CN103284355A - Manufacturing method of dustproof respirator - Google Patents
Manufacturing method of dustproof respirator Download PDFInfo
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- CN103284355A CN103284355A CN2013101493143A CN201310149314A CN103284355A CN 103284355 A CN103284355 A CN 103284355A CN 2013101493143 A CN2013101493143 A CN 2013101493143A CN 201310149314 A CN201310149314 A CN 201310149314A CN 103284355 A CN103284355 A CN 103284355A
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Abstract
The invention discloses a manufacturing method of a dustproof respirator. The manufacturing method comprises the following steps: wrapping layer manufacturing, that is, manufacturing a wrapping layer of the dustproof respirator; adhesive adding, that is, manufacturing a filtering layer containing an adhesive; and dustproof respirator forming, that is, arranging the filtering layer in the wrapping layer to form the dustproof respirator. The invention further discloses the dustproof respirator obtained through the manufacturing method provided by the invention. The dustproof respirator is harmless to human bodies, has the advantages of high air permeability, long quality guarantee period and good dust-removing effect, and particularly has a PM 2.5 (Particulate Matter 2.5) removing effect up to 95%.
Description
Technical field
The present invention relates to a kind of anti-dust respirator, relate in particular to and a kind ofly contain silicone oil or contain silicone oil and the mouth mask of nanocrystal cellulose and preparation method thereof.
Background technology
Quickening along with the urban modernization paces, various industrial production have been carried out Rapid Expansion, industrial pollution increases the weight of, thereby particulates concentration is constantly increased, especially along with developing of automobile industry, the motor vehicle exhaust emission amount rolls up, serious destruction air quality, influenced health.The fine particle of particle diameter in molecule≤2.5 μ m (being PM2.5) can be suspended in the air for a long time, if long-term a large amount of suction can have a strong impact on human lung's function, suffer from PUD D easily, when the excessive concentration of PM2.5 even can cause human body death.Can remove effectively that the method for PM2.5 is to wear the mouth mask that can filter out PM2.5 in the air.The mouth mask of anti-PM2.5 generally adopts charcoal absorption to filter out and sucks the airborne PM2.5 of human body in the market; but the molecule that active carbon itself exists can influence the smoothness of breathing; the long-term mouth mask that contains active carbon that uses, the molecule that active carbon itself contains can cause certain influence to human lung's health.There have some mouth masks to make in addition to be hemispherical, even some translator, and then there is volume in these mouth masks greatly and defectives such as heaviness or complex structure.
Therefore, be desirable to provide a kind of harmless, simple in structure easy-to-use, gas permeability is high and remove the needs that the effective mouth mask of PM2.5 satisfies people.
Summary of the invention
For this reason, the present invention proposes a kind of at least part of anti-dust respirator that addresses the above problem that can address the above problem and preparation method thereof.
A kind of method of making anti-dust respirator is provided according to an aspect of the present invention, has comprised:
The surrounding layer making step, the surrounding layer of making anti-dust respirator;
Adhesive adds step, makes the filter course that comprises adhesive; And
Anti-dust respirator forms step, described filter course is arranged in the described surrounding layer, to make described anti-dust respirator.
Make the method for anti-dust respirator according to the present invention, described filter course generally mediates, thickness generally between 1.0mm～10mm, preferred 5mm; Described filter course is loose reticular fiber structure, soaks into adhesive (adhesive preferable methyl silicone oil, preferred ethyl silicon oil further) and constitutes solid netted air filtration layer afterwards.The solid netted filter course that comprises adhesive has greatly increased the collision opportunity of particulate, and the easier fine particle that captures is sticked when particulates touch adhesive adhesive, thereby plays the purpose of dedusting.In addition, the preferred nonwoven of surrounding layer, generally in the above and below of filter course two-layer nonwoven is set respectively, described filter course is clipped in the middle, and the technology of the preparation mouth mask by routine is sealed filter course, to prevent that silicone oil from leaking out, influence attractive in appearance and the mouth mask quality, and play certain dedusting effect.In addition in anti-dust respirator forms step, at the two-layer nonwoven that respectively compresses up and down of filter course, described nonwoven can be each one deck at least up and down, and preferably each is two-layer up and down.Described nonwoven general thickness is 100 μ m～500 μ m, preferred 300 μ m, and the preferred 2.0 μ m in aperture, and the nonwoven that forms is knitted in preferred polypropylene fibre silk (PP) spray.Selected nonwoven aperture is moderate, can make breathe smooth and easy, and can prevent effectively that adhesive (as silicone oil) from oozing out, and guaranteed product quality and outward appearance.In addition, in the layer of non-woven fabric near human body skin, the cloth that preferred employing is textile or pure viscose rayon is made into is as the bottom surface.After preparing solid netted air filtration layer, clamp described filter course with nonwoven, put into the ear rope, extrude mouth mask with the high temperature sealing machine, carry out cobalt-60 irradiation-sterilize, be packaged to be product.
