Papermaking felt for low basis weight specialty paper

Abstract

The utility model belongs to the technical field of papermaking, and particularly relates to a papermaking felt for low basis weight specialty paper, which comprises a front fiber layer, a support fiber net fixedly connected to the bottom of the front fiber layer, an elastic fiber layer fixedly connected to the bottom of the support fiber net, a back fiber layer fixedly connected to the bottom of the elastic fiber layer, and a top fiber layer fixedly connected to the back fiber layer. The front fiber layer comprises a polyester fiber layer, the bottom of the polyester fiber layer is fixedly connected with a natural fiber layer, the bottom of the natural fiber layer is fixedly connected with a non-woven fabric water filtering layer, and the non-woven fabric water filtering layer is fixedly connected to the top of the supporting fiber net. The papermaking felt is reasonable in structural design, not only improves the water filtering performance of the papermaking felt, but also improves the compression resistance, resilience, flatness and wear resistance of the papermaking felt, further improves the quality of low-basis-weight specialty paper preparation, and enables the use effect to be better and the reliability to be high.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to a papermaking blanket for low basis weight specialty paper. Background Technology

[0002] Papermaking felts are a type of special industrial textile, an essential and valuable consumable in the modern papermaking industry. Their quality directly impacts the quality of the paper produced, the efficiency of the papermaking machine, and energy consumption. With the development of papermaking technology, papermaking felts are required to possess characteristics such as high strength, good flatness, good compression resilience, and good dimensional stability. Currently, felts used in the papermaking industry generally include traditional woven felts, ordinary base fabric needle-punched felts, non-weft or sparse weft needle-punched felts, base wire needle-punched felts, non-base fabric needle-punched felts, and seam needle-punched felts.

[0003] However, the papermaking blankets for low basis weight specialty paper in related technologies still have shortcomings. The compressive strength, resilience, flatness and wear resistance of the papermaking blankets are not good and need to be improved, which in turn reduces the quality of low basis weight specialty paper. Therefore, we propose a papermaking blanket for low basis weight specialty paper to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned shortcomings and to propose a papermaking blanket for low basis weight special paper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A papermaking felt for low basis weight specialty paper includes a front fiber layer, a supporting fiber web fixedly connected to the bottom of the front fiber layer, an elastic fiber layer fixedly connected to the bottom of the supporting fiber web, and a back fiber layer fixedly connected to the bottom of the elastic fiber layer.

[0007] As a preferred embodiment of the present invention, the front fiber layer includes a polyester fiber layer, and a natural fiber layer is fixedly connected to the bottom of the polyester fiber layer.

[0008] As a preferred embodiment of this invention, a non-woven fabric filter layer is fixedly connected to the bottom of the natural fiber layer, and the non-woven fabric filter layer is fixedly connected to the top of the supporting fiber web.

[0009] As a preferred embodiment of the present invention, the supporting fiber web includes a plurality of weft threads and a plurality of warp threads, and the supporting fiber web is woven from a plurality of weft threads and a plurality of warp threads.

[0010] As a preferred embodiment of this invention, the weft yarn and the warp yarn are made of the same material, both including nylon fiber and nylon fiber, and the weft yarn is made of nylon fiber and nylon fiber twisted together.

[0011] As a preferred embodiment of this invention, the elastic fiber layer comprises spandex fibers, and a high-elastic sponge is fixedly connected to the bottom of the spandex fibers, with the high-elastic sponge fixedly installed on the top of the back fiber layer.

[0012] In a preferred embodiment of this invention, the spandex fiber is fixedly connected to the bottom of the supporting fiber mesh.

[0013] As a preferred embodiment of the present invention, the back fiber layer includes a liquid crystal polyester fiber layer, and aramid fibers are fixedly connected to the bottom of the liquid crystal polyester fiber layer, and the liquid crystal polyester fiber layer is fixedly connected to the bottom of the high-elastic sponge.

[0014] In this invention, a papermaking blanket for low basis weight specialty paper is described. The polyester fiber layer in the front fiber layer is composed of fine denier fibers and natural fibers (which may be wool) to improve the smoothness and flatness of the contact surface between the blanket and the paper, reduce damage to the paper surface, and facilitate the production of low basis weight specialty paper with high surface quality requirements. The non-woven filter layer has good water filtration performance, resulting in a larger water-holding space in the front fiber layer, thereby improving the water filtration performance of the front fiber layer. Consequently, the papermaking blanket needs to have excellent water filtration performance to quickly remove moisture from the paper, improve production efficiency and paper quality. The supporting fiber web is woven from weft and warp threads, and the weft and warp threads are made of the same material, both being nylon and polyvinyl chloride fibers, which greatly provides high-strength support, while improving flexibility and fatigue resistance, making the blanket less prone to deformation under high pressure, and ensuring uniform dehydration and paper strength uniformity of low basis weight specialty paper during the pressing process.

