Preparation device of non-woven fabric double-sided lines and non-woven fabric

Abstract

A preparation device for non-woven fabric double-faced lines comprises a supporting assembly and a spunlace assembly, the supporting assembly comprises a supporting roller, the supporting roller is used for supporting a fiber net to be spunlaced, and a plurality of protruding parts and concave parts are arranged on the surface of the supporting roller; the spunlace assembly is parallel to the supporting roller and used for generating a plurality of strands of high-pressure water felting needles, and the high-pressure water felting needles jet towards the supporting roller so that the fiber net can be entangled. The surface structure design of the fiber web supporting roller is changed and combined with the high-pressure water pricking needle force of the spunlace assembly, when the fiber web passes through the spunlace assembly, the supporting roller supports the fluffy fiber web, the fiber web placed in the concave part is fixed to the low position of the concave part through the high-pressure water pricking needle, and the fiber web placed in the convex part is fixed to the high position of the convex part; the raised grain non-woven fabric with a certain height difference is formed, so that double-sided grains of the spunlace non-woven fabric are realized, the three-dimensional effect of the grains is better, and the double thickness of single-sided grains of a conventional process is realized.

Description

Technical Field

[0001] This application relates to the field of fabric production technology, specifically to an apparatus for preparing double-sided nonwoven fabric texture and a nonwoven fabric. Background Technology

[0002] Spunlace nonwoven fabric is made from textile fibers (including special spunlace fibers) as raw materials. The process involves opening, mixing, carding, and cross-laying the fibers to form a fiber web of a certain thickness. Then, high-pressure, high-speed micro-jet water is sprayed onto the fiber web, causing the fibers to entangle and form a nonwoven fabric with a certain strength and thickness. This strengthens the fiber web and gives it a certain strength. The resulting fabric is called spunlace nonwoven fabric. To make spunlace nonwoven fabric more aesthetically pleasing and suitable for different applications, many manufacturers often process it to create various patterns on its surface.

[0003] Currently, there are two types of texture effects for spunlace nonwoven fabrics. One type can only create a single-sided effect, such as a pearl texture, where one side is raised and the other side is flat. The other type is a perforated type, where the texture is obvious on the front and blurred on the back. In actual manufacturing, a texture roller / mesh made of steel / nickel or plastic is usually pre-made and fitted onto the spunlace roller. If the spunlace does not penetrate the nonwoven fabric, it can create a raised texture on the side away from the drum; if the spunlace penetrates the nonwoven fabric, it will create a perforated mesh.

[0004] According to the above technical solution, if the spunlace does not penetrate the non-woven fabric, the side near the drum cannot produce a pattern and can only be a flat weave; if the spunlace penetrates the non-woven fabric, it will form a perforated mesh, which has a poor feel, low thickness, and cannot achieve a double-sided three-dimensional texture. Utility Model Content

[0005] This application provides an apparatus for preparing double-sided textured nonwoven fabrics to achieve double-sided textured nonwoven fabrics.

[0006] According to one aspect of this application, one embodiment provides an apparatus for preparing a double-sided nonwoven fabric texture, comprising: a support assembly and a hydroentangling assembly, wherein the support assembly includes a support roller for supporting a fiber web to be hydroentangled, and the surface of the support roller is provided with a plurality of protrusions and recesses; the hydroentangling assembly is parallel to the support roller, and the hydroentangling assembly is used to generate multiple strands of high-pressure hydroentangling needles, and the high-pressure hydroentangling needles are sprayed toward the support roller to cause the fiber web to entangle.

[0007] In another embodiment, the outer ring of the support roller along the radial section is wavy, and both the protrusions and the recesses are strip-shaped along the length of the support roller.

[0008] In another embodiment, any one of the protrusions and any one of the recesses are arranged adjacent to each other.

[0009] In another embodiment, the end faces of both the protrusion and the recess are smooth and flat, and the connection between the protrusion and the recess is a smooth transition.

