JP2511272B2 - Method for forming honeycomb core made of breathable material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention has a breathable material as a base material, and thus a majority of cell walls have breathability, and can be used as, for example, a dust collecting filter, The present invention relates to a method for forming a honeycomb core made of a ventilation material.

"Prior art""Problems to be solved by the invention" Conventionally, the dust collecting filters used in various devices are mat-shaped, and therefore the thickness of the dust collecting filter is increased to improve the collection efficiency. Although it is necessary, when the dust collecting filter is made thick, there is a drawback that the pressure loss becomes large. Further, such a dust collecting filter has a drawback that it is heavy in the case of a large-scale apparatus and is not easy to handle at the time of cleaning.

Therefore, there has been a demand for the development of a dust collecting filter that is light in weight and easy to handle even when the collection efficiency is high, the pressure loss is small, and the apparatus used is large in scale. However, at present, such a dust collecting filter has not been provided yet.

Therefore, paying attention to a honeycomb core having a large surface area and being lightweight, by molding the honeycomb core with a base material made of a ventilation material, it is possible to satisfy the above requirements. Attempts have been made to develop such a honeycomb core. Then, in order to form such a honeycomb core, first, as a base material,
It is necessary to use a woven or non-woven fabric having air permeability, and as a honeycomb core molding means using such a flexible substrate, only a stretch molding method is possible. Such a honeycomb core cannot be molded. That is, it has been considered that only the expansion molding method is possible in which the honeycomb core is obtained by applying the adhesive, polymerizing, superposing, and expanding the base material in a linear shape.

However, in the process of such a spread molding method, the base material made of a woven or non-woven fabric having air permeability, when an adhesive is applied to bond a predetermined joint portion, the applied adhesive is The base material to be coated permeates and oozes to the opposite surface, or the applied adhesive permeates to the other polymerized side of the base material afterwards and oozes to the opposite surface by heating and pressing, There is a drawback. As a result of such bleeding, parts other than the predetermined joint part are also adhered, and as a result, it has hitherto been impossible to form a honeycomb core from such a base material. It was

The present invention has been made in view of the above circumstances, and an object thereof is to enable formation of a honeycomb core having a breathable material as a base material, and thus when used as, for example, a dust collecting filter, An object of the present invention is to propose a method for forming a honeycomb core made of a ventilation material, which has a low pressure loss despite its high collection efficiency and is lightweight and easy to handle even when a large filter is required.

"Means for Solving Problems" The present invention has been made to achieve the above object, and technical means for solving the problems are as follows. First,
The first item is as follows. The method for forming a honeycomb core made of a breathable material according to the first item includes the following sealing line forming step, sealing agent permeation and curing step, adhesive layer forming step, polymerization step, superposition,
It has a joining process and a spreading process.

That is, first, in a sheet-like breathable material made of a woven fabric or a nonwoven fabric having breathability using the fibers constituting the base material, at a predetermined pitch along the length or width direction,
A sealing line forming step of applying a sealing agent for forming a sealing line of a predetermined width, and the breathing material at the site where the sealing line is formed in this way, the applied sealing agent is The permeation and curing process of the sealing agent, which prevents the penetration and passage of other liquids and gases by hardening the sealing agent while penetrating inside and seeping out to the opposite surface, In addition, an adhesive layer forming step of forming an adhesive layer by applying an adhesive on the sealing lines located every other part of such a ventilation material, and the following steps. I will do it.

That is, a predetermined number of the respective breathing materials are provided so that the respective seaming lines correspond to each other, and the seaming lines in which the adhesive layer of one of the breathing materials which is adjacent to each other are not formed, and the other In a relationship in which the sealing line on which the adhesive layer of the ventilation material is formed corresponds to each other, a polymerization step of sequentially superposing, and thereafter, by heating and pressurizing each of the superposed ventilation materials, In the adhesive layer, the sealing line and the joining process in which the sealing lines are alternately displaced by one pitch are joined together, and each of the ventilation members thus joined and joined in the stacking direction. By expanding, a cell wall is formed by each of the air-permeable air-permeable materials except for the joint portion and the sealing line, and thus, a expansion step of obtaining a honeycomb core made of the air-permeable material.

