CN210309442U - Production device of disposable composite towel material - Google Patents

Abstract

The utility model discloses a production device for disposable composite towel materials. The manufacturing process of the production device is characterized in that an upper wet method fiber layer, a reinforcing material layer and a lower wet method fiber layer are synchronously overlapped and covered to form a composite fiber layer; then, the upper wet-process fiber layer and the lower wet-process fiber layer are respectively attached to the upper concave convex forming net and the lower concave convex forming net through the simultaneous action of the upper hydraulic power and the lower hydraulic power of a bidirectional spunlace-vacuum suction system, concave-convex grains are simultaneously formed on the upper surface and the lower surface of the composite fiber layer under the action of hydraulic impact, and meanwhile, water between the fiber layers is sucked away through a vacuum suction box to form a wet fiber composite layer with fibers of concave-convex surfaces combined with each other; and finally, drying by a drying device and winding by a winding device to obtain the composite towel material. The utility model discloses use two-way water thorn-vacuum suction system, water conservancy acts on the composite fiber layer simultaneously about through the system, has made the unsmooth shaping non-woven fabrics wiping material in disposable two sides.

Description

Production device of disposable composite towel material

Technical Field

The utility model belongs to non-woven material preparation field, concretely relates to apparatus for producing of disposable composite towel material.

Background

The existing device and process technology for wiping towel materials basically adopts the following steps:

the first method comprises the following steps: the water-absorbing chemical fiber and the natural cotton fiber are combed into a net, then the net is made into non-woven fabric with water absorption performance by needling, water making and glue spraying methods, and the non-woven fabric is cut according to the use requirement to be made into wiping cloths with different gram weights, shapes and sizes;

the second method comprises the following steps: preparing a wet fiber layer and chemical fibers by using a wet-laid device, carding, forming, spunlacing and entangling the wet fiber layer and the chemical fibers, superposing the two layers of fibers together, combining the two layers of fibers by using a spunlacing method to prepare a composite non-woven fabric with certain water absorption capacity, and dividing the composite non-woven fabric into wiping towels with different specifications according to different use requirements;

the third method comprises the following steps: the spun-bonded non-woven fabric and the fiber layer formed by wet-laid web are bonded together, the spun-bonded non-woven fabric and the fiber layer formed by wet-laid web are combined with each other by a water-jet method to form a composite non-woven fabric with small deformation and good strength, and the composite non-woven fabric is cut and folded to form various wiping cloths.

The wipes made by the above different methods are currently common nonwoven materials, but have the following problems:

first, in order to increase the frictional force of the nonwoven fabric, the method of impressing and punching the mesh holes is adopted to increase the base thickness and the frictional force, but the actual effect is not obvious, and the surface of the nonwoven fabric is still smooth. By adopting the indentation method, although the surface has obvious concave-convex feeling, the surface is recovered to be smooth after being wetted by water, and the production cost is increased by the process;

secondly, the pressed trace of the plant fiber in a dry state can be properly shaped to be made into materials with various concave-convex patterns. But after wetting in water, the deformed plant fibers can be immediately restored to the original state, so that the concave-convex feeling is lost;

thirdly, the non-woven fabric for wiping manufactured by the method only has one surface which is concave and convex, and the other surface is basically smooth, so that the two surfaces are obvious; when in use, only one surface has certain friction, which affects the use effect.

Disclosure of Invention

An object of the utility model is to solve the defect that the non-woven fabrics exists for current cleaning, if frictional force is not enough, meet the water and become level and smooth, the obvious scheduling problem of two sides to a apparatus for producing of disposable composite towel material and technology thereof are provided.

The utility model discloses the concrete technical scheme who takes as follows:

