High-elastic interlayer non-woven fabric production device

Abstract

The utility model belongs to the technical field of non-woven equipment, and particularly relates to a high-elastic interlayer non-woven fabric production device. The high-elastic interlayer non-woven fabric production device comprises a fiber net conveying belt, a heating device, a needling device, a cooling device and a cloth roller which are sequentially arranged, and the fiber net conveying belt is at least provided with three synchronous conveying channels. Based on the non-woven fabric, fiber entanglement consolidation can be achieved through needling, and the non-woven fabric of a sandwich structure is obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of non-woven equipment, and in particular relates to a production device for high-elastic interlayer non-woven fabrics. Background Art

[0002] Sandwich nonwoven fabrics are a type of multi-layer fiber aggregate material consisting of three layers. Generally, two or more raw materials are stacked together to fully demonstrate the performance of each raw material.

[0003] Chinese invention patent CN200410079819.8 discloses a method for producing an elastic nonwoven fabric. A fiber mesh layer is applied to each side of a rubber film, and chemically bonded to the film through a bonding device. Because the interlayer bonding strength of the product is affected by frequency of use and aging, thus affecting its durability, the resulting elastic nonwoven fabric is often used in personal hygiene products such as sanitary napkins, panty liners, and diapers, or as disposable elastic materials for medical purposes. Furthermore, the rubber film is a dense, impermeable material, resulting in poor overall air permeability, failing to achieve the excellent breathability inherent in the nonwoven fabric.

[0004] Chinese invention patent CN201810009597.4 discloses an SMS elastic nonwoven fabric. The SMS elastic nonwoven fabric comprises two outermost spunbond layers, one on top and one on the bottom, and an elastic meltblown layer in the middle. The elastic meltblown layer replaces the elastic film, and the spunbond layer is made of spunbond and elastomer materials. This method solves the product's breathability problem, but the bonding method used still cannot guarantee the product's durability.

[0005] In addition, the above method is to perform three-layer lamination after the non-woven fabric is produced, which greatly increases the production process, wastes raw materials and increases production costs. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a device for producing highly elastic interlayer nonwoven fabrics. The technical solution provided by this utility model not only changes the interlayer connection method of the sandwich structure, but also achieves the integration of three layers during the production of a single-layer nonwoven fabric. This utility model further overcomes the shortcomings of existing equipment in terms of elasticity control, structural stability, production efficiency, and material utilization in the production of highly elastic interlayer nonwoven fabrics.

[0007] The technical solutions provided by this utility model are as follows:

[0008] A high-elastic interlayer non-woven fabric production device comprises a fiber web conveyor belt, a heating device, a needling device, a cooling device and a cloth winding roller which are arranged in sequence, wherein the fiber web conveyor belt has at least three synchronous conveying channels.

[0009] Based on the above technical solution, the fiber entanglement and consolidation can be achieved by needle punching to obtain a non-woven fabric with a sandwich structure.

[0010] Specifically, the fiber web conveyor belt has at least a first channel, a second channel and a third channel. The first channel and the third channel are channels for conveying the first type of fiber web, and the second channel is a channel for conveying the second type of fiber web.

[0011] In the above technical solution, the fiber web conveyor belt is provided with at least three conveying paths, each used to convey the fiber webs delivered from the web laying machine. For example, the middle path conveys spandex fiber webs, while the upper and lower paths convey other fiber webs. The three paths eventually converge to stack the three layers of fiber webs.

[0012] Specifically, the heating device includes a heating roller located in the middle and two first guide rollers located on both sides of the heating roller.

[0013] In the above technical solution, the main function of the heating roller is to heat the fiber web, soften the fibers, and make them easier to slide, so that they can be more easily drawn into the fiber web by the needles, facilitating the subsequent needling process. Secondly, the three-layer fiber web is squeezed during the process of passing through the first guide roller and the heating roller, making the three layers of fiber web fit more closely together, thereby improving the needling effect.

[0014] Specifically, the needling device includes a first needling plate located above the conveying fiber web, and a second needling plate located below the conveying fiber web, and the first needling plate and the second needling plate are arranged front and back along the conveying direction of the fiber web.

[0015] In the above technical solution, the first and second needling plates are staggered vertically, performing needling consolidation separately. For example, when the fiber web enters under the first needling plate, the needles first needle-punch the upper and middle layers of the three-layer web; when the fiber web enters under the second needling plate, the needles first needle-punch the lower and middle layers. This ultimately achieves overall consolidation of the three-layer structure.

[0016] Specifically, the first needling plate is close to the heating device and located above the conveyed fiber web, and the second needling plate is close to the cooling device and located below the conveyed fiber web.

[0017] Optionally, the first needling plate is close to the heating device and located below the conveyed fiber web, and the second needling plate is close to the cooling device and located above the conveyed fiber web.

