JPH0382890A - Double cloth for papermaking - Google Patents

Abstract

PURPOSE:To prevent upper-layer weft yarns from their being depressed on a papermaking surface and obtain the subject cloth forming a smooth papermaking surface without any recessed parts by forming long crimps in the upper-layer weft yarns and forming crimps having a length of 3 or more warp yarns by a specific method. CONSTITUTION:Each warp yarn is arranged so that the adjacent 2 upper-layer weft yarns may be woven by one warp yarn and the next adjacent 2 upper-layer weft yarns at an interval of 5 weft yarns from the upper-layer weft yarn woven with the initial warp yarn may be woven by the adjacent next warp yarn. Thereby, long crimps and short crimps are alternately arranged in the respective upper-layer weft yarns. The long crimps and short crimps are adjacent among the adjacent upper-layer weft yarns. Since the mutual long crimps and short crimps are prevented from adjoining, regular arrangement of crimps in the oblique direction of the warp yarns formed on the upper-layer weft yarns on the papermaking surface is divided into sections to prevent marks in the oblique direction from occurring in paper.

Description

[Detailed description of the invention] [Industrial application field] The present invention is directed to papermaking fabrics.

[Conventional Techniques] In papermaking using ordinary Fourdrinier, a slurry of paper stock is fed to a running end of the papermaking machine. From this point of view, the papermaking fabric acts as a filter for the formation of a wet paper web.・Sosh Kai 1
One part functions to separate water from the slurry. In addition, in a fourdrinier paper making machine, the papermaking fabric also functions as a driving bell 1, so the machine is subject to tension in the direction of the bell, so it is necessary to have good posture stability.

There are several problems in paper manufacturing, but the following requirements are particularly required for paper manufacturing fabrics. High retention of paper stock, i.e., little loss of paper stock from the papermaking surface, no wire marks, /7' Good water-based property and low water retention, 144 High abrasion resistance, and posture. The stability is good.

In order to meet the above-mentioned demands for papermaking fabrics, various proposals have been made in the past. However, the current situation is that there is still no fully satisfactory papermaking fabric.

In recent years, for example, woven fabrics with a double weft structure have become preferred because they have less flat space and are dehydrated in three-dimensional space, resulting in slower dewatering compared to single-ply woven fabrics and better retention of fibers. However, there is a drawback that wire marks are generated due to the arrangement of crimps formed on the paper-making surface of the warp yarns and the structure in which the weft yarns, which should be present between the warp yarns, are partially recessed from the paper-making surface.

One attempt was to increase the number of weft yarns on the papermaking surface by placing floating yarns, which are not woven in the warp and weft intersecting form that normally forms textiles, in the weft yarns. It has been proposed to compensate for the depressions in the weft threads and form the paper-making surface with the weft threads.Although this proposal is an interesting technical idea in terms of increasing the number of weft threads on the paper-making surface, it is still not sufficient. In other words, the weft yarns that are not woven into such a structure are just floating yarns and are moved by the fluid pressure applied to the weft yarns when slurry is supplied to the papermaking fabric, causing so-called shifting of the weft yarns and preventing a uniform papermaking surface. I can't maintain it.

If this type of floating yarn is provided between the upper wefts of a double structure, the reactor water resistance will decrease, so the spacing between the wefts will have to be widened.

As a result, the density liquid of the lower weft yarn forming the running surface reduces the wear-resistant volume, significantly shortens the running life, and causes practical problems such as fibrillation of the floating yarn due to showering.

It has been proposed to use multiple woven fabrics to maintain trainability, to make the paper-making surface a fine mesh, and to impart wear resistance, but none has yet been fully satisfactory.

[Problems to be Solved by the Invention] The present inventor has found that the above-mentioned paper stock retention properties are high, wire marks do not occur, and water drainage is good.
In order to solve problems such as high abrasion resistance and good posture stability, as a result of various researches, we have removed the addendum that causes the weft to cave in between the warp threads that form the paper-making surface in woven fabrics with a double weft structure. The paper-making surface is formed by crimping warp and weft threads to form a flat surface, and long weft crimps are always interposed between the crimps formed by adjacent warp threads on the paper-making surface to prevent fibers from getting stuck, and to prevent fibers from sticking to the paper-making surface. It cuts between the crimps of the warp threads to eliminate the regularity of the crimps that the warp threads form on the paper-making surface, thereby preventing the occurrence of wire marks.
The present invention was completed.

Means for Solving the Problems] The present invention provides the following features:
(n=0, 2.6 or 8, the same applies hereinafter) Shaft with 2X (17+n) upper layer wefts forming a repeating pattern, where the number of upper layer wefts is twice the number of lower layer wefts Each upper layer weft alternately passes over different numbers of warp threads to form long crimps and short crimps alternately, and between adjacent weft threads, long crimps and short crimps are adjacent to each other. A repeating pattern of every 2X (17+n) warps or upper wefts, which are woven into the fabric by passing over two adjacent upper wefts, and the next adjacent warp is either the first warp or the two upper wefts that have crossed over. From the weft, the next two upper wefts are woven into the #ll weave, and in the same way, up to the 17+nth warp, the weave is woven into the Mi weave. A complete weave is made into paper. A double woven fabric for papermaking, in which the lower layer weft is arranged every other upper layer weft, and the lower layer weft is woven into the structure at least once between each warp or between the upper layer wefts (17+n). .

2. The upper layer has 34 wefts and 17 warps, and the long crimp formed by each upper layer weft is 1 warp.
2. The papermaking double-woven fabric according to claim 1, wherein the short crimp is for four warps.

3. The fabric has 38 wefts in the upper layer and 19 shafts in the warp, and the long crimp formed by each weft in the upper layer is in the warp 1.
2. The two-piece papermaking product according to claim 1, wherein the short crimp is equal to 7 warps.

4. The upper layer has 46 wefts and 23 warps, and each upper layer has a long crimp or 12 warps.
2. The double 1iill product for papermaking according to claim 1, wherein the short crimp is the length of nine warp threads.

5. #Th with 50 upper wefts and 25 warps
2. The double woven fabric for paper making according to claim 1, wherein the long crimp formed by the two-layer weft is equivalent to 17 warp threads, and the short crimp is equivalent to 6 warp threads.

6. The double-woven fabric for papermaking according to any one of claims 1 to 5, wherein a long crimp of lower weft yarns is formed on the running surface.

7. Claim 1: The lower layer weft is thicker than the upper layer weft.
The double-woven fabric for papermaking according to any one of items 6 to 6.

8. The papermaking double piece according to any one of claims] to 7, wherein the lower weft on the running surface is a polyamide weft and/or a polyester weft.

9. The double-woven fabric for papermaking according to any one of claims 1 to 8, wherein the lower layer weft on the running surface is a boria lost weft yarn that is thicker than the lower layer polyester weft yarn. ” related.

Since the present invention is a double woven fabric having the above-mentioned structure, the paper-making surface is formed with rich weft yarns, and each weft yarn is formed with long crimps and short crimps alternately, and long crimps and short crimps of the weft yarns are formed between adjacent upper layer yarns. Crimp is a special addendum that is placed adjacent to each other alternately. The running surface is characterized by a lower weft density than the papermaking surface. In addition, each warp interweaves two adjacent upper layer wefts. This special configuration provides the excellent effects described in the next section.