a production device for a disposable composite towel material comprises a first wet-process fiber conveying net, a reinforcing layer unreeling device, a second wet-process fiber conveying net, an upper concave-convex forming net, a lower concave-convex forming net, a drying device and a reeling device; the first wet-process fiber conveying net is used for conveying a first wet-process fiber layer obtained by wet forming; the reinforcing layer unreeling device is used for conveying a reinforcing material layer; the second wet-process fiber conveying net is used for conveying a second wet-process fiber layer obtained by wet forming; the first wet-process fiber conveying net, the reinforcing layer unreeling device and the second wet-process fiber conveying net are positioned at the front end above the lower concave-convex forming net and are sequentially arranged along the conveying direction of the lower concave-convex forming net, so that the first wet-process fiber layer, the reinforcing material layer and the second wet-process fiber layer can be sequentially superposed on the lower concave-convex forming net from bottom to top to form a composite fiber layer; the upper concave-convex forming net is positioned above the lower concave-convex forming net and is attached to the upper surface of the second wet-process fiber layer of the composite fiber layer; the upper concave-convex forming net and the lower concave-convex forming net are water-permeable forming nets with concave-convex lines; a two-way spunlace-vacuum suction system is arranged along the path of the overlapped part of the bearing surfaces of the upper concave-convex forming net and the lower concave-convex forming net, the two-way spunlace-vacuum suction system comprises a plurality of pairs of vacuum water suction boxes and spunlace devices, part of the spunlace devices are positioned above the upper concave-convex forming net, the spunlace direction is from top to bottom, part of the spunlace devices are positioned below the lower concave-convex forming net, and the spunlace direction is from bottom to top; the drying device is arranged behind the two-way spunlace-vacuum suction system and is used for drying the spunlaced composite fiber layer; and the winding device winds the dried composite fiber layer.

The main design points of the device of the utility model are that the composite fiber layer is acted simultaneously by the upper and lower water power of a two-way spunlace-vacuum suction system, so that the upper wet fiber layer and the lower wet fiber layer are respectively jointed with the upper forming net and the lower forming net, under the action of water power impact, the upper and lower surfaces of the composite fiber layer can simultaneously form concave-convex lines, in the process, partial water between the fiber layers is sucked away by a vacuum suction box, and a wet fiber composite layer with concave-convex fiber combined with each other is formed; and finally, drying and rolling the towel material by drying equipment to obtain the composite towel material. Compared with the prior wiping cloth material and the method in the background art, the concave-convex feeling and the friction force on the surface of the final finished product can be obviously increased, and the utility model discloses can once only realize that the two sides of the wiping cloth material are concave-convex shaped, consequently still improve production efficiency, reduce the processing and manufacturing cost.

Preferably, the method comprises the following steps: the wet former preferably uses an inclined wire former and a fourdrinier wire former.

Preferably, the first wet laid fibre transport web is connected at its leading end to the wet laid fibre layer output end of the outer first wet laid former.

Preferably, a turning roller is arranged at the bottom of the reinforcing layer unreeling device, close to the first wet-process fiber layer, and is used for enabling the reinforcing material layer to be attached to the first wet-process fiber layer.

Preferably, the second wet laid fibre transport web is connected at its leading end to the wet laid fibre layer output end of the outer second wet laid former.

Preferably, the upper concave-convex forming net and the lower concave-convex forming net are formed by weaving wires in a transversely-longitudinally staggered mode, the wire diameter of the weaving wires is 0.3-0.9 mm, and the wire density is 4-18 pieces/cm. Of course, the specification and shape of the mesh and the thickness of the mesh line can be adjusted according to actual needs, so as to form the required concave-convex lines on the two sides of the surface of the wet fiber composite layer.

Preferably, the upper concave-convex forming net and the lower concave-convex forming net are metal nets or plastic nets.

Preferably, the two-way spunlace-vacuum suction system comprises 3-12 sets of vacuum suction boxes and spunlace devices.

Preferably, the vacuum suction box is a single-slit suction box or a multi-slit suction box.

Preferably, the drying devices are 10-50 drying cylinders which are arranged in a vertically staggered manner along the process, and the composite fiber layer output from the rear part of the bidirectional spunlace-vacuum suction system sequentially bypasses the surfaces of the upper and lower drying cylinders.

Preferably, in the bidirectional spunlace-vacuum suction system, the spunlace direction of two adjacent spunlace devices is different.

Preferably, the spunlace devices correspond to the vacuum suction boxes one by one and are arranged on the upper side and the lower side of the upper concave-convex forming net and the lower concave-convex forming net, and the spunlace direction of the spunlace devices is perpendicular to the composite fiber layer.

The utility model discloses in, go up wet process fibre and carry the net, wet process fibre carries the net down, goes up the forming net, the concrete material of forming net down, model can carry out nimble selection according to the material that its needs were carried and the operating mode environment that locates.

