CN107754449A - A kind of complex nonwoven filtering material and preparation method thereof - Google Patents
A kind of complex nonwoven filtering material and preparation method thereof Download PDFInfo
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- CN107754449A CN107754449A CN201710988093.7A CN201710988093A CN107754449A CN 107754449 A CN107754449 A CN 107754449A CN 201710988093 A CN201710988093 A CN 201710988093A CN 107754449 A CN107754449 A CN 107754449A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0618—Non-woven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0622—Melt-blown
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0627—Spun-bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/064—The fibres being mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0663—The layers being joined by hydro-entangling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Abstract
The invention discloses a kind of complex nonwoven filtering material, including spin crucible zone, short fiber layers, chopped fiber interposed layer, woven enhancement layer etc., its preparation method：One or several kinds of chopped fibers are mixed, combed, lapping, obtain the first chopped fiber stratum reticulare, woven enhancement layer debatching is laid to above the first chopped fiber stratum reticulare, one or several kinds of chopped fibers are mixed again, combed, then lay to above woven enhancement layer, the second chopped fiber stratum reticulare is formed, above-mentioned fluffy fiber material is finally passed sequentially through into the main pinprick reinforcement of pre-needling and multiple tracks into needled punched nonwoven material.Further above-mentioned needled punched nonwoven material is sent into gassing frame and singed, and simultaneously preheats spun-bonded/melt-blown/spunbond Compound spinning crucible zone debatching, both are then sent into pressure rolling in milling train together, after winding, produces a kind of complex nonwoven filtering material.The complex nonwoven filtering material of the present invention has the advantages that filtering accuracy is high, wearability is good, mechanical property is good, service life is long.
Description
Technical field
The present invention relates to a kind of complex nonwoven filtering material and preparation method thereof, belongs to industrial filter material technology neck
Domain.
Background technology
The fields such as chemical industry, steel, metallurgy, cement, electric power and waste incineration produce substantial amounts of exhaust gas dust, typically
Dust in flue gas is removed using bag type dust removing technology, to reduce the pollution to surrounding air.As environmental protection policy is to flue gas powder
The continuous improvement of dirt discharge capacity, the filtering accuracy of core component-filter bag in sack cleaner is proposed higher and higher
It is required that.At present, the filter bag in sack cleaner is substantially using needled punched nonwoven material.Because of the fibre fineness by used in
Limitation, and metal pricker left needle tracks in the material during pinprick reinforcement（That is pinprick）Influence, acupuncture is non-
The average pore size of weaving material at 40 μm or so, can not meet the requirement of existing standard limit of smog release substantially.
It is more using in the further aluminum coated steel of its filter material surface at present in order to improve the filtering accuracy of needled punched nonwoven material
Method, PTFE microporous barriers are covered in filter material surface.The aperture of conventional PTFE microporous barriers is about between 1-2 μm, therefore,
After needled punched nonwoven material overlay film, its filtering accuracy significantly improves.
But because PTFE microporous barriers are very thin in itself（10 μm of ＜）, poor mechanical property.If coating technique is unreasonable, pole
It is damaged easily in coating process, so as to influence its filtering accuracy and service life.Such as Application No. CN201610963869.5
（A kind of semi-dry desulphurization gas cleaning filtrate and preparation method thereof）Patent of invention, be exactly the composite square by HTHP
Method, PTFE microporous barriers and needling non-woven filtering material are combined with each other, for semi-dry desulphurization gas cleaning filtrate.It is and high
The mulching plastic film condition of warm high pressure, it is easy to destroy membrane pore structure.
Therefore, using other composite technologies, by the filtering accuracy other non-woven materials higher than needled punched nonwoven material
Material is combined to filter material surface, is the effective ways for solving existing issue.