Next, the second item is as follows. That is, in the method for forming a honeycomb core made of a breathable material according to the second item, in the method for forming a honeycomb core made of a breathable material according to the first item, first, in the adhesive layer forming step, the front and back sides of the breathable material are Are alternately shifted by one pitch to form the adhesive layer. Further, in the polymerization step, as the one of the ventilation materials positioned adjacent to each other, a material in which the adhesive layer is not formed at all without following the adhesive layer forming step is used, and the other positioned adjacent to each other. As the air-permeable material, a material having the adhesive layer formed on the front and back sides through such an adhesive layer forming step is used, and both the air-permeable materials are alternately laminated.

[Operation] The present invention comprises the above means, and operates as follows. That is, in this method for forming a honeycomb core made of a breathable material, a sheet-shaped breathable material that constitutes the base material of the breathable material is formed into a striation-shaped joining portion having a predetermined width in a subsequent step of laminating and joining. Before each adhesive layer is formed in the adhesive layer forming step, a sealing line is previously formed by the sealing agent in the sealing line forming step and the sealing agent permeation / curing step at each position. ing. Therefore, in the breathable material as the base material, the permeation of the adhesive is prevented by the sealing line and the permeated and cured sealing agent.

That is, although it is an adhesive that forms an adhesive layer by application, first, the adhesive applied on the sealing line in the adhesive layer forming step, the polymerization step, the stacking, the joining step, etc. It does not penetrate into the air-permeable material to be applied, and also during the polymerization process, heavy-duty bonding, and joining process
When the ventilation materials are overlapped and joined, the sealing line and the permeated and cured sealing agent are located for one ventilation material corresponding to the adhesive layer of the other ventilation material located adjacent The adhesive in the adhesive layer of the other ventilation material is not melted by heating and pressurization and permeates into the other ventilation material.

As a result, these do not allow the permeated adhesive to seep out to the opposite side of the vent, so that the other vents adjacent to this opposite side (ie, the one and the other vents described above). However, there is no possibility that the ventilation materials adjacent to each other will be adhered to each other, and that they cannot be spread. Therefore, by following the expansion step after the fact, it becomes possible to easily and for the first time form the honeycomb core made of a ventilation material.

In addition, all the cell walls constituting the cells of the formed honeycomb core made of the air-permeable material have air-permeability except for the joints. Therefore, when the air-permeable honeycomb core formed in this way is used as a dust collecting filter of various devices, for example, the flow path of the air to be dedusted is in the direction orthogonal to the cell axis, that is, the air to be dedusted is the cell. Place it in the direction that passes through the wall. As a result, dust in the air is filtered by a large number of cell walls made of a ventilation material, which are located at predetermined intervals in the honeycomb core made of a ventilation material, so that a film having high collection efficiency can be obtained. Along with this, in this honeycomb core made of air permeable material, since many thin cell walls made of air permeable material are located at predetermined intervals, the conventional mat-shaped dust collection for dust collection has the same collection efficiency. Compared to a filter, the pressure loss is lighter, and even when a large-scale device that requires high collection efficiency is required, it is lightweight and easy to handle.

[Examples] Hereinafter, the present invention will be described based on examples shown in the drawings. In FIGS. 1 to 4, reference numeral 2 denotes a sheet-like member made of a breathable woven fabric or non-woven fabric, which is made of a natural fiber, a chemical fiber or the like constituting a base material of the honeycomb core 1 made of a breathable material. , Which has a predetermined width, is formed at a predetermined pitch P along the longitudinal direction of the ventilation line 2 in the process of forming the sealing line 3.

The sealing lines 3, 3, ... are made of resin adhesive, for example.
13 and this eye-stopper 13 by silk screen printing
It is formed by applying it on the ventilation material 2 in the form of a stripe having a predetermined width at a predetermined pitch P, and then curing the sealing agent 13 applied in this manner. As for the ventilation material 2 at the part where the sealing line 3 is formed, the applied sealing material 13 is once put into the ventilation material 2 as a step of permeating and curing the sealing agent 13 in the process of forming the sealing line 3. Although it permeates and oozes out to the opposite surface, by appropriately curing the permeating agent 13 that has permeated by the curing means, the fibers constituting the ventilation material 2 at that portion are firmly adhered to each other and cured. The part where the blind line 3 is formed completely blocks the permeation of liquid and the passage of gas. When such a sealing agent 13 is, for example, a UV-curable adhesive, it is possible to speed up curing and save time during the next operation. .

