CN111394886A - Non-woven fabric processing technology and processing equipment thereof - Google Patents
Non-woven fabric processing technology and processing equipment thereof Download PDFInfo
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- CN111394886A CN111394886A CN202010200156.XA CN202010200156A CN111394886A CN 111394886 A CN111394886 A CN 111394886A CN 202010200156 A CN202010200156 A CN 202010200156A CN 111394886 A CN111394886 A CN 111394886A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/488—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with bonding agents
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G21/00—Combinations of machines, apparatus, or processes, e.g. for continuous processing
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to the technical field of production of needle-punched non-woven fabrics, and comprises a non-woven fabric processing technology, which comprises the following steps: preparation, lapping, needle loom reinforcement and post processing before the netting, wherein pile up the multilayer fibre web after, need carry out preliminary pressfitting processing to the edge of fibre web, at the reinforced in-process of main acupuncture, make adhesive and fibre web contact mix. Still include a non-woven fabrics processing equipment, including folding lapping device, one side of folding lapping device is provided with the second conveyer belt, and one side of second conveyer belt is provided with the material holding plate, and the top of material holding plate is provided with marginal press device. According to the invention, after different fibers are respectively subjected to opening carding and cotton mixing, different fiber net layers are respectively formed through the lapping machine, and then the different fiber layers are alternately stacked together, so that the layers are connected more tightly, the layering phenomenon is not easy to occur, the generation of waste materials is reduced, and the raw materials and the cost are saved.
Description
Technical Field
The invention relates to the technical field of production of needle-punched non-woven fabrics, in particular to a non-woven fabric processing technology and processing equipment thereof.
Background
The needle-punched non-woven fabric is one kind of dry non-woven fabric, and the principle of the needle-punched non-woven process is that the web is re-punched with barbed needles on triangular cross section edges, so that the barbed needles penetrate through the web to make the surface and local inner layer fiber of the web penetrate into the web. The original lofty web is compressed due to the friction between the fibers. As the needles exit the web, the penetrated fiber bundles disengage from the barbs and remain in the web. In this way, the plurality of fiber bundles entangle the web so that it can no longer return to its original fluffy state. After a number of needle-punching passes, a significant number of fiber bundles are inserted into the web, entangling the fibers with each other in the web, and forming a needle-punched nonwoven material having a certain strength and thickness.
In order to enhance the structural strength of nonwoven fabrics, composite nonwoven fabrics are beginning to enter the market, and in the prior art, patent publication No. CN102126310A discloses a nonwoven reinforced needle-punched nonwoven fabric and a method for manufacturing the same, the nonwoven fabric comprising a lower layer nonwoven web, nonwoven ribs and an upper layer nonwoven web. The mode of multi-axial layering is adopted, and reinforcing ribs in different directions are directly lined in the production of the needle-punched non-woven fabric.
According to the technical scheme, the non-woven fabric comprises the upper layer, the middle layer and the lower layer, the lower layer non-woven fiber net, the non-woven reinforcing ribs and the upper layer non-woven fiber net are mixed, and although the strength of the non-woven fabric can be enhanced, the composite non-woven fabric comprises the upper layer, the middle layer and the lower layer. In the traditional production process of the needle-punched non-woven fabric, only a single-layer fiber layer is needle-punched, so that the connection strength between fibers of the single-layer fiber layer is enhanced, and for producing the composite non-woven fabric, a method for better connecting fiber structures between fibers at the uppermost layer and fibers at the lowermost layer is unavailable, so that the composite layered non-woven fabric cannot exert the strength to the maximum extent.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a non-woven fabric processing technology, which can enable the fiber structures of all layers of the produced composite non-woven fabric to have stronger connection and increase the strength of the composite non-woven fabric.
The above object of the present invention is achieved by the following technical solutions:
a non-woven fabric processing technology specifically comprises the following steps:
step 1: preparing before web formation;
firstly, selecting a plurality of fiber materials to respectively open the bag and the cotton according to the requirements of product performance;
secondly, opening;
a. a coarse opening process;
putting a plurality of required fiber materials on a conveying flat curtain in proportion by three weighing bale openers, and respectively sending the fiber materials into a coarse opener to preliminarily open a plurality of blocky curled and compacted fibers to prepare preliminarily opened modified polyester staple fibers;
b. a fine opening process;
after the raw materials are preliminarily opened, the raw materials are respectively fed into a fine opener, full opening and pre-carding are carried out in the fine opener, so that the fibers are further opened and straightened, and the fibers are fed into the next procedure through a fan;
c. feeding cotton by an air pressure cotton box;
thirdly, carding;
the carding machine receives fibers fed by the air pressure cotton box according to the process set weight, and after the fibers enter a cotton feeding roller, the fibers are respectively carded into a plurality of fiber mesh thin layers through the action of double cylinders and double doffers;
step 2: laying a net;
firstly, cross lapping;
conveying various fiber nets by a lapping machine, respectively enabling the fiber nets to be repeatedly stacked into fiber layers with set thickness, and conveying the fiber layers to conveying equipment for use in the next procedure;
second, a plurality of fiber layer stacks;
the multiple fiber layers are stacked in a mutually staggered mode, and the stacked composite fiber layers enter conveying equipment for use in the next procedure;
thirdly, steam heating is carried out on the multiple layers of fiber webs in the transmission process, and the fiber webs are pressed after the steam heating;
fourth, a feeder: feeding the fiber web before the needling machine to uniformly clamp the fiber web before needling and feed the fiber web into a needle area;
step 3: reinforcing the needle machine;
firstly, pre-needling reinforcement;
preliminarily entangling and shaping the fiber web formed after carding, lapping and steam heating through a pre-needling process to ensure that the direction of the raw fiber web is unchanged, wherein the pre-needling machine is a single-needle-plate upper needling machine;
secondly, reinforcing the main needle;
further needling and tangling the fiber web preliminarily entangled by the pre-needling machine by a main needling machine which is a double-needle-plate ectopic opposite needling machine;
thirdly, trimming, needling and reinforcing;
fourthly, storing cloth: storing the cloth by using a cloth storage tension frame;
fifthly, coiling: coiling and winding by using an automatic fixed-length edge cutting and winding machine;
step 4: post-processing;
the thermal shrinkage setting mode is adopted to reduce the thermal shrinkage rate of the formed needle-punched non-woven fabric and improve the performance.
