Energy-saving production device and process for flushable wet-laid spunlaced nonwoven fabrics

Abstract

The present invention discloses an energy-saving production device and process for a flushable wet-laid spunlaced nonwoven fabric. The energy-saving production device for a flushable wet-laid spunlaced nonwoven fabric comprises a first wet-laid web-forming mechanism, a first transmission network, a first spunlaced mechanism, a second wet-laid web-forming mechanism, a second transmission network, a second spunlaced mechanism and a reel-out rack. The reel-out rack is provided with a plurality of reel-out disks at intervals. The first wet-laid web-forming mechanism is provided below the reel-out rack, the first spunlaced mechanism is provided in front of the first wet-laid web-forming mechanism and the reel-out rack, the first transmission network is provided between the first wet-laid web-forming mechanism and the first spunlaced mechanism, the second spunlaced mechanism is provided in front of the first spunlaced mechanism, the second wet-laid web-forming mechanism is provided above the second spunlaced mechanism, and the second transmission network is provided between the second wet-laid web-forming mechanism and the second spunlaced mechanism. The first fiber web and the second fiber web are compounded on the bottom and top surfaces of the mesh strips, so that the connection of a plurality of parallel mesh strips can be achieved and the strips can be quickly dispersed when flushing.

Description

Technical Field

[0001] The invention relates to the field of nonwoven fabrics, and in particular to an energy-saving production device and process for flushable wet-laid spunlaced nonwoven fabrics. Background Art

[0002] With the popularity of disposable non-woven products, the problem of non-woven fabrics polluting the environment has gradually attracted people's attention, and more and more non-woven fabrics use degradable fibers as raw materials.

[0003] In addition, in order to further improve the convenience of use, some disposable non-woven fabrics adopt a flushable design. After use, they can be thrown into the toilet and dispersed by the impact of water flow to avoid clogging of the toilet and facilitate subsequent decomposition.

[0004] In the prior art, in order to improve the flushability, the thickness of disposable non-woven fabrics is usually thin, the tensile strength is low, and they are easily broken due to stress during winding and unwinding and use. In order to improve the structural strength, hydrosol can be sprayed, but the cost is high, or a large amount of soluble fiber is used as raw material, which is not conducive to energy conservation and emission reduction.

[0005] In addition, in the traditional production process of spunlace non-woven fabrics, some fibers are easily detached by the impact of water flow, which requires an increase in the amount of fiber raw materials used, increasing energy consumption and costs. Summary of the invention

[0006] The object of the present invention is to provide an energy-saving production device and process for flushable wet-laid spunlaced nonwoven fabrics, thereby ensuring the flushability effect and reducing energy consumption and costs.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A device for energy-saving production of disintegrable wet-laid spunlaced nonwoven fabrics, comprising: a first wet-laid web-forming mechanism, a first transmission net, a first spunlaced mechanism, a second wet-laid web-forming mechanism, a second transmission net, a second spunlaced mechanism and a reel-out rack, wherein the reel-out rack is provided with a plurality of reel-out disks at intervals for simultaneously unwinding a plurality of mesh strips in parallel, the first wet-laid web-forming mechanism being arranged below the reel-out rack, the first spunlaced mechanism being arranged in front of the first wet-laid web-forming mechanism and the reel-out rack, the first transmission net being arranged between the first wet-laid web-forming mechanism and the first spunlaced mechanism, the second spunlaced mechanism being arranged in front of the first spunlaced mechanism, the second wet-laid web-forming mechanism being arranged above the second spunlaced mechanism, and the second transmission net being arranged between the second wet-laid web-forming mechanism and the second spunlaced mechanism.

[0009] Wherein, a dryer is arranged in front of the second water spurting mechanism.

[0010] Wherein, a first pressing roller assembly is arranged behind the first entanglement mechanism, and a second pressing roller assembly is arranged between the first entanglement mechanism and the second entanglement mechanism.

[0011] Wherein, the first transmission network passes through a first pressure roller assembly, and the second transmission network passes through a second pressure roller assembly.

[0012] Wherein, the mesh strips are made of degradable fiber mesh strips.

[0013] Wherein, the width of the mesh strip does not exceed 2 cm.

[0014] To achieve this object, the present invention adopts the following another technical solution:

[0015] A nonwoven fabric production process, using the above-mentioned flushable wet spunlace nonwoven fabric energy-saving production device, comprises the following steps:

[0016] Several unwinding discs are arranged in parallel on the unwinding rack, and multiple mesh strips that are in contact with each other but not fixed are unwound at the same time to form a base fabric of a certain width;

[0017] Mixing one or more plant fibers with water to obtain a mixture, dehydrating the mixture using a first wet-laid web-forming mechanism, and forming a first fiber web on a first transmission net;

[0018] The first fiber web is pressed on the bottom surface of the base fabric by a first pressing roller assembly to obtain a first composite material. When the first composite material passes above the first spunlace mechanism, the first spunlace is performed to strengthen the bonding between the first fiber web and the base fabric.

