JPH0524053A - Manufacturing device for adhesive roll and manufacture thereof - Google Patents

Abstract

PURPOSE:To obviate the process of assembly and disassembly of a mold material, simplify the manufacturing process of an adhesive roll and improve productivity by releasing the adhesive roll together with a sheet-shaped body out of an opening of the mold material after molding an adhesive layer. CONSTITUTION:A mold material 3 is provided with a cylindrical body section 30 having its one end with a bottom section 31 and the other end with an opening 32, and the bottom section 31 and the body section 30 of said mold material 3 are formed integrally. Further the outer peripheral face of a body section 40 of the sheet-shaped body 4 and a bottom section 41 of the sheet-shaped body are disposed along the inner peripheral face of the body section 30 and the bottom section 31 of the mold material 3. A space 100 in which an adhesive material for forming an adhesive layer is filled is formed between the inner peripheral face of said sheet-shaped body 4 and the outer periphery of a core 5. Taper is formed on the inner peripheral face of the mold material 3 so that the material gets thinner toward the bottom section 31, and the sheet-shaped body 4 for storing the core 5 and the adhesive material can be released out of the opening 32 of the mold material 3 after molding the adhesive layer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive roll manufacturing apparatus and manufacturing method.

[0002]

2. Description of the Related Art Cleaning rollers for cleaning by rolling a roll having an adhesive layer on the surface to be cleaned are becoming popular. Particularly, from the viewpoints of economy and ease of maintenance, there is an increasing demand for a cleaning roller provided with an adhesive roll that can be used many times by washing the surface with water. This pressure-sensitive adhesive roll has a pressure-sensitive adhesive layer formed on the outer peripheral surface of a core of a tubular body, and the core forms a cleaning roller by being fixed to the rotary shaft and the rotary shaft of a holder provided with a handle. is there. Normally, this roller covers the surface of the adhesive layer of the adhesive roll with a sheet so that the adhesive layer is not exposed until it is used. Therefore, conventionally, after molding the pressure-sensitive adhesive layer, one sheet-shaped body was wound around the pressure-sensitive adhesive layer, but if not careful, the sheet-shaped body may be rubbed against the outer peripheral surface of the pressure-sensitive adhesive layer. The following manufacturing apparatus has been proposed in order to avoid troublesome work. That is, in this manufacturing apparatus, a method is used in which the core of the adhesive roller is inserted into a split mold that forms the adhesive member in a cylindrical shape, and the adhesive member is injected to form an adhesive layer on the roll surface. Then, a soft sheet-like body is placed on the entire mold or at least a portion forming the surface of the pressure-sensitive adhesive layer of the mold, and after molding, the sheet-like body is also demolded to be integrally formed with the pressure-sensitive adhesive roll as a coating layer. I was trying to do it.

[0003]

However, in the above-mentioned method, attention is paid only to the necessity of packaging work after molding,
On the other hand, the inefficiency of mold assembling / disassembling work has not attracted attention. More specifically, in order to facilitate the die-cutting of the sheet-shaped body including the adhesive roll after molding, this mold is a split mold, and the body and the bottom are
It was formed separately, and the body and the bottom were screwed together when the mold was assembled. Therefore, the assembly of mold materials
Inevitably, laborious work such as disassembly at the time of die cutting was inevitable, leading to enlargement of the process. The present invention is intended to solve the above problems.

[0004]

