 40 are formed.

[0056] After the preferred bending angle θ of each of the flanges 24A and 24B is achieved by the spring-back step, a curing step of curing the pressed-together portions 41A and 41B may be performed by welding or with an adhesive.

[0057] The surface fastener 1 is thus manufactured. Multiple surface fasteners 1 manufactured in this way can be packed and shipped in a stacked state.

[0058] Note that, although a case where one surface fastener 1 was manufactured was described above, multiple surface fasteners 1 may be manufactured simultaneously. For example, a composite material having a large width, corresponding to a state where multiple fastener bodies 10P are arranged in the Y direction, may be prepared (a preparation step), and the porous part 40P having a large width may be adhered to the composite material (an adhesion step). Thereafter, when the composite material is cut together with the porous part 40P having a large width, the side edge end portions 25A and 25B of multiple fastener bodies 10P may each be cut into a predetermined shape while cutting the composite material into multiple fastener bodies 10P (a cutting step).

[0059] Furthermore, a step of cutting a part of the surface fastener 1 together with the porous part 40 and the base 20 may be performed before or after the bending step. For example, to improve the flexibility of the surface fastener 1, the surface fastener 1 may be partially cut from both sides in the Y direction to form a narrow section. Installation of the surface closure 1

[0060] A method for installing the surface fastener 1 in the cushion body will be briefly described.

[0061] First, as in Fig. 7, the surface fastener 1 is placed on a base portion 52 located in a molding jig 51 of the cushion body. Note that a magnet 53, such as a neodymium magnet, is mounted inside the base portion 52. The magnet 53 magnetically attracts the magnetic elements 33 of the surface fastener 1 and secures a position of the surface fastener 1. At this time, a bending angle θ of each of the flanges 24A and 24B that is less than or equal to 90 degrees makes it easier for an operator to check the base portion 52, thus improving operability.

[0062] Subsequently, a foam resin, which is a raw material of the cushion body, is injected into the molding device 51. When filling the periphery of the surface fastener 1 with the foam resin, the foam resin is received by the recesses 45 located between the protrusions 42A and 42B and the non-compressed portion 43 of the porous part 40, and as the recesses 45 are filled with the foam resin, the foam resin penetrates into the porous part 40. Note that the protrusions 42A and 42B are alternately arranged in the X direction, and therefore, the flow of the foam resin is hardly stopped and the foam resin easily spreads over an entire surface of the surface fastener 1.

[0063] At this time, the walls 32 of the surface closure 1 prevent the foam resin from penetrating into the link area R.

[0064] The foam resin injected into the molding device 51 foams and solidifies to form a cushioning body 60. At this time, the surface fastener 1 is intimately bonded to the surface of the cushioning body 60. With the surface fastener 1 intimately bonded to the surface of the cushioning body 60, the flanges 24A and 24B and the porous member 40 are arranged inside the cushioning body 60. Effects of the exemplary embodiment

[0065] As described above, the surface fastener 1 according to the exemplary embodiment includes: the base 20, the first surface 21, and the second surface 22, which are in a front-to-back relationship with each other; the multiple coupling elements 31 provided in a link portion R on the first surface 21 of the base 20; and the porous member 40, which is provided on the second surface 22 of the base 20 and has flexibility. The base 20 includes: the body 23 including the link portion R; and the flanges 24A and 24B each extending from the body 23 and each having a shape bent toward the second surface 22 with respect to the body 23. The porous member 40 includes the compressed portions 41A and 41B, each compressed between the body 23 and the corresponding respective flanges 24A and 24B.

[0066] In the surface fastener 1 of the exemplary embodiment as described above, it is possible to obtain the bent shape of the flanges 24A and 24B by the compressed portions 41A and 41B of the porous member 40.

[0067] Here, in particular, to describe the effect of the exemplary embodiment, a state in which the surface fasteners 1 of the exemplary embodiment are stacked (see Fig. 8), and a state in which surface fasteners 100 of a comparative example are stacked ( Fig. 11) are exemplified. Note that the surface fasteners 100 of the comparative example each have a configuration in which the porous member 40 is removed from the surface fastener 1 of the exemplary embodiment. In the comparative example, the same reference numerals as those of the exemplary embodiment are used for components similar to those of the exemplary embodiment.

