CN110952367A - Novel special forming wire for household paper and papermaking equipment - Google Patents
Novel special forming wire for household paper and papermaking equipment Download PDFInfo
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- CN110952367A CN110952367A CN201911275778.2A CN201911275778A CN110952367A CN 110952367 A CN110952367 A CN 110952367A CN 201911275778 A CN201911275778 A CN 201911275778A CN 110952367 A CN110952367 A CN 110952367A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/10—Wire-cloths
Abstract
The invention relates to a novel forming net special for household paper, which comprises a paper forming layer, a connecting layer and a machine layer, wherein the connecting layer is used for connecting the paper forming layer and the machine layer, the paper forming layer is formed by paper forming layer warps and paper forming layer wefts through a plain weaving method, and the machine layer is formed by weaving the machine layer warps and the machine layer wefts through a 4-harness satin weaving method; the number of the paper-forming layer warps is larger than that of the machine layer warps, and the number of the paper-forming layer wefts is larger than that of the machine layer wefts. The invention improves the fiber support index of the forming net and the fiber retention rate of the household paper; in addition, the forming net is more compact in structure and enhanced in stability, and the service life is further prolonged; meanwhile, the forming wire improves the dewatering efficiency to meet the production requirement of high-speed papermaking equipment.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to a novel forming net special for household paper and papermaking equipment.
Background
The papermaking forming wire is an important forming and dewatering structure of a wet part of papermaking equipment, and the commonly used papermaking forming wires comprise a single-layer forming wire, a double-layer forming wire, a two-layer semi-forming wire and a three-layer forming wire, wherein the three-layer forming wire is the commonly used papermaking forming wire at present.
In the long-term research process, the existing forming wire special for the domestic paper can basically complete the paper forming and dewatering tasks, but has the defects of poor stability and low fiber support index of a paper forming layer, so that the fiber retention rate of the domestic paper is low. And with the continuous improvement of the speed of the papermaking equipment, the existing forming wire has poor stiffness, slow dehydration and short service life and is difficult to meet the production requirement of the papermaking equipment with high speed.
Therefore, in order to solve the above problems, a new forming wire and a new papermaking device special for the household paper need to be designed.
Disclosure of Invention
In order to achieve the purpose, the invention provides a novel forming net special for household paper, which comprises a paper forming layer, a connecting layer and a machine layer, wherein the connecting layer is used for connecting the paper forming layer and the machine layer, the paper forming layer is formed by paper forming layer warps and paper forming layer wefts through a plain weaving method, and the machine layer is formed by weaving the machine layer warps and the machine layer wefts through a 4-harness satin weaving method; the number of the paper-forming layer warps is larger than that of the machine layer warps, and the number of the paper-forming layer wefts is larger than that of the machine layer wefts.
As a further improvement of the invention, the number ratio of the paper-forming layer warp threads to the machine layer warp threads is 3: 2.
As a further development of the invention, the number ratio of the paper-forming layer weft threads to the machine layer weft threads is 2: 1.
As a further development of the invention, the number of connecting wefts of the connecting layer is 1/2 of the total number of wefts of the forming wire.
As a further improvement of the invention, the diameter of the warp of the paper-forming layer is 0.09-0.11mm, and the diameter of the weft of the paper-forming layer is 0.10-0.12 mm; the diameter of the warp threads of the machine layer is 0.23-0.27mm, and the diameter of the weft threads of the machine layer is 0.23-0.27 mm.
As a further improvement of the invention, the forming net is formed by weaving 20 heald frames, and the forming net comprises a plurality of minimum tissue units, and the minimum tissue units comprise 20 warps composed of polyester monofilaments and 32 wefts composed of polyester monofilaments or nylon monofilaments.
As a further improvement of the invention, the warp density of the forming net is 65 pieces/cm, and the weft density of the forming net is 62-68 pieces/cm.
