JP3030782U - filter - Google Patents

Abstract

(57) [Abstract] [Problem] To maintain a space between adjacent filters, and
Provide a pleated filter that is easy to assemble into a frame. SOLUTION: The filter medium 1 is a filter having a large number of pleats that are pleated along a fold line, and the pleats are arranged between the pleats in a direction crossing the fold line of the filter medium.
A filter provided with tacky ridges 2, 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter having a large number of pleat folds.

[0002]

[Prior art]

 Filters that filter and clean fluids such as air filters and oil filters are used after pleating to make them compact. It is desirable to make the filtration area as wide as possible and to fold it so that the space between adjacent filters is as narrow as possible in order to achieve compactness.

When the space between the filters is narrowed, the pressure of the passing fluid causes the filters to bend and come into contact with each other, so that the filtration area of the filter is reduced. Since a reduction in filtration area leads to a reduction in filter function and also an increase in pressure loss, measures have been taken to narrow the space between adjacent filters without contact between adjacent filters. For example, fold the filter material coated with hot melt resin linearly across the fold line to prevent adjacent filters from contacting each other by the hot melt resin coated linearly. Is being done.

However, in these pleated filters, the folds are opened because the filter and the hot-melt resin have rigidity, and when the folded filter is incorporated into the frame, it can be incorporated into the frame. There was a problem that the filter had to be refolded.

Further, in order to prevent mutual contact of the filters due to the pressure of the passing fluid, a foamed resin is linearly interposed between the pleats of the folded filter and the pleats in the direction crossing the folds of the filter medium. However, when a pleated filter is incorporated into the frame, it was not sufficient to avoid having to refold the filter so that it could be incorporated into the frame.

[0006]

[Problems to be solved by the device]

 Therefore, the present invention is to provide a pleated filter that maintains the space between adjacent filters and is easy to assemble into a frame.

[0007]

[Means for Solving the Problems]

 The above problems are (1) A filter having a large number of pleats in which the filter medium is pleated along a fold line, and the filter medium has adhesiveness in a direction crossing the fold line of the filter medium between the pleats. A filter characterized by being provided with ridges. (2) The filter according to (1) above, wherein the protrusion is formed of a resin having an adhesive property. (3) The filter according to (1) above, wherein only the surface of the ridge has adhesiveness. (4) The filter according to any one of (1) to (3) above, wherein the adhesiveness is self-adhesiveness. (5) The filter according to any one of (1) to (4) above, wherein the protrusions are provided intermittently in a direction crossing the fold line of the filter medium. (6) The filter according to any one of (1) to (5) above, wherein the protrusions are provided on both sides of the filter medium. Can be solved by.

Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these descriptions.

FIG. 1 is an explanatory view for explaining an example of the filter of the present invention, FIG. 2 is an exploded view of the filter shown in FIG. 1, and FIG. 3 is an explanatory view for explaining another example of the filter of the present invention. 4 is a developed view of the filter shown in FIG. 3, FIG. 5 is a sectional view taken along the line AA of FIG. 4, and FIG. 6 shows the filter of the present invention incorporated in a frame.

In FIGS. 1 and 2, 1 is a pleated filter medium, 2 is a sticky ridge provided on one surface of the filter medium 1, and 3 is an adhesive provided on the other side of the filter medium 1. It is a prominent ridge. Adhesive ridges 2 adjacent to each other and ridges 3 adjacent to each other having adhesiveness should be joined to each other by the adhesiveness of each ridge 2 and ridge 3 when the filter is fold-folded to form a fold. It is possible to maintain the fold-folded form without any.

As shown in FIG. 2, the filter of the present invention shown in FIG. 1 uses a molding machine or the like in which a ridge 2 (shown by a solid line) having adhesiveness is extruded on one surface of a filter medium 1. It is intermittently formed in a linear shape, and a protrusion 3 (shown by a dotted line) having adhesiveness is formed on the other surface of the filter medium 1 by an extrusion molding machine or the like intermittently in a linear shape, and is shown by a chain line. It can be obtained by pleating a mountain fold line 4 and a valley fold line 5 indicated by a chain double-dashed line.