Alternatively, the method according to this invention, wherein, it is that adhesive is added in the nonwoven that adhesive adds step, this step comprises:
Second soaking step (S1400) is put into adhesive with described nonwoven and was soaked 5-10 minute; And
Second centrifugation step (S1500), with described nonwoven after in adhesive, soaking with the centrifugal 5-10 of 5000-10000 rev/min speed minute.
The preparation method of anti-dust respirator according to the present invention, carry out aforesaid operations when in filter course, adding adhesive (as silicone oil), after soaking 5-10 minute, carry out centrifugally operated sloughs unnecessary adhesive (as silicone oil) as far as possible, account for 1.0-1.6% at the percentage by weight of centrifugal back adhesive (as silicone oil) in filter course, generally account for 1.3%.Free adhesive (as silicone oil, especially methyl-silicone oil) is removed by centrifugal, effectively prevented anti-dust respirator deposit with use in have remaining adhesive (as silicone oil) to ooze out, thereby guaranteed product quality and outward appearance.
Alternatively, the method according to this invention wherein, comprised before described adhesive adds step further:
Nanocrystal cellulose adds step: nanocrystal cellulose is added in the nonwoven.
Alternatively, the method according to this invention, wherein said nanocrystal cellulose adds step and comprises:
First soaking step (S1100): described nonwoven was soaked 5-10 minute in the nanocrystal cellulose colloid aqueous solution of by weight 1-5%;
First centrifugation step (S1200): with described nonwoven after in the nanocrystal cellulose colloid aqueous solution, soaking with the centrifugal 5-10 of 5000-10000 rev/min speed minute;
Baking step (S1300): with described immersion nanocrystal cellulose colloid aqueous solution and centrifugal after nonwoven 105-110 ℃ of oven dry.
According to anti-dust respirator of the present invention, can also on the basis that comprises adhesive (as silicone oil), add nanocrystal cellulose.Described nanocrystal cellulose refers to nano level, the cellulose of degree of crystallinity between 60-85%.Described nanocrystal cellulose has the effect of suction and oil suction, therefore soaking adhesive (as silicone oil) after nonwoven was soaked nanocrystal cellulose again can make adhesive be adsorbed onto uniformly on the nonwoven (especially to be adsorbed onto on the nanocrystal cellulose), constitute good solid netted air filtration layer, make the air filtration layer can better absorb airborne fine particle, reach better dust removing effects.Nanocrystal cellulose is rectangular particle, general selection length is that 150-300nm, diameter are that 30-100nm, the degree of polymerization are the rod-like nano crystal fibre element of 160-180, preferred length is 200nm further, diameter 50nm, when the nanocrystal cellulose of this particle size range and length is attached to nonwoven, forms the space network of more intensive microcosmic, and the aperture of nonwoven is further dwindled, the probability that PM2.5 is passed through significantly reduces, so adsorption effect is better.In addition, through the nanocrystal cellulose that acid hydrolysis prepares, harmless, easy decomposition, pollution-free belongs to environmentally friendly material generally to select string (as cotton, fiber crops or wood pulp) for use.
The method according to this invention on the basis of having added adhesive (as silicone oil), when adding nanocrystal cellulose, generally is dispersed in nanocrystal cellulose in the water and makes colloidal solution.Generally by nanocrystal cellulose is dispersed in the water, carry out the colloid aqueous solution that homogeneous obtains nanocrystal cellulose during for 28-32MPa at pressure.With the nanocrystal cellulose colloid aqueous solution for preparing nonwoven is soaked, carry out centrifugal then and the oven dry processing.Contain the nanocrystal cellulose of 0.1%-1.0% by weight in the nonwoven through the solid netted air filtration layer after the above-mentioned processing, be generally 0.5%.