[0010] In another embodiment, the height difference between the highest point of the protrusion and the lowest point of the recess is in the range of 2mm to 4mm.

[0011] In another embodiment, both the protrusion and the recess are provided with a plurality of drainage holes, and the drainage holes are used to draw in and drain high-pressure water.

[0012] In another embodiment, the support assembly further includes a water suction tank, and the support roller is hollow and communicates with the water suction tank so that high-pressure water is discharged into the water suction tank through the drain hole.

[0013] In another embodiment, the water suction box is provided with a negative pressure component to create a negative pressure in the water suction box for drawing high-pressure water.

[0014] In another embodiment, the hydroentangling assembly includes a pressure chamber, a high-pressure component, and a hydroentangling needle plate. The high-pressure component is disposed in the pressure chamber and pressurizes the pressure chamber. The hydroentangling needle plate is connected to the pressure chamber and has multiple water outlet holes to form multiple high-pressure hydroentangling needles.

[0015] According to one aspect of this application, one embodiment provides a nonwoven fabric including a first pattern and a second pattern on both sides of the nonwoven fabric, wherein the first pattern and the second pattern are configured as double-sided three-dimensional patterns, and the nonwoven fabric is produced by the aforementioned nonwoven fabric double-sided pattern preparation device.

[0016] According to the above embodiment, the nonwoven fabric double-sided texture preparation device changes the surface structure design of the fiber web support roller and combines it with the high-pressure hydroentangling needle of the hydroentangling component. When passing through the hydroentangling component, the support roller lifts the fluffy fiber web. The fiber web placed in the concave part is fixed at the low part of the concave part by the high-pressure hydroentangling needle, and the fiber web placed in the convex part is fixed at the high part of the convex part, forming a wavy nonwoven fabric with a certain height difference, thereby realizing the double-sided texture of the hydroentangled nonwoven fabric, and the texture three-dimensional effect is better, achieving twice the thickness of the single-sided texture of conventional processes. Attached Figure Description

[0017] Figure 1 A schematic diagram of the apparatus for preparing double-sided nonwoven fabric texture;

[0018] Figure 2 This is a schematic diagram of the support roller structure in one embodiment;

[0019] Figure 3 A top view of the support roller in another embodiment;

[0020] Figure 4 This is a schematic diagram of the hydroentanglement component in another embodiment;

[0021] Figure 5 A schematic diagram of the structure of a nonwoven fabric prepared using a device for preparing double-sided nonwoven fabric texture.

[0022] Reference numerals: 1. Support assembly; 11. Support roller; 12. Protrusion; 13. Recess; 14. Drainage hole; 15. Negative pressure component; 2. Hydroentangling assembly; 21. Pressure box; 22. High pressure component; 23. Hydroentangling needle plate; 24. Water outlet; 25. High-pressure hydroentangling needle; 3. Fiber web; 31. First texture; 32. Second texture. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0024] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0026] Currently, there are two types of texture effects for spunlace nonwoven fabrics: one can only create a single-sided effect, such as a pearl texture, where one side is raised and the other is flat; the other is a perforated type, where the texture is obvious on the front and blurred on the back. In actual manufacturing, a texture roller / mesh made of steel / nickel or plastic is typically pre-made and fitted onto the spunlace roller. If the spunlace doesn't penetrate the nonwoven fabric, a raised texture can be formed on the side away from the drum; if it does penetrate the nonwoven fabric, a perforated mesh will be formed. If the spunlace doesn't penetrate the nonwoven fabric, no pattern can be created on the side closest to the drum, resulting in only a flat texture. Perforated mesh results in a poorer feel, lower thickness, and an inability to achieve a double-sided three-dimensional texture.

[0027] Example 1:

[0028] This application provides an apparatus for preparing double-sided textured nonwoven fabric, which can achieve double-sided textured nonwoven fabric by changing the surface structure of the hydroentangling roller and combining it with hydroentangling pressure.

