A spunlace fabric production line

Abstract

This utility model relates to the field of spunlace fabric production technology and discloses a spunlace fabric production line, which includes a sizing screen and a spunlace screen. Corresponding web-forming screens and a first web-forming vacuum suction device are arranged on both sides of the sizing screen. After the fiber web is formed on the sizing screen, the mutual compression between the web-forming screen and the sizing screen smooths the rough surface of the fiber web. The first web-forming vacuum suction device then removes moisture from the fiber web, reducing its moisture content. This reduces the deviation in distance between the fiber web and the hydroentanglement during the first hydroentanglement process, ensuring that the hydroentanglement energy is fully and evenly received by the fiber web, promoting uniform fiber entanglement. Compared to roller compression, this method is gentler. While the web-forming screen is compressing the sizing screen, the moisture is absorbed by the vacuum suction device below, and the negative pressure adsorbs the fiber web, preventing damage to its integrity. This utility model features a simple structure, strong practicality, and good performance.

Description

Technical Field

[0001] This utility model relates to the field of spunlace fabric production technology, and more specifically, to a spunlace fabric production line. Background Technology

[0002] Washable spunlace fabric is a product that combines wet web forming and hydroentanglement reinforcement processes. In current production, there is often a problem that the physical and chemical properties such as tensile strength, elongation, and washability ratio of the same batch of fabric vary greatly in different locations. The main reason for this is the uneven fiber entanglement in different parts of the spunlace fabric, which leads to problems such as low strength, easy breakage, and incomplete washability during use.

[0003] In the prior art, patent document CN 203295794 U discloses a collagen fiber base fabric production line, which discloses the use of upper and lower rollers of a flattening machine to squeeze out the moisture in the fiber web. Its shortcomings are: if the upper and lower rollers squeeze the moisture in the fiber web, if the pressure is too tight, the moisture in the fiber web will accumulate in front of the rollers, and the accumulated moisture will damage the integrity of the fiber web. If the pressure is too loose, the fibers in the fiber web are easy to stick on the pressure rollers, which will not only damage the integrity, but also prevent the moisture in the fiber web from being discharged, thus failing to improve the utilization of water needle energy in hydroentangling. In practical applications, it is difficult to control. Even if the roller pressure is adjusted appropriately, moisture will accumulate in front of the rollers after a period of operation, resulting in poor performance.

[0004] In view of this, the applicant has innovatively designed the spunlace fabric production line of this application, which aims to flatten the web and remove moisture from the web, so that the web is subjected to more and more uniform water jet energy, thereby improving the physical and chemical properties of the washable spunlace fabric. Utility Model Content

[0005] This invention provides a spunlace fabric production line to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A spunlace fabric production line includes a sizing screen and a spunlace screen, wherein corresponding web-forming screens and a first web-forming vacuum suction device are provided on both sides of the sizing screen.

[0008] The mesh curtain includes at least two mesh curtain rollers, and the mesh curtain is wound around the mesh curtain rollers. The mesh curtain and the sizing mesh curtain are driven to move synchronously through the mesh curtain rollers.

[0009] Preferably, the hydroentangled mesh curtain is provided with multiple hydroentanglement mechanisms, each hydroentanglement mechanism including a hydroentanglement machine and a hydroentanglement vacuum suction device correspondingly arranged on both sides of the hydroentangled mesh curtain, and a second hydroentanglement vacuum suction device is provided between each hydroentanglement mechanism.

[0010] A hydroentangled drum is also provided behind the hydroentangled mesh curtain, and a third hydroentangled mesh vacuum suction device is provided in front of the hydroentangled drum at the hydroentangled mesh curtain.

[0011] The vacuum suction device includes a negative pressure suction head, which is provided with multiple rows of suction elongated holes.

[0012] The suction holes in adjacent rows of long suction holes are staggered.

[0013] The aspect ratio of the suction orifice is 10-15:1.

[0014] This invention uses a mesh curtain for web preparation, which is gentler than roller extrusion. When the mesh curtain is pressing the sizing mesh, the moisture is absorbed by the vacuum suction device below, and the negative pressure adsorbs the web, so that the integrity of the web is not damaged. The web after this treatment is not only flat and intact, but also has less moisture, which is conducive to the water needle energy of hydroentangling to entangle the web.

