JPH08299890A - Production of flocked processed article - Google Patents

Abstract

PURPOSE: To simply produce a flocked processed article having a desired shape by specifying the physical properties of staple fibers and a flocked base material in a process forming an adhesive layer to the outer peripheral surface of a cylindrical base material covering a core article and electrostatically flocking staple fibers to form a cylindrical flocked base material and extracting the core article to cover a core member having a desired shape with the cylindrical flocked base material. CONSTITUTION: When a flocked processed article is produced, at first, a cylindrical or columnar core article is covered with a cylindrical base material in a step SP1 and the pretreatment of the cylindrical base material is performed in a step SP2 and an adhesive is applied to the outer peripheral surface of the cylindrical base material in a step SP3. Next, staple fibers with a diameter of 1-100μm and a length of 0.1-10mm are electrostatically flocked on the adhesive layer of the cylindrical base material in a step SP4 to form a cylindrical flocked base material with flocking density of 5000-200000/cm<2> and the adhesive is dried in a step SP5. Subsequently, the cylindrical flocked base material is extracted from the core article in a step SP6 and a core member having a desired shape is covered with the cylindrical flocked base material in a step SP7 to obtain the objective flocked processed article having a desired shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a flocked body, and more specifically, a flocking process in which an electrostatic flocked layer of short fibers is formed so as to cover an outer peripheral surface of a core body having a desired shape. A method for manufacturing a body.

[0002]

2. Description of the Related Art Conventionally, a flocked body formed by forming an electrostatic flocked body so as to cover an outer peripheral surface of a core body having a desired shape has been adopted in various fields. Then, as a method for producing such a flocked body, conventionally, (1) an adhesive agent is applied to the outer peripheral surface of the flocked body having a desired shape to form an adhesive layer,
A method in which short fibers are electrostatically flocked to this adhesive layer and the adhesive is dried, and (2) short fibers are electrostatically flocked to the heat-sensitive adhesive layer to form a cylindrical flocked sheet. A method for integrating a flocked sheet with a tubular member by externally or internally inserting the tubular member and heat-welding a heat-sensitive adhesive layer to the tubular member (see Japanese Patent Laid-Open No. 62-204880).
Is proposed.

[0003]

When the method of (1) above is employed to produce a flocked body, application of an adhesive,
A jig for gripping or transferring the body to be planted is required for each step of electrostatic flocking and drying. Then, as the hair transplanted body, a large one such as a chair or a handrail of a bed, or a large one such as a metal roll requires a large jig, which increases the cost.
There is an inconvenience that the time required for each of the above steps becomes long.

When the method of (2) is used to manufacture a flocked body, the shape of the cylindrical flocked sheet must be matched with the shape of the cylindrical member. Therefore, it is extremely difficult or impossible to adapt it to a cylindrical body whose outer diameter changes depending on the location, and there is a disadvantage that the types of electrostatic flocking bodies that can be manufactured are greatly limited.

[0005] Generally, when electrostatic flocking is performed on a flocked body (adhesive layer), the flocked basis weight is approximately 100 to 150 g / m regardless of the thickness and length of the short flocked fibers. Known to be ² . Therefore, when the length of the flocked short fibers is long, the flocked density is reduced. When the flocked density is reduced, the appearance quality of the flocked processed body is reduced, and the feel when touched by the hand is also reduced. Specifically, 3 denier (diameter is 19.3 μm),
Nylon short fibers with a length of 1 to 2 mm are densely packed (for example,
It is extremely difficult to transplant hair at 50,000 to 100,000 strands / cm ² . Therefore, it is extremely difficult to produce a sufficiently high-quality flocked body.

Furthermore, whichever method is adopted,
Since the hair-transplanted body and the electrostatic hair-transplanted body are integrated,
If it becomes worn, dirty, or damaged, it is not possible to easily replace only the electrostatic flocked body, and the flocked body is inevitably discarded, so the flocked body itself has no defects. Nevertheless, it will be discarded.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for manufacturing a hair-implanted body capable of easily manufacturing a hair-implanted body having a desired shape. .

[0008]

In order to achieve the above-mentioned object, a method for manufacturing a flocked body according to claim 1 is such that a cylindrical base material is covered with a core, and the outer periphery of the cylindrical base material is covered. After forming an adhesive layer on the surface, short fibers having a fiber diameter of 1 to 100 μm and a fiber length of 0.1 to 10 mm are electrostatically flocked on the adhesive layer to give a flocking density of 5,000 to 200,000. After forming a tubular flocked base material of the number of pieces / cm ² and then removing the tubular flocked base material from the core, the tubular flocked material is formed so that the flocked surface of the tubular flocked base material is on the outside. In this method, a flocked base material is covered on a core body having a desired shape to form a flocked body having a desired shape.

