CN118186686A - Production process of flushable spunlaced fabric and net forming device thereof - Google Patents
Production process of flushable spunlaced fabric and net forming device thereof Download PDFInfo
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- CN118186686A CN118186686A CN202410499290.2A CN202410499290A CN118186686A CN 118186686 A CN118186686 A CN 118186686A CN 202410499290 A CN202410499290 A CN 202410499290A CN 118186686 A CN118186686 A CN 118186686A
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- 239000004744 fabric Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 136
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 229920001131 Pulp (paper) Polymers 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 230000007547 defect Effects 0.000 abstract description 6
- 239000004745 nonwoven fabric Substances 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract 1
- 229920000297 Rayon Polymers 0.000 description 13
- 241000381602 Vachellia nebrownii Species 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229920000433 Lyocell Polymers 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 241001397809 Hakea leucoptera Species 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920006052 Chinlon® Polymers 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- HGINCPLSRVDWNT-UHFFFAOYSA-N acrylaldehyde Natural products C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 chlorfiber Polymers 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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- Nonwoven Fabrics (AREA)
Abstract
The invention provides a production process of flushable spunlaced fabric and a net forming device thereof, belongs to the technical field of non-woven fabrics, and aims to solve the technical problems of large water consumption and electric quantity for wet-process net forming, easy slurry block generation and easy impurity generation in fiber webs. The invention comprises at least one net forming device and at least one group of transferring devices, wherein fibers are paved on the net paving device to form a fiber net, and the fiber net is transported to a next process through the transferring devices; the lapping device comprises a hopper, a filter screen and a lapping suction device, wherein the hopper is used for storing fibers, an opening is formed in the upper portion of the hopper, a stirring device is arranged in the hopper, the lapping suction device is arranged above the opening of the hopper, at least one section of the filter screen is arranged between the hopper and the lapping suction device, the lapping suction device can provide suction, fibers positioned at the top in the hopper are sucked by the lapping suction device on the other side of the filter screen, and a fiber net is formed on one side, close to the hopper, of the filter screen by being bound. According to the invention, by changing the mode of fiber laying into a fiber web, substances which can cause cloth defects, such as pulp blocks, caking, foreign matters, impurities and the like, can be naturally screened out according to the principle of web forming in the process of web forming, so that the quality problem of cloth defects is solved.
Description
Technical Field
The invention belongs to the technical field of non-woven fabrics, and particularly relates to a production process of a flushable spunlaced fabric and a web forming device thereof.
Background
The current integral process of the flushable spunlaced fabric comprises three stages, namely a pulping and net-forming process at the initial stage, a spunlaced reinforcing process at the middle stage and a drying and forming process at the later stage.
The water thorn cloth that can dash out is spread by wet process mode at present, and the needle wood pulp is mixed with viscose staple fiber or tencel staple fiber after hydraulic fluffing after breaking up through the hydrapulper, and the wood pulp fiber after mixing is evenly spread on the water thorn trawl after diluting again with viscose staple fiber or tencel staple fiber, and the water thorn trawl is issued and is provided with vacuum suction device and takes out fibre most moisture, makes fibre net form on the net face again, accomplishes the spread.
