CN1286542C - Highly effective filter medium and its manufacturing method and medical mask manufactured by the same - Google Patents
Highly effective filter medium and its manufacturing method and medical mask manufactured by the same Download PDFInfo
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- CN1286542C CN1286542C CN 03141012 CN03141012A CN1286542C CN 1286542 C CN1286542 C CN 1286542C CN 03141012 CN03141012 CN 03141012 CN 03141012 A CN03141012 A CN 03141012A CN 1286542 C CN1286542 C CN 1286542C
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- efficiency filter
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Abstract
The present invention relates to high efficiency filter media, a manufacturing method thereof and a medical protective breathing mask manufactured by the high efficiency filter media. The present invention is characterized in that the filter media are made from polypropylene fiber super micro fibers by permanent polarization, and the average fineness of the super micro fibers is below 0.3 mu m; the quantitative specifications of the materials are from 60 to 80 g/m<2>; the permanent polarization quantity of the super micro fibers is 0.15kw. The present invention also comprises the manufacturing method of the high efficiency filter media and the medical protective breathing mask manufactured by the high efficiency filter media. Compared with fibers produced by a conventional melting and spraying technology, the fineness of the high efficiency filter media of the super micro fibers provided by the present invention is raised below 0.3 mu m from 2 to 10 mu m. Meanwhile, the high efficiency filter media of the super micro fibers of the present invention can effectively increase filtering efficiency under the precondition that air drag is not increased by the permanent polarization process, and protective properties are greatly increased. The medical protective breathing mask which is manufactured by the high efficiency filter media is compositely sewed by an outer layer which is a filament non-woven fabric with water resistance, a middle layer which is the high efficiency filter media of the super micro fibers and an inner layer which is antisepsis gauze. The medical protective breathing mask uses flexible spatial structure design, and satisfies the sealing and protecting requirements of different facial forms.
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 protective mask of this ultra tiny fibre with high-efficiency filter material making.
Background technology
Present all kinds of mouth masks of selling on the China market, quality, performance are very different, general surgery plane face mask for example, warp detects on the TSI-8130 instrument, under the 32L/min flow, the NaCl method, filter efficiency has only about 20%.Such mouth mask can only be said so and can be prevented dust, and the medical worker is not had protective action, and is particularly invalid especially to droplet transmission, airborne virus.The cotton cloth respirator that other various hospitals use, testing result sees Table 1:
Table 1: the performance test data of cotton cloth respirator (TSI-8130 NaCl method)
| The number of plies | Flow (rise/minute) | Resistance | Transmitance |
| 8 layers | 32 | 0.3 | 94.6 |
| 12 layers | 32 | 0.3 | 94.4 |
| 16 layers | 32 | 0.3 | 89.6 |
Standard (NIOSH standard) according to American National employment security health general administration (National Institute for Occupational Ssfety andHealth) formulation, mouth mask can be divided into N, R, P three major types, they represent three kinds of different protection object: N respectively is non-oiliness particle, R, P then are the oiliness particle, but the protection oiliness particle effect of R level can not surpass 8 hours, and the P level does not have this restriction.This each class of three major types mouth mask has the standard of three kinds of filtering efficiencies: promptly 95 (95%), 99 (99%), 100 (99.97%), therefore have the mouth mask of 9 kinds of standard performances.Because biological particle belongs to non-oiliness particle more, so N95 is a most basic grade, and its expression can be protected non-oiliness particle under the 85L/min flow, assembles average grain diameter 0.26 μ, and the filter efficiency of counting particle diameter 0.07 μ particle diameter can reach 95%.
The standard (CEEN149:2001) of Europe protective mask is divided three rank: FFP1, FFP2, FFP3, and that different with Unite States Standard is its detection flow employing 95L/min, with DOP fry dried food ingredients dirt.
