JP2004052188A - Multilayer woven fabric for industrial use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woven fabric for industrial use, having uniform water filtration degree, strong bonding force and excellent surface smoothness and produced by using a pair of yarns for binding a warp and a ground yarn as a set and connecting the upper side layer to a moving-face side layer while forming an upper side face by weaving with an upper woven fabric. <P>SOLUTION: The multilayer woven fabric for industrial use is provided with at least an upper face side layer and a moving-face side layer connected with each other by a yarn binding warp-ground yarns weaving the upper face side layer and the moving face side layer. The yarn for binding a warp and a ground yarn is used at least as the upper face side warp. The moving face side warp passes under a plurality of consecutive moving face side wefts to form a long crimp at the moving face side. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to industrial fabrics such as papermaking fabrics, conveyor belts, and filter fabrics.
[0002]
[Prior art]
Conventionally, woven fabrics woven with warp and weft have been widely used as industrial fabrics.For example, they have been used in many other fields such as papermaking wires, conveyor belts, filter cloths, and are suitable for applications and use environments. Woven fabric properties are required. In particular, the requirements for papermaking wires used in the papermaking process of dewatering the raw materials using the mesh of the fabric are strict, and the fabric has excellent surface properties without transferring the wire mark of the fabric to the paper. There is a demand for a woven fabric having such a rigidity that it can be suitably used even in an unfavorable environment, and a woven fabric capable of maintaining the conditions required for producing good paper for a long period of time. In addition, fiber support, improvement in papermaking yield, good drainage, abrasion resistance, dimensional stability, running stability, and the like are required. Further, in recent years, the speed of papermaking machines has been increased, and accordingly, the demands on papermaking wires have become more severe.
As described above, most of the demands for industrial woven fabrics and their solutions can be understood by describing papermaking woven fabrics, which are strictly required among industrial woven fabrics. Therefore, the present invention will be described below with representative paper woven fabrics.
For example, when the papermaking speed increases, the dewatering speed necessarily increases, and it is necessary to increase the dewatering power. As a result, the removal of fibers and fillers and the occurrence of wire marks become remarkable, so that further improvement in fiber supportability and surface properties is required. In addition, if the wetting paper is deeply inserted into the papermaking fabric or if the fibers are inserted, there is also a problem that the wet paper web removability when transferring the wet paper to the felt is deteriorated. The wet paper web remaining on the woven fabric is pressed against the woven fabric surface by the dewatering force, so that the yarn gets stuck in the wet paper web in the area where the yarn exists, and conversely, the wet paper web is meshed between the meshes where there is no yarn. This is because a thread and a mesh mark are generated on the surface of the wet paper web. Although it is impossible to completely eliminate the wire mark, in order to make it as small and inconspicuous as possible, it is necessary to make the surface of the upper layer of the fabric fine, and to improve the surface smoothness and the fiber supportability. However, fine woven fabrics, which emphasize surface properties and fiber supportability, are basically woven with small-diameter yarns, and thus have poor abrasion resistance.
Further, since the papermaking fabric travels at a high speed, a phenomenon in which the fabric gradually wears due to friction with a roll or the like on the running surface in contact with the machine is observed, and the life may be exhausted due to the abrasion. Various measures are required to improve the abrasion resistance, such as changing the weave structure to a weft abrasion type structure or changing the material of the yarn. In particular, a method of using a yarn with a large wire diameter to provide a wear-resistant structure Are generally used. However, although a yarn having a large wire diameter has improved wear resistance, it has been difficult to obtain excellent surface properties.
In order to solve both problems of surface properties and abrasion resistance, two fabrics composed of different warps and wefts are used for the upper surface layer and the running surface side layer, respectively, and the fabrics of both layers are connected. Two-layer fabrics integrated by knotting have been used. This method has an effect that a woven fabric according to each required performance can be adopted. A dense upper surface was formed on the upper surface side layer using a warp and a weft having a small wire diameter, and a running surface having high wear resistance was formed on the running surface side layer using a warp and a weft having a large wire diameter. As the binding yarn, a yarn having a smaller diameter than the upper surface side warp and the upper surface side weft is generally used in order not to lower the surface property. For the upper surface side structure, plain weave is often used to form a dense surface, but in practice, since a binding yarn is used to interweave two layers, a binding yarn is sometimes applied to the substantially plain weave surface. Will be formed. Since the binding yarn also has a portion that appears on the surface, it is not preferable to use a yarn having an excessively large wire diameter due to a problem of surface smoothness.