In the method for producing a flocked body according to a second aspect, a heat-shrinkable material is used as the tubular base material,
In this method, the tubular flocked base material is brought into close contact with the core body by covering the core body with the heat-shrinkable material and then subjecting the core body to a heat-shrinking treatment. The method for manufacturing a flocked body according to claim 3 is a method of using a heat-shrinkable film as the heat-shrinkable material.

In the method for producing a flocked body according to a fourth aspect of the present invention, the tubular base material is made of a stretchable material, and the core body is covered with the stretchable material. It is a method of bringing the tubular flocked base material into close contact with the core body by stretchability. The method for producing a flocked body according to claim 5 is a method in which any of rubber, soft vinyl chloride, and a stretchable elastomer is adopted as the stretchable material.

A method for manufacturing a flocked body according to claim 6 is a method in which a knitted fabric is adopted as the elastic material. Claim 7
The method for manufacturing the flocked body is a method in which a fiber material using elastic yarn is adopted as the elastic material. 9. The method for manufacturing a flocked body according to claim 8, wherein a cylindrical base material is used as the tubular base material, a columnar material is used as the core material, and the core body is linear or curved at a predetermined position. This is a method of adopting a columnar shape or a cylindrical shape that is formed and setting the diameter of the core to be larger than that of the core.

[0012]

According to the method for producing a flocked body of claim 1, the tubular base material is covered on the core, and the adhesive layer is formed on the outer peripheral surface of the tubular base material. The layer has a fiber diameter of 1 to 100
Electrostatic flocking of short fibers having a fiber length of 0.1 to 10 mm and a flocking density of 5,000 to 200,000 fibers / cm ² to form a tubular flocking base material, and then from the core. After pulling out the tubular flocked base material, the tubular flocked base material is covered with a core body of a desired shape so that the flocked surface of the tubular flocked base material is on the outside, thereby forming a flocked body of a desired shape. Therefore, it is possible to significantly reduce the steps that require the operation of gripping or conveying the core body, and even if the core body is large or heavy, the cost is reduced and the efficiency of manufacturing the flocked body is improved. Can be achieved. Further, since the core body is simply covered with the tubular flocked base material, the flocked body becomes dirty,
In the case where it is worn or damaged, it is possible to easily replace only the tubular flocked base material, and it is possible to prevent the inconvenience of wasting the core body.

In the method for manufacturing a flocked body according to claim 2, a heat-shrinkable material is used as the tubular base material, and the core body is covered with the heat-shrinkable material, and then heat-treated. Since the tubular flocked base material is brought into close contact with the core body by performing the shrinking treatment, the tubular base material can be brought into good contact with the core body having a desired shape, and at the same time, the tubular base material is provided. It is possible to increase the hair transplant density by contracting, and to achieve the same effect as in claim 1.

According to the method for manufacturing a flocked body of claim 3, since the heat-shrinkable film is used as the heat-shrinkable material, the same effect as that of the second aspect can be achieved. According to the method for manufacturing a hair-implanted body of claim 4,
The tubular base material is made of a stretchable material, and after covering the core body with the stretchable material, the core body is provided with the tubular flocked base material due to the stretchability of the stretchable material. Since they are brought into close contact with each other, heat shrinking treatment is not required as compared with claim 2, and the tubular substrate can be satisfactorily brought into close contact with the core body having a desired shape. In addition to being able to increase the flocking density, it is possible to achieve the same effect as in claim 1.

In the method of manufacturing a flocked body according to claim 5, the elastic material is rubber, soft vinyl chloride,
Since either of the stretchable elastomers is adopted,
It is possible to achieve the same effect as in claim 4. According to the method for manufacturing a flocked body of claim 6, since a knitted fabric is used as the elastic material, the same effect as that of claim 4 can be achieved.

According to the method of manufacturing a flocked body of claim 7, since the fiber material using elastic yarn is adopted as the elastic material, the same effect as that of claim 4 can be achieved. . According to the method of manufacturing a flocked body of claim 8, a cylindrical base material is used as the tubular base material, a cylindrical material is used as the core material, and a linear or predetermined position is used as the core body. The columnar or cylindrical shape which is curved by means of is adopted, and the diameter of the core is set to be larger than that of the core.
It is possible to achieve the same effect as any of the above.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 is a flow chart for explaining an embodiment of the method for manufacturing a hair-implanted body of the present invention. In step SP1, the tubular base material is covered with a tubular or columnar core, pretreatment of the tubular base material is performed in step SP2, and an adhesive is applied to the outer peripheral surface of the tubular base material in step SP3. In SP4, short fibers are electrostatically flocked on the adhesive layer formed on the outer peripheral surface of the tubular base material, the adhesive is dried in step SP5, and in step SP6, the outer peripheral surface is electrostatically flocked. The flocked base material is extracted from the core, and in step SP7, the tubular flocked base material is covered on the core body of a desired shape to obtain a flocked body of a desired shape. When a heat-shrinkable tubular base material is used, the tubular material is heat-shrinked by heat treatment to obtain a flocked body having a desired shape.