The utility model discloses improved to traditional combined material apparatus for producing, used two-way water thorn-vacuum suction system, carried out the water thorn simultaneously to the upper and lower surface on composite fiber layer, when making the multilayer material in the composite fiber layer tangle, upper and lower two sides wet process fibrous layer homoenergetic is suppressed out unsmooth line by unsmooth forming screen. Through the production device, the composite non-woven fabric material with concave-convex grains on two sides can be prepared at one time without an additional pressing process. The composite material has better strength and rough grains, can be used as a disposable environment-friendly composite towel material, and has the advantages of low cost and simple process.

Drawings

FIG. 1 is a schematic structural diagram of a production device for composite towel material;

FIG. 2 is an enlarged schematic view of the bi-directional hydroentangling-vacuum pumping system of FIG. 1;

FIG. 3 is a schematic plan view of one configuration of upper and lower convex forming wires;

FIG. 4 is a schematic cross-sectional view of one configuration of an upper and lower concave-convex forming wire;

FIG. 5 is a schematic view of two material structures of a wet fiber composite layer;

the utility model discloses the reference numeral is as follows:

1-first Wet-laid fiber layer 2-first Wet-laid fiber transfer Web

3-reinforcing material layer 4-reinforcing layer unreeling device

5-second Wet-laid fibrous layer 6-second Wet-laid fibrous transport Web

7-upper concave-convex forming net 8-lower concave-convex forming net

9-wet fiber composite layer 10-drying device

11-rolling device 12-vacuum suction box

13-hydroentangling device 14-composite fiber layer

15-composite towel material 16-two-way spunlace-vacuum suction system

17-deflecting roller 18-transverse braiding wire

19-longitudinal braided wire

Detailed Description

The invention will be further elucidated and described with reference to the drawings and embodiments. The utility model discloses in the technical characteristics of each embodiment under the prerequisite that does not conflict each other, all can carry out corresponding combination.

As shown in fig. 1 and 2, in order to provide a device for producing a composite towel material in a preferred embodiment of the present invention, the device includes a first wet fiber conveying net 2, a reinforcing layer unwinding device 4, a second wet fiber conveying net 6, an upper concave-convex forming net 7, a lower concave-convex forming net 8, a drying device 10, and a winding device 11. The first wet laid fibre transport web 2 is guided by a number of guide rolls and is guided in a circulating manner in its forward end to the output end of the wet laid fibre layer of the external first wet laid former for transporting the wet laid fibre layer 1 obtained by the wet laid formation. In actual use, a section of the first wet laid fiber transfer web 2 may be used directly as the forming web of the wet former and the wet laid fiber layer is then discharged from the forming zone. The reinforcing layer unwinding device 4 is an unwinding roller driven by an external motor and is used for conveying the reinforcing material layer 3. The reinforcing material layer 3 is arranged on the unreeling roller in a coiled mode and is gradually unreeled along with the unreeling roller and conveyed downwards. The second wet fibre transport web 6 is of a form similar to the first wet fibre transport web 2 and has a leading end connected to the wet fibre layer output end of the outer second wet former for transporting the wet-formed second wet fibre layer 5.

Because the utility model discloses a composite towel material is three-layer fiber structure, and both sides all have the wet process fibrous layer that is spunlaced out the concave-convex pattern, and the centre is tangled up through reinforced material layer 3. Therefore, the positions of the first wet method fiber conveying net 2, the reinforcing layer unreeling device 4 and the second wet method fiber conveying net 6 need to be arranged so as to form a three-layer fiber structure. In this embodiment, the first wet process fiber conveying net 2, the reinforcing layer unreeling device 4, and the second wet process fiber conveying net 6 are all located at the front end above the lower concave-convex forming net 8 and are sequentially arranged along the conveying direction of the lower concave-convex forming net 8, the first wet process fiber layer 1 conveyed by the first wet process fiber conveying net 2 is firstly transferred to the lower concave-convex forming net 8, and then the reinforcing material layer 3 conveyed by the reinforcing layer unreeling device 4 is transferred to the upper surface of the first wet process fiber layer 1. And the bottom of the reinforcing layer unreeling device 4 is provided with a turning roller 17 close to the first wet method fiber layer 1, so that the reinforcing material layer 3 is attached to the first wet method fiber layer 1. Finally, the second wet laid fibre layer 5 conveyed by the second wet laid fibre conveying web 6 is transferred to the upper surface of the reinforcing material layer 3. As a result, the first wet-process fiber layer 1, the reinforcing material layer 3, and the second wet-process fiber layer 5 can be stacked in this order from bottom to top on the lower uneven forming wire 8 to form the composite fiber layer 14. The conveying speeds of the first wet method fiber conveying net 2, the reinforcing layer unreeling device 4 and the second wet method fiber conveying net 6 should be kept consistent as much as possible.

