CN103088557B - Producing method of double-component spun-bonded hot wind concretion non woven - Google Patents
Producing method of double-component spun-bonded hot wind concretion non woven Download PDFInfo
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Abstract
The invention discloses a producing method of double-component spun-bonded hot wind concretion non woven. The double-component spun-bonded hot wind concretion non woven is mainly used two different polymers as raw materials. After the double-component spun-bonded hot wind concretion non woven is respectively through dryness, extrusion and filter, the double-component spun-bonded hot wind concretion non woven enters into a composite spinning manifold. The double-component spun-bonded hot wind concretion non woven is distributed in the composite spinning manifold and enters into respective melt-measuring pump to be measured and then respectively enters into a spinneret component. The double-component spun-bonded hot wind concretion non woven is distributed and composited in the spinneret component and then erupted out through a spinneret plate. Then after the double-component spun-bonded hot wind concretion non woven is through cross air blasting cooling, airflow drafting, devillicate, silk, forming net, reserved form, reserved hot rolling or reserved acupuncture, hot wind concretion, ironing or cotton ginning and trimming rolls, the non woven is made. Products with the method adopted have the advantages of being certain in fluffiness, high in air permeability, high in water permeability, high size in stability, and high in brute force and large in modulus and can be used for industries of filtering gas and liquid, automobile tufted carpets and household tufted carpets, civil engineering, shoemaking and the like.
Description
technical fieldthe present invention relates to a kind of preparation method of synthetic fiber nonwoven products.
background technologyat present, wherein two main applications of synthetic fiber non-weaving cloth are as liquids and gases filtering material, tufted carpet base cloth.Wherein, more as the application of liquids and gases filtering material is hot rolling and needle fabric.Nonwovens rolls point (generally rolling an area is 18 ~ 22%) because cloth cover has, ventilative water permeability is poor, during for filtering material, there is resistance large, the shortcomings such as energy consumption is high, and filter efficiency is low; And without rolling a part, although be dispersed with the hole of a large amount of 3-D solid structures, but because fiber intersection does not bond, every root fiber is still in free state, by pressure medium and flow rate effect and under grit impacts, pore-size is unstable, control dirt power is poor, filtering accuracy decline, and when carrying out multiple film or other secondary filter material of compound as base material, because of roll a little or the free slippage of fiber impact and make composite bed damage or come off, affect filter effect.For addressing this problem, usually need first to soak the process of (acrylic acid) glue to Nonwovens, owing to containing the harmful substances such as a certain amount of formaldehyde in acrylate glue, easily produce secondary pollution to a certain degree, and under uniform temperature condition Long-Time Service, can coking phenomenon be produced.Needle fabric is owing to affecting by factors such as pin holes, there is hole equally uneven, the problems such as control dirt power is low, and compactness is poor, surface irregularity, stiffness are bad, not foldable, not easy to clean etc., constrain its range of application, when for combined filtration base material, equally because slippage mutual between surface irregularity and fiber causes the damage of filter membrane etc. and comes off.
Ji Bu is that tufted carpet produces indispensable important materials, and determines the style of tufted carpet, quality and class to a great extent.Traditional tufted carpet base cloth, be mostly polypropylene fibre flat filament braided fabric or megila, this kind of material is coarse, thick and heavy, and powerful low, poor stability, the carpet made is not durable, unsightly, yielding, fugitive limit, general only for common interior decoration, be not suitable for as high-grade decorative carpet, as saloon bar, high-grade commercial office room, high-grade residential carpet and string rug, due to poor ductility, not easily compression molding, is not suitable for car carpeting yet.Also have and adopt terylene Nonwovens or terylene and polyamide fibre woven fabric as tufted carpet base cloth, but all there is various defect; Nonwovens rolls a little because cloth cover has, and affects tufting effect, without roll a place due to fiber loose, free slippage can affect flocking fastness, and due to Tear strength on Nonwovens low, the durability of carpet is affected; Terylene or polyamide fibre woven fabric stiffness poor, during Density height, under the effect of tufting needle, damage is caused to cloth cover fiber, powerful to decline; When Density is low, inadequate to the power of seizing on both sides by the arms of carpet yarn, easily produce lint phenomenon.And all there is fugitive limit, cut out the problems such as the easy lint in place in this different materials.
