JP2913264B2 - wig - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wig having a wig base made of a net material welded by using an ultrasonic welding apparatus for a wig base net. 2. Description of the Related Art Wigs using a net material as a wig base have advantages such as light weight and excellent air permeability, and various types of wigs have conventionally been used. Nylon is usually used as the net material, and various methods for manufacturing a wig base using such nylon fibers are known. Among them, for example, according to the method disclosed in Japanese Patent Application Laid-Open No. Sho 61-124615 by the present applicant, it has a contour and dimensions that precisely match the user's head shape and can be used for a long time. A wig base that can maintain good mold retention can be obtained. In this method, as shown in FIG. 2, a wig is first directly molded from a user's head and molded substantially in accordance with the contour and dimensions of the user's head shape. A wig base, that is, a net type, is manufactured using the substantially hemispherical male head-shaped mold 1. Here, an example of a method for forming the head-shaped male mold 1 will be described. First, a female mold conforming to the user's head shape is prepared. As the female material, a thermoplastic synthetic resin sheet, for example, a thin sheet of trans-type polyisoprene having a thickness of about 2 to 7 mm is preferably used. This female mold is pressed uniformly against the user's head in a state where the synthetic resin sheet is spread on the holding frame and softened by heating,
It is manufactured by removing the synthetic resin sheet from the user's head after it cools and hardens. [0005] Next, the support base 2 is inserted into the female mold, and at the same time, a molding material, for example, a gypsum slurry is poured into the female mold and hardened, and after the hardening, the female mold is removed to faithfully restore the user's head shape. The head-shaped male mold 1 described above is completed.
Next, first, for example, 0.3 m thick
m or thinner synthetic resin film 3 is coated over the entire surface. The synthetic resin film 3 is used to facilitate the peeling of the net mold from the head-shaped male mold 1 in a later step described later. Further, the head-shaped male mold 1 is entirely covered with an ultrathin first net 4 of an appropriate size, for example, a net having a small diameter mesh such as nylon stockings, from above the synthetic resin film 3. Is done. This first net 4
When resin processing by dipping the second net used in the next process for configuring the wig base,
This is used to prevent the resin film from being stretched in the mesh of the second net. Next, a second net 5 serving as a main material of the wig base is entirely coated on the head-shaped male mold 1 from above the first net 4. The second net 5 is formed by plain weaving the filaments of the course and the weft constituting the net at intervals so as to preferably have a rhombic mesh. The second net 5 may be formed by laminating two pieces in consideration of the durability of the wig base. Thus, the synthetic resin film 3 and the first
The net 4 and the second net 5 are sequentially coated so as not to cause wrinkles and slacks, and their edges are converged at the position of the support base 2 and fixed via a fixing member 6 such as a rubber ring or a string. Fixed. The second net may be coated on the head-shaped male mold 1 by simply weaving the filaments of the warp and weft up and down without plain weaving. Subsequently, the head-shaped male die 1 is immersed in a resin solution for coating processing, for example, a polyurethane resin liquid adjusted to an appropriate concentration with a diluent, while being fixed to a support table, or brushed. When the resin liquid is dried by applying the resin liquid by, for example,
Is temporarily formed in a state in which the shape of the head-shaped male mold 1, that is, the shape of the user's head is maintained. The temporarily formed second net 5 is peeled from the head-shaped male mold 1 via the above-mentioned synthetic resin film 3 for peeling, and thus,
The net type N molded into a shape that matches the shape of the user's head is obtained. Finally, the intersections of the filaments constituting the net type N obtained as described above are placed on the working surface of the ultrasonic welding device W as shown in FIG. Is done. [0010] The net type N thus obtained is durably held in a shape exactly matching the shape of the user's head, and thereafter cut into predetermined dimensions to complete the wig base net. However, in the above-described wig base manufacturing method, when the ultrasonic welding of the filament intersections is performed by the ultrasonic welding device W, the ultrasonic welding device W is used. Since the work surface on which the net type N is placed is mirror-finished,
