JPH084262Y2 - Surface fastener member for mold-in - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface fastener member for mold-in, which has a large peeling resistance and is embedded in a molded body.

[0002]

2. Description of the Related Art Recently, surface fasteners have begun to be used for joining skin materials for automobile seats. Also, some proposals have been made for a surface fastener member for mold-in which is suitable for integrally fixing the surface fastener to a molded body. For example, a thin metal sheet is placed on the upper surface of the engagement element group of the surface fastener, the engagement element group is covered with a film through the metal sheet, and the film is fixed to the entire periphery of the surface fastener. A surface fastener member has been proposed in JP-A-60-179003.

[0003]

A surface fastener member for mold-in used by embedding it in a conventional molded body has an effect of preventing the molding material from entering the engaging element group during manufacturing of the molded body. However, the molded product molded using this surface fastener member for mold-in has a relatively large force applied when the surface fastener is engaged and disengaged. It has been pointed out that there are problems such as loosening and destruction of the molded body at the end of the surface fastener that is embedded, and the surface fastener coming off the molded body.

An object of the present invention is to provide a surface fastener member for mold-in, which can be easily attached to a mold and can be embedded / fixed in a molded body in a favorable surface fastener.

[0005]

SUMMARY OF THE INVENTION The present invention provides an engaging element group for a surface fastener having an engaging element group on one surface of a base material and an embedded element portion for embedding in a molded body on the other surface. The upper surface is covered with a soft magnetic metal tape and a film-like material, and both sides of the film are fixed to a substrate to form a tubular body with the film-like material and the surface fastener, and both end openings of the tubular material are closed. In the molded surface fastener member, the mold-in is characterized in that both ends of the tubular body are closed at least 2 mm from the end, and the unsealed engaging element and the non-deformed embedded element are left at the end. It is a surface fastener member.

[0006]

According to the present invention, the upper surface of the engaging element group of the surface fastener is covered with the soft magnetic metal tape and the film-like material, and both sides thereof are fixed to the base material so that the film-like material and the surface fastener are cylindrical. By forming a body, providing both ends closed portions of the tubular body at least 2 mm inside from the end, and forming a surface fastener member for mold-in leaving an unsealed engaging element and a non-deformed embedded element at the end, Since the unsealed engaging element portion is embedded with the forming material, a mold-in molded body is formed that can withstand a relatively large force applied when engaging and disengaging the surface fastener.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the drawings and embodiments.

FIG. 1 is a cross-sectional view of a surface fastener member for mold-in, which has a large number of engaging elements 3 on one surface of a substrate 2.
The upper surface of the engaging element group of the surface fastener having the embedding element 4 for embedding in the molded body on the other surface is covered with the soft magnetic metal tape 5 and the film-like material 6 so that the both-ends closed portion 7 extends from the end. A mold-in structure which is provided at a position of L and has openings 8 left at both ends to leave unsealed engaging elements 9, and one embedded engaging element also has a non-deformed embedded element 10 left at its ends. The surface fastener member 1. FIG. 2 is a cross-sectional view of a molded foam molded article obtained by mounting a mold-in surface fastener member on a mold, and mounting the mold-in surface fastener member 1 of FIG. 1 on a molding die 11 to form a mold. A molded foam molded body is formed by fixing the installed position with the installed magnet 12 and injecting a molding material to form a foamed molded body 14, and 13 is a molded body that has penetrated into the opening at the end of the mold-in surface fastener. . FIG. 3 is a cross-sectional view of a conventional surface fastener member for mold-in.
Is a surface fastener member for mold-in in which the upper surface of is covered with the soft magnetic metal tape 5 and the film-like material 6 and the closed positions of both ends are provided at the ends, and 7 is the closed portion.

The surface fastener used in the surface fastener member for mold-in of the present invention is a surface fastener having an engaging element group on one surface of the base material and an embedded element portion embedded in the molded body on the other surface. . Such surface fasteners are polyester fibers, polyamide fibers, other synthetic fibers, knitting and weaving recycled fibers, and the like, surface fasteners having engaging elements that engage with each other on one surface, or polyester resin, polyamide resin, polyolefin resin, It is a molding surface fastener having another engaging element which is engaged with each other by molding other thermoplastic resin or curable resin. The other surface of these surface fasteners enhances the bondability with the molded body,
In order to stabilize the form, an embedded element portion for embedding in the molded body is provided.

The soft magnetic metal tape used in the present invention is, for example, a tape in which a magnetic material or a magnetic material is applied to a sheet-shaped base material, a magnetic or magnetic metal tape, and the like. Magnetic metal tape is preferably used.

