CN1712100A - Production of high-density topping filtering material from three gradient - Google Patents
Production of high-density topping filtering material from three gradient Download PDFInfo
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- CN1712100A CN1712100A CN 200510046403 CN200510046403A CN1712100A CN 1712100 A CN1712100 A CN 1712100A CN 200510046403 CN200510046403 CN 200510046403 CN 200510046403 A CN200510046403 A CN 200510046403A CN 1712100 A CN1712100 A CN 1712100A
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Abstract
A process for preparing the trigradient high-density planar filter material includes such steps as overlaying the fine fibre mesh, cloth substrate and thick fibre mesh, needling, arranging the superfine fibre mesh on said fine fibre mesh, needling to obtain felt, thermally fixating its shape, singeing, and rolling.
Description
Technical field
The invention belongs to the technical field of non-weaving cloth.The present invention promptly provides a kind of method with non-weaving cloth technology manufacturing novel filter material, and this material can be used for aspects such as clarifying smoke material collection and equipment protection, can also be used for liquid-solid separation and gas-solid separation technology field.
Background technology
Filtering material is widely used in each department of national economy, and it mainly is as gas-solid separation and liquid-solid means of separating.Filtering material is divided into two classes usually by method for weaving: weave filtrate and non-woven filtrate, wherein non-woven filtrate is again main manufacture methods with the needle point method.Needle punched filter material has been widely used in the every profession and trades such as iron and steel, cement, nonferrous metallurgy, electric power, waste incineration, traffic as the core component of sack cleaner at present.
Needle punched filter material has three-dimensional structure, it by hold back, several dominant mechanisms such as inertia and diffusion can stop effectively that particle walks, after forming dust layer, by dust layer further effectively trapped particle, collect particle, reach the purpose of high efficiency filter.
The manufacture method of traditional needle punched filter material is that fiber is made two fleeces through combing, base cloth (or not putting into base cloth) the process pre-needling that weaves, main acupuncture will be put in the middle of two fleeces ... form the needle punched filter material semi-finished product after having a shave, again through singing, aftertreatment technology such as press polish makes needle punched filter material, its technological process is as shown in Figure 1.
But its filter efficiency of acupuncture filtering material that adopts traditional needling process to make is difficult to further raising, and to dust (or claim filter cake) to peel off effect also desirable not to the utmost.Want to make filtering material to have higher filter efficiency, dust is had the good effect of peeling off, also will reduce the resistance of filtrate itself simultaneously as much as possible and reduce the important topic that manufacturing cost is filtering material research always.
Summary of the invention
Purpose of the present invention is intended to propose a kind of new needling process method, and adopt technology of the present invention produce a kind of new structure, promptly have a filtering material of the highly dense surface layer micropore surface of three gradients.The filtering material of this structure has high filtration efficiency and dust is peeled off rate, and also has higher porosity.
The new technology that filtering material proposed by the invention is made, it is characterized in that: adopt that three fiber process equipments into the net form slightly simultaneously, thin three layers of different fleeces, these three layers of fleeces are made of superfine fibre, fine fibre and the fiber of the different fiber numbers of crude fibre respectively, that its procedure of processing (1) is earlier made crude fibre is off line, fine fibre is made the online and the adding base cloth that is situated between, and sends into the multiple tracks needing machine together and forms the acupuncture blank; (2) form the Nomex of the ultra-fine surface layer of three gradients again through acupuncture at fine fibre outside stack superfine fibre net, (3) with Nomex again through thermal finalization, singe, calendaring technology make at last have three gradient-structures, the ganoid filtering material of highly dense surface layer micropore form.
The new technology that filtering material proposed by the invention is made.Can also use spun-laced machine instead when the second time acupuncture superfine fibre net is placed on the upper strata, lower floor stings for the Nomex stock that is formed by fine fibre and crude fibre carries out water.With the Nomex behind the water thorn, again through heat setting, singe, calendaring technology promptly makes the highly dense surface layer micropore surface of three gradients filtering material.
Its fiber number of highly dense the employed crude fibre of filtering material of three gradients of the present invention is calculated in 2.5～7.0dtex scope by fixed length yarn count method, and the fine fibre fiber number is 1.0～2.5dtex, and its fiber number of superfine fibre is then below 1.0dtex.