Application No. 201410162520.2（A kind of preparation method of polyphenylene sulfide composite filtering material）Patent of invention, will be molten
Spraying polyphenylene sulfide fibre net and the polyphony thioether short fiber Netcom formed, to cross the progress of array embedding inlay technique compound, has obtained more exceeding
Filter the composite filtering material of precision.But the surface layer for the composite that this method obtains is melt-blown polyphenylene sulfide fibre, due to meltblown fibers
Fineness is small, mechanical property is relatively poor, and gained composite filtering material wears no resistance, and service life is not grown.
The content of the invention
It is to be solved by this invention be existing needling non-woven filtering material filtering accuracy it is low, with PTFE microporous barriers and melt-blown
The problems such as service life is short after non-woven material is compound.
In order to solve the above problems, the invention provides a kind of complex nonwoven filtering material, it is characterised in that including according to
Secondary compound spun-bonded/melt-blown/spunbond Compound spinning crucible zone, the first short fiber layers, first/second chopped fiber interposed layer, woven enhancing
Layer, the second/the first chopped fiber interposed layer and the second short fiber layers.
Preferably, the fiber in the spun-bonded/melt-blown/spunbond Compound spinning crucible zone is appointing in polypropylene, polyester, polyamide
Meaning is a kind of, or the sheath-core bicomponent fibre being made up of two of which.
Preferably, the mass area ratio of the spun-bonded/melt-blown/spunbond Compound spinning crucible zone is 25-55g/m2, wherein being meltblown
The mass area ratio of layer is 5-10g/m2。
Formed it is highly preferred that the spun-bonded/melt-blown/spunbond Compound spinning crucible zone is reinforced through smooth roll hot rolling.
Preferably, the chopped fiber is appointing in the chopped fibers such as polypropylene fibre, acrylic, terylene, polyamide fibre, aramid fiber, polyphenylene sulfide
Meaning is one or more of.
Preferably, the woven enhancement layer is polypropylene fibre, terylene, acrylic, polyamide fibre, glass, polyphenylene sulfide, aramid fiber, PTFE
Any one in woven fabric.
It is highly preferred that the weft density of the woven enhancement layer is 20-60 roots/10cm, mass area ratio 50-200g/
m2。
Present invention also offers a kind of above-mentioned preparation method of complex nonwoven filtering material, it is characterised in that specific step
It is rapid as follows：
The first step：Any one or a few in the chopped fibers such as polypropylene fibre, acrylic, terylene, polyamide fibre, aramid fiber, polyphenylene sulfide is mixed
Close, comb, lapping, obtain the first chopped fiber stratum reticulare；
Second step：Woven enhancement layer debatching is laid to above above-mentioned first chopped fiber stratum reticulare；
3rd step：Any one or a few in the chopped fibers such as polypropylene fibre, acrylic, terylene, polyamide fibre, aramid fiber, polyphenylene sulfide is mixed
Close, comb, then laid by lapping machine to above above-mentioned woven enhancement layer, form the second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by pre-needling and the main acupuncture of multiple tracks, in the first short fiber layers and the second short fiber layers near woven enhancement layer upper and lower surface
Fiber it is mutually interspersed, formed and worn by the first short fiber layers, first/second chopped fiber
The needled punched nonwoven material that intercalation, woven enhancement layer, the second/the first chopped fiber interposed layer and the second short fiber layers form；
5th step：Needled punched nonwoven material made from 4th step is sent into gassing frame and singed, burner size is adjusted, makes flame temperature
Degree control is at 850-950 DEG C；
6th step：By spun-bonded/melt-blown/spunbond Compound spinning crucible zone debatching preheating, preheating temperature is less than Compound spinning crucible zone fiber melt
10-50℃；
7th step：By the preheating spun-bonded/melt-blown in the needled punched nonwoven material after singing and the 5th step/spunbond Compound spinning crucible zone one
Rise and be sent into pressure rolling in the smooth roll milling train that pressure is 2-4MPa, winding, produce a kind of complex nonwoven filtering material.
