JPH0779811A - Face to face engagement fastener member and its manufacture - Google Patents

Abstract

PURPOSE: To provide an opposed surface engaging fastener member by which a base part can be fixed to an object surface under strong adhesive strength through an adhesive and a pressure sensitive adhesive double coated tape. CONSTITUTION: This opposed surface engaging fastener member 10 has a base part 12 and plural headed projecting pieces 14 erected on the base part 12. The respective headed projecting pieces 14 have a leg part 16 projecting in an almost erect shape from the base part 12 and a head part 18 connected to the tail end of the leg part 16. A metallic layer is formed on the reverse 26 of the base part 12 by metallic foil 28. The metallic foil 28 is integrally connected to the base part 12 in a casing mold to mold the base part 12 in a molding process of the opposed surface engaging fastener member 10. The metallic foil 28 increases adhesive strength of an adhesive and a pressure sensitive adhesive double coated tape when the adhesive or the pressure sensitive adhesive double coated tape is stuck on the reverse 26 of the base part 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facing engagement fastener member. Further, the present invention relates to a method of manufacturing a facing engagement fastener member.

[0002]

2. Description of the Related Art Face-to-face engaging fastener members having a plurality of headed protrusions standing on the main surface of a base are known to have various structures. For example, there is one provided with a base made of cloth and a headed stem made of a plurality of resin monofilaments planted in the base. Further, a face-to-face engaging fastener member formed by integrally molding a base portion and a plurality of headed stems from a resin material is known. These face-to-face engaging fastener members may be used as a hermaphroditic fastener by combining those having the same shape, or may be used in combination with another female fastener member that can be engaged with each other.

FIG. 6 shows an example of a conventional fastener composed of a combination of face-to-face engaging fastener members having the same shape. The pair of face-to-face engaging fastener members 1 include a base portion 2 and a plurality of headed protrusions 3 that are erected on the base portion 2 with a predetermined spacing. Each headed stem 3 is provided with a leg portion 5 that projects from the main surface 4 of the base portion 2 in a substantially upright state, and a head portion 6 that is connected to an end of the leg portion 5. When the two fastener members 1 are engaged with each other, the heads 6 of the headed stems 3 are opposed to each other and the base portions 2 are
Are arranged substantially in parallel (FIG. 6 (a)). In that state, when a predetermined pressure is applied to each base portion 2 in the mutually approaching direction, the head 6 of the headed stem 3 of one fastener member 1 has its top surface 7 at the headed protrusion of the other fastener member 1. Top surface 7 of head 6 of child 3
Slide along, and thus the legs 5 of both headed stems 3
While elastically bending, the other end of the fastener member 1 of the other fastener member 1 enters between the adjacent leg portions 5 (see FIG. 6).
(B)). In this state, the plurality of headed protrusions 3 of the one fastener member 1 are engaged with the bottom surface 8 of the head 6 of the fastener member 1 on the bottom surface 8 of the head 6 of each of the headed protrusions 3 of the other fastener member 1. To meet. In this way, the pair of face-to-face engaging fastener members 1
Are attached to each other. The two fastener members 1 attached to each other apply a predetermined pulling force to each base portion 2 in the separating direction to elastically bend the leg portions 5 of the headed protrusions 3 of both base portions 8 and the bottom surfaces 8 of each other. When the head 6 is disengaged against the engagement of the above, it is pulled out.

Face-to-face engaging fastener members made of an integrally molded resin material are generally adhesives, pressure-sensitive double-sided adhesive tapes,
The base is fixed to the surface of the object by fixing means such as bolts and clips. In particular, a method of applying an adhesive to the surface opposite to the main surface of the base (that is, the back surface) or applying a pressure-sensitive double-sided adhesive tape in order to easily and quickly perform the fixing operation to the object surface. Is being carried out in an advantageous manner.

