JP3389976B2 - Wig-based manufacturing method and manufacturing apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wig base and an apparatus for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a method for producing a wig base, a synthetic resin solution prepared by dissolving a synthetic resin or a thermoplastic resin in an organic solvent or the like is applied to a male mold and then dried to evaporate the organic solvent or the like. There is known a so-called casting method in which the steps of coating and drying are repeated to form a wig base having a desired thickness.

On the other hand, although not in the technical field of the wig base manufacturing method, as a method for molding a synthetic resin sheet into a specific shape, the synthetic resin sheet is heated and softened and then A blow molding method in which air is blown onto the sheet-like material to make it adhere to the molding die, or a vacuum molding method in which the synthetic resin sheet-like material is heated and softened and then vacuumed to bring the sheet-like material into close contact with the molding die is there.

Further, in Japanese Unexamined Patent Publication No. 4-298323, a plastic sheet is heated, compressed air is sent from below a porous mold, and compressed air is applied to the plastic sheet through the porous mold to pre-shape the sheet. The blow molding method described above and the vacuum molding method in which the mold is pushed up to spread the plastic sheet and then vacuum drawing is performed are disclosed as a series of steps.

[0005]

In the casting method in which the above synthetic resin solution is applied to the male-head type, air is easily entrained during the application or drying of the synthetic resin solution, and air bubbles are easily generated in the wig base. This causes a decrease in the strength of the wig base after molding, and there is a problem that the appearance is impaired by the inclusion of air bubbles. Furthermore, when using a male-head type, there are irregularities and slopes on the surface,
The applied synthetic resin solution was likely to be accumulated in the concave portions to increase the film thickness, and the synthetic resin solution was likely to flow down in the convex portions and the inclined portions to decrease the film thickness. And in the above casting method, in order to obtain a desired film thickness by one-time coating, it is possible to increase the concentration of the resin component of the synthetic resin solution or increase the coating amount per one time.
It is difficult to cause air bubbles to be mixed in the wig base or to cause variations in film thickness.In actual manufacturing of the wig base, lower the resin concentration of the synthetic resin solution, and apply and dry until the desired film thickness is achieved. However, there is a problem in that it takes a long time for the work. Further, in the case of the manufacturing method in which the synthetic resin solution is applied, the viscosity of the synthetic resin solution is likely to cause a difference in the film thickness of the wig base, and therefore the viscosity of the synthetic resin solution needs to be adjusted and skill is required.

On the other hand, in the blow molding method and the vacuum molding method, a female mold is generally used as a molding mold, whereas a male mold is generally used as a molding mold in general production of a wig base. Furthermore, since the male and female mold has irregularities and inclinations, which must be reproduced faithfully and have a uniform film thickness, conventional blow molding and vacuum molding methods cannot be used as they are for the production of wig bases. Have difficulty. Moreover, when the wig base is worn, the molded product itself needs to have a predetermined elasticity, for example, it is formed from a sheet-like material having a thickness of about 1 mm or less.
As shown in FIG. 12, when a sheet-like material S having a fixed periphery is heated by a heating device K, the sheet-like material S is bent by its own weight, and compressed air is sent to expand the sheet-shaped material S before it is preformed, and The bent sheet S has a problem that uneven heating occurs because the gap between the bent sheet S and the heating device K is partially different.

Therefore, an object of the present invention is to provide a wig base manufacturing method and a manufacturing apparatus for the wig base which can obtain a uniform film thickness and can be easily manufactured.

[0008]

According to a first aspect of the present invention, a sheet material for a wig base is placed in an upper opening of a molding chamber, and after heating and softening the sheet material while feeding compressed air into the molding chamber, Compressed air of a higher pressure is sent to inflate the sheet material, a molding die is inserted into the inflated sheet material, and air between these sheet materials and the molding die is sucked to bring the sheet material into close contact with the molding die. A wig-based manufacturing method characterized by the above.

According to a second aspect of the present invention, the sheet material for a wig base comprises a thermoplastic resin sheet serving as a wig base, and a thermoplastic resin sheet having a softening temperature lower than that of the sheet, which is releasably attached. The method for manufacturing a wig base according to claim 1, wherein the sheets are separated from each other after the adhesion.