The present invention utilizes the hot melt thermoplastic energy of polymer, by online singeing by needled punched nonwoven material surface
Thermoplastic fibre melt, by it is preheated, have it is smaller than needled punched nonwoven material aperture compound by spun-bonded/melt-blown/spunbond
The SMS for spinning crucible zone composition spins molten non-woven material method hot rolling together.In the forming technology, spun-bonded/melt-blown/spunbond is compound
The micro-aperture structure for spinning the melt-blown sandwich layer in crucible zone is not affected by destruction, therefore the filtering essence of gained complex nonwoven filtering material
Degree is high.In addition, singeing melts the extreme fiber of needled punched nonwoven material, it is multiple with spun-bonded/melt-blown/spunbond after pressure rolling
Close the adhesion fastness height for spinning crucible zone, the service life length of gained complex nonwoven filtering material.Further, present invention gained is multiple
The superficial layer for closing non-woven filter material is spunbond layer, and its mechanical property is good, wearability is good.Therefore, it is of the invention compound non-to knit
Making filtering material has the advantages that filtering accuracy is high, wearability is good, mechanical property is good, service life is long.In addition, present invention institute is public
The preparation method opened slight modification in existing needling non-woven filtering material production equipment can be achieved, and production cost is low.
Brief description of the drawings
A kind of structural representations of complex nonwoven filtering material of Fig. 1.
A kind of preparation technology route maps of complex nonwoven filtering material of Fig. 2.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment 1
The first step：The polypropylene short fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, lapping, obtains unit area
Quality is 160g/m2The first chopped fiber stratum reticulare；
Second step：It is all 36/10cm, mass area ratio 100g/m by weft density2Polyester filament machine
Enhancement layer debatching is knitted to lay to above above-mentioned first chopped fiber stratum reticulare；
3rd step：The polypropylene short fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, is then spread by lapping machine
It is put into above above-mentioned woven enhancement layer, it is 180g/m to form mass area ratio2The second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by 1 pre-needling and 5 main acupunctures, control each road acupuncture speed be respectively 600 turns/min, 650 turns/min, 680 turns/
Min, 700 turns/min, 730 turns/min and 780 turn/min, depth of needling is respectively 14mm, 11mm, 9mm, 8mm, 7mm and 6mm,
Formed by the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer, the second/the first chopped fiber interposed layer and the
Two short fiber layers composition, mass area ratio 440g/m2Needled punched nonwoven material；
5th step：Will above-mentioned needled punched nonwoven material be sent into gassing frame in singe, adjust burner size, make flame temperature control be
850℃；
6th step：It is 25g/m by mass area ratio2, meltblown layer mass area ratio be 5g/m2Smooth roll hot rolling spunbond/molten
After spray/spunbond composite polypropylene spins crucible zone debatching, preheated through penetration hot-air oven, preheating temperature is 150 DEG C.
7th step：Needled punched nonwoven material after singing and preheating spun-bonded/melt-blown/spunbond Compound spinning in the 6th step are melted
Layer is sent into pressure rolling in the milling train that pressure is 2MPa together, winding, produces a kind of complex nonwoven filtering material.After tested, this is multiple
The average pore size for closing non-woven filter material is 18 μm, warp direction stretching strength is 1200N/5cm, and broadwise tensile strength is 1300N/
5cm。
Embodiment 2
The first step：The polyester staple fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, lapping, obtains unit area
Quality is 200 g/m2The first chopped fiber stratum reticulare；
Second step：Will through it is close be 20/10cm, 25/10cm of filling density, mass area ratio 60g/m2Polyester filament it is woven
Enhancement layer debatching is laid to above above-mentioned first chopped fiber stratum reticulare；
3rd step：The polyester staple fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, is then spread by lapping machine
It is put into above above-mentioned woven enhancement layer, it is 200g/m to form mass area ratio2The second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by 1 pre-needling and 5 main acupunctures, control each road acupuncture speed be respectively 610 turns/min,
660 turns/min, 680 turns/min, 710 turns/min, 730 turns/min and 790 turn/min, depth of needling be respectively 14mm,
11mm, 10mm, 8mm, 8mm and 7mm, formed by the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer,
Two/the first chopped fiber interposed layers and the second short fiber layers composition, mass area ratio 460g/m2Needling non-woven material
Material；
5th step：Will above-mentioned needled punched nonwoven material be sent into gassing frame in singe, control burner size, make flame temperature control be
950℃；
6th step：It is 55g/m by mass area ratio2, meltblown layer mass area ratio be 10g/m2Smooth roll hot rolling spunbond/molten
After spray/spunbond complex polyester spins crucible zone debatching, preheated through penetration hot-air oven, preheating temperature is 180 DEG C.