[0005]

In order to obtain a strong adhesive force when an adhesive is applied to the back surface of the base portion of a surface-engaging fastener member or a pressure-sensitive double-sided adhesive tape is applied,
Generally, the back surface of the base is subjected to surface treatment such as primer treatment in advance. Surface-treating the bases of a large number of face-to-face fastener members increases the working time and increases the manufacturing cost. Further, it is difficult to repeatedly apply the primer to the bases of the many face-to-face fastener members with a uniform thickness, and as a result, there arises a problem that a uniform fixing function cannot be given to the many face-to-face fastener members. In particular,
When the base is made of a highly adhesive polymer material such as nylon or polyacetal, the adhesion may not be sufficiently improved even if a primer is applied. Thus, fixing the face-to-face engaging fastener member to the surface of the object via the adhesive while the improvement of the adhesiveness is insufficient, not only the desired initial adhesive strength of the adhesive cannot be obtained, but also the high-temperature environment, for example. When placed underneath, the adhesive strength of the adhesive significantly deteriorates over time,
There is a problem that the base part is easily peeled off from the surface of the object and the fastener function cannot be exhibited.

An object of the present invention is to fix a base portion to an object surface with a strong adhesive strength via an adhesive or a pressure-sensitive double-sided adhesive tape in a face-to-face engaging fastener member having a plurality of headed stems. An object of the present invention is to provide a face-to-face engaging fastener member that can provide a large number of face-to-face engaging fastener members with an even fixing function. Another object of the present invention is to provide a method for manufacturing such a surface-engaging fastener member.

[0007]

In order to achieve the above object, the present invention provides a base having a main surface and a back surface opposite to the main surface, a leg protruding from the main surface of the base, and an end of the leg. In a face-to-face engaging fastener member comprising a plurality of headed protrusions each of which has a head portion connected to the base portion and is erected on the base portion in a predetermined spaced arrangement, a metal layer is formed on the back surface of the base portion. A characteristic face-to-face engaging fastener member is provided.

In this face-to-face engaging fastener member, the metal layer may be made of a metal foil integrally incorporated in the base portion. Further, the surface of the metal layer can be surface-treated. In this case, the surface treatment can include anodizing treatment. Further, the metal layer may be made of aluminum.
Furthermore, the base and the legs and heads of a plurality of headed stems are integrally formed by an injection molding process using a destructively detachable leg mold, and a metal layer is formed on the back surface of the base. Are preferably formed.

The present invention further includes a base portion having a main surface and a back surface opposite to the main surface, a leg portion projecting from the main surface of the base portion, and a head portion connected to an end of the leg portion. A method for manufacturing a face-to-face engaging fastener member comprising a plurality of headed protrusions standing upright with a predetermined spacing, comprising: a) a permanent base mold having a space for molding a base; , A destructible detachable leg mold with multiple spaces for molding the headed stem legs, and multiple spaces for molding the headed stem's head Prepare a permanent mold for the head, b) place a metal foil in the position corresponding to the back surface of the space for molding the base of the base mold, and c) space and legs for molding the base. While connecting the plurality of spaces for molding the part so that the fluid can flow,
A destructively detachable leg mold is fixed adjacent to the permanent base mold, and a plurality of spaces for molding the legs and a plurality of spaces for molding the head are provided. A permanent head mold is fixed adjacent to the destructively detachable leg mold while connecting so as to allow fluid flow, and d) a head mold, a leg mold, and Through the introduction passage provided in any one of the base molds, the molten polymer material,
It is poured into each space of the head mold, the leg mold and the base mold, and e) In the head mold, the leg mold and the base mold, a metal foil of the polymer material Forming a face-to-face engaging fastener member fixed to the back surface side, f) removing the base mold and the head-type mold from the leg mold and the formed face-to-face engaging fastener member, and g) the formed face-to-face engaging member. Disclosed is a method including destructively detaching a leg mold from a combined fastener member.

In the above method, step g) may include the step of dissolving and removing the destructively detachable leg mold with a solvent. In this case, the solvent may consist of water.