Summary of the invention
The object of the present invention is to provide a kind of production method with extraordinary flexibility, bulkiness, extensibility, gas permeability and absorbability and the two component hot blast consolidated nonwoven cloth compared with high-tenacity.
The present invention is mainly by component A and B component two kinds of polymer drying or crystallizing and drying respectively, melt extruded, composite spinning box body is entered after filtration, respective melt metering pump metering is entered through distributing in composite spinning casing, then the composite spining module be installed in main box is entered, spray through spinnerets after distribution plate compound in composite spining module, form continuous print bicomponent filament yarn, then cool through lateral blowing, air drawing, again through sub-wire, pendulum wire, become net, pre-setting, pre-hot rolling or pre-needling, enter penetration hot blast consolidation device consolidation, again through hot light or cotton ginning, trimming reels and makes non-weaving cloth.
Raw material A component of the present invention and B component be two kinds of fusing points different can fibre-forming polymer, the difference of its fusing point is 10-160 DEG C, and their compositely proportional is: component A/B component is between 5%/95% ~ 95%/5%.The combination of above-mentioned component A and B component can have a variety of, as PET and CO-PET, PET and PA6, and PET and PP, PET and PE, PA6 and CO-PET, PA6 and PP, PA6 and PE, CO-PET and PP or CO-PET and PE.
Concrete operations of the present invention are as follows:
(1) dry or crystallizing and drying temperature: 80 ~ 190 DEG C, after dry, section is moisture is 20 ~ 90ppm;
(2) melt extruded, screw extruder operating temperature: 100 ~ 305 DEG C;
(3) pressure: 5 ~ 12Mpa after filter filter, spinning system heat medium temperature: 100 ~ 305 DEG C;
(4) quenching air temperature: 18 ~ 26 DEG C, relative humidity: 60 ~ 85%, air channel static pressure: 100 ~ 800pa, wind speed: 0.3 ~ 1.0 m/s;
(5) air drawing pressure: 0.3 ~ 0.8Mpa; Best air drawing speed changes, within the scope of 2000 ~ 6000 m/min according to the different of the formation of component A and B component;
(6) sub-wire device voltage: 5000 ~ 20000v;
(7) pendulum wire device frequency: 50 ~ 1000n/min., the amplitude of oscillation: 5 ~ 50mm;
(8) lapper process speed: 2 ~ 150m/min, pony press temperature: 60 ~ 230 DEG C, inhales net wind speed: 2 ~ 8 m/min;
(9) pre-setting temperature: 60 ~ 230 DEG C;
(10) pre-hot-rolled temperature: 60 ~ 230 DEG C; Or pre-needling: bestock: 3000 ~ 6000 pins/m, punch frequency: 600 ~ 1200 times/min, acupuncture traverse: 20 ~ 40mm, depth of needling: 3 ~ 10mm;
(11) hot blast consolidation device consolidation, its hot blast temperature is 100 ~ 240 DEG C;
(12) plate and spend roll temperature: 80 ~ 230 DEG C;
(13) winding speed: 2 ~ 150 m/min.
The grammes per square metre of product is 15 ~ 500g/m
2, product fabric width is 1.6 ~ 6.0m, and filament number is 2 ~ 20dpf, and speed of production is 2 ~ 150m/min.