For example, patent publication No. CN103397474a discloses a flushable fully degradable spunlaced nonwoven fabric, a manufacturing method and a production line, the manufacturing method comprises: (1) Spreading 35-50% of sawtooth-shaped flat viscose fibers with the size of 5-20mm on a feeding port, feeding the viscose fibers into a throwing and cutting machine by a conveying mechanism, and throwing and cutting the viscose fibers into a plurality of cut states on the surface or side surfaces of the viscose fibers by the high-speed shearing action of a throwing knife to obtain deformed viscose fibers; (2) The deformed viscose fibers and the wood pulp are respectively sent into a condenser through a feed inlet, and after the condenser pumps out air from the raw material conveying process, the raw material falls freely to a mixer through the rotating condenser; (3) The mixer consists of three groups of material homogenizing rollers, wherein the middle part is separated into three sections of material homogenizing, the material falling into the mixer freely forms viscose fiber and wood pulp mixed material under the action of the mixer, and a water inlet arranged at the upper end of the mixer is filled with water, so that the material in the mixer forms fully and uniformly working slurry; (4) The fully uniform working slurry flows into the forming port, the negative pressure generated by the non-woven fabric forming supporting net and the suction box acts together, water is pumped away, and the fiber raw material is remained in the supporting net, so that a formed fiber net structure is generated; (5) The fiber net is driven by the supporting net to be input into the micro-needle water needling area, and the fibers are mutually entangled under the action of the micro-needle water needling head to continuously form the sheet-shaped non-woven fabric. The adoption of the wet-process net-laying mode has the problems of high water consumption, high electricity consumption and the like; the formed web can have the problems of slurry lumps, caking, foreign matters, impurities and the like which cannot be removed, and defects such as the web. In addition, wood pulp and viscose or tencel fiber are uniformly mixed in the pulp, so that the pulp is uniformly distributed on the cloth cover, the situation of falling wool and scraps of the water jet cloth which can be scattered is generally serious, and most of falling wool scraps are wood pulp fiber.
Disclosure of Invention
Aiming at the technical problems that water and electricity consumption for wet-process web formation are large, slurry blocks and impurities are easy to come out of a fiber web, and water thorn cloth which can be washed away easily falls off, the invention provides a production process of water thorn cloth which can be washed away and a web forming device thereof.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
A flushable spunlaced fabric web forming device comprises at least one web forming device and at least one group of transferring devices, fibers are paved on the web forming device to form a fiber web, and the fiber web is transported to a next process through the transferring devices;
the lapping device comprises a hopper, a filter screen and a lapping suction device, wherein the hopper is used for storing fibers, an opening is formed in the upper portion of the hopper, a stirring device is arranged in the hopper, the lapping suction device is arranged above the opening of the hopper, at least one section of the filter screen is arranged between the hopper and the lapping suction device, the lapping suction device can provide suction, fibers positioned at the top in the hopper are sucked by the lapping suction device on the other side of the filter screen, and a fiber net is formed on one side, close to the hopper, of the filter screen by being bound.
The transfer device is arranged on the same side as the hopper and comprises a net for net rotation and a net rotation suction device, wherein at least one section of net for net rotation is arranged above the net rotation suction device, and the height of the net rotation is lower than that of the filter screen; the web-turning suction device is capable of providing suction, and the web is bound to the length of the web-turning wire by the web-turning suction device providing suction.
The filter screen surrounds the lapping suction device and is tightened through at least three roll shafts; at least one of the roll shafts is a driving shaft, the other roll shafts are driven shafts, and the driving shaft drives the filter screen to move, so that the filter screen can circularly move around the lapping suction device.
The filter screen is tightened through three roll shafts, the three roll shafts are distributed in a triangular structure, one of the roll shafts is a driving shaft, the other two are driven shafts, and the lapping suction device is arranged in the triangular structure.
The filter screen is tightened through four roll shafts, the four roll shafts are distributed in a quadrilateral structure, one of the four roll shafts is a driving shaft, the other three are driven shafts, and the lapping suction device is arranged in the quadrilateral structure.
The net for net rotation surrounds the net rotation suction device and tightens the net for net rotation through at least three roll shafts; at least one of the roll shafts is a driving shaft, the other roll shafts are driven shafts, and the driving shaft drives the net for net rotation to move, so that the net for net rotation can circularly move around the net rotation suction device.
The stirring device is a stirring rod.
A certain distance is reserved between the adjacent lapping suction device and the rotating net suction device; there is a region of overlap between the screen and the screen for the turning wire that is maintained against the web shape Cheng Jia.
The device comprises three net forming devices and three transferring devices, wherein the three net forming devices and the three transferring devices are alternately arranged, and one net forming device is a first procedure; the three net forming devices are a first net forming device, a second net forming device and a third net forming device respectively; the three groups of transfer devices are a first transfer device, a second transfer device and a third transfer device respectively.