Through adopting above-mentioned technical scheme, after opening respectively to different fibre and carding and mix the cotton, form different fibre web layers respectively through the lapping machine, pile different fibre layers alternately together again, make and connect between each layer inseparabler, be difficult to appear the phenomenon of layering after the later stage continues to process. When the composite fiber net transmits, utilize steam to heat the composite fiber net, the steam of steam the inside enters into the fiber net, steam can regard as the connecting agent in a period to a certain extent, make fibrous structure in the fiber net can be comparatively inseparable the linking together under the effect that receives the external force, be difficult to take place the phenomenon of kick-backing simultaneously, consequently make fibrous structure between the fiber net connect inseparabler more, guarantee that fibrous structure between each layer can be better link together, thereby make the firm stability of connection between each layer of composite fiber layer more.
The present invention in a preferred example may be further configured to: in Step2, after stacking multiple webs, a preliminary press-fit process is required at the edges of the webs.
Through adopting above-mentioned technical scheme, after the preliminary shaping of composite fiber net, the pressfitting to the edge can make the whole shape of fibre net comparatively stable, and the fibrous structure pressfitting that will earlier be in the same place in the edge simultaneously can prevent later stage acupuncture processing and add the perk of fibre net edge, makes the fibre between every layer connect inseparabler, is difficult to the phenomenon of layering. Simultaneously at first carry out the pressfitting to the edge of fibre web, can guarantee the wholeness of fibre web, the condition that the waste material appears in the edge is less, reduces the production of waste material, can practice thrift the raw materials in the fibre web production process, improves the fibre web yield.
The present invention in a preferred example may be further configured to: in Step3, the binder is thoroughly mixed in contact with the web during the primary needling consolidation process.
Through adopting above-mentioned technical scheme, the adhesive enters into the fiber structure of fibre web at the in-process of acupuncture, can make abundant rather than inside fiber structure contact of adhesive, can guarantee the adhesive force between the fibre in the acupuncture to can guarantee the compactness of connecting between the fiber structure, also can make the efficiency greatly increased of acupuncture. Under the fluffy state of the fiber web, the adhesive can quickly permeate into the fiber structure, so that the processing efficiency is increased, the connection strength between the fiber structures of the composite fiber web is ensured, meanwhile, the subsequent process flow for reinforcing the fiber web can be reduced, the process time for manufacturing the fiber web is saved, and the efficiency is greatly improved.
The second aim of the invention is realized by the following technical scheme:
a non-woven fabric processing device comprises a folding lapping device arranged on one side of a discharge port of a lapping machine, wherein the folding lapping device comprises a first rack, a first conveyor belt arranged on the first rack and a telescopic lapping assembly arranged on one side of the first conveyor belt at the discharging side;
the first frame is fixedly connected with a supporting plate, the supporting plate is arranged below the first conveying belt, and the telescopic net folding assembly comprises a telescopic plate connected with the supporting plate in a sliding mode, a first connecting plate fixedly connected with the telescopic plate and a first material pressing roller rotatably connected with the first connecting plate;
one side of first frame is provided with the second frame, be provided with the second conveyer belt in the second frame, the second conveyer belt sets up the one side at first conveyer belt discharge gate, the direction of transfer mutually perpendicular of first conveyer belt and second conveyer belt, folding lapping device is provided with a plurality ofly, and is a plurality of folding lapping device sets up along the both sides of second conveyer belt direction of transfer crisscross to overlap each other on width direction's extension plane, relative expansion plate traffic direction sets up in step.
Through adopting above-mentioned technical scheme, different fibre web layers are through a plurality of lapping machine layerings net, different fibre webs enter into on the first conveyer belt, first conveyer belt transmits the fibre web on the expansion plate, the reciprocating motion of expansion plate can drive the continuous coincide of fibre web to the second conveyer belt, a plurality of crisscross each other and relative expansion plate can make different fibre webs crisscross the coincidence pile together each other, be different from simple piling up, make each layer fibre web composite connection inseparabler, thereby make the structure stability more of composite fibre web. When piling up composite fiber net, the second conveyer belt can drive the fibre net and remove, guarantees that the fibre net is laid the efficiency of piling up.
The present invention in a preferred example may be further configured to: one side fixedly connected with second connecting plate that the expansion plate is close to the second conveyer belt, the lower extreme fixedly connected with cylinder of backup pad, second connecting plate downwardly extending and with the piston rod fixed connection of cylinder.
Through adopting above-mentioned technical scheme, the reciprocating motion of cylinder piston rod can drive the expansion plate and carry out reciprocal sliding, can drive the fibre web at the in-process that the expansion plate slided in a reciprocating way and lay.