[0029] Please refer to Figure 1 and Figure 2 One embodiment provides an apparatus for preparing a double-sided nonwoven fabric texture, including a support component 1 and a hydroentangling component 2. The support component 1 includes a support roller 11, which is used to support the fiber web 3 to be hydroentangled, and the surface of the support roller 11 is provided with a plurality of protrusions 12 and recesses 13. The hydroentangling component 2 is parallel to the support roller 11 and is used to generate multiple strands of high-pressure hydroentangling needles 25, which are sprayed toward the support roller 11 to make the fiber web 3 entangled.

[0030] In this embodiment, by designing and changing the surface structure of the fiber web 3 support roller 11, it is forcefully combined with the high-pressure hydroentangling needle 25 of the hydroentangling assembly 2. When passing through the hydroentangling assembly 2, the support roller 11 lifts the fluffy fiber web 3. The fiber web 3 placed in the recessed part 13 is fixed at the low part of the recess by the high-pressure hydroentangling needle 25, and the fiber web 3 placed in the protruding part 12 is fixed at the high part of the protrusion, forming a wavy nonwoven fabric with a certain height difference, thereby realizing the double-sided texture of the hydroentangled nonwoven fabric, and the texture three-dimensional effect is better, achieving twice the thickness of the single-sided texture of conventional processes.

[0031] For further details, please refer to... Figure 1 and Figure 2The outer ring of the support roller 11 along its radial cross-section is wavy, and both the protrusions 12 and the recesses 13 are strip-shaped along the length of the support roller 11. Any protrusion 12 and any recess 13 are arranged adjacent to each other. The end faces of the protrusions 12 and the recesses 13 are smooth and gentle, and the connection between the protrusions 12 and the recesses 13 is smooth. The wavy shape of the protrusions 12 and the recesses 13 in the cross-section of the support roller 11 makes the finished nonwoven fabric more beautiful and the double-sided texture more uniform. The uniform transition between the protrusions 12 and the recesses 13 also allows the fiber web 3 to better adhere to the support roller 11, forming a smoother nonwoven fabric.

[0032] In other embodiments, the protrusions 12 and recesses 13 of the support roller 11 can be configured with other shapes with different heights, layouts, and shapes, so that the formed nonwoven fabric has a double-sided three-dimensional pattern. For example, setting hemispherical protrusions and recesses can form a double-sided pearl pattern, or it can be designed as a double-sided asymmetrical pattern, etc.

[0033] For further details, please refer to... Figure 1 and Figure 2 The height difference between the highest point of the protrusion 12 and the lowest point of the recess 13 ranges from 2mm to 4mm. Specifically, it can be designed according to the required nonwoven fabric specifications. The greater the height difference, the thicker the spunlace nonwoven fabric. In this application, the raw material weight is preferably greater than 60gsm. Using the support roller 11 of this application for a certain thickness of nonwoven fabric can reduce material breakage.

[0034] In this embodiment, the distance between adjacent protrusions 12, i.e. the spacing of the wave pattern, can be set according to actual needs. The pattern style is designed according to the environment in which the non-woven fabric is used. The larger the spacing, the wider the double-sided protrusions.

[0035] For further details, please refer to... Figure 2 and Figure 3 The high-pressure water jetting needle 25 presses the fiber web 3 onto the surface of the support roller 11 and the fibers become entangled with each other. In order to reduce the water absorbed by the fiber web 3, the support assembly 1 also includes a water absorption box. The support roller 11 is hollow and communicates with the water absorption box. The protrusion 12 and the recess 13 of the support roller 11 are provided with a number of drainage holes 14 that communicate with the inner cavity of the support roller 11 so that the high-pressure water can be discharged into the water absorption box through the drainage holes 14.