Its material of highly dense the employed fiber of filtering material of three gradients of the present invention can be divided: several big classes of natural fiber, inorfil and organic synthetic fibers.They comprise: cotton (its code name is C), fiber crops (J), hair (W); Carbon fiber (Ca), glass (G), metallic fiber (M), terylene (PET), polypropylene fibre (PP), acrylic fibers (A), polyvinyl (PVA), continuous synthetic fibre (PA), aramid fiber (H), polyphenylene sulfide fibre (PPS), polyimide fiber (PI), polymerized acrylonitrile fiber (CA), homopolyacrylonitrile fibre (HA) and polytetrafluoroethylene fibre (F) etc.
Above-mentioned fiber Material Selection and collocation, must consider following multiple factor:
(1) physics of the material that will filter, chemical property;
(2) want physics, the chemical property of the material of elimination;
(3) acid-base value of working environment is a pH value;
(4) other functional requirement that filtering material is proposed is as: the static that disappears, hydrophobic, oleophobic and high temperature resistant, fire-retardant etc.
Highly dense its needling density of filtering material of three gradients of the present invention adds up to 300～700 pins/cm for twice
2
The high-density topping filtering material from three gradient made with method of the present invention has high filtration efficiency, particularly has the good effect of peeling off for dust, the resistance of filter material itself is not seen yet obvious increase, manufacturing cost is not high yet, range of application is very extensive, and analysis-by-synthesis its economic benefit of getting up is very considerable.
Description of drawings
Fig. 1 tradition is made the process chart of needle punched filter material;
The cross section intention of Fig. 2 filtering material structure of the present invention, I is the superfine fibre net among the figure, and II is a fine fiber webs, and III is base cloth, IV crude fibre net;
Fig. 3 production of high-density topping filtering material from three gradient process chart of the present invention---needle point method;
Fig. 4 production of high-density topping filtering material from three gradient process chart of the present invention---acupuncture, water acupuncture manipulation;
The specific embodiment
Below in conjunction with specific embodiment content of the present invention is further described and replenishes.
Embodiment 1
(1) elder generation adopts fiber process equipment into the net to form thin, the thick different two layer web up and down of intermediate course simultaneously the PPS fiber of PPS fiber, glass base cloth and the 3.5dtex of 1.5dtex, send into the multiple tracks needing machine together and form the acupuncture blank, needling density is 200 pins/cm
2(2) place the PPS fleece of 0.85dtex again on 1.5dtex PPS fleece, enter on several roads, back needing machine again and carry out Nomex, needling density is 200 pins/cm
2(3) Nomex carried out thermal finalization, singe, calendaring technology forms has three gradient-structures, the ganoid filtering material of highly dense surface layer micropore form.
Embodiment 2
(1) elder generation adopts thin, the thick different two layer web up and down that two fiber process equipments into the net form intermediate course simultaneously respectively with terylene (PET) fiber of terylene (PET) fiber, terylene (PET) base cloth and the 4.5dtex of 1.5dtex, send into the multiple tracks needing machine together and form the acupuncture blank, needling density is 250 pins/cm
2(2) place the PET fleece of 0.5dtex again on 1.5dtex PET fleece, enter and carry out the water thorn on the spun-laced machine, water thorn density is 100 pins/cm
2That (3) will make behind water thorn makes upper layer by superfine fibre, and fine fibre is done the intermediate layer, terylene base cloth and coarse-fibred compound spiked felt through heat setting, singe, press polish promptly makes three gradient high density surface layer micropore surface filtering materials.
Other embodiment, the embodiment 1 of technology and program is identical with 2, and only the fiber material is different with fiber number so illustrated in the mode of tabulating.