The present invention in a preferred example may be further configured to: the adjustable roller conveyor comprises a first conveyor belt and a second conveyor belt, and is characterized in that an adjusting roller is arranged above the first conveyor belt, an expansion bracket which drives the adjusting roller to move up and down is arranged on the first rack, the expansion bracket comprises two first connecting frames fixedly connected with the first rack, two lead screws respectively rotatably connected with the two first connecting frames, and a first movable plate in threaded fit with the lead screws, and the adjusting roller is arranged between the two first movable plates and rotatably connected with the first movable plate.
Through adopting above-mentioned technical scheme, in the expansion plate shrink state, make the lead screw rotate and drive first movable plate rebound, make the dancer rools follow and rise, can mention the fibre web of first conveyer belt incessantly transmission, guarantee the expansion plate in shrink state, the transmission that the fibre web can be normal, in the expansion plate extension state, the dancer rools descend, lay piling up the fibre web of continuing to can make piling up more steady of fibre web.
The present invention in a preferred example may be further configured to: a material bearing plate is arranged on one side of the second conveyor belt for discharging, the material bearing plate is fixedly connected with a second rack, two groups of edge pressing devices are arranged at the upper end of the material bearing plate and are respectively arranged on two sides of the running direction of the fiber net, and a second connecting rack is fixedly connected to the second rack;
the edge pressing device comprises two groups of second pressing rollers rotatably connected with the second connecting frame, a pressing plate fixedly connected with the second connecting frame, a second moving plate connected with the second connecting frame in a sliding manner, and a first pre-pricking pin fixedly connected with the lower end of the second moving plate, the pressing plate is arranged between the two groups of second pressing rollers, a gap for the running of a fiber mesh is reserved between the pressing plate and the material bearing plate, and through holes for the first pre-pricking pins to pass through are formed in the pressing plate and the material bearing plate;
the first pre-pricking needle is provided with a plurality of hook grooves which are uniformly distributed along the needle surface of the first pre-pricking needle.
Through adopting above-mentioned technical scheme, the second conveyer belt can be with the fibre web transmission after piling up to holding on the flitch, the fibre web when holding between flitch and the pressure flitch and remove, the second movable plate can reciprocate, it acts on the fibre web to drive first thorn needle in advance when the second movable plate reciprocates, can carry out the acupuncture compaction to the edge of fibre web, it is inseparabler to make the fibre structure of composite fiber web connect, guarantee the stability of fibre web edge department structure, make the phenomenon of layering be difficult to appear in the edge, can reduce the production of edge waste material simultaneously, save cost in the production process, and the yield is improved.
The present invention in a preferred example may be further configured to: the material bearing plate is provided with a third material pressing roller and a fourth material pressing roller above the material bearing plate, the third material pressing roller and the fourth material pressing roller are both rotatably connected with the second connecting frame and are arranged between the two sets of edge material pressing devices, a plurality of material pressing teeth are fixedly connected to the outer side of the third material pressing roller, a plurality of first steam spray holes are formed in the fourth material pressing roller, and the third material pressing roller and the fourth material pressing roller are alternately provided with a plurality of material pressing teeth.
Through adopting above-mentioned technical scheme, at the in-process of fibre web transmission, third nip roll and fourth nip roll can carry out the pressfitting to the mid portion of fibre web, make the structure between each layer of fibre web can tentatively link together, and simultaneously, the pressure material tooth on the third nip roll plays better pressfitting effect to the fibre web, makes more inseparable of fibre structural connection, and the pressfitting effect is better. Steam jet holes in the fourth nip roll act on the fiber web to enable the structure in the fiber web to be connected well, the combination of the third nip roll and the fourth nip roll has a better pressing effect on the fiber web, and the fiber structure is connected more closely.
The present invention in a preferred example may be further configured to: and a second steam jet hole is formed in the material bearing plate, and a steam jet pipe communicated with the through hole and the second steam jet hole is arranged below the material bearing plate.
Through adopting above-mentioned technical scheme, at the in-process of fibre web transmission, steam spray tube carries out steam heating to the fibre web from supreme down, and the steam of lower extreme and the steam combined action of upper end make the connection between the fibre web fibre inseparabler, and connection that can be better between the composite fiber web each layer is in the same place.
The present invention in a preferred example may be further configured to: one side of the discharging of the material bearing plate is provided with a needling machine, the needling machine comprises a machine body, a needling plate connected with the machine body in a sliding mode and a second pre-pricking needle fixedly connected with the needling plate, a liquid feeding pipe is communicated with the needling plate, and a plurality of adhesive outlets communicated with the liquid feeding pipe are formed in the second pre-pricking needle.
Through adopting above-mentioned technical scheme, when carrying out the acupuncture to the fibre web, the filling tube can let in the second with the adhesive in the felting needle in advance to through the adhesive export outflow, when the second is felted needle and fibre web contact in advance, can make the adhesive abundant combine together rather than inside fibrous structure, guarantee the compactness of connecting between the fibrous structure in the fibre web, and the adhesive can be more quick permeate fibrous structure in, make acupuncture efficiency higher.