In the filter shown in FIG. 3, adhesive ridges are continuously formed in a linear shape on both surfaces of the filter medium.

In FIGS. 3, 4 and 5, 11 is a pleated filter medium, 12 is a ridge having an adhesive property provided on one surface of the filter medium 1, and 13 is provided on the other surface of the filter medium 1. The raised ridge having adhesiveness, which is indicated by a chain line 14 is a mountain fold line, and shown by a chain double-dash line 15 is a valley fold line. Adjacent ridges 12 having adhesiveness and adjacent ridges 13 having adhesiveness can be joined together by the adhesiveness of the respective folds when the filter is fold-folded, and can maintain a pleated shape.

As shown in FIGS. 4 and 5, the filter of the present invention shown in FIG. 3 extrudes adhesive ridges 12 and adhesive ridges 13 on both surfaces of the filter medium 11 to form a molding machine. Etc. to form a linear shape, and fold it at a mountain fold line 14 indicated by a one-dot chain line and a valley fold line 15 indicated by a two-dot chain line.

As shown in FIG. 6, the filter, which is joined by adhesiveness and retains the fold-folded shape without opening the folds, is incorporated into the frame 6 and the periphery thereof is adhered with an adhesive to form a frame. An ingress filter can be formed.

The filter material may be any material such as filter paper and non-woven fabric.

The sticky ridge can be formed using a soft sticky resin. Alternatively, tacky ridges may be formed using a non-tacky resin and then the ridged surface may be treated to make it tacky. Adhesiveness is not particularly limited as long as adjacent ridges are bonded to each other and can maintain the shape of the folds of the filter. It is preferable to use a material that exhibits adhesiveness only when they are in contact with each other, that is, a material that has self-adhesiveness, because the work becomes easy. The cross-sectional shape of each ridge increases the contact area between adjacent ridges, and thus it is preferable that the cross-section has a flat shape or the like.

The protrusions having tackiness can be provided by extruding a molten resin linearly on the surface of the filter medium intermittently or continuously using an extrusion molding machine or the like.

[0019]

[Effect of device]

 According to the present invention, since the ridges for maintaining the space between the adjacent filters have adhesiveness at least on the surface, the fold-folded filter can retain the form to be incorporated into the frame. It becomes easy to incorporate into. Also, since the spacing between adjacent filters is made by the ridges provided on the filter surface, the folding of the filters can be made dense and the spacing between adjacent filters can be made uniform. The contact between adjacent filters is prevented, and the filtration area can be increased.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating an example of a filter of the present invention.

FIG. 2 is a developed view of the filter shown in FIG.

FIG. 3 is an explanatory view illustrating another example of the filter of the present invention.

FIG. 4 is a developed view of the filter shown in FIG.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a filter of the invention incorporated into a frame.

[Explanation of symbols]

1, 11 Folded filter medium 2, 12 Adhesive ridges provided on one surface of filter medium 3, 13 Adhesive ridges provided on other surface of filter medium 4, 14 Mountain fold line 5, 15 Valley fold line 6 frame

Claims (6)

[Scope of utility model registration request] 1. A filter having a large number of pleats in which the filter medium is pleated along a fold line, and an adhesive ridge is provided between the pleats in a direction crossing the fold line of the filter medium. A filter characterized by being. 2. The filter according to claim 1, wherein the protrusion is formed of a resin having an adhesive property. 3. The filter according to claim 1, wherein only the surface of the ridge is tacky. 4. The filter according to claim 1, wherein the adhesiveness is self-adhesiveness. 5. The filter according to claim 1, wherein the ridges are provided intermittently in a direction crossing the fold line of the filter medium. 6. The filter according to claim 1, wherein the ridges are provided on both surfaces of the filter medium.