CN212375626U - 20-harness novel SSB papermaking forming wire and papermaking equipment - Google Patents
20-harness novel SSB papermaking forming wire and papermaking equipment Download PDFInfo
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- CN212375626U CN212375626U CN201921948082.7U CN201921948082U CN212375626U CN 212375626 U CN212375626 U CN 212375626U CN 201921948082 U CN201921948082 U CN 201921948082U CN 212375626 U CN212375626 U CN 212375626U
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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
- D21F1/0027—Screen-cloths
- D21F1/0036—Multi-layer screen-cloths
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Abstract
The application discloses 20 heald novel SSB papermaking forming wire and papermaking equipment, wherein the 20 heald novel SSB papermaking forming wire comprises a surface layer, a connecting layer and a bottom layer, the connecting layer is used for connecting the surface layer and the bottom layer, the surface layer is formed by weaving surface layer warps and surface layer wefts in a staggered mode, and the bottom layer is formed by weaving bottom layer warps and bottom layer wefts in a staggered mode; and the number of the surface layer warps is greater than that of the bottom layer warps. Through adjusting structural design, the warp quantity of surface course increases, and the warp line diameter of surface course can be thinner, the warp density of surface course is higher, and surface course fibre supports the index height, and is better to the effect of holding back of thick liquids, effectively improves the rate of remaining of fibre and filler, and then promotes the page finished paper quality. Meanwhile, the number of bottom layer warps is small, the diameters of the bottom layer warps can be thicker, the wear resistance is better, and the service life of the forming net is prolonged.
Description
Technical Field
The application belongs to the technical field of papermaking, and concretely relates to 20 heald novel SSB papermaking forming wire and papermaking equipment.
Background
Papermaking forming wires are important forming and dewatering structures in the wet end of papermaking equipment. The inventor of the application finds that with the continuous increase of the speed of a paper machine, some paper mills use poorer sizing agent for reducing cost and put higher requirements on a forming wire. The existing SSB papermaking forming net has low retention rate of pulp due to structural limitation, and causes poor paper quality of paper sheets.
SUMMERY OF THE UTILITY MODEL
The application provides 20 heald novel SSB papermaking forming wire and papermaking equipment to solve traditional papermaking forming wire and can not compromise the technical problem who guarantees the retention rate and improve life.
In order to solve the technical problem, the application adopts a technical scheme that: a20-harness novel SSB papermaking forming net comprises a surface layer, a connecting layer and a bottom layer, wherein the connecting layer is used for connecting the surface layer and the bottom layer, the surface layer is formed by interweaving surface layer warps and surface layer wefts, and the bottom layer is formed by interweaving bottom layer warps and bottom layer wefts; and the number of the surface layer warps is greater than that of the bottom layer warps.
According to an embodiment of the present application, the number ratio of the surface layer warp threads to the bottom layer warp threads is 3: 2.
According to one embodiment of the application, the ratio of the sum of the number of surface layer wefts and the number of connecting wefts of the connecting layer to the number of bottom layer wefts is 3: 2.
According to an embodiment of the application, the number of connecting wefts of the connecting layer is 1/3 the total number of wefts of the forming wire.
According to an embodiment of the present application, the top layer comprises a plurality of top layer units, the connecting layer comprises a plurality of connecting layer units, and the bottom layer comprises a plurality of bottom layer units; the forming net is composed of a plurality of minimum organization units, wherein each minimum organization unit comprises a surface layer unit, a connecting layer unit and a bottom layer unit, and the minimum organization units comprise 20 warps and 48 wefts.
According to an embodiment of the present application, the connection layer includes a pair of first connection weft and second connection weft, the first connection weft is interwoven with the surface layer warp, and the second connection weft is interwoven with the bottom layer warp, thereby connecting the surface layer with the bottom layer.
According to an embodiment of the present application, the surface course warp with the surface course weft is formed through the plain weave weaving method, the bottom warp with the bottom weft is formed through 8 heald weaving methods.
According to an embodiment of the application, the surface layer warp and the bottom layer warp adopt polyester monofilament, and the surface layer weft and the bottom layer weft adopt polyester monofilament or nylon monofilament.
According to one embodiment of the application, the connecting weft of the connecting layer is made of nylon monofilament.
In order to solve the above technical problem, another technical solution adopted by the present application is: a papermaking apparatus comprising a forming wire as described in any one of the preceding claims.
