JPH03143403A - Manufacturing process of shoes - Google Patents

Abstract

PURPOSE:To remarkably simplify the manufacturing process of shoes by transplanting short fibers on the inside of the external leather of shoes by an electrostatic transplantation to provide a lining layer so that it becomes unnecessary to manufacture in advance the lining separate from the external leather of shoes. CONSTITUTION:Vinyl chloride plastisol is poured into a hollow die and heated to the temperature of 100 to 300 deg.C. Thus the sol is converted into half gel from a contact part with a metal die. After growing it to a predetermined thickness, sol that is not converted into gel inside of it is discharged. The remaining half gel layer is further heated and then cooled after completely converting it into gel to obtain an external leather 1 having the same shape in the original pattern and the surface of the external leather. Adhesive is applied on the inside of the external leather of shoe formed in slash molding in its entirely to provide a adhesive layer 2. After applying adhesive, short fibers are immediately treated with electrostatic transplantation to provide a lining layer 3. Short fibers electrically energized penetrate into the whole surface of the external leather with electrostatic force, thus forming an even raising layer on the inside of external leather of shoe in its entirely to form the lining layer 3.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method of manufacturing shoes.

(Prior Art) As one of the methods for manufacturing synthetic resin shoes, a manufacturing method using 7-sole molding is known. The shoe manufacturing method using the slash sole type is widely used in manufacturing various shoes because it allows shoes to be produced in one shoe.

As shown in FIG. 3, the structure of a shoe made by conventional sura-no-yu molding generally consists of a shoe outer skin +1, a lining material 12, and an insole 3 with a horizontal hole.

As a method of manufacturing this type of shoe, the outer skin 11 of the shoe is formed by integral molding of a plastic chloride wood 113 in the shape of a plastic wrapper. Then, by connecting the inner sole 13 of the inner sole 13 with the inner sole 13 of the 11th part of the shoe and the lower FU n part 1. The forming force 1″ is known.

(Problem to be solved by the invention: By the above-mentioned Suranonoyu bottom shape method (L is
) As shown in ), conventionally, in the case of shoes with tight coverings such as boots, the lining (even if looseness occurs near the contact area of the 12th or 1st covering, it is difficult to see from the outside), Problem: It didn't work.

However, as shown in FIG. 3(b), when short shoes with a low hem are manufactured using the same manufacturing method, the slack in the lining material 12 is visible from the outside due to the low hem, resulting in a poor product image; There was a problem that caused the .

The present invention solves the deficiencies of the prior art described above, and eliminates the slackness of the lining on the inner surface of the outer membrane of the shoe, thereby easily manufacturing shoes that have an excellent external product image and are durable. The purpose is to provide manufacturing capability iJg.

6. Means for Solving the Problem] The present invention does not solve the problem itself. t, static'; E hair-planted to create a short length of 1"H internal two-layered", 27 layers to integrate the shoe outer skin and lining layer, eliminating slack at the opposing joints. That is, the present invention provides: (1) Shoes in which short fibers are implanted on the inner surface of the outer skin of the shoe by the static toxicity method to provide a lining layer, and an insole is attached. manufacturing method.

(2) With masking applied to the inner sole of the inner surface of the outer membrane of the shoe, a short length 'i' = t is implanted on the inner surface of the outer membrane of the shoe by a Shizushi hair transplant shop to form a lining layer, and then the masking is removed,
A method of manufacturing shoes characterized by attaching an insole to the masking removed portion.

The main points are as follows.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The shoe outer skin 1 shown in FIG. 1 is manufactured using a known slash sole shape.

First, the desired shoes are made from tree bark and used as shoe prototypes.

In order to obtain a fine and precise leather pattern on the surface of this shoe model, a mold is made using electroforming.

After the shoe prototype is made into a conductor using the silver mirror method or the vacuum flower bonding method, it is immersed in an electroforming solution containing melted materials such as 2, Kel, alloy, etc., and the first current is applied to perform electroforming. Thereafter, by separating the mold from the shoe model, a hollow mold is obtained which has a fine and precise surface design on the hollow inner surface, similar to the surface of a wooden leather shoe.