[0019] Dehydrating the mixture by a second wet-laid web-forming mechanism and forming a second fiber web on a second transmission net, and compounding the second fiber web on the top surface of the first composite by a second pressing roller assembly to obtain a second composite;

[0020] When the second composite material passes under the second spunlace mechanism, the composite material is spunlace-entrained for the second time to strengthen the combination of the second fiber web, the base fabric and the first fiber web, thereby obtaining a composite nonwoven fabric;

[0021] The composite nonwoven fabric is sent into a dryer for dehydration and hot air drying;

[0022] The dried composite nonwoven fabric is cut into sections to obtain sheet-shaped disintegratable wet-laid spunlaced nonwoven fabric, and the disintegratable wet-laid spunlaced nonwoven fabric is stacked and packaged.

[0023] The beneficial effects of the present invention include: an energy-saving production device and process for a flushable wet-process spunlace nonwoven fabric, in which a first fiber web and a second fiber web are compounded on the bottom and top surfaces of a mesh strip, which can not only realize the connection of multiple parallel mesh strips, but also can be quickly dispersed when flushed with water, thereby ensuring a flushable effect. The design of the mesh strip makes the first fiber web and the second fiber web more tightly combined with the mesh strip during the spunlace process, thereby reducing the problem of separation of plant fibers in the first fiber web and the second fiber web, having good tensile effect, simple process, and reducing cost and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0025] Combine the following Figure 1 The technical solution of the present invention is further illustrated by specific embodiments.

[0026] like Figure 1 The energy-saving production device for flushable wet-laid spunlaced nonwoven fabrics shown comprises: a first wet-laid web-forming mechanism 1, a first transmission net 3, a first spunlaced mechanism 7, a second wet-laid web-forming mechanism 2, a second transmission net 4, a second spunlaced mechanism 8 and an unwinding rack 5. The unwinding rack 5 is provided with a plurality of unwinding disks at intervals, and a plurality of mesh strips 6 are unwound in parallel at the same time. In this embodiment, the mesh strips 6 are made of decomposable fiber mesh strips, which are conducive to decomposition after use. The width of the mesh strips 6 does not exceed 2 cm, and adjacent mesh strips 6 are not directly fixed, which is conducive to being flushed in water.

[0027] The first wet-laid web-forming mechanism 1 is arranged below the unwinding frame 5, and the structure is compact. The first hydroentanglement mechanism 7 is arranged in front of the first wet-laid web-forming mechanism 1 and the unwinding frame 5, and the first transmission net 3 is arranged between the first wet-laid web-forming mechanism 1 and the first hydroentanglement mechanism 7. In this embodiment, a first pressing roller assembly 11 is arranged behind the first hydroentanglement mechanism 7. The first transmission net 3 passes through the first pressing roller assembly, which is conducive to the pressing of the first fiber web on the bottom surface of the mesh strip 6, and is fixed by hydroentanglement to avoid the loosening of adjacent mesh strips 6.

[0028] like Figure 1 As shown, the second spunlacing mechanism 8 is arranged in front of the first spunlacing mechanism 7, and the second wet-laid web-forming mechanism 2 is arranged above the second spunlacing mechanism 8, so as to improve the space utilization. The second transmission net 4 is arranged between the second wet-laid web-forming mechanism 2 and the second spunlacing mechanism 8, and a second pressing roller assembly 12 is arranged between the first spunlacing mechanism 7 and the second spunlacing mechanism 8. The second transmission net 4 passes through the second pressing roller assembly, so that the second fiber web can be compounded on the top surface of the mesh strip 6, and reinforced by the spunlacing effect of the second spunlacing mechanism 8, so as to further increase the stability of the adjacent mesh strips 6.

[0029] In addition, a dryer 9 is disposed in front of the second spunlace mechanism 8 , and the composite nonwoven fabric 10 is dried by the dryer 9 .

[0030] A nonwoven fabric production process comprises the following steps:

[0031] like Figure 1 As shown, several unwinding discs are arranged in parallel on the unwinding frame 5, and multiple mesh strips 6 that are in contact with each other but not fixed are unwound at the same time, forming a base fabric of a certain width. Adjacent mesh strips in the base fabric are in contact with each other but not fixed, which is conducive to subsequent dispersal and decomposition, but can improve the tensile effect and avoid the problem of breakage during unwinding and use;

[0032] One or more plant fibers are mixed with water to obtain a mixture (slurry), and the mixture is dehydrated by a first wet-laid web-forming mechanism 1 to form a first fiber web on a first transmission net 3. The first fiber web is thin and has an unstable structure before water spunlace.

[0033] The first fiber web is pressed on the bottom surface of the base fabric by the first pressing roller assembly 11 to obtain a first composite material. When the first composite material passes above the first spunlace mechanism 7, the first spunlace is performed to strengthen the bonding between the first fiber web and the base fabric.