As a further improvement of the present invention, the connecting wefts of the connecting layer include a first connecting weft and a second connecting weft which are paired and sewn to each other, the first connecting weft is interwoven with the paper-making layer warps, and the second connecting weft is interwoven with the machine layer warps, thereby connecting the paper-making layer with the machine layer; and the diameters of the first connecting weft and the second connecting weft are 0.10-0.12 mm.
As a further improvement of the invention, the paper-forming layer warp yarns, the paper-forming layer weft yarns, the machine layer warp yarns and the machine layer weft yarns are all made of polyester monofilaments, and the connecting weft yarns of the connecting layer are made of nylon monofilaments.
The invention also provides papermaking equipment comprising the forming wire.
Compared with the prior art, the invention has the beneficial effects that:
(1) the paper forming layer of the invention adopts the plain weave weaving method, improves the fiber support index of the forming net, the net surface is finer and smoother, and simultaneously improves the fiber retention rate of the household paper, and the paper industry is formed more uniformly.
(2) The machine layer of the invention adopts a 4-harness satin weaving method, so that the forming net has a more compact structure and enhanced stability, and the service life is further prolonged.
(3) On one hand, the number of the paper layer warps and the machine layer warps is reasonably set, so that the paper layer warps are thinner, the density is higher, and the machine layer warps are thicker, and the dehydration efficiency is improved to meet the production requirement of high-speed papermaking equipment; on the other hand is through the quantity that rationally sets to ply weft and machine layer weft for the thickness of forming wire is thinner, thereby reduces the water content and in order to improve dehydration rate, and the while becomes the ply and also more level and more smooth.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic diagram of a weave pattern of a minimum tissue unit in an embodiment of the novel forming wire for the household paper of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the weft yarn distribution knitting of the 1 st to 12 th of the smallest organization unit in FIG. 1;
FIG. 3 is a schematic structural view of an embodiment of the weft yarn distribution knitting of 13 th to 24 th of the smallest organization unit in FIG. 1;
FIG. 4 is a schematic structural view of an embodiment of the weft yarn distribution weaving of the 25 th to the 32 th of the smallest tissue unit in FIG. 1;
FIG. 5 is a schematic structural view of an embodiment of the papermaking apparatus of the present invention;
100-forming a web; 200-a papermaking device; 1-forming a paper layer; 11-warp threads of a paper-forming layer; 12-paper layer weft; 2-a tie layer; 21-connecting weft; 211-a first connecting weft; 212-a second connecting weft; 3-machine layer; 31-machine layer warp; 32-machine layer weft.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Referring to fig. 1-5, the invention provides a novel forming net 100 special for household paper, which comprises a paper forming layer 1, a connecting layer 2 and a machine layer 3. Wherein, the connecting layer 2 is used for connecting the paper layer 1 and the machine layer 3.
Specifically, the paper-making layer 1 is formed by plain weaving of the paper-making layer warp 11 and the paper-making layer weft 12, and the machine layer 3 is formed by weaving of the machine layer warp 31 and the machine layer weft 32 by 4-harness satin weaving; wherein, the number of the paper-making layer warp threads 11 is larger than that of the machine layer warp threads 31, and the number of the paper-making layer weft threads 12 is larger than that of the machine layer weft threads 32.
Therefore, the paper forming layer 1 of the invention adopts a plain weave weaving method, improves the fiber support index of the forming net 100, the net surface is finer and smoother, and simultaneously improves the fiber retention rate of the household paper, and the paper industry is formed more uniformly; in addition, the machine layer 3 of the invention adopts a 4-harness satin weaving method, so that the forming net 100 has a tighter structure and enhanced stability, and the service life is further prolonged. In addition, on one hand, the number of the paper layer warps 11 and the number of the machine layer warps 31 are reasonably set, so that the paper layer warps 11 are thinner and have higher density, and the machine layer warps 31 are thicker, so that the dehydration efficiency is improved to meet the production requirements of high-speed papermaking equipment; on the other hand, by properly setting the number of layer wefts 12 and machine layer wefts 32, the thickness of the forming wire 100 is made thinner, thereby reducing the water content to increase the dewatering speed, and the paper layer 1 is also made smoother.