Vinyl chloride plastisol is injected into this hollow mold, heated to a temperature of 100 to 300°C, the sol is semi-gelled from the contact part with the metal mold, and grown to a predetermined thickness. The ungelled sol is discharged, the remaining semi-gelled layer is further heated, completely gelled, and then cooled to obtain a shoe outer skin I having the same surface shape as the original model.

Next, an adhesive is applied to the entire inner surface of the shoe outer skin I produced by surano-yu molding to provide an adhesive layer 2. As the adhesive, one that has bonding properties to both the straw shell 1 and the short fibers can be used, and known adhesives can be selected from a variety of materials.

Examples: Acrylic IJ solvent system, water-soluble resin system, emulsion system, polyester 4-layer system, water-soluble resin system, interemulsion system, gel, 6-component system, water volume 1 There are one-component and two-component adhesives such as '1 resin type and '1 Margin9 adhesive type.

As an example, the outer shell is made of an Evinyl chloride resin formulation;
When the short fibers are nylon, a polyester emulsion is preferred as the adhesive.

Adhesion (application method: - Boat fishing, air spray, etc.) can be used.

After applying the adhesive 1, the short fibers are then electrostatically flocked using a conventional method to form a lining layer 3.

Electrostatic flocking treatment is 73. Inside the device that can make the field or (!1 field)
6 Next, the short fibers are sent between the outer skin and the electrode, and lOXν~
The short fibers are energized for 11'f through a constant current of 100 KV. In this case, there is a method in which the short fibers fall from above to below (
There are two methods: the down method) and the method of sucking the short fibers upward from the bottom (amp method), both of which can be used.

The JIF J% short fibers pierce the entire surface of the outer skin of the shoe at right angles due to static gravity, forming a uniform raised layer on the entire inner surface of the outer skin of the shoe, thereby forming the lining layer 3.

The short fibers used in the invention can be synthetic fibers such as nylon and polyester, artificial fibers such as rayon, natural fibers such as cotton, or a mixture of these fibers in any proportion. The length and thickness of these short fibers can be arbitrarily set depending on the intended use of the shoe. For example, one with a length of 0.5 to 4 mff1 and a thickness of 0.5 to 5 denier can be used, especially one with a length of 0.6 to 2 mff and a thickness of 0.8 to 2 denier.
Denier is preferred. Also, short fibers are static? In order to increase the efficiency of HVL hair, it is possible to perform a four-way treatment that lowers electrical resistance. The conductive treatment includes a method of attaching a water-absorbing substance such as a surfactant to the surface of the short fiber, a method of attaching/removing water itself, a method of attaching conductive fine particles, etc. 4 The specific resistance value of lightning-treated short fibers is 10.
6 to 101Ω is used, especially I x 10' to
5×10′°Ω is preferred.

After forming the lining layer 3, the inner sole is placed on the bottom of the shoe outer skin.
Paste 1 with adhesive and make it ¥iL5.

In the present invention, six insoles can be provided if necessary.

Further, in the present invention, in order to further improve the adhesion between the shoe outer skin 1 and the midsole 4, a masking 7 (not shown in FIG. 2) may be provided at the midsole portion 911, and hair flocking may be performed.

As shown in FIG. 2(a), after the shoe outer skin l is formed by slan/yu molding, a masking 7 is placed on the midsole inside the shoe outer skin, and adhesive is applied to the entire surface of the shoe outer skin, and the same process as above is performed. Next, a lining layer 3 is provided by an electrostatic seeding method.

Next, as shown in FIG. 2(b), when the masking 7 is removed, a masked removed portion that does not include the short fiber lining layer is formed.

As shown in FIG. 2(c), the insole 4 is pasted on the masking removed portion 8 with adhesive to form the shoe 5.

Furthermore, if necessary, an insole can be attached to the insole 4 with adhesive to form a shoe.