[0018] Specifically, the angle between the needling direction of the first needling plate and the conveying direction of the fiber web is 75° to 90°.

[0019] Specifically, the angle between the needling direction of the second needling plate and the conveying direction of the fiber web is 75° to 90°.

[0020] Specifically, the cooling device includes a cooling roller located in the middle, and two second guide rollers located on both sides of the cooling roller.

[0021] Specifically, any one of the two second guide rollers is a tensioning wheel, or both of the two second guide rollers are tensioning wheels.

[0022] In the above technical solution, the main function of the cooling roller is to quickly cool the fibers, so that the fibers inside the non-woven fabric after the needle punching are quickly cooled and shrink and harden, thereby achieving fiber shaping and reducing fiber slippage. Secondly, the transmission speed through the cooling roller area is slightly faster than that of the heating roller area, which is 1 to 10% faster. This makes the non-woven fabric in a tensioned state during the needle punching process and does not break, so that the elastic fibers in the middle layer are in a stretched state. When the product comes out of the cooling roller area, the tension disappears and the elastic fibers return to their original length, thus ensuring that the product still has good elasticity. Finally, the distance between the cooling roller and the two second guide rollers can be used to control the thickness of the finished product to ensure the uniformity of the product thickness.

[0023] Specifically, the function of the cloth rolling roller is to roll up the product.

[0024] The high-elastic interlayer non-woven fabric production device provided by the utility model can be operated as follows: the fiber base web is synchronously conveyed through the first channel and the third channel, and the elastic fiber web is synchronously conveyed through the second channel, and the high-elastic interlayer non-woven fabric is obtained through heating, needling, cooling and winding in sequence.

[0025] Specifically, the fiber-based web is a cotton fiber web selected from the prior art.

[0026] Specifically, the elastic fiber net is a spandex fiber net or other elastic fibers selected from the prior art.

[0027] Based on the above technical solution, high-elastic interlayer non-woven fabrics with a variety of material combinations can be produced.

[0028] Specifically, the thickness of each fiber-based web is 5 to 15 mm.

[0029] Specifically, the thickness of the elastic fiber mesh is 5 to 15 mm.

[0030] Specifically, the conveying speed of each fiber web is 0.5 to 2 m / s.

[0031] Specifically, the heating temperature of the heating roller is 80 to 100° C., and the linear speed is 0.5 to 2 m / s.

[0032] Specifically, the density of the single-layer needle punched board is 800-1200 pieces / m, the needle punching frequency is 1800-2200 rpm, and the needle movement degree is 50-60 mm.

[0033] Specifically, the temperature of the cooling roller is 5 to 15° C., the linear speed is 0.5 to 2 m / s, and the gap between the rollers is 5 to 20 mm.

[0034] The beneficial effects of the utility model are as follows:

[0035] 1) The sandwich structure non-woven fabric produced by the utility model adopts a fiber entanglement consolidation method, which belongs to physical consolidation. The bonding method is more firm and reliable, and the product durability is better than chemical bonding;

[0036] 2) The high-elastic interlayer non-woven fabric production device provided by the present invention can be easily installed or integrated into an existing needle punching production line without the need for additional processing steps, which is more efficient and saves production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a high-elastic interlayer non-woven fabric production device provided by the utility model.

[0038] Attachment Figure 1 The structures represented by each number are listed as follows:

[0039] 1. Fiber web conveyor belt, 2. Heating roller, 3. Needling device, 31. First needling plate, 32. Second needling plate, 4. Cooling roller, 5. Cloth winding roller. DETAILED DESCRIPTION

[0040] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0041] Example 1

[0042] like Figure 1 As shown, the production apparatus for a highly elastic interlayer nonwoven fabric comprises a fiber web conveyor belt 1, a heating device, a needling device 3, a cooling device, and a cloth winding roller 5, arranged in sequence. The fiber web conveyor belt 1 has a first channel, a second channel, and a third channel. The first and third channels are both channels for conveying a first type of fiber web, specifically a fiber-based web. The second channel is a channel for conveying a second type of fiber web, specifically an elastic fiber web. Based on this technical solution, a highly elastic interlayer nonwoven fabric can be produced, with a sandwich structure formed by the entangled consolidation of two layers of fiber-based webs, top and bottom, and an elastic fiber web in between.

[0043] Example 2

[0044] On the basis of Example 1, Figure 1 As shown, the heating device includes a central heating roller 2 and two first guide rollers on either side of the heating roller 2. The two first guide rollers are not heated, and the heating rollers 2 are electrically heated water bath heating rollers. This technical solution heats each fiber web, softening the fibers and facilitating their movement.