The bi-component composite fiber structure that the present invention obtains comprises following several form: (1) skin-core structure: as circular core-skin, partially circular core-skin or triangle core-skin, and it is that the raw material adopted is as CO-PET using the lower component of fusing point as cortex; Using the higher component of fusing point as sandwich layer, as PET, PA6 or PA66.Wherein the mass ratio of skin component and core component is 20/80-50/50, and filament number is 1-20dpf, and product grammes per square metre scope is 15-300g/ m
2(2) hybrid architecture, as fabric of island-in-sea type (3) parallel type structure, as half-moon-shaped or sandwiched (4) embedded structure, as inserted trilobal cross.
The present invention compared with prior art tool has the following advantages:
1. adopt two components spunbond hot blast consolidated nonwoven cloth that the inventive method obtains, due to the fiber intersection points bonding consolidation style of its uniqueness, make the most of shortcoming which overcoming hot rolling and needle fabric, there is ventilative water permeability good, stiffness is good, collapsible, smooth surface, compactness is good, 3 D stereo pore structure dimensionally stable, not containing any chemical adhesive etc., and due to tension and Tear strength large, ventilative water permeability is good, easy to clean, therefore time for filtering, energy consumption is low, efficiency is high, long service life, it is the base material (particularly film base material) of a kind of highly desirable liquids and gases filtering material and high accuracy combined filtration parting material.
2. adopt the inventive method obtain two components spunbond hot blast consolidated nonwoven cloth possessed all characteristics required for high-grade tufted carpet base cloth: tension and Tear strength high, compactness is good, smooth surface is smooth, stiffness is high, DIMENSIONAL STABILITY is high, ductility is good, moldable shaping, corrosion-resistant, anti-aging, anti-insect etc., and due to the bonding of fiber intersection points place, three dimensional pore structures is stablized, have carpet yarn and extremely strong seize power on both sides by the arms, not easily lint, cut out not fugitive limit, place, be the rectangular or piece tufted carpet of the top grade of base cloth with it, can be widely used in saloon bar, high-grade commercial office room, market, civil aircraft, family expenses and automobile carpet field.
3. in addition, due to high strength, high Tear strength and high air-and water-permeable performance that two component spunbond hot blast consolidated nonwoven cloth has, make the medium-to-high grade drain bar film of settlement of foundation process engineering etc. of the beach of its footwear material supporting material that can be applicable to shoe industry and geological condition complexity, region, marsh.
Accompanying drawing explanation
Fig. 1 is technological process simplified schematic diagram of the present invention.
Fig. 2 is circular core-skin fibre cross section simplified schematic diagram.
Fig. 3 is partially circular core-skin fibre cross section simplified schematic diagram.
Fig. 4 is triangle core-skin fibre cross section simplified schematic diagram.
Fig. 5 is fabric of island-in-sea type blended fiber cross section simplified schematic diagram.
Fig. 6 is half-moon-shaped blended fiber cross section simplified schematic diagram.
Fig. 7 is sandwiched collateral fiber cross section simplified schematic diagram.
Fig. 8 is mosaic three leaf fibre cross section simplified schematic diagram.
Detailed description of the invention
embodiment 1:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PET section, fusing point: 260 DEG C; B component polymer is CO-PET, fusing point: 150 DEG C.
Two kinds of polymer are respectively through crystallizing and drying, and wherein component A pre-crystallization temperature: 165 DEG C, baking temperature: 175 DEG C, after dry, section is moisture is≤30ppm.B component pre-crystallization temperature: 90 DEG C, baking temperature: 105 DEG C, after dry, section is moisture is≤45ppm.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 265 DEG C, 275 DEG C, 280 DEG C, 282 DEG C, 285 DEG C, 285 DEG C; B component extruder each district temperature: 180 DEG C, 200 DEG C, 210 DEG C, 215 DEG C, 220 DEG C, 220 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 10Mpa, B component: 8Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 285 DEG C, B component: 220 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 13Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=70/30, composite construction: circular skin-core structure, component A is sandwich layer, and B component is cortex, cross section as shown in Figure 2, filament number: 3dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 20 DEG C, relative humidity: 70%, air channel static pressure: 450pa, wind speed: 0.5m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.55Mpa, draft speed: > 5500m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 450 beats/min, the amplitude of oscillation: 8mm.The tow set is placed in lapping on lapper, lapper process speed: 135m/min, inhales net wind speed: 2.5m/min.The net completed is delivered to pre-setting on presetting device, pre-setting temperature: 120 DEG C.Fiber web after pre-setting passes through pre-hot-rolling arrangement, pre-hot-rolled temperature: 125 DEG C.Allow the fiber web after hot rolling by hot blast consolidation device again, its hot blast temperature is 155 DEG C.Plated and cotton ginning by fiber web after consolidation, its temperature is 147 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 132m/min.Fabric width can be obtained again: 2.5 meters, grammes per square metre: 20g/m through cutting
2product.