After the three-layer composite fiber layer 14 is obtained, it is subjected to hydroentangling and embossing. Different from the traditional sectional process, the production device can carry out spunlace compounding and spunlace pattern forming at one time so as to save the working procedures. The specific method comprises the following steps:

an upper concave-convex forming net 7 is arranged above the lower concave-convex forming net 8, the upper concave-convex forming net 7 is guided by a guide roller to travel at the same speed with the lower concave-convex forming net 8, and a distance is reserved at the bottom of the upper concave-convex forming net in the traveling process to be attached to the upper surface of the second wet-process fiber layer 5 of the composite fiber layer 14. The upper concave-convex forming net 7 and the lower concave-convex forming net 8 are water-permeable forming nets with concave-convex lines, and can adopt metal nets or nylon nets.

The forming net has the function of pressing the surface of the upper and lower wet fiber layers with lines by using the lines of the forming net, besides supporting the fiber layers, and the pressing pressure is derived from the pressure of a water needle in the spunlace process. Therefore, the mesh specification and shape and the mesh line thickness of the upper concave-convex forming net 7 and the lower concave-convex forming net 8 can be adjusted according to actual needs, so as to form the required concave-convex lines on the two sides of the surface of the wet-process fiber layer. In this embodiment, as shown in figures 3 and 4, both the upper and lower male forming wires 7, 8 are knitted with knitting yarns, the transverse knitting yarns 18 and the longitudinal knitting yarns 19 are crosswise staggered, the holes of the surface thereof are permeable to water supplied to the needles, and the pressure of the needles acting on the knitting yarns allows the fibres to be patterned. The wire diameter of the braided wire is 0.3-0.9 mm, the linear density is 4-18 pieces/cm, and the functions of spunlace compounding and grain pressing can be well realized.

The carrying surfaces of the upper and lower concave-convex forming webs 7, 8 have an overlap, in which the lower surface of the composite fibre layer 14 rests under gravity on the lower concave-convex forming web 8 and the upper surface is engaged by the upper concave-convex forming web 7. The overlapped part is provided with a two-way spunlace-vacuum suction system 16 along the way, as shown in fig. 2, the two-way spunlace-vacuum suction system 16 comprises N sets of paired vacuum suction boxes 12 and spunlace devices 13, wherein N can be 3-12 and can be adjusted according to actual needs. In the N sets of vacuum suction boxes 12 and hydroentangling devices 13, a part of the hydroentangling devices 13 are located above the upper concave-convex forming wire 7, and the hydroentangling direction is from top to bottom, and a part of the hydroentangling devices 13 are located below the lower concave-convex forming wire 8, and the hydroentangling direction is from bottom to top. The vacuum suction boxes 12 correspond to the spunlace devices 13 one by one and are used for absorbing water generated in the spunlace process, and if the spunlace devices 13 are positioned above the upper concave-convex forming net 7, the vacuum suction boxes 12 are positioned below the lower concave-convex forming net 8; conversely, if the hydroentangling device 13 is located below the lower male forming wire 8, the suction box 12 is located above the upper male forming wire 7. The suction box 12 may be a single or multiple slot suction box. The hydroentangling direction of the hydroentangling device 13 is as perpendicular as possible to the composite fiber layer 14 to be hydroentangled. In consideration of the uniformity of the hydroentangling and pattern pressing, the hydroentangling directions of two adjacent hydroentangling devices 13 in the two-way hydroentangling-vacuum suction system 16 are different, i.e., the upper hydroentangling device 13 and the lower hydroentangling device 13 are alternately arranged.