[0015] In this invention, a papermaking blanket for low basis weight special paper is described. The elastic fiber layer is made of high-elastic sponge and spandex fiber material, which gives the papermaking blanket good recovery elasticity. When the blanket is subjected to pressing pressure, the elastic layer can quickly absorb and disperse the pressure, and quickly return to its original shape after the pressure is released, keeping the water filtration channels of the blanket unobstructed, improving water filtration performance and service life. The back fiber layer is made of aramid fiber and liquid crystal polyester fiber material. Aramid fiber has high strength and wear resistance, while liquid crystal polyester fiber layer has high strength, high modulus and high temperature resistance, which greatly improves the wear resistance and durability of the papermaking blanket, prevents the blanket from being worn and corroded during contact with papermaking machine parts, and extends the service life of the papermaking blanket.

[0016] This utility model has a reasonable structural design, which not only improves the water filtration performance of papermaking blankets, but also improves their compression resistance, resilience, flatness and wear resistance, thereby improving the quality of low basis weight specialty paper preparation, resulting in better performance and high reliability. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of a low basis weight special papermaking blanket proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the front fiber layer of a low basis weight specialty papermaking felt proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the supporting fiber web of a papermaking blanket for low basis weight special paper proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the elastic fiber layer of a low basis weight specialty papermaking blanket proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the back fiber layer of a low basis weight special papermaking blanket proposed in this utility model.

[0022] In the diagram: 1. Front fiber layer; 11. Non-woven filter layer; 12. Natural fiber layer; 13. Polyester fiber layer; 2. Supporting fiber web; 21. Weft; 211. Nylon fiber; 212. Polyester fiber; 22. Warp; 3. Elastic fiber layer; 31. High-elastic sponge; 32. Spandex fiber; 4. Back fiber layer; 41. Aramid fiber; 42. Liquid crystal polyester fiber layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-5 A papermaking blanket for low basis weight specialty paper includes a front fiber layer 1, a supporting fiber web 2 fixedly connected to the bottom of the front fiber layer 1, an elastic fiber layer 3 fixedly connected to the bottom of the supporting fiber web 2, and a back fiber layer 4 fixedly connected to the bottom of the elastic fiber layer 3.

[0025] Furthermore, refer to Figure 1 and Figure 2 As shown, the front fiber layer 1 includes a polyester fiber layer 13, a natural fiber layer 12 is fixedly connected to the bottom of the polyester fiber layer 13, a non-woven filter layer 11 is fixedly connected to the bottom of the natural fiber layer 12, and the non-woven filter layer 11 is fixedly connected to the top of the supporting fiber web 2.

[0026] The above scheme is adopted: the polyester fiber layer 13 and the natural fiber layer 12 (which can be wool) in the front fiber layer 1 form fine denier fibers to improve the fineness and smoothness of the contact surface between the blanket and the paper, reduce damage to the paper surface, and facilitate the production of low basis weight specialty paper with high surface quality requirements. The non-woven filter layer 11 has good water filtration performance, which makes the water holding space in the front fiber layer 1 larger, thereby improving the water filtration performance of the front fiber layer 1. As a result, the papermaking blanket needs to have excellent water filtration performance to quickly remove moisture from the paper and improve production efficiency and paper quality.

[0027] Furthermore, refer to Figure 1 and Figure 3 As shown, the support fiber web 2 includes a number of weft threads 21 and a number of warp threads 22. The support fiber web 2 is woven from a number of weft threads 21 and a number of warp threads 22. The weft threads 21 and the warp threads 22 are made of the same material, both including nylon fiber 211 and nylon fiber 212. The weft threads 21 are made of nylon fiber 211 and nylon fiber 212 twisted together.

[0028] The above scheme is adopted: the support fiber web 2 is woven from weft 21 and warp 22, and the weft 21 and warp 22 are made of the same material, both of which are made of nylon fiber 211 and nylon fiber 212, which greatly provides high-strength support, while improving flexibility and fatigue resistance, so that the blanket is not easily deformed when subjected to high pressure, and ensures uniform dewatering and paper strength uniformity of low basis weight specialty paper during the pressing process.

[0029] Furthermore, refer to Figure 1 and Figure 4 As shown, the elastic fiber layer 3 includes spandex fiber 32, and a high-elastic sponge 31 is fixedly connected to the bottom of the spandex fiber 32. The high-elastic sponge 31 is fixedly installed on the top of the back fiber layer 4, and the spandex fiber 32 is fixedly connected to the bottom of the supporting fiber web 2.

[0030] The above scheme is adopted: the elastic fiber layer 3 is made of high elastic sponge 31 and spandex fiber 32, which makes the papermaking blanket have good recovery elasticity. When the blanket is subjected to pressing pressure, the elastic layer can quickly absorb and disperse the pressure, and quickly return to its original shape after the pressure is released, keeping the water filtration channel of the blanket unobstructed, improving water filtration performance and service life.

