JP2020020054A - Industrial two-layered fabric - Google Patents

Abstract

To provide an industrial two-layer fabric that satisfies basic fabric characteristics such as rigidity, abrasion resistance, dewaterability, mark suppression, and low water retention for reducing water retention.SOLUTION: An industrial two-layer fabric in which at least a first texture and a second texture are provided in a complete texture, the first texture is formed by two sets of upper side warp yarns and one lower side warp yarns, the second texture is formed by one upper side warp yarns and one lower side warp yarns, the first texture and the second texture are arranged adjacently, the upper side warp yarns in the first texture are formed by warp binding yarns having a function of connecting the upper side woven fabric and the lower side woven fabric, the upper side warp yarns in the two sets forming the first texture are arranged adjacently and constitute a part of the rib weave texture at the surface of the upper side woven fabric, and the diameter of the lower side warp yarns is larger than the diameter of the upper side warp yarns forming the first texture, and the upper side warp yarns in the second texture are formed by flat warp yarns.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a novel industrial two-layer fabric capable of reducing the net thickness of the two-layer fabric, having excellent rigidity, abrasion resistance, dehydration properties, and suppression of marks, and corresponding to a high-speed paper machine. In particular, by forming the upper side fabric by combining a warp weave structure with two upper side warps and a flat warp, the fabric becomes a flat yarn structure, and furthermore, the effect of slow dewatering and low water retention by the warp binding structure. The present invention relates to an industrial two-layer fabric that exhibits

  Conventionally, warp and weft woven fabrics have been widely used as industrial fabrics.For example, there are papermaking fabrics, conveyor belts, filter cloths, and the like, and fabric characteristics suitable for each use and use environment are required. . Of these woven fabrics, the requirements for papermaking woven fabrics used in the papermaking process of dewatering raw materials utilizing the mesh of the woven fabric are particularly severe. For example, a woven fabric having excellent surface smoothness in which the wire mark of the woven fabric is difficult to transfer to paper, a dewatering property for sufficiently and uniformly dehydrating excess water contained in the raw material, a degree that can be suitably used even in a severe environment. There is a demand for a woven fabric which has the rigidity and abrasion resistance of the present invention and can maintain the conditions required for producing better paper for a long period of time. In addition, fiber support, improvement in papermaking yield, dimensional stability, running stability, and the like are required. Furthermore, in recent years, the speed of papermaking machines has been increasing, and accordingly, the demand for papermaking fabrics has become more severe.

Taking the most demanding papermaking woven fabric among industrial woven fabrics as an example, with the recent increase in speed of papermaking machines, particularly excellent dewatering properties and suppression of marks due to surface smoothness are required. Although the required dewatering properties vary depending on the paper machine and the paper product, uniform dehydration is an essential condition for any paper product. In recent years, the use of waste paper has increased, and dehydration has been insufficient due to the presence of a large amount of fine fibers, and sufficient and uniform dehydration has become more important. Satisfaction of the required properties for papermaking fabrics is even more difficult. Further, there is also a demand for low water retention which lowers the amount of water (hereinafter, referred to as "water retention") that the industrial fabric keeps in the space when dewatering.
For example, by reducing the net thickness, the amount of water retention can be reduced. Therefore, simply reducing the diameter of the warp to reduce the mesh thickness is performed, but in such a case, the mesh becomes coarse, the rigidity is reduced by the mesh strength, and excessive mesh space is generated, so that the In this case, the raw material does not stay and falls off, causing a decrease in yield.
In addition, a layer of fibers (hereinafter, referred to as “initial mat”) is formed on the woven fabric by dehydration when the raw material is discharged onto the woven fabric (hereinafter, referred to as “initial dehydration”).
When the dewatering speed of the woven fabric is high, a strong initial mat is formed due to clogging of fibers in the woven mesh. A strong initial mat will clog the mesh of the fabric before the dehydration of the raw material is completed, so the subsequent dehydration will be incomplete, causing poor dewatering and deteriorating the paper formation etc. And the dehydration performance was unstable.
The speed of dehydration of the woven fabric is determined by the influence of the surface of the woven fabric, the internal space, and the like.
In particular, the industrial woven fabric having a triple woven structure in which the upper woven fabric and the lower woven fabric are joined with binding yarns has a high dewatering speed, and the dewatering speed is set by setting the weft density high to suppress initial dewatering. However, when a strong initial mat is formed, a more remarkable decrease in dewatering properties occurs.