The production process of the flushable spunlaced fabric sequentially comprises a net forming process, a spunlaced reinforcing process and a drying forming process, wherein the net forming process adopts the net forming device and comprises the following steps of: adding chopped fibers into the hoppers of the first and third web forming devices, and adding wood pulp fibers into the hoppers of the second web forming device; laying a layer of chopped fiber web in a first web forming device, then conveying the chopped fiber web to a second web forming device through a first transfer device, and laying a layer of wood pulp fiber web on the chopped fiber web again; finally, the fiber is conveyed to a third net forming device through a second transferring device, a layer of chopped fiber net is paved on the wood pulp fiber net to form a net with a three-layer cored structure, and the net is conveyed to a hydro-entangled reinforcement process through the third transferring device.
The invention has the beneficial effects that: the fiber in the hopper is uniformly distributed in the hopper after being stirred by the stirring rod, the fiber in the hopper is adsorbed by the vacuum suction device at the rear of the filter screen above the hopper to form the fiber net, and non-fibrous impurities are not adsorbed due to different densities and sink to the bottom of the hopper in the process. The web may be laid by turning the web to lay different fibers between different layers. According to the method, impurity and foreign matters in the fibers are separated before the fiber is formed, so that the defect quality of the water-jet cloth capable of being punched and scattered is improved, and the problem of high impurity and foreign matters removing cost in raw materials is solved. Compared with wet-process lapping, multi-layer lapping can be performed, and uneven lapping and lapping which cannot be performed due to overlarge difference of fiber length can be avoided. The net-forming of the invention is not repulped, solves the problem of water cost, solves the environmental problem caused by using a large amount of underground water, and prevents the excessive exploitation of the underground water. The invention changes the fiber laying mode by removing the attached carrier when the fiber moves before laying, and can naturally screen the matters which can cause cloth defects, such as pulp blocks, caking, foreign matters, impurities, and the like, according to the principle of laying in the process of laying, thereby solving the quality problem of cloth defects. In addition, through the three net devices of facility, but the water thorn cloth that can dash out of three-layer cored structure has been prepared, but the viscose fiber or the tencel that dash out in the water thorn cloth length, tangle closely lie in upper and lower two-layer, bind the wood pulp fiber that length is shorter in the intermediate level, avoid the drop of wood pulp fiber, effectively solved the problem of falling the hair.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a filter screen.
Fig. 3 is a schematic view of another structure of the filter screen.
Fig. 4 is a schematic diagram of the structure of a net for turning.
Fig. 5 is a schematic view of still another structure of the net for turning net.
In the figure, 1, a filter screen; 2. a hopper; 21. a stirring device; 3. a lapping suction device; 4. a transfer device; 41. a rotary screen suction device; 42. a net is used for net turning; 5. a web; 6. a driving shaft; 7. and a driven shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
Example 1
A flushable spunlaced fabric web forming device, as shown in figure 1, comprising at least one web forming device and at least one group of transferring devices 4, wherein fibers are laid on the web forming device to form a fiber web 5, and the fiber web is transported to a next process through the transferring devices 4; each net forming device can be paved with a layer of fiber net 5, a plurality of groups of transferring devices 4 are arranged to carry out multi-layer net paving, and the preparation of multi-layer water thorn cloth with different performances and capable of being punched and scattered can be realized by adjusting net forming raw materials in each net forming device. The transfer device 4 is mainly used for transferring the web 5 prepared on the web forming device, and when a multi-component web device is included, is also used for transferring the web 5 between two adjacent component web devices.