A third aspect of the present invention is the method for producing a wig base according to the second aspect, wherein a polyurethane resin elastomer is used in the thermoplastic resin sheet which is the wig base.

According to a fourth aspect of the present invention, sheet material fixing means for fixing the sheet material for the wig base, which is formed by laminating different thermoplastic resin sheets in a peelable manner, to the upper opening of the molding chamber,
An air supply means for sending compressed air to the forming chamber, a suction means for sucking air in the forming chamber, a heating means for heating the sheet material, and an advancing / retreating means for advancing / retreating the forming die toward the fixed sheet material. And a wig-based manufacturing apparatus.

[0012]

According to the first aspect of the invention, the bending of the sheet material caused by heating and softening can be suppressed by sending compressed air into the molding chamber, and the sheet material can be heated uniformly. By inflating the sheet material with compressed air, the sheet material can be uniformly inflated without being partially expanded. Then, after the sheet material is inflated, a molding die is inserted into the sheet material and air between the sheet material and the molding die is sucked and brought into close contact with each other, so that the unevenness and the inclination of the molding die can be faithfully reproduced.

According to the second aspect of the present invention, the bending of the sheet material caused by heating and softening is suppressed by sending compressed air to the forming chamber, the sheet material can be uniformly heated, and the compressed air for expanding the sheet material. Since the wig does not directly contact the upper side of the wig base, the wig base sheet can be inflated uniformly without partially extending. Further, in the step of closely contacting the forming die with the sheet material, the forming die does not directly contact the sheet serving as the wig base, so even if the forming die has a convex portion and an inclined portion, these portions are extended more than necessary. The sheet thickness of the wig base sheet after molding can be made uniform, and after the sheet material is inflated, the molding die is inserted into the sheet material and air between the sheet material and the molding die is formed. Since it is suctioned and brought into close contact, the unevenness and inclination of the molding die can be faithfully reproduced. In particular, since the softening temperature of the thermoplastic resin sheet below the wig base thermoplastic resin sheet is low, in the step of closely adhering the sheet material to the molding die,
Even if the lower sheet stretches and the film thickness varies, the upper sheet is molded with a uniform film thickness, and since the wig base sheet does not come into direct contact with the molding die, it contacts the molding die and is rapidly cooled. And the quality of the wig base sheet is stable.

According to the third aspect of the invention, the polyurethane resin elastomer has a relatively low softening temperature, is easy to process, and has elasticity suitable as a wig base for the finished product, and is excellent in durability and light. Even when exposed to light, it does not discolor and has excellent light resistance.

In the structure of claim 4, the sheet material for the wig base is fixed to the upper opening of the molding chamber by the sheet fixing means, and the compressed air is sent into the molding chamber while heating the sheet material by the heating means, and the sheet is heated. The material is heated uniformly while suppressing the bending due to softening of the material, the uniformly heated sheet material is inflated by compressed air, the forming die is inserted into the inflated sheet material by the advancing / retreating means, and the sheet is vacuumed by the suction means. The sheet material can be closely attached to the mold.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 9 show a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a molding apparatus. Inside the molding apparatus 1, a substantially box-shaped molding chamber 2 is provided. A metal pedestal 4 is provided in the upper opening 3, and a metal sheet clamp 5 as a sheet material fixing means is rotatably connected to the rear side of the pedestal 4, and the seat clamp 5 is the pedestal 4 described above.
A holding frame portion 5A having substantially the same shape as that of the above, and an auxiliary base 6 is integrally provided from the rear side of the pedestal 4 to the outside, and a heating heater 8 serving as a heating means provided with wheels 7 serving as a moving means is provided with the auxiliary body. The table 6 and the sheet clamp 5 are movable. In the forming chamber 2, an elevating table 9 having substantially the same shape as the plane cross section of the forming chamber 2 is provided so as to be able to move up and down, and the wig base sheet larger than the upper opening 3 is provided in the upper opening 3 by the sheet clamp 5. With the material 10 fixed, the internal space 11 of the molding chamber 2 above the elevating table 9 is kept substantially sealed. It should be noted that, in this substantially sealed state, when the sheet material 10 is fixed by the sheet clamp 5, a slight amount of air leaks to the outside from the gap between the sheet material 10 and the sheet clamp 5, and the inner surface of the molding chamber 2 and the outer circumference of the lift 9 are lifted. The air is allowed to escape a little from the gap between and. Further, an air cylinder 12 as an advancing and retracting means is provided below the molding chamber 2, and a rod 12A of the air cylinder 12 is connected to the elevating table 9.
By the expansion and contraction of the rod 12A, the elevating table 9 advances and retreats toward the upper opening 3. A suction hole is provided in the center of the lifting table 9.
A suction hole 13 is bored, and this suction hole 13 is connected to a vacuum pump 16 serving as a suction means via a telescopic tube 14 and a suction tube 15. Further, an air supply hole 17 is formed on a side portion of the molding chamber 2, and the air supply hole 17 is a compressor 19 as an air supply means via an air supply pipe 18.
It is connected to the. Reference numeral 20 in the drawing denotes a molding die that is placed or fixed on the elevating table 9 and moves up and down together with the elevating table 9.

