JPH0763208A - Manufacture of connecting fastener - Google Patents

Abstract

PURPOSE:To attain safety, saving of resources and a costby applying hot melt type adhesive to one surface of a paper tape-like connecting base member to form an adhesive layer, arranging fasteners on its with an ordered condition, heating them, and cooling them. CONSTITUTION:A connecting member 1 is prepared by forming an adhesion layer 3 on one surface of a tape-like connecting base member 2. The connection base member 2 is made of paper, and has proper rigidity. The adhesion layer 3 is prepared by heating and melting hogh melt type adhesive, applying it to the connecting base member 2, and then cooling it for solidifying. As the adhesive, at least one is selected from terpene resin, asphalt and its derivative, polyvinyl acetate and the like. Fasteners are faced to each other with equal distances on the adhesive layer 3. After heating, the fasteners 4 are adhered to the adhesive layer 3. Cooling is further performed for solidifying the adhesive layer 3 which is then fixed to the connecting base member 2 with the fasteners 4 being in a state of a constant stance. Then, the connection fasteners are obtained. The connecting base member is safely made of paper, bringing about the saving of resources and cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a connecting fastener which is formed by connecting a plurality of fasteners such as nails.

[0002]

2. Description of the Related Art Generally, a connecting fastener is formed by connecting a plurality of fasteners such as nails to a connecting member, but a connecting wire made of metal or synthetic resin is often used as the connecting member.

When connecting with a metal wire, each fastener is welded to the wire. Although this connection method reduces cost, it breaks between the fastener into which the wire is driven and the next fastener when driving,
There is a problem in that a part of the metal wire may be scattered at the time of driving, which is dangerous in the work.

Further, a synthetic resin sheet is used as a connecting member,
There is also a system in which a fastener is adhesively connected to this. Although this is less dangerous than metal wires, scattered synthetic resin pieces cannot be burned and are discarded, which is a problem in terms of environmental protection.

Further, there is also a method of connecting fasteners with a connecting band made of synthetic resin. The fastener is held in a hole formed in the tubular coupling band. Since each fastener is driven separately from the connecting belt when driving, there is no danger of danger. However, since the connecting belt has a complicated structure and a relatively large amount of material is used, the cost is high, and the used connecting belt is discarded, which causes problems of resource saving and environmental protection.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above problems and, in particular, by using a paper-made connecting base material, it is safe and saves resources.
An object of the present invention is to provide a method of manufacturing a connecting fastener that can achieve low cost.

[0007]

In order to achieve the above-mentioned object, a method for manufacturing a connecting fastener according to the present invention is such that a hot-melt type adhesive is applied to one surface of a tape-like connecting base material made of paper and bonded. After forming the layers, facing the adhesive layer with a plurality of fasteners in an aligned state, heating the adhesive layer and the fastener, and then bonding the fastener to the adhesive layer, and then cooling the adhesive layer and the fastener. Is characterized by.

[0008]

According to the above-mentioned structure, the adhesive layer on the paper-made connecting base material and the fastener are heated to adhere the fastener to the adhesive layer in a molten state, and further cooled and solidified to obtain the connected fastener. be able to.

[0009] Such a connecting fastener is safe because the connecting base material for connecting the fasteners is made of paper, and the connecting base material has a simple structure in which it is formed in a tape shape, thus saving resources. Further, since the connecting base material is made of paper and can be instantly bonded with a hot-melt type adhesive, and productivity is good, cost reduction can be achieved.

In the connection fastener of the above construction, a part of the paper base material is broken when it is driven, but it is safe because it does not scatter, and it can be burned even if it is scattered at the work site. Little risk of contamination. Also,
The structure of a connecting material made of a paper base material and a hot-melt adhesive is low in cost of the material itself, has a simple structure, and is instantly bonded to increase productivity, so that the total cost is also low.