The beneficial effect of this application is: be different from prior art's condition, the 20 heald novel SSB papermaking forming wire that this application provided, through adjusting structural design, because the warp increase in quantity of surface course, the warp line diameter of surface course can be thinner, the warp density of surface course is higher, and surface course fibre supports the index height, and is better to the effect of holding back of thick liquids, effectively improves the rate of staying of fibre and filler, and then promotes the paper finished paper quality. Meanwhile, the number of bottom layer warps is small, the diameters of the bottom layer warps can be thicker, the wear resistance is better, and the service life of the forming net is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic representation of the weave pattern of the smallest weave elements in one embodiment of a 20 harness SSB papermaking forming wire of the present application;
FIG. 2 is a schematic structural view of an embodiment of the step-by-step weaving of the 1 st to 12 th wefts of the minimal organization unit in FIG. 1;
FIG. 3 is a schematic structural view of an embodiment of the step-by-step knitting of 13 th to 24 th wefts of the minimal organization unit in FIG. 1;
FIG. 4 is a schematic structural view of an embodiment of a 25 th to 36 th weft threads of the minimal organization unit in FIG. 1 by step weaving;
FIG. 5 is a schematic structural view of an embodiment of the step weaving of 37 th to 48 th wefts in the minimal organization unit in FIG. 1;
FIG. 6 is a schematic diagram of the structure of an embodiment of the papermaking apparatus of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1-5, fig. 1 is a schematic diagram of a weave pattern of the smallest weave unit in an embodiment of a 20 harness SSB papermaking forming wire of the present application; FIG. 2 is a schematic structural view of an embodiment of the step-by-step weaving of the 1 st to 12 th wefts of the minimal organization unit in FIG. 1; FIG. 3 is a schematic structural view of an embodiment of the step-by-step knitting of 13 th to 24 th wefts of the minimal organization unit in FIG. 1; FIG. 4 is a schematic structural view of an embodiment of a 25 th to 36 th weft threads of the minimal organization unit in FIG. 1 by step weaving; FIG. 5 is a schematic structural view of an embodiment of the weft threads from the 37 th to the 48 th of the minimal organization unit in FIG. 1 by step weaving.
SSB (Sheet Support Binding wire) papermaking triple layer forming fabrics use weft-bonded pairs to form part of the forming fabric face layer. The 20-harness new SSB papermaking forming wire 100 in one embodiment of the present application includes a surface layer 110 (also referred to as a paper layer), a connecting layer 120 and a bottom layer 130 (also referred to as a machine layer), the connecting layer 120 is used for connecting the surface layer 110 and the bottom layer 130, the surface layer 110 is formed by interweaving surface layer warp yarns 111 and surface layer weft yarns 112, and the bottom layer 130 is formed by interweaving bottom layer warp yarns 131 and bottom layer weft yarns 132; wherein, the number of the surface layer warp threads 111 is larger than that of the bottom layer warp threads 131. This application is through the structural design of adjustment forming net, the increase of the quantity of surface course warp 111, and the line diameter of surface course warp 111 can be thinner, the density of surface course warp 111 is higher, and the surface course 110 fibre supports the index height, and is better to the effect of holding back of thick liquids, effectively improves the rate of staying of fibre and filler, and then ensures that the page shaping is even, promotes page finished paper quality. Meanwhile, the number of the bottom layer warps 131 is small, the wire diameter of the bottom layer warps 131 can be thick, the wear resistance is good, and the service life of the forming net 100 is prolonged.
In one embodiment, the number ratio of the surface layer warp yarns 111 to the bottom layer warp yarns 131 is 3: 2. The surface layer warp yarns 111 and the bottom layer warp yarns 131 in the proportion are reasonable in structure, fine in mesh surface and high in fiber support index, so that retention rates of fibers and fillers are improved better, and paper forming uniformity is guaranteed.
In one embodiment, the ratio of the sum of the number of the surface layer wefts 112 and the number of the connecting wefts 121 of the connecting layer 120 to the number of the bottom layer wefts 132 is 3: 2. In this ratio, the number of bottom weft yarns 132 is small and the bottom weft yarns 132 can be thicker, thereby providing high abrasion resistance and increasing the useful life of the forming wire 100. The surface layer weft yarns 112 in the present embodiment include only the surface layer weft yarns 112, and do not include the connecting weft yarns 121 of the connecting layer 120. In other embodiments, since two connecting wefts 121 arranged in pairs in the connecting layer 120 of the SSB papermaking triple-layer forming wire 100 correspond to one surface layer weft 112 in the papermaking technical field, the above-mentioned ratio of the number of wefts may also be described as a ratio of the number of surface layer wefts 112 to the number of bottom layer wefts 132 of 3:2, in which case the number of surface layer wefts 112 includes the number of connecting wefts 121 of the connecting layer 120.