Alternatively, the method according to this invention, described adhesive is at least a in following: silicone oil, glycerine, propane diols, molecular weight are polyethylene glycol and the vegetable oil of 200-400.
The method according to this invention, the preferred silicone oil of adhesive, especially preferable methyl silicone oil.Described methyl-silicone oil is a kind of tasteless, nontoxic, safe and harmless to human body high molecular polymer, and its adsorption function to fine particle in the air also is best in addition.But selecting glycerine, propane diols, molecular weight is the polyethylene glycol of 200-400 and the effect that vegetable oil can reach dedusting too.More excellent at palmitic dust removing effects described in the vegetable oil, and harmless fully to human body.When adhesive selected silicone oil, glycerine, propane diols, molecular weight to be the polyethylene glycol of 200-400 or other plant oil, it sticked on the nonwoven, or when sticking on the nanocrystal cellulose, was not easy drying, therefore can keep permanently effective.
Alternatively, the method according to this invention, the length of described nanocrystal cellulose are that 150-300nm, diameter are 30-100nm, and preferably length is that 200nm, diameter are 50nm.
Alternatively, the method according to this invention, the degree of polymerization of described nanocrystal cellulose are 160-180.
Alternatively, the method according to this invention comprises the adhesive of 1.0-1.6% by weight and the nanocrystal cellulose of 0.1%-1.0% in the wherein said filter course.
This is the optimum weight percentage that absorbs adhesive and nanocrystal cellulose in the nonwoven, enough adhesive (as silicone oil) and the nanocrystal celluloses of nonwoven absorption so both can have been reached, reach the most effective dust removing effects, the nanocrystal cellulose of the absorption adhesive that can not contain free adhesive again and dissociate, prevent adhesive and the nanocrystal cellulose seepage of free state, influence the quality of product and attractive in appearance.
Alternatively, the method according to this invention, described nonwoven is that the aperture that forms with polypropylene fibre silk or polyethylene filament spray pressure is the network structure of 1.5-2.5 μ m.
Preparation method according to anti-dust respirator of the present invention, the nonwoven of selecting for use polypropylene fibre silk (PP) or polyethylene filament (PE) to make, general aperture is controlled between 1.5-2.5 μ m, and has network structure, common particulate can not only be removed, more PM2.5 can be effectively removed.
According to a further aspect in the invention, provide a kind of anti-dust respirator.
Anti-dust respirator according to the present invention is harmless, gas permeability is high, long shelf-life and good dedusting effect, especially can be up to more than 95% to the dust removing effects of PM2.5.
Description of drawings
By reading hereinafter detailed description of the preferred embodiment, various other advantages and benefit will become cheer and bright for those of ordinary skills.Accompanying drawing only is used for the purpose of preferred embodiment is shown, and does not think limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the preparation method according to the anti-dust respirator of one embodiment of the present invention;
Fig. 2 shows the schematic cross-section according to the anti-dust respirator of one embodiment of the present invention; Wherein,
The first upper strata nonwoven 1, the second upper strata nonwoven 2, filter course 3, second lower floor's nonwoven 4 and first lower floor's nonwoven 5;
Fig. 3 shows the SEM Electronic Speculum figure of the nonwoven that does not add nanocrystal cellulose and silicone oil;
Fig. 4 shows the SEM Electronic Speculum figure of the nonwoven that adds nanocrystal cellulose and silicone oil.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 shows the preparation method according to the anti-dust respirator of one embodiment of the present invention.According to this method, nonwoven is handled with nanocrystal cellulose earlier, at first enter step S1100 step: the nonwoven before soaking in adhesive, soaked 5-10 minute in the nanocrystal cellulose colloid aqueous solution of by weight 1%-5%; Enter the S1200 step then: with described nonwoven after in the nanocrystal cellulose colloid aqueous solution, soaking with 5000-10000 rev/min of centrifugal 5-10 minute; Enter the S1300 step afterwards: with described in the nanocrystal cellulose colloid aqueous solution, soak and centrifugal after nonwoven 105-110 ℃ of oven dry.Nonwoven after will handling in nanocrystal cellulose colloidal solution carries out treatment step in adhesive, perhaps directly nonwoven is carried out Processing of Preparation in adhesive and obtains filter course.Nonwoven after being about to handle in nanocrystal cellulose solution or directly nonwoven is carried out the operation of S1400 step is put into adhesive immersion 5-10 minute with nonwoven; Nonwoven after adhesive soaks is carried out the operation of S1500 step, with the nonwoven after soaking with the centrifugal 5-10 of 5000-10000 rev/min speed minute.Prepare solid netted air filtration layer.After preparing solid netted air filtration layer, clamp described solid netted air filtration layer with nonwoven, put into the ear rope, extrude mouth mask with the high temperature sealing machine, carry out cobalt-60 irradiation-sterilize, be packaged to be product.