7th step：Needled punched nonwoven material after singing and preheating spun-bonded/melt-blown/spunbond Compound spinning in the 6th step are melted
Layer is sent into pressure rolling in the milling train that pressure is 4MPa together, winding, produces a kind of complex nonwoven filtering material.After tested, this is multiple
The average pore size for closing non-woven filter material is 9 μm, warp direction stretching strength is 1100N/5cm, and broadwise tensile strength is 1200N/
5cm。
Embodiment 3
The first step：Be 1.56dtex by fineness is 1.33dtex, length is 42cm polyphony thioether short fiber and fineness, length be
38cm polyester staple fiber is 50 according to percentage by weight:50 ratio is weighed, and is then mixed, is combed, lapping, obtains unit plane
Product quality is 200 g/m2The first chopped fiber stratum reticulare；
Second step：Will through it is close be 50/10cm, filling density is 60/10cm, mass area ratio is 180 g/m2Glass it is woven
Enhancement layer debatching is laid to above above-mentioned first chopped fiber stratum reticulare；
3rd step：Be 1.56dtex by fineness is 1.33dtex, length is 42cm polyphony thioether short fiber and fineness, length be
38cm polyester staple fiber is 50 according to percentage by weight:50 ratio weigh mixing, comb, then by lapping machine lay arrive
Above above-mentioned woven enhancement layer, it is 100g/m to form mass area ratio2The second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by 1 pre-needling and 5 main acupunctures, control each road acupuncture speed be respectively 580 turns/min, 600 turns/min, 620 turns/
Min, 650 turns/min, 680 turns/min and 700 turn/min, depth of needling be respectively 15mm, 13mm, 11mm, 10mm, 9mm and
9mm, formed by the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer, the second/the first chopped fiber interposed layer
With the second short fiber layers composition, mass area ratio 480g/m2Needled punched nonwoven material；
5th step：Will above-mentioned needled punched nonwoven material be sent into gassing frame in singe, control burner size, make flame temperature control be
950℃；
6th step：It is 40g/m by mass area ratio2, meltblown layer mass area ratio be 8g/m2Smooth roll hot rolling spunbond/molten
Spray/spunbond composite polyamide（Nylon66 fiber）After spinning crucible zone debatching, preheated through far-infrared baking oven, preheating temperature is 210 DEG C.
7th step：By the preheating spun-bonded/melt-blown in the needled punched nonwoven material after singing and the 6th step/compound polyamides of spunbond
Amine spins crucible zone and is sent into pressure rolling in the milling train that pressure is 3.5MPa together, winding, produces a kind of complex nonwoven filtering material.Through surveying
Examination, the average pore size of the complex nonwoven filtering material is 12 μm, warp direction stretching strength is 2800N/5cm, broadwise tensile strength
For 3200N/5cm.