Next, regarding the ventilation member 2 on which the sealing lines 3, 3, ... Are formed, in the adhesive layer 4 forming step, the ventilation line 2 is formed on the alternate sealing lines 3 to have the same width as the sealing lines 3. The adhesive 14 is applied so as to form the adhesive layer 4. After a while
A predetermined number of ventilation materials 2,2, ... With the adhesive layers 4,4 ,.
In the polymerization step, as shown in FIG. 3, the adhesive layer 4 of the other ventilation material 2 in the ventilation materials 2, 2 adjacent to each other.
And the sealing line 3 of one of the ventilation members 2 are sequentially superposed in the corresponding positional relationship. Finally, in the heavy-duty bonding and joining process, the ventilation material 2 in which only the sealing lines 3, 3, ... Are formed.
Are superposed on the uppermost and the lowermost layers, and then are joined or superposed as a whole to form the unexpanded honeycomb core 5.

When the honeycomb core 5 in the unexpanded state is formed by the heavy attachment and the joining, the part of the one ventilation member 2 corresponding to the adhesive layer 4 of the other adjacent ventilation member 2 is
Since the sealing line 3 and the permeated and hardened sealing agent 13 are located, the adhesive layer 4 is applied by heating and pressurizing during heavy deposition.
Although the adhesive 14 that composes is once melted, the melted adhesive 14 does not penetrate into the one ventilation member 2,
The respective ventilation members 2, 2 are joined between the respective sealing lines 3, 3.

Incidentally, the formation of the adhesive layer 4 and the like are not limited to the above-mentioned embodiment, and as shown in FIG.
First, in order to position the adhesive layers 4, 4, ... alternately by one pitch P on the front and back of the ventilation member 2 on which the sealing lines 3, 3, ... are formed, the front and back of the ventilation member 2 are sealed. The adhesive layers 4, 4, ... Are formed on the lines 3, 3 ,. And, in this way, the ventilation material 2 in which the adhesive layers 4, 4, ... Are formed on the front and back of the ventilation material 2,
The air-permeable material 2 in which the adhesive layers 4, 4, ... Are not formed at all and only the sealing lines 3, 3 ,.

Next, the unexpanded honeycomb core 5 formed by stacking a predetermined number of ventilation materials 2, 2, ...
Is used directly, or is cut into a predetermined length in a direction orthogonal to the sealing line 3. Then, in the spreading step, the cell 6 has a desired height in the axial direction of the cells 6 by appropriately stretching in the weighting direction, that is, the stretching direction W, by a stretching means, and each cell 6, 6, ... Has a substantially regular hexagonal shape. It is possible to mold the honeycomb core 1 made of a ventilating material. As for the cell walls 7, 7, forming the cells 6, 6, of the formed honeycomb core 1 made of a ventilation material, at least twice as large as the area of the cell wall 7 where the joints, that is, the sealing lines 3 are formed. The cell wall 7 corresponding to the area of 1 holds the state having air permeability.

Therefore, for example, such a honeycomb core 1 made of a ventilation material
Is used as a dust collecting filter of various devices, and the air to be removed is allowed to pass through the surface of the cell wall 7, so that the dust in the air is separated from the cell wall 7 by a large number of air permeability. It is possible to obtain extremely high collection efficiency by filtering with 7,7, .... At the same time, in this honeycomb core 1 made of a ventilation material, a large number of thin air-permeable cell walls 7, 7, ... Are located at a predetermined interval, so that the conventional collection efficiency is the same. Compared to the matte type dust collecting filter, the pressure loss is smaller, and even if a large size and high collecting efficiency is required, it is lightweight and easy to handle. .