[0036] For further details, please refer to... Figure 2 and Figure 3The water suction box is equipped with a negative pressure component 15 to create negative pressure in the water suction box for sucking up high-pressure water. Specifically, the negative pressure component 15 can be an air pump. The air pump is connected to the water suction box to create negative pressure, which not only makes the drain hole 14 have a certain adsorption force on the fiber mesh 3, but also has a strong suction effect. Under the action of gravity and the water suction box, high-pressure water can be quickly adsorbed from the fiber mesh 3, reducing the influence of gravity on the shape of the fiber mesh 3.

[0037] In this embodiment, the water suction box can be directly installed in the inner cavity of the support roller 11. In other embodiments, the water suction box can also be connected to the outside through a pipe from the shaft end of the support roller 11. The specific structure can be designed and modified according to the space of the production line (the water suction box is not labeled in this application).

[0038] In this embodiment, please refer to Figure 2 The support roller 11 and the protrusions 12 and recesses 13 on the surface are integrated into one structure. The outer ring of the support roller 11 is directly produced in a wave shape during manufacturing. In other embodiments, the support roller 11 can also be configured as a detachable structure, including an intermediate roller and a textured sleeve roller. The intermediate roller is used for rotation, and the textured sleeve roller can be designed with various different patterns and parameters. It can be replaced and fitted onto the outer ring of the intermediate roller according to specific production needs to form the "surface" of the intermediate roller. A water flow channel can be formed between the outer ring of the intermediate roller and the textured sleeve roller.

[0039] For further details, please refer to... Figure 1 and Figure 4 The hydroentanglement assembly 2 includes a pressure chamber 21, a high-pressure component 22, and a hydroentanglement needle plate 23. The high-pressure component 22 is located in the pressure chamber 21 and pressurizes the pressure chamber 21. Specifically, the high-pressure component 22 uses an air pump and a one-way valve to pressurize the pressure chamber 21. The hydroentanglement needle plate 23 is connected to the pressure chamber 21, and multiple water outlet holes 24 are opened on the hydroentanglement needle plate 23. The water in the pressure chamber 21 is sprayed out from the water outlet holes 24 under high pressure to form multiple high-pressure hydroentanglement needles 25 facing the fiber web 3.

[0040] In other embodiments, the hydroentangling assembly 2 may also be other hydroentangling equipment in the prior art, and the hydroentangling assembly 2 may be provided in one set or multiple sets may be arranged along the periphery of the support roller 11, so that the support roller 11 drives the fiber web 3 to rotate and continuously receive high-pressure water jets within the range of the hydroentangling assembly 2 to strengthen the fiber web 3.

[0041] Example 2:

[0042] One embodiment provides a nonwoven fabric, please refer to... Figure 5The nonwoven fabric includes a first texture 31 and a second texture 32 on both sides of the nonwoven fabric, and the first texture 31 and the second texture 32 are set as double-sided three-dimensional textures. In this embodiment, the first texture 31 and the second texture 32 are both set as stripes about the raised part of the fabric. In other embodiments, the nonwoven fabric may have a double-sided pearl texture or a double-sided asymmetrical texture. The specific texture can be designed according to the shape of the support roller 11.

[0043] The nonwoven fabric with double-sided texture described in this application is produced using the aforementioned apparatus for preparing double-sided nonwoven fabric textures. The specific steps are as follows:

[0044] S1. Open the package: Loosen the whole package of cotton.

[0045] S2. Cleaning: Removing cottonseed hulls, fibrous materials, and other impurities from raw cotton.

[0046] S3. Mixing: Mixing the fibers after cleaning;

[0047] S4. Carding: The cleaned cotton fibers are fed into a carding machine to card the aggregated fiber clumps into individual fibers.

[0048] S5. Laying the web: Randomly and randomly overlapping the combed fibers to form a loose web structure;

[0049] S6. Pre-punching: The original dry fiber web 3 is pretreated to a wet state and subjected to a certain water pressure to initially form a nonwoven fabric, which greatly reduces the fuzzing and shedding of the fabric surface.