Further, the connecting wefts 21 of the connecting layer 2 include a first connecting weft 211 and a second connecting weft 212 which are paired and sewn to each other, the first connecting weft 211 is interwoven with the paper-making layer warps 11, and the second connecting weft 212 is interwoven with the machine layer warps 31, thereby connecting the paper-making layer 1 with the machine layer 3. By the above connection manner, the first connecting wefts 211 and the second connecting wefts 212 of the connecting layer 2 connect the paper-forming layer 1 and the machine layer 3, so that the paper-forming layer 1 and the machine layer 3 are combined more firmly. Of course, in other embodiments of the invention, the first connecting weft thread 211 may also be interwoven with the machine layer warp thread 31, while the second connecting weft thread 212 is interwoven with the paper-making layer warp thread 11, which also achieves the effect of connecting the paper-making layer 1 with the machine layer 3.
In particular, the number of connecting wefts 21 of connecting layer 2 is 1/2 of the total number of wefts of forming wire 100. And, the diameter of the first connecting weft 211 and the second connecting weft 212 is 0.10-0.12mm, for example, 0.10mm, 0.11mm, 0.12mm, etc.
In a preferred embodiment of the invention, the number ratio of the paper-forming layer warp threads 11 to the machine layer warp threads 31 is 3: 2. The warp threads 11 of the paper-forming layer in the proportion are thinner and have higher density; in contrast, the machine layer warp 31 is thicker, and the dewatering speed is further accelerated on the basis of improving the fiber retention rate.
Further, in order to further increase the dewatering speed, the number ratio of the paper-forming layer weft 12 to the machine layer weft 32 is preferably 2: 1. The forming wire 100 in this ratio is of reasonable structure, thinner thickness and less moisture content; meanwhile, the paper forming layer 1 arranged below is smoother.
Note that, since the first connecting weft 211 and the second connecting weft 212 in the connecting layer 2 of the present invention are both wefts, the first connecting weft 211 and the second connecting weft 212 arranged in a pair in the connecting layer 2 correspond to one paper-making layer weft 12 in the field of paper making technology. Therefore, in the above-mentioned number ratio of the paper-making layer weft yarns 12 to the machine layer weft yarns 32, the number of the paper-making layer weft yarns 12 includes the number of the first connecting weft yarns 211 and the second connecting weft yarns 212 of the connecting layer 2.
In addition, in one embodiment, the diameter of the paper-forming layer warp 11 is 0.09-0.11mm, such as 0.09mm, 0.10mm, 0.11mm, etc.; the diameter of the paper-forming layer weft 12 is 0.10-0.12mm, such as 0.10mm, 0.11mm, 0.12mm and the like; the machine layer warp 31 has a diameter of 0.23-0.27mm, such as 0.23mm, 0.25mm, 0.27mm, etc.; the machine layer weft 32 has a diameter of 0.23-0.27mm, such as 0.23mm, 0.25mm, 0.27mm, and the like. And the warp density of the forming net 100 is 65 pieces/cm; the density of the forming wire 100 weft threads is 62-68 threads/cm, such as 62 threads/cm, 64 threads/cm, 68 threads/cm, etc.
In order to further improve the wear resistance and stability of the forming wire 100 and prolong the service life, polyester monofilaments are used as the paper-forming layer warps 11, the paper-forming layer wefts 12, the machine layer warps 31 and the machine layer wefts 32, and nylon monofilaments are used as the connecting wefts 21 of the connecting layer 2.
