Multi-layer warp and weft interwoven papermaking felt

Abstract

The utility model discloses a multi-layer warp and weft interwoven papermaking felt, which belongs to the technical field of papermaking felt, and is characterized by comprising a papermaking felt main body, the papermaking felt main body comprises a bottom base cloth layer, the bottom of the bottom base cloth layer is provided with a back layer, and the top of the bottom base cloth layer is provided with a surface fiber layer; the bottom base cloth layer comprises an upper base cloth layer, a middle base cloth layer and a bottom base cloth layer, and the bottom base cloth layer, the middle base cloth layer and the upper base cloth layer are sequentially stacked; the surface fiber layer comprises an upper-layer fiber layer, a middle-layer fiber layer and a bottom-layer fiber layer, and elastic layers are arranged at the top and the bottom of the middle-layer fiber layer, so that the problems that an existing conventional papermaking felt is poor in rebound resilience, not beneficial to the wet paper squeezing and dewatering process, poor in strength and short in service cycle are solved; the production efficiency of the paper machine is low due to multiple times of shutdown, so that the use effect is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking felts, in particular to a multi-layer warp and weft interlaced papermaking felt. Background Art

[0002] Papermaking felt refers to the fabric felt used for paper forming and conveying in the papermaking industry. It can be divided into wet felt, upper felt and dry felt according to its position on the papermaking machine.

[0003] However, the existing conventional papermaking felts have poor resilience, which is not conducive to the wet paper pressing and dehydration process. In addition, they have poor strength and a short service life, which causes multiple shutdowns and low production efficiency of the papermaking machine. Utility Model Content

[0004] The utility model provides a multi-layer warp and weft interlaced papermaking felt, aiming to solve the problem that the existing conventional papermaking felt has poor resilience, is not conducive to the wet paper pressing and dehydration process, has poor strength, and has a short service life, resulting in multiple shutdowns and low production efficiency of the papermaking machine, thus affecting the use effect.

[0005] The utility model is implemented as follows: a multi-layer warp and weft interlaced papermaking felt comprises a papermaking felt body, wherein the papermaking felt body comprises a bottom base fabric layer, a back layer is arranged at the bottom of the bottom base fabric layer, and a surface fiber layer is arranged at the top of the bottom base fabric layer;

[0006] The bottom base fabric layer comprises an upper base fabric layer, a middle base fabric layer and a bottom base fabric layer, and the bottom base fabric layer, the middle base fabric layer and the upper base fabric layer are stacked in sequence;

[0007] The surface fiber layer comprises an upper fiber layer, a middle fiber layer and a bottom fiber layer, and elastic layers are arranged on the top and bottom of the middle fiber layer, and the elastic layer is connected to the upper fiber layer and the bottom fiber layer on one side close to the upper fiber layer and the bottom fiber layer respectively.

[0008] In order to achieve the effect of improving the strength of the bottom base fabric layer, a multi-layer warp and weft interwoven papermaking blanket is preferably used in the present invention. The upper base fabric layer and the bottom base fabric layer are both warp and weft interwoven into a mesh structure, and the warp and weft are composed of polyester fibers and nylon fibers respectively.

[0009] In order to achieve the effect of enhancing the elasticity of the surface fiber layer, as a preferred multi-layer warp and weft interlaced papermaking felt of the utility model, the elastic layer is composed of polyurethane fibers and is arranged in an integrated grid structure.

[0010] In order to achieve the effect of enhancing the wear resistance of the back side of the papermaking felt body, as a preferred multi-layer warp and weft interwoven papermaking felt of the utility model, the back side layer is composed of long nylon fibers and is arranged at the bottom of the bottom base fabric layer.

[0011] In order to achieve the effect of improving the wear resistance and high strength of the papermaking felt body, as a preferred multi-layer warp and weft interwoven papermaking felt of the utility model, the upper fiber layer is composed of a mesh layer composed of wool and short nylon fibers combed into a mesh.