[0050] S7. Hydroentangling: The loose mesh structure is hydroentangled by the hydroentangling component 2. This process involves multiple high-pressure hydroentangling needles 25 penetrating the fiber mesh 3, causing the messy fibers to bind together and be reinforced.

[0051] The support roller 11 lifts the fluffy fiber web 3. During hydroentangling, the fiber web 3 placed in the recessed part 13 is fixed at the low part of the recess by the high-pressure hydroentangling needle 25, and the fiber web 3 placed in the raised part 12 is fixed at the high part of the raised part. The water on the fiber web 3 is quickly absorbed from the fiber web 3 through the drainage hole 14, forming a wavy nonwoven fabric with a certain height difference, achieving double the thickness of the single-sided texture of the conventional process.

[0052] S8. Debleaching: Debleaching is performed on the spunlace nonwoven fabric to remove impurities and cotton wax pectin on the cotton fibers.

[0053] S9. Drying: The fabric after debleaching has a high moisture content and needs to undergo one or more drying processes.

[0054] S10. Cutting into rolls: The dried fabric sample is cut into rolls according to the product specifications to form the nonwoven fabric of this application.

[0055] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. An apparatus for preparing double-sided textured nonwoven fabric, characterized in that, include: The support assembly (1) and the hydroentangling assembly (2) are provided. The support assembly (1) includes a support roller (11) for supporting the fiber web (3) to be hydroentangled, and the surface of the support roller (11) is provided with a plurality of protrusions (12) and recesses (13). The hydroentangling assembly (2) is parallel to the support roller (11) and is used to generate multiple high-pressure hydroentangling needles (25), and the high-pressure hydroentangling needles (25) are sprayed toward the support roller (11) to make the fiber web (3) entangled.

2. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 1, characterized in that, The outer ring of the support roller (11) along the radial section is wavy, and the protrusion (12) and the recess (13) are both strip-shaped along the length of the support roller (11).

3. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 2, characterized in that, The protrusion (12) and the recess (13) described in any one of them are arranged adjacent to each other.

4. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 3, characterized in that, The end faces of the protrusion (12) and the recess (13) are both smooth and flat, and the connection between the protrusion (12) and the recess (13) is smooth.

5. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 2, characterized in that, The height difference between the highest point of the protrusion (12) and the lowest point of the recess (13) is between 2 mm and 4 mm.

6. The apparatus for preparing double-sided nonwoven fabric texture as described in any one of claims 1-5, characterized in that, The protrusion (12) and the recess (13) are provided with a plurality of drainage holes (14), and the drainage holes (14) are used to suck up and drain high-pressure water.

7. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 6, characterized in that, The support assembly (1) also includes a water suction box. The support roller (11) is hollow and communicates with the water suction box so that high-pressure water is discharged into the water suction box through the drain hole (14).

8. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 7, characterized in that, The water suction box is equipped with a negative pressure component (15) to create a negative pressure in the water suction box for drawing high-pressure water.

9. The apparatus for preparing double-sided nonwoven fabric texture as described in claim 6, characterized in that, The hydroentanglement assembly (2) includes a pressure box (21), a high-pressure component (22), and a hydroentanglement needle plate (23). The high-pressure component (22) is disposed in the pressure box (21) and pressurizes the pressure box (21). The hydroentanglement needle plate (23) is connected to the pressure box (21), and the hydroentanglement needle plate (23) has multiple water outlet holes (24) to form multiple high-pressure hydroentanglement needles (25).

10. A nonwoven fabric, characterized in that, The nonwoven fabric includes a first texture (31) and a second texture (32) on both sides of the nonwoven fabric, and the first texture (31) and the second texture (32) are configured as double-sided three-dimensional textures. The nonwoven fabric is produced by the nonwoven fabric double-sided texture preparation apparatus as described in any one of claims 1-9.

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