CN207102118U - A kind of compound filter bed - Google Patents
A kind of compound filter bed Download PDFInfo
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- CN207102118U CN207102118U CN201720898037.XU CN201720898037U CN207102118U CN 207102118 U CN207102118 U CN 207102118U CN 201720898037 U CN201720898037 U CN 201720898037U CN 207102118 U CN207102118 U CN 207102118U
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- filter bed
- compound filter
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- nonwoven cloth
- sms nonwoven
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Abstract
The utility model provides a kind of compound filter bed, compound filter bed includes polypropylene SMS nonwoven cloth cover, water-absorption fiber layer and gum bottom composition, hot blast guide layer is provided between polypropylene SMS nonwoven cloth cover and water-absorption fiber layer, the pore size control of polypropylene SMS nonwoven cloth cover is below 16 μm；The composite layer that hot blast guide layer is made up of synthetic fibers and cellulose.The compound filter bed of the utility model embodiment has good application in terms of Grainy fat tissue purge process, and the compound filter bed surface flatness of formation is high, and fat wastes less, and oil suction water removal effect is high, is especially advantageous for wide popularization and application.
Description
Technical field
Grainy fat tissue purification art is the utility model is related to, in particular to a kind of answering for purified particles fat
Mould assembly filter bed.
Background technology
Autologous fat transplantation is developed so far existing more than 100 years history, especially the suction lipectomy technology eighties in last century
Utility model so that Autologous fat grafting obtains fast development.But Autologous fat grafting has certain lack in itself
Fall into, that is, the conservation rate of fatty volume is unpredictable after transplanting, and difference is larger (20%-90%).Wherein Grainy fat tissue
Purification process had a very large relationship with absorptivity.The method of Grainy fat tissue purification process mainly has settled process, centrifugation at present
Method, ablution and cotton pad method, the purpose of purifying are provided to obtain enrichment higher (containing less moisture), impurity component more
The more Grainy fat tissue tissue of few (red blood cell, grease, fragmenting fat cell) and fatty Derived Stem Cells, to be advantageous to
Improve the volume conservation rate of postoperative Grainy fat tissue.
Simple settled process principle is simple, workable.It is proved that the core of significant quantities of fat cell can be kept complete before
Property, but the also presence of unnecessary visible component, the especially haemocyte such as remaining large quantity of moisture, grease simultaneously, it is considered as having rush
Inflammation acts on and reduces the activity of adipocyte.
Centrifugal process is probably the technology of most widely used processing purifying fat at present, and has formd the place of standard
Manage flow.That is most praised highly surely belongs to the 1200g (3000 revs/min) of Coleman propositions, 3 minutes, can effectively remove upper strata
Cell fragment oil layer and bottom moisture.But also someone points out that this method is not most viable yet, because it is not
All fat stem cells being included in adipose tissue can be collected.
It is considered as to ensure to collect substantial amounts of fat stem cell before ablution, it is thin can also collects substantial amounts of fat
Born of the same parents, newest review of literature also support ablution to maintain postoperative fatty survival.2013, the application such as Conde-Green
Fat after animal experiment study application ablution processing, fatty survival rate is preferable after 12 weeks, and can be limited
Processing significant quantities of fat tissue, efficiency are higher in time.But this technology is generally mixed with other technologies, such as Salinas etc.
(padding processing or centrifugal treating with Telfa again after cleaning), but these experimental results are still without the support of experiment in vivo data.
Cotton pad filtration method handles adipose tissue, can remove unnecessary visible component, but contained by the adipose tissue after processing
Fat stem cell quantity, and in vivo after transplanting fatty volume conservation rate also lacks data support, and this method exists
It is relatively time consuming laborious when handling fatty.
In addition, the common defects of above-mentioned four kinds of methods are that fat waste is relatively more, inefficient, the operation of oil suction water removal
On it is also more time-consuming, cost of investment is higher, is unfavorable for market-oriented application.
In view of this, it is special to propose the utility model.
Utility model content
First purpose of the present utility model is to provide a kind of compound filter bed, and the compound filter bed is by using with spy
The polypropylene SMS nonwoven cloth cover in different aperture and other materials progress are organically compound, and the compound filter bed surface of formation is smooth
Degree is high, and aperture is tiny, and filtering efficacy is high, and fat waste is few, and oil suction water removal effect is high and easy to operate, time saving, and price is low
It is honest and clean, it is especially advantageous for wide popularization and application.
