JPH0214006A - Formation of net base for wig - Google Patents

Abstract

PURPOSE:To obtain the title base retaining a curbed shape for a long period of time by maintaining a flat net member made of synthetic fibers in a state of protruded curved face, applying a solution of a solvent of synthetic fiber, dissolving and bonding crossing points of the synthetic fibers and molding. CONSTITUTION:A flat net member made of synthetic fibers is retained in a molded shape of protruded curbed face, a solution of solvent of the synthetic fibers is applied to the net member, crossing points of the fibers constituting the net member are dissolved and bonded and the net member is molded in such a way that the net form is retained in a curved face of head shape to give a net base for wig having a protruded curved shape along a head shape of wig user.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method of forming a wig base having a net member on the entire surface or at least a portion thereof, and in particular, it is possible to easily form a flat net member into a convex curve along the shape of the head. It relates to a method that can be molded into a shape.

[Prior Art] Net members have traditionally been widely used as materials for wig bases, and the materials for these net members include -
Monofilament and multifilament of nylon, polyester, etc. are used for a.

These net members, whether made of mW or non-magnetic material, are flexible and approximately flat. Therefore, in order to use such a flat net member as a wig base, it is necessary to adjust it to the shape of the head. It is necessary to process this into a curved shape and maintain this curved shape for a long period of time.

The present applicant has disclosed in Japanese Patent Application Laid-Open No. 124615/1983 a method for manufacturing a wig base in which a flat net member is processed into a convexly curved shape by subjecting it to a special molding process. A male head shape molded directly from the user's own head is covered with a synthetic resin film for peeling, a first net member is placed over the film, and a second net member formed of plain weave is further formed. is placed on the first net member, held in that state, dipped in a coating resin solution, dried, and temporarily formed, and then the resin-treated second net member is placed through the synthetic resin film. A head-shaped base net mold is obtained by peeling from the head-shaped male mold and the first net member, and then the filament junctions of the net mold are welded and cut along predetermined dimensions. Become.

[Problem that the invention seeks to solve]

However, with this method, when welding the filament junctions of the second net member that will become the wig base,
The junctions are first bonded by coating with a resin solution and then heated by ultrasonic welding.
There were problems such as requiring a two-step process, making the molding of the net base complicated and relatively expensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for extremely simply and reliably welding the intersection points of filaments constituting a net member serving as a wig base.

[1 Summary of the Invention] According to the present invention, the above object is achieved by deforming a flat net member made of synthetic fiber to have a convex curved surface that conforms to the shape of the head of a wig user, In a method for forming a net base for a wig that maintains its shape, the net member is held in a mold having a convex curved surface, a solvent solution of the synthetic fiber is applied to the net member, and the net member is By welding the intersection points of the constituent fibers, it is formed so as to maintain the net shape of the head-shaped curved surface.

According to this invention, while a flat net member is held in a head-shaped mold, it is dipped in a solvent solution that dissolves the net member made of synthetic fibers or applied with a brush or the like, and finally dried. The intersection points of the fibers constituting the net member are welded together through a fairly simple process of simply bending the fibers, and the intersection points exhibit a bulging state after welding, so that the net member constituting the wig base is The welded state is reliably maintained without each of the contact points separating, and the same convex curved state as that of the mold is maintained for a long period of time.

The mold used in carrying out the present invention is preferably a male head shape mold made of plaster or the like, which is directly molded from the wig user's own head, and a flat net member that will become the wig base is placed on top of this male head mold with wrinkles. It is expanded and held without twisting. In that case, a net or sheet may be interposed between the mold and the net member, if necessary, for absorbing, adhering to, or transmitting an excess amount of the solvent solution applied in the next step.

The net material for the wig base is mainly made of nylon, but polyether or polyester fibers may also be used.
Non-woven nets, lace-knitted nets, etc. are used. In addition, the mesh size of the net and the wire diameter of the filament are as follows:
It does not matter what type it is as long as it can be used as a wig base, but -a has a mesh size of 0.1 nun.
The wire diameter is in the range of 20 μm to 2IIIL11.

When welding each intersection point of the filaments that make up the net, reliable welding can be achieved without weakening the net by simply applying a solution that has the ability to dissolve the filaments by coating or dipping. According to the present invention, it has been found that

In general, applying a solution capable of dissolving filaments to the filaments would dissolve the entire filament and weaken the net. However, surprisingly, the present inventor found that only each intersection point of the filament was welded,
The inventors have discovered that the filament between adjacent intersection points can be prevented from becoming thinner, and have arrived at the present invention. Furthermore, there is evidence that the melted material is adhering to the contact point, creating a bulging state, and although the mechanism is unclear, it appears to be more than just dissolution.

Examples of solvent solutions that can be applied in the present invention include formic acid.

Phenolic hydrocarbons, benzine alcohol, dichlorophenol, calcium chloride methanol solution, etc. are used. Also - water as a fishing solvent.

Hydrocarbons, halogenated hydrocarbons, alcohols, etc. may also be used.

The concentration of the above solution should be such that reliable welding can be obtained without weakening the filament due to dissolution, and it depends on the filament material, thickness, application time, etc.
It depends on the environmental temperature, etc., and although the range cannot be generally limited, it can be determined by actual testing.

After applying the above solution, excess solution is absorbed by the sheet or net stretched under the net member.

Can be removed by adhesion or permeation,
Alternatively, it may be removed by adding a drying step at room temperature or by heating, or may be further removed by a method such as rinsing.