Embodiment 4
The first step：The acrylic chopped fiber that fineness is 5.0dtex, length is 43cm is mixed, combed, lapping, obtains unit plane
Product quality is 170 g/m2The first chopped fiber stratum reticulare；
Second step：It is all that 40/10cm, mass area ratio are 110 g/m by weft density2PTFE woven enhancement layer debatchings paving
It is put into above above-mentioned first chopped fiber stratum reticulare；
3rd step：The polyester staple fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, is then spread by lapping machine
It is put into above above-mentioned woven enhancement layer, it is 170g/m to form mass area ratio2The second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by 1 pre-needling and 5 main acupunctures, control each road acupuncture speed be respectively 620 turns/min, 650 turns/min, 680 turns/
Min, 720 turns/min, 750 turns/min and 780 turn/min, depth of needling is respectively 13mm, 11mm, 9mm, 8mm, 7mm and 6mm,
Formed by the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer, the second/the first chopped fiber interposed layer and the
Two short fiber layers composition, mass area ratio 450g/m2Needled punched nonwoven material；
5th step：Will above-mentioned needled punched nonwoven material be sent into gassing frame in singe, control burner size, make flame temperature control be
850℃；
6th step：It is 40g/m by mass area ratio2, meltblown layer mass area ratio be 6g/m2Smooth roll hot rolling spunbond/molten
After spray/spunbond complex polyester spins crucible zone debatching, preheated through far-infrared baking oven, preheating temperature is 190 DEG C.
7th step：Needled punched nonwoven material after singing and preheating spun-bonded/melt-blown/spunbond in the 6th step is compound
Spin crucible zone and be sent into pressure rolling in the milling train that pressure is 3MPa together, winding, produce a kind of complex nonwoven filtering material.Through surveying
Examination, the average pore size of the complex nonwoven filtering material is 14 μm, warp direction stretching strength is 1000N/5cm, broadwise tensile strength
For 1250N/5cm.
Embodiment 5
The first step：The polypropylene short fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, lapping, obtains unit area
Quality is 160g/m2The first chopped fiber stratum reticulare；
Second step：It is all 36/10cm, mass area ratio 100g/m by weft density2The woven enhancement layer of polyester filament move back
Volume is laid to above above-mentioned first chopped fiber stratum reticulare；
3rd step：The polypropylene short fiber that fineness is 1.56dtex, length is 38cm is mixed, combed, is then spread by lapping machine
It is put into above above-mentioned woven enhancement layer, it is 180g/m to form mass area ratio2The second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by 1 pre-needling and 5 main acupunctures, control each road acupuncture speed be respectively 600 turns/min, 650 turns/min, 680 turns/
Min, 700 turns/min, 730 turns/min and 780 turn/min, depth of needling is respectively 14mm, 11mm, 9mm, 8mm, 7mm and 6mm,
Formed by the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer, the second/the first chopped fiber interposed layer and the
Two short fiber layers composition, mass area ratio 440g/m2Needled punched nonwoven material；
5th step：Will above-mentioned needled punched nonwoven material be sent into gassing frame in singe, adjust burner size, make flame temperature control be
850℃；
6th step：It is 30g/m by mass area ratio2, meltblown layer mass area ratio be 5g/m2Smooth roll hot rolling spunbond（It is poly-
Propylene/polyester sheath core fiber）/ melt-blown（Polypropylene）/ spunbond（Polypropylene/polyester sheath core fiber）After Compound spinning crucible zone debatching, warp
Penetration hot-air oven preheats, and preheating temperature is 165 DEG C.
7th step：Needled punched nonwoven material after singing and preheating spun-bonded/melt-blown/spunbond Compound spinning in the 6th step are melted
Layer is sent into pressure rolling in the milling train that pressure is 2.5MPa together, winding, produces a kind of complex nonwoven filtering material.After tested, should
The average pore size of complex nonwoven filtering material is 16 μm, warp direction stretching strength is 1300N/5cm, and broadwise tensile strength is
1500N/5cm。
Claims (8)
1. a kind of complex nonwoven filtering material, it is characterised in that melted including spun-bonded/melt-blown compound successively/spunbond Compound spinning
Layer, the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer, the second/the first chopped fiber interposed layer and second
Short fiber layers.