According to another aspect of the present invention, a base having a main surface and a back surface opposite to the main surface, a leg protruding from the main surface of the base, and a head connected to an end of the leg are respectively provided. A face-to-face engaging fastener member having a plurality of headed protrusions standing upright on the base at a predetermined distance to provide for: a) For a permanent base having a space for molding the base. A mold and a destructible detachable leg mold with multiple spaces for molding the legs of the headed stem, and multiple spaces for molding the head of the headed stem. And a permanent head mold provided with it, b) a space for molding the base of the base mold, a metal foil is arranged at a position corresponding to the back surface, and c) a space for molding the base. While connecting a plurality of spaces for molding the legs and the fluid so that the fluid can flow,
A destructively detachable leg mold is fixed adjacent to the permanent base mold, and a plurality of spaces for molding the legs and a plurality of spaces for molding the head are provided. A permanent head mold is fixed adjacent to the destructively detachable leg mold while connecting so as to allow fluid flow, and d) a head mold, a leg mold, and Through the introduction passage provided in any one of the base molds, the molten polymer material,
It is poured into each space of the head mold, the leg mold and the base mold, and e) In the head mold, the leg mold and the base mold, a metal foil is added to the base part from the polymer material. Forming a face-to-face engaging fastener member fixed to the back surface side, f) removing the base mold and the head-type mold from the leg mold and the formed face-to-face engaging fastener member, and g) the formed face-to-face engaging member. A face-to-face engaging fastener member is provided which is manufactured by a method including steps for destructively detaching a leg mold from the compound fastener member.

[0012]

[Function] The metal layer formed on the back surface of the base increases the adhesive force of the adhesive or the pressure-sensitive double-sided adhesive tape when the adhesive is applied to the back surface or the pressure-sensitive double-sided adhesive tape is attached. . Therefore, irrespective of the type of polymer material of the face-to-face engaging fastener member, strong adhesive strength is imparted to the face-to-face engaging fastener member in which the adhesive or the pressure-sensitive double-sided adhesive tape is attached to the back surface of the base. Further, unlike the surface treatment, the metal layer can be formed during the molding process of the facing engaging fastener member, so that the adhesiveness of the base portion of a large number of facing engaging fastener members can be ensured with good reproducibility. Can be improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail with reference to the preferred embodiments shown in the accompanying drawings. In each drawing, the same or similar components are given common reference numerals. 1 and 2 illustrate a face-to-face fastener member 10 according to an embodiment of the present invention. The face-to-face engaging fastener member 10 is provided with a substantially flat plate-shaped base portion 12 and a plurality of headed protrusions 14 provided upright on the base portion 12 at a predetermined distance. Each headed stem 14 has a leg 16 that projects from the base 12 in a substantially upright state, and a head 18 that is formed at the end of the leg 16 with a contour that bulges from the outer surface of the leg 16. Equipped with.
The leg portion 16 is connected to the main surface 20 of the base portion 12 by the base end 2.
2 and a terminus 24 connected to the head 18.

A metal layer is formed by a metal foil 28 on the back surface 26 of the base portion 12 of the facing engaging fastener member 10. The metal foil 28 is, for example, the facing engagement fastener member 10
In the molding step (1), the base 12 is integrally incorporated and fixed in a mold for molding the base 12. The metal foil 28 increases the adhesive force of the adhesive or the pressure-sensitive double-sided adhesive tape when the adhesive or the pressure-sensitive double-sided adhesive tape is attached to the back surface 26 of the base 12.

The face-to-face engaging fastener member according to the present invention is
It can be formed from a variety of materials. For example, in the above embodiment, the metal foil 28 is preferably formed of aluminum, aluminum alloy, copper, copper alloy, iron, or iron alloy. In addition, in order to improve the adhesiveness of the adhesive and the adhesion of the base 12 to the polymer material, the metal foil 28
The surface of the can be subjected to a surface treatment. As the surface treatment, for example, isocyanate, silane coupling agent,
Aluminum-based coupling agent, or primer treatment to apply a primer containing titanium-based coupling agent, chemical conversion treatment to form a phosphate coating or chromate coating, anodizing treatment to form an oxide coating such as alumite,
Alternatively, roughening treatment such as sandblasting can be adopted.