The sheet material 10 for the wig base (hereinafter referred to as the sheet material 10) is a thermoplastic resin sheet 21 (hereinafter referred to as a sheet) serving as a wig base as shown in FIG. 7 in this example.
21), an auxiliary thermoplastic resin sheet 22 (hereinafter referred to as an auxiliary sheet 22) having a softening temperature lower than that of the sheet 21 is releasably attached. It is preferable that the sheet 21 and the auxiliary sheet 22 are configured such that they can be adhered to each other by simply laminating and pasting without using an adhesive or the like, and can be peeled off. The seat 21 which is the wig base,
As the thermoplastic resin, a polyurethane resin elastomer, soft vinyl chloride or the like can be appropriately used, but the polyurethane resin elastomer is preferable from the viewpoint of durability, easiness of processing and flexibility of the resin. Further, as the auxiliary sheet 22, a thermoplastic resin sheet having a lower softening temperature than the sheet 21 is used, and in the present embodiment, since the polyurethane resin elastomer is used as the sheet 21 which becomes the wig base after molding, The auxiliary sheet 22 is preferably polyvinyl chloride, acrylic, polystyrene, a polyolefin-based resin, for example, polyethylene, polypropylene, etc. Among these, polyethylene, polypropylene is particularly preferable from the ductility of the resin when heat-softened. preferable.
Further, the film thickness of the auxiliary sheet 22 is preferably 0.4 mm (mm) or less in consideration of the molding accuracy of the wig base after molding, and the auxiliary sheet 22 may be transparent or translucent or colored. , The sheet material 10 to the molding die
If it is necessary for other steps to be performed after molding following 20.
It suffices that the production line 23 written on the molding die 20 is visible. Furthermore, as the molding die 20,
Use a plaster, thermosetting resin or wooden male head.