On the other hand, the film-like material for covering the surface fastener is not particularly limited to a material as long as it covers and protects the engaging element group at least until the fluidity of the molded body is lost. Examples of such a film-like material include polyethylene, polypropylene and other polyolefin film-like materials, polyamide, polyester, polyvinyl alcohol-based resin and other synthetic resin film-like materials, cellophane,
A special film-like material selected from cloth-like material such as paper and non-woven fabric or metal foil such as aluminum foil can also be used.

Also, the closed portions provided at both ends of the tubular body formed of the surface fastener and the film-like material have a length L from the end of at least 2 mm, preferably 3 to 20 mm, and both ends are Leaving unsealed engaging elements and non-deformed buried elements. If the length to the closed part at both ends is short, the unsealed engagement element is not sufficiently embedded in the molded body, so the molded body is destroyed by the engagement and disengagement force of the surface fastener, and the surface fastener loosens or comes off. . In addition, if the length from the end to the closed portion is long, the effective length of the surface fastener decreases, which is not preferable. As a method for forming the closed portion, a thermocompression bonding method, an ultrasonic fusion bonding method, an ultrasonic fusion bonding method, or the like is preferably used, but an adhesive such as a pressure sensitive adhesive can also be used.

Example 1 Polyamide resin was melt-molded, and on one surface of a base material having a width of 30 mm, engaging element rows in which a plurality of engaging elements having a mushroom-shaped cross section were erected in a row in the length direction were formed at 2 mm intervals. A row of engaging elements,
On the other side, place a row of multiple embedded elements with a mushroom-shaped cross section.
Using a molding surface fastener provided in a row, a thin steel tape having a width of 13 mm was placed on the upper surface of the engaging element group, covered with a synthetic resin film from above, and both sides were joined to a base material to form a tubular body. After that, it is cut into a length of 30 cm, and the openings at both ends are closed and fixed at a position 5 mm inside from the end by an ultrasonic fusion bonding method.
Surface fastener member for mold-in as shown in [I]
made.

For comparison, the opening and closing of both ends was fixed to the ends in the conventional manner, and a surface fastener member [II] for mold-in as shown in FIG. 3 was produced.

Next, the mold fastener surface fastener members [I] and [II] are mounted and fixed to a mold for molding as illustrated in FIG. 2, and then the mold is preheated at a mold temperature of 80 ° C. A polyurethane resin composition containing a foaming agent, a filler, a lubricant, and a stabilizer was injected and foam-molded, and then the molded body was taken out from the mold to manufacture a molded body equipped with a surface fastener.

The molded product using the surface fastener member for mold-in [I] of the embodiment has both ends of the surface fastener embedded in the molded product, and the strength required for peeling the surface fastener from the molded product is high. It has a strength of 5 kg or more, far exceeding the engagement and disengagement strength of surface fasteners. On the other hand, in the molded product using the surface fastener member for mold-in [II] of the comparative example, both ends of the surface fastener are floated from the molded product, and the strength required for peeling the surface fastener from the molded product is 3 Kg or less. It was as weak as or stronger than the engagement / disengagement strength of the surface fastener.

[0017]

The surface fastener member for mold-in of the present invention is a surface fastener member that can be embedded in a molded body to form a molded body with high breaking strength.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a surface fastener member for mold-in according to the present invention.

FIG. 2 is a cross-sectional view of a molded foam molded article obtained by mounting the surface fastener member for mold-in of the present invention on a mold.

FIG. 3 is a cross-sectional view of a conventional surface fastener member for mold-in.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold-in surface fastener member, 2 base material, 3 engaging element, 4 embedded element, 5 soft magnetic metal tape, 6 film-like material, 7 closed part, 8 opening part, 9 unsealed engaging element, 10 non-deformable Embedded element, 11 molding die, 12 magnet, 13 molded body penetrating into opening, 14 foamed molded body, L length from end to closed portion.

Claims (1)

[Scope of utility model registration request] 1. A soft magnetic metal tape and a film are provided on the upper surface of the engaging element group of a surface fastener having an engaging element group on one surface of a base material and an embedded element portion for embedding in a molded body on the other surface. In a surface-forming fastener member for molding, in which both sides are fixed to a base material to form a tubular body with a film-like material and a surface fastener, and both end openings of the tubular body are closed. , At least 2 from both ends of the tubular body at both ends.
A surface fastener member for mold-in, wherein the surface fastener member for mold-in is provided on the inner side of mm, and the unsealed engaging element and the non-deformed embedded element are left at the ends.