Second purpose of the present utility model is to provide above-mentioned compound filter bed one kind preferably preparation method, the preparation side
Method is relatively easy, easy to operate, and operating condition is also relatively gentleer, and front and rear step linking is close, and three wastes produce, safety and environmental protection,
Manufactured compound filter bed application effect is more excellent.
3rd purpose of the present utility model is the application for providing above-mentioned compound filter bed, can be applied to particle fat well
Fat purge process, filtering efficacy is high, and fat wastes less, and oil suction water removal effect is high.
In order to realize above-mentioned purpose of the present utility model, spy uses following technical scheme：
The utility model provides a kind of compound filter bed, includes the polypropylene SMS nonwoven cloth cover of hydrophilic modifying, water suction
Fibrous layer and gum bottom composition, are provided with hot blast guide layer between polypropylene SMS nonwoven cloth cover and water-absorption fiber layer；
The aperture of polypropylene SMS nonwoven cloth cover is below 16 μm；
The composite layer that hot blast guide layer is made up of synthetic fibers and cellulose.
In the prior art, centrifugal process can effectively remove the cell fragment oil layer on upper strata and the moisture of bottom.But
Someone points out that this method is not most viable yet, because all fat that it can not be collected included in adipose tissue are dry
Cell.Ablution can handle significant quantities of fat tissue within the limited time, and efficiency is higher.But this technology generally mixed with
Other technologies, such as Salinas etc. (padding processing or centrifugal treating with Telfa again after cleaning), but these experimental results do not have still
There is the support of experiment in vivo data.Cotton pad filtration method handles adipose tissue, can remove unnecessary visible component, but after processing
Fatty volume conservation rate also lacks data support after the quantity of fat stem cell contained by adipose tissue, and internal transplanting.
The utility model is in order to solve the above technical problems, provide a kind of good to lipochondrion purification effect, fat wave
Take few compound filter bed, surface layer of the filter bed itself makes it compound with other materials by modification, the particular/special requirement in aperture
The filter bed being prepared can have more significant advantage compared to traditional filter type, and not only filter efficiency is high, and fat
Waste less, purification effect has lifting by a relatively large margin, and after operating efficiency lifting, saves the operating time, time saving and energy saving.
In the utility model, surface layer is using the polypropylene SMS nonwoven cloth cover crossed by hydrophilic modifying, Ke Yiti
The effect of high filtration, there is good biocompatibility and drain ability, while can also reduce reverse osmosis amount, purification effect accordingly
Significantly better than other materials such as cottons of the prior art.
Further, in order to improve the filter effect of surface layer, the parameter index such as aperture, surface density for surface layer has also carried out phase
The optimization answered, the aperture of polypropylene SMS nonwoven cloth cover generally require control below 16 μm, more preferably polypropylene SMS nonwoven
The aperture of cloth cover is preferably controlled in less than 15.5 μm, most preferably 15 μm.
In addition, surface density is preferably controlled in 11g/m2Hereinafter, preferably described surface density control is in 10.5-10.6g/m2Between,
More preferably 10.58g/m2.Below 95 μm, preferably described thickness control exists the thickness control of polypropylene SMS nonwoven cloth cover
Between 91-92 μm, more preferably 91.5 μm.The air penetrability of polypropylene SMS nonwoven cloth cover is controlled in below 14m/s, is preferably controlled
System between 13-13.5m/s, more preferably 13.24m/s, it is seen that for the surface layer each index parameter contrast it is suitable
Suitable is preferred, is proved by follow-up filter effect, and each index parameter control is more beneficial for purifying effect in suitable scope
The lifting of fruit.
In the utility model, in addition to using special surface layer, also the surface layer and other layers are carried out organically multiple
Closing, wherein hot blast guide layer can also increase the infiltration in vertical direction to improve liquid while longitudinal diffusion, and together
When reduce reverse osmosis amount, therefore the composite layer formed for synthetic fibers and cellulose of hot blast guide layer selection, can promote
By the filtered grease of surface layer and moisture rapid dispersion.
Water-absorption fiber layer is the main construction for playing assimilation effect, and the power of its absorbing and filtering effect directly determines this practicality
The whole structure of new filter bed, thus the utility model selected in material selection for SAF superabsorbent fibers.
Last gum bottom primarily serves fixed anti-seepage effect, and the utility model its material when preparing filter bed selects most
It is polypropylene fiber material well.