In the present invention, one of the upper wefts or 34 warps on the papermaking surface is
In the case of a 7-shaft item, the upper weft forms a short crimp for 04 warp threads and a long crimp for 11 warp threads. In addition, there are 38 upper wefts and 1 warp on the papermaking surface.
In the case of a 9-shaft fabric, the upper weft yarns form short crimps of 7 warp yarns and long crimps of 10 warp yarns.

In addition, in the case of a fabric with 46 upper wefts and 23 shafts of warp on the papermaking surface, the upper weft is a short crimp of 9 warps,
Form a long crimp with 12 warp threads. In addition, in the case of a fabric with 50 upper wefts and 25 warps on the paper-making surface, the upper wefts form a short crimp of 6 warps and a long crimp of 17 warps.

Next, the reason why phosphorus 1 must be formed in this way will be explained.

The upper layer weft that forms the papermaking surface is pushed down by the warp between the warps that weave the weft into the weaving, and is recessed from the papermaking surface to form a recess. On the other hand, the warp that exists between the warps that weave the upper weft into the weft, which is woven into the weft by the upper weft, is either under the upper weft and pushes the upper weft upwards, or actually does not weave the upper weft into the weave. 1. Since the force pushing down the warp yarns is greater than the force pushing them up, depressions are formed on the papermaking surface due to depressions of the upper weft yarns.

According to research by the present inventors, the larger the number of warp threads that are below the upper weft on the papermaking surface and push the upper weft upward, in other words, the longer the crimp formed by the upper weft, the greater the force that pushes the upper weft upward. As it is pushed up, the depression becomes smaller.

The present inventors further conducted research and found that in order to prevent the upper layer weft from collapsing on the papermaking surface and form a smooth papermaking surface where the recesses meet, it is necessary to form a long crimp in the upper layer weft, and at least 3 warps. The present invention was completed by elucidating that it is necessary to form a crimp with a length longer than the required length. If the length of the crimp to be formed on the upper weft is less than 3 warps, it is structurally impossible to completely prevent the upper weft from collapsing and a recess will occur, making it impossible to form a completely smooth papermaking surface. Can not. This means that the range of the push-down blade of the warp that pushes down the upper layer weft is both the contact area of the upper layer weft where the warp touches (Rule No. 2) It can be logically understood that if the crimp formed by the weft is equal to or more than three warp threads, the influence of the pressing blade of the warp threads will be reduced, and the depression of the upper weft threads will be reduced.

Polyamide yarn or polyester yarn is suitable as the yarn for weaving the fabric of this invention, and in particular, polyester yarn is used for the warp, polyester yarn is used for the upper weft, and polyester yarn is used for the lower weft.
Fabrics using both polyamide yarn and polyester yarn exhibit very good performance, including posture stability and abrasion resistance.

The papermaking fabric of the present invention is a double weft fabric. The density of the lower layer weft is 1/2 that of the upper layer weft, and since the #11 weave is different between the paper making surface and the running surface, when considering the lower layer weft, the number of lower layer wefts is 1/2 of the number of upper layer wefts. '2, therefore, in the case of the number of shafts in the present invention, unless the number of upper layer wefts is doubled, the lower layer wefts will not be repeated and a complete structure will not be obtained. Therefore, in the present invention, in the complete structure, the number of upper weft yarns is twice as many as the number of warp shafts. The lower layer wefts are arranged one layer apart from and below the upper layer wefts.

The papermaking fabric of the present invention is characterized in that the weft yarns forming the running surface form a long crimp, have a large effective wear-resistant volume, and have good Wf4 abrasion resistance.

The paper-making material of the present invention means not only so-called paper-making fabrics but also all paper-making fabrics such as paper-making dry canvas and paper-making felt.

[Created for; As mentioned above, the papermaking fabric of the present invention has each warp.

Arranged so that one warp weaves two adjacent upper layer wefts, and the next adjacent warp weaves the next two adjacent upper layer wefts that have moved from the first warp or the upper layer weft that was woven. 2, long crimps and short crimps are arranged alternately on each upper layer weft, and long crimps and short crimps are arranged adjacently between adjacent upper layer wefts to prevent long crimps and short crimps from adjoining each other. Therefore, the regular array of warp crimps formed on the upper weft on the paper-making surface in the diagonal direction is broken by the long crimp of the upper weft, and no diagonal marks are generated on the paper.

Wire marks that occur on paper stand out and are recognized as wire marks because the paper's thickness, irregularities, etc. are regularly arranged. It is extremely rational and effective to cut off this.

In addition, the papermaking surface formed by the high-density upper weft yarns has good paper stock retention during papermaking, and has a uniform ♂ water content without sticking pulp fibers, resulting in the occurrence of wire marks. In addition to preventing this, it also improves paper manufacturing yield and paper smoothness.

Furthermore, since the lower layer weft forms a long crimp, it has good crimpability, and thick wefts can be arranged, which, together with the long crimp, can greatly increase the wear resistance #: product of the weft. , and the wear resistance is significantly increased.

Further, since thick yarns can be arranged as the lower layer wefts, rigidity can be imparted to the entire fabric, resulting in excellent posture stability.

5. In the present invention, the lower layer weft has a coarser density than the upper layer weft, 17'2, so it has low water resistance, good shower effect, and low water retention. The addition of textiles will be specifically explained in Examples based on the drawings.

[Example] Next, an example of the present invention will be specifically explained based on the drawings, showing a design diagram showing a complete structure.

Each design drawing is a complete design drawing showing the papermaking surface of the papermaking fabric of the present invention. Therefore, the lower layer wefts are arranged every other time and below the upper layer wefts of the papermaking surface structure6.
In this embodiment, for the sake of explanation, the lower layer wefts are arranged below the upper layer wefts indicated by odd numbers in each complete design drawing. Of course, the same effect can be obtained even if the lower layer wefts are arranged below the upper layer wefts indicated by even numbers. Considering the lower layer weft, in the case of an odd number of shafts, unless the number of wefts is twice the number of shafts, the lower layer weft will not be repeated and a complete structure will not be obtained.

In the papermaking fabric of the present invention, the number of shafts is an odd number and the number of wefts is 2 (@) of the number of shafts, otherwise the waste wefts will not be repeated and a complete river edge will not be formed, so the explanation will include the lower wefts in the examples. Therefore, the number of upper layer wefts was doubled to create a complete design drawing.

In the complete design drawing, the warp threads are Arabic numerals, for example 1.2.
．． '3, and the upper wefts are not indicated by dashed Arabic numerals such as 1', 2', 3. The lower layer wefts are not shown in the design drawings, but in the explanation they are explained using the same Arabic numerals as the upper layer wefts, with double dashes such as 1'', 2''3''. Also, in the diagram, the x indicates whether the warp or the upper layer The x indicates the position above the weft, but it also indicates the position where the upper weft or warp is woven into the #J1 weave.The ○ indicates the position where the lower weft is woven into the weave by the warp.