〔Example〕

The method of the present invention will be explained below by taking as examples some net members commonly used as nets for wig bases.

First, in order to manufacture a wig that accurately matches the head shape of the wig user, a male head shape that reproduces the user's own head shape is created using plaster or the like using a known method. A flat net member is held stretched over this in a wrinkle-free state. At that time, it is convenient to mark the size of the wig base required by the user on the male plaster cast.

Next, while the net member is stretched and held in the mold, a solvent solution adjusted to an appropriate concentration, such as formic acid or phenolic hydrocarbon, is applied to the part of the cough net member that should be connected to the wig base.
Apply benzine alcohol, chlorophenol, calcium chloride/methanol solution, etc. with a brush. At that time, the mold may be turned upside down and immersed in the solution.

Finally, by removing the excess of the applied solution and drying it while holding it in the mold, each intersection of the filaments that make up the Neyto member is reliably welded, and this welding allows the filaments to move along the mold. A net mold with a head-shaped curved surface is molded. Therefore, remove this net mold from the mold,
By cutting along the pre-marked lines, the wig base according to the present invention is completed.

Note that the drying may be performed by natural drying at room temperature without using a dryer.

In this example, as shown in Table 1 below, plain weave or lace net members made of nylon and polyester filaments are used, and the mesh size and filament wire diameter are varied. At the same time, the quality of the welded state of the filament junctions was tested by applying solvent solutions having the ability to dissolve these filaments at various concentrations.

As a result, even when the type and concentration of the solution was varied, the intersection points of all filaments were successfully welded, and the surface of the filament other than the intersection points remained almost unchanged, with no thinning or weakening occurring. Figure 1 (A) is a micrograph (75x magnification) of a plain-woven nylon net filament junction welded according to test number 3 in Table 1 above. B)
shows a state in which the filament junctions welded in this manner are forcibly peeled off. On the other hand, Fig. 2 (A),
(B) shows a similar plain woven nylon net before welding. As is clear from comparing these photos, there are 61 points of intersection for each filament in Figure 1!
It can be seen that it has actually dissolved and is in a bulging state.

Then, the filaments of the net member are welded while fixed to the mold and maintained in a curved state, so that the completed wig heath after molding maintains its curved state well and lasts for a long time. An excellent net base that does not lose its shape over time was obtained.

〔Effect of the invention〕

As described above, according to the present invention, a substantially flat net member made of synthetic fiber is fixedly held in a mold having a curved head shape, and the solvent solution is applied to the net member. By welding the intersections of the filaments that make up the wig, we obtain a wig net base with a curved shape that matches the mold, so the intersections of the net members can be welded very easily and reliably, and there is no need for cough welding. As a result, the desired curved head shape can be maintained for a long period of time.

In addition, simply gluing the filament junctions of the net base would cause fraying at the periphery of the base, so conventionally it was necessary to fix edging ribbons, etc. to the periphery, but with the present invention, the filament junctions are firmly attached to each other. Since the material is welded to the surface, it is not necessary to take such reinforcing measures.

Thus, according to the present invention, each junction of the filaments is reliably welded while maintaining the curved shape of the head, thereby forming a net base having a curved shape that matches the shape of the wig user's own head. This makes it possible to manufacture wig bases extremely easily and at low cost.

[Brief explanation of the drawing]

Figure 1 (A) is a micrograph (75x magnification) showing the state in which the filament junctions constituting the net base are welded by the method of the present invention, and Figure 1 (B) is the filament junction of Figure 1 (A). A micrograph showing the state in which the points were forcibly peeled off (
(magnification: 75 times). Figure 2 (A) is a micrograph (magnification: 7
(B) is a micrograph (magnification: 75 times) of filaments obtained by unraveling the plain weave net. Patent applicant: Azorance Co., Ltd. Agent; Patent attorney Kodo Hirayama; Patent attorney Tamotsu Kaizu (Figure 1 CB) ,,:=,. Procedural amendment filed on September 30, 1986, Director General of the Patent Office, Yoshi 1) Moon Takeshi: Indication of the case, 1988 Patent Application No. 163673 2, Title of invention: Net-based forming method for wigs 3, Amendment Patent applicant address: 1-6-3 Shinjuku, Shinjuku-ku, Tokyo Name: Azorance 4 Co., Ltd. Agent address: Showa 6, 4-30-23 Yotsuya, Shinjuku-ku, Tokyo 160
September 7, 1983 (all sending date: September 27, 1988) Column 7 of "Brief explanation of drawings" of the specification subject to amendment, Contents of amendment (1) Page 13 of the specification 2 lines of ``micrograph showing''
Corrected to ``Microphotograph of the shape of the fibers shown.'' (2) The same book, No. 13, line 4, “showing microscope @ mirror photo” (3
) In the same book, page 13, line 6, "Microphotograph showing" is corrected to "Microphotograph showing the shape of fibers." (4) In the same book, page 13, line 8, "micrograph of filament" is corrected to "micrograph of fiber shape."

Claims (1)

[Claims] (1) A method for forming a net base for a wig, in which a flat net member made of synthetic fibers is deformed to have a convex curved surface that follows the shape of the head of the wig user, and the shape is maintained. The flat net member is held in a mold having a convex curved surface, a solvent solution of the synthetic fiber is applied to the net member, and the intersection points of the fibers constituting the net member are welded to form a head-shaped curve. A method for forming a net base for a wig, which is characterized by forming the net base so as to hold the net shape of the surface.