First of all, the honeycomb core 1 made of the air-permeable material is made of the material of the air-permeable material 2, the number of the air-permeable materials 2 to be overlaid, or the cells 6.
It is possible to easily obtain a desired collection efficiency by appropriately setting the size of the above. Secondly, in the above-mentioned example, the molding method of the present invention has been described for each step, but a sheet roll-shaped breathing material may be used and the molding may be continuously performed by a series of molding devices. The third
In the above, the use of the breathable honeycomb core 1 molded by the molding method according to the present invention has been described as an example of use in a dust collecting filter, but the use of the breathable honeycomb core 1 is as follows. The filter is not limited to the dust collecting filter. For example, it can be used as the core material of the suction panel. When used as the core material of the suction panel in this way, since the majority of the cell walls 7, 7, ... Have air permeability, It was indispensable for the honeycomb core that constitutes the core material of this kind of panel, it is not necessary to provide a communication hole for communicating each cell, which is troublesome to form, and therefore the cell is caused by providing the communication hole. Wall strength is partially reduced,
Problems such as the above can be avoided.

"Effects of the Invention" As described in detail above, according to the method for forming a honeycomb core made of a ventilation material according to the present invention, it is possible for the first time to mold a honeycomb core using a ventilation material as a base material. Therefore, when the honeycomb core made of a ventilation material formed by this forming method is used as a dust collecting filter of various devices, for example, a dust collecting filter with high pressure collection efficiency and low pressure loss is obtained. In addition, even if the required size of the dust collection filter is large and the collection efficiency is high, it is lightweight and easy to handle, and the conventional mat-shaped dust collection filter has It has excellent effects such as the elimination of defects.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view showing a state where a sealing line is formed on the ventilation material, FIG. 2 is a perspective view showing a state where an adhesive layer is formed on the sealing line, and FIG. 3 is a predetermined number of sheets. FIG. 4 is an explanatory view showing a step of forming a honeycomb core in an unexpanded state by superposing the ventilation material of FIG. 4, and FIG. 4 is a perspective view of a main part of the honeycomb core made of the ventilation material. FIG. 5 is an explanatory view showing another embodiment of the adhesive layer formed on the sealing line. 1 ... Ventilated honeycomb core 2 ... Ventilation material 3 ... Sealing line 4 ... Adhesive layer 5 ... Unexpanded honeycomb core 6 ... Cell 7 ... Cell wall 13 ... Sealing agent 14 …… Adhesive P …… Pitch W …… Stretching direction

Claims (2)

(57) [Claims] 1. A method of molding a honeycomb core made of a ventilation material, which comprises first forming a sheet-shaped ventilation material made of a woven fabric or a non-woven fabric having breathability using fibers constituting a base material thereof, and length thereof. Alternatively, a sealing line forming step of applying a sealing agent for forming a sealing line having a predetermined width at a predetermined pitch along the width direction, and the ventilation material at the portion where the sealing line is formed in this way. Means that the applied sealing agent penetrates into the inside and exudes to the opposite surface, and the curing of the sealing agent prevents penetration and passage of other liquids and gases. A step of infiltrating and curing a sealing agent, and then forming an adhesive layer by applying an adhesive on the sealing line located every other one of the breathable materials. The process and a predetermined number of each of the breathable materials, With corresponding located have a said purpose stop line adhesive layer adjacent one located in the vent material is not formed,
A polymerization step in which the other breathing material is sequentially stacked in a corresponding position with the sealing line on which the adhesive layer is formed, and thereafter, by heating and pressing each of the stacked breathing materials. And a step of joining in which the seam lines are alternately displaced by one pitch in the adhesive layer, a joining step, and The cell wall is formed by each of the air-permeable materials having air permeability except for the joint portion and the sealing line, so that the honeycomb core made of the air-permeable material is expanded. A method for forming a honeycomb core made of a ventilation material, comprising: 2. The method for forming a honeycomb core made of a breathable material according to claim 1, wherein in the adhesive layer forming step, the adhesive layer is formed by alternately shifting the front and back sides of the breathable material by one pitch. And, in the polymerization step, as one of the breathing materials positioned adjacent to each other, a material in which the adhesive agent layer is not formed at all without following the adhesive agent layer forming step is used, and the breathing material is positioned adjacent to each other. As the other air-permeable material, one having the adhesive layer formed on the front and back sides through such an adhesive layer forming step is used, and such both air-permeable materials are alternately laminated. A method for forming a honeycomb core made of a ventilation material.