The embodiment shown in FIG. 1 is originally a 17-shaft fabric, but
Since the number of shirts is 1 to 1 or an odd number, considering the repetition of the lower weft, the complete structure of the papermaking surface is shown with 17 warp shafts and 34 wefts.

The upper layer weft 1' in FIG. 1 is woven into a two-silk weave by warp 1 and warp 13. Then, a long crimp of 11 warps is formed between warps 1 and 7 and warp 13,
In addition, a short crimp of four warp threads is formed between the weaving parts shown in the complete design diagram repeated to the right or left of this complete design diagram.

Further, the upper layer weft 2' is woven into the structure twice by warp 1 and warp 6. Then, a short crimp for 4 warps is formed between warp 1 and warp 6, and a long crimp for 11 warps is formed between the weaving area shown in the complete design diagram that repeats to the right or left of Manako's complete design diagram. Forming a crimp.

Similarly, the upper wefts 3' to 34' of the pond form short crimps corresponding to 4 warps and long crimps corresponding to 11 warps, respectively.

Then, between the upper wefts 1' and 2', a long crimp formed by the upper weft 1' between the warps 1 and 13, and a short crimp formed between the warps 1 and 6 by the upper weft 2' are adjacent to each other. are doing. In this manner, each upper weft has its respective long crimp and short crimp disposed adjacent to each other, and also its short crimp and long crimp adjacent to each other.

The warp 1 passes over the upper wefts 1', 2' and 18', 19', and weaves these two adjacent upper wefts into the fabric. Then, lower layer wefts 7'' and 23'' are woven into the structure.

Further, the warp threads 2 are woven into the fabric by passing over the next two adjacent upper layer wefts 8' and 9', which are placed five from the upper layer wefts 2', which are woven by the warp yarns 1.

Furthermore, five upper layer wefts 19' are woven into the fabric by passing over the next two adjacent upper layer wefts 25' and 26'. The lower layer wefts 13'' and 31'' are then woven into the fabric.

Similarly, each of the other 3 to 17 warps is woven into the fabric by passing over the next two adjacent upper layer wefts, five of which are placed from the upper layer weft woven by the adjacent warp. And the lower layer weft is woven into two identical structures.

In this way, each warp passes over the next two adjacent upper wefts placed five times from the upper weft woven by the adjacent warp, and is woven into the fabric, with one twist to each upper weft. Since the long crimp and the short crimp are arranged alternately, and the long crimp and the short crimp are arranged adjacently between adjacent upper layer wefts, it is possible to prevent the long crimp and the short crimp from adjoining each other, and the short crimp and the short crimp from each other are prevented from being adjacent to each other. The diagonal alignment of warp crimps formed on the upper weft on the paper making surface is shredded by the long crimp of the upper weft, resulting in the force of the crimp forming on the warp or paper making surface 5 It was broken and a wire mark was created, and he was made a substitute J. In addition, the paper-making surface has a flat surface formed by long crimps of the weft threads, so that the weft threads do not sag between the warp threads on the paper-making surface. Furthermore, if the paper-making surface is made of weft yarns, the paper size will directly stick into the rain hole between the warp yarns and will not block the drain hole, so the rain properties of the fabric will be significantly improved. In the embodiment shown in FIG. 1, it is understood that long weft crimps are always interposed between the crimps formed by adjacent warp threads on the paper-making surface to prevent fibers from getting stuck. In the embodiment shown in FIG. The 0 lower wefts of ``and 23'' are woven into the weave, and the adjacent warp 2 weaves the 13'' and 31'' lower wefts into the Mi weave, and the adjacent warp 3 is woven into the Mi weave of the 3'' and 21'' lower wefts. Weave the weft threads into the fabric.

When viewed from the lower weft 1'', it is woven with warp 5 and warp 10, and a short crimp of 4 warps is formed between warp 5 and warp 10, and the weave shown in the organization chart is repeated next to this organization chart. It can be seen that a long crimp of 11 warp threads is formed between the two parts.

In this way, the weaving positions of the lower wefts of adjacent warps are different, and each lower weft is woven twice with a complete structure, and the warp 1
A long crimp for one warp thread and a short crimp for four warp threads are formed. In this embodiment, the number of weavings of the lower layer weft is large, so the woven fabric has high rigidity and excellent posture stability.

The embodiment shown in FIG. 2 shows a complete structure of a paper-making material having 17 warps, 34 shafts, and 34 wefts, which is the same as the embodiment shown in FIG.

The upper layer structure is the same as the example shown in Fig. 1.
In addition, the arrangement of diagonal crimps formed by adjacent warp threads on the paper-making surface is disrupted, and the regularity of the crimps formed between the warp threads and the paper-making surface is disrupted, resulting in the same effect as preventing wire marks from occurring. be.

Lower layer! Looking at IFi weaving, warp 1 is 9″ and 2
The lower layer weft of 9" is woven into the fi] weave, and the warp 2 is 19
'', 33'' lower weft! The warp threads 3 weave the lower weft threads 9'' and 23'' into the fabric. and warp 1
and warp thread 3 sandwich warp thread 2 and form a pair to weft thread 9'' of the lower layer.
Similarly, the warps 3 to 17 of the 9 ponds, which are woven into the fabric, are shaped like a pair in which the warp of the book rest is sandwiched between the adjacent warp at the part where the warp or the upper weft is woven. The lower layer weft is woven into the Mi weave.

The lower N weft yarns form a crimp as long as 14 warp yarns. In other words, in this example, the lower layer weft is woven into the structure once by a pair of warp yarns with the adjacent warp interposed between them, so the crimpability of the lower layer weft is very good, and it is believed that thicker wefts can be used. 2. Understood. Moreover, it is characterized by forming an extremely long crimp. Since the weft threads of the lower layer are woven once into the fabric by a pair of warp threads sandwiching an adjacent warp thread between them, the woven portion is strong, and the rigidity of the fabric is greatly affected by the posture stability.

The embodiment shown in FIG. 3 shows a complete structure of a papermaking fabric, which is the same as the embodiment shown in FIG. 1, but has 17 warp threads to 34 weft threads, but differs in the weaving position of the lower layer weft threads.

The structure of the upper layer is the same as that of Jitsuya ρ1 in FIG.

The upper layer weft 1' in FIG. 3 is woven twice into the structure by warp 1 and warp 13. Then, a long crimp of 11 warps is formed between warp 1 and warp 13, and a short crimp of 4 warps is formed between the weaving area shown in the complete design drawing repeated to the right or left of this complete design drawing. Forming a crimp. Then, the long crimp of the layer weft l' and the upper layer weft 2
′ short crimps are adjacent.

Further, the upper layer weft 2' is woven into the M weave twice by warp 1 and warp 6. Then, a short crimp for 4 warps is formed between the warp thread 6 and the warp thread 6, and a short crimp for 11 warps is formed between the weaving area shown in the complete design drawing repeated to the right or left of this complete design drawing. Forms a long crimp.

Similarly, the upper wefts of 3' to 34' of the curve form short crimps for 4 warps and long crimps for 11 warps, and similarly, the short crimps and long crimps of the adjacent upper wefts are adjacent to each other. I understand that.