In summary, the invention includes at least one of the following beneficial technical effects:
1. different fiber layers are stacked alternately, which is different from simple stacking, so that the connection among the layers is tighter, and the layering phenomenon is not easy to occur after the continuous processing in the later period, thereby the structure of the composite fiber web is more stable;
2. when the composite fiber net is transmitted, the composite fiber net is heated from the upper part and the lower part simultaneously by utilizing steam, the steam in the steam enters the fiber net and can be used as a connecting agent in a period of time to a certain extent, so that fiber structures in the fiber net can be connected together more closely under the action of external force, and simultaneously the phenomenon of rebounding is not easy to occur, so that the fiber structures between the fiber nets are connected more closely, and the connection between each layer of the composite fiber layer is firmer and more stable;
3. when the fiber web is needled, the liquid feeding pipe can introduce the adhesive into the second pre-needling needle and flow out through the adhesive outlet, so that the adhesive enters the fiber structure of the fiber web in the needling process, the adhesive can be fully contacted with the internal fiber structure of the fiber web, the adhesive force between fibers can be ensured in the needling process, the connection tightness between the fiber structures can be ensured, and the needling efficiency can be greatly increased.
Drawings
FIG. 1 is a schematic view of the overall structure of a nonwoven fabric processing apparatus;
FIG. 2 is a schematic view showing a detailed structure of a positional relationship between the lapping device and the second conveyor belt;
FIG. 3 is a schematic view showing a specific structure of a single lapping device;
FIG. 4 is a schematic diagram showing a specific structure above the material bearing plate;
FIG. 5 is a concrete schematic diagram showing the structure of the part above the material bearing plate;
FIG. 6 is a schematic structural view of a needle loom;
fig. 7 is a partially enlarged schematic view of a portion a in fig. 6.
In the figure, 1, a net lapping device; 2. a second frame; 3. a second conveyor belt; 4. a material bearing plate; 5. an edge pressing device; 51. a second nip roll; 52. a material pressing plate; 53. a second moving plate; 54. a first pre-pricking pin; 55. a second motor; 56. a crankshaft; 57. a connecting rod; 58. a slider; 59. a chute; 6. a second link frame; 7. a third nip roll; 71. pressing teeth; 8. a fourth nip roll; 81. a first steam jet hole; 9. a needle machine; 91. a body; 92. a needle board; 93. a second pre-pricking pin; 94. a liquid feeding pipe; 95. an adhesive outlet; 10. a first frame; 11. a first conveyor belt; 12. a telescopic overlapping net component; 121. a retractable plate; 122. a first connecting plate; 123. a first nip roll; 13. a support plate; 14. a second connecting plate; 15. a cylinder; 16. a regulating roller; 17. a telescopic frame; 171. a first connecting frame; 172. a screw rod; 173. a first moving plate; 174. a first motor; 18. a third connecting frame; 19. a through hole; 20. a second steam jet hole; 21. a steam nozzle; 22. a transition material roller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: the invention discloses a non-woven fabric processing technology, which specifically comprises the following steps:
step 1: preparing before web formation;
firstly, selecting a plurality of fiber materials to respectively open the bag and the cotton according to the requirements of product performance;
secondly, opening;
a. a coarse opening process;
putting a plurality of required fiber materials on a conveying flat curtain in proportion by three weighing bale openers, and respectively sending the fiber materials into a coarse opener to preliminarily open a plurality of blocky curled and compacted fibers to prepare preliminarily opened modified polyester staple fibers;
b. a fine opening process;
after the raw materials are preliminarily opened, the raw materials are respectively fed into a fine opener, full opening and pre-carding are carried out in the fine opener, so that the fibers are further opened and straightened, and the fibers are fed into the next procedure through a fan;
c. feeding cotton by an air pressure cotton box;
the fiber after the finish-starting machine enters an upper cotton box of the air pressure cotton box through an air conveying pipeline, the fiber falls into a lower cotton box in a snowflake shape under the action of a cotton feeding roller and a doffer, and then the fiber is given out in a constant volume mode in a balanced pressure mode, so that the density of a cotton layer body is consistent;
thirdly, carding;
the carding machine receives fibers fed by the air pressure cotton box according to the process set weight, and after the fibers enter a cotton feeding roller, the fibers are respectively carded into a plurality of fiber mesh thin layers through the action of double cylinders and double doffers;
step 2: laying a net;
firstly, cross lapping;
conveying various fiber nets by a lapping machine, respectively enabling the fiber nets to be repeatedly stacked into fiber layers with set thickness, and conveying the fiber layers to conveying equipment for use in the next procedure;
second, a plurality of fiber layer stacks;
the multiple fiber layers are stacked in a mutually staggered mode, and the stacked composite fiber layers enter conveying equipment for use in the next procedure; after the multilayer fiber web piles up, need carry out preliminary pressfitting to the edge of fiber web and handle, make inseparabler in the edge of fiber web, be difficult to appear the phenomenon of layering.
Thirdly, steam heating is carried out on the multiple layers of fiber webs in the transmission process, and the fiber webs are pressed after the steam heating;
fourth, a feeder: feeding the fiber web before the needling machine to uniformly clamp the fiber web before needling and feed the fiber web into a needle area;
step 3: reinforcing the needle machine;
firstly, pre-needling reinforcement;
preliminarily entangling and shaping the fiber web formed after carding, lapping and steam heating through a pre-needling process, ensuring that the direction of the raw fiber web is unchanged, wherein the pre-needling machine is a single-needle-plate upper needling machine, and the needle density of a needle plate cloth is 4500 pieces/meter;
secondly, reinforcing the main needle;
further needling and tangling the fiber web preliminarily entangled by the pre-needling machine by a main needling machine, wherein the main needling machine is a double-needle-plate ectopic opposite needling machine, and the needle plate cloth needle density is 13000 pieces/meter; during the main needling, the adhesive is passed into a plurality of needles and thoroughly mixed in contact with the web. The components of the adhesive are as follows: acrylic ester (70-90), methacrylic ester (10-30), internal crosslinking monomer (1.5-4), reactive monomer (5-9), mixed emulsifier (4-8), initiator (0.4), buffer (0.6) and deionized water (8.5-20).