Although various materials can be used as the tubular base material, those made of a heat-shrinkable material,
It is preferable to adopt a stretchable material. Here, the heat-shrinkable material can be exemplified by a heat-shrinkable film, and the stretchable material can be exemplified by soft vinyl chloride, stretchable elastomer, rubber, knitted fabric, fiber fabric using elastic yarn, non-woven fabric, and woven fabric. . Further, it is possible to adopt various materials as the core, but in view of gripping and carrying in the subsequent steps, the core is of the minimum size necessary for obtaining the final flocked body. In addition, it is preferable to be as light as possible.

The pretreatment in step SP2 includes a cleaning treatment, and a primer treatment and a masking treatment which are performed as needed. This cleaning process
This is done to prevent the adhesive strength of the adhesive from being reduced due to contamination of the outer peripheral surface of the tubular base material, and to prevent defects in the product due to the inclusion of foreign matter,
For example, it is performed by wiping with alcohol. However,
If the control of the cylindrical base material and process control are sufficiently performed and the occurrence of contamination on the outer peripheral surface of the cylindrical base material can be prevented,
The cleaning process can be omitted. The primer treatment is a treatment for strengthening the adhesive force, and is appropriately performed depending on the type of tubular substrate, the type of adhesive, the coating method, and the like. The masking process is a process for applying an adhesive to only a desired area, and is performed by covering a specific area where hair is not desired to be transplanted, for example.

The application of the adhesive in step SP3 is
It is carried out by a conventionally known method such as a spray method or a dip method. Examples of the adhesive include urethane emulsion, acrylic emulsion, vinyl acetate emulsion, styrene emulsion, and organic solvent adhesive. However, when a heat-shrinkable material or a stretchable material is used as the tubular substrate, it is preferable to use an adhesive that is soft in a dry state, for example, a urethane emulsion.

In the electrostatic flocking in step SP4, for example, a voltage of several kilovolts to several tens of kilovolts is applied to the electrode on the high voltage side by using the core as a ground electrode (earth electrode) to form a high voltage electric field. The short fiber having a fiber diameter of 1 to 100 μm and a fiber length of 0.1 to 10 mm is supplied to the space provided with, and the short fiber is caused to fly almost along the electric field to form an adhesive layer on the tubular substrate. It is carried out by piercing it. The flocking density in this case is 5,000.
It is 0 to 200,000 lines / cm ² . As a method for flying short fibers, an up method, a down method, and a side method are known, and any method may be appropriately selected. However, since the target of electrostatic flocking is a cylindrical base material, it is preferable to perform electrostatic flocking while rotating the cylindrical base material around the central axis, and it is possible to improve the processability and to Uniformity can be improved. Examples of short fibers include nylon fibers, cotton fibers, acrylic fibers, polyester fibers, rayon fibers, and aramid fibers.

The drying process in step SP5 can be accomplished by, for example, leaving the cylindrical base material on which electrostatic flocking has been performed in a high temperature atmosphere for a predetermined time, and the adhesive strength can be increased. Then, after the drying process is performed, the idle hair that has not been planted on the cylindrical base material during the electrostatic flocking is removed. This treatment can be performed, for example, by blowing air by ejecting air from the nozzle, washing with water, brushing the outer peripheral surface of the tubular base material, or the like.

Since the structure of the device for manufacturing the hair-implanted body is substantially the same as that of the conventionally known device for manufacturing a hair-implanted body, illustration and description thereof are omitted. As is clear from the above description, even if the core body is large and / or heavy, it is not necessary to grip and convey the core body until the processing of step SP7, so the manufacturing apparatus as a whole can be made compact and simple. In addition, it is possible to increase the transport speed of the tubular base material. Further, when the tubular flocked base material is covered with the core body, it is preferable to apply an adhesive, an adhesive or the like to the core body in advance. Can be prevented. However, it is not necessary to apply the adhesive, the pressure-sensitive adhesive or the like to the entire surface of the core body, and it is sufficient to apply it locally.

Further, in the processed flocked body manufactured as described above, the flocked base material is simply covered on the core body. Therefore, when the flocked base material is soiled, worn or damaged,
The core can be reused by removing the flocked base material and performing the process of the flowchart of FIG. 1 again. Furthermore, when a material made of a heat-shrinkable material or a material made of a stretchable material is used as the tubular base material, the adhesion between the flocked base material and the core can be improved, and the former For example, by shrinking the flocked base material, the flocked density can be increased to improve the quality of the flocked processed body, while in the latter case, the heat contraction treatment can be omitted. However, even in the latter case, the flock density can be increased by performing electrostatic flocking in the expanded state and then contracting and covering the core body.