As shown in fig. 1, forming wire 100 comprises a plurality of smallest weave units comprising warp threads of 20 polyester monofilaments and weft threads of 32 polyester monofilaments or nylon monofilaments. It should be noted that the paper-forming layer 1 in this embodiment includes a plurality of paper-forming layer units, the connecting layer 2 includes a plurality of connecting layer units, the machine layer 3 includes a plurality of machine layer units, and a minimum organization unit includes a paper-forming layer unit and a connecting layer unit, i.e., a machine layer unit.
Specifically, in this embodiment, forming wire 100 is woven from 20 harness frames and the smallest weave unit includes 20 warp yarns of polyester monofilament and 32 weft yarns of polyester monofilament or nylon monofilament. Wherein, the number of the paper-making layer warp threads 11 is 12, the number of the machine layer warp threads 31 is 8, the number of the machine layer weft threads 32 is 8, and the number of the paper-making layer weft threads 12 is 16. Since the first connecting weft 211 and the second connecting weft 212 arranged in a pair in the connecting layer 2 correspond to one paper-layer forming weft 12, the 16 paper-layer forming wefts 12 include 8 connecting wefts 21 of the connecting layer 2.
Referring to fig. 2 to 4, fig. 2 to 4 show the process of interweaving 20 warps with the paper-forming layer wefts 12 and the machine layer wefts 32 in the minimum organization unit of the novel special forming net 100 for household paper. Wherein, the 1 st to 4 th, the 5 th to 8 th, the 9 th to 12 th, the 13 th to 16 th, the 17 th to 20 th, the 21 th to 24 th, the 25 th to 28 th and the 29 th to 32 th wefts are all a cycle. In each of the above-described cycles, the first weft is the paper-making layer weft 12, the second weft is the machine layer weft 32, the third weft is the first connecting weft 211, and the fourth weft is the second connecting weft 212. In each cycle, the number ratio of the paper-forming layer warp yarns 11 to the machine layer warp yarns 31 is 3: 2; the number ratio of the paper-forming layer weft yarns 12 to the machine layer weft yarns 32 is 2: 1.
The following illustrates the properties of the novel tissue forming wire 100 of the present invention:
example 1
In the embodiment, 20 heald frames are adopted to connect three different weaving structures of a paper forming layer 1, a connecting layer 2 and a machine layer 3 into a whole and form a novel special forming net 100 for the household paper, and 20 warps and 32 wefts are used as a minimum organization unit.
In the embodiment, the warp 11 of the paper-forming layer is polyester monofilament with the diameter of 0.10mm, the weft 12 of the paper-forming layer is polyester monofilament with the diameter of 0.11mm, and the paper-forming layer 1 adopts 1/1 plain weaving method; the machine layer warp 31 is made of polyester monofilament with the diameter of 0.25mm, the machine layer weft 32 is made of polyester monofilament with the diameter of 0.25mm, and the machine layer 3 is made of a 4-harness satin weaving method; the first connecting weft 211 and the second connecting weft 212 of the connecting layer 2 adopt nylon monofilaments with the diameter of 0.11mm, the nylon monofilaments are connected into the paper layer 1 and the machine layer 3, the nylon monofilaments are interwoven with the paper-forming layer warp 11 to support paper surfaces, finished paper is guaranteed to be flat and smooth, the nylon monofilaments are interwoven with the machine layer warp 31 to play a role in sewing the paper-forming layer 1 and the machine layer 3, and meanwhile, the wear resistance of the forming net 100 is improved. The novel special forming wire 100 for the household paper obtained in the embodiment 1 is detected by using a method in GB/T24290-2009 measuring method for papermaking forming wires and drying wires, wherein the warp density is 65 pieces/cm, the weft density is 64 pieces/cm, and other performance detection is shown in the following table 1.
Example 2
In the embodiment, 20 heald frames are adopted to connect three different weaving structures of a paper forming layer 1, a connecting layer 2 and a machine layer 3 into a whole and form a novel special forming net 100 for the household paper, and 20 warps and 32 wefts are used as a minimum organization unit.