To relate to parameter more for the preparation method of anti-dust respirator according to the present invention, and processing step is complicated, so specific embodiment is only as the exemplary illustration to specific implementation of the present invention, and do not constitute limiting the scope of the invention.To be described further as embodiment with the preparation method's of anti-dust respirator provided by the invention specific operation process below.
In addition, in the present invention, step S1400, step S1500 are the indispensable steps of preparation anti-dust respirator of the present invention, step S1100, S1200 and step S1300 are the steps that can select of three integral body, when solid netted air filtration layer is selected to add nanocrystal cellulose, select step S1100, S1200 and S1300, when not adding nanocrystal cellulose, then do not select these three steps.Therefore the embodiment of design obtains in the basis design that has comprised S1400 and S1500 in the present embodiment, has also comprised some conventional steps of preparation mouth mask in addition.
According to anti-dust respirator preparation method's of the present invention technological parameter, design following examples the present invention is carried out exemplary illustration.
Embodiment 1
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, at first produce solid netted air filtration layer 3.Selecting thickness for use is that 1000 operations of carrying out the S1400 step of netted acupuncture cotton nonwoven fabrics that form are knitted in the polypropylene fibre silk spray of 3mm, length 120mm and width 90mm: described nonwoven is put into methyl-silicone oil soaked 5 minutes; Then described nonwoven after soaking is carried out the operation of S1500 step in methyl-silicone oil, namely with 5000 rev/mins speed centrifugal 5 minutes, comprise 1% methyl-silicone oil by weight in the nonwoven of centrifugal back.After preparing solid netted air filtration layer, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
Embodiment 2
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, at first produce solid netted air filtration layer 3.Selecting thickness for use is that 1000 operations of carrying out the S1400 step of netted acupuncture cotton nonwoven fabrics that form are knitted in the polypropylene fibre silk spray of 5mm, length 120mm and width 90mm: described nonwoven is put into methyl-silicone oil soaked 10 minutes; Then described nonwoven after soaking is carried out the operation of S1500 step in methyl-silicone oil, namely with 10000 rev/mins speed centrifugal 10 minutes, comprise 1.6% methyl-silicone oil by weight in the nonwoven of centrifugal back.After preparing solid netted air filtration layer, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
Embodiment 3
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, at first produce solid netted air filtration layer 3.Selecting thickness for use is that 3mm, length are that 120mm and width are that the polyethylene filament spray of 90mm is knitted 1000 of netted acupuncture cotton nonwoven fabrics that form and carried out the S1100 step, in 3% nanocrystal cellulose colloid aqueous solution by weight, soaked 5 minutes, described nanocrystal cellulose colloid aqueous solution is that nanocrystal cellulose is dispersed in the water, the colloid aqueous solution of 1% the nanocrystal cellulose by weight that behind homogeneous under the pressure of 28MPa, prepares, the nanocrystal cellulose length of selecting for use is that 150nm, diameter are that 30nm, the degree of polymerization are 160; Nonwoven after will soaking in the nanocrystal cellulose colloid aqueous solution enters the S1200 step to carry out with the centrifugal 10 minutes operation of 5000 rev/mins speed; Described nonwoven after centrifugal is entered the S1300 step 105 ℃ of operations of drying, and the content of nanocrystal cellulose is for being 0.1% by weight in the nonwoven after the oven dry.The nonwoven that will carry out the nanocrystal cellulose immersion and carry out after centrifugal oven dry is handled carries out the further processing of methyl-silicone oil.The nonwoven of described oven dry carries out the operation of S1400 step: be about to described nonwoven and put into methyl-silicone oil immersion 5 minutes; Then described nonwoven after soaking is carried out the operation of S1500 step in methyl-silicone oil, namely with 5000 rev/mins speed centrifugal 10 minutes, comprise 1.3% methyl-silicone oil by weight in the nonwoven of centrifugal back.So far, solid netted air filtration layer 3 preparation are finished.After solid netted air filtration layer preparation finished, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, at