The warp thread 1 passes over the upper weft threads 1' and 2' and above the upper weft threads 18' and 19', and the two adjacent upper weft threads are woven into the fabric. Then, lower layer wefts 7'' and 31'' are woven into the structure.

In addition, the warp 2 is 5 from the upper weft 2' woven by the warp 1.
The fabric is woven into the fabric by passing over the next two adjacent upper layer wefts 8' and 9'.

Further, the warp yarn 1 passes over the next two adjacent upper layer wefts 25' and 26', which are placed five from the woven upper layer weft 19', and is woven into the fabric. and lower weft 21″
and 3■'' are incorporated into the organization.

4 The other 3 to 17 warps pass over the next two adjacent upper Wj wefts placed 5 from the upper layer weft woven by the F4 warps, and are woven into the fabric.6 And the lower layer weft 2 are incorporated into the organization.

In this way, each warp passes over the next two adjacent upper wefts placed five times from the upper weft woven by the adjacent warp and weaves into the fabric, creating a long crimp and a short crimp for each upper weft. are arranged alternately, and long crimps and short crimps are arranged adjacently between adjacent upper wefts to prevent long crimps and short crimps from adjoining each other, so that the crimps are formed on the upper wefts of the paper making surface. The regular arrangement of warp crimps in the diagonal direction is disrupted by the long crimps of the upper weft yarns, disrupting the regularity of the crimps formed by the warp yarns on the paper-making surface, and preventing wire marks from occurring. In addition, the paper-making surface has a flat surface formed by the long crimps of the weft threads, and there is no depression of the weft threads between the warp threads on the paper-making surface.Furthermore, the adjacent warp threads are always long between the crimps formed on the paper surface. It is understood that the weft crimp intervenes to prevent the fibers from sticking.The lower weft 1'' is woven once into the weave by a pair of warp threads 4 and 5, and is repeated next to this weave diagram. It can be seen that a long crimp of 15 warp threads is formed between the woven part shown in the organization chart.

In other words, in this example, the weft of the lower layer is strongly woven by a pair of adjacent warp yarns into #11 weave by 1%, so it is understood that the crimpability of the lower layer weft is good for fluorine, and thicker wefts can be used. . Moreover, it is characterized by forming an extremely long crimp. In addition, the stiffness of the woven material provides excellent posture stability.

The embodiment shown in Fig. 4 has one warp, shaft, and 38 wefts.
The complete Mi weave of the fabric is shown.

The upper layer weft 1' in Fig. 4 is Af twice by warp 1 and warp 9.
It is woven into a weave. Then, a short crimp of 7 warps is formed between warp 1 and warp 9, and 10 warps of 6 minutes are formed between the weaving area shown in the complete design drawing repeated to the right or left of this complete design drawing. Forms a long crimp.

Further, the upper layer weft 2' is woven into the weave twice by the warp 1 and the warp 12. Then, a long crimp of 10 warps is formed between warp 1 and warp 12, and a short crimp of 7 warps is formed between the weaving area shown in the complete design drawing repeated to the right or left of this complete design drawing. Forming a crimp.

The long crimp of the upper weft 1' and the short crimp of the upper weft 2' are adjacent to each other.

1f! ! Similarly, the upper wefts from 3' to 38' form short crimps for 7 warps and long crimps for 10 warps. It can be seen that the adjacent upper layer wefts have short crimps and long crimps adjacent to each other.

The warp thread 1 passes over the upper weft threads 1' and 2' and over the upper weft threads 20' and 21', weaving these two adjacent upper weft threads into the fabric. The lower layer wefts 11'' and 29'' are woven into the Mi weave.

In addition, the warp 2 is 5 from the upper weft 2' woven by the warp 1.
The next two adjacent upper layer wefts 3 7' and 9' after placing the main weft, and the next two adjacent upper layer wefts 27' and 28 after placing 5 from the upper layer weft 21' woven by the warp 1
', and the adjacent 2* upper layer wefts are woven into the fabric. The lower layer wefts 17'' and 37'' are then woven into the fabric.

Fi! ! Similarly, each of the warp threads 3 to 1 of
Passing over the upper wefts of books, I am becoming familiar with PA knowledge. And the lower layer weft is woven into the target weave twice.

In this way, each warp passes over the next two adjacent upper wefts placed five from the adjacent warp or the upper weft that has been woven into the kumiai, thereby creating a long length for each upper weft. Short crimps are arranged alternately, and long crimps and short crimps are arranged adjacently between adjacent upper wefts to prevent long crimps and short crimps from adjoining each other. The regular diagonal rows of warp criss-crosses formed on the paper are broken by the long crimp of the upper weft, which breaks the regularity of the crimp formed by the warp on the paper-making surface and prevents the generation of wire marks. In addition, the paper-making surface has a flat surface formed by long crimp weft threads, and there is no depression of the weft threads between the warp threads on the paper-making surface. Furthermore, it is understood that there is always a long weft crimp interposed between the crimps formed by adjacent warp threads on the paper-making surface to prevent fibers from getting stuck. Weave into the weave at two locations. Form a long crimp of 17 warps between L warp threads 5 and 16, and repeat on the right or left of this complete design diagram with the weaving area shown in the complete design diagram. In between, a short crimp of seven warp threads is formed.

This embodiment is characterized in that the lower layer weft is completely woven twice by the warp, and because the number of times of weaving is large, the stiffness of the fabric is large and the posture stability is reduced.

The fifth (21st embodiment) shows the complete structure of the 1st embodiment of a wooden fabric with warp 19 shaft weft 38. The upper weft 1' in Figure 58 is woven into the structure twice by warp 1 and warp 9. Then, between warp 1 and warp 9, warp 7
A short crimp corresponding to the main purpose is formed, and a long crimp corresponding to 10 warp threads is formed between the weaving part shown in the design diagram which is completed without delay to the right or left of this complete design diagram.

Further, the upper layer weft 2' is woven into the JL weave twice by warp 1 and warp 12. Then, a long crimp of 10 warps is formed between warp 1 and warp 12, and a short crimp of 7 warps is formed between the weaving area shown in the complete design drawing that repeats to the right or left of Manako's complete design drawing. It forms a krisib. Then, the short crimp of the upper weft J' and the upper weft 2'
adjoining long crisibs.

Similarly, the upper M wefts 3' to 38' of the pond form short crimps corresponding to 7 warps and long crimps corresponding to 10 warps, respectively. It can be seen that the adjacent upper layer wefts have a short crimp and a long crimp adjacent to each other. The warp ■ passes over the upper layer wefts 1'5, 2', 20', and 21', and is incorporated into the organization. The lower layer wefts 5'' and 31'' are then woven into the fabric.

In addition, the warp 2 is the upper layer weft 2' and 21 woven by the warp].
The fabric is woven into the fabric by passing over the next two adjacent upper wefts 8', 9', 27', and 28' placed five from each of ''. The lower layer wefts 19'' and 31'' are then woven into the fabric.