After the composite fiber layer 14 is subjected to up-down staggered spunlace, part of fibers in the first wet-process fiber layer 1 and the second wet-process fiber layer 5 are embedded into the reinforcing material layer 3 to form a sandwich type firm composite structure, and the surfaces of the first wet-process fiber layer 1 and the second wet-process fiber layer 5 are pressed to form pattern lines. The different shapes of the selected upper and lower convex forming wires 7, 8 result in different pattern lines, see fig. 5, which shows two different pattern lines, respectively, wherein (a) and (b) are formed by pressing a circular cross-section and a rectangular cross-section of the knitting wire, respectively.

After the composite fiber layer 14 is subjected to the water-jet entangling process, the wet fiber composite layer 9 is formed, and it is dried because it has a large amount of moisture. The drying device 10 is disposed behind the bi-directional hydroentangling-vacuum suction system 16, and is used for drying the hydroentangled composite fiber layer 14. In this embodiment, the drying devices 10 are 10 to 50 drying cylinders, which are arranged in a staggered manner along the process, the wet fiber composite layer 9 output from the rear of the bidirectional spunlace-vacuum pumping system 16 sequentially bypasses the surfaces of the upper and lower drying cylinders, and a certain surrounding angle is formed between the wet fiber composite layer 9 and each drying cylinder. Of course, the drying apparatus 10 may be a single-drum drying room or a multi-drum drying room. After the drying process is finished, the wet fiber composite layer 9 is formed, the disposable environment-friendly composite towel material 15 with concave-convex patterns on the upper and lower surfaces is produced. The winding device 11 winds up the dried composite towel material 15. The winding device 11 adopts a winding roller, and the tail end of the composite towel material 15 can be wound on the roller.

It should be noted that in the above description, for convenience of description, the composite fiber layer 14 is named as the wet fiber composite layer 9 and the composite towel material 15 respectively at different process stages, but the names of the different process stages are different, and the composite fiber layer 14 is composed of three layers in nature.

The production process of the composite towel material based on the production device comprises the following specific steps: sequentially attaching and superposing the three materials of the first wet-process fiber layer 1, the reinforcing material layer 3 and the second wet-process fiber layer 5 to form a composite fiber layer 14, clamping the upper concave-convex forming net 7 and the lower concave-convex forming net 8 up and down, conveying the materials forwards, and then carrying out up and down staggered spunlacing by a spunlace device 13 of a bidirectional spunlace-vacuum suction system 16 simultaneously, so that the composite fiber layer 14 is entangled, the first wet-process fiber layer 1 and the second wet-process fiber layer 5 are respectively subjected to the pressure of the lower concave-convex forming net 8 and the upper concave-convex forming net 7, and concave-convex grains are pressed on the upper surface and the lower surface of the composite fiber layer 14 simultaneously; in the spunlace process, partial moisture between fiber layers is absorbed through the vacuum suction box 12; and drying the wet fiber composite layer 9 formed by the spunlace composite fiber layer 14 by a drying device 10, and then rolling by a rolling device 11 to obtain a coiled composite towel material 15.

In the process, the raw materials of the three layers of fibers can be selected according to actual needs. The fiber raw material of the first wet-process fiber layer 1 and the second wet-process fiber layer 5 is one or more of natural plant fiber (wood pulp fiber, bamboo pulp fiber, hemp pulp fiber, cotton pulp fiber, etc.) or chemical fiber (viscose fiber, tencel fiber, etc.), and the reinforcing material layer 3 is PLA spunbonded fabric, PP spunbonded fabric, ES hot-rolled fabric, spunlace nonwoven fabric, etc.

Preferably, the first wet-process fiber layer 1 and the second wet-process fiber layer 5 are manufactured by the following method: mixing and diluting one or more of natural plant fiber of 2-5mm or chemical fiber of 3-10mm with water to obtain 0.03-0.1% water solution, and dewatering with wet shaper to obtain 10-100g/m²The wet laid fiber layer of (1). The water-jet device 13 can use a high-pressure water-jet head with a pressure of 1-10 Mpa.

The specific implementation of the above device is shown below in conjunction with several embodiments.