A pressure-sensitive adhesive roll manufacturing apparatus according to a first invention of the present application is a sheet for covering a mold member 3 for molding the pressure-sensitive adhesive layer 2 of a pressure-sensitive adhesive roll 1 and a pressure-sensitive adhesive roll 1 after molding. It has a body 4 and a core 5 of the adhesive roll 1 and has the following constitution. That is, the mold material 3 is
The body 30 has a tubular shape, one end of which has a bottom portion 31 and the other end of which has an opening portion 32. The bottom portion 31 and the body portion 30 of the mold member 3 are integrally formed. is there.
Also in the sheet-like body 4, the body portion 40 is tubular, one end has a bottom portion 41, and the other end has an opening portion 42.
The bottom portion 41 and the body portion 40 of the sheet-like body 4 are also integrally formed. Further, this sheet-shaped body 4 is
The outer peripheral surface and the bottom portion 41 are arranged along the inner peripheral surface of the body portion 30 and the bottom portion 31 of the mold material 3, and at least the inner peripheral surface is formed of a material having excellent mold releasability. It is a thing. Further, the core 5 is arranged in the center of the inside of the sheet-shaped body 4, and at this time, an adhesive material for forming an adhesive layer between the inner peripheral surface of the sheet-shaped body 4 and the outer periphery of the core 5. To form a space 100 capable of being filled. Then, at least the mold member 3 has a taper on the inner peripheral surface such that the inner diameter thereof is gradually reduced from the opening portion 32 toward the bottom portion 31, that is, the inner peripheral surface is tapered toward the bottom portion 31. By this,
The sheet-like body 4 containing the core 5 and the adhesive material can be taken out from the opening 32 of the mold material 3 after the adhesive layer 2 is molded. In the adhesive roll manufacturing method according to the second aspect of the present invention, the body portion 30 has a tubular shape, one end thereof has a bottom portion 31 and the other end thereof has an opening portion 32, and the bottom portion 31 and the body portion 30 are Prepares an integrally formed mold member 3, and the body member 40 has a cylindrical shape to the inner peripheral surface of the body member 30 and the bottom portion 31 of the mold member 3,
The sheet-like body 4 which has a bottom portion 41 at one end and an opening portion 42 at the other end, and which is also integrally formed with the bottom portion 41 and the body portion 40 and forms a coating of the pressure-sensitive adhesive roll after molding After the sheet-shaped body 4 is placed on the mold member 3, a core 5 of an adhesive roll having an outer diameter smaller than the inner diameter of the sheet-shaped body 4 is placed in the center of the inside of the sheet-shaped body 4. Has a second step. Then, the adhesive material 20 is applied to the space 100 formed between the outer peripheral surface of the core 5 and the inner peripheral surface of the sheet-like body 4.
And a sheet-shaped body 4 together with the sheet-shaped body 4 after the above-mentioned molding.
Has a fourth step of taking out the pressure-sensitive adhesive roll 1 covered with the mold material 4. Further, at least the sheet-like body 4 is one in which the inner peripheral surface of the body portion 40 is formed of a material having excellent mold releasability. From the above, the taper is adopted in which the inner diameter is gradually reduced toward the bottom portion 31, that is, the taper is tapered toward the bottom portion 31.

[0005]

In both inventions of the present application, when the pressure-sensitive adhesive roll 1 is pulled out together with the sheet-like body 4 from the mold member 3 after the pressure-sensitive adhesive layer 2 is formed, the inner diameter of the mold member 3 that encloses these in the direction of the opening 32. Is gradually increased, so that die cutting can be easily performed. Therefore, the body portion 30 and the bottom portion 31 of the mold material 3 can be integrally formed, which eliminates the need for assembling and disassembling the mold material to accommodate the sheet-like body 4 and the core when filling the adhesive material. Was done.

[0006]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. This shows a mold member 3 for molding the adhesive layer 2 of the adhesive roll 1 in the adhesive roll manufacturing apparatus according to the present invention.
The mold member 3 has a tubular body portion 30. A bottom portion 31 is formed at one end of the mold material 3. At the center of this bottom portion 31, the pressure-sensitive adhesive roller 1 inside (exactly, the bottom portion 41 of the sheet-like body 4 described later) is provided at the time of die-cutting described later.
Is formed with a hole 35 for externally pressing.
The cylindrical body portion 30 and the bottom portion 31 thereof are integrally molded, and the mold material 3 does not need to be assembled, and for molding the adhesive layer 2 of the adhesive roll 1 to be described later without changing its shape. Make a mold. That is, like the cup, the mold member 3 is formed integrally with the body portion 30 itself and the body portion 30 and the bottom portion 31 as a container for accommodating the adhesive roll 1 and the like. Of course, what is finally formed as the mold member 3 may be an integral mold, for example, the mold member is made into an integral mold by bonding a split mold made of wood or plastic with an adhesive material. However, it can be implemented. Further, the present invention can be carried out even if a metallic split mold is welded to be integrally formed. Further, the bottom of the conventional separation type mold material may be integrated with the body of the mold material by adhesion or the like.

An opening 32 is formed at the other end of the mold material 3, and this opening 32 serves as a take-out port for the adhesive roll 1 after molding which will be described later. The opening 32 is formed so as to have a sufficiently large inner diameter b with respect to the adhesive roll 1 in order to take out the adhesive roll 1 as described above. On the other hand, the body portion 30 near the bottom portion 31 provided at one end of the mold member 3 is formed to have an inner diameter a that is substantially the same as the outer diameter of the adhesive roll 1 after molding. The inner peripheral surface x of the die member 3 is tapered from the vicinity of the bottom portion 30 to the opening 32 so that its diameter gradually increases.

In the embodiment of FIG. 1, a large-diameter portion 33 having a larger inner diameter is provided on the peripheral edge of the opening 32 in order to fit the plug 7 for sealing the opening 32 later. Further, an annular protrusion 34 that is pointed upward in FIG. 2 is provided at the base of the large diameter portion 33, that is, at the step formed by the opening 32 and the large diameter portion 33. The annular protrusion 34 projects annularly along the end surface of the opening 32.