[0068] As in Fig. 11, in the comparative example, it happens at times that the surface fastener 100 on an upper side penetrates into a space surrounded by the body 23 and the flanges 24A and 24B of the surface fastener 100 on a lower side, and causes a load F2, which is an outward load in the Y direction to the flanges 24A and 24B. The flanges 24A and 24B, on which the load F2 acts, occasionally rotate outward in the Y direction and are bent back. It should be noted that in Fig. 11 shows an example in which the outwardly acting load F2 acts in the Y direction on the first flange 24A and the first flange 24A is bent back.

[0069] In contrast, as in Fig. 8, in the exemplary embodiment, it is possible for the compressed portions 41A and 41B of the porous part 40 of the surface fastener 1 on a lower side to support the surface fastener 1 on an upper side. Accordingly, the surface fastener 1 on the upper side hardly intrudes into a space surrounded by the body 23 and the flanges 24A and 24B of the surface fastener 1 on the lower side, and a load in a direction to expand the bend (outward in the Y direction) hardly acts on the flanges 24A and 24B of the surface fastener 1 on the lower side. As a result, it is possible to obtain the bent shape of each of the flanges 24A and 24B of the surface fastener 1 on the lower side.

[0070] In the exemplary embodiment, it is also possible to obtain the bent shape of each of the flanges 24A and 24B when the bending angle θ of each of the flanges 24A and 24B is greater than 90 degrees (see, for example, Fig. 6).

[0071] For example, in the comparative example, when the bending angle θ of each of the flanges 24A and 24B is greater than 90 degrees, a downward load can act on the flanges 24A and 24B of the surface fastener 1 on the lower side of the surface fastener 1 on the upper side, and the downward load can be converted into a load acting in the direction of expanding the bending of the flanges 24A and 24B (outward in the Y direction).

[0072] In contrast, in the exemplary embodiment, it is possible for the compressed portions 41A and 41B of the porous part 40 of the surface fastener 1 on the lower side to receive the load from the surface fastener 1 on the upper side and prevent the downward load from acting on the flanges 24A and 24B. Accordingly, the curved shape of each of the flanges 24A and 24B can be obtained.

[0073] Furthermore, since a raw material of the cushioning material is penetrable into the porous member 40, each of the flanges 24A and 24B is disposed in a deep seated state in the cushioning body 60 even though the porous member 40 is located between the body 23 and each of the flanges 24A and 24B. This makes it possible to achieve installation of the surface fastener 1 in the cushioning body 60 without impairing the adhesiveness of the surface fastener, which is an original function of the flanges 24A and 24B. In addition, the penetration of the raw material of the cushioning body 60 into the porous member 40 increases a contact area between the porous member 40 and the cushioning body 60, making it possible to improve the adhesiveness of the surface fastener 1.

[0074] Accordingly, the exemplary embodiment provides the surface fastener 1 in which the adhesiveness to the cushion body 60 can be improved while maintaining the curved shape of each of the flanges 24A and 24B.

[0075] In the exemplary embodiment, the porous member 40 is provided on the second surface 22 of the base 20 to cover the body 23 and the flanges 24A and 24B. With such a configuration, the porous member 40 has a shape bent between the body 23 and each of the flanges 24A and 24B, and it is possible to properly provide the compressed portions 41A and 41B.

[0076] In the exemplary embodiment, wherein the direction from the first surface 21 to the second surface 22 in the body 23 is defined as the predetermined direction (the Z direction), the porous member 40 further includes the bulges 42A and 42B, each of which projects further in the predetermined direction than each of the corresponding flanges 24A and 24B.

[0077] With such a configuration, it is possible to provide the protrusions 42A and 42B deep in the cushion body 60 when the cushion body 60 is molded and to further improve the adhesiveness of the surface fastener 1.

[0078] In the exemplary embodiment, the porous member 40 further includes a non-compressed portion 43 disposed on the body 23, and the recesses 45 are provided between the non-compressed portion 43 and the recesses 42A and 42B.

[0079] With such a configuration, when the cushion body 60 is formed, the raw material of the cushion body 60 flows into the recesses 45 and solidifies, allowing the porous part 40 to hold a part of the cushion body 60. Accordingly, the adhesiveness of the surface fastener 1 can be further improved.

[0080] In the exemplary embodiment, the porous member 40 is made of foam. With this configuration, 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 performing a bending process on the base 20P.