Example 1

The method comprises the steps of selecting 15 g/square meter PLA spunbonded fabric and softwood pulp as raw materials, dispersing softwood pulp fibers by a hydropulper, pulping, adjusting the concentration to be 2%, storing, mixing and diluting the dispersed wood pulp fibers and water to be three ten-thousandth of the concentration by a metering pump, respectively conveying to a #1 and a #2 inclined wire former, dehydrating to form a wet fiber layer with 10% dryness, and then conveying by a first wet fiber conveying net 2 and a second wet fiber conveying net 6 at the bottom of the former respectively. With PLA spunbonded fabric book, put and unreel in the enhancement layer unwinding device 4 in the middle of #1, #2 oblique net former in step, three-layer fibrous layer from the bottom up successive layer stack forms sandwich fibrous layer: the upper layer is a 50 g/square meter wood pulp fiber layer, the middle layer is a 15 g/square meter PLA fiber layer, and the lower layer is a 50 g/square meter wood pulp fiber layer. Then, three layers of composite fiber layers are clamped between an upper concave-convex forming net 7 and a lower concave-convex forming net 8, the wood pulp fiber layers of the upper layer and the lower layer are combined with a PLA fiber layer of the middle layer through 5-8 water jet heads from top to bottom and 5-8 water jet heads from bottom to top respectively by using the pressure of a water needle of 3-10MPa, the fibers of the upper layer and the lower layer are respectively attached to the forming nets due to the action of the water force when the fiber layers are combined with each other, because the forming nets are concave-convex, concave-convex surfaces are left on the formed fiber layers under the impact of water power, water between the fiber layers is sucked by a vacuum suction box to form a wet fiber layer with 30% dryness and mutually combined fibers with concave-convex surfaces, and the wet fiber layer is dried by drying equipment, and the towel cloth raw material with the moisture content of about 4% of 120 g/square meter is formed by reeling. Then the disposable towels with various specifications and sizes are manufactured after being cut, folded and packaged.

Example 2

Selecting PP spunbonded fabric of 12 g/square meter and cotton pulp fiber raw materials, cutting and degreasing cotton fibers to prepare white cotton fiber slurry with the length of 2-3mm and the concentration of 1%, sending the cotton pulp raw materials to a high-level pulp preparation box by a pump, diluting the cotton pulp raw materials to the concentration of about three per thousand by using dilution water, and further diluting the cotton pulp raw materials into pulp and water mixture with the concentration of five ten thousandths by using white water. The slurry was pumped to a #1 fourdrinier wire forming apparatus and a #2 oblique wire forming apparatus by a fan pump, and water was removed from the slurry to prepare fiber layers having a 30% concentration and a grammage of 145 g, respectively, and then conveyed by a first wet fiber conveying web 2 and a second wet fiber conveying web 6 at the bottom of the former, respectively. Simultaneously put the PP coiled material and unreel on the enhancement layer unwinding device 4 in the middle of #1, #2 former, three-layer fibrous layer from the bottom up successive layer stack forms sandwich fibrous layer: the upper layer and the next time are both wet cotton fiber layers, and a PP spunbonded fabric layer is arranged in the middle. Then the three layers of composite fiber layers are clamped between an upper concave-convex forming net 7 and a lower concave-convex forming net 8, 6 water stabs with the pressure of 3-8MPa respectively are used on the upper surface, 5 water stabs with the pressure of 3-10MPa respectively are used on the lower surface, the fibers of the upper layer, the middle layer and the lower layer are respectively acted on the fiber layers, the upper layer, the middle layer and the lower layer are interwoven together to form a composite material with concave-convex shapes on the upper surface and the lower surface, a vacuum suction box is used for removing water to form wet towel cloth with the dryness of 40%, the wet towel cloth enters an oven with the temperature of 80-120 ℃ respectively and is further dried to form a material with the dryness of 95%, and the cotton surface layer towels with various specifications are prepared by coiling, slitting and folding.