In the same way, each of the three to one warps of the candy is woven into the fabric by passing over the next two upper wefts that are in contact with IA, which are placed five from the upper weft woven by the warp of the eye. And the lower layer weft is woven into two identical structures.

In this way, the warp threads are woven into the fabric by passing over the next two adjacent upper wefts placed 5 times from the upper weft that the adjacent warp has woven, creating a long crimp and show 1 on each upper weft. - The crimps are arranged alternately, and long crimps and short crimps are arranged adjacently between adjacent upper layer wefts, preventing long crimps and short crimps from adjoining each other, so that the upper layer wefts on the paper making surface are The regular arrangement of the warp crimps in the creation direction, which is formed on the paper, is disrupted by the long crimps of the upper weft, and the regularity of the crimps formed by the warp on the papermaking surface is disrupted, preventing the generation of wire marks. has been done. In addition, the paper-making surface has a flat surface formed by long crimping of the weft threads, and there is no depression of the weft threads between the warp threads on the paper-making surface. Furthermore, the crimp of the weft yarn is always interposed in the opening of the crimp formed by the adjacent warp yarns on the paper-making surface, and the embedded angle V− of the lower weft yarn 1″ is 1″ to prevent the fibers from sticking. The pair of warp threads 13 and 14 are woven into the fabric at one point, and between the second weaving area and the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing, there are 17 warp threads. Forms a long crimp.

In the example shown in Fig. 5, the weaving of the lower layer weft is carried out in one place by a pair of warp yarns, so the crimp property is good, and the fabric is rigid and has excellent posture stability6.It also forms an extremely long crimp. Therefore, it has very good wear resistance.

The example in FIG. 6 shows the complete structure of #A material with one shaft and 38 wefts.

The upper layer weft 1' in FIG. 6 is woven into the same structure by warp 1 and warp 9. Then, a short crimp of 7 warps is formed between warp 1 and warp 9, and a long crimp of 10 warps is formed between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. Forming a crimp.

Further, the upper layer weft 2' is woven twice into the warp 1 and warp 12 weave. Then, a long crimp of 10 warps is formed between warp 1 and warp 12, and a short crimp of 7 warps is formed between the weaving area shown in the complete design drawing repeated to the right or left of this complete design drawing. Forming a crimp.

Similarly, the other upper layer wefts 3' to 38' form short crimps corresponding to 7 warps and long crimps corresponding to 10 warps, respectively.

Then, between the upper weft 1' and 2', the upper weft 1' forms a short crimp between the warp 1 and 9 and the upper weft 2'
is adjacent to a long crimp formed between warp threads 1 and 12. In this manner, each upper weft has its respective long crimp and short crimp disposed adjacent to each other, and also its short crimp and long crimp adjacent to each other.

In this example, adjacent! It can be seen that one of the two warp yarns that weave each of the upper N weft yarns to form a long crimp and a short crimp is common to each other.

The warp yarn 1 passes over the upper weft yarns 1' and 2' and over the upper layer weft yarns 20' and 21', and these two adjacent upper Rts yarns are woven into the structure. And lower layer weft 9″13″ and 27″, 33″
'' is incorporated into the organization.

Further, the warp threads 2 are woven into the fabric by passing over the next two adjacent upper layer wefts 8' and 9', which are placed five from the upper layer wefts 2', which are woven by the warp yarns 1.

In addition, the warp 1 passes over the next two adjacent upper layer wefts 27' and 28', which are placed five from the upper layer weft 21', and is woven into the structure. So L4, lower layer wefts 1", 15", 21" and 35"! It is woven into the fi weave.

In the same way, each of the three to one warps of the pond is woven into the fabric by passing over the next two adjacent upper wefts that are placed five from the adjacent warp or the upper weft that has been woven. Then, every other warp interweaves the lower layer weft in pairs in such a manner that the adjacent warp is sandwiched between the adjacent warps at the region where the upper layer weft is woven. Each lower layer weft is woven into two identical structures with a pair of warp yarns.

In this way, each warp passes over the next two adjacent upper wefts after placing five upper wefts that the adjacent warp has woven into the fabric, creating a long crimp and a short crimp on each upper weft. are arranged alternately, and long crimps and short crimps are arranged adjacently between adjacent upper wefts to prevent long crimps and short crimps from adjoining each other. The regular arrangement of warp crimps in the diagonal direction is disrupted by the long crimps of the upper weft, disrupting the regularity of the crimps formed by the warp on the papermaking surface, and preventing wire marks from occurring. In addition, the paper-making surface is formed by long crimping of the weft threads, creating a flat surface.
There is no depression of the weft threads between the warp threads on the papermaking surface. Furthermore, it is understood that long weft crimps are always interposed between adjacent warp yarns or crimps formed on the paper making surface, and that the fibers are prevented from getting stuck.

In the embodiment shown in FIG. 6, the lower weft (every other warp) is
Since the adjacent warp is sandwiched between the warp or the upper weft, and the lower weft is completely woven twice, the fabric has a large 10% property and excellent posture stability. .

The example of FIG. 7 shows the complete construction of a nine-shaft, thirty-eight weft papermaking fabric. The upper layer A weave is the same as the embodiment shown in FIG. 5, but the number of weaving of the lower layer weft is different.

By weaving each warp yarn into an open weave by passing over the next two adjacent upper wefts placed five from the adjacent warp or the interwoven upper weft, long crimps and short crimps are alternately applied to each upper weft. II! i
Long crimps and short crimps are placed adjacent to each other between the upper wefts that touch each other, and long crimps and short crimps are prevented from adjoining each other, so that the warp crimps formed on the upper N wefts of the paper-making surface move in the diagonal direction. The regular arrangement of is shredded by the long crimp of the upper weft,
The same effect can be achieved in that the regularity of the crimp formed by the warp yarns on the paper making surface is broken and the occurrence of wire marks is prevented.

In addition, the paper-making surface has a flat surface formed by long crimp weft threads, and there is no depression of the weft threads between the warp threads on the paper-making surface.

Furthermore, long weft crimps are always interposed between the crimps formed by adjacent warp yarns on the papermaking surface, and the same is true for preventing fibers from getting stuck.

Warp 1 weaves the lower wefts of 5'', 11'', 23'' and 31'', and the adjacent warp 2 weaves 11''. The lower layer wefts of ``, 19'', 31'' and 37'' are woven into the weave, and the adjacent warp 3 weaves the lower layer wefts of 7'', 19'', 25'' and 37'' into the weave, and the adjacent warp 4 is woven into the weave. 7″
The lower layer wefts of 13'', 25'' and 33'' are woven into the Mi weave.

In this way, adjacent warp threads form a pair to weave the weft threads of the lower layer.

Looking from the lower layer weft, the lower layer weft 1'' is woven into two identical structures by a pair of warp yarns 5.6 and 13.14.

In other words, in this embodiment, each weft in the lower layer is woven into two identical structures by l pairs of adjacent warp yarns, so it is understood that the crimpability of the lower layer weft is very good and thick wefts can be used. Moreover, it is characterized by forming a long crimp, and has extremely good wear resistance.

The embodiment shown in FIG.
Showing the complete organization of course.