In one embodiment, the number of weft yarns in tie layer 120 is 1/3 based on the total number of weft yarns in forming wire 100. The total weft yarn count of forming wire 100 includes the number of face layer weft yarns 112, the number of connecting weft yarns 121 of connecting layer 120, and the number of bottom layer weft yarns 132.
In one embodiment, the surface layer warp 111 and the surface layer weft 112 are formed by a flat weaving method, and the warp and the weft of the flat weaving method are interwoven in an upper-lower rule, that is, every other warp is interlaced, the number of interwoven points is large, and the number of buckling points of the warp and the weft is the largest, so that the fiber support index is high, the meshes are uniform, the mesh surface is fine, the fibers and the fillers of finished paper are improved, the paper sheet is ensured to be uniformly formed, the paper sheet is conveniently stripped from the forming net 100, and the finished paper surface is smooth. In other embodiments, the surface layer 110 may also be woven by other weaving methods, which are not limited herein. Further, the surface layer warp 111 and the surface layer weft 112 are both made of polyester material.
In one embodiment, the bottom warp 131 and the bottom weft 132 are formed by 8-harness weaving. This method increases the span of the bottom weft yarn 132, ensures improved wear resistance of the forming wire 100, and extends the useful life of the forming wire 100. In other embodiments, the bottom layer 130 may also be woven by other weaving methods, which are not limited herein. In order to further improve the wear resistance, the service life and the running stability of the bottom layer 130 of the forming wire 100, the bottom layer warp 131 is made of polyester material, and the bottom layer weft 132 is made of polyester material and nylon material.
In one embodiment, the connecting wefts 121 of the connecting layer 120 include pairs of first connecting wefts 1211 and second connecting wefts 1212, the first connecting wefts 1211 are interwoven with the surface layer warps 111, and the second connecting wefts 1212 are interwoven with the bottom layer warps 131, thereby connecting the surface layer 110 with the bottom layer 130. By the above connection manner of "one pair of connection", the first connecting weft 1211 and the second connecting weft 1212 of the connecting layer 120 connect the surface layer 110 and the bottom layer 130, and when the first connecting weft 1211 is interwoven with the surface layer warp 111, the second connecting weft 1212 is interwoven with the bottom layer warp 131, and when the first connecting weft 1211 is interwoven with the bottom layer warp 131, the second connecting weft 1212 is interwoven with the surface layer warp 111, and is tightly connected with the bottom layer 130 from the surface layer 110, so that the combination is firmer. Furthermore, the first connecting wefts 1211 and the second connecting wefts 1212 of the connecting layer 120 are made of a material with a large shrinkage rate, so that the surface layer 110 and the bottom layer 130 are further ensured to be connected more firmly without dislocation.
With continued reference to fig. 1, in one embodiment, the surface layer 110 includes a plurality of surface layer units, the connecting layer 120 includes a plurality of connecting layer units, and the bottom layer 130 includes a plurality of bottom layer units. The forming wire 100 is made up of a plurality of minimal structural units, a minimal structural unit comprising a face layer unit, a tie layer unit and a bottom layer unit, the minimal structural unit comprising 20 warp threads and 48 weft threads. The number of the surface layer warps 111 is 12, the number of the bottom layer warps 131 is 8, the number of the surface layer wefts 112 is 16, the number of the connecting wefts 121 of the connecting layer 120 is 16, and the number of the bottom layer wefts 132 is 16.