The standard of the protective mask of the up-to-date promulgation of China (GB19083-2003), adopt the standard guidelines of the U.S., just only to adopt a grade be N95 to China's standard, aerosol adopts the non-oiliness particle of NaCl, flow velocity is 85L/min, particle average grain diameter 0.26 μ, counting particle diameter 0.07 μ, require filter efficiency to satisfy at 95% o'clock, gas-flow resistance is not more than 35mmH
2O.China and American-European protective mask standard main performance index relatively see Table 2:
Table 2: the China and the American-European protective mask standard main performance index table of comparisons
| Rank | Flow L/min | Penetrance % | Resistance mmH 2O |
| N95 | 85 | ＜5 | ＜20 |
| N99 | 85 | ＜1 | ＜28 |
| FFP1 | 95 | ≤15 | ≤16 |
| FFP2 | 95 | ≤5 | ≤20 |
| FFP3 | 95 | ≤1 | ≤28 |
| N95 | 85 | ≤5 | ≤35 |
The cotton cloth respirator that all kinds of mouth masks of selling on the China market or hospital are commonly used, its barrier propterty is compared with the standard (GB19083-2003) of the protective mask of China up-to-date promulgation, or compares with American-European protective mask standard, and all there is a big difference.When especially resisting the SARS epidemic situation on a large scale in 2003 in China, the medical worker of one line, be the effectively infringement of defence SARS virus, often have to be with four layers of cotton cloth respirator, uncomfortable sensations the such as therefore medical worker can occur feeling suffocated, expiratory dyspnea, nonetheless the relatively poor cotton cloth respirator of this class barrier propterty still can not be resisted the infringement of virus effectively, causes medical worker's infection.Therefore develop the active demand that the medical protective mask that meets China's standard (GB19083-2003) N95 grade has fully become medical institutions and ruck.
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 the medical protective mask 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: formed through electret by the ultra tiny fiber of polypropylene fibre, the average fineness of described ultra tiny fiber is below the 0.3 μ m; The quantitative specification of the described ultra tiny fiber after electret is handled is 60～80g/m
2The electret amount of described ultra tiny fiber is 0.15kw.
The quantitative specification of described ultra tiny fiber is 60g/m
2Best.
A kind of manufacture method of high-efficiency filtering material is characterized in that: get the polypropylene chip that melt index is 1200MFR, put into screw extruder; In measuring pump speed is under the condition of 60RPM, and polyacrylic polymer in the described screw extruder is squeezed in the multidigit spinneret; The pressed gas of producing by air compressor, be heated to 260 ℃ by gas heater, speed with 550m/s sprays to the fiber of extruding spinneret then, with its super times drawing-off, forming average fineness is the following ultra tiny fiber of 0.3 μ m, and fiber is through the electret device then, is that the electret (electrostatic particle) of 0.15kw is imbedded in the fiber with the electret amount, after suction air volume 65% down, it is 60～80g/m that the gathering-device of last suction air volume 60% is made quantitative specification
2Ultra tiny fibre with high-efficiency filter material.
Described electret device is that the corona pin that two rows can produce electrostatic particle is installed between spinneret and gathering-device.
A kind of medical protective mask of making of high-efficiency filtering material, it is characterized in that: it comprises ultra tiny fibre with high-efficiency filter material intermediate layer, be arranged on the continuous yarn non-woven fabrics layer that described high-efficiency filtering material outside has water proofing property, be arranged on the antibacterial gauze layer of described high-efficiency filtering material the inside, described three forms a bite cover body through compound making, the upper limb of described mouth mask body is provided with a nose clip, be respectively arranged with two provincial highways on the both sides of described mouth mask body and the nose clip two layers of material, the bottom of described mouth mask body is protruded a cambered surface slightly downwards, the edge of described mouth mask body, adopt stretch knit cloth bound edge, four jiaos of described mouth mask body are provided with frenulum.
The present invention is owing to adopt above technical scheme, and it has the following advantages:
(1) the ultra tiny fibre with high-efficiency filter material of the present invention is compared with the fiber of conventional melt blown technology production, and 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 are greatly improved.
(2) the ultra tiny fibre diameter of ultra tiny fibre with high-efficiency filter 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 fibre with high-efficiency filter material under the prerequisite that does not influence air drag, can effectively improve filter efficiency by electret technology, and barrier propterty has raising significantly.
(4) make the medical protective mask that filter course is made with ultra tiny fibre with high-efficiency filter material, have excellent barrier propterty, filter efficiency and reach more than 95%, air resistance is less than 25mmH
2O.Its integrated protection performance meets the requirement of China's standard (GB19083-2003) N95 grade.