On the other hand, as a fabric having good dewatering properties, there is an industrial two-layer fabric or the like in which a dewatering hole penetrating from the upper surface side to the lower surface side is formed. In particular, the upper surface side weft, the lower surface side weft, and the upper surface side warp structure and the lower surface side warp structure are woven with the upper surface side weft, the lower surface side weft as a woven fabric intended to satisfy the surface properties, fiber supportability, and dewatering properties required for industrial two-layer fabrics. Industrial double-layer fabrics using the formed warp binding yarns are known.
Patent Literature 1 discloses a two-layer woven fabric using a warp binding yarn. Such a conventional technique is a two-layer woven fabric in which a part of the warp functions as a binding yarn for weaving the upper side layer and the lower side layer, and the pair of warp binding yarns has an upper side warp structure and a lower side. Since the warp structures are complemented to form each surface structure, the fabric has excellent surface properties and binding strength. However, it is necessary to break and bond a part of the knuckle of the structure, and it is essential to complement the knuckle with another warp at such a location. At this time, it has been known that crossing portions appear successively between adjacent warps, so that dewatering resistance is generated, which is likely to cause a mark on paper.

Patent Document 2 discloses an industrial two-layer fabric in which a pair of an upper surface side warp and a warp binding yarn is arranged for the purpose of uniform dehydration. This woven fabric has a uniform structure formed on the surface by combining the upper surface side knuckle and the upper surface side warp structure of the warp binding yarn that interweaves the upper and lower surfaces. In this woven fabric, the texture does not collapse because the two warps cooperate to form a texture of one warp on the surface, but one or both of the warps must break the texture of the warp itself. However, when they cross over the upper and lower surfaces, they form an intersection, and the warps are arranged as a set of two warps, but two warps overlap on the line for one warp. However, since the warp binding yarn closes the mesh near the upper surface side weft because it is lined up side by side, the dewatering characteristics of the wire change partially, and marks are given to the paper. there were. Also, such industrial two-layer fabrics have good dewatering properties because the dewatering holes that completely penetrate from the upper side layer to the lower side layer are arranged on the entire surface, but the sheet material on the wire due to strong vacuum etc. In some cases, the fibers are stuck into the woven fabric, fibers, fillers, or the like are removed, and the generation of dewatering marks becomes remarkable.
Furthermore, in conventional industrial two-layer fabrics, an on-stack structure may be adopted in order to improve dewatering properties. In such a structure, when warps are formed with different vertical diameters, the surface space becomes excessively large. Since the space between the warps on the upper surface side is increased while the space between the warps on the lower surface side is narrowed, the control of the dewatering speed was insufficient.

JP-A-2004-36052 JP 2004-68168 A

An object of the present invention is to provide an industrial two-layer fabric that satisfies the basic characteristics of a fabric such as rigidity, abrasion resistance, dehydration, mark suppression, and low water retention for reducing water retention.
The present invention also provides a novel industrial two-layer fabric corresponding to a high-speed paper machine. That is, the correlation between the dewatering property and the water retention is an important factor in increasing the speed of industrial two-layer fabrics, and furthermore, a high yield is required by suppressing the removal of raw materials. Therefore, the present invention provides an industrial two-layer fabric that improves the dewatering property and realizes low water retention by improving the opening and the internal space on the upper surface side and the lower surface side, increasing the amount of dehydration while suppressing initial dehydration, and the like. The purpose is to provide.
Furthermore, the upper surface side weft can be arbitrarily designed by making the ratio of the warp space between the upper surface side fabric and the lower side side fabric approximately the same, and giving a difference in the wire diameter between the upper surface side weft and the lower surface side weft. It is an object of the present invention to provide an industrial two-layer fabric in which the dewaterability and the water retention can be adjusted by changing the ratio of the weft to the lower surface side.

  The industrial two-layer fabric according to the present invention has a first structure in which upper surface side warps are arranged in two sets and at least one of the two sets of warp has a warp having a binding function; By having a second structure using flat yarns, it is characterized by realizing high dehydration and low water retention while having rigidity. That is, the present invention employs the following configurations in order to solve the above-described problems.