In the above embodiment, the base portion 12 and the headed stem 14 are made of a polymer material such as polyamide resin, polyester resin, polypropylene resin, polyethylene resin, polyacetal resin or the like. In particular, polyamide resin is a preferable material because it is excellent in heat resistance, mechanical strength, and injection molding characteristics. The headed stem 14 may be made of a polymer material different from that of the base 12. In particular, the leg portion 16 of the headed stem 14 has the base portion 12 in order to improve durability.
And the head 18 may be made of a different high strength material. In addition, the base 12 and the headed stem 14 have a bending elastic modulus of 1000 to 1000 measured by ASTM test method D790.
It is preferably formed from a material in the range of 100,000 kgf / cm ² . Furthermore, as is well known,
The elastic modulus of the base portion 12 and the headed stem 14 can also be appropriately modified or altered by adding a plasticizer or rubber, or by adding carbon fiber or glass fiber as a reinforcing material.

The face-to-face engaging fastener member according to the present invention is
It can have any size and shape. For example, in the above-described embodiment, the base 12 can be formed in various sizes and shapes such as a circular shape and a rectangular shape, which are capable of fixedly holding a plurality of headed stems 14. Also, a metal layer (metal foil 28)
May be formed not only on the entire back surface 26 of the base 12 (FIG. 1) but also on a part of the back surface 26 as shown in FIG. The thickness of the metal layer is preferably in the range of 1 to 50 μm. The thickness of the base 12 including the metal layer is
It is preferably in the range of 0.5 to 5.0 mm. Further, although not shown, instead of forming a metal layer on the back surface 26 of the base 12, the back surface of the base made of a polymer material is directly roughened by a mechanical treatment such as sandblasting to improve the adhesiveness of the back surface. It can be improved.

The leg portion 16 of the headed stem 14 includes a cylinder, a prism,
It can have various shapes such as a truncated cone, and a plurality of heads 18 can be provided. As shown in FIG. 3, the leg 16 at the proximal end 22 and the major surface 20 of the base 12
A corner portion 30 having a curvature for reducing stress concentration when the headed stem 14 is flexed may be provided in the connection region with. The head portion 18 can have various shapes such as a hemispherical shape, a spherical shape, a cone shape, and a cap shape. For example, in a headed stem 14 having a cylindrical leg 16 and a hemispherical head 18, the leg 16
The diameter of is preferably in the range of 20 to 70% of the diameter of the head portion 18 in order to obtain sufficient engagement holding force with the fastener member of the engagement partner. Also, the outer peripheral edge 32 of the head 18
Is preferably formed by eliminating the acute-angled portion in order to reduce the rubbing sound during mutual engagement with the head of the mating headed stem (see FIG. 3). Furthermore, in order to reduce the pressure-bonding force required for engagement, the head 18 may be provided with a recess or a notch.

The face-to-face engaging fastener member according to the present invention comprises
It can be formed by various methods. In order to easily form a headed stem group having a special shape, the base and the headed stem are integrally formed by an injection molding process using a destructively detachable leg mold. The method is advantageous. This method will be described below with reference to FIG.

As shown in FIG. 4A, a base metal mold 1 for molding the base 12 of the face-to-face engaging fastener member 10.
00, a leg mold 102 for molding the leg 16 of the headed stem 14, and a head mold 104 for molding the head 18 of the headed stem 14. Base mold 100
Is a permanent mold that can be detached from the molded face-to-face engaging fastener member 10 without breaking and includes a mold space 106 corresponding to the base 12. The leg mold 102 is
The mold is destructively detached from the molded face-to-face engaging fastener member 10 as described later, and includes a plurality of mold spaces 108 corresponding to the leg portions 16. Head mold 10
Reference numeral 4 denotes a permanent mold that is detached from the molded face-to-face engaging fastener member 10 without breaking, and has a mold space 110 corresponding to the head portion 18. Each mold space 106,
108 and 110 are the base 12, the leg 16, and the
The head 18 can have various contours depending on the desired shape.