Example 3

Selecting 25 g/square meter ES hot rolled cloth and 1.7d multiplied by 5mm viscose fiber raw materials:

firstly, diluting and dispersing the short-cut viscose fibers with water, wherein the concentration of the short-cut viscose fibers is 2 percent, storing the short-cut viscose fibers in a continuously stirred storage tank, conveying the short-cut viscose fibers to a pre-papermaking pool by using a metering pump, and simultaneously adding recycled white water to further dilute the short-cut viscose fibers into a mixture with three thousandth of concentration; then the mixed material is sent to a #1 and a #2 inclined wire former by a fan pump, white water is added at the same time, the concentration of the mixed material entering the inclined wire former is reduced to three ten-thousandths, the mixed material is dewatered by a 120-mesh forming wire to form a wet fiber net with the fiber content of 50 g/square meter and the dryness of 20 percent, and then the wet fiber net is respectively conveyed by a first wet fiber conveying net 2 and a second wet fiber conveying net 6 at the bottom of the former. Simultaneously, putting 25 g/square meter ES hot rolled cloth on a reinforcing layer unwinding device 4 in the middle of forming equipment #1 and #2 for synchronous unwinding, and superposing three fiber layers layer by layer from bottom to top to form a sandwich fiber layer: the upper layer and the next time are both wet viscose fiber layers, and ES hot-rolled cloth is arranged in the middle; the material with a three-layer structure is clamped between an upper concave-convex forming net 7 and a lower concave-convex forming net 8, 6 upward and 6 downward spunlace heads are selected, the pressure water is 3MPa-10MPa respectively, the aperture of a water needle plate is 0.01mm, and the hole spacing is 0.6mm, three layers of fibers are intertwined after spunlace, meanwhile, because the spunlace has a certain concave-convex pattern, the fibers are subjected to water pressure to form the concave-convex pattern in the spunlace process, then the fibers are pumped by a vacuum water suction box under the pressure of-3 MPa, the water content of the fibers is reduced to 30%, and the wet composite material leaving the spunlace net is dried, coiled and cut by six penetrating drying cylinders with the diameter of 2M to form the disposable towel with soft hand feeling.

Example 4

Selecting 25 g/square meter of viscose spunlace nonwoven fabric, wood pulp fiber and viscose fiber as raw materials, firstly dispersing the wood pulp fiber by a hydraulic pulper after adding water to prepare a slurry-water mixture with the concentration of 3%, and putting the mixture into a storage tank; then, 3mm viscose fiber is dispersed by water to be prepared into 2 percent mixture, and the mixture is put into a storage tank with upper and lower stirring. Respectively using two metering pumps to further dilute the wood pulp mixed solution into three thousandths of liquid, pumping the liquid into a #1 fourdrinier forming machine, spraying the liquid onto a forming net with vibration through a pulp spraying port, performing vacuum dehydration through a net part to form a wet fiber layer with the fiber content of 40 g/square meter, and then conveying the wet fiber layer by a first wet fiber conveying net 2; the viscose fiber mixed liquor is pumped into a #2 inclined wire former by a fan pump, simultaneously white water and the mixed liquor are mixed by a white water pump to form slurry-water mixed liquor with the concentration of two parts per million, the slurry-water mixed liquor is dewatered by a forming wire of the #2 inclined wire former to form a wet fiber layer with the fiber content of 55 g/square meter, and then the wet fiber layer is conveyed by a second wet fiber conveying wire 6. Simultaneously put into enhancement layer unwinding device 4 of the centre of #1 fourdrinier former and #2 oblique wire former with water thorn non-woven fabrics and unreel in step, three-layer fibrous layer from the bottom up successive layer stack forms sandwich fibrous layer: the lower layer is a wood pulp fiber layer, the middle layer is viscose spunlace non-woven fabric, and the upper layer is a viscose fiber layer. The three-layer superposed composite material is clamped between an upper concave-convex forming net 7 and a lower concave-convex forming net 8, so that the upper and lower forming nets tightly clamp the fiber layer, and simultaneously, 5 spunlaces with the pressure of 4MPa-8MPa and 8 spunlaces with the pressure of 2MPa-12MPa are respectively used from top to bottom, and after the three layers of materials are combined with each other through the upper and lower spunlace, and simultaneously, because the spunlace forming nets have concave-convex patterns, the two surfaces of the composite material also have corresponding concave-convex patterns, and then the composite material is dehydrated through a vacuum water absorption box, and then is dried, rolled, cut, folded to prepare the disposable towel with two surfaces of different materials and different hand feelings.

The above-mentioned embodiments are merely a preferred embodiment of the present invention, but it is not intended to limit the present invention. Various changes and modifications can be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the mode of equivalent replacement or equivalent transformation fall within the protection scope of the utility model.

