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Filter material and method for manufacturing filter material

A filter and filter material technology, applied in chemical instruments and methods, separation methods, dispersed particle filtration, etc., can solve the problems of large pressure loss of filter material 100, narrowed interval, and poor airtight filter unit.

Inactive Publication Date: 2017-12-22
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, when the filter material 100 is mounted on a template to form a filter unit, a gap occurs between the filter material 100 and the template, resulting in a filter unit with poor airtightness.
In addition, the pressure loss of the filter medium 100 may also increase due to the narrowing of the space between the flat parts 100b.

Method used

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  • Filter material and method for manufacturing filter material
  • Filter material and method for manufacturing filter material
  • Filter material and method for manufacturing filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] filter media

[0098] The filter medium 1 was produced by the above method, and the length L1 was 1298 mm, the width L2 was 1180 mm, and the height L3 was 35 mm. In addition, the adhesive (hot melt adhesive) used for forming the rib 3a and the rib application length ratio are shown in Table 1 below.

[0099] Determination of shrinkage

[0100] The filter medium 1 is arranged in a planar shape so that the flat plate portion 1b of the obtained filter medium 1 is substantially horizontal (in other words, the length L1 direction of the filter medium 1 is approximately vertical). Then, a load of 3 kg was applied to the filter medium 1 from above along the length L1 direction.

[0101] Then, the length L1 of the filter medium 1 to which the load was applied was measured. The shrinkage rate was calculated from the obtained measurement results and the following formula (2). The calculated shrinkage ratios are shown in Table 1 below.

[0102] Shrinkage rate (%)={(length...

Embodiment 2～6、 comparative example 1 and comparative example 2

[0107] Use the adhesive shown in the following Table 1 as the adhesive (hot melt adhesive) for forming the rib 3a, and the rib coating length ratio is as shown in the following Table 1, except that it is the same as in Example 1 The filter material 1 and the filter unit were produced under the condition of , and the shrinkage rate was measured. The shrinkage rate and the evaluation of the airtightness of the filter unit are shown in Table 1 below.

[0108] Table 1

[0109]

[0110] Summarize

[0111] From the comparison of each Example and each Comparative Example, it can be seen that the shrinkage rate of each Example is lower than that of each Comparative Example. The reason for this is that, as in each embodiment, the rib coating length ratio is 50% or more, so that the spacer 3 on one side and the spacer 3 on the other side overlap at the approximate center of the flat plate 1b via the flat plate 1b. State, along the length L1 direction of the filter medium 1, a ...

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Abstract

To provide a filter medium and a manufacturing method for the same, which can prevent itself from reducing in its dimension in a direction along a compression direction compared with the dimension before compression, when a force in the compression direction continuously applied has been released. A filter medium includes a filter medium web, space retention members disposed on one side and the other side of the filter medium web, respectively, and flat plate members, the filter medium being configured so that the space retention members on both sides of the filter medium lie on each other with the flat plate members interposed therebetween.

Description

[0001] This application is a divisional application of the application number 201310467674.8, the application date is October 09, 2013, and the invention name is a filter material and a manufacturing method of the filter material. technical field [0002] The present invention relates to a filter material for trapping particles contained in the gas to be filtered and a manufacturing method thereof, in particular to a filter material obtained by pleating a filter material raw material configured to trap the particles. material. Background technique [0003] Conventionally, as the filter material used in the clean room of the factory that manufactures semiconductor, liquid crystal, etc., known Figure 5 The filter medium 100 as shown is shown (refer patent document 1). The filter material 100 is formed in a pleated shape by bending a filter material raw material 200 configured to trap particles contained in a gas to be filtered at multiple places. [0004] This filter materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/40B01D46/00
CPCB01D46/0001B01D46/40B01D46/523
Inventor 新井雅弘堀江百合森将明内山志穗
Owner NITTO DENKO CORP