Next, the manufacturing method by the molding apparatus 1 using the sheet material 10 will be described. First, as shown in FIG. 2, the molding die is placed on the lift table 9 which is elevated to the position of the upper opening 3 by the air cylinder 12. Place 20 and air cylinder 12
Is operated to lower the molding die 20 as shown in FIG. Next, on the pedestal 4 of the molding apparatus 1, the sheet material 10 is arranged with the sheet 21 on the upper side, and when the sheet material 10 is heated, in order to prevent the excessive portion outside the sheet 21 from being softened by heating, A holding frame portion 5A having an opening having the same shape as the upper opening 3
The sheet material 10 is sandwiched and fixed by covering the sheet clamp 5 provided with, and the heater 8 is moved to an upper position of the sheet material 10 and heated. When the sheet material 10 is heated and begins to soften, as it is, the sheet material 10 is bent as shown in FIG. 12 of the prior art. However, in order to suppress the bending, when the sheet material 10 is heated, the compressor is compressed. The compressed air is gradually sent to the internal space 11 by operating 19 to hold the softened sheet material 10 by the air pressure in the internal space 11 so as not to shift from the position of the upper opening 3 as shown in FIG. After the sheet material 10 is heated and softened, the heating heater 8 is moved onto the auxiliary table 6, and as shown in FIG. 5, pre-forming for inflating the sheet material 10 by sending higher pressure compressed air to the internal space 11. I do. As for the extent to which the compressed air is supplied to inflate the sheet material 10, it is preferable that the bulge height H of the sheet material 10 is equal to or higher than the height of the molding die 20, as shown in FIG. Also, in the heating process and the inflating process,
Compressed air is not only at room temperature
50 ~ 80 ° C to prevent 10 from cooling and hardening
Compressed air that has been heated to some extent may be sent. Next, the air cylinder 12 is operated to raise the elevating table 9 so that the molding die 20 is pushed up and inserted into the bulged sheet material 10, and the vacuum pump 16 sucks the space between the sheet material 10 and the molding die 20. The air is evacuated to bring the sheet material 10 into close contact with the mold 20. When the molding die 20 is pushed up, the air in the internal space 11 is compressed as the lift 9 rises, and the sheet material 10 is inflated uniformly, and the air serves as a cushion, and when the molding die 20 is pushed up, the sheet material 10 is pushed up. The mold 20 is inserted into the bulged inside of the sheet material 10 without partially contacting the sheet material 10. The air between the sheet material 10 and the molding die 20 is sucked through the gap between the upper surface of the elevating table 9 and the lower surface of the molding die 20. For example, if the molding die 20 is a gypsum mold formed by pouring gypsum,
At the time of this molding, the plaster shrinks to naturally form irregularities (not shown) on the lower surface, so that air can be sucked through the gaps due to the irregularities. Then, the sheet material 10 is brought into close contact with the molding die 20 by evacuation and cooled to about room temperature, and then the sheet material 10
After releasing 10 and peeling off the sheets 21 and 22, or cooling to about room temperature, the sheet is kept in close contact with the forming die 20.
The sheet 21 may be peeled from the sheet 22. Further, in the case of further matting the surface of the upper surface of the sheet material 10, after adding a matting agent to a synthetic resin solution prepared by dissolving a synthetic resin or a thermoplastic resin in an appropriate organic solvent, after applying to the surface. ,
After drying to evaporate the organic solvent, the sheet material 10 is finally released from the molding die 20, the sheets 21 and 22 are separated from each other, and the sheet 21 is cut into a base shape of a wig and other wigs such as flocked hair are cut. Perform the manufacturing process. In order to further improve the strength of the wig base, as shown in FIGS. 8 and 9,
After molding a mesh net 24 made of synthetic resin, for example, a nylon net, it is stopped along the sheet 21 before release, and a synthetic resin solution in which a synthetic resin or a thermoplastic resin is appropriately dissolved in an organic solvent is applied and dried. Then, the organic solvent is dried to form a synthetic resin film 25 on the sheet 21, and finally the sheet material 10 is released from the molding die 20, and the sheets 21 and 22 are further separated.
The sheets 21 are separated from each other, and the sheet 21 is cut into a base shape of a wig, and another wig manufacturing process such as flocking is performed. As the resin of the synthetic resin solution applied in these cases, thermoplastic polyurethane is preferable, and as the organic solvent, DMF (dimethylformald) and MEK (methyl ethyl ketone) are preferable. Of course, the above-described matting process or the process of adhering the mesh net 24 is not performed, and after molding, from the molding die 20 to the sheet material.
It is also possible to release 10 and release the sheets 21 and 22 from each other, and process the sheet 21 as a wig base.