Furthermore, even if the core body has a complicatedly curved or bent shape, it is not necessary to apply an adhesive to the surface of the core body, and a cylindrical base material having a simple shape can be used. Since it is only necessary to apply an adhesive to the outer peripheral surface and dry the adhesive layer after electrostatic flocking, a flocked body can be easily manufactured.

[0026]

SPECIFIC EXAMPLE A heat-shrinkable tube made of vinyl chloride (nominal diameter 30 mm, nominal thickness 0.5 mm) is used as the cylindrical substrate, and 3 denier (diameter is 19.
3 μm), 1 mm long nylon short fiber is adopted, urethane type emulsion is adopted as an adhesive, the drying condition is set to 70 ° C. for 30 minutes, and the heat shrinking treatment condition is 150
The hair-implanted body was manufactured by using hot air at 0 ° C., setting for 10 to 15 seconds, an iron array as a core, and an L-shaped handrail pipe having a diameter of 30 mm.

In this case, the flocking density for the tubular base material was about 35,000 fibers / cm ² , and since the surface area of the tubular base material was contracted by heat contraction, the flocking was performed. The bristle density of the processed body was about 70,000 / cm ² .

[0028]

According to the first aspect of the present invention, it is possible to greatly reduce the steps that require an operation of gripping or carrying a core body, and even if the core body is large or heavy,
It is possible to reduce the cost and improve the production efficiency of the flocked body, and since the core body is simply covered with the tubular flocked base material, the flocked body may become dirty, worn, or damaged. , You can easily replace only the tubular flock base,
The peculiar effect that the inconvenience that the core body is wasted can be prevented is exhibited.

According to the second aspect of the invention, the tubular substrate can be satisfactorily adhered to the core body having a desired shape, and
In addition to the fact that the bristle density can be increased by shrinking the tubular base material, the same effect as in claim 1 can be obtained. The invention of claim 3 has the same effect as that of claim 2. The invention of claim 4 eliminates the need for heat shrinking treatment as compared with claim 2, allows the tubular base material to be closely adhered to the core body having a desired shape, and shrinks the tubular base material. With this, the hair transplant density can be increased, and the same effect as in claim 1 can be obtained.

The invention of claim 5 has the same effect as that of claim 4. The invention of claim 6 has the same effect as that of claim 4. The invention of claim 7 has the same effect as that of claim 4. The invention of claim 8 has the same effect as that of either claim 2 or claim 3.

[Brief description of drawings]

FIG. 1 is a flow chart for explaining an embodiment of a method for manufacturing a flocked body of the present invention.

Claims (8)

[Claims] 1. A base material on a tube is covered with a tubular base material on a core.
After forming the adhesive layer on the outer peripheral surface of the material,
Fiber diameter is 1 to 100 μm, fiber length is short from 0.1 to 10 mm
Electrostatic flocking of fibers results in flocking density of 5,000 to 200,0
00 / cm ²Forming a tubular flocked base material of
After removing the tubular flocking base material from the core, the tubular flocking is performed.
Desirable tubular flocked substrate so that the flocked surface of the substrate is on the outside
Cover the core of a desired shape to form a flocked body of the desired shape.
A method for producing a flocked body, the method comprising: 2. The tubular base material is made of a heat-shrinkable material, and the core body is covered with the heat-shrinkable material and then subjected to a heat-shrinking treatment, whereby the core body is provided with the heat-shrinkable material. The method for producing a flocked body according to claim 1, wherein the flocked flock base is brought into close contact. 3. The method for producing a flocked body according to claim 2, wherein the heat-shrinkable material is a heat-shrinkable film. 4. The tubular base material is made of a stretchable material, and the core body is covered with the stretchable material, and then the stretchable material stretches so that the core body has the tubular shape. The method for manufacturing a flocked body according to claim 1, wherein the flocked base material is closely attached. 5. The method for producing a flocked body according to claim 4, wherein the elastic material is any one of rubber, soft vinyl chloride and elastic elastomer. 6. The method for manufacturing a flocked body according to claim 4, wherein the elastic material is a knitted fabric. 7. The method for producing a flocked body according to claim 4, wherein the elastic material is a fiber material using elastic yarn. 8. The cylindrical base material has a cylindrical shape, the core has a cylindrical shape, and the core has a linear or curved shape at a predetermined position. 4. The method for producing a flocked body according to claim 2, wherein the core has a larger diameter than the core.