CN1565702A - Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same - Google Patents
Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same Download PDFInfo
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- CN1565702A CN1565702A CN 03141013 CN03141013A CN1565702A CN 1565702 A CN1565702 A CN 1565702A CN 03141013 CN03141013 CN 03141013 CN 03141013 A CN03141013 A CN 03141013A CN 1565702 A CN1565702 A CN 1565702A
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- efficiency filtering
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Abstract
The invention relates to a high efficiency filtering material and its making method and the medical protective clothes made thereof. High efficiency filtering material consists of superfine polypropylene melt-blown material and the reinforced base, fibre average fineness of superfine polypropylene melt-blown material is below 0.3mum, standard of said material is 20-80g/m#+[2]; and the mentioned reinforced base is polypropylene long fibre non-woven cloth. The method for making high efficiency filtering material includes the following steps: extruding polypropylene polymers into a multi-position extrusion nozzle by a screw extruder; super extruding by high speed hot gas flow, and forming superfine fibre; cool forming by passing 10cm cool air layer; making superfine polypropylene melt-blown material by a collection device; combining superfine polypropylene melt-blown materials and the reinforced base and then forming high efficiency filtering material. The medical protective cloth has good permeability and virus preventing performance.
Description
Technical field
The articles for use that the present invention relates to a kind of high-efficiency filtering material and manufacture method thereof and make of this filter material are particularly about a kind of ultra tiny fibre with high-efficiency filter material and manufacture method thereof and with the medical protection clothes of this ultra tiny fibre with high-efficiency filter material making.
Background technology
The employed material of selling on the present China market of medical protection clothes, mainly contain three classes: common non-woven fabric, rubber or coating fabric, flash evaporation one-shot forming filter material, the protective clothes made of common non-woven fabric wherein, protection efficiency to virus is very low, effective virus-isolating, its protection efficiency has only about 40%, can not satisfy the minimum requirements of national standard; The protective garment that rubber or coating fabric are made, its protection effect is better, but it is ventilative, water vapour permeability is very poor, and comfort property is bad, can't satisfy the medical worker and especially wear needs under summer extremely hot condition; The filter material that adopts the flash evaporation one-shot forming to make, its barrier propterty is better, but the protection uniformity of its lining is relatively poor, the same position filter efficiency height that lining has, and some position is but very low.Medical department, especially the infectious disease medical department and the epidemic prevention department the medical worker, when defence infection venereal disease poison or germ, the employed material of above-mentioned existing medical protection clothes, often do not reach effective protection effect, as China 2003 the medical worker who resists SARS one line, be the effectively infringement of defence SARS virus, often have to put on and comprise that four layers of operating coat, protective garment, barrier gown, disposable barrier gowns etc. isolate clothes, wherein have at least 1 to 2 layer to make by gas impermeable materials such as plastics or rubber.The medical worker dresses above-mentioned protective clothes and cap, mouth mask, rubber gloves etc. and wraps up oneself tight, do not go out 5 minutes will be soaked with sweat, have a strong impact on the medical worker and be operate as normal such as the patient has an injection, draws blood, transfusion, more some medical worker is owing to wear these protective gears for a long time, occur uncomfortable in chest, perspire in a large number even collapse and fall in a swoon.The hospital of accepting the SARS patient for medical treatment is in order to maintain the circulation of air, prevent the infection of SARS virus, the ventilation of generally all will windowing of ward in the isolated area, and central air-conditioning is also closed for preventing that virus from spreading, at this moment under the situation of weather sweltering heat, the problem of the saturating wet steam permeability difference of the medical protection clothes that existing material is made is more and more outstanding, is difficult to adapt to the requirement of heatstroke prevention.Therefore develop the problem that a kind of good, comfortable and easy to wear new material of vapour performance that drenches is used to make the medical protection clothes and more and more become the task of top priority.
At present, the fibrous filter that adopts conventional melt-blown process to produce, can only accomplish Asia level efficiently at present as the air filter material, this is in thick effects, middle effect, high-medium efficient, Asia during efficiently and efficiently series is classified, only accomplished degree preferably, but accomplish that the small virus of 0.07 μ m is had good filter protection effect, the existing fibrous filter of conventional melt-blown process production that adopts also can't reach.
Summary of the invention
The purpose of this invention is to provide a kind of ultra tiny fibre with high-efficiency filter material.
Another object of the present invention provides a kind of manufacture method of ultra tiny fibre with high-efficiency filter material.
Another purpose of the present invention provides good, the comfortable and easy to wear medical protection clothes of moisture-penetrable ventilated performance that the ultra tiny fibre with high-efficiency filter material of a kind of usefulness is made.