embodiment 2:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PET section, and fusing point: 260 DEG C, B component polymer is PA6, fusing point: 220 DEG C.Two kinds of polymer are respectively through crystallizing and drying, and wherein component A pre-crystallization temperature: 165 DEG C, baking temperature: 175 DEG C, after dry, section is moisture is≤30ppm.B component baking temperature: 150 DEG C, after dry, section is moisture is≤50ppm.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 265 DEG C, 275 DEG C, 280 DEG C, 282 DEG C, 285 DEG C, 285 DEG C; B component extruder each district temperature: 225 DEG C, 235 DEG C, 245 DEG C, 254 DEG C, 257 DEG C, 257 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 10Mpa, B component: 11Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 285 DEG C, B component: 257 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 16Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=80/20, fabric of island-in-sea type mixed structure: component A is island, B component is ocean, cross section as shown in Figure 5, filament number: 6dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 19 DEG C, relative humidity: 70%, air channel static pressure: 450pa, wind speed: 0.6m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.57Mpa, draft speed: > 5500m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 540 beats/min, the amplitude of oscillation: 20mm.The tow set is placed in lapping on lapper, lapper process speed: 30.5m/min, inhales net wind speed: the net completed is delivered to pre-setting on presetting device by 4.5m/min., pre-setting temperature: 190 DEG C.Fiber web after pre-setting passes through pre-hot-rolling arrangement, pre-hot-rolled temperature: 195 DEG C.Allow the fiber web after hot rolling by hot blast consolidation device again, its hot blast temperature is 225 DEG C.Plated and cotton ginning by fiber web after consolidation, its temperature is 219 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 30m/min.Fabric width can be obtained again: 4.2 meters, grammes per square metre: 120g/m through cutting
2product.
embodiment 3:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PA6 section, fusing point: 220 DEG C; B component polymer is CO-PET, fusing point: 140 DEG C.
Two kinds of polymer drying, wherein component A baking temperature respectively: 150 DEG C, after dry, section is moisture is≤50ppm.B component pre-crystallization temperature: 80 DEG C, baking temperature: 98 DEG C, after dry, section is moisture is≤35ppm.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 225 DEG C, 235 DEG C, 245 DEG C, 254 DEG C, 257 DEG C, 257 DEG C; B component extruder each district temperature: 170 DEG C, 190 DEG C, 200 DEG C, 205 DEG C, 210 DEG C, 210 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 10Mpa, B component: 8Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 257 DEG C, B component: 210 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 13Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=90/10, mosaic trilobed structure, B component is that blade tip inlays part, cross section as shown in Figure 8, filament number: 4dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 19 DEG C, relative humidity: 70%, air channel static pressure: 500pa, wind speed: 0.55m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.56Mpa, draft speed: > 5500m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 500 beats/min, the amplitude of oscillation: 25mm.The tow set is placed in lapping on lapper, lapper process speed: 51m/min, inhales net wind speed: the net completed is delivered to pre-setting on presetting device by 4.0m/min., pre-setting temperature: 110 DEG C.Fiber web after pre-setting passes through pre-hot-rolling arrangement, pre-hot-rolled temperature: 115 DEG C.Allow the fiber web after hot rolling by hot blast consolidation device again, its hot blast temperature is 145 DEG C.Plated and cotton ginning by fiber web after consolidation, its temperature is 138 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 50m/min.Fabric width can be obtained again: 2.5 meters, grammes per square metre: 60g/m through cutting
2product.
embodiment 4:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PET section, fusing point: 260 DEG C; B component polymer is PE section, fusing point: 130 DEG C.