Thirdly, trimming, needling and reinforcing;
fourthly, storing cloth: storing the cloth by using a cloth storage tension frame;
fifthly, coiling: coiling and winding by using an automatic fixed-length edge cutting and winding machine;
step 4: post-processing;
the thermal shrinkage setting mode is adopted to reduce the thermal shrinkage rate of the formed needle-punched non-woven fabric and improve the performance,
example two: the non-woven fabric processing equipment disclosed by the invention comprises a folding lapping device 1, wherein the folding lapping device 1 is arranged on one side of a discharge side of a lapping machine, a fiber web is laid and molded by the lapping machine and then enters the folding lapping device 1, and the folding lapping device 1 drives the fiber web to run and simultaneously can drive the fiber web to carry out secondary folding laying. One side of the folding lapping device 1, which is far away from the lapping machine, is provided with a second rack 2, a second conveyor belt 3 is connected to the second rack 2, and the conveying direction of the second conveyor belt 3 is perpendicular to the conveying direction of the folding lapping device 1. The folding and lapping device 1 can be provided with a plurality of (only two are shown in the figure), the folding and lapping devices 1 are arranged along the two sides of the conveying direction of the second conveying belt 3 in a staggered mode and are overlapped with each other on the extension surface in the width direction, the staggered stacking mode among multiple layers of fiber nets can be realized, and the connecting structure among the composite fiber nets is more compact.
One side of the second conveyor belt 3 for discharging is provided with a material bearing plate 4, an edge pressing device 5 is arranged above two sides (namely the edge of the fiber web) of the material bearing plate 4 in the fiber web transmission direction, and the edge pressing device 5 is connected with the second rack 2 through a second connecting frame 6. A plurality of third nip rolls 7 and fourth nip rolls 8 are arranged at the center above the material bearing plate 4. The second conveying belt 3 drives the fiber web to be conveyed, the fiber web enters the position above the material bearing plate 4 in the conveying process, and meanwhile the third pressure roller 7 and the fourth pressure roller 8 can press the center of the fiber web, so that the composite fiber layers are connected more closely. Meanwhile, the edge pressing device 5 can press the edge position of the fiber web, so that the fiber structure at the edge of the fiber web is more compact.
One side (the one side of the fibre web ejection of compact) that second conveyer belt 3 was kept away from to material-bearing plate 4 is provided with needle loom 9, and needle loom 9 can carry out the acupuncture to whole fibre web, and needle loom 9 can set up two (only show one in the picture), and one is needle loom 9 on the single needle board, and one is two needle boards dystopy to acupuncture needle loom 9, can make the fibre between the fibre web connect inseparabler, guarantees the structural strength of fibre web.
As shown in fig. 2, the folding and lapping device 1 includes a first frame 10, a first conveyor belt 11 disposed on the first frame 10, and a telescopic lapping assembly 12 disposed on a blanking side of the first conveyor belt 11, wherein the first conveyor belt 11 is connected to the first frame 10 through a connecting plate. The lower end of the first frame 10 is fixedly connected with a supporting plate 13, the supporting plate 13 is located under the first conveying belt 11 and is arranged close to the discharging side of the first conveying belt 11, the telescopic net folding assembly 12 comprises a telescopic plate 121 connected with the supporting plate 13 in a sliding manner, a first connecting plate 122 fixedly connected with the telescopic plate 121 and a first nip roll 123 rotatably connected with the first connecting plate 122, and the fiber web penetrates through the lower portion of the first nip roll 123.
The telescopic plate 121 and the support plate 13 can be matched by using a guide wheel and a guide rail, so that the sliding of the telescopic plate 121 is more stable.
The equal fixedly connected with second connecting plate 14 in expansion plate 121 length direction's both sides, the both sides fixedly connected with of first frame 10 and the corresponding cylinder 15 of second connecting plate 14, second connecting plate 14 and the piston rod fixed connection of cylinder 15, cylinder 15 can set up to damping cylinder 15, and damping cylinder 15 can drive the steady reciprocating motion of expansion plate 121. The moving directions of the opposite expansion plates 121 on both sides of the first conveyor belt 11 are always consistent, and when the expansion plate 121 on one side is in an extended state, the expansion plate 121 on the other side is in a contracted state, so that the alternative stacking of the cloth materials can be realized.
As shown in fig. 3, an adjusting roller 16 capable of moving up and down is disposed above the first conveyor belt 11, a fiber web passes through the adjusting roller 16, an expansion bracket 17 for driving the adjusting roller 16 to move up and down is disposed on the first frame 10, the expansion bracket 17 includes two first connecting brackets 171 fixedly connected to the first frame 10, two lead screws 172 respectively rotatably connected to the two first connecting brackets 171, and a first moving plate 173 in threaded engagement with the lead screws 172, a first motor 174 is fixedly connected to a lower end of the first frame 10, an output shaft of the first motor 174 is fixedly connected to the lead screws 172, the two lead screws 172 synchronously rotate through belt transmission, when the height of the first moving plate 173 needs to be adjusted, the first motor 174 is started, and the first motor 174 drives the two lead screw moving plates 172 to rotate by using a belt transmission assembly, thereby realizing synchronous slippage of the two first moving plates 173. The adjusting roller 16 is disposed between the two first moving plates 173 and is rotatably connected to the first moving plates 173, so that the first moving plates 173 can drive the adjusting roller 16 to move up and down.