Claims (10)

1. A production device of a disposable composite towel material is characterized by comprising a first wet-process fiber conveying net (2), a reinforcing layer unreeling device (4), a second wet-process fiber conveying net (6), an upper concave-convex forming net (7), a lower concave-convex forming net (8), a drying device (10) and a reeling device (11); the first wet-process fiber conveying net (2) is used for conveying a first wet-process fiber layer (1) obtained by wet forming; the reinforcing layer unreeling device (4) is used for conveying a reinforcing material layer (3); the second wet-method fiber conveying net (6) is used for conveying a second wet-method fiber layer (5) obtained by wet forming; the first wet-process fiber conveying net (2), the reinforcing layer unreeling device (4) and the second wet-process fiber conveying net (6) are positioned at the front end above the concave-convex forming net (8) and are sequentially arranged along the conveying direction of the concave-convex forming net (8), so that the first wet-process fiber layer (1), the reinforcing material layer (3) and the second wet-process fiber layer (5) can be sequentially overlapped on the lower concave-convex forming net (8) from bottom to top to form a composite fiber layer (14); the upper concave-convex forming net (7) is positioned above the lower concave-convex forming net (8) and is attached to the upper surface of the second wet-process fiber layer (5) of the composite fiber layer (14); the upper concave-convex forming net (7) and the lower concave-convex forming net (8) are water-permeable forming nets with concave-convex lines; a two-way spunlace-vacuum suction system (16) is arranged along the path of the overlapped part of the bearing surfaces of the upper concave-convex forming net (7) and the lower concave-convex forming net (8), the two-way spunlace-vacuum suction system (16) comprises a plurality of pairs of vacuum suction boxes (12) and spunlace devices (13), part of the spunlace devices (13) are positioned above the upper concave-convex forming net (7), the spunlace direction is from top to bottom, part of the spunlace devices (13) are positioned below the lower concave-convex forming net (8), and the spunlace direction is from bottom to top; the drying device (10) is arranged behind the two-way spunlace-vacuum suction system (16) and is used for drying the spunlaced composite fiber layer (14); and the winding device (11) winds the dried composite fiber layer (14).

2. Device for the production of disposable composite towel material according to claim 1, characterized in that the first wet laid fibre transport web (2) is connected at its leading end to the wet laid fibre layer output end of the outer first wet laid former.

3. The apparatus for producing disposable composite towel material according to claim 1, characterized in that a turning roll (17) is arranged at the bottom of the reinforcing layer unwinding device (4) near the first wet process fiber layer (1) for attaching the reinforcing material layer (3) to the first wet process fiber layer (1).

4. Device for the production of disposable composite towel material according to claim 1, characterized in that the second wet laid fibre transport web (6) is connected at its leading end to the wet laid fibre layer output end of an external second wet laid former.

5. The apparatus for producing a disposable composite towel material according to claim 1, wherein the upper concave-convex forming net (7) and the lower concave-convex forming net (8) are formed by weaving crosswise and criss-cross knitting of knitting yarns, the diameter of the knitting yarns is 0.3-0.9 mm, and the linear density is 4-18 yarns/cm.

6. The apparatus for producing disposable composite towel material according to claim 5, wherein the upper concave-convex forming net (7) and the lower concave-convex forming net (8) are metal nets or plastic nets.

7. The apparatus for producing disposable composite towel material according to claim 1, wherein the bi-directional hydroentangling-vacuum suction system (16) comprises 3-12 sets of vacuum suction boxes (12) and hydroentangling devices (13).

8. The apparatus for producing disposable composite towel material according to claim 7, characterized in that the vacuum suction box (12) is a single-slit or multi-slit suction box.

9. The apparatus for producing disposable composite towel material according to claim 1, wherein the drying device (10) comprises 10-50 drying cylinders, which are arranged up and down alternately along the process, and the composite fiber layer (14) output from the back of the bidirectional hydro-entangled-vacuum suction system (16) sequentially bypasses the surfaces of the upper and lower drying cylinders.

10. The apparatus for producing disposable composite towel material according to claim 1, characterized in that the two-way hydroentangling-vacuum suction system (16) has different hydroentangling directions for two adjacent hydroentangling devices (13).

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