As described above, in this embodiment, the wig base sheet material 10 is provided with the upper opening 3 of the molding chamber 2 according to claim 1.
, The sheet material 10 is heated and softened while sending compressed air into the molding chamber 2, and then compressed air having a higher pressure is sent to inflate the sheet material 10, and the molding die 20 is blown into the expanded sheet material 10. Insert the sheet material 10 and the mold
Since it is a method of manufacturing a wig base characterized by sucking air between 20 and bringing the sheet material 10 into close contact with the molding die 20, conventionally, the bending of the sheet material 10 that occurs during heat softening,
This can be suppressed by sending air into the molding chamber 2, whereby the sheet material 10 can be uniformly heated, and the sheet material 10 is partially expanded by expanding the uniformly heated sheet material 10 with compressed air. Can be inflated uniformly without. In addition, after the sheet material 10 is inflated, the molding die 20 is inserted into the sheet material 10 so that the sheet material 10 and the molding die 20
Since the air between them is sucked and brought into close contact, the unevenness and inclination of the molding die 20 can be faithfully reproduced. Then, by changing the film thickness of the sheet 21 before molding, a wig base having a desired film thickness can be easily manufactured, and complicated operations such as conventional viscosity adjustment of the synthetic resin solution and coating and drying of the synthetic resin solution are performed. Is unnecessary, and the work time has been greatly shortened,
Further, skill in work is not required. Sheet material
By setting 22 to 0.4 mm or less, it is possible to obtain a good molding accuracy of the sheet 21 which is the wig base during molding.

As described above, in this embodiment, in accordance with the second aspect, the wig base sheet material 10 includes a thermoplastic resin sheet 21 serving as a wig base, and a thermoplastic resin having a softening temperature lower than that of the thermoplastic resin sheet 21. 2. The wig base manufacturing method according to claim 1, wherein the sheets 22 and 22 are peeled from each other, and the sheets 21 and 22 are peeled from each other after the adhesion, so that the conventional sheet produced during heating and softening. Deflection of the material 10 can be suppressed by sending air into the forming chamber 2, whereby the sheet material 10 can be heated uniformly, and the compressed air for inflating the sheet material 10 does not directly contact the sheet 21 side which is the wig base. The sheet 21, which is the base of the wig, can be inflated uniformly without partially expanding.
Further, in the step of closely adhering the molding die to the sheet material 10, since the molding die 20 does not directly contact the sheet 21 serving as the wig base, even if the molding die 20 has a convex portion and an inclined portion, these portions are It is possible to make the film thickness of the wig base sheet 21 after molding uniform without being unnecessarily extended, and to inflate the sheet material 10 and then insert the molding die 20 into the sheet material 10. Sheet material 10 and mold
Since air between 20 is sucked and brought into close contact, unevenness and inclination of the molding die 20 can be faithfully reproduced, and in particular, the softening temperature of the thermoplastic resin sheet 22 below the thermoplastic resin sheet 21 serving as the wig base is Since it is low, even if the lower sheet 22 extends and the film thickness varies in the step of bringing the sheet material 10 into close contact with the molding die 20, the upper sheet 21 is molded with a uniform film thickness, and the molding die 20 Since the sheet 21 serving as the wig base does not come into direct contact with the mold 20, the sheet 21 does not come into contact with the mold 20 and is not rapidly cooled, and stable quality of the sheet 21 serving as the wig base is obtained.

As described above, in this embodiment, in accordance with Claim 3, a polyurethane resin elastomer is used for the thermoplastic resin sheet 21 which becomes the wig base, and the method for manufacturing a wig base according to Claim 2. Therefore, polyurethane resin elastomer has a relatively low softening temperature, is easy to process, and has elasticity suitable as a wig base for the finished product, and it has excellent durability and discolors even when exposed to light. It is also excellent in light resistance.

As described above, in this embodiment, according to the fourth aspect, the wig base sheet material 10 in which different thermoplastic resin sheets 21 and 22 are releasably attached is fixed to the upper opening 3 of the molding chamber 2. A sheet clamp 5 as a sheet material fixing means, a compressor 19 as an air feeding means for sending compressed air into the forming chamber 2, a vacuum pump 16 as a suction means for sucking the air in the forming chamber 2, and a heating for heating the sheet material 10. A heater 8 as a means and a molding die toward the fixed sheet material 10.
Since it is a wig-based manufacturing apparatus characterized by including an air cylinder 12 that is a means for advancing and retracting 20
The sheet material 10 for the wig base is fixed to the upper opening 3 of the forming chamber 2 by the sheet clamp 5, and compressed air is sent to the forming chamber 2 while heating the sheet material 10 by the heater 8 to soften the sheet material 10. By uniformly heating while suppressing the deflection, the uniformly heated sheet material 10 is inflated by compressed air, the mold 20 is inserted into the inflated sheet material 10 by the air cylinder 12, and the vacuum pump 16 evacuates. The sheet material 10 can be brought into close contact with the molding die 20.