[0015] By setting corresponding web-forming screens and a first web-forming vacuum suction device on both sides of the pulping screen, after the fiber web is formed on the pulping screen, the mutual compression between the web-forming screen and the pulping screen smooths out the rough surface of the fiber web. The first web-forming vacuum suction device removes moisture from the fiber web, reducing the moisture content. This reduces the deviation in distance between the fiber web and the hydroentanglement during the first hydroentanglement process, ensuring that the hydroentanglement energy is fully and evenly received by the fiber web, thus promoting uniform fiber entanglement.

[0016] In the preferred embodiment, by adding a web vacuum suction device before each hydroentanglement mechanism, the moisture in the web is reduced, so that the web can receive sufficient and uniform water jet energy during each hydroentanglement, resulting in a fabric surface with more uniform fiber entanglement, improving the physical and chemical properties of the hydroentangled fabric such as tensile strength, elongation, and washability, and reducing the fluctuation of physical and chemical properties.

[0017] This utility model has the characteristics of simple structure, strong practicality and good use effect, and is worth promoting and using widely. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the wire mesh curtain in the embodiments of this application;

[0020] Figure 3 A schematic diagram of a four-row long-hole negative pressure suction head;

[0021] Figure 4 This is a schematic diagram of a negative pressure suction head with two rows of long holes. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0023] See Figure 1-4 A spunlace fabric production line includes a sizing screen 3, a spunlace screen 14, and a spunlace drum 32. The sizing screen 3 is wound around the sizing screen rollers 11, 12, and 13, as well as the rollers (not shown) of the headbox 1, maintaining the operation of the sizing screen. Corresponding web-forming screens 9 and a first web-forming vacuum suction device 7 are provided on both sides of the sizing screen 3. The web-forming screen 9 includes at least two web-forming rollers 8 and 10. In this embodiment, two web-forming rollers 8 and 10 are used to pull the screen straight. The synchronous pulleys 35 of the two web-forming rollers 8 and 10 are connected by a synchronous belt drive. The other end of one of the web-forming rollers 8 or 10 is connected to a drive mechanism (not shown). Alternatively, multiple parallel web-forming rollers can be used, pressing the web-forming screen 9 onto the sizing screen 3. The screen is wound around the web-forming rollers 8 and 10, and the web-forming screen and the sizing screen 3 move synchronously through the web-forming rollers 8 or 10. The headbox 1 forms a wet web on the sizing screen 3. Vacuum suction devices 4, 5, and 6 for wet web forming are arranged below the sizing screen 3. When the fiber web 2 formed after sizing moves forward with the sizing screen 3 to the web forming screen 9 and the first web forming vacuum suction device 7, the web forming screen 9 and the sizing screen 3 squeeze each other, flattening the rough surface of the fiber web 2. The first web forming vacuum suction device 7 then removes moisture from the fiber web 2, reducing the moisture content. This reduces the deviation between the fiber web 2 and the hydroentanglement distance when the fiber web 2 undergoes the first hydroentanglement, allowing the hydroentanglement energy to be fully and evenly received by the fiber web 2, promoting uniform fiber entanglement.

[0024] The spunlace mesh curtain 14 is wound around the spunlace mesh curtain rollers 15 and 28 and at least one other roller (not shown in the figure) to maintain the operation of the spunlace mesh curtain 14. The spunlace mesh curtain 14 and the sizing mesh curtain 3 are connected at rollers 12 and 15, and the fiber web 2 is transferred from the sizing mesh curtain 3 to the spunlace mesh curtain 14. The spunlace mesh curtain 14 is provided with multiple spunlace mechanisms. Each spunlace mechanism includes spunlace machines 16, 17, 18, and 19 correspondingly arranged on both sides of the spunlace mesh curtain 14 and spunlace vacuum suction devices 20, 21, 22, and 23. In this embodiment, four spunlace mechanisms are used at the spunlace mesh curtain 14. A second web vacuum suction device 24, 25, and 26 is provided between each spunlace mechanism. A hydroentangled drum 32 is installed behind the hydroentangled mesh curtain 14. The hydroentangled drum 32 is connected to the hydroentangled mesh curtain 14 at the hydroentangled mesh curtain roller shaft 28. The fiber web 2 is transferred from the hydroentangled mesh curtain 14 to the hydroentangled drum 32. A hydroentangled drum machine 29 and 30 and a fiber web roller shaft 31 are installed on one side of the hydroentangled drum 32 to hydroentangle and reinforce the reverse side of the fiber web 2, and then output to the next process via the fiber web roller shaft 31. A third web vacuum suction device 27 is installed in front of the hydroentangled drum 32 at the hydroentangled mesh curtain 14.