A kind of 2. complex nonwoven filtering material as claimed in claim 1, it is characterised in that：Spun-bonded/melt-blown/the spunbond is multiple
It is any one in polypropylene, polyester, polyamide to close the fiber spun in crucible zone, or the double groups of the core-skin type being made up of two of which
Divide fiber.
A kind of 3. complex nonwoven filtering material as claimed in claim 1, it is characterised in that：Spun-bonded/melt-blown/the spunbond is multiple
The mass area ratio for closing spinning crucible zone is 25-55g/m2, the wherein mass area ratio of meltblown layer is 5-10g/m2。
A kind of 4. complex nonwoven filtering material as claimed in claim 1, it is characterised in that：Spun-bonded/melt-blown/the spunbond is multiple
Spinning crucible zone is closed to form through smooth roll hot rolling reinforcing.
A kind of 5. complex nonwoven filtering material as claimed in claim 1, it is characterised in that：The chopped fiber is polypropylene fibre, Asia
Any one or a few in the chopped fibers such as gram force, terylene, polyamide fibre, aramid fiber, polyphenylene sulfide.
A kind of 6. complex nonwoven filtering material as claimed in claim 1, it is characterised in that：The woven enhancement layer is third
Any one in synthetic fibre, terylene, acrylic, nylon, glass, polyphenylene sulfide, aramid fiber, PTFE woven fabrics.
A kind of 7. complex nonwoven filtering material as claimed in claim 1, it is characterised in that：The longitude and latitude of the woven enhancement layer
Close is 20-60 roots/10cm, mass area ratio 50-200g/m2。
8. a kind of preparation method of complex nonwoven filtering material, it is characterised in that comprise the following steps that：
The first step：Any one or a few in the chopped fibers such as polypropylene fibre, acrylic, terylene, polyamide fibre, aramid fiber, polyphenylene sulfide is mixed
Close, comb, lapping, obtain the first chopped fiber stratum reticulare；
Second step：Woven enhancement layer debatching is laid to above above-mentioned first chopped fiber stratum reticulare；
3rd step：Any one or a few in the chopped fibers such as polypropylene fibre, acrylic, terylene, polyamide fibre, aramid fiber, polyphenylene sulfide is mixed
Close, comb, then laid by lapping machine to above above-mentioned woven enhancement layer, form the second chopped fiber stratum reticulare；
4th step：By it is above-mentioned by the fluffy fiber material that the second short fiber layers, woven enhancement layer and the first short fiber layers are formed according to
It is secondary by pre-needling and the main acupuncture of multiple tracks, formed by the first short fiber layers, first/second chopped fiber interposed layer, woven enhancement layer,
The needled punched nonwoven material of the second/the first chopped fiber interposed layer and the second short fiber layers composition；
5th step：Above-mentioned needled punched nonwoven material is sent into gassing frame and singed, controls burner size, flame temperature control is existed
850-950℃；
6th step：By spun-bonded/melt-blown/spunbond Compound spinning crucible zone debatching preheating, preheating temperature is less than Compound spinning crucible zone fiber melt
5-10℃；
7th step：By the preheating spun-bonded/melt-blown in the needled punched nonwoven material after singing and the 6th step/spunbond Compound spinning crucible zone one
Pressure rolling in feeding milling train is played, it is 2-4MPa to control mill rolling force, winding, produces a kind of complex nonwoven filtering material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710988093.7A CN107754449A (en) | 2017-10-21 | 2017-10-21 | A kind of complex nonwoven filtering material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710988093.7A CN107754449A (en) | 2017-10-21 | 2017-10-21 | A kind of complex nonwoven filtering material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107754449A true CN107754449A (en) | 2018-03-06 |
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| CN111330356A (en) * | 2020-03-09 | 2020-06-26 | 浙江东蒙医疗器械有限公司 | Filter element, preparation method thereof and mask |
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