For achieving the above object, the present invention takes following technical scheme:
A kind of high-efficiency filtering material is characterized in that: be meltblown into ultra tiny fiber by polypropylene chip, and compound enhancing base material forms, the average fineness of described ultra tiny fiber is below the 0.3 μ m; The quantitative specification of described ultra tiny fiber is 20～80g/m
2,
The quantitative specification of described ultra tiny fiber is 45～60g/m
2Better.
The quantitative specification of described ultra tiny fiber is 45g/m
2Best.
Described enhancing base material is that polypropylene filament yarn does not have anti-cloth; The specification of described polypropylene filament yarn nonwoven is 25～30g/m
2
A kind of manufacture method of high-efficiency filtering material is: get the high fusion index polypropylene chip, put into screw extruder; Polyacrylic polymer in the described screw extruder is squeezed in the multidigit spinneret of ejecting device; The pressed gas of producing by air compressor, after being heated by gas heater, spray to the fiber of extruding spinneret with high speed then, with its super times drawing-off, form ultra tiny fiber, carry out cooling and shaping through the layer of cold gas of 10cm distance then, after gathering-device is made ultra tiny polypropylene fibre melt-blown material, described ultra tiny polypropylene fibre melt-blown material is combined with each other with strengthening base material, makes high-efficiency filtering material.
The fabrication process parameters of described high-efficiency filtering material is: the pp material melt index is 1200MFR in the described screw extruder, and the air themperature that described air compressor is supplied with is 260 ℃, and gas velocity is 550m/s; Described cooling air output is 55%, described air compressor measuring pump speed 60RPM, suction air volume is 65% under the described gathering-device, last suction air volume is 60%, the gathering speed 24m/min of described gathering-device, described ultra tiny polypropylene fibre melt-blown material is 2 atmospheric pressure with the composite pressure that strengthens base material, 95 ℃ of setting temperatures.
A kind of medical protection clothes of making of high-efficiency filtering material, it is characterized in that: protective clothes is made up of cap, upper garment, trousers, the pin mouth of the cap mouth of described cap, the cuff of upper garment and trousers adopts elasticity to close up, described cap rear portion is provided with on one the cap mouth and just regulates and stumble, and the junction at described each position adopts five layers to collude backfin side seam mode and connect.
Described cap, upper garment and trousers can fuse, and also can be splits.
The present invention is owing to adopt above technical scheme, and it has the following advantages:
(1) the ultra tiny polypropylene fibre meltblown fibers of the present invention novel production process, compare with the fiber of conventional melt blown technology production, average fineness can be brought up to below the 0.3 μ m by 2～10 μ m, and fiber surface area is increased, and the fiber fine footpath uniformity and Electrostatic Absorption effect have raising significantly.
(2) the ultra tiny fibre diameter of ultra tiny polypropylene fibre melt-blown material fibre web becomes logarithm normal distribution, by adopting new production technology, makes the fiber of identical filament number that different distributions be arranged in fibre web.
(3) ultra tiny polypropylene fibre melt-blown material is the fixed voluntarily mixed and disorderly fiber assembly of ultra tiny fiber, though fiber net structure anisotropy, but random distribution is more even, superfine fibre random alignment in its fiber, form the large quantity micropore crack, though fibre web is more fluffy, fiber is overlapping, arranges density into the net and can accomplish permeable watertight.
(4) ultra tiny polypropylene fibre melt-blown material has acid and alkali-resistance, protection against the tide, characteristics such as nontoxic.The hydroscopicity of material is zero, can protection against the tide not go mouldy.
(5) protective garment that utilizes ultra tiny polypropylene fiber high-efficiency filtering material to make has excellent barrier propterty, high ventilation, wet ability thoroughly, and Air permenbility is greater than 70mm.s, and vapor transfer rate is greater than 11000g/m
2.d, protection efficiency improves more than 20% than national standard greater than 90%, under the prerequisite of effectively protection virus, has improved snugness of fit greatly.Its integrated protection performance meets the requirement of GB GB19082-2003, is particularly suitable for extremely hot environment use in summer.