The utility model additionally provides the preparation method of the compound filter bed, had except providing a kind of compound filter bed
Body comprises the following steps：
Spunbond-melt blown is carried out using PP GRANULES, and polypropylene is obtained using anion surfactant hydrophilic modifying
SMS nonwoven cloth covers；
Polypropylene SMS nonwoven cloth cover, hot blast guide layer, water-absorption fiber layer, gum bottom are from top to bottom sequentially overlapped
Extrusion cladding, produce.
The preparation method of the utility model embodiment is relatively easy, easy to operate, and operating condition is also relatively gentleer, front and rear step
Rapid linking is close, and three wastes produce, safety and environmental protection, belongs to preferably a kind of preparation method, but does not represent without others
Preparation method, as long as the method with filter bed structure of the present utility model can be prepared in the scope of protection of the utility model
Within.
During surface layer is prepared, spunbond-melt blown processing is carried out using PP GRANULES, SMS is spunbond and melt-blown work
A kind of process technology that skill is combined, it is that 2 layers of spunbond (Spunbond) cloth and 1 layer of melt-blown (Meltblown) cloth are compound.Spun-bond process
The characteristics of non-woven cloth is that intensity is high, vertically and horizontally performance approaches, and shortcoming is that its networking uniformity and surface coverage are poor；And melt
Spray non-woven cloth is ultra-fine fiber construction, and fibre diameter is small, and cloth cover specific surface area is big, and porosity is low, and filtration resistance is small, filtering
Efficiency high, surface coverage and advantages of good shielding performance, shortcoming are that low intensity, wearability are poor.Therefore both is combined and formed
Composite the shortcomings that just compensate for each other, there is the characteristics of intensity is high, wearability is good, while there is excellent shielding again
Energy.The spun fibre diameter of meltblown institute belongs to superfine fibre typically between more microns of 0.01-10.It is fine in forming process
It is low to tie up the degree of orientation, therefore the strength of fiber is also low.Need to consume substantial amounts of high temperature and high pressure gas, the temperature of gas in spinning process
Up to 200-350 DEG C, speed is up to 1/3~1 times of the velocity of sound, therefore the power consumption of meltblown is larger.In addition, technological process it is short,
The outstanding feature that production efficiency is high, yield is also meltblown greatly.SMS products are used for medical-related products, such as mask, operation
Clothing, sterilization wrap, gloves, surgery annex, protective footwear and protective cover, ward sheet, pillow etc..Due to production technology and application
The difference in field, the raw material of SMS products is mainly polypropylene (PP), and other also have polyester, poly- phthalein amine, polyethylene etc..And PP is
A kind of most material of SMS techniques application at present, generally is rheology control type, has high uniformity and high quality.PP master
Want index：Melt index spunbond is 25~38, melt-blown is 800~l200, molecular weight distribution 1.8 × 105~3.0 × 105, ash content
200mg/kg, isotacticity>95.Because PP has, strength is high, fusing point is low, processing characteristics is good, chemical resistance is good, density is small, price
The advantages that cheap, make it in fields such as medical supplies, sanltary towel, baby' diaper, agricultural foison cloth and furniture packaging materials
It is widely applied.Chemical property：Erosions and contamination of the PP to chemical agent it is resistance to imperial functional；Hot property：PP has
Good heat resistance, fusing point are 164~170 DEG C, resistance to more than 100 DEG C of temperature scalding；Minimum temperature in use be -15~-
20℃。
It is that there is two spunbond dies and a meltblown beam during practical operation, is first sprayed by first spunbond die
Go out long filament and form first layer fibre web, then second layer fibre web is being formed above by meltblown beam, finally sprayed by second spunbond
Silk capitiform is into third layer fibre web.This three layers of fibre webs bind by hot-rolling mill, finally wind to form that SMS is non-to be knitted by up- coiler trimming
Make cloth.According to technological principle：Aperture of filter material will be reduced by wanting raising sieving deposition effect, that is, be reduced fibre fineness, improved material
The compactness of material.Therefore when making, the fibre diameter of meltblown layer has been made averagely in 1um or so, spunbond layer in adjusting process parameter
Fibre diameter in 20um or so, the fibrous face layer below final obtained 16 μm of average pore size, because its surface density is 11g/m2With
Under, the surface layer is named as SMS10 materials by utility model people, shows that aperture size is between ten to tens microns by research
Filtering material, diameter 1um dust can be trapped.So SMS10 materials can (ASCs be put down with the most ASCs of filter deposition
Equal diameter is 9.4 ± 1.89um (7.45~29.18um)).