The leg mold 102 has sufficient durability that it can function as a core in an injection molding process for molding the facing engagement fastener member 10, and after molding the facing engagement fastener member 10, It can be destructively detached from the facing engagement fastener member 10 by various means. For example, the leg mold 102 damages the face-to-face engaging fastener member 10 by various mechanical or chemical means such as dissolution, melting, destruction by a solvent such as water or alcohol, crushing by ultrasonic waves, cutting, etc. Without being detached from the periphery of the leg portion 16. In the preferred embodiment, the leg mold 102 is formed from a water soluble material. In this case, the leg mold 102 is removed from the facing engagement fastener member 10 by immersing it in water or warm water and applying vibration. Water-soluble materials applicable to the present invention include, for example, European Patent Application No. 314,156 and US Pat. No. 4,990,14.
No. 6, U.S. Pat. No. 4,870,148.
The leg mold 102 can be molded into a desired shape by a known injection molding process.

As shown in FIG. 4 (b), the base mold 10 is used.
In the mold space 106 of 0, the facing engagement fastener member 10
At the bottom of the space corresponding to the back surface 26 of the base 12 of the metal foil 28
To place. Next, the leg mold 102 is fixedly arranged between the base mold 100 and the head mold 104.
At this time, the mold space 106 of the base mold 100, the plurality of mold spaces 108 of the leg mold 102, and the head mold 104.
The plurality of mold spaces 110 are connected to each other so that the fluid can flow. In this state, for example, the head mold 10
The molten polymer material is poured into the mold space 110 through the introduction passage 112 provided in No. 4. The introduction path for injecting the molten material is the mold space 106 or the mold space 108.
Base mold 100 or leg mold 10 so as to communicate with the
It can also be provided in 2.

The molten material injected into the mold space 110 of the head mold 104 fills the mold space 106 and fills the base portion 12.
And then a plurality of mold spaces 1 of the leg mold 102.
08 to fill the plurality of legs 16 and to fill the plurality of mold spaces 110 of the head mold 104 to form the plurality of heads 18 (see FIG. 4B). After that, the molten polymer material is solidified, so that the face-to-face engaging fastener member 10 in which the metal foil 28 is connected to the back surface side of the base portion 12 is integrally molded.

When the molding of the face-to-face engaging fastener member 10 is completed, the leg mold 102 is left and the base mold 100 is left.
And the head mold 104 are removed from the facing engagement fastener member 10 (see FIG. 4C). Furthermore, the headed stem 1 of the face-to-face engaging fastener member 10 is formed by the various methods described above.
The leg mold 102 is destructively detached from the periphery of the leg 16 of No. 4. In this way, the facing engagement fastener member 10 shown in FIG. 1 is completed.

In the above-mentioned forming process, in order to integrally and firmly connect the metal foil 28 to the base 12, the metal foil 28
For example, as shown in FIG. 5, it is desirable to include a plurality of protrusions 34 formed in advance by press molding. Each of the protrusions 34 penetrates into the layer of the polymer material of the base portion 12, so that the metal foil 28 is firmly and fixedly supported on the back surface side of the base portion 12.

In order to clarify the effect of improving the adhesiveness of the facing engaging fastener member according to the present invention, the inventor conducted the following experiment. [Experiment] Evaluation of adhesive strength A pressure-sensitive double-sided adhesive tape was attached to the back surface of a face-to-face engaging fastener member integrally molded by an injection molding process using a destructively detachable leg mold, and a primer treatment was applied. The face-to-face engaging fastener member is fixed to the polyester film via a pressure-sensitive double-sided adhesive tape. After the pressure-sensitive double-sided pressure-sensitive adhesive tape exhibits normal adhesive strength, a polyester film is pulled at a speed of 300 mm using an autograph (trade name: Model AGS-100, Shimadzu Corporation) tester.
It is peeled off in a 180 ° peel direction at a speed of / min, and the tensile force required to cause the destruction of the adhesive system is measured, and the state of destruction is comparatively evaluated.