With continuing reference to fig. 2 to 5, fig. 2 to 5 show the process of interweaving 20 warp yarns with the surface layer weft yarns 112, the bottom layer weft yarns 132 and the connecting weft yarns 121 of the connecting layer 120 in the minimum weave unit of the SSB papermaking forming wire 100 according to the present application. Wherein, the 1 st to 6 th, the 7 th to 12 th, the 13 th to 18 th, the 19 th to 24 th, the 25 th to 30 th, the 37 th to 42 th and the 43 th to 48 th wefts are all a cycle. In each of the above-described cycles, the first weft is the face-layer weft 112, the second weft is the bottom-layer weft 132, the third weft is the face-layer weft 112, the fourth weft is the first connecting weft 1211, the fifth weft is the bottom-layer weft 132, and the sixth weft is the second connecting weft 1212. In each cycle, the number ratio of the surface layer warp yarns 111 to the bottom layer warp yarns 131 is 3: 2; the ratio of the sum of the number of the connecting weft threads 121 (i.e., the first connecting weft threads 1211 and the second connecting weft threads 1212) of the surface layer weft threads 112 and the connecting layer 120 to the number of the bottom layer weft threads 132 is 3: 2.
The following illustrates the performance of the inventive SSB papermaking forming wire 100 of the present application 20.
Example 1
In this embodiment, the high abrasion-resistant paper-making forming net 100 for high-speed paper machine is formed by interweaving polyester or nylon monofilament into three different weaving structures, i.e., a surface layer 110, a connecting layer 120 and a bottom layer 130, by using 20 heald frames, and uses 20 warps and 48 wefts as a minimum organization unit.
In this embodiment, the surface layer warp 111 is polyester monofilament with a diameter of 0.15mm, the surface layer weft 112 is polyester monofilament with a diameter of 0.18mm, and the surface layer 110 is knitted by 1/1 flat weaving; the bottom layer warp 131 is made of polyester monofilament with the diameter of 0.32mm, the bottom layer weft 132 is made of polyester monofilament and nylon monofilament which are alternately used, the diameter of the bottom layer weft 132 is 0.50mm, and the bottom layer 130 is made of high-wear-resistance 8-harness weaving; the first connecting weft 1211 and the second connecting weft 1212 of the connecting layer 120 are made of nylon monofilament with a diameter of 0.18mm, and the connecting surface layer 110 and the bottom layer 130 are interwoven with the surface layer warp 111 to support the paper surface, so that the finished paper is smooth, and are interwoven with the bottom layer warp 131 to sew up the surface layer 110 and the bottom layer 130, and meanwhile, the wear resistance of the bottom layer 130 is improved. The 20-harness novel SSB papermaking forming wire 100 obtained in this example 1 was tested by the method in GB/T24290-2009 "papermaking forming wire 100, drying wire measuring method", and the warp density was 45 threads/cm, the weft density was 43.5 threads/cm, and other performance tests are shown in table 1 below.
Example 2
In this embodiment, the high abrasion-resistant paper-making forming net 100 for high-speed paper machine is formed by interweaving polyester or nylon monofilament into three different weaving structures, i.e., a surface layer 110, a connecting layer 120 and a bottom layer 130, by using 20 heald frames, and uses 20 warps and 48 wefts as a minimum organization unit.
In this embodiment, the surface layer warp 111 is polyester monofilament with a diameter of 0.12mm, the surface layer weft 112 is polyester monofilament with a diameter of 0.13mm, and the surface layer 110 is knitted by 1/1 flat weaving; the bottom layer warp 131 is made of polyester monofilament with the diameter of 0.24mm, the bottom layer weft 132 is made of polyester monofilament and nylon monofilament which are alternately used, the diameter of the bottom layer weft 132 is 0.40mm, and the bottom layer weft 132 is made of a high-wear-resistance 8-harness weaving method; the first connecting weft 1211 and the second connecting weft 1212 of the connecting layer 120 are made of nylon monofilament with a diameter of 0.13mm, and the connecting surface layer 110 and the bottom layer 130 are interwoven with the surface layer warp 111 to support the paper surface, so that the finished paper is smooth, and are interwoven with the bottom layer warp 131 to sew up the surface layer 110 and the bottom layer 130, and meanwhile, the wear resistance of the bottom layer 130 is improved. The 20-harness novel SSB papermaking forming wire 100 obtained in this example 2 was tested by the method in GB/T24290-2009 "papermaking forming wire 100, drying wire measuring method", and the warp density was 55 threads/cm, the weft density was 52 threads/cm, and other performance tests are shown in table 1 below.
Example 3
In this embodiment, the high abrasion-resistant paper-making forming net 100 for high-speed paper machine is formed by interweaving polyester or nylon monofilament into three different weaving structures, i.e., a surface layer 110, a connecting layer 120 and a bottom layer 130, by using 20 heald frames, and uses 20 warps and 48 wefts as a minimum organization unit.