When the retractable plate 121 is in an extended state, the adjusting roller 16 is in a descending state, and when the retractable plate 121 is in a retracted state, the adjusting roller 16 is in an ascending state, so that the web can be normally transferred, an adjusting effect is exerted on the continuous web, and the adjusting roller 16 and the retractable plate 121 are matched to realize smooth stacking of the web.
As shown in fig. 4, a transition material roller 22 is disposed between the second conveyor belt 3 and the material receiving plate 4, and the transition material roller 22 can perform a certain transition function on the fiber web, so that the transmission of the fiber web is more stable.
The second connecting frame 6 is connected with a third connecting frame 18, the third nip roll 7 and the fourth nip roll 8 are rotatably connected with the third connecting frame 18, and the third nip roll 7 and the fourth nip roll 8 can be powered by a driving motor, so that the third nip roll 7 and the fourth nip roll 8 can rotate along with the transmission speed of the fiber web. The third nip roll 7 and the fourth nip roll 8 are arranged between the two sets of edge nip devices 5, and play a role in nip of the web.
The edge pressing device 5 comprises two groups of second pressing rollers 51 rotatably connected with the second connecting frame 6, a pressing plate 52 fixedly connected with the second connecting frame 6, a second moving plate 53 connected with the second connecting frame 6 in a sliding manner, and a first pre-pricking pin 54 fixedly connected with the lower end of the second moving plate 53, wherein the pressing plate 52 is arranged between the two groups of second pressing rollers 51, a gap for the running of the fiber web is reserved between the pressing plate 52 and the material bearing plate 4, and the fiber web enters between the pressing plate 52 and the material bearing plate 4 through the transmission of the second pressing rollers 51.
Fixedly connected with second motor 55 on the second link 6, the output fixedly connected with bent axle 56 of second motor 55, bent axle 56 is kept away from the one end of second motor 55 and is passed through the connecting plate and be connected with second link 6, the last rotation of bent axle 56 is connected with connecting rod 57, the lower extreme of connecting rod 57 is articulated with the upper end of second movable plate 53, start second motor 55, second motor 55 drives bent axle 56 and rotates, bent axle 56 drives connecting rod 57 when rotating and removes, connecting rod 57 drives second movable plate 53 and slides from top to bottom on second link 6. The side wall of the second moving plate 53 can be fixedly connected with a sliding block 58, and the second connecting frame 6 is provided with a sliding groove 59 which is matched with the sliding block 58 in a clamping manner.
As shown in fig. 5, a plurality of hook grooves are formed in the first pre-pricking pin 54, the hook grooves are uniformly distributed along the needle surface of the first pre-pricking pin 54, through holes 19 for the first pre-pricking pin 54 to penetrate are formed in the pressure plate 52 and the material bearing plate 4, the first pre-pricking pin 54 is driven to act on the fiber web when the second moving plate 53 moves up and down, the edges of the fiber web can be subjected to needling compaction, the fiber structure of the composite fiber web is connected more tightly, the stability of the structure at the edge of the fiber web is guaranteed, the edge is not prone to layering, and meanwhile, the generation of edge waste materials can be reduced.
The second steam jet hole 20 is formed in the material bearing plate 4, the steam jet pipe 21 communicated with the through hole 19 and the second steam jet hole 20 is arranged below the material bearing plate 4, steam heating is conducted on the fiber net through the steam jet pipe 21 from bottom to top in the fiber net transmission process, steam acts on the fiber net, the structure in the fiber net can be well connected together, and the strength of the composite fiber net is improved.
The outer sides of the third nip rolls 7 are fixedly connected with a plurality of nip teeth 71, and the nip teeth 71 on two adjacent third nip rolls 7 are arranged in a staggered manner, so that different positions of the fiber web can be pressurized, and the fixing effect on the fiber web is ensured. A plurality of first steam jet holes 81 are formed in the fourth nip roll 8, a hollow shaft is arranged on a central shaft of the fourth nip roll 8 and communicated with the first steam jet holes 81, one end of the hollow shaft is communicated with a steam conveying pipe, and when the fourth nip roll 8 is attached to a fiber web, the steam conveying pipe can enable steam to act on the fiber web. The third nip rolls 7 and the fourth nip rolls 8 are alternately arranged, the combination of the third nip rolls 7 and the fourth nip rolls 8 has better laminating effect on the fiber web, and the fiber structures are more closely connected.
As shown in FIG. 6, the needling machine 9 includes a machine body 91, a needling board 92 slidably connected with the machine body 91, and a second pre-needling board 93 fixedly connected with the needling board 92, wherein a liquid feeding pipe 94 is communicated with the needling board 92, and the liquid feeding pipe 94 can feed the adhesive. Referring to fig. 7, the second pre-needling needle 93 is provided with a plurality of adhesive outlets 95 communicated with the liquid feeding pipe 94, when the fiber web is needled, the liquid feeding pipe 94 can introduce the adhesive into the second pre-needling needle 93 and flow out through the adhesive outlets 95, when the second pre-needling needle 93 is in contact with the fiber web, the adhesive can be fully combined with the internal fiber structure of the fiber web, and the connection tightness between the fiber structures in the fiber web is ensured.
