JPH0470883B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing soles of men's shoes, women's shoes, etc.

(Prior Art) Conventionally, the manufacturing method for this type of shoe sole is to provide a concave part from the non-stepping part on the contact surface side of the outsole to the toe part, and to form a concave part between the non-stepping part and the toe part on the adhesive surface side of the outsole. An injection part that communicates with the recess through an injection port is provided in the middle part of the recess, and raw materials such as paste-like synthetic resin or rubber are injected from the injection part into the recess to integrate only the anti-slip piece. I was trying to mold it.

(Problem to be Solved by the Invention) However, the toe side of the contact surface of the outsole has a slight stopper function due to the anti-slip piece, but the heel side of the contact surface of the outsole does not have any stopper function. Because of this, there is a risk that the outsole, heel base, top lift, etc. may peel off, and raw materials such as paste-like synthetic resin or rubber may not be injected from the injection part into the recess on the toe side of the outsole's contact surface. Because the anti-slip pieces are integrally molded by injection, the static electricity from the entire sole of the foot cannot escape (discharge) to the ground, leading to discomfort when walking in the shoes.

Therefore, the present invention was created to solve the above-mentioned problems, and it completely prevents peeling on the outer sole, inner sole, heel base, top lift, etc. To provide a method for manufacturing a shoe sole that can be comfortably worn without causing discomfort due to static electricity.

(Means for Solving the Problems) In order to achieve the above-mentioned object, in the present invention, one or more injection holes are bored at appropriate intervals in the toe side treading part of the outsole. In addition, several injection holes are drilled at appropriate intervals in the heel of the outsole, and an adhesive is applied to the adhesive surface of the outsole and each injection hole that exhibits maximum adhesive strength within an appropriate high temperature range. After applying the agent and allowing it to fully penetrate and drying for a suitable number of hours, an appropriate high temperature antistatic material such as synthetic resin or synthetic rubber in the form of a paste is injected from the adhesive side of the front sole, and the back sole and each The anti-slip piece and the heel base are integrally molded, and a top lift is integrally molded with the outsole at a suitable location on the ground surface of the heel base through an injection hole in the heel base.

(Function) The present invention uses the above-mentioned technical means to ensure that each anti-slip piece, heel base, top lift, etc. exhibits an excellent stopper function, and also removes static electricity from the entire sole of the foot. It allows discharge (discharge) to the ground via each non-slip piece and heel base.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, first, an outsole 1 made of leather or synthetic rubber (including foamable synthetic rubber)
One or more pieces (four pieces in the figure) on the toe side of the foot.
Star-shaped injection holes 2 are formed on the bottom surface of the shoe at appropriate intervals, and several injection holes 3 are formed on the heel portion of the outsole 1 at appropriate intervals.

Next, on the adhesive surface 4 (upper surface in the figure) of the outsole 1 and each injection hole 2, 3, an adhesive that exhibits maximum adhesive strength at an appropriate high temperature of about 160°C to 200°C is applied. After applying and allowing sufficient penetration and drying for a suitable number of hours, apply high temperature paste synthetic resin (vinyl chloride resin, urethane resin, TR resin, etc.) or synthetic rubber (including foamable synthetic rubber), etc. An antistatic material is injected from the adhesive surface 4 side of the outsole 1 to integrally mold the backsole 5, each of the star-shaped non-slip pieces 6 on the bottom surface, and the heel base 7.

At the heel of the back sole 5, an appropriate number of large holes 8 are provided for each injection hole 3 of the front sole 1, mainly to reduce the weight.
The grooves are recessed at appropriate intervals from the heel base 7 side to the heel base 7 side, and each of the non-slip pieces 6 on the peripheral edge of the heel part of the back sole 5 and the toe side stepping part of the back sole 5 has a large number of small holes formed in the molding. Part 9
Drill holes at appropriate intervals.

The front part of the contact surface 10 of the heel base 7 is made of leather or synthetic rubber (including foamable synthetic rubber).
A top lift 11 made of aluminum is integrally molded with the outsole 1 through an injection hole 12 in the heel base 7, and a non-slip piece 13 in the shape of an oblong bottom is provided at the rear of the contact surface 10 of the heel base 7. This is what I did.