Description of drawings
Fig. 1 is a high-efficiency filtering material manufacturing process flow schematic diagram of the present invention
Fig. 2 is a medical protection clothes front schematic view of the present invention
Fig. 3 is the local enlarged diagram of Fig. 2
Fig. 4 is a medical protection clothes schematic rear view of the present invention
Fig. 5 is the local enlarged diagram of Fig. 4
Fig. 6 is that five layers of the present invention collude backfin side seam structural representation
The specific embodiment
As shown in Figure 1, getting melt index is the polyacrylic polymer section of 1200MFR, puts into screw extruder; In measuring pump speed is under the condition of 60RPM, and the pressed gas of being produced by air compressor is by being heated to be 260 ℃ behind the gas heater; Screw extruder squeezes into the polyacrylic polymer of fusion in the ejecting device on the spinneret, is the hot-air drawing-off of 550m/s through air velocity, is routed to then on the gatherer, forms fibre fineness and reaches that 0.3 μ m is following, quantitatively specification is 20～80g/m
2Ultra tiny fibre with high-efficiency filter material.Suction air volume is 65% under the gathering-device at this moment, and last suction air volume is 60%, and the cooling air output is 55%.With ultra tiny polypropylene fiber high-efficiency filtering material, and be 25～30/m as the specification that strengthens base material
2Polypropylene filament yarn do not have anti-cloth, be that 2 atmospheric pressure, temperature are to carry out compoundly under 95 ℃ the condition at pressure, through typing, just become ultra tiny fibre with high-efficiency filter material of the present invention again.
The production technology of high-efficiency filtering material provided by the invention, compare with the fiber of conventional melt blown technology production, fineness can be brought up to below the 0.3 μ m by 2～10 μ m, and under this ultra tiny state, fiber surface area is very big, the fiber fine footpath uniformity and Electrostatic Absorption effect all have raising significantly, adopt polypropylene filament yarn not have anti-cloth as strengthening base material, can improve the intensity of high-efficiency filtering material again greatly.The main performance of ultra tiny fibre with high-efficiency filter material sees Table 1:
Table 1
| Interventions Requested | Measurement unit | The standard gauge definite value | Detected value | |
| Fracture strength | Vertically | ????N | ????≥45 | ????75 |
| Laterally | ????55 | |||
| Percentage elongation | Vertically | ????％ | ????30 | ????35 |
| Laterally | ????64 | |||
| Air permenbility | ???mm.s | ????- | ????90 | |
| Vapor transfer rate | ???g/m 2d | ????≥2500 | ????11000 | |
| Surface density of charge | ???μC/m 2 | ????≤7 | ????6.6 | |
| Hydrostatic pressing | ???Kpa | ????≥1.67 | ????6.0 | |
| Getting wet property | Level | ????≥3 | ????3 | |
| Protection efficiency | ???％ | ????≥70 | ????95 | |
| Synthetic blood penetrates | Do not penetrate | Do not penetrate | ||
Shown in Fig. 2～5, the ultra tiny fibre with high-efficiency filter material of the present invention can be used as the lining of medical protection clothes, is 45g/m such as adopting quantitative specification
2Material of the present invention make the medical protection clothes that are used to protect virus.The medical protection clothes are made up of cap 1, upper garment 2, trousers (not shown) etc., can make the each several part disjunctor, also can make split.The pin mouth of the cap mouth of cap 1, the cuff of upper garment 2 and trousers all adopts elasticity to close up, and is tight to guarantee sealing.Be provided with on one the cap mouth at cap 1 rear portion and just regulate and stumble 3, regulate stumble 3 and cap 1 on correspondence make nylon adherent buckle 4, by the difference of paste position, can regulate the position of cap mouth, in case on the cap mouth block eyes.The personnel that this structure can make the cap of protective clothes of the present invention can be fit to the size of various different head use.
As shown in Figure 6, the present invention all adopts each junction five layers of special mode of colluding the backfin side seam to connect, concealed wire one, and open-wire line one, open-wire line penetrates five aspect material, and the probability of particle penetration clothes such as virus is significantly reduced, and has improved the integral protection performance.
The present invention adopts high-efficiency filtering material medical protection clothes, and integral protection efficient is greater than 95%, and barrier propterty meets the requirement of standard GB 19082-2003.