[0031] Furthermore, refer to Figure 1 and Figure 5 As shown, the back fiber layer 4 includes a liquid crystal polyester fiber layer 42, and an aramid fiber 41 is fixedly connected to the bottom of the liquid crystal polyester fiber layer 42. The liquid crystal polyester fiber layer 42 is fixedly connected to the bottom of the high-elastic sponge 31.

[0032] The above scheme is adopted: the back fiber layer 4 is made of aramid fiber 41 and liquid crystal polyester fiber layer 42. Aramid fiber 41 has high strength and wear resistance, and liquid crystal polyester fiber layer 42 has high strength, high modulus and high temperature resistance, which greatly improves the wear resistance and durability of papermaking blanket, prevents the blanket from being worn and corroded during contact with papermaking machine parts, and extends the service life of papermaking blanket.

[0033] In this invention, during use, the polyester fiber layer 13 and the natural fiber layer 12 (which can be wool) in the front fiber layer 1 form fine denier fibers to improve the smoothness and flatness of the contact surface between the blanket and the paper, reduce damage to the paper surface, and facilitate the production of low basis weight specialty paper with high surface quality requirements. The non-woven filter layer 11 has good water filtration performance, which makes the water-holding space in the front fiber layer 1 larger, thereby improving the water filtration performance of the front fiber layer 1. As a result, the papermaking blanket needs to have excellent water filtration performance to quickly remove moisture from the paper, improve production efficiency and paper quality.

[0034] The supporting fiber web 2 is woven from weft 21 and warp 22. The weft 21 and warp 22 are made of the same material, both of which are made of nylon fiber 211 and nylon fiber 212. This provides high-strength support, while improving flexibility and fatigue resistance, so that the blanket is not easily deformed when subjected to high pressure, ensuring uniform dehydration and uniform paper strength of low basis weight specialty paper during the pressing process.

[0035] The elastic fiber layer 3 is made of high-elastic sponge 31 and spandex fiber 32, which gives the papermaking felt good recovery elasticity. When the felt is subjected to pressing pressure, the elastic layer can quickly absorb and disperse the pressure, and quickly return to its original shape after the pressure is released, keeping the water filtration channels of the felt unobstructed, improving water filtration performance and service life.

[0036] The back fiber layer 4 is made of aramid fiber 41 and liquid crystal polyester fiber layer 42. Aramid fiber 41 has high strength and wear resistance, while liquid crystal polyester fiber layer 42 has high strength, high modulus and high temperature resistance. This greatly improves the wear resistance and durability of the papermaking blanket, prevents the blanket from being worn and corroded during contact with papermaking machine parts, and extends the service life of the papermaking blanket.

Claims

1. A papermaking felt for low basis weight specialty paper, characterized in that, It includes a front fiber layer (1), a supporting fiber mesh (2) is fixedly connected to the bottom of the front fiber layer (1), an elastic fiber layer (3) is fixedly connected to the bottom of the supporting fiber mesh (2), and a back fiber layer (4) is fixedly connected to the bottom of the elastic fiber layer (3).

2. The papermaking felt for low-basis-weight specialty paper according to claim 1, characterized in that, The front fiber layer (1) includes a polyester fiber layer (13), and a natural fiber layer (12) is fixedly connected to the bottom of the polyester fiber layer (13).

3. The papermaking felt for low-basis-weight specialty paper according to claim 2, characterized in that, The bottom of the natural fiber layer (12) is fixedly connected to a non-woven filter layer (11), which is fixedly connected to the top of the supporting fiber web (2).

4. The papermaking felt for low-basis-weight specialty paper according to claim 1, characterized in that, The supporting fiber web (2) includes a number of weft threads (21) and a number of warp threads (22), and the supporting fiber web (2) is woven from the number of weft threads (21) and the number of warp threads (22).

5. The papermaking felt for low-basis-weight specialty paper according to claim 4, characterized in that, The weft (21) and warp (22) are made of the same material, both including nylon fiber (211) and nylon fiber (212). The weft (21) is made of nylon fiber (211) and nylon fiber (212) twisted together.

6. The papermaking felt for low-basis-weight specialty paper according to claim 1, characterized in that, The elastic fiber layer (3) includes spandex fiber (32), and a high-elastic sponge (31) is fixedly connected to the bottom of the spandex fiber (32). The high-elastic sponge (31) is fixedly installed on the top of the back fiber layer (4).

7. The papermaking felt for low-basis-weight specialty paper according to claim 6, characterized in that, The spandex fiber (32) is fixedly connected to the bottom of the supporting fiber mesh (2).

8. The papermaking felt for low basis weight specialty paper according to claim 1, characterized in that, The back fiber layer (4) includes a liquid crystal polyester fiber layer (42), and an aramid fiber (41) is fixedly connected to the bottom of the liquid crystal polyester fiber layer (42). The liquid crystal polyester fiber layer (42) is fixedly connected to the bottom of the high-elastic sponge (31).

Images