Further, according to the above-mentioned manufacturing method, after heating the adhesive layer and the fastener by the hot-melt adhesive,
When the fastener is adhered to the adhesive layer, the adhesive is melted by heating to form a fluid paste, and the center is raised due to the surface tension. Therefore, when the shaft portion of the fastener is joined, the adhesive and the shaft portion are joined together. In the adhesive structure of No. 3, the top portion of the adhesive largely covers the peripheral surface of the shaft portion, and the hem portion of the adhesive slightly covers the peripheral surface of the shaft portion. in short,
Since the holding area of the adhesive shaft in the circumferential direction is large,
The holding power of the fastener is improved.

In connection with this, when a diagonally connected fastener is wound in a coil shape, the shaft of the fastener is arranged on the one-leaf hyperboloid, so that the connecting material between the fasteners is twisted. A property that allows the twist, that is, a certain degree of flexibility and elasticity, is required between the connecting member and the shaft portion of the fastener. Corresponding to this, according to the method of the present invention, as described above, the adhesive to the shaft portion of the fastener is large in the central adhesive portion in the width direction of the connecting base material and small in the adhesive portions on both sides, so that it adheres to the connecting base material. The tolerance of twisting of the connecting material composed of layers is large. Therefore, the above-mentioned adhesive structure is a structure in which one-leaf hyperboloids can be easily formed. Therefore, according to the present invention, it is possible to manufacture a connection fastener having a large number of fasteners per connection.

[0013]

The method of the present invention is illustrated by the manufacturing process of FIG. First, as shown in FIG. 2, a connecting member 1 for connecting fasteners is formed. The connecting material 1 is formed by layering an adhesive layer 3 on one surface of a tape-shaped connecting base material 2.

The connecting base material 2 may be made of paper and have an appropriate rigidity.

The adhesive layer 3 is formed by heating and melting a hot-melt adhesive to coat it on the paper-made connecting base material 2 and then cooling it to room temperature to make it a solid state. Hot melt adhesives include terbene resin, asphalt, rosin and its derivatives, polyvinyl acetate, ethylene-vinyl acetate copolymer, polyamide, phenoxy resin, ethyl cellulose, polyisobutylene, petroleum resin, polyester, etc., alone or in combination. Composed. The hot-melt adhesive becomes a paste when heated and melted, and has the property of solidifying when cooled to room temperature, and is characterized in that it can be bonded in an extremely short time. It is preferable to use ethylene-vinyl acetate copolymer as a main component, in which additives such as rosin and paraffin are used in consideration of cost and appropriate viscosity in the temperature range of use of the fastener.

The connecting material 1 as described above is formed into a tape shape by a slitting process in which an adhesive layer made of a hot-melt adhesive is layered on one surface of a sheet-shaped paper material in advance and cut into strips. do it.

Thereafter, the fasteners are bonded on the adhesive layer 3 of the connecting member 1 at equal intervals and connected. In this case, the connecting material 1 and the plurality of fasteners are supplied to the predetermined positions. Connecting material 1
In the normal case, two strips are arranged in parallel as shown in FIG. In the aligned state, the fasteners 4 are supplied so as to be oblique to the connecting material 1. Then, the adhesive layer 3 and the fastener 4 are opposed to each other, the adhesive layer 3 and the fastener 4 are heated by a heater, and then the fastener 4 is adhered to the adhesive layer 3.

After that, the adhesive layer 3 and the fastener 4 are cooled. As a result, the adhesive layer 3 is solidified, and the fastener 4 is fixed on the connection base material 2 while maintaining a fixed posture,
A connecting fastener as shown in FIG. 4 is obtained.

By the way, in the step of adhering the fastener 4 to the adhesive layer 3, the hot-melt type adhesive is melted by heating to form a fluid paste, and due to the surface tension, the hot-melt type adhesive is melted.
As in (a), the center is in a raised state. Therefore,
When the shaft portion 4a of the fastener 4 is joined to this chevron-shaped adhesive, as shown in FIG. 6, the bonding structure between the adhesive and the shaft portion is such that the top portion 3a of the adhesive increases the peripheral surface of the shaft portion 4a. The hem portion 3b of the adhesive covers the peripheral surface of the shaft portion 4a slightly. In short, since the holding area of the adhesive in the circumferential direction of the shaft portion 4a is large, the holding force of the fastener 4 is improved.