When selecting hydrophilic modifier, what is specially selected is anion surfactant, is more preferably selected as Sulfonates table
Face activating agent, docusate sodium is also optimally for two (2- ethylhexyls) Disodium sulfosuccinates, the hydrophilic modifier alias, point
Minor：C20H3·7NaSO7, molecular weight：444.56, it is a kind of anion surfactant-sulfonate.Principle is：It is hydrophilic whole
During reason, hydrophobic group-OR is combined with hydrophobic polypropylene surface, and hydrophilic radical is outside, and continuous moisture film is formed in fiber surface,
The contact angle of fiber and water is reduced, so as to accelerate diffusion of the water in fiber surface.After hydrophilic finiss, and by with other work(
The mutual cooperation of ergosphere, the various aspects of performance of last filter bed obtain overall lifting, and contact angle is reduced into by original 130.23 °
46.20 °, its permeability time is also shorten to 4.15 seconds by original not measuring, and these test effect follow-up datas have good
Support.
It is to have strict sequentially to be extruded up and down between each layer in addition to the making of surface layer carries out creative grope
Prepared by superposition, because may be influential, extrusion temperature control in addition on last filter effect after having overturned order
System is more preferably controlled between 250-300 DEG C between 245-320 DEG C, and the temperature control of sizing is at 65-80 DEG C, preferable temperature
At 70-75 DEG C, extruding is composite effect, therefore temperature relatively can be higher in order to better improve, subsequently crowded in order to allow for control
The material of extrusion is shaped well, it is therefore desirable to temperature cooling is reduced, by setting temperature control in suitable scope.
Compound filter bed of the present utility model has good application in terms of Grainy fat tissue purifying, and surface is smooth, aperture
It is tiny, it is very beneficial for the acquisition of adipose tissue, is substantially reduced the waste of adipose tissue.
Compared with prior art, the beneficial effects of the utility model are：
(1) the compound filter bed of the utility model embodiment, by using the polypropylene SMS nonwoven cloth with special aperture
Surface layer and other materials progress are organically compound, and the compound filter bed surface flatness of formation is high, and aperture is tiny, filtering efficacy
Height, fat waste few；
(2) preparation method of the compound filter bed of the utility model embodiment is relatively easy, easy to operate, operating condition
Compare gently, front and rear step linking is close, and three wastes produce, safety and environmental protection；
(3) the compound filter bed of the utility model embodiment can be applied to Grainy fat tissue purge process, filtering effect well
Power is high, and oil suction water removal effect is high, is advantageous to the acquisition of adipose tissue, reduces the waste of adipose tissue.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the concrete structure diagram of the compound filter bed in the utility model embodiment 1.
Reference：
1- surface layers；2- hot blast guide layers；3- water-absorption fiber layers；
4- gum bottoms.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with embodiment, but those skilled in the art
It will be understood that the following example is merely to illustrate the utility model, and it is not construed as limiting the scope of the utility model.Embodiment
In unreceipted actual conditions person, the condition suggested according to normal condition or manufacturer carries out.Agents useful for same or the unreceipted life of instrument
Manufacturer person is produced, is the conventional products that can be obtained by commercially available purchase.
Embodiment 1
1) PP GRANULES is first subjected to spunbond-melt blown operation, is configured to solution with sulfonate surfactant, then
50-60 DEG C of immersion PP GRANULES is dried to obtain polypropylene SMS nonwoven cloth cover, its aperture exists with hydrophilic modifying 20-30min
Less than 16 μm；
2) it is and then polypropylene SMS nonwoven cloth cover 1, hot blast guide layer 2 (synthetic fibers and cellulose are formed), water suction is fine
Dimension layer 3 (SAF superabsorbent fibers), gum bottom 4 (polypropylene fiber material) are arranged in order rear extrusion cladding from top to bottom, shape
Compound filter bed is obtained, concrete structure is shown in accompanying drawing 1.
