JPH01247151A - Shaped sheet, aggregate thereof and preparation of said sheet - Google Patents

Abstract

PURPOSE:To obtain a shaped sheet capable of effectively utilizing the function of a filter material to the max. degree, by connecting cylinders each having a ring-shaped cross-section formed from a plate like material linearly in the radius direction thereof to form the same into a sheet shape. CONSTITUTION:Two wound plate like materials (e.g., papers) 2, 2a are respectively sent out by guide rollers 4, 4a and the plate like material 2 is guided between a main gear 5 and the follower gear 6 meshing therewith to follow the same to be molded into a wavy shape allowed to protrude only on one side so as to be curved in a semicircular shape and the plate material 2a is also processed in the same way to be molded into a wavy shape. An adhesive 7 is applied to the root parts 10, 10a of the curved protruding parts of the plate like materials 2, 2a and the coated materials 2, 2a are lightly brought into contact with respective guide plates 9, 9a to be prevented from deformation and fixed at the root parts 10, 10a by the main gears 5, 5a of press parts 11, 11a in opposed relationship to prepare a shaped sheet. By using this shaped sheet, a surface area per unit volume can be increased without increasing pressure loss.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shaped sheet, an aggregate thereof, and a method for manufacturing a shaped sheet, and specifically relates to a filtration filter for removing impurities in a fluid, or Related to shaped sheets used as adsorption filters for adsorbing impurities, moisture, etc. in fluids, catalyst-supporting sheets for promoting chemical reactions in fluids, their aggregates, and methods for producing shaped sheets. It is.

[Prior Art] Filters for filtration or adsorption used in dehumidifiers, dust removers, etc. are made by alternating a corrugated plate material (hereinafter referred to as a corrugated member) and a flat plate material. A so-called corrugated cardboard structure in which layers are stacked is commonly used. Various types of waveforms are known, such as sinusoidal and triangular shapes, and methods for forming waveforms include using a plate-like material (e.g., paper, metal foil, etc.) between the main gear and the driven gear. Various methods are known, including a method of forming a sheet into a tooth shape through a sheet or film made of synthetic resin or nonwoven fabric (the same applies hereinafter), or a method of shaping using a folding machine.

When assembling the corrugated members obtained in this manner to produce a filter, for example, US Pat. No. 3,020,
As seen in No. 977, after a corrugated member alone or a combination of the corrugated member and a flat plate material to form an aggregate, one end side of the sheet edge in the direction perpendicular to the corrugation (hereinafter referred to as the longitudinal direction) Adjacent small holes are alternately closed and arranged so that the open ends and closed ends are alternately lined up, and on the other end side, the end of the small hole opened on the -Manzu side is closed, and the end of the small hole opened on the -Manzu side is closed. A device has been developed in which the small hole is closed and the end is open. With this configuration, the fluid introduced from the end side cannot flow away in the longitudinal direction as it is, so it passes through the corrugated member and enters the adjacent passage before being released from the opening at the other end. Therefore, filtration is performed during the permeation process. Also, Japanese Patent Publication No. 61-59775 and Japanese Patent Publication No. 58-219
As seen in Japanese Patent No. 921, there is also a technique in which a fluid is caused to flow parallel to a corrugated member and deodorization, ozone decomposition, etc. are performed using a catalyst such as activated carbon contained or attached to the surface of the corrugated member.

[Problems to be Solved by the Invention] In any of the above applications, when an aggregate of corrugated members is used as a filter, from the viewpoint of increasing fluid processing efficiency, it is necessary to It is desired to increase the surface area of each plate-shaped material, and it is common to construct a corrugated sheet (hereinafter referred to as a shaped sheet) with two plate-shaped materials. However, in such cases, if the height and pitch of the ridges in the corrugated member are set for the purpose of increasing the surface area, the pressure loss of the fluid will increase in inverse proportion to the increase in surface area, and it will be difficult to satisfy the required characteristics as a filter. The problem arises that the volume must be increased.

Considering the recent trend of increasing the demand for smaller equipment, these problems cannot necessarily be said to be an effective solution, so methods for thinning the plate-like materials that make up the shaping sheet and forming corrugations have been developed.