first produce solid netted air filtration layer 3.Selecting thickness for use is that 5mm, length are that 120mm and width are that the polypropylene fibre silk spray of 90mm is knitted 1000 of netted acupuncture cotton nonwoven fabrics that form and carried out the S1100 step, in 3% nanocrystal cellulose colloid aqueous solution by weight, soaked 10 minutes, described nanocrystal cellulose colloid aqueous solution is that nanocrystal cellulose is dispersed in the water, the colloid aqueous solution of 3% the nanocrystal cellulose by weight that behind homogeneous under the pressure of 32MPa, prepares, the nanocrystal cellulose length of selecting for use is that 300nm, diameter are that 100nm, the degree of polymerization are 180; Nonwoven after will soaking in the nanocrystal cellulose colloid aqueous solution enters the S1200 step to carry out with the centrifugal 10 minutes operation of 10000 rev/mins speed; Described nonwoven after centrifugal is entered the S1300 step 110 ℃ of operations of drying, and the content of nanocrystal cellulose is 0.6% in the nonwoven after the oven dry.The nonwoven that will carry out the nanocrystal cellulose immersion and carry out after centrifugal oven dry is handled carries out the further processing of glycerine.The nonwoven of described oven dry carries out the operation of S1400 step: be about to described nonwoven and put into glycerine immersion 10 minutes; Then described nonwoven after soaking is carried out the operation of S1500 step in glycerine, namely with 10000 rev/mins speed centrifugal 10 minutes, comprise 1.2% glycerine by weight in the nonwoven of centrifugal back.So far, solid netted air filtration layer 3 preparation are finished.After solid netted air filtration layer preparation finished, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, at first produce solid netted air filtration layer 3.Selecting thickness for use is that 5mm, length are that 120mm and width are that the polyethylene filament spray of 90mm is knitted 1000 of netted acupuncture cotton nonwoven fabrics that form and carried out the S1100 step, in 4% nanocrystal cellulose colloid aqueous solution by weight, soaked 8 minutes, described nanocrystal cellulose colloid aqueous solution is that nanocrystal cellulose is dispersed in the water, the colloid aqueous solution of 4% the nanocrystal cellulose by weight that behind homogeneous under the pressure of 30MPa, prepares, the nanocrystal cellulose length of selecting for use is that 200nm, diameter are that 50nm, the degree of polymerization are 170; Nonwoven after will soaking in the nanocrystal cellulose colloid aqueous solution enters the S1200 step to carry out with the centrifugal 10 minutes operation of 8000 rev/mins speed; Described nonwoven after centrifugal is entered the operation that the S1300 step is dried at 105 degree, and the content of nanocrystal cellulose is 0.7% in the nonwoven after the oven dry.The nonwoven that will carry out the nanocrystal cellulose immersion and carry out after centrifugal oven dry is handled carries out the further processing of propane diols.The nonwoven of described oven dry carries out the operation of S1400 step: be about to described nonwoven and put into propane diols immersion 8 minutes; Then described nonwoven after soaking is carried out the operation of S1500 step in propane diols, namely with 8000 rev/mins speed centrifugal 10 minutes, comprise 1.5% propane diols by weight in the nonwoven of centrifugal back.So far, solid netted air filtration layer 3 preparation are finished.After solid netted air filtration layer preparation finished, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
Embodiment 6
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, at first produce solid netted air filtration layer 3.Selecting thickness for use is that 8mm, length are that 120mm and width are that the polypropylene fibre silk spray of 90mm is knitted 1000 of netted acupuncture cotton nonwoven fabrics that form and carried out the S1100 step, in 4.5% nanocrystal cellulose colloid aqueous solution by weight, soaked 7 minutes, described nanocrystal cellulose colloid aqueous solution is that nanocrystal cellulose is dispersed in the water, the colloid aqueous solution of 4.5% the nanocrystal cellulose by weight that behind homogeneous under the pressure of 29MPa, prepares, the nanocrystal cellulose length of selecting for use is that 240nm, diameter are that 80nm, the degree of polymerization are 175; Nonwoven after will soaking in the nanocrystal cellulose colloid aqueous solution enters the S1200 step to carry out with the centrifugal 10 minutes operation of 7000 rev/mins speed; Described nonwoven after centrifugal is entered the operation