The device comprises a hopper 2, a filter screen 1 and a lapping suction device 3, wherein the hopper 2 is used for storing fibers, and the fibers are in a discrete dry state. The hopper 2 is opened at the upper part and is internally provided with a stirring device 21. The stirring device 21 can continuously keep the fibers in a motion state, stir the input discrete fibers, relatively uniformly distribute the fibers in the hopper 2, randomly tumble the fibers in the hopper 2 and simultaneously be in a free falling state. The lapping suction device 3 is arranged above the opening of the hopper 2, at least one section of the filter screen 1 is arranged between the hopper 2 and the lapping suction device 3, and other positions of the filter screen 1 can exceed the lapping suction device 3. The lapping suction device 3 can provide suction, and fibers positioned at the top in the hopper 2 are sucked by the lapping suction device 3 on the other side of the filter screen 1, and the fibers are bound on the side, close to the hopper 2, of the filter screen 1 to form a fiber net 5. Because the impurity and the foreign matter have larger density, the impurity and the foreign matter are not easy to be adsorbed by the filter screen 1, and the impurity and the foreign matter in the fiber web 5 can be reduced. To ensure continuity of the laying, the screen 1 can be moved so that the web 5 is continuously produced, and can be continuously fed into the hopper 2 according to the amount of loss during the laying.
Principle of operation of the web forming device: after the fibers in the hopper 2 are stirred by the stirring device 21, the fibers are uniformly distributed in the hopper 2, the fibers in the hopper 2 are adsorbed by the suction device behind the filter screen 1 above the hopper 2 to form a fiber net 5, and non-fibrous impurities are not easy to adsorb due to the fact that the density of the non-fibrous impurities is generally larger than that of the fibers in the process, and the non-fibrous impurities sink to the bottom of the hopper 2.
Example 2
A flushable spunlaced fabric forming device comprises at least one forming device and at least one group of transferring devices 4, fibers are laid on the forming device to form a fiber web 5, and the fiber web is transported to a next process through the transferring devices 4;
The lapping device comprises a hopper 2, a filter screen 1 and a lapping suction device 3, wherein the hopper 2 is used for storing fibers, an opening is formed in the upper side of the hopper 2, a stirring device 21 is arranged in the lapping suction device 3, the lapping suction device 3 is arranged above the opening of the hopper 2, at least one section of the filter screen 1 is arranged between the hopper 2 and the lapping suction device 3, the lapping suction device 3 can provide suction, fibers positioned at the top in the hopper 2 are sucked by the lapping suction device 3 positioned on the other side of the filter screen 1, and a fiber net 5 is formed on one side, close to the hopper 2, of the filter screen 1 in a binding manner.
In particular, the transfer device 4 is arranged on the same side as the hopper 2, below the web 5. The transfer device 4 comprises a net 42 for rotating the net and a net suction device 41, wherein at least one section of the net 42 for rotating the net is arranged above the net suction device 41 and is lower than the filter screen 1. Because the web 5 is adsorbed on the lower surface of the screen 1, the net 42 for rotation is used for receiving the web 5 detached from the screen 1 when the web 5 moves with the screen 1 beyond the suction range of the net-laying suction device 3; the web 5 is held to the length of the transfer wire 42 by suction provided by the transfer suction device 41, and the suction provided by the transfer suction device 41. Suction in the web suction device 41 may be provided by a vacuum pump and other devices capable of providing suction may be used in the present application. The web 5 produced from the web-forming device is in a loose state and is ensured not to be lost and deformed during the web-turning by the web-turning suction device 41.
The filter screen 1 surrounds the lapping suction device 3, and the filter screen 1 is stretched and flattened through at least three roll shafts; the arrangement of at least three rolls ensures that the screen 1 between two of the rolls is between the hopper 2 and the screening suction means 3. At least one of the roll shafts is a driving shaft 6, the other is a driven shaft 7, and the driving shaft 6 can be connected with a motor for regulating and controlling the speed, such as a servo motor. The driving shaft 6 drives the filter screen 1 to move, so that the filter screen 1 can circularly move around the lapping suction device 3.