[0012] In order to achieve the effect of the upper base fabric layer and the bottom base fabric layer, as a preferred multi-layer warp and weft interwoven papermaking blanket of the utility model, multiple weft threads are alternately wrapped around one or more warp threads in a zigzag shape, and the warp threads and weft threads are both single fiber twisted yarns or multiple twisted fiber twisted yarns.

[0013] In order to ensure the connection strength between the multi-layer structure of the papermaking felt main body and to ensure the flatness, a multi-layer warp and weft interwoven papermaking felt is preferably used in the utility model, in which the bottom base cloth layer, the back layer and the surface fiber layer are connected by needle punching.

[0014] In order to achieve the effect of improving the use strength of the middle fiber layer and the bottom fiber layer, as a preferred multi-layer warp and weft interwoven papermaking felt of the utility model, the middle fiber layer and the bottom fiber layer are both made of polypropylene fibers.

[0015] In order to achieve the effect of improving the durability and strength of the middle base fabric layer, as a preferred multi-layer warp and weft interwoven papermaking felt of the utility model, the middle base fabric layer is made of acrylic fiber.

[0016] In order to achieve the effect of improving the connection strength between the bottom base fabric layer structures, as a preferred multi-layer warp and weft interwoven papermaking felt of the utility model, the upper base fabric layer, the middle base fabric layer and the bottom base fabric layer are formed by heat setting.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The multi-layer warp and weft interwoven papermaking felt is constructed by arranging a surface fiber layer composed of an upper fiber layer, a middle fiber layer, a bottom fiber layer and an elastic layer. The elastic layer has good elasticity, so that the papermaking felt body can have good rebound during the wet paper pressing and dehydration process, thereby ensuring the use effect of the papermaking felt body. At the same time, by arranging a bottom base fabric layer including an upper base fabric layer, a middle base fabric layer and a bottom base fabric layer, the overall strength of the papermaking felt body can be enhanced, so that the use strength of the papermaking felt body is improved, thereby extending the use cycle. In addition, by setting the back layer, the contact surface between the papermaking felt body and the machine has good wear resistance, which slows down its wear rate, thereby ensuring the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of the multi-layer warp and weft interlaced papermaking felt of the utility model;

[0020] Figure 2 It is an exploded schematic diagram of the main body of the papermaking felt in the utility model;

[0021] Figure 3 This is an exploded schematic diagram of the bottom base fabric layer in the utility model;

[0022] Figure 4 It is a schematic diagram of the decomposition of the surface fiber layer in the utility model;

[0023] Figure 5 This is a schematic diagram of the connection of the warp and weft fibers in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the elastic layer in the utility model.

[0025] In the figure, 1, papermaking felt body; 2, bottom base fabric layer; 201, upper base fabric layer; 202, middle base fabric layer; 203, bottom base fabric layer; 3, back layer; 4, surface fiber layer; 401, upper fiber layer; 402, middle fiber layer; 403, bottom fiber layer; 404, elastic layer. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] See also Figure 1-6 The utility model provides a technical solution: a multi-layer warp and weft interlaced papermaking felt, comprising a papermaking felt body 1, the papermaking felt body 1 comprising a bottom base fabric layer 2, a back layer 3 is arranged at the bottom of the bottom base fabric layer 2, and a surface fiber layer 4 is arranged at the top of the bottom base fabric layer 2;

[0029] The bottom base fabric layer 2 comprises an upper base fabric layer 201, a middle base fabric layer 202 and a bottom base fabric layer 203, wherein the bottom base fabric layer 203, the middle base fabric layer 202 and the upper base fabric layer 201 are stacked in sequence;

[0030] The surface fiber layer 4 is composed of an upper fiber layer 401, a middle fiber layer 402 and a bottom fiber layer 403, and elastic layers 404 are provided on the top and bottom of the middle fiber layer 402, and the elastic layer 404 is connected to the upper fiber layer 401 and the bottom fiber layer 403 on one side thereof close to the upper fiber layer 401 and the bottom fiber layer 403 respectively.