The upper layer weft 1' in FIG. 8 is woven into two identical structures by warp 1 and warp 14. Then, a long crimp of 12 warp threads is formed between the warp threads 1 and 14, and a crimp of 9 warp S threads is formed between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. Forms a short crimp.

Further, the upper layer weft 2' is woven into the A-weave twice by warp 1 and warp 11. Then, a short crimp of 9 warps is formed between warp 1 and warp 11, and a long crimp of 12 warps is formed between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. Forming a crimp.

The short crimp of the upper weft 1'' and the long crimp of the upper weft 2' are adjacent to each other.

Similarly, the other upper layer wefts 3' to 46' form a short crimp corresponding to 9 warps and a long crimp corresponding to 12 warps, respectively. It can be seen that adjacent upper layer wefts have short crimps and long crimps adjacent to each other.

The warp 1 passes over the upper wefts 1', 2' and 24', 25', weaving these two adjacent upper wefts into the fabric. The lower layer wefts 11'' and 33'' are then woven into the fabric.

In addition, the warp 2 is the upper layer weft 2' and 25 woven by the warp 1.
The next three and two upper layer wefts 8', 9' and 31', 32', each of which has five wefts, are passed through, and these two adjacent upper layer wefts are woven into the fabric. . The lower wefts, 17″ and 41″, are then woven into the fabric.

In the same way, each of the warp threads 3 to 23 of the song is woven into the fabric by passing over the next two adjacent upper weft threads, which are five of the upper weft threads woven by the adjacent warp threads. Then, the lower layer weft is woven into 20 ribbons.

In this way, each of the adjacent warp yarns passes over the next two adjacent upper layer wefts provided from the woven upper layer weft yarn in the Sfl sense, so that a long crimp and a short crimp are created in each upper layer weft. arranged alternately,
In addition, the long crimp and short crimp are arranged adjacently between adjacent upper wefts, preventing long crimps and short crimps from adjoining each other, so that warp crimps formed on the upper weft on the papermaking surface The regular arrangement of the paper in the diagonal direction is broken by the long crimp of the upper weft, and the regularity of the talinops formed by the warp on the paper-making surface is disrupted, thereby preventing the generation of wire marks. In addition, the paper-making surface is formed by long crimps of the weft to form a flat surface, and there is no depression of the weft between the warps on the paper-making surface. Furthermore, it is understood that long weft crimps are always interposed between adjacent warp threads or crimps formed on the paper making surface, and that the penetration of fibers is prevented.

In the embodiment shown in FIG. 8, the lower layer weft yarns are woven into two identical structures, so the number of times of weaving is large, so the posture stability of the fabric is good, the crimpability of the lower layer weft yarns is good, and thick weft yarns can be used. Moreover, it forms a slight and long crimp.

The example of FIG. 9 shows the complete construction of a woven fabric with 23 warp yarns and 46 weft yarns.

The upper layer weft 1' in FIG. 9 is woven into the same structure by warp 1 and warp 14. Then, a long crimp for 12 warps is formed between warp 1 and warp 14, and a crimp for 9 warps is formed between the right side of this complete design drawing and the weaving area shown in the complete design drawing that repeats to the left. Forms a short crimp.

Further, the upper N weft 2' is woven twice into the weave of the warp 1 and the warp 11. Then, a short crimp of 9 warps is formed between warp 1 and warp 11, and a long crimp of 12 warps is formed between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. Forming a crimp.

The short crimp of the upper weft 1' and the long crimp of the upper weft 2' are adjacent to each other.

Similarly, the upper wefts from 3' to 46' of the pond form a short crimp of 9 warps and a long crimp of 12 warps, respectively. It can be seen that the adjacent upper layer wefts have short crimps and long crimps adjacent to each other.

The warp thread 1 passes over the upper weft threads 1' and 2' and over the upper weft threads 24' and 25', and these two adjacent upper weft threads are woven into the fabric. And lower layer weft 9″17″, 31″, 41″
is incorporated into the organization.

Further, the warp threads 2 are woven into the fabric by passing over the next two adjacent upper layer wefts 8' and 9', which are five of the upper layer wefts 2', which are woven by the warp I.

Further, the warp 1 is woven into the fabric by passing over the next two adjacent upper layer wefts 31' and 32', which are placed five from the upper layer weft 25'. And the lower layer weft is 1″,
15″, 25″ and 39″ are incorporated into the fabric.

In the same way, each of the warp threads 3 to 23 of the song is woven into the fabric by passing over the next two adjacent upper wefts, five of which are placed from the upper weft thread woven by the adjacent warp thread. Then, every other warp interweaves the lower layer weft in pairs in such a way that the adjacent warp is sandwiched between the adjacent warps at the portion where the upper layer weft is woven.

Each lower layer weft is woven into two identical structures with a pair of warp yarns.

In this way, a long crimp and a short crimp are created in each upper weft by each warp passing over the next two adjacent upper wefts placed five times from the adjacent warp or the interwoven upper weft. In addition, long crimps and short crimps are arranged adjacently between adjacent upper layer wefts to prevent I'Ji contact between long crimps and short crimps. The formed regular array of warp crimps in the diagonal direction is broken by long crimps of the upper weft,
The regularity of the crimp formed by the warp yarns on the papermaking surface is disrupted to prevent wire marks from occurring. In addition, the paper-making surface has a flat surface formed by long crimps of the weft threads, and there is no depression of the weft threads between the warp threads on the paper-making surface. Furthermore, long weft crimps are always interposed between the crimps formed by adjacent warp yarns on the papermaking surface, and the fiber! ! It is understood that the 11 insertion +7f is prevented.

In the example shown in FIG. 9, every other warp of the lower layer weft is interwoven with a pair of adjacent warps in the area where the upper layer weft has been woven, so that the lower layer is spun into a complete A-weave. Since it is woven twice, the fabric has great rigidity and excellent posture stability.

The example of FIG. 10 shows a complete Mi weave with 25 warp yarns and 50 weft yarns.

The upper layer weft 1' in FIG. 10 is woven into the warp 1 and warp 8 92 times. Then, a short crimp for 6 warps is formed between warp 1 and warp 8, and a short crimp for 17 warps is formed between the weaving area shown in the complete design drawing that repeats on the right or left of the second complete design drawing. Forms a long crimp.

Further, the upper layer weft 2' is woven into the structure twice by warp 1 and warp 19. Then, a long crimp of 17 warps is formed between warp 1 and warp 19, and a short crimp of 6 warps is formed between the weaving area shown in the complete design drawing repeated to the right or left of this complete design drawing. Forming a crimp.

The short crimp of the upper weft 1' and the long crimp of the upper weft 2' intersect with each other.

Similarly, the upper wefts from 3' to 50' of the curve form short crimps corresponding to 6 warps and long crimps corresponding to 17 warps, respectively. It can be seen that adjacent upper layer wefts have short crimps and long crimps adjacent to each other.

The warp 1 passes over the upper R wefts 1', 2' and 26'27', and these two adjacent upper wefts are woven into the fabric. And the lower layer weft 1117″ and 35″, 43
” is incorporated into the organization.