Claims (9)
1, a kind of high-efficiency filtering material is characterized in that: be meltblown into ultra tiny fiber by polypropylene chip, and compound enhancing base material forms, described ultra tiny fiber average fineness is below the 0.3 μ m, and the quantitative specification of filter material is 20～80g/m
2
2, a kind of high-efficiency filtering material as claimed in claim 1 is characterized in that: the quantitative specification of described ultra tiny polypropylene fibre material is 45～60g/m
2
3, a kind of high-efficiency filtering material as claimed in claim 1 or 2, the quantitative specification that it is characterized in that described ultra tiny polypropylene fibre melt-blown material is 45g/m
2
4, as claim 1 or 2 or 3 described high-efficiency filtering materials, it is characterized in that: described enhancing base material is that polypropylene filament yarn does not have anti-cloth; The specification that described polypropylene filament yarn does not have anti-cloth is 25～35g/m
2
5, a kind of manufacture method of high-efficiency filtering material is characterized in that: get the high fusion index polypropylene chip, put into screw extruder; Polyacrylic polymer in the described screw extruder is squeezed in the multidigit spinneret; The pressed gas of producing by air compressor, by being heated behind the gas heater, spray to the fiber of extruding spinneret with high speed then, with its super times drawing-off, form ultra tiny fiber, carry out cooling and shaping through the layer of cold gas of 10cm distance then, after gathering-device is made ultra tiny polypropylene fibre melt-blown material, described ultra tiny polypropylene fibre melt-blown material is combined with each other with strengthening base material, makes high-efficiency filtering material.
6, the manufacture method of high-efficiency filtering material as claimed in claim 5, it is characterized in that: the fabrication process parameters of described high-efficiency filtering material is: the pp material melt index is 1200MFR in the described screw extruder, the air themperature that described air compressor is supplied with is 260 ℃, and gas velocity is 550m/s; Described cooling air output 55%, described measuring pump speed 60RPM, suction air volume is 65% under the described gathering-device, and last suction air volume is 60%, and described ultra tiny polypropylene fibre melt-blown material is 2 atmospheric pressure with the composite pressure that strengthens base material, 95 ℃ of setting temperatures.
7, a kind of medical protection clothes of making of high-efficiency filtering material, it is characterized in that: protective clothes is made up of cap, upper garment, trousers, the pin mouth of the cap mouth of described cap, the cuff of upper garment and trousers adopts elasticity to close up, described cap rear portion is provided with on one the cap mouth and just regulates and stumble, and the junction at described each position adopts five layers to collude backfin side seam mode and connect.
8, the medical protection clothes of making of high-efficiency filtering material as claimed in claim 7, it is characterized in that: described cap, upper garment and trousers fuse.
9, the medical protection clothes of making of high-efficiency filtering material as claimed in claim 7 is characterized in that: described cap, upper garment and trousers are split.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141013 CN1286543C (en) | 2003-06-13 | 2003-06-13 | Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141013 CN1286543C (en) | 2003-06-13 | 2003-06-13 | Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1565702A true CN1565702A (en) | 2005-01-19 |
| CN1286543C CN1286543C (en) | 2006-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03141013 Expired - Fee Related CN1286543C (en) | 2003-06-13 | 2003-06-13 | Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905101A (en) * | 2010-07-30 | 2010-12-08 | 杭州电子科技大学 | Method for preparing melt-blown polypropylene electret filter material |
| CN103638746A (en) * | 2013-12-17 | 2014-03-19 | 佛山市斯乐普特种材料有限公司 | Efficient low-resistance spunbonded nonwoven filter material, production equipment and manufacturing method thereof |
| CN108274855A (en) * | 2018-03-05 | 2018-07-13 | 南通汇优洁医用材料有限公司 | A kind of non-woven fabrics of good permeability |
| CN113652798A (en) * | 2020-05-12 | 2021-11-16 | 南通东屹高新纤维科技有限公司 | Manufacturing process of antistatic protective clothing fabric |
-
2003
- 2003-06-13 CN CN 03141013 patent/CN1286543C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905101A (en) * | 2010-07-30 | 2010-12-08 | 杭州电子科技大学 | Method for preparing melt-blown polypropylene electret filter material |
| CN101905101B (en) * | 2010-07-30 | 2012-03-21 | 杭州电子科技大学 | Method for preparing melt-blown polypropylene electret filter material |
| CN103638746A (en) * | 2013-12-17 | 2014-03-19 | 佛山市斯乐普特种材料有限公司 | Efficient low-resistance spunbonded nonwoven filter material, production equipment and manufacturing method thereof |
| CN103638746B (en) * | 2013-12-17 | 2015-06-03 | 佛山市斯乐普特种材料有限公司 | Efficient low-resistance spunbonded nonwoven filter material, production equipment and manufacturing method thereof |
| CN108274855A (en) * | 2018-03-05 | 2018-07-13 | 南通汇优洁医用材料有限公司 | A kind of non-woven fabrics of good permeability |
| CN113652798A (en) * | 2020-05-12 | 2021-11-16 | 南通东屹高新纤维科技有限公司 | Manufacturing process of antistatic protective clothing fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1286543C (en) | 2006-11-29 |
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Granted publication date: 20061129 Termination date: 20120613 |