[0025] After the web 2 has its moisture removed by the first web vacuum suction device 7, it enters the first hydroentangling mechanism's hydroentangling machine 16 and hydroentangling vacuum suction device 20. The moisture content is reduced, and the energy from the water jets is fully and evenly received by the web 2, promoting uniform fiber entanglement. After the first hydroentangling, the web 2 has its moisture removed again by the second web vacuum suction device 24. When the web 2 enters the second hydroentangling mechanism's hydroentangling machine 17 and hydroentangling vacuum suction device 21, the moisture content is reduced, and the energy from the water jets is fully and evenly received by the web 2, resulting in uniform fiber entanglement. Simultaneously, moisture is removed by the second web vacuum suction devices 25 and 26 and the third web vacuum suction device 27, ensuring uniform fiber entanglement in the corresponding hydroentangling processes. This results in a fabric with uniform fiber entanglement, improving the tensile strength, elongation, and washability of the hydroentangled fabric, and reducing fluctuations in these physical and chemical properties.

[0026] The fiber mesh curtain 9 and the sizing mesh curtain 3 are made of the same or similar material and have the same mesh count. The first fiber mesh vacuum suction device 7, the second fiber mesh vacuum suction devices 24, 25, and 26, and the third fiber mesh vacuum suction device 27 all include a negative pressure suction head. The negative pressure suction head is provided with multiple rows of suction elongated holes 33. The suction elongated holes 34 between adjacent rows of suction elongated hole groups 33 are staggered to allow for more and more uniform extraction of moisture from the fiber mesh 2. The aspect ratio of the suction elongated hole 34 is preferably 10-15:1. The specific length and width values ​​are determined based on the actual conditions of the equipment and production, and the suction area of ​​a single strip hole is set accordingly.

[0027] Compared with the washable spunlace fabric produced before the improvement, the washable spunlace fabric produced using the above-described embodiments has more accurate fabric surface and physicochemical properties, and smaller deviation in the data fluctuation of the same index.

[0028]

[0029] After the improvement, the washable spunlace fabric is more fully entangled with water needles, and the utilization rate of Lyocell and viscose fibers in the washable fabric is increased, which can reduce the amount used.

[0030]

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spunlace line comprising a web pulp screen and a spunlace screen, characterized in that: The cloth screen is equipped with corresponding cloth screens and a first cloth screen vacuum suction device on both sides.

2. The spunlace fabric production line according to claim 1, characterized in that: The mesh curtain includes at least two mesh curtain rollers, and the mesh curtain is wound around the mesh curtain rollers. The mesh curtain and the sizing mesh curtain are driven to move synchronously through the mesh curtain rollers.

3. The spunlace fabric production line according to claim 1, characterized in that: The hydroentangled mesh curtain is provided with multiple hydroentanglement mechanisms. Each hydroentanglement mechanism includes a hydroentanglement machine and a hydroentanglement vacuum suction device that are respectively arranged on both sides of the hydroentangled mesh curtain. A second hydroentanglement vacuum suction device is provided between each hydroentanglement mechanism.

4. The spunlace fabric production line according to claim 1, characterized in that: A hydroentangled drum is also provided behind the hydroentangled mesh curtain, and a third hydroentangled mesh vacuum suction device is provided in front of the hydroentangled drum at the hydroentangled mesh curtain.

5. The spunlace fabric production line according to claim 1, 2, 3, or 4, characterized in that: The vacuum suction device includes a negative pressure suction head, which is provided with multiple rows of suction elongated holes.

6. The spunlace fabric production line according to claim 5, characterized in that: The suction holes in adjacent rows of long suction holes are staggered.

7. The spunlace fabric production line according to claim 6, characterized in that: The aspect ratio of the suction orifice is 10-15:1.

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