Further, the warp thread 2 is woven into the fabric by passing over the next two adjacent upper layer wefts 8' and 9', which are placed five from the upper layer weft 2' that the warp thread I has woven.

Further, the warp 1 passes over the next two adjacent upper layer wefts 33' and 34', which are placed five from the woven upper layer weft 27', and is woven into the structure. And the lower weft is 17″
, 25'', 4B'' and 49'' are incorporated into the structure.

The other 3 to 23 warps are similarly woven into the fabric by passing over the next two adjacent upper wefts that are placed five from the upper weft woven by the adjacent warp. Each lower layer weft is woven into two identical structures with l pairs of warps.

In this way, each warp passes over the next two adjacent upper wefts placed five times from the adjacent warp or the upper weft interwoven into the fabric, so that each upper weft is alternately given a long crimp or a short crimp. In addition, the long crimps and short crimps are arranged adjacently between the adjacent upper wefts, and long crimps and short crimps are prevented from adjoining each other, so the warp formed on the upper weft on the papermaking surface The regular arrangement of the crimps in the creation direction is disrupted by the long crimps of the upper weft yarns, disrupting the regularity of the crimps formed by the warp yarns on the papermaking surface, and preventing the generation of wire marks. In addition, the paper-making surface is formed by long crimping of the weft threads, forming three flat surfaces.
There is no depression of the weft threads between the warp threads on the papermaking surface. Furthermore, it is understood that long weft crimps are always interposed between the crimps formed by adjacent warp yarns on the papermaking surface, thereby preventing fibers from getting stuck.

In the embodiment shown in FIG. 10, the lower layer weft is woven twice in a complete structure with a pair of adjacent warp yarns, so the stiffness of the fabric is large and the posture stability is poor.

In the embodiment of FIG. 11, the warp 25 shaft weft 57 The complete structure of 0 fabrics is shown.

The upper layer weft 1' in FIG. 11 is woven twice into the structure by the warp] and the warp 8. Then, a short crimp of 6 warp threads is formed between warp threads 1 and 8, and a long crimp of 17 warp threads is formed between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. Forming a crimp.

Further, the upper layer weft 2' is woven twice in the weft by warp 1 and warp 19. Then, a long crimp of 17 warps is formed between warp 1 and warp 19, and 6 warps are formed between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. A short crimp is fully formed in minutes. Then, a short crimp of the upper weft 1' and a short crimp of the upper weft 2'
adjoined by a long crimp.

Similarly, the upper wefts from 3' to 50' of the weft form a short crimp of 6 warps and a long crimp of 17 warps, respectively. And l',! ! It can be seen that the short crimp and long crimp are adjacent to each other in the upper layer weft.

8 Warp 1 passes over upper wefts 1', 2', 26'' and 27'', weaving these two adjacent upper wefts into the weave.Then, weaving the lower wefts 11'' and 41'' into the weave. I'm here.

In addition, the warp 2 is the upper layer weft 2' and 27 woven by the warp 1.
These two adjacent upper layer wefts are woven into the fabric by passing over the next two adjacent upper layer wefts 8', 9' and 33', 34', each of which is provided five from ''. The lower wefts, 23″ and 43″, are then woven into the fabric.

In the same way, each of the warp threads 3 to 25 of Ike is woven into the fabric by passing over the next two adjacent upper weft threads set five times from the upper weft thread woven by the adjacent warp thread, and passing the lower weft threads into the fabric by passing through the two adjacent upper weft threads. It is woven into the fabric.

In this way, each of the adjacent warp threads passes over the next two adjacent upper wefts provided from the woven upper weft thread into the fabric, so that long crimps and short crimps are alternately applied to each upper weft thread. In addition, the long crimp and short crimp are arranged adjacently between adjacent upper wefts, and long crimps and short crimps are prevented from adjoining each other, so that the warp formed on the upper weft on the papermaking surface The regular arrangement of the crimps in the creation direction is disrupted by the long crimps of the upper weft yarns, disrupting the regularity of the crimps formed by the warp yarns on the papermaking surface, and preventing the generation of wire marks. In addition, the paper-making surface is made flat by long crimps of the weft threads.
The weft threads do not collapse between the warp threads on the papermaking surface. Furthermore, it is understood that long weft crimps are always interposed between the crimps formed by adjacent warp yarns on the paper-making surface, thereby preventing fibers from getting stuck.

In the example shown in Fig. 11, the lower layer weft is woven into the fabric twice, so the number of times of weaving is large, resulting in good posture stability of the fabric, very good crimpability of the lower layer weft, and thick weft used. Moreover, it forms an extremely long crimp.

FIGS. 12 to 14 are cross-sectional views of three embodiments of the papermaking fabric of the present invention, including a portion of the complete structure that is repeated at the top for convenience of explanation.

For example, warps 20-24 in FIG. 12 are indicated here to indicate whether they are warps that are shown in a complete weave that repeats next to them.

FIG. 12 shows a cross-sectional view of the papermaking fabric according to the embodiment shown in FIG. 4 taken along the line -I'. The upper layer weft 11' is the warp 5.
16.24 woven, warp 10 on top of warp 6-15
The main long crimp is also formed on the warp yarns 17 to 23, and the short crimp for seven warp yarns is completely formed on the warp yarns 17-23.

On the other hand, the lower weft 11'' is woven into the fabric by the warps 1, 12 and 20, forming a long crimp of 10 warps between the warps 1 and 12, and 7 warps of wood between the warps 12 and 20. It is understood that it forms a short crimp.

FIG. 13 shows a sectional view of the paper mill of the embodiment shown in FIG. 5 taken along the line . The upper layer weft 21' is warp 1.12
．． A long crimp of 10 warps is formed on warps 2 to 11, and a short crimp of 7 warps is formed on warps 13 to 19.

On the other hand, the lower layer weft 21'' is a pair of warps 5.6 and 24.2.
5 is woven into the fabric, and it is understood that a long crimp of 17 warp threads is formed between the warp threads 5.6 and 24.2. A cross-sectional view of the papermaking fabric taken along the line m-m' is shown. Upper layer weft 9'
is woven with warp 2, ■3.21, and a long crimp of 10 warps is woven on warp 3 to 12, and warp 1.4 to
A pheasant crimp of 7 warp threads is formed on top of 20.

On the other hand, the lower layer string threads 9'' are January warp threads 1, 3, 12.14, and 20.2, which sandwich the adjacent warp threads 2, 13, and 21, respectively.
It is understood that the material is woven into the fabric at No. 2, forming a long crimp of 8 warp threads and a short crimp of 5 warp threads.

As can be seen from the cross-sectional views of FIGS. 12 to 14, the papermaking fabric of the present invention is formed by crimps in which long and short upper layer wefts are alternately arranged in a bridge-like manner on the papermaking surface or warp. You can see that wire marks are prevented. It can also be seen that a long crimp of the lower weft yarn is formed on the running surface, increasing the abrasion resistance.

FIG. 15 is a complete design drawing showing a conventional double weft fabric with 16 shuffles.