(5) medical protective mask of the present invention is by being provided with two provincial highways respectively on the material at opposite sides of mouth mask body both sides and nose clip, and with stretch knit cloth bound edge, therefore make whole mouth mask form a flexible stereo structure, flexible bound edge can be close on the face each position and not reveal any space, four provincial highways can make the middle part elongate again, and cooperate nose clip to make bridge of the nose place both can erect a breathing space, can keep good sealing again; The lower jaw place can be risen by the cambered surface of mouth mask bottom sealing pocket, how not to stay the space.The present invention not only can satisfy the airtight requirement of shelter of various different shapes of face, and can make medical personnel needn't wear which floor mouth mask, just can reach extraordinary protection effect.
Description of drawings
Fig. 1 is a high-efficiency filtering material manufacturing process flow diagram of the present invention
Fig. 2 is an electret device schematic diagram of the present invention
Fig. 3 is the medical protective mask structural representation that the present invention makes of high-efficiency filtering material
Fig. 4 is a user mode schematic diagram of the present invention
The specific embodiment
As shown in Figure 1 and Figure 2, ultra tiny fibre with high-efficiency making process of filtering material is: melt index for the section of 1200MFR polyacrylic polymer, is put into screw extruder 1; In measuring pump speed is under the condition of 60RPM, polyacrylic polymer is squeezed in the multidigit spinneret 2 of ejecting device; The pressed gas of producing by air compressor 3, after being heated to be 260 ℃ by gas heater, spray to the fiber of extruding spinneret 2 with high speed, with its super times drawing-off, form ultra tiny fiber, fiber is under corona pin 4 effects of 0.15kw through the electret device in the electret amount then, electret (electrostatic particle) is imbedded in the fiber, after the gatherer 5 of gathering-device and up-coiler 6 are made quantitative specification is 60～80g/m
2Ultra tiny fibre with high-efficiency filter material.At this moment, the following suction air volume 65% of gatherer 5, last suction air volume 60%.
Ultra tiny fibre with high-efficiency filter material novel production process 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 original 2～10 μ m, and under this ultra tiny state, fiber surface area is very big, and the fiber fine footpath uniformity and Electrostatic Absorption effect all have raising significantly.The main performance of the ultra tiny fibre with high-efficiency filter material of different size sees Table 3:
Table 3:
| Sequence number | Specification g/m 2 | Resistance mmH 2O | Transmitance % | Filter efficiency % |
| 1 | 60 | 20.10 | 5.73 | 94.27 |
| 2 | 60 electrets | 20.40 | 2.53 | 97.47 |
| 3 | 80 | 25.71 | 2.36 | 97.64 |
By last table as can be seen, through the present invention that electret is handled, under same resistance, transmitance reduces, and filter efficiency raises.Through comparing with every performance of China's medical protective mask standard (GB19083-2003) N95 grade, No. 2 ultra tiny fibre with high-efficiency filter materials are made medical protective mask in the option table 3, and its comprehensive technical performance and economic performance are better.It can effectively filter the bacterial virus of particle diameter more than 0.07 μ, and gas-flow resistance is far smaller than GB regulation 35mmH
2The requirement of O.
As Fig. 3, shown in Figure 4, medical protective mask 10 with ultra tiny fibre with high-efficiency filter material making, comprise ultra tiny fibre with high-efficiency filter material intermediate layer, be arranged on the continuous yarn non-woven fabrics layer that the outside has water proofing property, be arranged on the antibacterial gauze layer of the inside, trilaminate material forms a bite cover body 11 through compound making, the upper limb of mouth mask body 11 is provided with a nose clip 12, be respectively arranged with two provincial highways 13 on the both sides of mouth mask body 11 and nose clip 12 two layers of material, 14, constructed the solid surface of mouth mask, have certain space thereby formed between mouth mask 10 and the human body muzzle, reduced the initial air resistance of human body respiration.Stretch knit cloth bound edge 15 is adopted in the edge of mouth mask body 11, and four jiaos of mouth mask body 11 are provided with frenulum 16.Bound edge 15 has certain plasticity, under the tractive of frenulum 16, can increase the coating ability of 10 pairs of faces of mouth mask, and promptly mouth mask 10 can change with the human body face curve form, is close on it.The bottom of mouth mask body 11 is protruded a cambered surface 17 slightly downwards, make its under the cooperation of elasticity bound edge 15 closely pocket on lower jaw.
The medical protective mask 10 that the present invention makes of ultra tiny fibre with high-efficiency filter material, its protection efficiency 〉=95%, antibiotic rate 〉=95%, gas-flow resistance≤25mmH
2O meets national standard " medical protective mask specification requirement " (GB19083-2003) fully.