[0045] Example 3

[0046] On the basis of Examples 1 and 2, Figure 1 As shown, the needling device 3 includes a first needling plate 31 positioned above the conveying fiber web, and a second needling plate 32 positioned below the conveying fiber web. Furthermore, the first needling plate 31 is positioned above the conveying fiber web near the heating device, while the second needling plate 32 is positioned below the conveying fiber web near the cooling device. The needling of the first needling plate 31 forms a 75° angle with the conveying direction of the fiber web. The needling of the second needling plate 32 also forms a 75° angle with the conveying direction of the fiber web.

[0047] In other embodiments, the first needling plate is located near the heating device and below the conveying fiber web, and the second needling plate is located near the cooling device and above the conveying fiber web.

[0048] In other embodiments, the angle between the needling of the first needling plate 31 and the conveying direction of the fiber web can be set to an angle between 75° and 90°, or 90°. The angle between the needling of the second needling plate 32 and the conveying direction of the fiber web can be set to an angle between 75° and 90°, or 90°.

[0049] Based on this technical solution, the fiber webs can be consolidated by needling to form a sandwich structure.

[0050] Example 4

[0051] Based on Examples 1 to 3, Figure 1 As shown, the cooling device includes a cooling roller 4 in the middle and two second guide rollers on both sides of the cooling roller 4. The two second guide rollers are not provided with a cooling function, and the cooling roller 4 is a circulating water bath cooling roller.

[0052] Two second guide rollers are tension wheels.In other embodiments, one of them is set to tension wheel.

[0053] Based on this technical solution, the internal fibers of the non-woven fabric can be quickly cooled after the needling process. The setting of the tensioning wheel can keep the non-woven fabric in a tensioned state during the needling process without breaking.

[0054] High elastic interlayer nonwoven fabric production device produces high elastic interlayer nonwoven fabric, examples are as follows:

[0055] The first and third channels convey a cotton fiber web, each 10mm thick. The second channel conveys a spandex fiber web, also 10mm thick. The three channels eventually converge to form a stack of three webs. The conveying speed of the three webs is 1m / s.

[0056] The heating temperature of the heating roller 2 was 90° C. The line speed was 1 m / s.

[0057] The two needling boards are staggered vertically. The needle angle is 75°, and the density of a single-layer needled board is 1,000 needles / m. The needling frequency is 2,000 rpm, and the needle motion is 55 mm.

[0058] The temperature of the cooling roller 4 was 10° C., the linear speed was 1.1 m / s, and the gap between the rollers was 10 mm.

[0059] The cloth is wound up at the cloth winding roller 5 to obtain a high-elastic interlayer nonwoven fabric, whose elasticity is 30%-50% higher than that of pure cotton nonwoven fabric.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high elastic interlayer non-woven fabric production device, characterized in that: The invention comprises a fiber web conveyor belt (1), a heating device, a needling device (3), a cooling device and a cloth winding roller (5) which are arranged in sequence, wherein the fiber web conveyor belt (1) has at least three synchronous conveying channels.

2. The high-elastic interlayer nonwoven fabric production device according to claim 1, characterized in that: The fiber web conveyor belt (1) has at least a first channel, a second channel and a third channel, the first channel and the third channel are channels for conveying a first type of fiber web, and the second channel is a channel for conveying a second type of fiber web.

3. The high-elastic interlayer nonwoven fabric production device according to claim 2, characterized in that: The heating device comprises a heating roller (2) located in the middle, and two first guide rollers located on both sides of the heating roller (2).

4. The high-elastic interlayer nonwoven fabric production device according to claim 2, characterized in that: The needling device (3) includes a first needling plate (31) located above the conveying fiber web, and a second needling plate (32) located below the conveying fiber web, and the first needling plate (31) and the second needling plate (32) are arranged front and back along the conveying direction of the fiber web.

5. The high-elastic interlayer nonwoven fabric production device according to claim 4, characterized in that: The first needling plate (31) is close to the heating device and is located above the conveyed fiber web, and the second needling plate (32) is close to the cooling device and is located below the conveyed fiber web; Alternatively, the first needling plate is close to the heating device and located below the conveyed fiber web, and the second needling plate is close to the cooling device and located above the conveyed fiber web.

6. The high-elastic interlayer nonwoven fabric production device according to claim 5, characterized in that: The angle between the needles of the first needle punching plate (31) and the conveying direction of the fiber web is 75° to 90°; The angle between the needles of the second needle punching plate (32) and the conveying direction of the fiber web is 75° to 90°.

7. The high elastic interlayer nonwoven fabric production device according to any one of claims 2 to 6, characterized in that: The cooling device comprises a cooling roller (4) located in the middle, and two second guide rollers located on both sides of the cooling roller (4).

8. The high-elastic interlayer nonwoven fabric production device according to claim 7, characterized in that: Any one of the two second guide rollers is a tensioning wheel, or both of the two second guide rollers are tensioning wheels.

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