| The embodiment sequence number | Top layer superfine fibre net (＜1dtex) | Last layer superfine fibre net (1.0～2.5dtex) | Base cloth | Bottom crude fibre net (2.5～7.0dtex) | Same embodiment | Needling density pin/cm 2 |
| ??3 | 1.0dtex M fiber | 2.5dtex M fiber | The M base cloth | 7.0dtex M fiber | With 1 | ??①200 ??②100 |
| ??4 | 0.5dtex PI fiber | 1.5dtex PPS fiber | The F base cloth | 6.0dtex PPS fiber | With 1 | ??①300 ??②200 |
| ??5 | 1.0dtex Ca fiber | 2.4dtex G fiber | The F base cloth | 7.0dtex F fiber | With 1 | ??①200 ??②100 |
| ??6 | 1.0dtex F fiber | 2.5dtex PI fiber | The G base cloth | 7.0dtex F fiber | With 1 | ??①200 ??②100 |
| ??7 | 0.1dtex PPS fiber | 1.0dtex PI fiber | The PI base cloth | 2.5dtex CA fiber | With 1 | ??①200 ??②400 |
| ??8 | 0.5dtex A fiber | 2.5dtex PA fiber | The PA base cloth | 3.5dtex G fiber | With 2 | ??①200 ??②100 |
| ??9 | 1.0dtex PP fiber | 1.5dtex HA fiber | The W base cloth | 7.0dtex HA fiber | With 1 | ??①300 ??②200 |
| ??10 | 0.5dtex CA fiber | 2.5dtex G fiber | The Ca base cloth | 7.0dtex G fiber | With 1 | ??①400 ??②200 |
| ??11 | 1.0dtex PA fiber | 1.1dtex PP fiber | The G base cloth | 5.0dtex G fiber | With 2 | ??①400 ??②100 |
| ??12 | 0.1dtex H fiber | 1.1dtex Ca fiber | The M base cloth | 6.5dtex Ca fiber | With 1 | ??①500 ??②100 |
| ??13 | 0.1dtex PP fiber | 2.0dtex PET fiber | The PP base cloth | 7.0dtex F fiber | With 2 | ??①300 ??②100 |
| ??14 | 0.1dtex HA fiber | 1.2dtex W fiber | The C base cloth | 2.5dtex J fiber | With 1 | ??①300 ??②300 |
| ??15 | 0.1dtex CA fiber | 2.5dtex G fiber | The G base cloth | 3.5dtex PET fiber | With 2 | ??①300 ??②200 |
| ??16 | 1.0dtex PP fiber | 1.4dtex CA fiber | The W base cloth | 7.0dtex G fiber | With 1 | ??①500 ??②200 |
Above fiber code name all marks by the code name of the filtrate material in standard GB R625-2005 appendix A 1 table.
Claims (5)
1, a kind of manufacture method of high-density topping filtering material from three gradient, it is characterized in that: adopt that three fiber process equipments into the net form slightly simultaneously, thin different fleece, these three layers of fleeces are made of superfine fibre, fine fibre and crude fibre respectively, that its procedure of processing (1) is earlier made crude fibre is off line, fine fibre is made the online and the adding base cloth that is situated between, and sends into the multiple tracks needing machine together and forms the acupuncture blank; (2) form the ultra-fine surface layer Nomex of three gradients through acupuncture again at fine fibre outside stack superfine fibre, (3) with Nomex again through thermal finalization, singe, calendaring technology make at last have three gradient-structures, the filtering material of highly dense surface layer micropore form.
2,, it is characterized in that its procedure of processing (2) is for carrying out the water thorn with spun-laced machine to last layer superfine fibre, the following Nomex blank that forms for fine fibre, base cloth and crude fibre by the manufacture method of the described high-density topping filtering material from three gradient of claim 1.
3, by the manufacture method of claim 1,2 described high-density topping filtering material from three gradient, it is characterized in that its fiber number of said crude fibre is 2.5～7.0dtex, the fine fibre fiber number is 1.0～2.5dtex, and its fiber number of superfine fibre is 0.1～1.0dtex.
4,, it is characterized in that said material thick, thin and superfine fibre can be natural fiber, inorfil or organic synthetic fibers by the manufacture method of claim 1,2 described high-density topping filtering material from three gradient.
5, by the manufacture method of claim 1,2 described high-density topping filtering material from three gradient, it is characterized in that said filtrate needling density adds up to 300～700 pins/cm for twice
2
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| CN100409921C (en) * | 2006-05-30 | 2008-08-13 | 上海华成针刺材料有限公司 | Aromatic polyamide permeable filter felt |
| CN101837212A (en) * | 2010-05-26 | 2010-09-22 | 宋朋泽 | Polyphenylene sulfide glass fiber composite filter material and method for preparing same |
| CN101844014A (en) * | 2010-06-13 | 2010-09-29 | 福建南纺股份有限公司 | Needle punching spunlace non-woven multilayer composite filter material and preparation method thereof |
| CN101962876A (en) * | 2010-09-25 | 2011-02-02 | 李国华 | Process for manufacturing needled wool felt |
| CN102240483A (en) * | 2011-05-30 | 2011-11-16 | 浙江宇邦滤材科技有限公司 | Industrial filter material and manufacturing method thereof |
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