Further, a large number of fasteners 4 are attached to the long connecting member 1.
When connecting diagonally, it is necessary to wind the whole into a coil. However, when a connecting fastener in which a plurality of fasteners 4 are obliquely connected is wound into a coil,
As shown in FIG. 7, the shaft of the fastener 4 is arranged on the one-leaf hyperboloid, so that the connecting member 1 between the fasteners 4 is twisted. A property that allows this twist, that is, a certain degree of flexibility and elasticity is required between the connecting member 1 and the shaft portion 4a of the fastener 4. Corresponding to this, as shown in FIG. 5 (a), the bonding of the connecting fastener to the shaft portion 4a is large at the central bonding portion (climbing crest portion 3a) in the width direction of the connecting material 1 and Since the bonded portion (the raised hem portion 3b) is small, the tolerance for the twist of the connecting material 1 is large. Therefore, the above-mentioned adhesive structure is a structure in which one-leaf hyperboloids can be easily formed.

When only the fastener 4 is heated and the adhesive layer 3 is not heated, the adhesive layer 3 is melted by bringing the fastener 4 into contact with the adhesive layer 3, so that the fastener 4
Are adhered to the adhesive layer 3. However, in this case, only the portion of the fastener 4 melted by the heat adheres to the shaft portion 4a of the fastener 4, so as shown in FIG.
The molten portion is evenly bonded in the length direction of the shaft portion 4a. Therefore, the holding force is also uniform in the length direction of the shaft portion 4a. Therefore, when the connecting fastener is wound in a coil shape, the connecting material 1 is less likely to be twisted between the fasteners 4, and the entire connecting material is not easily wound in a coil shape.

When only the adhesive layer 3 is heated and the fastener 4 is not heated, the melted adhesive layer 3 is contacted with the cooled fastener 4 and the adhesive layer 3 is solidified as shown in FIG. As a result, the adhesion with the surface of the fastener becomes unstable.

Incidentally, the connecting fastener manufactured by the method of the present invention is safe because it does not scatter even though a part of the paper base material 2 is broken when it is driven in, and burns even if scattered at the work site. Therefore, the risk of environmental pollution is low. In addition, since the cost of the material itself is low and the productivity is high due to the instant adhesion, the cost of the material itself is low in the structure of the connecting material made of the paper base material 2 and the hot-melt adhesive.

[Brief description of drawings]

FIG. 1 is a manufacturing process diagram of a connection fastener according to the present invention.

FIG. 2 is a structural explanatory view of a connecting member.

FIG. 3 is an explanatory diagram of a state in which a fastener is bonded to a connecting member.

FIG. 4 is a side view of the connection fastener in a completed state.

5 (a), (b), and (c) are cross-sectional views showing a state in which the adhesive layer is adhered to the fastener in a heated state, a cross-sectional view in a state in which the adhesive layer is adhered to the fastener in an unheated state, and an adhesive layer, respectively. FIG. 5 is a cross-sectional view of a state in which the fastener is heated and the fastener is not heated.

FIG. 6 is an enlarged view of a bonded portion of a fastener.

FIG. 7 is a side view showing a state in which the connecting fastener is wound in a coil shape.

[Explanation of symbols]

 1 connecting material 2 connecting base material 3 adhesive layer 4 fastener

Claims (1)

[Claims] 1. A hot melt adhesive is applied to one surface of a tape-shaped connecting base material made of paper to form an adhesive layer, and a plurality of fasteners are opposed to each other in an aligned state, A method of manufacturing a connected fastener, comprising heating the adhesive layer and the fastener, bonding the fastener to the adhesive layer, and then cooling the adhesive layer and the fastener.