At present, this problem is dealt with by various studies such as fixing the shape or equalizing the opening surface.

However, all of these methods have limitations,
This cannot be said to be a fundamental solution, and it is desired to improve the structure of shaped sheets from a completely different perspective.

The present invention was made to solve these technical problems, and its purpose is to maximize filling into a unit volume (in other words, increase surface area) and minimize pressure loss. The object of the present invention is to provide a shaped sheet, an aggregate thereof, and a method for manufacturing the shaped sheet, which can reduce the amount of filter material used and make the most effective use of the functions of the filter material.

[Means for Solving the Problems] The shaped sheet of the present invention that has achieved the above object is such that a cylinder having a ring-shaped cross section formed of a plate-like material extends linearly in the radial direction of the cylinder. The key point is that they are connected to form a C sheet shape.

Then, by stacking the above-mentioned shaped sheets in the thickness direction, a shaped sheet assembly having excellent performance as a filter material can be obtained.

Further, the shaped sheet can be manufactured by forming a corrugated member by protruding a plate material in a curved manner only on one side, and then fixing the corrugated members facing each other at the root portions of the curved protrusion.

[Configuration and operation] The present invention is configured as described above, but in short, for example, the first
As shown in the figure (enlarged explanatory diagram of main parts), a basic unit is a shaped sheet 1 formed by linearly connecting cylinders 3 in the radial direction of the cylinders 3, each of which has a ring-shaped cross section made of a plate-like material. This shaped sheet 1 shows excellent performance as a material for various filters, and by using such a shaped sheet, the surface area of the shaped sheet per unit volume of light can be reduced without increasing pressure loss. can be increased.

FIG. 2 is a schematic explanatory diagram illustrating a method for manufacturing the shaped sheet 1 according to the present invention. In FIG. 2, two wound plate-like materials (for example, paper) 2, 2a are each placed on a guiding roller 4.4.
Sent by a.

The plate-shaped material 2 includes a main drive gear 5 and a slave gear that meshes with and follows the main drive gear 5. ! I] Guided between the gears 6, the plate material 2 is shaped by these shaping gears 5.6 into a corrugated shape with a semicircular curve protruding only on one side. - Similarly, the force plate material 2a is guided between the main drive gear 5a and the driven gear 6a that meshes with and follows the main drive gear 5a, and the plate material 2a is formed into a wave shape. At this time, the main drive gear 5.5a is actively driven in synchronization.

The root portions 10° 10a of each curved protrusion in the plate material 2° 2a formed into a wave shape in this way (see Fig. 1)
The adhesive 7 is applied by a positively driven adhesive application roller 8.8a immersed in the adhesive 7. Thereafter, the plate-shaped materials 2.2a are lightly contacted with the respective guide plates 9.98 to prevent deformation, while the pressing portions 11. Main gear 5 with lla
, 5a, the base portions 10.degree. 10a are fixed facing each other, and the shaped sheet 1 shown in FIG. 1 is manufactured. The shaped sheet 1 is then taken up by a take-up machine (not shown), and further guided to a take-up machine or a shaker. The shaped sheet 1 having the above structure manufactured in this way can be used as a variety of filter materials by being accumulated in the thickness direction.

Note that the accumulation referred to here is not limited to the case of accumulating flat shaped sheets, but also stacking curved shaped sheets 1 to form a fan-shaped cross section, or winding the shaped sheets 1 to form a honeycomb shape. The meaning also includes the structure, etc. In addition, in the above explanation, paper has been mainly assumed as the plate-like material 2.28, but the plate-like materials 2 and 2a are not limited to paper, and as described above, the plate-like materials 2 and 2a are For the purpose of treating fluids, there are metal foils 1 synthetic resin sheets whose surfaces are treated with specific substances by coating, etc., which can be formed into corrugated members like non-woven fabrics when used for filtration purposes. Any filter can be used, and there is no limitation as to whether it is transparent or not, and it may be selected as appropriate depending on the purpose of the filter used.