As a comparative example of the above-mentioned experiment, the above-mentioned experiment is a face-to-face fastener member (No. 1) integrally molded from 6 nylon, which is not surface-treated on the back surface of the base,
Also, as an example of the present invention, the back surface of the base is 50 μm.
Face-to-face fasteners made of 6 nylon with No. 2 aluminum foil connected (No. 2) and face-fastener fasteners made of 6 Nylon with No. 50 μm aluminum foil anodized on the back side of the base (No. .3) was carried out. In this case, both face-to-face engaging fastener members are 2
A square base of 5.4 mm × 25.4 mm with 220 headed stems standing upright in a predetermined arrangement was used. Further, as the material of the face-to-face engaging fastener member, a bending elastic modulus of 4000
A polyamide resin of 0 kg / cm ² was used. Furthermore, acrylic foam tape # 4211 manufactured by Sumitomo 3M Limited was used as the pressure-sensitive double-sided adhesive tape. The evaluation results are shown in the table below.

[0028]

[Table 1]

[0029]

As is apparent from the above description, according to the present invention, in a face-to-face engaging fastener member having a plurality of headed protrusions, a metal layer is formed on the back surface of the base to improve the adhesiveness of the back surface. Because of the improved structure, even with a face-to-face engaging fastener member formed of a difficult-to-adhesive polymer material, the base portion can be adhered to the object surface through an adhesive or a pressure-sensitive double-sided adhesive tape. Can be fixed below. Since the metal layer is integrally connected to the base portion in the molding process of the facing engagement fastener member, the adhesiveness of the base portion of a large number of facing engagement fastener members is reliably improved with good reproducibility. Therefore, according to the present invention, a face-to-face engaging fastener member that can be quickly and firmly fixed to a desired object surface via an adhesive or a pressure-sensitive double-sided adhesive tape is manufactured with high reliability.

[Brief description of drawings]

FIG. 1 is a perspective view of a facing engagement fastener member according to an embodiment of the present invention.

2 is a cross-sectional view taken along the line II-II in FIG.

FIG. 3 is a side view of a modified example of the facing engagement fastener member of FIG.

4A and 4B are views showing a manufacturing process of the facing engagement fastener member of FIG. 1, including (a) a cross-sectional view of a mold, (b) a cross-sectional view of a polymeric material when injected, and (c) a molded facing member. It is a longitudinal cross-sectional view showing a compound fastener member together with a leg mold.

FIG. 5 is a perspective view of a metal foil used in an embodiment of the present invention.

FIG. 6 is a view of a conventional fastener including a pair of face-to-face engaging fastener members, (a) a schematic side view before interlocking and (b) a schematic side view after interlocking.

[Explanation of symbols]

 10 ... Face-to-face engaging fastener member 12 ... Base portion 14 ... Headed stem 16 ... Leg portion 18 ... Head portion 20 ... Main surface 22 ... Base end 24 ... End 26 ... Back surface 28 ... Metal foil 100 ... Base portion mold 102 ... Mold for leg 104 ... Mold for head 106, 108, 110 ... Mold space

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Norihito Shibahara 3-8-8 Minamihashimoto, Sagamihara-shi, Kanagawa Sumitomo 3M Co., Ltd. (72) Innovator Shusei Sawajiri 3-8-8 Minamihashimoto, Sagamihara-shi, Kanagawa Sumitomo Within 3M Co., Ltd.

