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Non-woven fabric and filter

A technology of non-woven fabrics and fibers, applied in the field of non-woven fabrics and filters, which can solve the problems of low collection efficiency and achieve the effect of excellent collection efficiency and small fiber diameter

Active Publication Date: 2020-11-10
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is known that the smaller the particle size, the lower the capture efficiency

Method used

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  • Non-woven fabric and filter
  • Non-woven fabric and filter
  • Non-woven fabric and filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0216] 99.0 parts by mass of Achieve 6936G2 (product name) (manufactured by ExxonMobil, weight-average molecular weight: 55,000 propylene-based polymer, MFR; 1550 g / 10 minutes) as linear polypropylene 1 (high molecular weight linear polypropylene) was mixed with Melt 1.0 parts by mass of WAYMAX MFX3 (product name) (manufactured by Nippon Polypro Co., Ltd., MFR; 9, long-chain branched polypropylene having a branched chain structure with 10 or more carbon atoms) as long-chain branched polypropylene (LCBPP). and mixed to obtain a resin composition.

[0217] Table 1 shows the shear viscosity, the uniaxial extensional viscosity, and the ratio of the uniaxial extensional viscosity to the shear viscosity (uniaxial extensional viscosity / shear viscosity) of the obtained resin composition. In addition, the uniaxial extensional viscosity and shear viscosity were measured by the method mentioned above.

[0218] The resin composition obtained above was supplied to a die head, and from a d...

Embodiment 2～ Embodiment 4 and comparative example 1～ comparative example 3

[0221] (Example 2-Example 4 and Comparative Example 1-Comparative Example 3, Comparative Example 5 and Comparative Example 6)

[0222]In Example 1, except having changed the ratio of the composition of the resin composition shown in Table 1, it carried out similarly to Example 1, and obtained the melt blown nonwoven fabric. Table 1 shows the physical property values ​​of the obtained resin composition and melt-blown nonwoven fabric, respectively.

[0223] In addition, the uniaxial extensional viscosity, the shear viscosity, and the average fiber diameter were measured and calculated by the above-mentioned methods.

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Abstract

A non-woven fabric comprising fibers, wherein the fibers have a uniaxial elongational viscosity of 430 Pa*s to 1200 Pa*s as measured at 160 DEG C, with a 2.5*102(1 / sec) elongation strain rate, and theproportion of the uniaxial elongational viscosity (Pa*s) to the shear viscosity (Pa*s) as measured at 160 DEG C, with a 2.5x102(1 / sec) shear strain rate, is 35 to 65.

Description

technical field [0001] This disclosure relates to nonwovens and filters. Background technique [0002] Nonwoven fabrics produced by the meltblown method (hereinafter also referred to as "melt blown (melt blow) nonwoven fabrics" or "melt blown (melt blown) nonwoven fabrics.") Compared with ordinary spunbonded nonwoven fabrics , can thin the fibers constituting the nonwoven fabric, so it is excellent in softness, uniformity and compactness. Therefore, the melt-blown nonwoven fabric is used alone or laminated with other nonwoven fabrics, and is used for liquid filters, air filters and other filters, sanitary materials, medical materials, agricultural covering materials, civil engineering materials, building materials, oil Absorbent materials, automotive materials, electronic materials, separators, clothing, packaging materials, sound-absorbing materials, etc. [0003] Fibers of thermoplastic resins such as polypropylene and polyethylene are known as fibers constituting the no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/16B01D39/16D04H3/007
CPCD04H3/007D04H3/16B01D2239/1233B01D2239/0622B01D39/163B01D2239/0654B01D2239/065B01D39/18B01D2239/0627B01D2239/1291B01D2239/1208B01D2239/1216B01D39/08B01D39/1623B01D2239/0618D10B2321/022D10B2505/04
Inventor 饭场康三鞠谷雄士宝田亘波多野翔
Owner MITSUI CHEM INC
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