[0031] In this embodiment: by setting the surface fiber layer 4 to be composed of an upper fiber layer 401, a middle fiber layer 402, a bottom fiber layer 403 and an elastic layer 404, the elastic layer 404 has good elasticity, so that the papermaking felt body 1 can have good rebound during the wet paper pressing and dehydration process, thereby ensuring the use effect of the papermaking felt body 1, and at the same time, by setting the bottom base fabric layer 2 including the upper base fabric layer 201, the middle base fabric layer 202 and the bottom base fabric layer 203, the overall strength of the papermaking felt body 1 can be enhanced, so that the use strength of the papermaking felt body 1 is improved, thereby extending the use cycle, and through the setting of the back layer 3, the contact surface between the papermaking felt body 1 and the machine has good wear resistance, slowing down its wear rate, thereby ensuring the service life.

[0032] As a technical optimization solution of the utility model, the upper base fabric layer 201 and the bottom base fabric layer 203 are both a network structure in which the warp and weft threads are interwoven, and the warp and weft threads are respectively composed of polyester fibers and nylon fibers.

[0033] In this embodiment: by arranging the upper base fabric layer 201 and the bottom base fabric layer 203 to be a mesh structure in which warp and weft threads are interwoven, the bottom base fabric layer 2 can be strong, wear-resistant and stiff, thereby improving the usability of the papermaking felt main body 1, and by arranging the warp and weft threads to be composed of polyester fibers and nylon fibers respectively, the papermaking felt main body 1 can be endowed with good wear resistance, elasticity and strength, thereby improving the structural strength and elasticity of the papermaking felt main body 1.

[0034] As a technical optimization solution of the present invention, the elastic layer 404 is made of polyurethane fibers and is arranged in an integrated grid structure.

[0035] In this embodiment: by setting the elastic layer 404 to be composed of polyurethane fibers and setting an integrated grid structure, the surface fiber layer 4 has good resilience, so that the papermaking felt body 1 can have good rebound during the wet paper pressing and dehydration process, thereby ensuring the use effect of the papermaking felt body 1.

[0036] As a technical optimization solution of the present invention, the back layer 3 is made of long nylon fibers and is arranged at the bottom of the bottom base fabric layer 203 .

[0037] In this embodiment, by setting the back layer 3 to be composed of long nylon fibers, the contact surface between the papermaking felt body 1 and the machine has good wear resistance, slowing down its wear rate, thereby ensuring the service life.

[0038] As a technical optimization solution of the utility model, the upper fiber layer 401 is composed of a web layer formed by combing wool and short nylon fibers.

[0039] In this embodiment, by arranging the upper fiber layer 401 to be composed of a web layer of wool and short nylon fibers combed into a web, the papermaking felt body 1 can be made to have the advantages of being wear-resistant, high in strength and having a long service life.

[0040] As a technical optimization solution of the utility model, a plurality of weft threads are alternately wound around one or more warp threads in a zigzag shape, and the warp threads and weft threads are single fiber twisted yarns or multi-twisted fiber twisted yarns.

[0041] In this embodiment, by arranging a plurality of weft threads to alternately pass around one or more warp threads in a zigzag shape, the fabric can have good tightness and structural stability.

[0042] As a technical optimization solution of the present invention, the bottom base fabric layer 2, the back layer 3 and the surface fiber layer 4 are connected by needle punching.

[0043] In this embodiment, the bottom base fabric layer 2, the back layer 3 and the surface fiber layer 4 are connected by needle punching, so that a certain degree of tightness and flatness can be achieved among the three.

[0044] As a technical optimization solution of the present invention, the middle fiber layer 402 and the bottom fiber layer 403 are both made of polypropylene fibers.

[0045] In this embodiment, by arranging that the middle fiber layer 402 and the bottom fiber layer 403 are both made of polypropylene fibers, the middle fiber layer 402 and the bottom fiber layer 403 can have high strength and wear resistance.