In Figure 15, the upper layer weft 1' is the warp 3 and the warp 6 is the warp 1.
1 and the warp 14 are woven into the M1 weave four times. Then, a short crimp for two warps is formed between the warp threads 3 and 6 and between the warp threads 11 and 14, and a complete crimp that is repeated between the warp threads 6 and 11 and on the right or left of the complete design diagram of 2 is formed. A crimp for four warp threads is formed between the weaving area shown in the design drawing.

In addition, the upper layer wefts 2' are warp 1, warp 6, warp 9, and warp 1.
4, it is woven into the tissue four times. A short crimp of two warp threads is formed between the five warp threads 6 and warp threads 9, and between the weaving portion shown in the complete design drawing repeated to the right or left of this complete design drawing. Further, the upper layer weft 2' forms a crimp for four warps between the warp 1 and the warp 6 and between the warp 1 and the warp 14.

Similarly, the upper wefts 3' to 16' of the pond form crimps for four warps and short crimps for two warps, respectively.

As can be seen from this prior art example, the upper weft yarns of the conventionally known 16-shaft material for paper manufacturing form a short crimp with the length of two warp yarns on the paper manufacturing surface.

Fig. 16 is a cross-sectional view taken along the line IV-IV' of the 16 shafts of the conventional example shown in Fig. 15. It indicates the condition. The upper weft 3' is woven into the fabric four times by the warps 1, 4, 9, and 12, and is pushed downward.

On the other hand, the warp threads 2.5 push the upper weft threads 3' upward, but since the pushing force of the warp threads 1 and 4 is large, they are pushed downward C and the upper weft threads 3' push the upper surface of the warp threads I and 4. If the crimp of the upper weft is only the length of two warp threads, there will be a depression 26 on the paper making surface.
It can be seen that the paper size slips into this area, forms a mat, and generates wire marks.

In FIG. 12, which is an embodiment of the present invention, the length of the crimp of the upper layer weft, or the shorter crimp, is the length of 7 warp yarns, and in this case, the M of the upper layer weft does not sink and the paper making surface becomes smooth. It is understood that

[Effects] Next, in order to explain the present invention in detail, the results of a comparative test on a specific ll11 fabric will be shown.

Comparative Test 1 Examination 1 M for paper making with 18 warps and 38 upper wefts of the present invention shown in Figure 5! T! Table 1 shows the results of a comparative test between Example 5) and the conventional 16-shaft papermaking fabric shown in FIG. 15 (Comparative Example 1). All threads used were monofilament.

(Leaving space below) 5 Table 1 6 (Note) PET: Polyester PA: Polyamide Valve liquid Reactor water time: Disintegrate newspaper waste and freeness 17
A pulp solution with a concentration of 0.04%, prepared as 0ml, was placed on the fabric at a water level of 300ml1m, and 1! IA! T! 1
The time it takes for the water level to reach zero when pulp liquid is poured onto the fabric surface at an angle of 15 degrees from the perpendicular to the surface.

From the above test results, the papermaking fabric of the present invention has water resistance,
It is clear that this fabric has extremely good effects in terms of pulp yield, smoothness, etc. compared to conventional fabrics.

[Brief explanation of drawings]

7 FIGS. 1 to 11 are complete design drawings showing an embodiment of the present invention. FIG. 12 is a cross-sectional view of the fabric shown in FIG. 4 cut along line II', and FIG. 13 is a cross-sectional view of the fabric shown in FIG.
It is a cross-sectional view taken along the line #I. Also, Figure 14 shows the 6th
FIG. 2 is a cross-sectional view of the fabric shown in the figure taken along line m-m'. FIG. 15 is a complete design drawing of a conventional 16-shaft double weft papermaking fabric. Figure 16 shows the fabric shown in Figure 15.■-J
It is a cross-sectional view taken along the V' line. The x in the drawing indicates the position where the warp is above the upper weft, but this x also indicates the position where the upper weft is woven by the warp to a length of 111 m. Moreover, ○ indicates the position where the lower layer weft is woven into the fabric by the warp. 1 to 25...Warp 1' to 50'...Upper weft 1'' to 49'' (odd number)...Lower weft 8 Figure 1 JP-A-3-82890 (16) 21-1 Figure 3 JP-A No. 82890 (17) Fig. 4 Fig. 5 JP-A No. 82890 (18) Fig. 6 Fig. 7 JP-A No. 82890 (19) Fig. 8 Fig. 9 JP-A No. 82890 (20) ■Z 1 01z+ Fig. 1 1 JP 82890 (21) Fig. 1 2 Fig. 13: (゛, , 7

Claims (1)

[Scope of Claims] 1. The number of warp yarns in which weft yarns are arranged in two upper and lower layers is 17+n (n=0
, 2, 6 or 8, the same applies hereinafter), and a woven fabric comprising a repeating pattern of 2×(17+n) upper layer wefts, where the number of upper layer wefts is twice the number of lower layer wefts, Each of the upper layer wefts alternately passes over different numbers of warp yarns to form long crimps and short crimps alternately, and long crimps and short crimps are adjacent between adjacent weft yarns. A repeating pattern of every 2×(17+n) weft yarns is woven into the fabric by passing over two adjacent upper weft yarns, and the next adjacent warp starts from the two upper weft yarns that the first warp has crossed. It was woven into the fabric by passing over the next two upper layer wefts after placing the 5th one, and then woven into the fabric in the same way up to the 17+nth warp.
A paper manufacturing method in which a complete weave is formed on the papermaking surface, and the lower wefts are arranged every other time than the upper wefts, and each warp weaves the lower wefts into the weave at least once between the upper wefts (17+n). double woven fabric. 2. The fabric has 34 wefts in the upper layer and 17 shafts in the warp, and the long crimp formed by each weft in the upper layer is equivalent to 11 warps, and the short crimp is equivalent to 4 warps.Claim 1
A double woven fabric for paper making described in . 3. The fabric has 38 wefts in the upper layer and 19 shafts in the warp, and the long crimp formed by each weft in the upper layer is equivalent to 10 warps, and the short crimp is equivalent to 7 warps.Claim 1
A double woven fabric for paper making described in . 4. The fabric has 46 wefts in the upper layer and 23 shafts in the warp, and the long crimp formed by each weft in the upper layer is equivalent to 12 warps, and the short crimp is equivalent to 9 warps.Claim 1
A double woven fabric for paper making described in . 5. The fabric has 50 wefts in the upper layer and 25 shafts in the warp, and the long crimp formed by each weft in the upper layer is equivalent to 17 warps, and the short crimp is equivalent to 6 warps.Claim 1
A double woven fabric for paper making described in . 6. A long crimp of the lower weft was formed on the running surface.
A double-woven fabric for papermaking according to any one of claims 1 to 5. 7. The double-woven fabric for papermaking according to any one of claims 1 to 6, wherein the lower layer weft is thicker than the upper layer weft. 8. Any one of claims 1 to 7, wherein the lower layer weft of the running surface is a polyamide weft and/or a polyester weft.
Double woven fabric for paper making as described in Section. 9. The double-woven fabric for papermaking according to any one of claims 1 to 8, wherein the lower layer weft on the running surface is a polyamide weft that is thicker than the lower layer polyester weft.