That is, the ultrasonically welded portion of each filament outer surface is
Since it is once melted and solidified again during welding, it becomes smooth according to the working surface of the ultrasonic welding device W, and when a wig is manufactured using this net type N, the above smoothed portion becomes Since the net base is received and reflected, the net base is conspicuous through the hair split portion and the gap between the hairs, and the fact that the wig is used may be easily recognized by a third party. In view of the above, the present invention does not smooth out the welded portion of the outer surface of each net-shaped filament at the time of ultrasonic welding, and each intersection and the outer surface of the filament have a fine uneven shape. It is an object to provide a wig having a wig base net formed as described above. [0013] In order to achieve the above object, a wig according to the present invention comprises a wig base having an outwardly bulging shape and a plurality of hairs implanted in the wig base. At least a part of the wig base is configured as a net base by arranging the warp and weft filaments vertically and horizontally, and the intersections of the warp and weft filaments constituting the net base are welded, and Matte outer surface of welded filament
With a fine uneven shape for the purpose . According to the present invention, since the working surface of the ultrasonic welding device has fine irregularities formed by rough surface finishing,
When ultrasonically welding the intersections of the filaments of the wig base net, when the outer surfaces of the respective filaments constituting the net are once melted by ultrasonic welding, the surface roughness conforms to the work surface formed on the rough surface. Take a shape with
Even if the ultrasonically welded portion of the outer surface of the filament on the outside of the wig base net receives light, this light is diffusely reflected, and the unique surface gloss of synthetic fiber is obtained. The use of the wig is therefore not easily known to a third party. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. FIG. 1 shows an embodiment of an ultrasonic welding device for a wig base net used in the present invention. This ultrasonic welding device 10 includes a main body 11 configured in the same manner as a conventional ultrasonic welding device. And a work plate 13 on a work table 12 of the main body 11. The work plate 13 may be formed integrally with the work table, but is preferably mounted separately and replaceably. The work surface 13, for example an iron plate, a stainless (SUS 304) plate, or made of a plate material of hard material titanium alloy or the like, the surface 13a is R _Z (ten-point average roughness) thereof as work surface = 15 to 1
20 μm surface roughness (JISB0601, ie, ISO
R468), for example, by blasting by spraying alumina powder. Here, the upper limit of R _Z , that is, R _Z = 120 μm
In the case of exceeding, the surface roughness of the surface 13a of the working plate 13 due to the blasting is too rough, so that the irregularities of the surface 13a of the working plate 13 bite into the filament surface during the ultrasonic welding of the wig base net. As a result, the workability of ultrasonic welding is reduced, and the strength of the filament itself is reduced, so that the filament is easily cut. If the lower limit of R _Z , ie, R _Z = 15 μm or less, the surface roughness of the surface 13a by blasting is too fine, so that the welded portion of the wig base net generated at the time of ultrasonic welding is not smoothed. Is not performed effectively, so that the matting becomes insufficient, and the reflection of light by the welded portion of the wig base net can hardly be prevented. Thus, as a result of conducting various experiments by the present inventors, considering both the workability of the ultrasonic welding of the wig base net and the non-smoothing of the ultrasonic welded portion, R
It has been confirmed that a surface roughness of _Z = 80 μm is most effective in achieving the matting effect. The maximum height R _max , the ten-point average height R _Z , and the center line average height R _a according to the size of the powder material for processing used in the blast processing.
Is as follows. (1) For 120 μm powder, R _max = 200 μm R _Z = 120 μm _Ra = 11 to 20 μm (2) For 15 μm powder, R _max = 25 μm R _Z = 15 μm _Ra = 1 (3) In the case of a powder of 80 μm, R _max = 115 μm R _Z = 80 μm _Ra = 13 to 16 μm The embodiment of the ultrasonic welding apparatus used in the present invention is as described above. The wig base net N
In the case of ultrasonic welding, the ultrasonic welding device 1 is used as shown in the figure.