Wherein component A needs pre-crystallized drying, pre-crystallization temperature: 165 DEG C, baking temperature: 175 DEG C, and after dry, section is moisture is≤30ppm.B component does not need pre-crystallized drying.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 265 DEG C, 275 DEG C, 280 DEG C, 282 DEG C, 285 DEG C, 285 DEG C; B component extruder each district temperature: 180 DEG C, 210 DEG C, 210 DEG C, 225 DEG C, 230 DEG C, 230 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 10Mpa, B component: 11Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 285 DEG C, B component: 230 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 13Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=20/80, triangle skin-core structure, component A is sandwich layer, and B component is cortex, cross section as shown in Figure 4, filament number: 10dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 23 DEG C, relative humidity: 70%, air channel static pressure: 350pa, wind speed: 0.35m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.50Mpa, draft speed: > 5500m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 600 beats/min, the amplitude of oscillation: 27mm.The tow set is placed in lapping on lapper, lapper process speed: 12m/min, inhales net wind speed: the net completed is delivered to pre-setting on presetting device by 6.5m/min., pre-setting temperature: 120 DEG C.Fiber web after pre-setting passes through pre-hot-rolling arrangement, pre-hot-rolled temperature: 125 DEG C.By after pre-hot rolling fiber web carry out pre-needling, pre-needling machine bestock: 2000 pins/m, punch frequency: 940, acupuncture traverse: 25mm, pre-needling pin is dark: 4.121mm.Plated and cotton ginning by fiber web after acupuncture, its temperature is 130 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 11.5m/min.Fabric width can be obtained again: 2.5 meters, grammes per square metre: 200g/m through cutting
2product.
embodiment 5:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PP section, fusing point: 164 DEG C; B component polymer is PE section, fusing point: 130 DEG C.
Two kinds of polymer do not need crystallizing and drying.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 185 DEG C, 200 DEG C, 215 DEG C, 217 DEG C, 230 DEG C, 235 DEG C; B component extruder each district temperature: 180 DEG C, 210 DEG C, 210 DEG C, 225 DEG C, 230 DEG C, 230 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 10Mpa, B component: 8Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 235 DEG C, B component: 230 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 13Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=75/25, partially circular skin-core structure, component A is sandwich layer, and B component is cortex, cross section as shown in Figure 3, filament number: 2.5dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 23 DEG C, relative humidity: 70%, air channel static pressure: 400pa, wind speed: 0.3m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.50Mpa, draft speed: > 5000m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 450 beats/min, the amplitude of oscillation: 8mm.The tow set is placed in lapping on lapper, lapper process speed: 150m/min, inhales net wind speed: the net completed is delivered to pre-setting on presetting device by 2.5m/min., pre-setting temperature: 120 DEG C.Allow the fiber web after pre-setting by pre-hot-rolling arrangement, pre-hot-rolled temperature: 125 DEG C.Allow the fiber web after hot rolling by hot blast consolidation device again, its hot blast temperature is 135 DEG C; Plated and cotton ginning by fiber web after consolidation, its temperature is 128 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 147m/min.Fabric width can be obtained again: 2.5 meters, grammes per square metre: 15g/m through cutting
2product.
embodiment 6:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PET section, fusing point: 260 DEG C; B component polymer is CO-PET, fusing point: 160 DEG C.