The implementation principle of the embodiment is as follows: the fibre web enters into folding lapping device 1 after the lapping machine is laid the shaping, the flexible lapping subassembly 12 among a plurality of folding lapping devices 1 can drive the fibre web and remove the lapping, make the multilayer fibre web lay on second conveyer belt 3 according to certain mode of piling up, the relative expansion plate 121 moving direction in first conveyer belt 11 both sides remains unanimous all the time, when the expansion plate 121 of one side extends the state, the expansion plate 121 of opposite side then is the shrink state, can realize piling up in turn of cloth.
The second conveying belt 3 drives the fiber web to be conveyed, the fiber web enters the position above the material bearing plate 4 in the conveying process, and meanwhile the third pressure roller 7 and the fourth pressure roller 8 can press the center of the fiber web, so that the composite fiber layers are connected more closely. Meanwhile, the edge pressing device 5 can press the edge position of the fiber web, so that the fiber structure at the edge of the fiber web is more compact. In the process of pressing the fiber web, the upper part and the lower part of the fiber web are heated by steam, and the steam acts on the fiber web, so that the internal structures of the fiber web can be well connected together, and the strength of the composite fiber web is increased.
The fiber web after preliminary pressing enters the needle machine 9 for needle punching, when the fiber web is needle-punched, the liquid feeding pipe 94 can introduce the adhesive into the second pre-needling needle 93 and flow out through the adhesive outlet 95, when the second pre-needling needle 93 is contacted with the fiber web, the adhesive can be fully combined with the internal fiber structure of the fiber web, and the connection tightness between the fiber structures in the fiber web is ensured.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A non-woven fabric processing technology is characterized in that: the method specifically comprises the following steps:
step 1: preparing before web formation;
firstly, selecting a plurality of fiber materials to respectively open the bag and the cotton according to the requirements of product performance;
secondly, opening;
a. a coarse opening process;
putting a plurality of required fiber materials on a conveying flat curtain in proportion by three weighing bale openers, and respectively sending the fiber materials into a coarse opener to preliminarily open a plurality of blocky curled and compacted fibers to prepare preliminarily opened modified polyester staple fibers;
b. a fine opening process;
after the raw materials are preliminarily opened, the raw materials are respectively fed into a fine opener, full opening and pre-carding are carried out in the fine opener, so that the fibers are further opened and straightened, and the fibers are fed into the next procedure through a fan;
c. feeding cotton by an air pressure cotton box;
thirdly, carding;
the carding machine receives fibers fed by the air pressure cotton box according to the process set weight, and after the fibers enter a cotton feeding roller, the fibers are respectively carded into a plurality of fiber mesh thin layers through the action of double cylinders and double doffers;
step 2: laying a net;
firstly, cross lapping;
conveying various fiber nets by a lapping machine, respectively enabling the fiber nets to be repeatedly stacked into fiber layers with set thickness, and conveying the fiber layers to conveying equipment for use in the next procedure;
second, a plurality of fiber layer stacks;
the multiple fiber layers are stacked in a mutually staggered mode, and the stacked composite fiber layers enter conveying equipment for use in the next procedure;
thirdly, steam heating is carried out on the multiple layers of fiber webs in the transmission process, and the fiber webs are pressed after the steam heating;
fourth, a feeder: feeding the fiber web before the needling machine to uniformly clamp the fiber web before needling and feed the fiber web into a needle area;
step 3: reinforcing the needle machine;
firstly, pre-needling reinforcement;
preliminarily entangling and shaping the fiber web formed after carding, lapping and steam heating through a pre-needling process to ensure that the direction of the raw fiber web is unchanged, wherein the pre-needling machine is a single-needle-plate upper needling machine;
secondly, reinforcing the main needle;
further needling and tangling the fiber web preliminarily entangled by the pre-needling machine by a main needling machine which is a double-needle-plate ectopic opposite needling machine;
thirdly, trimming, needling and reinforcing;
fourthly, storing cloth: storing the cloth by using a cloth storage tension frame;
fifthly, coiling: coiling and winding by using an automatic fixed-length edge cutting and winding machine;
step 4: post-processing;
the thermal shrinkage setting mode is adopted to reduce the thermal shrinkage rate of the formed needle-punched non-woven fabric and improve the performance.
2. The non-woven fabric processing technology according to claim 1, characterized in that: in Step2, after stacking multiple webs, a preliminary press-fit process is required at the edges of the webs.
3. The non-woven fabric processing technology according to claim 1, characterized in that: in Step3, the binder is thoroughly mixed in contact with the web during the main needling.
4. The nonwoven fabric processing apparatus of claim 1, wherein: the non-woven fabric processing technology comprises 1-3, and comprises a folding and lapping device (1) arranged on one side of a discharge port of a lapping machine, wherein the folding and lapping device (1) comprises a first rack (10), a first conveyor belt (11) arranged on the first rack (10), and a telescopic lapping assembly (12) arranged on the blanking side of the first conveyor belt (11);
the first rack (10) is fixedly connected with a supporting plate (13), the supporting plate (13) is arranged below the first conveying belt (11), and the telescopic net folding assembly (12) comprises a telescopic plate (121) connected with the supporting plate (13) in a sliding mode, a first connecting plate (122) fixedly connected with the telescopic plate (121), and a first material pressing roller (123) rotatably connected with the first connecting plate (122);
one side of first frame (10) is provided with second frame (2), be provided with second conveyer belt (3) on second frame (2), second conveyer belt (3) set up the one side at first conveyer belt (11) feed opening, the direction of transfer mutually perpendicular of first conveyer belt (11) and second conveyer belt (3), folding lapping device (1) is provided with a plurality ofly, and is a plurality of folding lapping device (1) sets up along the both sides of second conveyer belt (3) direction of transfer to overlap each other on width direction's extension plane, it is relative expansion plate (121) direction of operation sets up in step.