[0081] In the exemplary embodiment, the compressed portions 41A and 41B are each bonded by welding or an adhesive. With this configuration, it is possible to dampen the elastic force of each of the compressed portions 41A and 41B and more accurately maintain the curved shapes of each of the flanges 24A and 24B.

[0082] In the exemplary embodiment, the base 20 has a first flange 24A extending from one side along a width direction of the body 23 and a second flange 24B extending from another side along the width direction of the body 23, and the porous member 40 has a compressed portion 41A located between the body 23 and the first flange 24A and the compressed portion 41B located between the body 23 and the second flange 24B.

[0083] With such a configuration, since the compressed portions 41A and 41B are provided on both sides along the width direction of the body 23, it is possible for the compressed portions 41A and 41B to distribute and support a load acting on the surface fastener 1. Therefore, the respective curved shapes of the first flange 24A and the second flange 24B can be properly obtained.

[0084] The method for manufacturing the surface fastener 1 according to the exemplary embodiment includes, as described above, the preparation step of preparing the fastener body 10P including the base 20P and the multiple coupling elements 31; the adhesion step of adhering the porous part 40P having flexibility to the second surface 22 of the base 20P; and the bending step of bending the side edge end portions 25A and 25B of the base 20P together with the porous part 40P with respect to the body 23 of the base 20P toward the second surface 22 of the base 20P.

[0085] With such a method it is possible to produce the surface closure 1 described above in a suitable manner.

[0086] In the exemplary embodiment, in the bending step, the external force F1 acts on the side edge end portions 25A and 25B until the bending angle of each of the side edge end portions 25A and 25B with respect to the body 23 is less than or equal to 90 degrees. With such a method, it is possible to properly maintain the bent shape of each of the side edge end portions 25A and 25B (i.e., the flanges 24A and 24B) during the lifting of the side edge end portions 25A and 25B from the body 23 by utilizing the elastic force of each of the side edge end portions 25A and 25B and / or the repulsive force of the porous member 40P to restore the side edge end portions 25A and 25B to their original states to some extent.

[0087] In the exemplary embodiment, the Z-direction thickness D of each of the compressed portions 41A and 41B before the bending step is preferably greater than or equal to half the extension length Lf of each of the flanges 24A and 24B. With this configuration, it is possible to form the compressed portions 41A and 41B each increased in density to have appropriate strength.

[0088] Further, in the exemplary embodiment, the Z-direction thickness D of each of the compressed portions 41A and 41B before the bending step is preferably less than or equal to the extension length Lf of each of the flanges 24A and 24B. With this configuration, it is possible to form the bulges 42A and 42B by bending the porous part 40 in the bending step. Modifications

[0089] In the exemplary embodiment described above, modifications may be made to obtain the curved shape of each of the flanges 24A and 24B.

[0090] For example, as in Fig. 9, a bending line of the first flange 24A (or the second flange 24B) may be curved in the Y direction. In this case, a groove may be provided along the bending line of the flanges 24A or 24B on the second surface 22 of the base 20.

[0091] Furthermore, as in Fig. 10, a V-shaped groove 26 along the Z direction may be provided at a corner of the curved shape of the first flange 24A (or the second flange 24B). It is possible to form such a V-shaped groove 26, for example, by pressing a wedge-shaped tool against the corner.

[0092] In the exemplary embodiment described above, shapes, bending positions, etc. of the flanges 24A and 24B are variable.

[0093] For example, in the above-described embodiment, the shapes corresponding to the multiple flanges 24A and 24B are formed by cutting the side edge end portions 25A and 25B of the base 20P into predetermined shapes; however, such a cutting step need not be performed, or a cutting step of cutting the side edge end portions 25A and 25B into any other shape may be performed. That is, the flanges 24A and 24B may be at least the side edge end portions 25A and 25B of the base 20P that are bent with respect to the body 23.

[0094] Furthermore, in the above-described embodiment, the base 20 has both the first flange 24A and the second flange 24B, but may also have either the first flange 24A or the second flange 24B. For example, in the bending method of the above-described exemplary embodiment, one of the side edge end portions 25A and 25B of the base 20P may be bent, and the other may not be bent. Furthermore, one of the side edge end portions 25A and 25B of the base 20P may be determined for bending depending on the shape of the cushion body 60 to be attached.

[0095] In the exemplary embodiment described above, the shape or extent of the porous part 40 is changeable.