[0003]
In addition, when used as a normal papermaking fabric, tension is often applied in the warp direction when used, and the warp yarn is hardly loosely moved by running of the fabric because the warp direction yarn is always in tension. However, binding yarns that are often placed between wefts due to problems such as weaving properties and fiber supportability, elongate when tension is applied or the binding yarns are rubbed between the upper side layer and the running surface side layer There has been a problem that internal abrasion occurs and a gap is generated or separated between the fabrics. This is because the endless woven fabric runs on several rolls, and at the part where the woven fabric comes into contact with the roll, the two-layer woven fabric is curved along the arc of the roll, and the perimeter difference between the layers of the woven fabric is different. Occurs. As a result, the binding yarn interwoven between the layers is rubbed, and internal wear occurs. Internal wear is often seen in binding yarns having a small wire diameter used for improving surface properties. The binding force of the binding layer between the upper surface side layer and the running surface side layer of only the binding yarn having a small wire diameter was insufficient. In addition, the binding yarn is entangled with the yarn of the upper layer to connect the two fabrics, and the binding surface draws the yarn by the binding force, thereby giving a dent to the upper surface and deteriorating the surface property of the fabric. There was also.
Therefore, a multilayer fabric using a warp ground yarn binding yarn in which the upper surface side layer and the running surface side layer are woven while forming the upper surface side surface on the warp yarn has been developed. In the upper surface side layer, an upper surface side warp and a warp ground yarn binding yarn were used as the warp forming the upper surface side surface, and the upper surface side surface was formed by weaving with the upper surface side weft. The running surface side layer was formed by a running surface side warp and a running surface side weft. Further, for the purpose of improving the binding force and making the openings even, a woven fabric or the like in which all of the warps forming the upper surface side layer have a warp ground yarn binding yarn has been developed.
By using a warp ground yarn binding yarn as the binding yarn for weaving the two layers in this way, the binding force is strengthened to prevent the occurrence of internal abrasion, and the woven fabric does not deteriorate the surface properties. Can be. However, the multilayer woven fabric had problems other than the binding force and surface properties. For example, even with a structure using a warp ground yarn binding yarn, if the dewatering property is not uniform, a mark may be given to wet paper. This may be due to the fact that the running surface side layer has a weft wear type structure in order to improve wear resistance. In many cases, the running surface of a papermaking fabric or the like, which is in contact with a machine, is of a weft wear type so that the life of the papermaking fabric or the like does not expire. Usually, the woven fabric runs along the warp direction with tension applied in the warp extending direction. However, if the warp is cut due to abrasion or the like, it cannot be used any more. In order to reduce the abrasion of the warp, the wear is mainly applied to the weft, so that the warp becomes difficult to cut. However, in this weft wear type structure, a groove in the width direction is generated between the wefts, and it becomes difficult for a part of a dewatering device such as a foil or a blade to enter the groove like a wedge and travel smoothly. In some cases, it was impossible to continue use due to severe abrasion as if the lower weft yarn had been beaten.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and includes a pair of warp ground yarn binding yarns which are woven with the upper surface side weft to form a part of the upper surface side surface and connect the upper surface side layer and the running surface side layer. By placing the running surface side layer as a warp abrasion type structure, there is no internal abrasion, no fibrillation of the yarn, no misalignment of the yarn even with a machine with high speed and strong dewatering ability, and the drainage is free. It is an object of the present invention to provide an industrial multilayer fabric which is uniform, has a strong binding force, has excellent surface smoothness, and can run smoothly over a dehydrating device and can be used for a long period of time.
[0005]
[Means for Solving the Problems]
The present invention
"1. An industrial multilayer fabric comprising at least an upper surface layer and a running surface layer, and connecting the upper surface layer and the running surface layer with a warp ground yarn binding yarn that weaves the upper surface layer and the running surface layer. , A part or all of the upper surface side warp is a warp ground yarn binding yarn, and the running surface side warp passes below a plurality of running surface side wefts continuous to form a long crimp on the running surface side. Industrial multilayer fabric characterized by the above-mentioned.
2. The position where the warp ground yarn binding yarn passes under the running surface side weft and bonds the running surface side layer is located on the upper surface side between the parts where the running surface side weft passes under the running surface side warp. 2. The industrial multilayer fabric according to claim 1, wherein the fabric is in an approaching position.
3. The warp ground yarn binding yarns are formed in pairs of two, and the pair of warp ground yarn binding yarns alternately appear on the upper surface side, and the upper surface side weft and the non-woven upper surface side substantially have the upper surface side warp 1 3. The industrial multilayer fabric according to paragraph 1 or 2, which forms a main structure.
4. The warp ground yarn binding yarn is partially or entirely located between portions passing above one or two upper surface side weft yarns, and the binding yarn is lowered to the running surface side to be lower than the running surface side weft. Item 3. The industrial multilayer fabric according to Item 1 or 2, which is a binding yarn passing through the side.
5. A pair of auxiliary weft binding yarns that pass over the two or more upper surface side warps adjacent to the upper surface side weft and form a crimp on the upper surface side are arranged in pairs, and the two auxiliary wefts are paired. 5. The binding yarn according to any one of claims 1 to 4, wherein the binding yarns alternately appear on the upper surface to form a structure substantially equivalent to one auxiliary weft binding yarn on the upper surface side warp and the non-woven upper surface side. An industrial multilayer fabric described in 1. "
About.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The industrial woven fabric of the present invention is used as an industrial woven fabric such as a papermaking wire, a conveyor belt, and a filter cloth, and can be particularly suitably used as a papermaking wire that is strictly required by users.
The present invention includes at least an upper surface side layer and a running surface side layer, and a part or the whole of the upper surface side warp is a warp ground yarn binding yarn that weaves the upper surface side layer and the running surface side layer while forming the upper surface side surface. The running surface side structure was a warp abrasion type two-layer fabric. With this structure, even a machine with high speed and strong dewatering ability does not cause internal abrasion, fibrillation of yarn, and yarn displacement, uniform drainage, binding force, and surface smoothness. It is possible to provide a woven fabric that has excellent properties and can run smoothly as if it slides on a dehydrating device, and can be used for a long time.
In the multilayer fabric of the present invention, a warp ground yarn binding yarn connecting the upper surface side layer and the traveling surface side layer while forming a part of the upper surface side surface is arranged in the fabric traveling direction. And the upper surface side surface of the woven fabric is woven with the upper surface side weft to form a dense surface.
The running surface side woven structure was a warp abrasion type structure in which running surface side warps passed under a plurality of running surface side wefts. The position at which the warp ground yarn binding yarn passes below the running surface side weft and binds the running surface side layer is located between the portions where the running surface side weft passes below the running surface side warp and on the upper surface side. The position was approaching.
[0007]
The effect of binding the woven fabric with the warp ground yarn binding yarn, which is a feature of the present invention, is different from the conventional binding yarn which only binds and does not contribute to the surface texture formation. Appear on the upper surface side surface and form a part of the fabric surface like the upper surface side warp, so that the surface texture is not affected. In addition, since the warp ground yarn binding yarn is stretched in the warp direction, that is, a general running direction and is always used under tension, there is no slack in the yarn, and the yarn is tied even in the woven fabric structure. Power tends to be strong. In particular, when two warp ground yarn binding yarns are arranged in one set, the binding force can be further enhanced, but one set of two warp ground yarn binding yarns is one or two. The other warp ground yarn binding yarn is woven with the running surface side weft under the place where it passes over the upper surface side weft and interweaves with the upper surface side weft to form the surface. Just fine. Since the two warp ground yarns alternately appear on the upper surface and function as one warp, the surface texture is not destroyed.
In addition, a structure using one warp ground yarn binding yarn may be used. For example, there is a structure in which one warp ground yarn binding yarn and a running surface side warp are vertically arranged. In this case, the structure of the warp ground yarn binding yarn is such that the warp ground yarn binding yarn is lowered toward the running surface at a part or all of the positions between the portions passing above one or two upper side wefts. The texture may pass under the running surface side weft. Even with such a structure, the two-layer woven fabric can be firmly connected without breaking the surface structure.
As the warp forming the upper surface, an upper surface warp may be arranged in addition to the warp ground yarn binding yarn. In order to make paper with good surface properties without wire marks, the upper surface side warp and the warp ground yarn binding yarn pass over and below one or two upper surface side wefts, and the woven dense surface is woven. It is preferable that the tissue be formed. In particular, when the woven fabric surface composed of the upper surface side warp, the warp ground yarn binding yarn and the upper surface side weft has a plain weave structure, the number of fiber support points is increased, so that the fiber supportability is improved, and the fine weave is excellent in surface smoothness. This has the effect.
[0008]
The running surface side warp had a warp wear type structure. This is because the use of the warp abrasion type structure does not cause widthwise grooves formed between the wefts, which are observed in the weft abrasion type woven fabric. In a woven fabric having a weft wear type structure, a dewatering device such as a foil or a blade may enter the groove in the width direction like a wedge, and the running surface side weft may be subjected to severe abrasion such as being hit. This is a phenomenon that occurs because a dewatering device such as a foil or a blade is disposed so as to extend in the same direction as the extending direction of the groove existing between the wefts. In order to eliminate the widthwise groove formed between the wefts, a warp abrasion type structure was adopted. As a result, the woven fabric can smoothly travel on the dewatering device, and a secondary increase in load can be suppressed without intense abrasion of the running surface side weft and running surface side warp in contact with the dewatering device such as a foil or a blade. Also has a great effect. In addition, by adopting the warp wear type structure, the running surface side weft forms an upward crimp, and the warp ground yarn binding yarn binds the running surface side fabric at a position where the crimp approaches the upper surface side. Becomes possible. In other words, the position where the warp ground yarn binding yarn passes below the running surface side weft and bonds the running surface side fabric is located between the portion where the running surface side weft passes below the running surface side warp. , A position approaching the upper surface side. With such a structure, since the warp ground yarn binding yarn is not suddenly drawn into the running surface side, local concave portions are not generated, and paper with good surface properties and no wire mark is provided. Can be made.
[0009]
The woven fabric of the present invention may have a structure in which two sets of auxiliary weft binding yarns are arranged between upper surface side wefts in some cases. By arranging the auxiliary weft binding yarn, fiber supportability and binding force can be improved. As the structure of the auxiliary weft binding yarn, a crimp is formed on the upper surface by passing over two or more upper side warps, and the other is running under the one where the upper surface is formed. A set of two auxiliary weft binding yarns alternately appear on the upper surface side and are not woven with the upper surface side warp, forming a design equivalent to one substantially auxiliary weft binding yarn on the upper surface side. . The upper surface side warp referred to here includes not only the upper surface side warp but also one in which, when two warp ground yarn binding yarns are arranged in one set, one set is counted as one upper side warp. In the case of a structure in which one set of the warp ground yarn binding yarn and the upper surface side warp are alternately arranged, at least two adjacent upper surface side warps are arranged at least one upper surface side warp and adjacent thereto. It refers to a structure that passes above a pair of warp ground yarn binding yarns.
The structures of the warp ground yarn binding yarn and the auxiliary weft binding yarn arranged in a pair may be the same or different. Since these are upper surface side surface constituting yarns, a set of two warp ground weft binding yarns and auxiliary weft binding yarns form the structure of substantially one warp and one auxiliary weft on the woven fabric surface. Any organization that does not hurt is acceptable.
[0010]
The yarn used in the present invention may be selected according to the application or the function of each yarn on the woven fabric. For example, in addition to monofilaments, multifilaments, spun yarns, crimped or bulky textures, etc. Dyed yarn, bulky yarn, processed yarn called stretch yarn, or a yarn obtained by combining these yarns by twisting or the like can be used. The cross-sectional shape of the yarn may be not only a circular shape but also a short shape yarn such as a square shape or a star shape, an elliptical shape, or a hollow shape. Also, the material of the yarn can be freely selected, and polyester, nylon, polyphenylene sulfide, polyvinylidene fluoride, polypro, aramid, polyether ether ketone, polyethylene naphthalate, polytetrafluoroethylene, cotton, wool, metal, and the like can be used. Needless to say, a yarn in which various substances are blended or contained in the copolymer or these materials depending on the purpose may be used.
In general, as the papermaking wire, it is preferable to use a polyester monofilament having rigidity and excellent dimensional stability for the upper surface side warp, the running surface side warp, and the upper surface side weft. As the warp ground yarn binding yarn, it is preferable to use a polyester monofilament similarly to the upper surface side warp. The type and wire diameter of the upper surface side warp and the warp ground yarn binding yarn may be the same or different, and can be selected at any time from the properties of the woven fabric and the weaving property. However, the upper surface side warp and the warp ground yarn binding yarn have different roles, and the warp ground yarn binding is arranged between the warps in pairs, so that it is better to use different yarns. As the auxiliary weft binding yarn, it is preferable to use polyester or polyamide monofilament depending on the structure and other conditions.
In addition, it is possible to improve wear resistance while ensuring rigidity by interlacing polyester monofilaments and nylon monofilaments alternately on the running surface side weft requiring wear resistance.
[0011]
【Example】
Embodiments of the present invention will be described based on examples with reference to the drawings.
FIGS. 1, 3, and 4 are design diagrams showing the complete structure of the embodiment of the present invention. The complete structure is the smallest repeating unit of the fabric structure, and the complete structure is connected vertically and horizontally to form the structure of the entire fabric. In the design drawing, the warp and the warp ground yarn binding yarns are indicated by Arabic numerals, for example, 1, 2, 3, among which the odd numbers 1a, 1b, 3a, 3b... , In which even numbered numbers 2, 4, 6,..., Upper surface side warps and running surface side warps are arranged vertically. The weft and auxiliary weft binding yarns are indicated by Arabic numerals with dashes, for example, 1 ', 2', 3 ', and the numbers 3a', 3b ', 6a', 6b '... Other than that, the upper surface side weft and the running surface side weft are vertically arranged. The mark x indicates that the upper surface side warp or warp ground yarn binding yarn forms a crimp passing above the upper surface side weft, and the mark □ indicates that the running surface side warp is located above the running surface side weft. Indicates that the warp ground yarn binding yarn is located below the running surface side weft, and ● indicates that the auxiliary weft binding yarn is the upper surface side warp or warp ground yarn binding. It indicates that the crimp is formed on the upper surface side through the upper side of the binding yarn, and the mark ○ indicates that the auxiliary weft binding yarn is located below the running surface side warp.
In the present embodiment, the upper surface side weft and the running surface side weft, and the upper surface side warp and the running surface side warp are arranged on the design drawing so as to be overlapped with each other for convenience. .
[0012]
Example 1
In the design diagram of FIG. 1, the warp ground yarn binding yarns and the upper surface side warp paired with the warp forming the upper surface side are alternately arranged, and the warp ground yarn binding yarns are one set of two warp yarns. This is a 10-shaft two-layer fabric in which the upper surface side warp and the running surface side warp are arranged vertically. 1a and 1b are paired and woven with the upper surface side weft to form a plain weave structure of one upper surface side warp on the upper surface side, and the upper surface side warp 2 is woven with the upper surface side weft next to the plain weave. Is formed. Therefore, a plain weave structure is formed by the warps and the wefts even when viewed as the entire woven fabric surface.
As the structure of the warp ground yarn binding yarn, the warp ground yarn binding yarn 1a passes over the upper surface side weft 1 ', then passes between the upper surface side weft 2' and the running surface side weft 2 ', and After passing above the side weft 3 ', pass between the upper surface side wefts 4', 5 ', 6' and the running surface side wefts 4 ', 5', 6 'and then under the running surface side weft 7'. And then pass between the upper surface side wefts 8 ', 9', 10 'and the running surface side wefts 8', 9 ', 10'. The warp ground yarn binding yarn 1b paired therewith passes between the upper surface side wefts 10 ', 1' and the traveling surface side wefts 10 ', 1', and then passes under the traveling surface side weft 2 ', Next, it passes between the upper surface side wefts 3 ', 4' and the running surface side wefts 3 ', 4', then passes over the upper surface side wefts 5 ', and then the upper surface side wefts 6' and the running surface side wefts 6 '. It passes through the gap, then passes over the upper surface side weft 7 ', then passes between the upper surface side weft 8' and the running surface side weft 8 ', and then passes over the upper surface side weft 9'. As a result, the warp ground weft binding yarn 1b, which is paired with the warp ground weft binding yarn 1a and the running surface side weft 2 below the upper side where the warp ground weft binding yarn 1a is woven with the upper surface side wefts 1 ', 2', 3 '', The running surface side layer is interwoven through the lower side, and the lower side where the warp ground yarn binding yarn 1b is interwoven with the upper surface side wefts 5', 6 ', 7', 8 ', 9'. It can be seen that the warp ground yarn binding yarn 1a paired therewith passes under the running surface side weft 7 'to interweave the running surface side layer. Also, 3a and 3b, 5a and 5b... 9a and 9b have the same structure, and are respectively shifted downward by two wefts. In the present embodiment, the two warp ground yarn binding yarns are combinations of different designs, but may be combinations of the same design. The arrangement order of the two warp ground yarn binding yarns is always the same, but they may be alternately replaced.
The upper surface side warp and the running surface side warp are arranged vertically next to the pair of warp ground yarn binding yarns. The design of the upper surface side warp is a plain weave design formed by alternately passing above and below one upper surface side weft. On the upper surface, one set of warp ground yarns and one upper surface warp are alternately arranged, but the present invention is not limited to this and can be changed as appropriate. When it is desired to increase the binding force, the arrangement ratio of the warp ground yarn binding yarn can be increased.
The running surface side warp had a warp abrasion-type structure that passed above one running surface side weft and then passed below four continuous running surface side wefts. By adopting such a structure, since a widthwise groove between the wefts caused by the weft wear type structure does not occur, the running surface side weft and the running surface side warp do not suffer from severe wear, and the foil It can run smoothly on a dewatering device such as a blade or a blade, and load fluctuations and the like hardly occur.
In addition, by adopting the warp wear type structure, the running surface side weft forms an upward crimp, and the warp ground yarn binding yarn binds the running surface side fabric at a position where the crimp approaches the upper surface side. Becomes possible. With such a structure, the warp ground yarn binding yarn is not suddenly drawn into the running surface side. FIG. 2 is a cross-sectional view along the weft 1 'in the design drawing of FIG. The running surface side weft 1 'passes under the running surface side warp 2 once in one cycle, passes over the continuous running surface side warps 4, 6, 8, and 10, and forms an upward crimp. Since the running surface side weft 1 ′ is woven by the running surface side warp 2, it becomes a crimp closest to the upper surface side layer in the vicinity of the warp ground yarn binding yarn 7 in a substantially central portion thereof. The warp ground yarn binding yarn also interweaves the running surface side layer once in one cycle, and the binding portion is located at a portion where the upward crimp of the running surface side weft approaches the upper surface side layer. When the warp ground yarn binding yarn is tied at this position, generally even a warp ground yarn binding yarn having a smaller wire diameter than the running surface side weft is not strongly drawn into the running surface side weft, There is no dent on the fabric surface. If the binding portion of the warp ground yarn binding yarn is close to the warp ground yarn binding yarn 3 where the running surface side weft is drawn relatively strongly, the warp ground yarn binding yarn is woven by the running surface side weft. It is strongly pulled downward by the force and forms a local recess on the upper surface.
[0013]
As described above, in the first embodiment of the present invention shown in FIG. 1, the warp ground yarn binding yarns are arranged in a pair, the running surface side layer has a warp wear type structure, and the drawing is performed by the warp ground yarn binding yarns. The structure is designed to bond at a small position, so that even a machine with high speed and strong dewatering ability does not suffer from internal abrasion, yarn fibrillation, yarn displacement, uniform drainage, It is possible to provide an industrial multilayer fabric which has a strong binding force, excellent surface smoothness, and can be used smoothly for a long period of time by running smoothly like sliding on a dehydrator. In the present embodiment, the warp ground yarn binding yarns are arranged as a pair, but may be a structure using one warp ground yarn binding yarn. For example, there is a structure in which one warp ground yarn binding yarn and a running surface side warp are vertically arranged. The structure of the warp ground yarn binding yarn at that time is such that the upper surface side surface is formed by passing over one or two upper surface side weft yarns, and a part of the warp ground yarn binding yarn between the upper surface side knuckles is formed. Alternatively, the texture may be lowered to the running surface side at all positions and pass below the running surface side weft. In this case, even with a structure in which the upper surface side warp and one warp ground yarn binding yarn are arranged, similarly, the two-layer fabric can be firmly connected without breaking the upper surface side surface texture.
[0014]
Example 2
The design diagram of FIG. 3 is another embodiment of the present invention and shows a multi-layer fabric of 14 shafts. The symbols and arrangement of the yarns are the same as in FIG.
A warp ground yarn binding yarn and upper surface side warp paired with the warp forming the upper surface side are alternately arranged, and the warp ground yarn binding yarn has a structure such that a pair of warp ground yarns has a structure of one warp. The upper surface side warp and the running surface side warp were vertically arranged. 1a and 1b are paired and woven with the upper surface side weft to form a plain weave structure of one upper surface side warp on the upper surface side, and the upper surface side warp 2 is woven with the upper surface side weft next to the plain weave. Is formed. Therefore, a plain weave structure is formed by the warps and the wefts even when viewed as the entire woven fabric surface.
The lower side where the warp ground yarn binding yarn 1a is woven with the upper surface side weft yarns 1 ', 2', 3 ', 4', 5 ', 6', and the warp ground yarn binding yarn 1b paired therewith Passes through the underside of the running surface side weft 4 'and interweaves the running surface side layer, and the warp ground yarn binding yarn 1b is made of the upper surface side weft 8', 9 ', 10', 11 ', 12', 13 , 14 ', the warp ground yarn binding yarn 1a paired therewith passes through the underside of the running surface side weft 11' to interweave the running surface side layer. Understand. 3a and 3b, 5a and 5b... 9a and 9b have the same structure, and are respectively shifted upward by four wefts. In the present embodiment, the two warp ground yarn binding yarns are combinations of different designs.
The upper surface side warp and the running surface side warp are arranged vertically next to the pair of warp ground yarn binding yarns. The design of the upper surface side warp is a plain weave design formed by alternately passing above and below one upper surface side weft.
[0015]
The running surface side warp had a warp abrasion-type structure that passed over one running surface side weft and then passed below six running surface side wefts. By adopting such a structure, since a widthwise groove between the wefts caused by the weft wear type structure does not occur, the running surface side weft and the running surface side warp do not suffer from severe wear, and the foil It can run smoothly on a dewatering device such as a blade or a blade, and load fluctuations and the like hardly occur.
In addition, by adopting a warp wear type structure, the running surface side weft forms an upward crimp, and the warp ground yarn binding yarn can tie the running surface side fabric at a position close to the upper surface side. It becomes. With such a structure, the warp ground yarn binding yarn is not suddenly drawn into the running surface side, and no dent is given to the upper surface side surface. The running surface side weft 1 ′ passes under the running surface side warp 10 once in one cycle, and forms an upward crimp passing over the continuous running surface side warps 12, 14, 2, 4, 6, 8. ing. Since the running surface side weft 1 ′ is woven by the running surface side warp 10, the top surface side layer is the closest to the warp ground yarn binding yarn 3 between the running surface side warp 10 and the next running surface side warp. Crimp approaching. The warp ground yarn binding yarn also interweaves the running surface side layer once in one cycle, and the binding portion is located at a portion where the upward crimp of the running surface side weft approaches the upper surface side layer. When the warp ground yarn binding yarn is tied at this position, generally even a warp ground yarn binding yarn having a smaller wire diameter than the running surface side weft is not strongly drawn into the running surface side weft, There is no dent on the fabric surface.
In the second embodiment of the present invention shown in FIG. 3, the warp binding yarns are arranged in a pair and the running surface side layer has a warp abrasion type structure, so that the dewatering capacity is high at high speed. Even with a powerful machine, there is no internal abrasion, yarn fibrillation, yarn deviation, uniform drainage, strong binding force, excellent surface smoothness, and slides on the dewatering device Thus, it is possible to provide an industrial multilayer fabric that can run smoothly and can be used for a long period of time.
[0016]
Example 3
The design diagram of FIG. 4 shows another embodiment of the present invention, in which two sets of auxiliary weft binding yarns are arranged between the wefts of the woven fabric of the first embodiment. Since the auxiliary weft binding yarn has a structure that forms a long crimp for four warps in the weft direction on the upper surface side surface, the fiber supportability can be improved. Further, since the auxiliary weft binding yarn also functions as a binding yarn, there is also an effect of improving the binding force of the woven fabric.
The structures of the upper surface side warp, the set warp ground yarn binding yarn, the upper surface side weft, the running surface side warp, and the running surface side weft are the same as those in FIG.
The structure of a pair of auxiliary weft binding yarns passes above four continuous upper surface side warps, then passes under three continuous upper surface side warps, and then one running surface side. A structure that passes under the warp and then passes under two continuous upper surface side warps, one under the surface forming the upper surface side and the other under the running surface side warp. The running surface side layer was woven through the side. The structure of the auxiliary weft binding yarn is not limited to this. For example, two auxiliary weft binding yarns are combined with two designs passing above the upper surface side warp for two warps. It may be a structure that forms a long crimp passing over the upper surface side warp. If one auxiliary weft binding yarn is a long crimp that passes over too many upper side warps, the weaving force will be weak and the auxiliary weft binding yarn will easily move, making it difficult to supply a stable fabric. Must be considered. Of course, the structure of the two auxiliary weft binding yarns may be the same or different.
As described above, the third embodiment of the present invention shown in FIG. 4 is configured by arranging the warp ground yarn binding yarn and the auxiliary weft binding yarn in a pair and forming the running surface side layer into a warp wear type structure. Even with a machine with high speed and strong dewatering ability, there is no internal abrasion, yarn fibrillation, yarn displacement, uniform drainage, strong binding force, fiber support, surface smoothness It is possible to provide an industrial multilayer fabric which is excellent in durability and can be used smoothly for a long time by running smoothly as if sliding on a dewatering device.
[0017]
【The invention's effect】
The industrial multilayer fabric of the present invention is arranged with a warp ground yarn binding yarn connecting the upper surface side layer and the running surface side layer while forming a part of the upper surface side surface by being woven with the upper surface side weft, and the running surface side layer. Has a warp abrasion-type structure and a structure in which the binding portion of the warp ground yarn binding yarn is tied at a position where the pull-in is small, so that the surface is free from surface local concavities and has good surface properties and drainage. Even with a machine that is uniform and has a high speed and strong dewatering ability, there is no occurrence of internal abrasion, thread fibrillation and yarn displacement, strong binding force, and smooth as if sliding on the dewatering device. It can be used for a long time by running, and has an excellent effect on fiber support.
[Brief description of the drawings]
FIG. 1 is a design diagram showing a complete structure of Example 1 of the present invention.
FIG. 2 is a cross-sectional view taken along a weft 1 ′ according to the first embodiment of the present invention.
FIG. 3 is a design diagram showing a complete structure of Example 2 of the present invention.
FIG. 4 is a design diagram showing a complete structure of Example 3 of the present invention.
[Explanation of symbols]
1a. Warp ground yarn binding yarn
1b. Warp ground yarn binding yarn
2. Upper surface side warp / running surface side warp
3a. Warp ground yarn binding yarn
3b. Warp ground yarn binding yarn
4. Upper surface side warp / running surface side warp
5a. Warp ground yarn binding yarn
5b. Warp ground yarn binding yarn
6. Upper surface side warp / running surface side warp
7a. Warp ground yarn binding yarn
7b. Warp ground yarn binding yarn
8. Upper surface side warp / running surface side warp
9a. Warp ground yarn binding yarn
9b. Warp ground yarn binding yarn
10. Upper surface side warp / running surface side warp
11a. Warp ground yarn binding yarn
11b. Warp ground yarn binding yarn
12. Upper surface side warp / running surface side warp
13a. Warp ground yarn binding yarn
13b. Warp ground yarn binding yarn
14． Upper surface side warp / running surface side warp
1 '. Upper surface side weft / running surface side weft
2 '. Upper surface side weft / running surface side weft
3 '. Upper surface side weft / running surface side weft
4 '. Upper surface side weft / running surface side weft
5 '. Upper surface side weft / running surface side weft
6 '. Upper surface side weft / running surface side weft
7 '. Upper surface side weft / running surface side weft
8 '. Upper surface side weft / running surface side weft
9 '. Upper surface side weft / running surface side weft
10 '. Upper surface side weft / running surface side weft
11 '. Upper surface side weft / running surface side weft
12 '. Upper surface side weft / running surface side weft
13 '. Upper surface side weft / running surface side weft
14 '. Upper surface side weft / running surface side weft
3a. Auxiliary weft binding yarn
3b. Auxiliary weft binding yarn
6'a. Auxiliary weft binding yarn
6'b. Auxiliary weft binding yarn
9'a. Auxiliary weft binding yarn
9'b. Auxiliary weft binding yarn
12'a. Auxiliary weft binding yarn
12'b. Auxiliary weft binding yarn

Claims (5)

An industrial multilayer fabric comprising at least an upper surface side layer and a running surface side layer, wherein the upper surface side layer and the running surface side layer are connected by a warp ground yarn binding yarn that weaves the upper surface side layer and the running surface side layer, A part or all of the side warp is a warp ground yarn binding yarn, and the running surface side warp passes under a plurality of running surface side wefts continuous to form a long crimp on the running surface side. Industrial multilayer fabrics. The position where the warp ground yarn binding yarn passes under the running surface side weft and bonds the running surface side layer is located on the upper surface side between the parts where the running surface side weft passes under the running surface side warp. The industrial multilayer fabric according to claim 1, wherein the fabric is in an approaching position. The warp ground yarn binding yarns are formed in pairs of two, and the pair of warp ground yarn binding yarns alternately appear on the upper surface side, and the upper surface side weft and the non-woven upper surface side substantially have the upper surface side warp 1 The industrial multilayer fabric according to claim 1 or 2, which forms a main structure. The warp ground yarn binding yarn is partially or entirely located between portions passing above one or two upper surface side weft yarns, and the binding yarn is lowered to the running surface side to be lower than the running surface side weft. The industrial multilayer fabric according to claim 1 or 2, which is a binding yarn passing through the side. A pair of auxiliary weft binding yarns that pass over the two or more upper surface side warps adjacent to the upper surface side weft and form a crimp on the upper surface side are arranged in pairs, and the two auxiliary wefts are paired. 5. The binding yarn according to claim 1, wherein the binding yarns alternately appear on the upper surface and form a texture substantially equivalent to one auxiliary weft binding yarn on the upper surface side warp and the non-woven upper surface side. The industrial multilayer fabric described in 1.

Images