Claims (10)

[Claims] 1. A base portion having a main surface and a back surface opposite to the main surface, a leg portion protruding from the main surface of the base portion, and a head portion connected to an end of the leg portion. A face-to-face engaging fastener member comprising a plurality of headed protrusions that are erected on a base in a predetermined spaced arrangement, wherein a metal layer is formed on the back surface of the base. 2. The face-to-face engaging fastener member according to claim 1, wherein the metal layer is made of a metal foil integrally incorporated in the base portion. 3. The face-to-face engaging fastener member according to claim 1, wherein the surface of the metal layer is surface-treated. 4. The face-to-face engaging fastener member according to claim 3, wherein the surface treatment includes an anodizing treatment. 5. The face-to-face engaging fastener member according to claim 1, wherein the metal layer is made of aluminum. 6. The base and the legs and heads of the plurality of headed stems are integrally formed by an injection molding process using a destructively detachable leg mold. And the metal layer is formed on the back surface of the base portion.
5. The facing engagement fastener member according to any one of 5 above. 7. A base portion having a main surface and a back surface opposite to the main surface, a leg portion protruding from the main surface of the base portion, and a head portion connected to an end of the leg portion. A method for manufacturing a face-to-face engaging fastener member comprising a plurality of headed protrusions which are erected on a base at a predetermined distance, the method comprising the following steps. a) A permanent base mold having a space for molding the base, and a destructively detachable leg having a plurality of spaces for molding the legs of the headed stem. Mold for
Preparing a permanent head mold having a plurality of spaces for molding the head of the headed stem, b) a space for molding the base of the base mold, A metal foil is arranged at a position corresponding to the back surface, and c) the space for molding the base and a plurality of spaces for molding the legs are connected to each other so that fluid can flow, and Fixing the destructively detachable leg mold adjacent to the basic base mold, and a plurality of spaces for molding the legs and a plurality of spaces for molding the head. Fixing the permanent head mold adjacent to the destructively detachable leg mold while connecting and so as to allow fluid flow, d) the head mold, The molten polymer material is passed through an introduction passage provided in any one of the leg mold and the base mold, A mold for parts, a mold for legs and a mold for base are poured into the spaces, and e) from the polymer material in the mold for head, the mold for legs and the mold for base. Molding the face-to-face engaging fastener member in which the metal foil is fixed to the back surface side of the base, and f) forming the base mold and the head from the leg mold and the formed face-to-face engaging fastener member. And g) destructively detaching the leg mold from the molded face-to-face engaging fastener member. 8. The method of claim 7, wherein step g) includes dissolving and removing the destructively detachable leg mold with a solvent. 9. The method of claim 8 wherein the solvent comprises water. 10. A base having a main surface and a back surface opposite to the main surface, a leg projecting from the main surface of the base, and a head connected to an end of the leg, respectively. A face-to-face engaging fastener member comprising a plurality of headed protrusions which are erected on a base in a predetermined spaced arrangement, wherein: a) a permanent base mold having a space for molding the base; A destructively detachable leg mold having a plurality of spaces for molding the legs of the headed stem,
Preparing a permanent head mold having a plurality of spaces for molding the head of the headed stem, b) a space for molding the base of the base mold, A metal foil is arranged at a position corresponding to the back surface, and c) the space for molding the base and a plurality of spaces for molding the legs are connected to each other so that fluid can flow, and Fixing the destructively detachable leg mold adjacent to the basic base mold, and a plurality of spaces for molding the legs and a plurality of spaces for molding the head. Fixing the permanent head mold adjacent to the destructively detachable leg mold while connecting and so as to allow fluid flow, d) the head mold, The molten polymer material is passed through an introduction passage provided in any one of the leg mold and the base mold, A mold for parts, a mold for legs and a mold for base are poured into the spaces, and e) from the polymer material in the mold for head, the mold for legs and the mold for base. Molding the face-to-face engaging fastener member in which the metal foil is fixed to the back surface side of the base, and f) forming the base mold and the head from the leg mold and the formed face-to-face engaging fastener member. And a mold for removing the leg mold, and g) destructively detaching the leg mold from the molded face-to-face fastener member, the face-to-face fastener being manufactured by a method including steps. Element.