Embodiment 2
1) PP GRANULES is first subjected to spunbond-melt blown operation, prepared with two (2- ethylhexyls) Disodium sulfosuccinates
Into solution, then 50-60 DEG C is soaked PP GRANULES with hydrophilic modifying 20-30min, is dried to obtain polypropylene SMS nonwoven cloth cover
Layer, its aperture is below 15.5 μm；
2) and then by polypropylene SMS nonwoven cloth cover, hot blast guide layer (synthetic fibers and cellulose form), water-absorption fiber
Layer (SAF superabsorbent fibers), gum bottom (polypropylene fiber material) extrude between being arranged in order latter 245-320 DEG C from top to bottom
Compound, 65 DEG C of sizings obtain compound filter bed.
Embodiment 3
1) PP GRANULES is first subjected to spunbond-melt blown operation, prepared with two (2- ethylhexyls) Disodium sulfosuccinates
Into solution, then 50-60 DEG C is soaked PP GRANULES with hydrophilic modifying 20-30min, is dried to obtain polypropylene SMS nonwoven cloth cover
Layer, its aperture are 15 μm, surface density 11g/m2Hereinafter, below 95 μm of thickness, below air penetrability 14m/s；
2) and then by polypropylene SMS nonwoven cloth cover, hot blast guide layer (synthetic fibers and cellulose form), water-absorption fiber
250 DEG C of extrusion claddings after layer (SAF superabsorbent fibers), gum bottom (polypropylene fiber material) are arranged in order from top to bottom, 80
DEG C sizing obtains compound filter bed.
Embodiment 4
1) PP GRANULES is first subjected to spunbond-melt blown operation, prepared with two (2- ethylhexyls) Disodium sulfosuccinates
Into solution, then 50-60 DEG C is soaked PP GRANULES with hydrophilic modifying 20-30min, is dried to obtain polypropylene SMS nonwoven cloth cover
Layer, its aperture are 15 μm, surface density 10.5-10.6g/m2, 91-92 μm of thickness, air penetrability 13-13.5m/s；
2) and then by polypropylene SMS nonwoven cloth cover, hot blast guide layer (synthetic fibers and cellulose form), water-absorption fiber
300 DEG C of extrusion claddings after layer (SAF superabsorbent fibers), gum bottom (polypropylene fiber material) are arranged in order from top to bottom, 70
DEG C sizing obtains compound filter bed.
Embodiment 5
1) PP GRANULES is first subjected to spunbond-melt blown operation, prepared with two (2- ethylhexyls) Disodium sulfosuccinates
Into solution, then 50-60 DEG C is soaked PP GRANULES with hydrophilic modifying 20-30min, is dried to obtain polypropylene SMS nonwoven cloth cover
Layer, its aperture are 15 μm, surface density 10.58g/m2, 91.5 μm of thickness, air penetrability 13.24m/s；
2) and then by polypropylene SMS nonwoven cloth cover, hot blast guide layer (synthetic fibers and cellulose form), water-absorption fiber
300 DEG C of extrusion claddings after layer (SAF superabsorbent fibers), gum bottom (polypropylene fiber material) are arranged in order from top to bottom, 75
DEG C sizing obtains compound filter bed.
Comparative example 1
Surface layer is used to the material of cotton gauze, other operating procedures are consistent with embodiment 5, and specific aperture is 1400 μm,
Yarn count density 21*21/28*28.
Design parameter in above-described embodiment and comparative example, the assay method of surface density：GB/T24218.1-2009 is spun
Fabric non-woven cloth test method part 1：The measure of mass area ratio, the assay method of thickness：GB/T 24218.2-
2009 textile non-woven cloth test method part 2s：The measure of thickness, the assay method of air penetrability：GB/T 5453-1997
The measure of textile fabric gas permeability, the measure in aperture：According to the measure in GBT 24219-2009 Woven filter cloth bubble points aperture
Standard, measured under the conditions of 25 DEG C, relative humidity 65%.
Experimental example 1
The frictional behaviour of the utility model embodiment 2, the compound filter bed of comparative example 1 is contrasted, specific result
It see the table below 1：
The frictional behaviour result of table 1
| Group | MIU | MMD | SMD(μm) |
| Embodiment 2 | 2.035 | 1.430 | 2.290 |
| Comparative example 1 | 2.410 | 7.710 | 16.845 |
Note：Mantle friction index analysis (MIU- average friction coefficients；The mean difference irregularity of MMD- coefficient of friction；SMD(μ
M)-surface roughness)
Fabric face frictional behaviour is often reflected with coefficient of friction or frictional resistance.On the friction of fabric, because different
Contact object and it is different.During fabric to fabric friction, surface is more smooth, and its frictional resistance gets over the frictional resistance branch by fiber
Match somebody with somebody.The bumps of coarse fabric face can cause frictional resistance, as can be seen from the above table, compound filter bed of the present utility model
SMD be 2.29um, its smooth feeling is substantially due to the filter bed of documents 1.