Specifically, as shown in fig. 2, the filter screen 1 is stretched by three roll shafts, the three roll shafts are distributed in a triangular structure, one of the roll shafts is a driving shaft 6, the other two are driven shafts 7, and the lapping suction device 3 is arranged in the triangular structure. In other embodiments, as shown in fig. 3, the filter screen 1 is stretched by four rollers, which are distributed in a quadrilateral structure, wherein one is a driving shaft 6, and the other three are driven shafts 7, and the lapping suction device 3 is arranged in the quadrilateral structure.
The net 42 for net rotation circulates around the net suction device 41, and the net 42 for net rotation is tightened by at least three roll shafts; at least one of the roll shafts is a driving shaft 6, the other roll shafts are driven shafts 7, and the driving shaft 6 drives the net 42 for net rotation to move, so that the net 42 for net rotation can circularly move around the net rotation suction device 41. The net 42 for rotating the net and the filter screen 1 can be in a triangular structure or a quadrilateral structure, as shown in fig. 4 and 5, the form is not limited, the driving shaft 6 drives the net 42 for rotating the net to rotate along the machine direction, and the driven shaft 7 ensures that the net 42 for rotating the net can be straightened and flattened in the suction stage of the filter screen 1, and the net forming structure is not influenced.
In addition, the driven shaft 7 can horizontally move in the MD direction (machine production direction) of the fiber web 5, so as to stretch the filter screen 1 or the screen 42 for screen rotation in a straight manner; while a movement perpendicular to the plane of the web 5 is possible in order to adjust the distance between the web 5 and the screen 1 (the distance between the clamping of the web 5).
The upper and lower covering areas of the adjacent lapping suction devices 3 and the rotating net suction device 41 are not overlapped, a certain distance is arranged between the upper and lower covering areas, a certain overlapping area exists between the filter screen 1 and the rotating net 42, the overlapping distance can be adjusted when the fiber net 5 is shipped, and the fiber net 5 is tightly attached to the filter screen 1 and the rotating net 42 when the fiber net 5 is clamped in the clamping area according to the quantitative determination of the produced cloth. The porous mesh structure of the screen 1 and the screen 42 is not limited, and may be, for example, polyester, fiber, or the like.
The stirring mode of the stirring device 21 is not limited, and the fiber can be kept in a motion state; for example, the stirring device 21 is a stirring rod. The shape of the stirring rod is not limited, and the stirring rod can uniformly scatter the fibers in the hopper 2, and the stirring rod continuously stirs and disperses the fibers in the hopper 2 continuously in a flying way.
Example 3
The device comprises three net forming devices and three transferring devices 4, wherein the three net forming devices and the three transferring devices 4 are alternately arranged, and one net forming device is a first procedure; the three net forming devices are a first net forming device, a second net forming device and a third net forming device respectively; the three groups of transfer devices 4 are a first transfer device, a second transfer device and a third transfer device respectively. The lapping device comprises a hopper 2, a filter screen 1 and a lapping suction device 3, wherein the hopper 2 is used for storing fibers, an opening is formed in the upper side of the hopper 2, a stirring device 21 is arranged in the lapping suction device 3, the lapping suction device 3 is arranged above the opening of the hopper 2, at least one section of the filter screen 1 is arranged between the hopper 2 and the lapping suction device 3, the lapping suction device 3 can provide suction, fibers positioned at the top in the hopper 2 are sucked by the lapping suction device 3 positioned on the other side of the filter screen 1, and a fiber net5 is formed on one side, close to the hopper 2, of the filter screen 1 in a binding manner.