[0096] For example, in the exemplary embodiment described above, the porous part 40 before bending (i.e., the porous part 40P) has a flat plate shape, but it may also have any other shape. Here, the thickness D of the porous part 40P before compression may be a thickness at least suitable for forming each of the compressed portions 41A and 41B between the body 23 and the corresponding flange 24A or 24B.

[0097] Further, in the exemplary embodiment described above, the porous member 40 has the protrusions 42A and 42B, but need not have the protrusions 42A and 42B.

[0098] Furthermore, in the exemplary embodiment described above, the porous part 40 does not have to cover the entire area of ​​the second surface 22 of the base 20, and a partial area of ​​the second surface 22 of the base 20 may be open without being covered by the porous part 40. EXPLANATION OF REFERENCE SYMBOLS

[0099] 1: Surface Zipper, 10, 10P: Fastener Body, 20, 20P: Base, 21: First Face, 22: Second Face, 23: Body, 231A: One End Portion, 231B: Another End Portion, 24A: First Flange (Flange), 24B: Second Flange (Flange), 25A, 25B: Side Edge End Portions, 26: V-Shaped Groove, 31: Coupling Element, 32: Wall, 33: Magnetic Element, 40, 40P: Porous Part, 41A, 41B: Compressed Portions, 42A, 42B: Protrusions, 43: Non-Compressed Portion, 44: Adhesive Surface, 45: Indentation, 47: Adhesive Layer, 51: Molding Die, 52: Base Portion, 53: Magnet, 60: Cushion body, R: Link area QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 2018-99516 A

[0004]

Claims

[1] Surface zipper (1) for intimate connection with a surface of a cushion body (60), the a base (20) made of a resin having a first surface (21) and a second surface (22) which are in a front-to-back relationship with each other, a plurality of coupling elements (31) provided in a link region (R) on the first surface (21) of the base (20) and a porous part (40) provided on the second surface (22) of the base (20) and having flexibility, wherein the base (20) a body (23) with the limb area (R) and flanges (24A, 24B) extending from the body (23) having a shape which is curved towards the second surface (22) with respect to the body (23), and the porous member (40) has a compressed portion (41A, 41B) compressed between the body (23) and the flanges (24A, 24B). [2] A surface slide fastener according to claim 1, wherein the porous member (40) is provided on the second surface (22) of the base (20) to cover the base (20) and the flanges (24A, 24B). [3] A surface slide fastener according to claim 1, wherein, when a direction from the first surface (21) to the second surface (22) in the body (20) is defined as a predetermined direction, the porous member (40) further has a bulge (42A, 42B) projecting further in the predetermined direction than the flanges (24A, 24B). [4] Surface zipper according to claim 3, wherein the porous member (40) further comprises a non-compressed portion (43) arranged on the body (23) and a recess (45) provided between the bulge (42A, 42B) and the non-compressed portion (43). [5] A surface zipper according to claim 1, wherein the porous member (40) is made of foam. [6] A surface slide fastener according to claim 1, wherein the compressed portion (41A, 41B) is hardened by welding or by an adhesive. [7] Surface zipper according to claim 1, wherein the base (20) has a first flange (24A) and a second flange (24B) as a flange (24A, 24B), wherein the first flange (24A) extends from one side along the width direction of the body (23) and the second flange (24B) extends from another side along the width direction of the body (23), and the porous member (40) has the portion (41A) compressed between the body (23) and the first flange (24A) and the portion (41B) compressed between the body (23) and the second flange (24B). [8] A method for producing the surface zipper (1) for intimate connection to a surface of a cushion body (60), the method comprising: Preparing a closure body (10P), the closure body (10P) comprising a resin base (20P) and a plurality of coupling elements (31), the base (20P) having a first surface (21) and a second surface (22) which are in a front-to-back relationship with each other, and the plurality of coupling elements being provided in a link region (R) on the first surface (21) of the base (20P), Attaching a porous part (40P) having flexibility to the second surface (22) of the base (20P), and Bending a side edge end portion (25A, 25B) of the base (20P) together with the porous part (40P) toward the second surface (22) of the base (20P) with respect to a body (23) of the base (20P), the body including the link region (R). [9] A method for manufacturing the surface slide fastener (1) according to claim 8, wherein, in bending, an external force is applied to the side edge end portion (25A, 25B) until a bending angle (θ) of the side edge end portion (25A, 25B) with respect to the body (23) is less than or equal to 90 degrees.

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