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air filter material

An air filter material, core-sheath type technology, which is applied in the field of air filter materials with non-woven fabrics, can solve the problems of viscous oil scattering, reduce the measurement accuracy of sensors, etc., and achieve the effect of improving rigidity and flame retardancy

Active Publication Date: 2019-07-09
DYNIC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, from the viewpoint of exhaust gas control or improvement of fuel consumption, it is required to accurately measure the air-fuel ratio with a sensor for the air-fuel mixture introduced into the combustion chamber of the engine, and continuously optimize it. On the other hand, in Patent Document 1 In the case of the air filter material, there is a concern that the viscous oil will scatter to the air-fuel ratio sensing area due to the air flowing into the air cleaner, reducing the measurement accuracy of the sensor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] (step 1)

[0124] While conveying the second fiber web with the needling device, firstly, #40×12mm×80P / cm on one side 2 Perform the first acupuncture treatment, followed by #40×12mm×113P / cm 2 Perform the second acupuncture treatment. Then, overlap the spunlace non-woven fabric on the other side, from the side of the spunlace non-woven fabric at #42×12mm×56P / cm 2 Perform the third acupuncture treatment, then use #42×10mm×56P / cm 2 The fourth needling treatment was performed to form a laminate having a two-layer structure.

[0125] (step 2)

[0126] Next, while conveying the first fiber web with a needle punching device, firstly, on one side at #40×12mm×80P / cm 2 Perform the 5th acupuncture treatment, then use #40×12mm×113P / cm 2 Perform the 6th acupuncture treatment. Then, on the other side, overlap from the second fiber web side of the laminate formed in step 1, from the side of the spunlace nonwoven fabric at #42×12mm×56P / cm 2 Perform the 7th acupuncture treatment...

Embodiment 2

[0130] Using the materials in Table 1, by repeating the same operation as in Example 1, a laminate with a three-layer structure was formed, and a finished product with a weight per unit area of ​​299 g / m was produced by performing heat fusion treatment. 2 , Finished air filter material with a thickness of 1.90mm.

Embodiment 3

[0132] Using the materials in Table 1, by repeating the same operation as in Example 1, a laminate with a three-layer structure was formed, and a finished product with a weight per unit area of ​​304 g / m was produced by performing heat fusion treatment. 2 , Finished air filter material with a thickness of 2.10mm. Among them, the conditions of the 3rd acupuncture treatment, the 4th acupuncture treatment, the 7th acupuncture treatment and the 8th acupuncture treatment are respectively set to #42×11mm×56P / cm 2 , #42×9mm×56P / cm 2 、#42×11mm×56P / cm 2 and #42×9mm×56P / cm 2 .

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Abstract

A sheet-shaped air-filter medium obtained by laminating first needle-punched nonwoven fabric, which comprises core-sheath type heat-fusible short composite polyester fibers and non-core-sheath type short polyester fibers, second needle-punched nonwoven fabric, which comprises core-sheath type heat-fusible short composite polyester fibers and non-core-sheath type short polyester fibers, and spun lace nonwoven fabric comprising core-sheath type heat-fusible short composite polyester fibers and non-core-sheath type short polyester fibers, the air-filter medium having undergone thermal fusion bonding and having a sheet thickness, as measured in accordance with JIS-P-8118, of 1.6-2.3 mm, a stiffness, as measured in accordance with JIS-L-1096 8.22. method 1A (Gurley method), of 70-110 mN, and a basis weight of 240-340 g / m2. The first needle-punched nonwoven fabric, the second needle-punched nonwoven fabric, and the spun lace nonwoven fabric have respective specific basis weights. In the core-sheath type heat-fusible short composite polyester fibers of each of the first and second needle-punched nonwoven fabric and the spun lace nonwoven fabric, the polyesters corresponding to the sheaths have melting points of 100-160°C, and the polyesters corresponding to the cores have melting points of 250-260°C. The non-core-sheath type short polyester fibers of each of the first and second needle-punched nonwoven fabric and the spun lace nonwoven fabric have melting points of 250-260°C.

Description

technical field [0001] The present invention relates to non-woven fabric-based air filter materials for air cleaners of various internal combustion engines such as reciprocating engines, rotary engines, and gas turbine engines that use gasoline, ethanol, light oil, and heavy oil as fuel. Background technique [0002] When the air introduced into the cylinder of the automobile engine is mixed with dust, there will be problems such as damage to the inner wall of the cylinder and cause engine failure. It is required to exhibit not only good dust collection properties such as cleaning efficiency but also good pleat shape retention to achieve a good lifespan, or also good flame retardancy to prevent fire in an engine compartment of an automobile by itself. [0003] In response to these requirements, the following non-woven fabric-based air filter materials have been proposed: a needle-punched non-woven fabric is laminated with a laminated spunlace non-woven fabric layer, and a po...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16B32B5/02B32B5/26D04H1/46D04H1/492D04H1/55F02M35/024
CPCB01D39/16B32B5/02B32B5/26D04H1/46D04H1/492D04H1/55F02M35/024
Inventor 高桥俊宪梅津则雄水井和正
Owner DYNIC CORPORATION