FIG. 1 is a cross-sectional view of a shoe manufactured by the manufacturing method of the present invention, in which a lining layer 3 formed by electrostatic flocking treatment of staple fibers is provided on a shoe outer skin 1 via an adhesive layer 2. ing. Further, an insole 4 is placed on the bottom inside the shoe outer skin l, and an insole 6 is placed on top of the insole 4, thereby forming a shoe t5.

(Example] The present invention will be explained in more detail with reference to Examples below.

Example I 100 parts of vinyl chloride resin for paste, 85 parts of plasticizer
The plastisol formulation with the overlay was shaped into a slash sole to produce a shoe shell. A polyester emulsion adhesive was then applied to the entire inner surface of the shoe shell.

Immediately after applying the adhesive, the thickness is 2 denier and the length is 1.5
Electrostatic flocking was carried out under the condition that nylon short fibers of 200 m were charged by passing a current of 20 KV, and the flock was carried out on the inner surface of the outer skin of the shoe to form a lining layer.

An insole made of a leather board is attached to the bottom inside the shoe outer shell using a lubricant R agent, and an insole made of a punched leather board made of vinyl chloride resin and resin is attached to the upper part of the insole, thereby producing the shoes of the present invention. I got it.

Example 2 A shoe outer skin was manufactured using a plastisol formulation in which 85 parts by weight of a plasticizer was added to 100 parts by weight of a vinyl chloride resin for paste, using a slash sole shape. Next, a masking material made of paper was placed on the bottom of the inner surface of the shoe outer membrane, and a polyester emulsion adhesive was applied to the entire inner surface of the shoe outer membrane.

Immediately after application, conduct electrostatic flocking using short nylon fibers with a thickness of 2 denier and a length of 1.5 mm by passing a current of 20 KV under the following conditions: Established.

The masking material is taken out, an insole made of a leather board is attached to the masking part using an adhesive, and an insole made by punching out a leather board made of vinyl chloride resin is attached to the upper part of the insole, and the shoes of the present invention are manufactured. Obtained.

[Effects of the Invention] As explained above, in the manufacturing method of the present invention, short fibers are flocked on the inner surface of the shoe outer skin by electrostatic flocking to provide a lining layer. It is no longer necessary to manufacture the shoe separately from the outer skin of the shoe, and as a result, the manufacturing process can be greatly simplified and work efficiency can be improved.

Furthermore, since the shoe outer skin and lining layer are integrally formed,
The conventional problem of loose lining material can be solved,
Shoes with no defects in appearance and an excellent product image can be obtained.

Because the short fiber flocking method uses electrostatic flocking, the short fibers are flocked at right angles to the inside of the outer membrane of the shoe.
When in use, it fits well and holds the foot well.
It has the effect of preventing slippage.

In the present invention, the insole may be bonded directly to the flocked part, but a masking material is further placed on the bottom inside the outer membrane of the shoe,
By applying the method of attaching the insole after applying electrostatic flocking, the adhesion force is increased because the outer membrane of the shoe and the insole are directly bonded, compared to the method of attaching the insole directly to the flocked area. , which has the advantage of further improving durability during use.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of shoes manufactured by the pre-manufacturing process according to the present invention, and FIG. 2 is an explanatory diagram of a method for flocking short beads by electrostatic flocking using the masking of the present invention. Figure 3 shows a longitudinal cross-sectional view of a shoe manufactured using the conventional bond manufacturing method.
5. Shoes 7.. Masking 8. Masking removed part Figure 8... Masking/da flooring item number (a)

Claims (2)

[Claims] (1) A method for manufacturing shoes, which comprises flocking short fibers on the inner surface of the shoe outer skin by electrostatic flocking, providing a lining layer, and attaching an insole. (2) With masking applied to the inner sole of the inner surface of the outer shoe outer layer, staple fibers are implanted on the inner surface of the outer shoe outer layer using electrostatic flocking to form a lining layer.Then, the masking is removed, and the inner sole of the inner surface of the outer shoe outer layer is masked. A method of manufacturing shoes characterized by attaching soles.