[0034] The mixture is dehydrated by the second wet web forming mechanism 2 and a second fiber web is formed on the second transmission net 2. The second fiber web is compounded on the top surface of the first composite by the second pressing roller assembly 12 to obtain a second composite, so that the first fiber web and the second fiber web are compounded on the bottom surface and the top surface of the mesh strip 6, which can realize the connection of multiple mesh strips 6 in parallel and can be quickly dispersed when flushing;

[0035] When the second composite material passes under the second spunlacing mechanism 8, the second spunlacing is performed to strengthen the combination of the second fiber web, the base fabric and the first fiber web, thereby obtaining a composite nonwoven fabric 10 with a relatively stable structure. The base fabric reduces the separation of the first fiber web and the second fiber web during the spunlacing process, which is beneficial to improving the qualified rate and reducing energy consumption and cost.

[0036] The composite nonwoven fabric 10 is fed into a drying machine 9 for dehydration and hot air drying;

[0037] The dried composite nonwoven fabric 10 is cut into sections to obtain sheet-like disintegratable wet-laid spunlaced nonwoven fabrics, which are then stacked and packaged.

[0038] The sheet-like flushable wet-laid spunlace nonwoven fabric is small in size, about 10 cm in width and 20 cm in length. After being thrown into the toilet, under the impact of the water flow, the first fiber web and the second fiber web are flushed away from the mesh strip 6, so that the adjacent mesh strips 6 are separated. A single mesh strip 6 has a small width, a short length, and can be decomposed, thus avoiding the problem of toilet blockage.

[0039] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An energy-saving production device for flushable wet-laid spunlaced nonwoven fabrics, characterized in that: include: A first wet-laid web-forming mechanism, a first transmission net, a first hydroentanglement mechanism, a second wet-laid web-forming mechanism, a second transmission net, a second hydroentanglement mechanism and a reel-out rack, wherein the reel-out rack is provided with a plurality of reel-out disks at intervals for simultaneously reeling a plurality of mesh strips in parallel, the first wet-laid web-forming mechanism being arranged below the reel-out rack, the first hydroentanglement mechanism being arranged in front of the first wet-laid web-forming mechanism and the reel-out rack, the first transmission net being arranged between the first wet-laid web-forming mechanism and the first hydroentanglement mechanism, the second hydroentanglement mechanism being arranged in front of the first hydroentanglement mechanism, the second wet-laid web-forming mechanism being arranged above the second hydroentanglement mechanism, and the second transmission net being arranged between the second wet-laid web-forming mechanism and the second hydroentanglement mechanism.

2. The energy-saving production device for flushable wet-laid spunlaced nonwoven fabric according to claim 1 is characterized in that: A dryer is arranged in front of the second water spurting mechanism.

3. The energy-saving production device for flushable wet-laid spunlaced nonwoven fabric according to claim 1, characterized in that: A first pressing roller assembly is arranged behind the first entanglement mechanism, and a second pressing roller assembly is arranged between the first entanglement mechanism and the second entanglement mechanism.

4. The energy-saving production device for flushable wet-laid spunlaced nonwoven fabric according to claim 3 is characterized in that: The first transmission network passes through a first pressure roller assembly, and the second transmission network passes through a second pressure roller assembly.

5. The energy-saving production device for flushable wet-laid spunlaced nonwoven fabric according to claim 1, characterized in that: The mesh strips are made of decomposable fiber mesh strips.

6. The energy-saving production device for flushable wet-laid spunlaced nonwoven fabric according to claim 1, characterized in that: The width of the mesh strip does not exceed 2 cm.

7. A nonwoven fabric production process, characterized in that: The energy-saving production device for flushable wet-laid spunlaced nonwoven fabrics according to any one of claims 1 to 6 comprises the following steps: Several unwinding discs are arranged in parallel on the unwinding rack, and multiple mesh strips that are in contact with each other but not fixed are unwound at the same time to form a base fabric of a certain width; Mixing one or more plant fibers with water to obtain a mixture, dehydrating the mixture using a first wet-laid web-forming mechanism, and forming a first fiber web on a first transmission net; The first fiber web is pressed on the bottom surface of the base fabric by a first pressing roller assembly to obtain a first composite material. When the first composite material passes above the first spunlace mechanism, the first spunlace is performed to strengthen the bonding between the first fiber web and the base fabric. Dehydrating the mixture by a second wet-laid web-forming mechanism and forming a second fiber web on a second transmission net, and compounding the second fiber web on the top surface of the first composite by a second pressing roller assembly to obtain a second composite; When the second composite material passes under the second spunlace mechanism, the second spunlace is performed to strengthen the combination of the second fiber web, the base fabric and the first fiber web, thereby obtaining a composite nonwoven fabric.

8. The nonwoven fabric production process according to claim 7, characterized in that: The method also includes a drying step, in which the composite nonwoven fabric is fed into a drying machine for dehydration and hot air drying.

9. The nonwoven fabric production process according to claim 8, characterized in that: The method also includes a cutting step, in which the dried composite nonwoven fabric is cut into sections to obtain sheet-shaped flushable wet-laid spunlaced nonwoven fabrics, and the flushable wet-laid spunlaced nonwoven fabrics are stacked and packaged.

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