High-density closed felt structure

Abstract

The utility model discloses a high-density closed felt structure which comprises a flannelette surface layer, a flannelette core layer, a flannelette bottom layer, a first base cloth layer and a second base cloth layer, the first base cloth layer comprises first warp yarns, second warp yarns and first weft yarns; third weft yarns corresponding to the first warp yarns in the first base cloth layer and the second base cloth layer are arranged in the flannelette core layer; flannelette water absorption cavities are formed among the first weft yarns, the second weft yarns and the third weft yarns; the high-density base cloth layer is formed by the first warp yarns, the second weft yarns and the first weft yarns of the first base cloth layer and the second base cloth layer, so that more water can seal gaps of the coarse cotton cloth, the coarse cotton cloth is more closed and airtight, the vacuum degree of vacuum equipment is conveniently kept during vacuum dewatering, dewatering of the coarse cotton cloth is more sufficient, the dryness of the coarse cotton cloth is improved, and the service life of the coarse cotton cloth is prolonged. And flannelette water absorption cavities are formed among the first weft yarns, the second weft yarns and the third weft yarns, so that the water absorption capacity is effectively improved, and the dryness of the paper sheet is improved.

Description

A high-density closed-loop fabric structure Technical Field

[0001] This utility model relates to the field of papermaking felt, specifically to a high-density closed felt structure. Background Technology

[0002] The lower the basis weight of the finished paper, the more cartons can be produced from the same weight of paper, making lightweight finished paper increasingly promising in the market. During dewatering in the press section, the water is first squeezed out of the paper by the press rollers, then transferred to the felt. As the felt moves, it reaches the felt's absorbent box, where the vacuum effect dries the water and carries it away, allowing the felt to dry. The felt then continues its journey into the next cycle.

[0003] When producing thin paper, the absolute amount of water in a paper web with the same moisture content will be much less. If a felt with the same air permeability is used, due to the reduction in the absolute amount of water, the gaps in the felt cannot be sealed by water. The vacuum of the felt will draw in a large amount of air, instead of using the vacuum to draw in the moisture in the felt. This results in the felt being drier when the same vacuum is used, and ultimately the paper web having a higher moisture content. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a high-density closed-loop fabric structure to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a high-density closed fleece structure, including a fleece surface layer, a fleece core layer, a fleece bottom layer, a first base fabric layer, and a second base fabric layer; the first base fabric layer includes a first warp yarn, a second warp yarn, and a first weft yarn; the first warp yarn and the second weft yarn, which are arranged in pairs, are spaced apart; the first weft yarn passes through the first warp yarn and the second warp yarn in sequence, and the structure of the second base fabric layer is the same as that of the first base fabric layer; a third weft yarn is arranged in the fleece core layer corresponding to the first warp yarn in the first base fabric layer and the second base fabric layer; a fleece absorbent cavity is formed between the first weft yarn, the second weft yarn, and the third weft yarn.

[0006] Preferably, the first warp yarn is a nylon filament high-twist five-ply yarn.

[0007] Preferably, the second warp yarn is a nylon filament high-twist three-ply yarn or a nylon filament high-twist four-ply yarn.

[0008] Preferably, the third warp yarn is a nylon filament high-twist three-ply yarn or a nylon filament high-twist four-ply yarn.

[0009] Preferably, reinforcing weft threads are also interwoven between the first base fabric layer, the second base fabric layer, and the fleece core layer.

[0010] Preferably, the fleece surface layer, fleece core layer, and fleece bottom layer are made of copolymer fiber flocking.

[0011] The main technical effects of this utility model are as follows: the high-density base fabric layer, composed of the first warp yarn, the second weft yarn, and the first weft yarn of the first and second base fabric layers, facilitates the sealing of more moisture in the gaps of the felt, making the felt more sealed and airtight. This helps maintain the vacuum level of the vacuum equipment during vacuum dehydration, and the felt is dehydrated more thoroughly, improving the dryness of the felt. Furthermore, the water absorption cavity formed between the first weft yarn, the second weft yarn, and the third weft yarn effectively increases the water absorption and improves the dryness of the paper. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the hierarchical structure of this utility model;

[0013] Figure 2 is a schematic diagram of the setting of reinforced latitude lines.

[0014] The attached diagram is labeled as follows: 1-fleece outer layer, 2-fleece core layer, 21-third weft yarn, 3-fleece bottom layer, 4-first base fabric layer, 41-first warp yarn, 42-second warp yarn, 43-first weft yarn, 5-second base fabric layer, 6-fleece absorbent cavity, 7-reinforcing weft yarn. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0016] In this embodiment, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0017] Furthermore, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art. Therefore, it will not be described in detail in this embodiment.