Further, as an effect of the embodiment, by forming the planer shape of the lift 9 substantially in the same shape as the forming chamber 2, the internal space 11 becomes substantially sealed while the sheet material 10 is fixed, and the lift 9 When is pushed up, the air in the internal space 11 is further compressed, and the sheet material 10 can be inflated uniformly. By adhering the reticulated net 24 to the sheet 21 via the synthetic resin film 25, the strength of the wig base manufactured using this sheet 21 can be improved, and in particular, the conventional net is coated with the synthetic resin solution. The workability can be greatly improved and the manufacturing time can be shortened as compared with the case of manufacturing the same.

FIG. 10 shows a second embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. An example in which a sheet material 10A for a wig is constituted by the thermoplastic resin sheet 21 of FIG.
Corresponding to the above, the wig base sheet material 10A composed of one thermoplastic resin sheet 21 is provided with the upper opening 3 of the molding chamber 2.
, The sheet 21 is heated and softened while sending compressed air into the molding chamber 2, and compressed air having a higher pressure is sent to inflate the sheet 21, and the molding die 20 is inserted into the expanded sheet 21. Since the method for manufacturing a wig base is characterized in that the air between the sheet material 10A and the molding die 20 is sucked to bring the sheet 21 into close contact with the molding die 20, the conventional bending of the sheet 21 caused by heating and softening is prevented. , It can be suppressed by sending air into the molding chamber 2, and thus the sheet
21 can be uniformly heated, and by inflating the uniformly heated sheet 21 with compressed air, the sheet 21 can be uniformly inflated without partially extending, and the sheet 21 is inflated and then the sheet 21 is inflated. Since the molding die 20 is inserted into the sheet 21 and the air between the sheet 21 and the molding die 20 is sucked and brought into close contact with each other, unevenness and inclination of the molding die 20 can be faithfully reproduced. It has the same operation and effect as the first embodiment.

FIG. 11 shows a third embodiment of the present invention, in which the same parts as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. The sheet material 10B for a wig of this example comprises a thermoplastic resin sheet 21 made of a polyurethane resin elastomer, and an auxiliary thermoplastic resin sheet 22A, 22 made of polyethylene or polypropylene having a softening temperature lower than that of the thermoplastic resin sheet 21.
B is laminated, and at least the sheets 21 and 22A are releasably attached to each other. Also in this example, considering the molding accuracy of the wig base sheet 21, the total thickness of the auxiliary thermoplastic resin sheets 22A and 22B is 0.4.
The thickness is preferably less than or equal to mm, and in this example as well, by using the wig base sheet material 10B having a three-layer structure, the same operation and effect as those of the first embodiment can be obtained corresponding to claims 1 to 4.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the molding apparatus is limited to that described in the embodiments. However, the advancing / retreating means uses a hydraulic cylinder or a motor as a drive source, or the air feeding means is constituted by one pump, and the pump is switched between air feeding and suction operation. Various modifications, such as making it possible, are possible. Further, in the embodiment, after the sheet material 10 is molded following the molding die 20, an example of performing the matting process on the sheet 21 is shown, but the surface of the sheet 21 before molding may be subjected to the matting process in advance. .

[0027]

According to the first aspect of the present invention, the sheet material for the wig base is arranged in the upper opening of the molding chamber, and the sheet material is heated and softened while feeding compressed air into the molding chamber, and then the pressure is higher than that. Characterized by injecting compressed air to inflate the sheet material, inserting a forming die into the inflated sheet material, and sucking air between the sheet material and the forming die to bring the sheet material into close contact with the forming die. It is a method for manufacturing a wig base that provides a uniform film thickness and is easy to manufacture.

According to a second aspect of the present invention, the wig base sheet material comprises a thermoplastic resin sheet serving as a wig base, and a thermoplastic resin sheet having a softening temperature lower than that of the sheet, which is releasably attached. The method of manufacturing a wig base according to claim 1, wherein the sheets are separated from each other after the adhesion, and a method of manufacturing a wig base that can obtain a uniform film thickness and is easy to manufacture. it can.