Two kinds of polymer are respectively through crystallizing and drying, and wherein component A pre-crystallization temperature: 165 DEG C, baking temperature: 175 DEG C, after dry, section is moisture is≤30ppm.B component pre-crystallization temperature: 100 DEG C, baking temperature: 115 DEG C, after dry, section is moisture is≤35ppm.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 265 DEG C, 275 DEG C, 280 DEG C, 282 DEG C, 285 DEG C, 285 DEG C; B component extruder each district temperature: 190 DEG C, 210 DEG C, 220 DEG C, 225 DEG C, 230 DEG C, 230 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 11Mpa, B component: 8Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 285 DEG C, B component: 230 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 13Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=82/18, sandwiched parallel construction: component A is sandwich layer, B component is two sides interlayer, cross section as shown in Figure 7, filament number: 16dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 18 DEG C, relative humidity: 70%, air channel static pressure: 700pa, wind speed: 0.7m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.65Mpa, draft speed: > 5000m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 580 beats/min, the amplitude of oscillation: 30mm.The tow set is placed in lapping on lapper, lapper process speed: 10m/min, inhales net wind speed: the net completed is delivered to pre-setting on presetting device by 6.5m/min., pre-setting temperature: 130 DEG C.Allow the fiber web after pre-setting by pre-hot-rolling arrangement, pre-hot-rolled temperature: 135 DEG C.The pre-setting fiber web after hot rolling is allowed to carry out pre-needling, pre-needling machine bestock again: 2000 pins/m, punch frequency: 940, acupuncture traverse: 25mm, pre-needling pin is dark: 4.221mm.Plated and cotton ginning by fiber web after consolidation, its temperature is 162 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 3.0m/min.Fabric width can be obtained again: 2.4 meters, grammes per square metre: 400g/m through cutting
2product.
embodiment 7:
In the technological process simplified schematic diagram of the present invention shown in Fig. 1, component A polymer is PET section, fusing point: 260 DEG C; B component polymer is PP section, fusing point: 164 DEG C.
Wherein component A need through crystallizing and drying, pre-crystallization temperature: 165 DEG C, baking temperature: 175 DEG C, and after dry, section is moisture is≤30ppm.Screw extruder is adopted to melt extrude respectively, component A extruder each district temperature: 265 DEG C, 275 DEG C, 280 DEG C, 282 DEG C, 285 DEG C, 285 DEG C; B component extruder each district temperature: 185 DEG C, 200 DEG C, 215 DEG C, 217 DEG C, 230 DEG C, 235 DEG C.The melt that screw extruder is extruded is respectively through frit, and rear pressure filtered by filter: component A: 10Mpa, B component: 8Mpa.Filtered melt enters two spinning manifolds respectively, spinning body temperature: component A: 285 DEG C, B component: 235 DEG C.Two component melts enter same composite spining module respectively, its pressure: component A: 12Mpa, B component: 13Mpa after the metering of respective measuring pump.Both compositely proportionals: A/B=50/50, semilune parallel construction, component A is sandwich layer, and B component is cortex, cross section as shown in Figure 6, filament number: 8dpf.Extrude after compound in filament spinning component, then become tow, quenching air temperature through lateral blowing cooling: 19 DEG C, relative humidity: 70%, air channel static pressure: 550pa, wind speed: 0.6m/s.This tow is stretched by pipe type air flow drawing device, air drawing pressure: 0.55Mpa, draft speed: > 5000m/min.Then tow after being stretched carries out sub-wire by sub-wire device, and sub-wire device voltage is 8000v.After cooling drawing-off and tow through sub-wire carries out pendulum wire by pendulum wire device, pendulum wire frequency: 550 beats/min, the amplitude of oscillation: 22mm.The tow set is placed in lapping on lapper, lapper process speed: 18m/min, inhales net wind speed: the net completed is delivered to pre-setting on presetting device by 6.5m/min., pre-setting temperature: 120 DEG C.Allow the fiber web of pre-setting by pre-hot-rolling arrangement, pre-hot-rolled temperature: 125 DEG C.Allow the fiber web after hot rolling by hot blast consolidation device again, its hot blast temperature is 170 DEG C; Plated and cotton ginning by fiber web after consolidation, its temperature is 163 DEG C.Then trimming winding is carried out, winding speed with trimming coiler device: 17.5m/min.Fabric width can be obtained again: 2.5 meters, grammes per square metre: 150g/m through cutting
2product.