In the embodiment, the warp 11 of the paper-forming layer is polyester monofilament with the diameter of 0.09mm, the weft 12 of the paper-forming layer is polyester monofilament with the diameter of 0.10mm, and the paper-forming layer 1 adopts 1/1 plain weaving method; the machine layer warp 31 is made of polyester monofilament with the diameter of 0.24mm, the machine layer weft 32 is made of polyester monofilament with the diameter of 0.27mm, and the machine layer 3 is made of 4-harness satin weaving; the first connecting weft 211 and the second connecting weft 212 of the connecting layer 2 adopt nylon monofilaments with the diameter of 0.10mm, the nylon monofilaments are connected into the paper layer 1 and the machine layer 3, the nylon monofilaments are interwoven with the paper-forming layer warp 11 to support paper surfaces, finished paper is guaranteed to be flat and smooth, the nylon monofilaments are interwoven with the machine layer warp 31 to play a role in sewing the paper-forming layer 1 and the machine layer 3, and meanwhile, the wear resistance of the forming net 100 is improved. The novel special forming wire 100 for the household paper obtained in the embodiment 1 is detected by using a method in GB/T24290-2009 measuring method for papermaking forming wires and drying wires, wherein the warp density is 65 pieces/cm, the weft density is 63 pieces/cm, and other performance detection is shown in the following table 1.
Example 3
In the embodiment, 20 heald frames are adopted to connect three different weaving structures of a paper forming layer 1, a connecting layer 2 and a machine layer 3 into a whole and form a novel special forming net 100 for the household paper, and 20 warps and 32 wefts are used as a minimum organization unit.
In the embodiment, the warp 11 of the paper-forming layer is polyester monofilament with the diameter of 0.11mm, the weft 12 of the paper-forming layer is polyester monofilament with the diameter of 0.12mm, and the paper-forming layer 1 adopts 1/1 plain weaving method; the machine layer warp 31 is made of polyester monofilament with the diameter of 0.26mm, the machine layer weft 32 is made of polyester monofilament with the diameter of 0.24mm, and the machine layer 3 is made of a 4-harness satin weaving method; the first connecting weft 211 and the second connecting weft 212 of the connecting layer 2 adopt nylon monofilaments with the diameter of 0.12mm, the nylon monofilaments are connected into the paper layer 1 and the machine layer 3, the nylon monofilaments are interwoven with the paper-forming layer warp 11 to support paper surfaces, finished paper is guaranteed to be flat and smooth, the nylon monofilaments are interwoven with the machine layer warp 31 to play a role in sewing the paper-forming layer 1 and the machine layer 3, and meanwhile, the wear resistance of the forming net 100 is improved. The novel special forming wire 100 for the household paper obtained in the embodiment 1 is detected by using a method in GB/T24290-2009 measuring method for papermaking forming wires and drying wires, wherein the warp density is 65 pieces/cm, the weft density is 65 pieces/cm, and other performance detections are shown in the following table 1.
Table 1: novel performance detection result of forming net 100 special for household paper
As can be seen from the data in table 1, the novel forming wire 100 special for household paper provided by the present invention has a high fiber support index and a large number of support points, which indicates that the novel forming wire 100 special for household paper provided by the present invention has a high retention rate for the fibers and fillers of the paper, the surface mesh marks of the formed paper are greatly reduced, and the paper sheet formation is more uniform; the higher dehydration index and the increased air permeability indicate that the novel forming wire 100 special for the household paper has improved dehydration capability on paper sheets.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a papermaking apparatus 200 according to an embodiment of the present invention. The papermaking apparatus 200 of the present invention includes the novel special forming wire 100 for household paper in any of the above embodiments.