[0018] This utility model provides a high-density closed-loop fleece structure, as shown in Figures 1-2, including a fleece surface layer 1, a fleece core layer 2, a fleece bottom layer 3, a first base fabric layer 4, and a second base fabric layer 5. The first base fabric layer 4 includes a first warp yarn 41, a second warp yarn 42, and a first weft yarn 43. The first warp yarn 41 and the second weft yarn, which are arranged in pairs, are spaced apart. The first weft yarn 43 passes through the first warp yarn 41 and the second warp yarn 42 in sequence. The structure of the second base fabric layer 5 is the same as that of the first base fabric layer 4. The fleece core layer 2 contains the first warp yarns 41 and 42 corresponding to those in the first base fabric layer 4 and the second base fabric layer 5. 1. A third weft yarn 21 is provided; a fleece absorbent cavity 6 is formed between the first weft yarn 43, the second weft yarn and the third weft yarn 21. The first warp yarn 41, the second weft yarn and the first weft yarn of the first base fabric layer 4 and the second base fabric layer 5 form a high-density base fabric layer, which facilitates more moisture to seal the gaps of the fleece, making the fleece more sealed and airtight. This helps to maintain the vacuum level of the vacuum equipment during vacuum dehydration, and the fleece is dehydrated more thoroughly, improving the dryness of the fleece. The fleece absorbent cavity 6 formed between the first weft yarn 43, the second weft yarn and the third weft yarn 21 also effectively increases the water absorption and improves the dryness of the paper.

[0019] Preferably, the first warp yarn 41 is a nylon filament high-twist five-ply yarn. Preferably, the second warp yarn 42 is a nylon filament high-twist three-ply yarn or a nylon filament high-twist four-ply yarn. Preferably, the third warp yarn is a nylon filament high-twist three-ply yarn or a nylon filament high-twist four-ply yarn.

[0020] Preferably, reinforcing weft threads 7 are also threaded between the first base fabric layer 4, the second base fabric layer 5 and the fleece core layer 2, which helps to improve the stability between the first base fabric layer 4, the second base fabric layer 5 and the fleece core layer 2, thereby helping to avoid damage or layer displacement during the pressing and water absorption process.

[0021] Preferably, the fleece surface layer 1, fleece core layer 2, and fleece bottom layer 3 are made of copolymer fiber flocking. Compared with ordinary limited flocking, the amount of fiber used in copolymer fiber flocking makes the fleece less breathable, and the fleece air permeability decreases from 69-75 CFM to 58-65 CFM. The fleece is more sealed, the vacuum rises faster, and it is easier to absorb the moisture in the fleece, which improves the fleece dryness and thus improves the dryness of the paper sheet exiting the pressing section.

[0022] The main technical effects of this utility model are as follows: the high-density base fabric layer, composed of the first warp yarn, the second weft yarn, and the first weft yarn of the first and second base fabric layers, facilitates the sealing of more moisture in the gaps of the felt, making the felt more sealed and airtight. This helps maintain the vacuum level of the vacuum equipment during vacuum dehydration, and the felt is dehydrated more thoroughly, improving the dryness of the felt. Furthermore, the water absorption cavity formed between the first weft yarn, the second weft yarn, and the third weft yarn effectively increases the water absorption and improves the dryness of the paper.

[0023] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A high density closed loop pile fabric structure characterized by, The fabric includes a fleece outer layer, a fleece core layer, a fleece bottom layer, a first base fabric layer, and a second base fabric layer. The first base fabric layer includes a first warp yarn, a second warp yarn, and a first weft yarn. The first warp yarn and the second weft yarn, which are arranged in pairs, are spaced apart. The first weft yarn passes through the first warp yarn and the second warp yarn in sequence. The structure of the second base fabric layer is the same as that of the first base fabric layer. A third weft yarn is provided in the fleece core layer corresponding to the first warp yarn in the first base fabric layer and the second base fabric layer. A fleece absorbent cavity is formed between the first weft yarn, the second weft yarn, and the third weft yarn.

2. A high density closed pile fabric structure according to claim 1, wherein, The first warp yarn is a nylon filament high-twist five-ply yarn.

3. A high density closed pile fabric structure according to claim 1, wherein, The second warp yarn is a nylon filament high-twist three-ply yarn or a nylon filament high-twist four-ply yarn.

4. The high-density closed-loop felt structure as described in claim 1, characterized in that, The third warp yarn is a nylon filament high-twist three-ply yarn or a nylon filament high-twist four-ply yarn.

5. A high-density closed-loop felt structure as described in claim 1, characterized in that, Reinforcing weft threads are also threaded between the first base fabric layer, the second base fabric layer, and the fleece core layer.

6. The high-density closed-loop felt structure as described in claim 1, characterized in that, The outer layer, core layer, and bottom layer of the fleece are made of copolymer fiber flocking.

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