that the S1300 step is dried at 108 degree, and the content of nanocrystal cellulose is 0.7% in the nonwoven after the oven dry.The nonwoven that will carry out the nanocrystal cellulose immersion and carry out after centrifugal oven dry is handled carries out the further processing of polyethylene glycol.The nonwoven of described oven dry carries out the operation of S1400 step: being about to described nonwoven, to put into molecular weight be that the polyethylene glycol of 200-400 soaked 9 minutes; Then described nonwoven after soaking is carried out the operation of S1500 step in silicone oil, namely with 6000 rev/mins speed centrifugal 10 minutes, comprise 1.6% silicone oil by weight in the nonwoven of centrifugal back.So far, solid netted air filtration layer 3 preparation are finished.After solid netted air filtration layer preparation finished, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
Embodiment 7
According to the preparation method according to anti-dust respirator of the present invention shown in Fig. 1, when containing the large-scale industrial production of nano micro crystal cellulose-silicone oil anti-dust respirator, at first produce solid netted air filtration layer 3.Selecting thickness for use is 5mm, width is that the polypropylene fibre silk spray of 2m is knitted the netted acupuncture cotton nonwoven fabrics that forms and carried out the continued operation of S1100 and S1200 step, with the similar machine of paper machine roller press in carry out continuous immersion and roll extrusion process (being similar to the post processing of pulping and paper-making), in 4% nanocrystal cellulose colloid aqueous solution by weight, soak and carry out roll extrusion then and remove the remaining nanocrystal cellulose aqueous solution, described nanocrystal cellulose colloid aqueous solution is that nanocrystal cellulose is dispersed in the water, the colloid aqueous solution of 4% the nanocrystal cellulose by weight that behind homogeneous under the pressure of 30MPa, prepares, the nanocrystal cellulose length of selecting for use is 200nm, diameter is 50nm; Nonwoven after the described roll extrusion is entered the S1300 step dries at 105 ℃ with the drum of band superheated steam.The nonwoven that will carry out the nanocrystal cellulose immersion and carry out after the roll extrusion oven dry is handled carries out palmitic further processing.The nonwoven of described oven dry carries out the operation of S1400 and S1500 step: be about to described nonwoven and put into palm oil and soak continuous then roll extrusion, comprise 1.6% palm oil by weight in the nonwoven of centrifugal back.So far, solid netted air filtration layer 3 preparation are finished, and cut out according to the size among the embodiment 1.After solid netted air filtration layer preparation finished, the first upper strata nonwoven 1 and the second upper strata nonwoven 2 are positioned on the solid netted air filtration layer 3 as shown in Figure 2, second lower floor's nonwoven 4 and first lower floor's nonwoven 5 are positioned over the below of solid netted air filtration layer 3 and clamp solid netted air filtration layer 3, put into the ear rope then, extrude mouth mask with the high temperature sealing machine, mouth mask is carried out being packaged to be product behind cobalt-60 irradiation-sterilize.
Produced good permeability according to embodiment 1-6, specious, simple in structure, wear easily, harmless, dust removal efficiency is high, especially removes the efficient height of PM2.5, generally can reach the anti-dust respirator more than 95%.Can realize very high dustproof effect by the anti-dust respirator that embodiment 1-2 produces, more than 95%, and the interpolation of producing according to embodiment 3-7 the anti-dust respirator dust removing effects of nanocrystal cellulose higher, especially can be up to more than 98% except the effect of PM2.5.Can carry out mass according to embodiment 7 and produce on a large scale, produce harmless, simple in structure, wear and mouth mask that dust removal efficiency is high easily.And according to the production method of embodiment 1-7, simple for process, realize that easily mass produces on a large scale.Selected in the present invention in addition methyl-silicone oil, glycerine, propane diols, molecular weight be the polyethylene glycol of 200-400 and palm oil in each embodiment respectively as adhesive, it sticks on the nonwoven in embodiment 1 and 2, adhesive then sticks on the nanocrystal cellulose or has sticked on nonwoven and the nanocrystal cellulose in embodiment 3-7, adhesive (especially silicone oil) is not easy drying, therefore can keep permanently effective, the shelf-life is prolonged.