[0046] As a technical optimization solution of the present invention, the middle base fabric layer 202 is made of acrylic fiber.

[0047] In this embodiment, by setting the middle base fabric layer 202 to be made of acrylic fiber, the durability of the middle base fabric layer 202 can be improved.

[0048] As a technical optimization solution of the present invention, the upper base fabric layer 201, the middle base fabric layer 202 and the bottom base fabric layer 203 are formed by heat setting.

[0049] In this embodiment, by heat setting the upper base fabric layer 201, the middle base fabric layer 202 and the bottom base fabric layer 203, the internal stress of the fiber can be eliminated, the dimensional stability of the fiber can be improved, and the physical and mechanical properties of the bottom base fabric layer 203 can be further improved.

[0050] Working principle: The surface fiber layer 4 is composed of an upper fiber layer 401, a middle fiber layer 402, a bottom fiber layer 403 and an elastic layer 404. The elastic layer 404 has good elasticity, so that the papermaking felt body 1 can have good rebound during the wet paper pressing and dehydration process, thereby ensuring the use effect of the papermaking felt body 1. At the same time, by setting the bottom base fabric layer 2 including the upper base fabric layer 201, the middle base fabric layer 202 and the bottom base fabric layer 203, the overall strength of the papermaking felt body 1 can be enhanced, so that the use strength of the papermaking felt body 1 is improved, thereby extending the service life, and through the setting of the back layer 3, the contact surface between the papermaking felt body 1 and the machine has good wear resistance, which slows down its wear rate, thereby ensuring the service life.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-layered warp and weft interlaced papermaking felt, comprising a papermaking felt body (1), characterized in that: The papermaking felt body (1) comprises a bottom base fabric layer (2), a back layer (3) is arranged at the bottom of the bottom base fabric layer (2), and a surface fiber layer (4) is arranged at the top of the bottom base fabric layer (2); The bottom base fabric layer (2) comprises an upper base fabric layer (201), a middle base fabric layer (202) and a bottom base fabric layer (203), and the bottom base fabric layer (203), the middle base fabric layer (202) and the upper base fabric layer (201) are stacked in sequence; The surface fiber layer (4) comprises an upper fiber layer (401), a middle fiber layer (402) and a bottom fiber layer (403), and elastic layers (404) are arranged on the top and bottom of the middle fiber layer (402), and the elastic layer (404) is connected to the upper fiber layer (401) and the bottom fiber layer (403) on one side thereof close to the upper fiber layer (401) and the bottom fiber layer (403), respectively.

2. A multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The upper base fabric layer (201) and the bottom base fabric layer (203) are both mesh structures formed by interweaving warp and weft threads, and the warp and weft threads are respectively composed of polyester fibers and nylon fibers.

3. A multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The elastic layer (404) is made of polyurethane fibers and is arranged in an integrated grid structure.

4. A multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The back layer (3) is made of long nylon fibers and is arranged at the bottom of the bottom base fabric layer (203).

5. The multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The upper fiber layer (401) is composed of a web layer formed by combing wool and short nylon fibers.

6. A multi-layer warp and weft interlaced papermaking felt according to claim 2, characterized in that: A plurality of weft threads are alternately wound around one or more warp threads in a zigzag shape, and the warp threads and weft threads are both single fiber twisted yarns or multi-twisted fiber twisted yarns.

7. The multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The bottom base fabric layer (2), the back layer (3) and the surface fiber layer (4) are connected by needle punching.

8. The multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The middle fiber layer (402) and the bottom fiber layer (403) are both made of polypropylene fibers.

9. The multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The middle base fabric layer (202) is made of acrylic fibers.

10. The multi-layer warp and weft interlaced papermaking felt according to claim 1, characterized in that: The upper base fabric layer (201), the middle base fabric layer (202) and the bottom base fabric layer (203) are formed by heat setting.

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