5. The nonwoven fabric processing apparatus of claim 4, wherein: one side fixedly connected with second connecting plate (14) that expansion plate (121) is close to second conveyer belt (3), the lower extreme fixedly connected with cylinder (15) of backup pad (13), second connecting plate (14) downwardly extending and with the piston rod fixed connection of cylinder (15).
6. The nonwoven fabric processing apparatus of claim 4, wherein: adjusting roller (16) are arranged above first conveying belt (11), telescopic frame (17) which drives adjusting roller (16) to move up and down is arranged on first rack (10), telescopic frame (17) comprises two first connecting frames (171) fixedly connected with first rack (10), two screw rods (172) respectively rotatably connected with two first connecting frames (171) and a first moving plate (173) in threaded fit with screw rods (172), and adjusting roller (16) is arranged between two first moving plates (173) and rotatably connected with first moving plate (173).
7. The nonwoven fabric processing apparatus of claim 4, wherein: a material bearing plate (4) is arranged on one discharging side of the second conveying belt (3), the material bearing plate (4) is fixedly connected with the second rack (2), two groups of edge pressing devices (5) are arranged at the upper end of the material bearing plate (4), the two groups of edge pressing devices (5) are respectively arranged on two sides of the running direction of the fiber net, and a second connecting rack (6) is fixedly connected onto the second rack (2);
the edge pressing device (5) comprises two groups of second pressing rollers (51) rotatably connected with the second connecting frame (6), a pressing plate (52) fixedly connected with the second connecting frame (6), a second moving plate (53) connected with the second connecting frame (6) in a sliding manner, and a first pre-pricking pin (54) fixedly connected with the lower end of the second moving plate (53), the pressing plate (52) is arranged between the two groups of second pressing rollers (51), a gap for the running of a fiber net is reserved between the pressing plate (52) and the material bearing plate (4), and through holes (19) for the first pre-pricking pin (54) to pass through are formed in the pressing plate (52) and the material bearing plate (4);
the first pre-pricking pin (54) is provided with a plurality of hook grooves (541), and the hook grooves (541) are uniformly distributed along the needle surface of the first pre-pricking pin (54).
8. The nonwoven fabric processing apparatus of claim 7, wherein: the material bearing plate is characterized in that a third material pressing roller (7) and a fourth material pressing roller (8) are arranged above the material bearing plate (4), the third material pressing roller (7) and the fourth material pressing roller (8) are rotatably connected with the second connecting frame (6) and are arranged between two sets of edge material pressing devices (5), a plurality of material pressing teeth (71) are fixedly connected to the outer side of the third material pressing roller (7), a plurality of first steam spray holes (81) are formed in the fourth material pressing roller (8), and the third material pressing roller (7) and the fourth material pressing roller (8) are alternately provided with a plurality of material pressing teeth.
9. The nonwoven fabric processing apparatus of claim 8, wherein: the material bearing plate (4) is provided with a second steam jet hole (20), and a steam jet pipe (21) communicated with the through hole (19) and the second steam jet hole (20) is arranged below the material bearing plate (4).
10. The nonwoven fabric processing apparatus of claim 7, wherein: one side of the discharging of the material bearing plate (4) is provided with a needling machine (9), the needling machine (9) comprises a machine body (91), a needling plate (92) connected with the machine body (91) in a sliding manner and a second pre-needling needle (93) fixedly connected with the needling plate (92), the needling plate (92) is communicated with a liquid feeding pipe (94), and the second pre-needling needle (93) is provided with a plurality of adhesive outlets (95) communicated with the liquid feeding pipe (94).
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| CN202010200156.XA CN111394886A (en) | 2020-03-20 | 2020-03-20 | Non-woven fabric processing technology and processing equipment thereof |
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| CN202010200156.XA CN111394886A (en) | 2020-03-20 | 2020-03-20 | Non-woven fabric processing technology and processing equipment thereof |
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| CN112111964A (en) * | 2020-09-16 | 2020-12-22 | 苏州满博瑞膜科技有限公司 | Antibacterial and haze-preventing melt-blown fabric production device and preparation method thereof |
| CN112301543A (en) * | 2020-11-18 | 2021-02-02 | 浙江百联无纺科技有限责任公司 | Nanofiber non-woven fabric production facility |
| CN112742117A (en) * | 2020-12-14 | 2021-05-04 | 阿诗玲家居(上海)有限公司 | Preparation device of filtering material of water purifying equipment |
| CN113337961A (en) * | 2021-07-09 | 2021-09-03 | 天津工业大学 | Heat insulation felt for fire-fighting protective clothing and preparation method thereof |
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| CN116121958A (en) * | 2023-01-10 | 2023-05-16 | 江苏润众环保材料有限公司 | Fiber laying and needling equipment for manufacturing PTFE filter bag and application method thereof |
| CN116121958B (en) * | 2023-01-10 | 2023-10-03 | 江苏润众环保材料有限公司 | Fiber laying and needling equipment for manufacturing PTFE filter bag and application method thereof |
| CN117644693A (en) * | 2024-01-29 | 2024-03-05 | 山东莱芬无纺布有限公司 | Water-absorbing breathable non-woven fabric composite layer material and preparation process thereof |
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