In this embodiment, the surface layer warp 111 is polyester monofilament with a diameter of 0.10mm, the surface layer weft 112 is polyester monofilament with a diameter of 0.11mm, and the surface layer 110 is knitted by 1/1 flat weaving; the bottom layer warp 131 is made of polyester monofilament with the diameter of 0.21mm, the bottom layer weft 132 is made of polyester monofilament and nylon monofilament which are alternately used, the diameter of the bottom layer weft 132 is 0.30mm, and the bottom layer 130 is made of high-wear-resistance 8-harness weaving; the first weft and the second weft of the connecting layer 120 are made of nylon monofilaments with the diameter of 0.11mm, and the connecting surface layer 110 and the bottom layer 130 are interwoven with the surface layer warp 111 to support a paper surface, so that finished paper is smooth, the connecting surface layer 110 and the bottom layer 130 are interwoven with the bottom layer warp 131 to sew the surface layer 110 and the bottom layer 130, and meanwhile, the wear resistance of the bottom layer 130 is improved. The 20-harness novel SSB papermaking forming wire 100 obtained in this example 2 was tested by the method in GB/T24290-2009 "papermaking forming wire 100, drying wire measuring method", and the warp density was 65 pieces/cm, the weft density was 72 pieces/cm, and other performance tests are shown in table 1 below.
Table 1: performance test result of 20 heald novel SSB papermaking forming wire
As can be seen from the data in table 1, the 20-harness new SSB papermaking forming wire provided in the present application has a high surface layer opening rate and high air permeability, which indicates that the forming wire in the present embodiment has a high retention rate for the fibers and fillers of the paper, the surface mesh marks of the formed paper are greatly reduced, the paper sheet formation is more uniform, and the drainage is greatly enhanced. Meanwhile, the strength is higher, the wear resistance is good, and the service life is long.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a papermaking apparatus 200 according to the present application. The papermaking apparatus 200 of the present application includes the 20 harness SSB papermaking forming wire 100 of any of the embodiments described above.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (7)
1. A20-harness novel SSB papermaking forming wire comprises a surface layer, a connecting layer and a bottom layer, wherein the connecting layer is used for connecting the surface layer and the bottom layer,
the surface layer is formed by interweaving surface layer warps and surface layer wefts, and the bottom layer is formed by interweaving bottom layer warps and bottom layer wefts;
the number of the surface layer warps is greater than that of the bottom layer warps;
wherein the number ratio of the surface layer warp threads to the bottom layer warp threads is 3: 2;
the surface layer comprises a plurality of surface layer units, the connecting layer comprises a plurality of connecting layer units, and the bottom layer comprises a plurality of bottom layer units; the forming net is composed of a plurality of minimum organization units, wherein each minimum organization unit comprises a surface layer unit, a connecting layer unit and a bottom layer unit, and each minimum organization unit comprises 20 warps and 48 wefts;
the surface layer warp and the surface layer weft are formed through a plain weaving method, and the bottom layer warp and the bottom layer weft are formed through an 8-harness weaving method.
2. A forming wire according to claim 1, characterized in that the ratio of the sum of the number of surface layer wefts and the number of connecting wefts of the connecting layer to the number of bottom layer wefts is 3: 2.
3. A forming wire according to claim 1, characterized in that the number of connecting wefts of the connecting layer is 1/3 of the total number of wefts of the forming wire.
4. A forming wire as in claim 1, wherein the connecting layer comprises pairs of first and second connecting weft threads, the first connecting weft threads being interwoven with the face layer warp threads and the second connecting weft threads being interwoven with the bottom layer warp threads, thereby connecting the face layer with the bottom layer.
5. A forming wire as claimed in claim 1, characterised in that the surface layer warp threads and the bottom layer warp threads are polyester monofilament threads and the surface layer weft threads and the bottom layer weft threads are polyester monofilament threads or nylon monofilament threads.
6. A forming wire according to claim 1, characterized in that the connecting weft of the connecting layer is made of nylon monofilament.
7. A papermaking plant, characterized in that it comprises a forming wire according to any one of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911058528 | 2019-11-01 | ||
| CN2019110585283 | 2019-11-01 |
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| CN201911102939.8A Pending CN111197266A (en) | 2019-11-01 | 2019-11-12 | 20-harness novel SSB papermaking forming wire and papermaking equipment |
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