Next, as shown in FIG. 2, a sheet-like body 4 is arranged inside the above-mentioned mold material 3. This sheet-shaped body 4 is
It is formed of a material such as polyethylene having excellent releasability from an adhesive material described later. Since the sheet-like body 4 is adhered to the surface of an adhesive layer, which will be described later, formed by the mold material 3, it is appropriate that the sheet-like body 4 has appropriate deformability. From this point as well, it is appropriate to use a material such as polyethylene. Of course, if the above-mentioned releasability and deformability are ensured, it is possible to form the sheet-like body 4 by using another material such as fluororesin or silicone resin instead of polyethylene. By forming the sheet-like body 4 using such a material, it becomes unnecessary to apply the release agent to the inner peripheral surface of the mold material 3 which has been conventionally required. Therefore, it is not necessary to wash the used mold material 3 in preparation for the next molding,
It is very effective in eliminating the washing process and eliminating the need for a washing device.

The sheet-like body 4 is formed in a tubular shape and has a body portion 4
One end of 0 has a bottom portion 41, and the other end has an opening portion 42. The outer peripheral surface of the body portion 40 of the sheet-shaped body 4 is along the inner peripheral surface of the body portion 30 of the mold material 3, and the outside of the bottom portion 41 of the sheet-shaped body 4 is the bottom portion 3 of the mold material 3.
It follows the inside of 1. The bottom portion 41 and the body portion 40 of the sheet-like body 4 are also integrally formed. Since the outer peripheral surface of the sheet-like body 4 is along the inner peripheral surface of the mold member 3 as described above, it is tapered so that the diameter gradually increases from the bottom 41 toward the opening 42. On the other hand, the inner peripheral surface of the cylindrical sheet-shaped body 4 is formed so that the inner diameters are equal in each part. This is the adhesive roll 1 described later.
This is because the outer diameter of each part of the outer peripheral surface of the adhesive layer 2 is molded to be the same.

If a core holding portion 43 for holding a core 5, which will be described later, is formed in the center of the inside of the bottom portion 41 of the sheet-like body 4, the positioning of the core 5 becomes easy and effective. More specifically, the lead holding portion 43 is a short cylindrical portion having an outer diameter capable of fitting with the lead 5, and is formed in the center of the inside of the bottom portion 41. In this embodiment, a reverse hook 44 is formed on the peripheral edge of the opening 42 so that the sheet-like body 4 (particularly, the upper portion thereof) can surely follow the inner peripheral surface of the mold material 3.
By the engagement of the inverted hook 44 with the above-mentioned annular protrusion 34 provided on the peripheral edge of the opening 32 of the mold material 3, the soft sheet-like body 4 is surely aligned with the inner peripheral surface of the mold material 3.

As shown in FIG. 3, a core 5 is arranged in the center of the internal space of the sheet-like body 4. The core 5 serves as the core of the adhesive roll 1. The core 5 is formed in a hollow cylindrical shape and is made of a material having appropriate rigidity (property that does not deform). The positioning of the core 5 may be performed by fitting one end of the core 5 to the core holding portion 43 provided at the center of the inside of the bottom portion 41 of the sheet-shaped body 4.
At this time, the center of the core 5 and the center of the sheet-like body 4 coincide with each other.

The outer diameter of the core 5 is formed to be smaller than the inner diameter of the sheet-like body 4 in each part. By forming in this way, a space 100 is formed between the inner peripheral surface of the sheet-like body 4 and the outer periphery of the core 5 and can be filled with an adhesive material for forming the adhesive layer 2.

After the core 5 is placed inside the sheet-like body 4, the opening 32 of the mold 3 is closed by the plug 7. It is effective to provide a core holding portion 73 similar to the core holding portion 43 on the surface of the plug 7 that faces the inside of the mold member 3. This stopper 7
An appropriate number of adhesive material injection holes 71 and an appropriate number of air vent holes 72 are formed in the.

An example of use of the apparatus according to the present invention configured as described above will be described below. As shown in FIG. 4, the adhesive material 20 is filled in the space 100 through the injection hole 71 of the plug 7 fitted in the sheet-shaped body 4. In such a state, the pressure-sensitive adhesive material 20 is molded as the pressure-sensitive adhesive layer 2 under the regulation of the mold material 3. The air in the filling space 100 is discharged to the outside through the air vent hole 72 of the stopper 7.

After molding, as shown in FIG.
Then, the adhesive roll 1 is pulled out from the mold material 3. At this time, as described above, the inner peripheral surface of the mold material 3 has a taper, and the extraction can be smoothly performed. Further, by pressing the pressure-sensitive adhesive roll 1 inside the mold material 3 from the hole 35, this die cutting can be easily performed.