On the other hand, as a practical matter, when creating a filter by accumulating the shaped sheet 1 of the present invention, it is of course possible to use the shaped sheet as it is in a flat form, but it is also possible to curve or wind it. more often used. In any case, in order to create a filter with excellent performance, it is desirable to adopt the configuration described below.

That is, the length of each circular arc of the plate-shaped materials 2, 2a formed into curved protrusions is 42. , j2. In this case, when the shaped sheet l is used in the form of a flat plate, it is designed so that <il=ρ as shown in FIG. 3(a). When using one side curved or rolled, as shown in Fig. 3(b), the arc length J:ll of either one is longer than the arc length 12 of the other side (x, > l12). If you design it,
A naturally curved shaped sheet is obtained as shown in FIG. 3(c). In the illustrated example above, the arcs of the plate-shaped material 2.28 are formed adjacently, but as shown in FIG. Length 1. It is preferable to make the length to a certain extent because it makes it easier to form a curve or winding. However, from the perspective of increasing the surface area within a unit volume,
There is also a limit to increasing the length I of the root portions 10, 10a.

Hereinafter, the present invention will be explained in more detail with reference to examples, but the following examples are not intended to limit the present invention.
Any design changes for the purposes described below are included within the technical scope of the present invention.

[Example] The following members were used as plate-like materials to form various filter materials shown below.

Filter material: Mainly made of polypropylene meltblown nonwoven fabric with a thickness of 0.7 mm. Filter material performance: Wind speed 10 cm/sec, pressure drop 3 mmAg, collection efficiency 92% (according to JIS-8-9908) First, see Figure 2. A shaped sheet 1 (an example of the present invention) having the configuration shown in FIG. 1 was manufactured by the method shown. In this case, the ratio of the arc length β+ and j22 (see Figure 3) is 42. :
J22=1. l: 1, and the radius of cylinder 3 is 1 mm
Closed.

On the other hand, as a comparative example, the pitch is 2.6mo+ and the wave height is 1.6mo+.
Cardboard with a sinusoidal cross section of 5 mm (Comparative Example 1)
A corrugated board (Comparative Example 2) having a triangular cross section and a pitch of 1.8 mm and a height of 1.5 H was manufactured.

Using each of these filter materials, a diameter of 80ffim
It was processed into a cylindrical filter with a length of 100 mm. At this time, the small holes at one end of the opening were alternately closed, and the open portion at the other end was closed so that the fluid could flow within the filter orthogonally to the filter medium.

The area of the filter media stored in each of these filters was measured, and the pressure loss and dust removal efficiency when 1.6 m3 of air was flowed were investigated.

The results are as shown in Table 1 below, and the filter constructed using the shaped sheet according to the invention not only has an increased area of filter media to be accommodated, but also has lower pressure loss compared to other constructions. It is understood that this shows a low value.

Table 1 [Effects of the Invention] As described above, according to the present invention, by employing the configuration described above, a shaped sheet suitable as a material for various filters can be obtained.

[Brief explanation of the drawing]

FIG. 1 is an enlarged explanatory view of the main parts showing the configuration of the shaped sheet of the present invention, FIG. 2 is a schematic explanatory diagram showing the configuration for manufacturing the shaped sheet 1, and FIG. 3 is an embodiment of the shaped sheet. FIG. 4 is a schematic explanatory diagram showing another example of the shaped sheet. 1... Shaped sheet 2, 2a... Plate material 3... Cylindrical body 4, 4a... 8-guiding roller 5.58...
・Main gear 6.6a... Driven gear 7... Adhesive 8.88... Adhesive application roller 9.9a
... Guide member 10, 10a ... Root part 11,
lla...pressing part

Claims (3)

[Claims] (1) A shaped sheet characterized in that a ring-shaped cylinder in cross section formed of a plate-like material is linearly connected in the radial direction of the cylinder to form a sheet shape. (2) A shaped sheet stack, characterized in that the shaped sheets of claim (1) are stacked in the thickness direction. (3) Producing the shaped sheet according to claim (1) by forming a corrugated member by making a plate-like material protrude in a curved manner only on one side, and fixing the corrugated members facing each other at the root portions of the curved protrusion. A method for producing a shaped sheet characterized by: