JPH0382888A - 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 upper-layer weft yarns weaving the initial warp yarn may be woven by the next adjacent warp yarn. Thereby, long crimps and short crimps are alternately arranged in the respective upper-layer weft yarns. Since the mutual long crimps and short crimps adjacently arranged in the adjacent upper-layer weft yarns 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 by the long crimps of the upper-layer weft yarns to prevent marks in the oblique direction from occurring in paper.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to i-products for paper manufacturing.

[Prior Art] In papermaking using a conventional fourdrinier, a slurry of paper stock is fed (jQ) to a running endless papermaking fabric.The papermaking fabric separates cellulose fibers from the slurry to form a wet paper web. 5 In other words, from this point of view, 1liII for papermaking
The material is acting as a filter for the formation of a wet paper web. The mesh openings, also called train holes, in the fabric function to separate water from the slurry. It is necessary to have good postural stability.

In paper manufacturing, there are some problems, especially paper manufacturing 1.
The following requirements are required for A-products: high paper stock retention, i.e., the paper stock should not run away from the papermaking surface, wire marks should not occur, and the reactor water resistance should be good and water retention should be small. , high abrasion resistance, good posture stability, etc.6 Various proposals have been made in the past in order to meet the above-mentioned demands for the #A material for paper manufacturing. 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 fewer flat spaces and dewatering takes place in three-dimensional spaces, resulting in slower dewatering compared to single-ply woven fabrics and better fiber retention. 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 that should exist between the warp yarns are partially recessed from the paper-making surface.

One attempt was to increase the number of weft yarns on the paper-making surface by placing floating yarns in the weft yarns, which are not woven in the intersecting shape of the warp and weft yarns that normally form woven fabrics. It was proposed to compensate for the depressions in the weft threads and form the paper-making surface using the weft threads. Although this proposal is an interesting technical idea in terms of increasing the number of weft threads on the paper manufacturing surface, it cannot be said to be sufficient yet. That is, the weft threads that are not woven into this bare structure are exactly the same as the tink yarns, which are moved by the fluid pressure applied to the weft threads when the slurry is fed to the papermaking fabric, resulting in so-called weft drift, which results in uneven weft threads. The paper-making surface cannot be maintained. If this type of floating yarn is provided between the upper wefts of a double structure, the reactor water resistance will be reduced, so the spacing between the wefts will have to be widened.

For this reason, the density method of the lower layer weft that forms the running surface is required.
4) The wear volume is reduced, the running life is significantly shortened, and there are two practical problems such as fibrillation of floating yarns due to showering.

It has been proposed to use multiple fabrics in order to maintain drainage properties, to form a fine mesh on the paper-making surface, and to provide IT abrasion resistance, but none have been found to be 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 reactor water resistance 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 structure in which the wefts collapse between the warps that form the paper-making surface in 411 double weft fabrics. , the paper-making surface always forms a flat surface by the crimps of the warp and weft, and a long weft crimp is 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. The present invention was completed by cutting the gaps between the crimps of the matching 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.

[Means for Solving the Problems] The present invention provides the following features: 1. The warp with the weft arranged in the upper 'F2 layer is 170n (n = 0, 2.4 or the same below 6), and the upper layer is A woven fabric with a repeating pattern of 2X (1,7+n) weft yarns, where the number of upper weft yarns is twice the number of lower weft yarns, and each upper weft yarn alternately crosses a different number of warp yarns. long crimps and short crimps are formed alternately, and long crimps and short crimps are adjacent between adjacent weft yarns, and the warp yarns have a repeating pattern in which one warp yarn is every 2X (17+n) upper weft yarns. , is woven into the fabric through the two of the two adjacent double-layer wefts, and the next adjacent warp crosses over the first warp or the first warp. A complete weave is formed on the paper-making surface, in which the book's upper weft threads are woven into the weft, and the wefts are woven into the weave sequentially in the same way up to the warp of the 17th → -n grain. A double-woven fabric for papermaking, in which every other weft thread is arranged, and each warp thread interweaves the lower weft thread at least once between the upper weft threads (17-1-n).

2. A fabric with 34 wefts and 17 warps in the upper layer, with a long crimp or 9 warps formed by each weft in the upper layer.
The double amount 'l for papermaking described in claim 1, which is the main part and is equivalent to a short crimp or six warp threads! I.

3. The upper layer has 38 wefts and 19 warp shafts, and each upper layer has a long crimp or warp 14 shafts.
The double-woven fabric for papermaking according to claim 1, wherein the short crimp is three warp threads.

4. It is a fabric with 42 wefts in the upper layer and 21 shafts in the warp, and the long crimp formed by each weft in the upper layer is 16 in the warp.
A double fa for paper making as described in claim (■), which is a short crimp or has four warp threads! I! J.

5. - 1st layer weft or 46 threads, warp is 23 shaft 1 or more, and each upper layer has a long crimp or warp 1 formed by each weft.
2. The papermaking double-woven fabric according to claim 1, wherein the short crimp is for 8 warps.

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

7. Claim 1, wherein 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 double woven fabric for papermaking according to 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.

9. The double layer 1111 paper manufacturing product 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.

Regarding j.

Since the present invention is a double-woven fabric with the above-mentioned tank structure, the paper-making surface is formed with rich weft yarns, and each weft yarn has long crimps and short crimps.
- A special addition in which the crimps are formed alternately and the long crimps and short crimps of the weft yarns are alternately arranged adjacently between adjacent upper weft yarns. The running surface is characterized by a weft density that is smaller than the papermaking surface. Also, each warp is
Two adjacent 1st layer wefts are woven at the same time. This special configuration provides the excellent effects described in the next section.

In the present invention, there are 34 upper wefts and 1 warp on the papermaking surface.
In the case of a 7-jab 1~ fabric, the upper weft forms a short crimp for 6 warps and a long crimp for 9 warps.
In addition, the upper layer weft on the paper making side is 38 and the warp is 19.
In the case of a woven fabric, the top weft is 0, a short crimp of 3 warps and a long crimp of 14 warp are formed, and the top weft is 42 and the warp is 21.
In the case of shaft fabrics, the upper weft yarns form short crimps of 4 warp yarns and long crimps of 16 warp yarns.
In addition, in the case of a fabric with 46 upper layer wefts and 23 warp shafts on the papermaking surface, the upper layer wefts are crimped as short as 8 warps,
Form a long crimp with 13 warp threads.

Next, the reason why phosphorus 1 must be formed in this manner 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 fabric, and is recessed from the papermaking surface to form a recess. To explain in a little more detail, the warp existing between the warps woven into the fabric by the upper weft is under the upper weft and pushes the upper weft upward, but in reality, the force pushing it down is greater than the force pushing it up. Therefore, 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 located under the upper layer weft 1 on the papermaking surface and pushes the upper layer spinning upwards, in other words, the longer the crimp formed by the upper layer weft, the greater the force applied to the upper layer yarn. Since the weft threads are pushed upwards, the depression becomes smaller.

The present inventors further conducted research and found that in order to prevent the double-layer weft from sinking and form a smooth paper-making surface without recesses, it was necessary to form a long crimp in the upper layer weft.
The present invention was completed by elucidating that it is necessary to form a crimp with a length of at least three warp threads.

” If the length of the crimp formed on the double-layer weft is less than three warps, structurally speaking, it will not be possible to completely prevent the upper-layer weft from collapsing, resulting in depressions, resulting in the formation of a completely smooth papermaking surface. I can't. This means that the range of the push-down blade of the warp that presses down the upper weft is about one warp on each side of the contact area of the upper weft where the warp touches, and the crimp formed by the upper weft is the third warp. It is logically understood that if it is more than the duty, the effect of the pressing blade on the warp threads will be reduced, so the depression of the upper weft threads will be smaller.

2. Polyamide yarn or polyester yarn is suitable as the yarn for weaving the fabric of the present 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 underline yarn.
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 JJI weaving 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. 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, the number of upper layer wefts is twice the number of warp shafts. The lower layer wefts are arranged every other upper layer weft and below the upper layer wefts.

The papermaking A-product of the present invention has the characteristics that the weft forming the running surface forms a long crimp, has a large effective wear-resistant volume, and has good wear resistance.

[Function 3 As described above, in the papermaking fabric of the present invention, each warp is woven with one warp or two adjacent upper layer wefts, and the next adjacent warp is woven with the first warp. By arranging the next two adjacent upper layer wefts after placing three from the upper layer wefts, long crimp and show 1 ~ crimp are alternately arranged on each upper layer weft, and also between the adjacent upper layer wefts. Since the long crimp and the short crimp are arranged adjacent to each other and the long crimp and the short crimp are prevented from being adjacent to each other, the crimp of the warp formed on the upper weft of the paper-making surface is formed in four diagonal directions. It is shredded by the alignment or the long crimp of the upper weft yarns and does not produce diagonal marks on the paper.

Wire marks that occur on paper are conspicuous because the paper's thickness, irregularities, etc. are arranged in a four-dimensional pattern, and the length of the wire mark is 12 meters. Cutting it off is extremely rational and effective.

In addition, the paper-making surface formed by the high-density upper layer wefts has good stock retention properties during papermaking, and has a uniform P-water content with no pulp fiber punctures and wire marks. This not only prevents the occurrence of drying but also improves paper manufacturing yield and paper smoothness.

Furthermore, since the lower layer weft forms a long crimp, it has good crimpability, and since thick wefts can be arranged, combined with the long crimp, the wear-resistant volume of the weft can be greatly increased. Abrasion 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.

Further, in the present invention, since the lower layer weft has a density I/2 of the upper layer weft, the reactor water resistance is small, the shower effect is good, and the water retention is small. The structure of the m-product will be specifically explained in Examples based on the drawings.

Embodiments] Next, embodiments of the present invention will be specifically described with reference to the drawings, showing design drawings showing a complete #Il weave.

5. Each design drawing is a complete design drawing showing the paper-making surface of the paper-making product of the present invention. Therefore, the lower layer wefts are arranged every other and below the upper layer wefts of the papermaking surface structure. 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. Therefore, when considering the lower layer weft, in the case of an odd number of shafts, the lower layer weft will not be repeated and a complete structure will not be obtained unless the number of wefts is twice the number of shafts. However, in the examples, the lower layer weft will also be included in the explanation. , the number of upper layer wefts is 2 of the number of shafts
(It is marked @ as 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 indicated by dashed Arabic numerals 1', 2', and 3'. The lower wefts are not shown in the drawings or in the explanation by Arabic numerals with a double tarash, e.g. 1'', 2'', 3''. Also, in the drawings, an x indicates a position above the warp or the upper weft. The x in the bracket also indicates the position where the upper layer weft is woven into the weave by the warp. Also, the circle indicates the position where the lower N 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 shafts is odd, there are 17 warp shafts and 3 weft shafts.
The complete structure of the paper-making surface is shown in four lines.

The upper layer weft 1' in FIG. 1 is woven into two identical structures by warp 1 and warp 11. Then, a long crimp of 9 warps is formed between warp 1 and warp 11, 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.

Further, the upper layer weft 2' is woven into the structure twice by warp 1 and warp 8. Then, a short crimp of 6 warps is formed between warp 1 and warp 8, and a long crimp of 9 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.

Similarly, the other upper layer yarns 3' to 34' form short crimps for 6 warps and long crimps for 9 warps, respectively.

7 And between the upper wefts 1' and 2', the upper weft 1' forms a long crimp between the warps 1 and 11, and the upper weft 2' forms a short crimp between the warps 1 and 8. There is. 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 weft 1'2' and over 18' and 19', and this I[J
Two upper layer wefts that are in contact with each other are woven into the fabric. Then, the lower layer wefts 1'' and 27'' are woven into the A weave.

Further, the warp threads 2 are woven into the fabric by passing over the next two adjacent upper layer wefts 6' and 7', which are placed three from the upper layer wefts 2', which have been woven by the warp yarns 1.

In addition, the warp (2) is woven into the fabric by passing over the next two adjacent upper layer wefts 23' and 24' placed three from the woven upper layer weft 19'. The lower layer wefts 15'' and 33'' are then woven into the fabric.

The other 3 to 17 warps are woven into the fabric in the same way, passing over the next two adjacent upper layer wefts, which are 3 of the 4 double layer wefts woven by the adjacent 8 warps.
Two T' layer wefts are woven into the same structure.

In this way, the arrangement of diagonal crimps formed by adjacent warp yarns on the papermaking surface is disrupted, the regularity of the crimps formed by the warp yarns on the papermaking surface is disrupted, and the generation 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, when the paper-making surface is formed by weft yarns, the paper size directly pierces the train holes existing between the warp yarns and does not block the train holes, which has the effect of significantly improving the trainability of the fabric. In the example shown in Fig. 1, where it is understood that long weft crimps are always interposed between the crimps formed on the paper-making surface to prevent fibers from getting stuck, the warp 1 is 1''. Weave the lower weft of 27″ into the weave, and the adjacent warp 2 is 15″
The lower wefts of 3" and 33" are woven into the weave, and the adjacent warp 3 weaves the lower wefts of 3" and 21" into the weave.In this way, the weaving positions of the lower wefts of the adjacent warps are different, Each lower weft is woven twice in a complete structure, forming a long crimp of 9 warp threads and a short crimp of 6 warp threads.In this example, the stiffness of the fabric is affected by the large number of times the lower weft is woven. It has great postural stability.

The embodiment shown in Fig. 2 has the same two warp threads 1-7 as the embodiment shown in Fig. 1.
The complete structure of a papermaking fabric is shown in which the weaving positions of the lower layer wefts are different in a fabric with 34 shaft wefts.

The structure of the upper layer is the same as the embodiment shown in FIG. Also,
The arrangement of diagonal crimps formed by adjacent warp threads on the paper-making surface is disrupted, the regularity of the crimps formed by the warp threads on the paper-making surface is disrupted, and the generation of wire marks is prevented.

Looking at the underlying structure, warp 1 has 11″ and 15″
Weave the lower wefts of 3'', 27'' and 33'' into the weave, and the adjacent warp 2 weaves the lower wefts of 3'', 15'', 21'' and 33'' into the weave, and the adjacent warp 3 weaves 3'' The lower layer wefts of 9'', 21'' and 25'' are woven into the structure, and the lower layer wefts form a long crimp of 8 warps and a short crimp of 5 warps.Then, the adjacent pair of warps The weft threads are woven into the fabric.

In other words, in this example, since the lower layer weft yarns are woven into two identical structures by a pair of adjacent warp yarns, it is understood that the crimpability of the lower layer weft yarns is very good and thick weft yarns can be used. Moreover, it is characterized by forming an extremely long crimp. Since the weft yarns of the lower layer are interwoven twice by a pair of warp yarns, the fabric has high rigidity and excellent posture stability.

The embodiment shown in FIG. 3 does not show the complete structure of the papermaking fabric, which is the same as the embodiment shown in FIG. 1, but has 17 warps, 34 shafts, and 34 wefts, but differs in the weaving positions of the lower layer wefts.

-LN's 4fi weave is the same as the embodiment of FIG.

The upper layer weft 1' in FIG. 3 is woven into two identical structures by warp 1 and warp 11. Then, a long crimp of 9 warps is formed between warp 1 and warp 1.1, and is repeated to the right or left of this complete design drawing. Form a short crimp. The long crimp of the layer weft 1' and the short crimp of the upper layer weft 2' are adjacent to each other.

In addition, the upper N weft 2' is woven into Mlm twice by the warp 1 and the warp 8, and the warp 6 is woven between the warp J and the warp 8.
A short crimp corresponding to the main body is formed, and a long crimp corresponding to nine warp threads is formed between the weaving portion shown in the complete design diagram repeated to the right or left of this complete design diagram.

Similarly, the upper Nn yarns of 3' to 34' of the curve form a short crimp for 6 warps and a long crimp for 9 warps, respectively, and similarly, the wing crimp and long crimp of the upper weft, which are 19tf JH, are adjacent to each other. I know what you're doing.

The warp passes over the upper wefts L', 2' and 18' and 19', and these two adjacent upper wefts are woven into the fabric. Then, lower layer wefts 15'' and 27'' 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 6' and 7' placed three from the upper layer wefts 22' woven by the warp yarns 1.

In addition, three yarns from the upper layer weft 19' woven by the warp 1 are jd
of the next two adjacent upper wefts 23' and 24'.
It is woven into the organization through two steps. And the lower layer weft 3
It is woven into the tissue at the `` and 15'' positions.

The other 3 to 17 warps are similarly woven into the fabric by passing over the next two adjacent upper wefts placed three times from the upper 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 three times from the upper weft woven by the adjacent warp, and is woven in a 4 fiitl+ direction, in the diagonal direction that the adjacent warps form on the paper-making surface. The arrangement of the crimps in the paper is disrupted, and the regularity of the crimps formed by the warp yarns on the paper-making surface is disrupted, thereby preventing the occurrence of wire marks. Also,
The paper-making surface is a flat surface created by long crimps of the weft threads, and there is no depression of the weft threads between the warp threads on the three paper-making faces. Furthermore, it is understood that long weft crimps are always interposed between the crimps formed by adjacent warp yarns on the paper-making surface, and each lower weft yarn is It is woven once into the fabric by a pair of warp threads, and warp thread 15
It forms a long crimp. In other words, in this example, the lower layer weft is woven once into the structure by a pair of adjacent warp yarns, so it is understood that the lower layer weft has very good clinging properties and can be used with a large weft force of 5 turns. Moreover, it is characterized by forming an extremely long crimp. In addition, since the weft yarns of the lower layer are woven into a #ll weave by a pair of adjacent warp yarns, the woven fabric has great rigidity and excellent posture stability.

The example of FIG. 4 shows the complete construction of a woven fabric with 19 warp yarns and 38 weft yarns.

The upper layer weft 1' in Fig. 4 is twice M by warp 1 and warp 16.
It is woven into the i-weave. Then, a long crimp of 14 warps is formed between warp 1 and warp 16, and is repeated to the right or left of this complete design drawing. Forms a short crimp.

Further, the upper layer weft 2' is woven twice into the #iI weave by warp J and warp 5. Then, a short crimp of 3 warps is formed between warp 1 and warp 5, and a long crimp of 14 warps is formed between the weaving area shown in the complete design drawing which is repeated on the right or left of this complete design drawing. Forming a crimp.

''A long crimp of the double layer weft 1' and a short crimp of the upper layer weft 2' are adjacent.

Similarly, the other upper layer wefts 3' to 38' form short crimps corresponding to 3 warps and long crimps corresponding to 14 warps, respectively. It can be seen that 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 ■7'' and 3■'' are woven into the fabric.

In addition, the warp 2 is interwoven with the next two adjacent upper wefts 6' and 7 placed three from the upper weft 25' woven by the warp 1.
' and over the next two adjacent upper wefts 25' and 26' placed three from the upper weft 21' woven by the warp 1, and weave these two adjacent upper wefts into the fabric. There is. The lower layer wefts 3'' and 17'' are woven into the II weave.

Similarly, each of the other three or one warp threads is woven into the structure by passing over the next two adjacent upper weft threads placed three from the upper weft thread woven by the adjacent warp thread. And the lower layer weft is woven into two identical structures.

In this way, each warp yarn passes over the next two adjacent upper layer wefts, three of which are placed from the upper layer weft woven by the adjacent warp yarn, and is woven into the fabric, thereby forming the adjacent warp yarns on the paper making surface. The arrangement of the crimp in the diagonal direction is interrupted, and the regularity of the crimp formed on the paper making surface by the warp yarns is disrupted, thereby preventing the occurrence of wire marks. In addition, the paper-making surface is formed with a flat surface by the long crimp of the weft threads, and there is no depression of the weft threads between the warp threads on the paper-making surface.Furthermore, there is always a long crimp between the adjacent warp threads formed on the paper-making surface. It is understood that there is a weft crimp intervening to prevent the fibers from getting stuck.

The lower layer weft 1'' is woven into the structure at one point by a pair of warp threads 13 and 14, and the warp thread 17
It forms a long crimp.

In this embodiment, the lower layer weft is completely 411 by a pair of warps.
It is woven once and is characterized by its high rigidity and excellent posture stability.

The embodiment shown in FIG. 5 shows the complete structure of another embodiment of a m-piece having one warp and 38 shafts and wefts.

The upper layer weft 1' in Fig. 5 is twice 4 times by warp 1 and warp 16.
It is woven into the fl weave. And warp ■ and warp 16
A long crimp of 14 warp threads is formed between them, and a short crimp of 3 warp threads is formed between the weaving parts shown in the complete design drawing repeated to the right or left of this complete design drawing.

In addition, the upper layer weft 2' is woven into the structure twice by warp 1 and warp 5. Then, a short crimp of 3 warps is formed between warp 1 and warp 5, and a long crimp of 14 warps is formed between the weaving area shown in the complete design drawing which is repeated on the right or left of this complete design drawing. Forming a crimp. Then, a short crimp of upper weft 1′ and upper weft 2
′ is adjacent to the long crimp.

Similarly, the other upper layer wefts 3' to 38' form short crimps corresponding to 3 warps and long crimps corresponding to 14 warps, respectively. It can be seen that the adjacent upper layer wefts have short crimps and long crimps adjacent to each other.

The warp 1 passes over the upper wefts 1', 2', 20', 21', and weaves 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 21 woven by the warp 1.
The fabric is woven into the fabric by passing over the next two adjacent upper layer wefts 6', 7' and 25', 26' placed three from each of '. And the lower layer cotton 8 threads 19" and 35" are woven into 411m.

Similarly, each of the three to one warp yarns of the target is woven into the fabric by passing over the next two adjacent upper weft yarns placed three times from the upper weft yarn woven by the adjacent warp yarn. And the lower layer weft is woven into two identical structures.

In this way, each warp thread passes over two adjacent upper weft threads placed three times from the upper weft thread woven by the neighboring warp threads into the fabric, thereby creating a diagonal direction formed by the adjacent warp threads on the paper-making surface. An array of crimps is shredded,
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 is flat due to 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, there are always long weft threads between the crimps formed by adjacent warp threads on the paper-making surface. The lower weft 1'', which is understood to be interposed by a crimp to prevent fibers from sticking, is woven into the fabric at two places by warp threads 6 and 18, and between these warp threads there are 9 A long crimp is formed, and a short crimp of six warp yarns is formed between this weaving site and the weaving site shown in the complete design drawing repeated to the right or left of this complete design drawing.

In the embodiment shown in FIG. 5, the number of weaving of the lower layer weft is large, so the woven fabric has high rigidity and excellent posture stability.

The example of FIG. 6 shows the complete construction of a 21 shaft, 42 weft fabric.

The upper layer weft 1' in FIG. 6 is woven into the same structure by warp 1 and warp 5. Then, a short crimp of 3 warps is formed between warp 1 and warp 5, and a long crimp of 16 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.

In addition, the upper weft 2' is woven into the fabric twice with the warp 1 and the warp 186, and forms a long crimp of 16 warps between the warp 1 and the warp 18, and the right side of this complete design drawing. Or, a short crimp of 3 warp threads is formed between the weaving part shown in the complete design drawing repeated on the left.

Similarly, the other upper layer wefts 3' to 42' form short crimps corresponding to 3 warps and long crimps corresponding to 16 warps, respectively.

Then, between the upper weft 1' and 2', a short crimp formed between the upper weft 1' or the warp 1 and 5 and the upper weft 2'
is adjacent to the long crimp formed between warp threads 1 and 18. In this way, each upper layer weft has a respective long crimp and short crimp, or a short crimp and a long crimp adjacent to each other.

The warp thread 1 passes over the upper weft threads 1' and 2' and over the upper weft threads 22' and 23', and these two adjacent upper weft threads are woven into the fabric. Then, lower layer wefts 11'' and 29'' are woven into the structure.

Further, the warp 2 is woven into the fabric by passing over the next two adjacent upper layer wefts 6' and 7', which are placed three from the upper layer weft 2', which are woven into the warp 1.

In addition, the warp 1 passes over the next two adjacent upper layer wefts 27' and 128' placed three from the woven upper layer weft 23' and is woven into the fabric. The lower layer wefts of 13'' and 37'' are woven into the fabric.

The other 3 to 21 warps are similarly woven into the fabric by passing over the next two adjacent upper wefts placed three times from the adjacent warp or the upper weft interwoven. 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 three times from the upper weft woven by the adjacent warp, and is woven into the fabric, thereby creating a diagonal direction that is formed on the paper-making surface by the adjacent warp. Array of crimp or shredded,
The regularity of the crimp formed on the warp or paper making surface is disrupted to prevent wire marks from occurring. In addition, the paper-making surface is formed with a flat surface by long crimping of the weft threads, and the weft threads do not sag between the warp threads on the paper-making 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.

2 In the embodiment of FIG. 6, warp 1 weaves the lower wefts of 11" and 29", and the adjacent warp 2 has 13"
The lower layer wefts of 21'' and 39'' are woven into the weave for the adjacent warp 3. In this way, the weaving positions of the lower layer wefts of the adjacent warps are different.The lower layer wefts are completely The structure is woven twice, forming a long crimp for 11 warp threads and a short crimp for 8 warp threads.In this example, the lower weft threads are woven in a large number of times, so the fabric has a high rigidity and posture stability. Are better.

The embodiment shown in FIG. 7 shows a complete 4 fl weave of a papermaking fabric, which is the same as the embodiment shown in FIG. 6 but has 21 warp threads and 42 weft threads, but differs in the weaving position of the lower layer weft threads.

The structure of the upper layer is the same as the embodiment shown in FIG. The same effect is achieved by disrupting the diagonal arrangement of crimps formed by adjacent warp yarns on the papermaking surface, disrupting the regularity of the crimps formed by the warp yarns on the papermaking 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 threads3, and the weft threads do not sag between the warp threads on the paper-making surface.6Furthermore, there are always long weft threads between the crimps formed by adjacent warp threads on the paper-making surface. It is the same because there is a crimp intervening to prevent the fibers from getting stuck.

Warp 1 weaves the lower wefts of 7'', 15'', 31'' and 39'' into the weave, and the adjacent warp 2 is 1.5''
The lower wefts of ", 23", 33" and 41" are woven into the structure, and the adjacent warp threads 3 are 7", 17", 25" and 41".
The lower layer wefts are woven into a 411 weave, and the adjacent warp yarns 4 weave the lower layer wefts 1'', 9'', 25'' and 33'' into the weave.

In this way, the adjacent warp yarns form a pair to weave the lower layer weft yarns. In other words, in this example, the lower layer weft yarns are woven into the same structure by a pair of adjacent warp yarns, so the crimpability of the lower layer weft yarns is extremely high. It is understood that thicker weft threads can be used. Moreover, it is characterized by forming a long crimp, and has extremely good wear resistance.

In the embodiment shown in FIG. 8, warp 23, shaft 1 to weft 464 Showing the complete organization of the book's fabric.

The upper layer weft 1' in FIG. 8 is woven into the structure twice by warp 1 and warp 10. Then, a short crimp for 8 warps is formed between warp 1 and warp 10, and is repeated on the right or left of this complete design drawing. A long crimp of 13 warp threads is formed between the weaving area shown in the design.

Further, the upper layer weft 2' is woven into the structure twice by warp 1 and warp 15. Then, a long crimp of 13 warps is formed between warp 1 and warp 15, and a short crimp of 8 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 Nn yarns of the curves 3' to 46' form short crimps for 8 warps and long crimps for 13 warps, respectively. It can be seen that adjacent upper layer wefts have short crimps and long crimps adjacent to each other.

5. The warp 1 passes over the upper layer wefts 1', 2', 24', and 25', and these two adjacent upper layer yarns are woven into a lll1 weave. Then, weave the lower layer wefts 9″ and 37″ into the weave G.
: Incorporated.

Also, warp 2 is woven by warp 1.'': Layer cotton yarn 2' and 2
Starting from 5', the weft passes over the next two adjacent upper wefts 6', 7', 29', and 30' placed three times each, and these two adjacent upper wefts are woven into the fabric. The lower wefts, 19″ and 37″, are then woven into the fabric.

In the same way, each of the warp threads 3 to 23 of the song is woven from the next two adjacent warp threads, which are placed three times from the upper weft thread woven by the neighboring warp thread.]
It is woven into the fabric by passing over the double-layered weft. The lower layer weft is woven into the fabric twice.

In this way, each of the warp or the adjacent warp, the next two adjacent upper wefts placed three times from the woven upper N weft -
By weaving it into the fabric through the paper, the diagonal crimp arrangement that adjacent warp threads form on the papermaking surface is shredded.
The regularity of the crimp formed by the warp yarns on the paper making surface is disrupted, and the occurrence of wire marks is prevented. 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, 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 actual rudder example shown in FIG. 8, a pair of adjacent warp threads interweave the weft threads of the lower layer. In other words, in the actual example of , the weft of the lower layer is woven once #fli at the same position by a pair of adjacent warp yarns, so the crimpability of the weft of the lower layer is very good.
Thick wefts can be used and extremely long crimps can be formed.

The actual rudder example in FIG. 9 shows the complete structure of a fabric with 23 warp threads and 46 weft threads.

The upper layer weft 1' in Fig. 9 is twice M by warp 1 and warp 10.
It is woven into the i-weave. And warp 1 and warp 1.0
A short crimp of 8 warp threads is formed between the two, and a long crimp of 13 warp threads is formed between the weaving portion shown in the complete design drawing repeated to the right or left of this complete design drawing.

7 In addition, the upper layer weft 2' is woven into the structure twice by warp 1 and warp 15. Then, a long crimp of 13 warps is formed between warp 1 and warp 15, and a short crimp of 8 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.

and] a short crimp of double layer weft 1' and upper layer weft 2'
Adjacent to long crimp.

Similarly, the other upper layer wefts 3' to 46' form short crimps corresponding to 8 warps and long crimps corresponding to 13 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' and 2' and over 24' and 25', weaving these two adjacent upper wefts into the fabric. Then, the lower layer weft is 5", 21/', 33
It is woven into 411 weave at the `` and 39'' positions.

In addition, the warp 2 is the upper layer weft 2' and 25 woven by the warp 1.
The two adjacent upper layer wefts are weaved by passing over the next two adjacent 8'' double layer cotton yarns 6' and 7' and over the upper Nn yarns 29' and 30', which are placed three times from ''. It is incorporated into And lower layer weft 3", 15" and 2
It is woven into the tissue at the 1″33″ position.

The other 3 to 23 warps are similarly woven into the fabric by passing over the next two adjacent upper wefts placed three times from the upper weft woven by the adjacent warp. The lower weft threads are woven into the same four-layer structure. The lower layer weft 1″ is 1
The pair of warp threads 13.14 and 20.2■ are woven into the fabric at two locations, forming a crimp of five warp threads between the pair of warp threads 13, i4 and 20.21, and this complete design drawing A crimp for 14 warp threads is formed between the weaving area shown in the complete design drawing that repeats on the right or left side.

In this way, by weaving each warp thread into the fabric by passing over the next two upper layer wefts placed three times from the upper layer weft woven by the adjacent warp yarns, the adjacent warp yarns form a diagonal direction on the paper making surface. The arrangement of the three crimps is disrupted, and the regularity of the crimps that the warp yarns form on the papermaking surface is disrupted, thereby preventing the formation of wire marks. In addition, the paper-making surface is made flat by long crimps of cotton yarn, and the weft threads do not sag between the warp threads on the paper-making 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 this example, since each lower layer weft is woven into the Mi weave by a pair of adjacent warp yarns, it is understood that the crimpability of the lower layer weft is very good and thicker wefts can be used. Moreover, it is characterized by the formation of an extremely long crimp, making it possible to greatly increase the wear-resistant volume.

10 to 12 are cross-sectional views of the papermaking fabric of the present invention, or include a portion of the complete structure that is repeated for convenience of explanation. For example, the warp threads 18 to 18 in Figure 10 are
Number 20 is the warp thread, which is shown in complete structure in the garden, and is shown here.

FIG. 10 shows a cross-sectional view of the papermaking product shown in FIG. 1 taken along the line 1--■'0. Upper layer weft 1
1' is woven with warp 3.13.20, warp 4-1
Add a long crimp for 9 warp threads to L of 2, and warp threads 14~
A short crimp of 6 warp threads is formed on top of 19.

On the other hand, the lower weft 11'' is woven into the fabric by the warps 1, 8 and 18, forming a short crimp of 6 warps between the warps l and 8, and 9 warps of the warp between the warps 8 and 18. Forms a long crimp.

FIG. 11 shows a cross-sectional view of the paper-making product shown in FIG. 2 taken along the line ■--■'. The upper layer weft 33' is the warp 4.14.21
A long crimp of 9 warps is formed on warp threads 5 to 13, and a short crimp of 6 warp threads is formed on warp threads 5 to 20.

On the other hand, the lower layer weft 33'' is a pair of warps 1.2 and 8, and 1.
8.1 is woven into the fabric, forming a short crimp of 5 warps between warp threads 1.2 and 8.9;
A long crimp of 8 warps is formed between 9 and 18.19.

1. FIG. 12 shows a cross-sectional view of the paper manufacturing product shown in FIG. 3 taken along the line m-nr'. "The two-layer weft 15' is the warp 7.14.
24, a short crimp of 6 warps is formed on the warp threads 8 to 13, and a long crimp of 9 warp threads is formed on the warp threads 15 to 23.

On the other hand, the lower layer weft 15'' is connected to the adjacent pair of warps 1.2 and 1.
8.1-9 is woven into the structure to form a long crimp of 15 warp threads. From the cross-sectional views of Figures 1-0 to 12, it is clear that the papermaking fabric of the present invention It can be seen that it is formed by crimps in which long and short upper layer wefts are arranged in a bridge-like manner alternately, forming a flat surface to prevent wire marks. It can also be seen that a long crimp of the lower layer cotton yarn is formed on the running surface, increasing the abrasion resistance.

FIG. 13 is a complete design drawing showing a conventional 16-shaft double weft fabric.

The two-layer weft 1' in FIG. 13 is woven into the same structure by the warp 3, the warp 6, the warp 11, and the warp 14. And between warp 3 and warp 6 and warp 11
A crimp for two warp threads is formed between the warp threads 6 and 14, and four warp threads are formed between the warp threads 6 and 11, and between the weaving area shown in the complete design drawing that repeats to the right or left of this complete design drawing. Form a minute crimp.

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 crimp for two warp threads is formed between the warp threads 6 and the warp surplus, and between the weaving portion shown in the complete design diagram repeated to the right or left of this complete design diagram. In addition, the upper weft 2' forms a crimp for four warps between the warp 1 and the warp 6 and between the warp 9 and the warp 14. Similarly, the other 3' to 16' upper wefts also form a crimp for four warps. A crimp for four warp threads and a short crimp for two warp threads are formed.

As can be seen from this prior art example, the upper wefts of the conventionally known papermaking fabrics with 16 shafts form a crimp with a length of two warps on the papermaking surface.

Figure 14 shows the conventionally known ■6 shaft l shown in Figure 13.
It is a sectional view taken along the line IV-TV′ of the fabric of ~,
This indicates that the upper weft or warp threads are woven into the fabric. The upper layer weft 3' is woven into #I1m four times by the warps 1, 4, 9, and 12, and is pushed downward. On the other hand, the warp threads 2.3 push the upper weft threads 3' upward, but the force pushing down the warp threads 1 and 4 is large, so they are pushed downward, and the upper weft threads 3' are located at the position where the upper surfaces of the warp threads 1 and 4 are connected. If the crimp of the upper weft is only as long as two warp threads, there will be a depression 26 on the paper making surface.
It can be seen that the wire marks are formed and the paper grains sneak into the wire marks.

In FIG. 10, which is an embodiment of the present invention, the length of the crimp of the upper layer weft is the length of 4 warps even if the shorter crimp is used, and in this case, the paper making surface becomes smooth without the upper layer weft sinking. Teikoto Ritsu II? I! [Effect 1] Next, in order to explain the present invention in detail, the results of a comparative test on a specific fabric 4 will be shown.

Comparison test @1 1111i0 for paper making with 17 warps and 34 upper wefts of the present invention shown in FIG. Table 1 shows the results of the comparative test with Example 1). All threads used were monofilament.

(Leaving space below) Table 1 6 (Note) PET: Polyester PA: Boryamide Pulp liquid Reactor water time: Disintegrate newspaper waste and freeness 17
0.04% concentration pulp liquid prepared as 0ml
1i1! The water level is 300 mn+ on IJIJ, and the time until the water level reaches zero when the pulp liquid is poured onto the fabric surface at an angle of i5° from the perpendicular to the fabric surface.

From the above test results, the papermaking fabric of the present invention has furnace water resistance,
It is clear that the valve yield, smoothness, etc. are significantly better than the conventional i# product.

[Brief explanation of drawings]

7 FIGS. 1 to 9 are complete design drawings showing an embodiment of the present invention. FIG. 10 is a cross-sectional view of the fabric shown in FIG. 1 taken along the r-1' line, and FIG. 11 is a cross-sectional view of the fabric shown in FIG.
It is a horizontal view cut along a line. Also, Figure 12 is # of Figure 3! T! FIG. 2 is a cross-sectional view taken along line mm' of J. FIG. 13 is a complete design drawing of a conventional papermaking fabric with a double weft of 16 shuffles. Figure 14 shows the JV fabric shown in Figure 13.
- It is a cross-sectional view cut along the JV' line. The x in the drawings indicates a position above the warp or upper weft, but the x also indicates a position woven into the fabric by the upper weft or warp. Moreover, ○ indicates the position where the lower layer weft is woven into the fabric by the warp. 1 to 23...Warp 1' to 46'...Upper weft 1'' to 45'' (odd number)...Lower weft 8 2nd [gl JP-A-3-82888 (14) Figure 3 Figure 4 Unexamined Japanese Patent Publication No. 82888 (lb) Figure 5 Negative'! 61JJ JP 3-82888 (16) 71'l! 71Σl Figure 8 JP-A-3 82888 (17) Figure 91 ☆ Be

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, 4, or 6, the same applies hereafter), and the fabric has a repeating pattern of 2×(17+n) upper layer wefts, 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 threads is woven into the fabric over two adjacent upper weft threads, and the next adjacent warp thread is woven from the two upper weft threads that the first warp has crossed over. It is woven into the fabric by passing over the next two upper layer wefts after placing the three, and then in the same way, it is woven into the fabric until 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 for 9 warps, and the short crimp is for 6 warps, according to claim 1. Double woven fabric for paper making. 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 14 warps, and the short crimp is equivalent to 3 warps.Claim 1
A double woven fabric for paper making described in . 4. The fabric has 42 wefts in the upper layer and 21 shafts in the warp, and the long clip formed by each weft in the upper layer is equivalent to 16 warps, and the short crimp is equivalent to 4 warps.Claim 1
A double woven fabric for paper making described in . 5. 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 13 warps, and the short crimp is equivalent to 8 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.