The transfer device 4 is arranged on the same side as the hopper 2, comprises a net 42 for net rotation and a net rotation suction device 41, and at least one section of the net 42 for net rotation is arranged above the net rotation suction device 41 and is lower than the filter screen 1; the web 5 is held to the length of the transfer wire 42 by suction provided by the transfer suction device 41, and the suction provided by the transfer suction device 41. The filter screen 1 surrounds the lapping suction device 3, and the filter screen 1 is tensioned through at least three roll shafts; at least one of the roll shafts is a driving shaft 6, the other roll shafts are driven shafts 7, and the driving shaft 6 drives the filter screen 1 to move, so that the filter screen 1 can circularly move around the lapping suction device 3. The filter screen 1 is tightened through three roll shafts, the three roll shafts are distributed in a triangular structure, one of the roll shafts is a driving shaft 6, the other two are driven shafts 7, and the lapping suction device 3 is arranged in the triangular structure. The filter screen 1 is tightened through four roll shafts, the four roll shafts are distributed in a quadrilateral structure, one of the four roll shafts is a driving shaft 6, the other three are driven shafts 7, and the lapping suction device 3 is arranged in the quadrilateral structure. The net 42 for net rotation circulates around the net suction device 41 and tightens the filter net 1 by at least three rollers; at least one of the roll shafts is a driving shaft 6, the other roll shafts are driven shafts 7, and the driving shaft 6 drives the filter screen 1 to move, so that the net 42 for net rotation can circularly move around the net rotation suction device 41. The stirring device 21 is a stirring rod. A certain distance is arranged between the adjacent lapping suction device 3 and the rotating mesh suction device 41; there is a certain overlap area between the screen 1 and the turning wire 42, which area forms a hold on the web 5.
Example 4
The production process of the flushable spunlaced fabric sequentially comprises a net forming process, a spunlaced reinforcing process and a drying forming process, wherein the net forming process adopts the net forming device in the embodiment 3 and comprises the following steps of: adding chopped fibers into the hoppers of the first and third web forming devices, and adding wood pulp fibers into the hoppers of the second web forming device; laying a layer of chopped fiber web in a first web forming device, then conveying the chopped fiber web to a second web forming device through a first transfer device, and laying a layer of wood pulp fiber web on the chopped fiber web again; finally, the fiber is conveyed to a third net forming device through a second transferring device, a layer of chopped fiber net is paved on the wood pulp fiber net to form a net with a three-layer cored structure, and the net is conveyed to a hydro-entangled reinforcement process through the third transferring device.
The chopped fibers are regenerated fibers or synthetic fibers, the regenerated fibers are viscose fibers or tencel, and the synthetic fibers are terylene, chinlon, acrylon, chlorfiber, vinylon or spandex. The wood pulp fiber is needle wood pulp fiber or hardwood pulp fiber. The length of the chopped fiber is 6-12mm; the length of the wood pulp fiber is 1-5mm. The fibers are dry discrete fibers, the number of single wood pulp fibers is more than or equal to 95%, and the number of single viscose and tencel fibers is more than or equal to 98%.
Specifically, the interlaminar assembly in the production of high basis weight (> 60g/m 2) webs comprises the steps of:
S1, the material used for a hopper in a first net forming device is ultra-short fiber, the length can be between 6 and 12mm, and the laid fiber net ration can be between 15 and 60g/m 2;
S2, the hopper in the second net forming device is made of softwood pulp fiber, the length is about 2.5mm, and the laid fiber net can have a ration of 30-120g/m 2;
S2, the material used for the hopper in the third net forming device is ultra-short fiber, the length can be between 6 and 12mm, and the laid fiber net ration can be between 15 and 80g/m 2.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The flushable spunlaced fabric web-forming device is characterized by comprising at least one web-forming device and at least one group of transferring devices (4), wherein fibers are paved on the web-forming device to form a fiber web (5), and the fiber web is transported to a next process through the transferring devices (4);
The lapping device comprises a hopper (2), a filter screen (1) and a lapping suction device (3), wherein the hopper (2) is used for storing fibers, a stirring device (21) is arranged in the opening of the upper portion of the hopper (2), the lapping suction device (3) is arranged above the opening of the hopper (2), at least one section of the filter screen (1) is arranged between the hopper (2) and the lapping suction device (3), the lapping suction device (3) can provide suction, fibers positioned at the top in the hopper (2) are sucked by the lapping suction device (3) positioned at the other side of the filter screen (1), and fiber webs (5) are formed on one side, close to the hopper (2), of the filter screen (1) in a binding mode.