Claims (6)
1. the production method of two component spun-bond process hot blast consolidated nonwoven cloth, it is by component A and B component two kinds of polymer drying or crystallizing and drying respectively, melt extruded, composite spinning box body is entered after filtration, respective melt metering pump metering is entered through distributing in composite spinning casing, then the composite spining module be installed in main box is entered, spray through spinnerets after distribution plate compound in composite spining module, form continuous print bicomponent filament yarn, then cool through lateral blowing, air drawing, again through sub-wire, pendulum wire, become net, pre-setting, pre-hot rolling or pre-needling, enter penetration hot blast consolidation device consolidation, again through hot light or cotton ginning, trimming reels and makes non-weaving cloth, it is characterized in that:
(1) dry or crystallizing and drying temperature: 80 ~ 190 DEG C, after dry, section is moisture is 20 ~ 90ppm;
(2) melt extruded, screw extruder operating temperature: 100 ~ 305 DEG C;
(3) pressure: 5 ~ 12Mpa after filter filter, spinning system heat medium temperature: 100 ~ 305 DEG C;
(4) quenching air temperature: 18 ~ 26 DEG C, relative humidity: 60 ~ 85%, air channel static pressure: 100 ~ 800pa, wind speed: 0.3 ~ 1.0m/s;
(5) air drawing pressure: 0.3 ~ 0.8Mpa;
(6) sub-wire device voltage: 5000 ~ 20000v;
(7) pendulum wire device frequency: 50 ~ 1000n/min., the amplitude of oscillation: 5 ~ 50mm;
(8) lapper process speed: 2 ~ 150m/min, pony press temperature: 60 ~ 230 DEG C, inhales net wind speed: 2 ~ 8m/min;
(9) pre-setting temperature: 60 ~ 230 DEG C;
(10) pre-hot-rolled temperature: 60 ~ 230 DEG C; Or pre-needling: bestock: 3000 ~ 6000 pins/m, punch frequency: 600 ~ 1200 times/min, acupuncture traverse: 20 ~ 40mm, depth of needling: 3 ~ 10mm;
(11) hot blast consolidation device consolidation, its hot blast temperature is 100 ~ 240 DEG C;
(12) plate and spend roll temperature: 80 ~ 230 DEG C;
(13) winding speed: 2 ~ 150m/min.
2. the production method of according to claim 1 pair of component spunbond hot blast consolidated nonwoven cloth, is characterized in that: component A and B component be two kinds of fusing points different can fibre-forming polymer, the difference of its fusing point is 10-160 DEG C.
3. the production method of the two components spunbond hot blast consolidated nonwoven cloth according to claims 2, is characterized in that: the compositely proportional of composite fibre is: component A/B component is between 5%/95% ~ 95%/5%.
4. the production method of the two components spunbond hot blast consolidated nonwoven cloth according to claims 3, it is characterized in that: bi-component composite fiber structure comprises following several form: (1) skin-core structure: with the lower component of fusing point for cortex, with the higher component of fusing point for sandwich layer, (2) mixed fine structure, (3) parallel type structure, (4) embedded structure.
5. the production method of according to claim 1 pair of component spunbond hot blast consolidated nonwoven cloth, is characterized in that: the grammes per square metre of product is 15 ~ 500g/m
2, product fabric width is 1.6 ~ 6.0m, and filament number is 2 ~ 20dpf, and speed of production is 2 ~ 150m/min.
6. the production method of according to claim 1 pair of component spunbond hot blast consolidated nonwoven cloth, is characterized in that: air drawing speed changes, within the scope of 2000 ~ 6000m/min according to the different of the formation of component A and B component.
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