0 on the work plate 13 attached on the work table 12
If the wig base net N is placed and a desired ultrasonic welding operation is performed, while the intersections of the filaments are welded,
At the same time, the outer surface of the filament of the net type N is once melted and is made non-smooth in accordance with the shape of the blasted surface 13a of the work plate 13, that is, fine irregularities are given and solidified as it is to finish the rough surface. Is done. In the wig base net thus ultrasonically welded, since the welded portion is not smoothed by the ultrasonic welding, when the wig is manufactured using this wig base net, the net base of the wig is formed. The ultrasonically welded portions of the filament outer surface do not reflect light and are therefore sufficiently matte. The wig net base that can be used in the present invention uses synthetic fibers, preferably nylon monofilaments, which are arranged vertically and horizontally at intervals so as to have a net. In this case, a plain-woven filament is convenient, but a filament obtained by simply superposing the filaments of the course and the weft on top and bottom may be used. Although not shown, the wig of the present invention is formed by implanting a plurality of hairs on an outer surface of the wig base having at least a part of such a net base. The rough surface finishing work of the net type N is convenient if it is carried out simultaneously with the ultrasonic welding of the filament contact points after the temporary molding of the net type N by immersion in a resin. For example, output 450-2000W
The horn diameter is 20-50mm and the horn pressure is 1.5-
6.0 kg / cm ² , horn pressure time 0.2-0.8
Set to seconds. At that time, the net type N after ultrasonic processing
The smaller the horn diameter is, the more it is necessary to maintain the accurate head shape, but the larger the horn is, the better the work efficiency is. Therefore, from the above, a more preferable horn diameter is 30 to 50 mm. The output of the ultrasonic welding device is almost set according to the determined horn diameter, but if the output is too small, the welding of the filament junction will be incomplete.If the output is too large, the strength of the nylon filament after ultrasonic processing will be reduced. The horn pressure and the horn pressure time also affect the welding strength and the nylon filament strength. Therefore, as a result of experiments conducted by the present inventors together with the above points, the horn has a horn diameter of 30 to 50 mm, a horn output of 600 to 1800 W, and a horn pressure of 2.0 to 5.0 kg as described above. / Cm ² and horn pressure time 0.2
If the welding operation is performed by using an ultrasonic welding apparatus set to 0.6 seconds and setting the working surface 13a to the above-described surface roughness, the welding of the filament intersection and the good rough surface of the filament outer surface can be performed. It turned out that finishing was possible. The work plate 13 is desirably made of a material as hard as possible in terms of abrasion resistance, and is preferably made of stainless steel. However, other materials such as a titanium alloy can be used. It is. The ultrasonic welding apparatus used in the present invention can be widely applied to a wig base of a woven or non-woven fabric using a net material, and is limited to the wig base disclosed in Japanese Patent Application Laid-Open No. 61-124615 of the present applicant. Of course not. For example, when the wig base is constructed using a non-woven nylon net member as disclosed in U.S. Pat. Can be applied. It is needless to say that the present invention is not limited to the wig base constituted only by the net, but can be applied to a wig base having a net at least in a part thereof. It is preferable that the filament constituting the net is colored in the color of the scalp, because the filament becomes less noticeable together with the matting effect. As described above, according to the present invention, when the intersections of the filaments of the wig base net are ultrasonically welded, the outer surfaces of the respective filaments of the net are once melted by ultrasonic welding. Sometimes, the shape having surface roughness is taken according to the work surface being blasted and solidified in this state, so that the ultrasonically welded portion of the filament outer surface of the wig base net receives light and reflects. And therefore a sufficient matting effect is achieved, so that the use of the wig is not easily known to a third party.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view showing one embodiment of an ultrasonic welding device according to the present invention. FIG. 2 is an explanatory view of a general wig base manufacturing method. FIG. 3 is a schematic side view showing a conventional ultrasonic welding device for a wig base net. [Description of Signs] 10 Ultrasonic welding device 11 Main body 12 Work table 13 Work plate N Wig base net

Claims (1)

(57) [Claims] In a wig including a wig base having a shape bulging outward and a large number of hairs implanted in the wig base, at least a part of the wig base includes a warp filament and a weft filament arranged vertically and horizontally. It is composed as a base,
A wig characterized in that the intersection of the weft filaments is welded and the outer surface of the welded filament has fine irregularities for matting .