2. The flushable spunlaced fabric web-forming device according to claim 1, characterized in that the transfer device (4) is arranged on the same side as the hopper (2) and comprises a web-turning net (42) and a web-turning suction device (41), wherein at least one section of the web-turning net (42) is arranged above the web-turning suction device (41) and is lower than the filter screen (1); the web rotating suction device (41) can provide suction force, and the web (5) is bound on the upper web rotating (42) through the web rotating suction device (41).
3. The flushable spunlaced fabric web-forming device according to claim 2, characterized in that the screen (1) surrounds the web-laying suction device (3) and the screen (1) is tensioned by at least three rollers; at least one of the roll shafts is a driving shaft (6), the other roll shafts are driven shafts (7), and the driving shaft (6) drives the filter screen (1) to move, so that the filter screen (1) can circularly move around the lapping suction device (3).
4. A flushable spunlaced fabric web-forming device according to claim 3, characterized in that the screen (1) is tensioned by three rollers which are distributed in a triangular configuration, one of which is a driving shaft (6) and the other two are driven shafts (7), the lapping suction device (3) being arranged in the triangular configuration.
5. A flushable spunlaced fabric web-forming device according to claim 3, characterized in that the screen (1) is stretched by four rollers which are distributed in a quadrangular structure, one of which is a driving shaft (6) and the other three are driven shafts (7), the lapping suction device (3) being arranged in the quadrangular structure.
6. The flushable hydroentangled web forming device according to claim 4 or 5, characterized in that the rotating web (42) surrounds the rotating web suction device (41) and tightens the rotating web (42) by means of at least three rolls; at least one of the roll shafts is a driving shaft (6), the other roll shafts are driven shafts (7), and the driving shaft (6) drives the net (42) for net rotation to move, so that the net (42) for net rotation can circularly move around the net rotation suction device (41).
7. The flushable spunlace web forming device of claim 6, wherein the agitating device (21) is an agitating roll.
8. The flushable spunlace web laying device of claim 7, wherein adjacent web laying suction devices (3) and web turning suction devices (41) are spaced apart by a distance; there is a certain overlap area between the screen (1) and the screen (42) for rotation, which area forms a hold for the web (5).
9. The flushable spunlaced fabric web forming device of claim 1, comprising three sets of web forming devices and three sets of transfer devices (4), the three sets of web forming devices and the three sets of transfer devices being alternately arranged, wherein one set of web forming devices is the first process; the three net forming devices are a first net forming device, a second net forming device and a third net forming device respectively; the three groups of transfer devices are a first transfer device, a second transfer device and a third transfer device respectively.
10. The production process of the flushable spunlaced fabric sequentially comprises a net forming process, a spunlaced reinforcing process and a drying forming process, and is characterized in that the net forming process adopts the net forming device of claim 9 and comprises the following steps: adding chopped fibers into the hoppers of the first and third web forming devices, and adding wood pulp fibers into the hoppers of the second web forming device; laying a layer of chopped fiber web in a first web forming device, then conveying the chopped fiber web to a second web forming device through a first transfer device, and laying a layer of wood pulp fiber web on the chopped fiber web again; finally, the fiber is conveyed to a third net forming device through a second transferring device, a layer of chopped fiber net is paved on the wood pulp fiber net to form a net with a three-layer cored structure, and the net is conveyed to a hydro-entangled reinforcement process through the third transferring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410499290.2A CN118186686A (en) | 2024-04-24 | 2024-04-24 | Production process of flushable spunlaced fabric and net forming device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410499290.2A CN118186686A (en) | 2024-04-24 | 2024-04-24 | Production process of flushable spunlaced fabric and net forming device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118186686A true CN118186686A (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410499290.2A Pending CN118186686A (en) | 2024-04-24 | 2024-04-24 | Production process of flushable spunlaced fabric and net forming device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118186686A (en) |
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2024
- 2024-04-24 CN CN202410499290.2A patent/CN118186686A/en active Pending
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