In addition, in order to prove that mouth mask of the present invention compares with the mouth mask that does not add nanocrystal cellulose and adhesive, make a marked difference, both have been made Electronic Speculum figure respectively, wherein, Fig. 3 shows the SEM Electronic Speculum figure of the nonwoven that does not add nanocrystal cellulose and silicone oil; Fig. 4 shows the SEM Electronic Speculum figure of the nonwoven that adds nanocrystal cellulose and silicone oil.Do not add the fiber smoother of the nonwoven of nanocrystal cellulose and silicone oil as can be seen from Figure 3, the cavity between the fiber is bigger; The coherent substance that has added as can be seen from Figure 4 on the fiber of nonwoven of nanocrystal cellulose and silicone oil increases, and the cavity between the fiber dwindles.Add the cavity that can dwindle behind nanocrystal cellulose and the silicone oil between the fiber as can be seen by the Electronic Speculum picture, strengthened the dustproof effect.
It should be noted that the present invention will be described rather than limit the invention for above-described embodiment, and those skilled in the art can design alternative embodiment under the situation of the scope that does not break away from claims.
Claims (10)
1. method of making anti-dust respirator comprises:
The surrounding layer making step, the surrounding layer of making anti-dust respirator;
Adhesive adds step, makes the filter course that comprises adhesive; And
Anti-dust respirator forms step, described filter course is arranged in the described surrounding layer, to make described anti-dust respirator.
2. method according to claim 1, wherein, it is that adhesive is added in the nonwoven that adhesive adds step, this step comprises:
Second soaking step (S1400) is put into adhesive with described nonwoven and was soaked 5-10 minute; And
Second centrifugation step (S1500), with described nonwoven after in adhesive, soaking with the centrifugal 5-10 of 5000-10000 rev/min speed minute.
3. method according to claim 1 wherein, comprised before described adhesive adds step further:
Nanocrystal cellulose adds step: nanocrystal cellulose is added in the nonwoven.
4. method according to claim 3, wherein said nanocrystal cellulose are added step and are comprised:
First soaking step (S1100): described nonwoven was soaked 5-10 minute in the nanocrystal cellulose colloid aqueous solution of by weight 1-5%;
First centrifugation step (S1200): with described nonwoven after in the nanocrystal cellulose colloid aqueous solution, soaking with the centrifugal 5-10 of 5000-10000 rev/min speed minute;
Baking step (S1300): with described immersion nanocrystal cellulose colloid aqueous solution and centrifugal after nonwoven 105-110 ℃ of oven dry.
5. method according to claim 1, wherein, described adhesive is at least a in following: silicone oil, glycerine, propane diols, molecular weight are polyethylene glycol and the vegetable oil of 200-400.
6. method according to claim 3, the length of wherein said nanocrystal cellulose is that 150-300nm, diameter are 30-100nm, preferably length is that 200nm, diameter are 50nm.
7. method according to claim 3, the degree of polymerization of wherein said nanocrystal cellulose is 160-180.
8. method according to claim 4 comprises the adhesive of 1.0-1.6% by weight and the nanocrystal cellulose of 0.1-1.0% in the wherein said filter course.
9. method according to claim 2, wherein, described nonwoven is that to press the aperture that forms with polypropylene fibre silk or polyethylene filament spray be the network structure of 1.5-2.5 μ m.
10. anti-dust respirator that obtains according to each preparation method of claim 1-9.
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Cited By (4)
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| CN103932427A (en) * | 2014-04-24 | 2014-07-23 | 河海大学常州校区 | Bionic wet-type haze-resisting full-protecting mask |
| CN104207375A (en) * | 2014-09-24 | 2014-12-17 | 常州美胜生物材料有限公司 | Mask for blocking PM2.5 (Particulate Matter 2.5) particles |
| CN104489969A (en) * | 2014-11-25 | 2015-04-08 | 苏州维度丝绸有限公司 | Silk mask |
| CN105768276A (en) * | 2016-05-25 | 2016-07-20 | 刘智懿 | Novel anti-haze mask |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107232663A (en) * | 2017-07-03 | 2017-10-10 | 南京凤源新材料科技有限公司 | A kind of filter and PM2.5 mouth masks of NCC enhancings filtering |
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| CN105768276A (en) * | 2016-05-25 | 2016-07-20 | 刘智懿 | Novel anti-haze mask |
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| CN103284355B (en) | 2014-08-13 |
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