FIG. 6 shows the adhesive roll 1 after being taken out from the mold material 3. In this way, the adhesive roll 1 is completed as a product. When used, the sheet-like body 4
Peel off and use (at this time, from core 5 to sheet-like body 4
Bottom 41 is removed).

FIG. 7 shows another embodiment of the sheet-like body 4 of the adhesive roll 1. As shown in FIG. 7, the sheet-like body 4 covering the adhesive layer 2 has a weakening line 6 for cutting so that the adhesive roll can be smoothly removed when it is used.
It is also effective to form in the longitudinal direction. The weakening line 6 is provided by forming a groove-shaped portion having a thinner wall thickness than other portions of the sheet-shaped body 4. Also, such a weakening line is applied to the peripheral edge of the bottom portion 41 of the sheet-like body 4,
The adhesive roll 1 may be opened from the bottom 41 of the sheet-like body 4 (in FIG. 7, the bottom 41 is hidden behind the adhesive roll 1 and is not visible).

[0019]

By implementing the first aspect of the present invention, it is possible to easily remove the sheet-shaped body for accommodating the adhesive roll from the mold material, and to make the mold material an integral type instead of a split mold. Therefore, it is not necessary to set a process for assembling and disassembling the mold material, and the production efficiency can be improved by simplifying the manufacturing process of the adhesive roll. Further, by implementing the second invention of the present application, it is possible to provide the above-mentioned simplified manufacturing process having high production efficiency.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an essential part of an embodiment of the present invention.

FIG. 2 is a schematic sectional view of an essential part of the above embodiment of the present invention.

FIG. 3 is a schematic overall sectional view of the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a usage state of the device according to the present invention.

FIG. 5 is an explanatory diagram showing a usage state of the device according to the present invention.

FIG. 6 is a schematic cross-sectional view of the adhesive roll 1 molded by the device according to the present invention.

FIG. 7 is an overall perspective view of the adhesive roll 1 molded by the device according to the present invention.

[Explanation of symbols]

1 Adhesive roll 2 Adhesive layer 3 types 4 sheet 5 cores

Claims (2)

[Claims] 1. A mold material for molding an adhesive layer of an adhesive roll, and a sheet-like body for covering the adhesive roll after molding,
And a core of a pressure-sensitive adhesive roll, wherein the mold member has a cylindrical body, one end of which has a bottom and the other end of which has an opening. Is integrally formed, and the sheet-shaped body also has a cylindrical body portion, one end having a bottom portion, and the other end having an opening portion. The body and the body are also integrally formed, and the sheet-shaped body is such that the outer surface and the bottom of the body are arranged along the inner surface of the die and the bottom of the die, respectively. In addition, at least the inner peripheral surface of the body of the sheet-shaped body is formed of a material having excellent mold releasability, the core is arranged in the center of the inside of the sheet-shaped body, At this time, an adhesive material for forming an adhesive layer should be filled between the inner peripheral surface of the sheet and the outer peripheral surface of the core. At least the inner peripheral surface of the above-mentioned mold member is tapered so that its inner diameter gradually decreases from the opening to the bottom, that is, taper toward the bottom. According to this, the pressure-sensitive adhesive roll manufacturing apparatus is characterized in that after the pressure-sensitive adhesive layer is molded, the pressure-sensitive adhesive roll can be taken out from the opening of the mold together with the sheet-like body. 2. The body has a tubular shape, one end of which has a bottom,
Prepare a mold material having an opening at the other end and integrally forming the bottom part and the body part, and to the inner peripheral surface and the bottom part of the mold material,
Similarly, the body portion is tubular, one end has a bottom portion, the other end has an opening portion, and a sheet-like body that forms a coating of the adhesive roll after molding in which the bottom portion and the body portion are also integrally formed, A first step of arranging the sheet material along the mold, and a second step of arranging the core of the adhesive roll having an outer diameter smaller than the inner diameter of the sheet material in the center of the sheet material after the sheet material is arranged on the mold member. A third step of filling an adhesive material into a space formed between the outer peripheral surface of the core and an inner peripheral surface of the sheet-like body and forming an adhesive layer of an adhesive roll, and a sheet together with the sheet-like body after the forming The fourth step of taking out the pressure-sensitive adhesive roll covered with the sheet from the mold material is set, and at least the above-mentioned sheet-like body has an inner peripheral surface of its body portion,
A material formed of a material having excellent releasability is adopted, and at least the inner peripheral surface of the mold material is such that its inner diameter is gradually reduced from the opening to the bottom, that is, the inner surface is tapered toward the bottom. A method for producing an adhesive roll, characterized in that a taper is used.