The invention of claim 3 is a method of manufacturing a wig base according to claim 2, wherein a polyurethane resin elastomer is used in the thermoplastic resin sheet which is the wig base, and a uniform film thickness is obtained. It is possible to provide a wig-based manufacturing method that is easy to manufacture.

According to a fourth aspect of the present invention, sheet material fixing means for fixing a sheet material for a wig base, which is formed by laminating different thermoplastic resin sheets in a peelable manner, to the upper opening of the molding chamber,
An air supply means for sending compressed air to the forming chamber, a suction means for sucking air in the forming chamber, a heating means for heating the sheet material, and an advancing / retreating means for advancing / retreating the forming die toward the fixed sheet material. It is a wig-based manufacturing apparatus that is characterized by including: and a wig-based manufacturing apparatus that can obtain a uniform film thickness and is easy to manufacture.

[Brief description of drawings]

FIG. 1 is a perspective view of a molding apparatus showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the molding apparatus showing the first embodiment of the present invention.

FIG. 3 is a perspective view of a sheet material and a molding apparatus showing a first embodiment of the present invention.

FIG. 4 is a cross-sectional view of the molding chamber in the heat-softened state of the sheet material showing the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of the molding chamber in a state where the sheet material according to the first embodiment of the present invention is inflated.

FIG. 6 is a cross-sectional view of the molding chamber in a state in which the molding die according to the first embodiment of the present invention is lifted and evacuated.

FIG. 7 is an enlarged cross-sectional view of the sheet material showing the first embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view of a sheet material provided with a mesh net according to the first embodiment of the present invention.

FIG. 9 is an enlarged plan view of the top surface of a sheet material provided with a mesh net showing the first embodiment of the present invention.

FIG. 10 is an enlarged sectional view of a sheet material showing a second embodiment of the present invention.

FIG. 11 is an enlarged sectional view of a sheet material showing a third embodiment of the present invention.

FIG. 12 is a cross-sectional view of a sheet-shaped product in a heat-softened state showing a conventional example.

[Explanation of symbols]

1 molding equipment 2 molding room 3 Upper opening 5 Sheet clamp (sheet material fixing means) 8 Heater (heating means) 10 10A 10B Sheet material for wig base 12 Air cylinder (advancing / retreating means) 16 Vacuum pump (suction means) 17 Compressor (air supply means) 20 Mold 21 Thermoplastic resin sheet 22 22A 22B Thermoplastic resin sheet

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 4-298323 (JP, A) JP 62-257826 (JP, A) JP 6-234025 (JP, A) JP 52-2 148358 (JP, A) JP-A 1-132807 (JP, A) JP-A 2-200806 (JP, A) Actual Kaihei 5-18824 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A41G 3/00

Claims (4)

(57) [Claims] 1. A sheet material for a wig base is arranged in an upper opening of a forming chamber, the sheet material is heated and softened while sending compressed air into the forming chamber, and then compressed air having a higher pressure is sent to the sheet. A method for manufacturing a wig base, comprising inflating a material, inserting a molding die into the inflated sheet material, and sucking air between the sheet material and the molding die to bring the sheet material into close contact with the molding die. 2. The wig base sheet material comprises a thermoplastic resin sheet serving as a wig base, and a thermoplastic resin sheet having a softening temperature lower than that of the sheet, which is releasably adhered to the wig base sheet. The method for manufacturing a wig base according to claim 1, wherein the sheets are separated from each other. 3. The method for producing a wig base according to claim 2, wherein a polyurethane resin elastomer is used for the thermoplastic resin sheet which becomes the wig base. 4. A sheet material fixing means for fixing a sheet material for a wig base, which is formed by laminating different thermoplastic resin sheets in a peelable manner, to an upper opening of a molding chamber, and an air feeding means for feeding compressed air to the molding chamber. A wig base characterized by comprising: suction means for sucking air in the molding chamber; heating means for heating the sheet material; and advancing / retreating means for advancing / retreating a molding die toward the fixed sheet material. apparatus.