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Air-filter medium

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: 2019-01-04
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 transporting the second fiber web with the needle punching device, firstly use #40×12mm×80P / cm on one side 2 Carry out 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 with #42×12mm×56P / cm 2 Carry out the third acupuncture treatment, followed by #42×10mm×56P / cm 2 The fourth needling treatment was performed to form a laminate with a two-layer structure.

[0125] (Step 2)

[0126] Next, while transporting the first fiber web with a needle punching device, firstly, it is #40×12mm×80P / cm on one side. 2 Carry out the fifth acupuncture treatment, followed by #40×12mm×113P / cm 2 Perform the sixth acupuncture treatment. Then, on the other side, overlap the second fiber web side of the laminate formed in step 1, from the spunlace nonwoven side to #42×12mm×56P / cm 2 Carry out the 7th acupuncture trea...

Embodiment 2

[0130] Using the materials in Table 1, the same operation as in Example 1 was repeated to form a laminate with a three-layer structure, and heat fusion treatment was performed to produce a finished product with a basis weight of 299g / m 2 , The finished air filter material with thickness of 1.90mm.

Embodiment 3

[0132] Using the materials in Table 1, the same operation as in Example 1 was repeated to form a three-layer structure laminate, and heat fusion treatment was performed to produce a finished product with a basis weight of 304 g / m 2 , The finished air filter material with thickness of 2.10mm. Among them, the conditions of the 3rd needling treatment, the 4th needling treatment, the 7th needling treatment and the 8th needling treatment are set as #42×11mm×56P / cm, respectively 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 abasis 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 sheathshave melting points of 100-160 DEG C, and the polyesters corresponding to the cores have melting points of 250-260 DEG 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 DEG C.

Description

Technical field [0001] The present invention relates to a non-woven fabric-based air filter material used for air purifiers of various internal combustion engines such as reciprocating engines, rotary engines, gas turbine engines and the like using gasoline, ethanol, light oil, heavy oil, etc. as fuel. Background technique [0002] When dust is mixed in the air introduced into the cylinder of an automobile engine, there will be problems such as damage to the inner wall of the cylinder and cause engine failure. Therefore, in the past, the air filter material of the automobile air purifier was formed into a pleated shape. It is required to show not only good dust collection properties (such as cleaning efficiency) by itself, but also good wrinkle shape retention to achieve a good lifespan, or good flame retardancy to prevent fire in an automobile engine room. [0003] In response to these requirements, some people have proposed the following non-woven fabric base air filter material:...

Claims

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Application Information

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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