Experimental example 2
According to FZ_T 60017-1993- time of penetration testing standards, during by embodiment 1-5 of the present utility model infiltration
Between contrasted with the times of penetration of documents 1, concrete outcome is as shown in table 2 below：
The liquid time of break-through of table 2
| Group | Permeability time (s) |
| Embodiment 1 | 4.17 |
| Embodiment 2 | 4.15 |
| Embodiment 3 | 4.14 |
| Embodiment 4 | 4.11 |
| Embodiment 5 | 4.11 |
| Comparative example 1 | Do not measure |
As can be seen from the above table, the permeability time of comparative example 1 does not measure substantially, but passes through scheme of the present utility model
Compound filter bed its permeability time prepared is changed into 4 seconds or so, and time of penetration greatly shortens.
The process that Grainy fat tissue purifying is carried out using compound filter bed of the present utility model is carried out according to following operation：Will be negative
The Grainy fat tissue of pressure suction is inserted in bowl, moisture and grease can the filtration and infiltration through surface layer in deep layer, about 3-5 (times minute
It is different according to Grainy fat tissue amount and the specification size of bowl), the highly enriched Grainy fat tissue after remaining purification process can be by it
In ribbon screened.Fat after purification is transferred in 1ml syringes and injected.
Although illustrate and describing the utility model with specific embodiment, but will be appreciated that without departing substantially from this reality
Many other change and modification can be made with the case of new spirit and scope.It is, therefore, intended that in appended power
Profit requires to include belonging to all such changes and modifications in the scope of the utility model.
Claims (10)
1. a kind of compound filter bed, it is characterised in that the polypropylene SMS nonwoven cloth cover including hydrophilic modifying, water-absorption fiber layer
And gum bottom composition, it is provided with hot blast guide layer between the polypropylene SMS nonwoven cloth cover and the water-absorption fiber layer；
The pore size control of the polypropylene SMS nonwoven cloth cover is below 16 μm；
The composite layer that the hot blast guide layer is made up of synthetic fibers and cellulose.
2. compound filter bed according to claim 1, it is characterised in that the aperture of the polypropylene SMS nonwoven cloth cover
Control is below 15.5 μm.
3. compound filter bed according to claim 2, it is characterised in that the aperture of the polypropylene SMS nonwoven cloth cover
For 15 μm.
4. compound filter bed according to claim 1, it is characterised in that the face of the polypropylene SMS nonwoven cloth cover is close
Degree control is in 11g/m2Below.
5. compound filter bed according to claim 4, it is characterised in that the surface density control is in 10.5-10.6g/m2It
Between.
6. compound filter bed according to claim 5, it is characterised in that the surface density is 10.58g/m2。
7. compound filter bed according to claim 1, it is characterised in that the thickness of the polypropylene SMS nonwoven cloth cover
Control is below 95 μm.
8. compound filter bed according to claim 7, it is characterised in that the thickness control is between 91-92 μm.
9. compound filter bed according to claim 1, it is characterised in that the polypropylene SMS nonwoven cloth cover is breathed freely
Rate is controlled in below 14m/s.
10. the compound filter bed described in claim any one of 1-9, it is characterised in that the water-absorption fiber layer is SAF high water absorptions
Property resin；The gum bottom is polypropylene fiber material.
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| CN201720898037.XU CN207102118U (en) | 2017-07-21 | 2017-07-21 | A kind of compound filter bed |
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| CN201720898037.XU CN207102118U (en) | 2017-07-21 | 2017-07-21 | A kind of compound filter bed |
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| CN207102118U true CN207102118U (en) | 2018-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243185A (en) * | 2017-07-21 | 2017-10-13 | 中国医学科学院整形外科医院 | A kind of compound filter bed and preparation method thereof, application |
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2017
- 2017-07-21 CN CN201720898037.XU patent/CN207102118U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243185A (en) * | 2017-07-21 | 2017-10-13 | 中国医学科学院整形外科医院 | A kind of compound filter bed and preparation method thereof, application |
| CN107243185B (en) * | 2017-07-21 | 2024-04-19 | 中国医学科学院整形外科医院 | Composite filter pad and preparation method and application thereof |
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