Further, each of the anti-slip pieces 6 is formed into a substantially inverted T-shape in cross section, and is adapted to be locked on the ground surface 14 side of the outsole 1. In addition, each anti-slip piece 6 and anti-slip piece 1
3 is drilled from each ground plane 10, 14,
Alternatively, it may be recessed. Further, although each of the anti-slip pieces 6 is shown to have a star-shaped bottom surface, and each anti-slip piece 13 is shown to have an elongated bottom surface, the present invention is not limited to these in any way, and may be formed into other bottom shapes. Instead, the anti-slip piece 13 is bonded to the heel base 7 with an adhesive or the like, but it may also be integrally molded with the back sole 5.

The thickness and hardness of the outer sole 1, the inner sole 5, the heel base 7, the top lift 11, etc. can be changed as desired.

As in one embodiment of the present invention, if an appropriate number of large holes 8 are recessed in the heel portion of the sole 5 at appropriate intervals from each injection hole 3 of the front sole 1 to the heel base 7 side, the sole of the shoe can be Not only can the weight be reduced, but also the material cost for each of the large hole portions 8 can be reduced, making it economical and easy to mold.

(Effects of the Invention) As described above, the present invention has one or more injection holes 2 formed at appropriate intervals in the toe side stepping part of the outsole 1, and the heel part of the outsole 1. Several injection holes 3 are drilled at appropriate intervals, and an adhesive that exhibits maximum adhesive strength within a high temperature range is applied to the adhesive surface 4 of the outsole 1 and each injection hole 2, 3. After thoroughly soaking and drying for several hours, apply an antistatic material such as synthetic resin or synthetic rubber at a high temperature to the top and bottom of the bottom.
Injected from the adhesive surface 4 side of the back sole 5 and each non-slip piece 6
and the heel base 7 are integrally molded, and furthermore, a top lift 1 is attached to the proper position of the ground contact surface 10 of the heel base 7.
1 is integrally molded with the outsole 1 through the injection hole 12 in the heel base 7, so that each anti-slip piece 6, heel base 7, top lift 11, etc. exhibits an excellent stopper function. 1. Peeling of the back sole 5, heel base 7, top lift 11, etc. can be completely prevented.

In addition, an antistatic material such as synthetic resin or synthetic rubber in the form of a high-temperature paste is applied to the adhesive surface 4 of the outsole 1, each injection hole 2 of the toe side stepping part, and the injection hole 3 of the heel part of the outsole 1.
Injected from the adhesive surface 4 side of the back sole 5 and each non-slip piece 6
By integrally molding the heel base 7 and the heel base 7,
Since the sole 5 made of antistatic material such as synthetic resin or synthetic rubber is provided on the entire surface of the adhesive surface 4 of the front sole 1 that the sole of the foot comes into contact with, static electricity from the entire sole of the foot is removed from the sole 5. It can be reliably discharged (discharged) to the ground via the anti-slip piece 6 and the heel base 7, and the shoes can be comfortably worn while walking without experiencing the discomfort caused by static electricity as in the case of conventional shoes. .

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a bottom view, and FIG. 3 is a longitudinal sectional side view of the main part. 1... Outer bottom, 2... Injection hole, 3... Injection hole, 4
...Adhesive surface, 5...Back bottom, 6...Non-slip piece, 7...
Heel base, 8...Large hole part, 9...Small hole part, 1
0... Ground plane, 11... Top lift, 12...
Injection hole, 13... anti-slip piece, 14... ground plane.

Claims (1)

[Claims] 1. One or more injection holes are drilled at appropriate intervals in the toe side stepping part of the outsole, and several injection holes are bored at appropriate intervals in the heel part of the outsole. Apply an adhesive that exhibits maximum adhesive strength at an appropriate high temperature to the adhesive surface of the outer bottom and each injection hole, allow it to penetrate sufficiently, and dry it for an appropriate number of hours. Antistatic material such as resin or synthetic rubber is injected from the adhesive side of the front sole, and the back sole, each anti-slip piece, and heel base are integrally molded, and a top lift is added to the appropriate location on the ground surface of the heel base. A method of manufacturing a shoe sole, comprising integrally molding it with the outsole through an injection hole in a heel base.