In conclusion, the paper forming layer 1 of the invention adopts the plain weave weaving method, so that the fiber support index of the forming net 100 is improved, the net surface is finer and smoother, the fiber retention rate of the household paper is improved, and the paper industry is formed more uniformly; in addition, the machine layer 3 of the invention adopts a 4-harness satin weaving method, so that the forming net 100 has a tighter structure and enhanced stability, and the service life is further prolonged. In addition, on one hand, the number of the paper layer warps 11 and the number of the machine layer warps 31 are reasonably set, so that the paper layer warps 11 are thinner and have higher density, and the machine layer warps 31 are thicker, so that the dehydration efficiency is improved to meet the production requirements of high-speed papermaking equipment; on the other hand, by properly setting the number of layer wefts 12 and machine layer wefts 32, the thickness of the forming wire 100 is made thinner, thereby reducing the water content to increase the dewatering speed, and the paper layer 1 is also made smoother.
It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The above detailed description is merely illustrative of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications within the scope of the present invention without departing from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a novel special forming wire of domestic paper, includes into paper layer, articulamentum and machine layer, the articulamentum is used for connecting become paper layer and the machine layer, its characterized in that: the paper forming layer is formed by paper forming layer warps and paper forming layer wefts through a plain weaving method, and the machine layer is formed by machine layer warps and machine layer wefts through a 4-harness satin weaving method; the number of the paper-forming layer warps is larger than that of the machine layer warps, and the number of the paper-forming layer wefts is larger than that of the machine layer wefts.
2. A forming wire according to claim 1, characterized in that: the number ratio of the warp yarns of the paper-forming layer to the warp yarns of the machine layer is 3: 2.
3. A forming wire according to claim 1, characterized in that: the number ratio of the paper-forming layer weft to the machine layer weft is 2: 1.
4. A forming wire according to claim 1, characterized in that: the number of connecting wefts of the connecting layer is 1/2 of the total number of wefts of the forming wire.
5. A forming wire according to claim 1, characterized in that: the diameter of the warp of the paper-forming layer is 0.09-0.11mm, and the diameter of the weft of the paper-forming layer is 0.10-0.12 mm; the diameter of the warp threads of the machine layer is 0.23-0.27mm, and the diameter of the weft threads of the machine layer is 0.23-0.27 mm.
6. A forming wire according to claim 1, characterized in that: the forming net is formed by weaving 20 heald frames, and comprises a plurality of minimum tissue units, wherein the minimum tissue units comprise 20 warps consisting of polyester monofilaments and 32 wefts consisting of polyester monofilaments or nylon monofilaments.
7. A forming wire according to claim 1, characterized in that: the density of the warp threads of the forming net is 65 threads/cm, and the density of the weft threads of the forming net is 62-68 threads/cm.
8. A forming wire according to claim 1, characterized in that: the connecting wefts of the connecting layer comprise a first connecting weft and a second connecting weft which are paired and sewn with each other, the first connecting weft is interwoven with the paper-forming layer warps, and the second connecting weft is interwoven with the machine layer warps so as to connect the paper-forming layer with the machine layer; and the diameters of the first connecting weft and the second connecting weft are 0.10-0.12 mm.
9. A forming wire according to claim 1, characterized in that: the paper-forming layer warp yarns, the paper-forming layer weft yarns, the machine layer warp yarns and the machine layer weft yarns are all made of polyester monofilaments, and the connecting weft yarns of the connecting layer are made of nylon monofilaments.
10. A papermaking plant, characterized in that it comprises a forming wire according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911275778.2A CN110952367A (en) | 2019-12-12 | 2019-12-12 | Novel special forming wire for household paper and papermaking equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911275778.2A CN110952367A (en) | 2019-12-12 | 2019-12-12 | Novel special forming wire for household paper and papermaking equipment |
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| CN110952367A true CN110952367A (en) | 2020-04-03 |
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|---|---|---|---|
| CN201911275778.2A Pending CN110952367A (en) | 2019-12-12 | 2019-12-12 | Novel special forming wire for household paper and papermaking equipment |
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| Country | Link |
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2019
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