Claims (5)
1, a kind of high-efficiency filtering material is characterized in that: formed through electret by the ultra tiny fiber of polypropylene fibre, the average fineness of described ultra tiny fiber is below the 0.3 μ m; The quantitative specification of the described ultra tiny fiber after electret is handled is 60～80g/m
2The electret amount of described ultra tiny fiber is 0.15kw.
2, high-efficiency filtering material as claimed in claim 1 is characterized in that: the quantitative specification of described ultra tiny fiber is 60g/m
2
3, a kind of manufacture method of high-efficiency filtering material is characterized in that: get the polypropylene chip that melt index is 1200MFR, put into screw extruder; In measuring pump speed is under the condition of 60RPM, and polyacrylic polymer in the described screw extruder is squeezed in the multidigit spinneret; The pressed gas of producing by air compressor, be heated to 260 ℃ by gas heater, speed with 550m/s sprays to the fiber of extruding spinneret then, with its super times drawing-off, forming average fineness is the following ultra tiny fiber of 0.3 μ m, and fiber is through the electret device then, is that the electret of 0.15kw is imbedded in the fiber with the electret amount, after suction air volume 65% down, it is 60～80g/m that the gathering-device of last suction air volume 60% is made quantitative specification
2Ultra tiny fibre with high-efficiency filter material.
4, the manufacture method of a kind of high-efficiency filtering material as claimed in claim 3 is characterized in that described electret device is that two row's corona pins are installed between the gathering-device of the spinneret of ejecting device and gathering-device.
5, a kind of medical protective mask of making of the described high-efficiency filtering material of claim 1, it is characterized in that: it comprises ultra tiny fibre with high-efficiency filter material intermediate layer, be arranged on the continuous yarn non-woven fabrics layer that described high-efficiency filtering material outside has water proofing property, be arranged on the antibacterial gauze layer of described high-efficiency filtering material the inside, described three forms a bite cover body through compound making, the upper limb of described mouth mask body is provided with a nose clip, be respectively arranged with two provincial highways on the both sides of described mouth mask body and the nose clip two layers of material, the bottom of described mouth mask body is protruded a cambered surface slightly downwards, the edge of described mouth mask body, adopt stretch knit cloth bound edge, four jiaos of described mouth mask body are provided with frenulum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141012 CN1286542C (en) | 2003-06-13 | 2003-06-13 | Highly effective filter medium and its manufacturing method and medical mask manufactured by the same |
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|---|---|---|---|
| CN 03141012 CN1286542C (en) | 2003-06-13 | 2003-06-13 | Highly effective filter medium and its manufacturing method and medical mask manufactured by the same |
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| CN1565701A CN1565701A (en) | 2005-01-19 |
| CN1286542C true CN1286542C (en) | 2006-11-29 |
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| CN 03141012 Expired - Fee Related CN1286542C (en) | 2003-06-13 | 2003-06-13 | Highly effective filter medium and its manufacturing method and medical mask manufactured by the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102046242B (en) * | 2008-05-15 | 2012-11-07 | 尤妮佳股份有限公司 | Mask |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114263A (en) * | 2011-02-16 | 2011-07-06 | 徐国元 | Fluoroplastic electret medical bandage |
| CN102335450A (en) * | 2011-10-05 | 2012-02-01 | 徐国元 | Electret medical dressing |
| CN102499493A (en) * | 2011-10-10 | 2012-06-20 | 东华大学 | High-efficiency low-resistance nano anti-virus mask and production method thereof |
| US20150247281A1 (en) * | 2014-02-28 | 2015-09-03 | Avent, Inc. | Reduced medical wet packs, post steam sterilization |
| CN111140046A (en) * | 2020-03-16 | 2020-05-12 | 河南森源电气股份有限公司 | Mask processing system |
| CN113208208A (en) * | 2021-05-31 | 2021-08-06 | 河北纳嘉环保科技有限公司 | Aseptic medical gauze mask of antiviral nanofiber |
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2003
- 2003-06-13 CN CN 03141012 patent/CN1286542C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102046242B (en) * | 2008-05-15 | 2012-11-07 | 尤妮佳股份有限公司 | Mask |
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| CN1565701A (en) | 2005-01-19 |
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