The present invention has the following features to attain the object of the prior art.
(1) In an industrial two-layer fabric composed of an upper surface side warp and an upper surface side weft, and an industrial double layer fabric composed of a lower surface side warp and a lower surface side weft, the industrial double layer fabric has at least a first structure in a complete structure. A first design is formed by a set of two upper surface side warps and one lower surface side warp, and the second design is formed by one upper surface side warp and one lower surface side warp. The first structure and the second structure are formed adjacent to each other, and the upper surface side warp in the first structure has a function of binding the upper surface side fabric and the lower surface side fabric. The two sets of upper side warps forming the first design are formed by knotting, and are arranged adjacent to each other to partially form a ridge on the surface of the upper side fabric, and the wire diameter of the lower side warp is The second design is larger than the wire diameter of the upper surface side warp forming the first design, and Definitive upper surface side warp is an industrial two-layer fabric, characterized in that it is formed by a flat warp.

Here, the ridge weave means that two upper side warps are arranged adjacently, and both yarns pass above and below the upper side weft to form a knuckle on the surface of the fabric. In the present invention, the two upper side warps are binding yarns, and complement each other to exhibit a binding function. By forming a ridge weave by two upper side warps, a pseudo effect using a flat yarn can be obtained. Specifically, the knuckle shape can be made flat, and the surface smoothness and fiber supportability can be improved. By arranging the flat yarns described below adjacently, the effect of the warp yarn binding type two-layer fabric can be exhibited.
In addition, the flat yarn in the present invention refers to a yarn having a cross-sectional shape that is not circular but a shape whose upper and lower surfaces are substantially flat. The flat yarn of the present invention includes not only a rectangular cross-section but also an elliptical cross-section, but a yarn whose width is larger than its upper and lower diameters is used. The preferred aspect ratio is 1.1 to 2.0. By using such a flat yarn, the net thickness in an industrial two-layer fabric can be suppressed.

In the past, the wire diameter of the yarns constituting the woven fabric was reduced to suppress the net thickness.However, in the case of an industrial double-layer woven fabric having different vertical line diameters, the warp space on the upper surface side is larger than the lower surface side. Thus, it has been difficult to achieve both dehydration suppression and mesh thickness suppression. In the present invention, the net thickness is suppressed by a combination of two thin warps and a flat warp, so that the dewatering speed can be controlled.
Further, since the present invention has a structure in which a woven structure is constituted by two warps and bonded, at least one of the two binding yarns has both the woven structure structure and the bonding structure structure. With the other pair forming the upper surface at that portion, the effect of minimizing the collapse of the woven structure at the joint can be achieved.

(2) The wire diameter of the lower surface side warp forming the first design is 130 to 300% of the wire diameter of the upper surface side warp forming the first design. Industrial two-layer fabric.
Here, when the wire diameter of the lower surface side warp is less than 130% of the wire diameter of the upper surface side warp, the difference in the wire diameter between the upper surface side warp and the lower surface side warp becomes small, the woven fabric elongates, etc. There is a risk that affects sex. On the other hand, when the wire diameter of the lower surface side warp exceeds 300% of the wire diameter of the upper surface side warp, the space of the woven fabric itself is reduced, and there is a risk that a problem occurs from the viewpoint of the dewatering speed.
(3) The industrial two-layer fabric according to (1) or (2), wherein in the second structure, the aspect ratio of the flat warp is 1.1 to 2.0.
When the aspect ratio of the flat warp is less than 1.1, a sufficiently thin mesh thickness cannot be obtained. On the other hand, when the aspect ratio of the flat warp exceeds 2.0, the flat yarn itself becomes thin, the space of the woven fabric itself is reduced, the strength of the woven fabric is reduced, and there is a risk of affecting the dewatering property.

(4) The industrial two-layer fabric according to any one of (1) to (3), wherein the first structure and the second structure are alternately arranged. Is an industrial two-layer fabric described in 1. above.
As the yarn constituting the industrial two-layer fabric according to the present invention, there is an upper side warp interwoven with the upper side weft, a warp binding yarn interwoven with both the upper side weft and the lower side weft, and the upper side warp. The warp binding yarns constitute a set of warp binding yarns arranged vertically. Here, although it is arranged vertically, the upper surface side warp is woven only with the upper surface side weft, and the warp binding yarn is woven with both the upper surface side weft and the lower surface side weft, so that they are completely overlapped It is not, it is actually staggered. In addition to the set of warp binding yarns, a set of upper and lower warps composed of upper side warps interwoven with upper side wefts and lower side warps interwoven with lower side wefts may be arranged.

By adopting the configuration of the industrial two-layer fabric according to the present invention, it is possible to obtain the effect of satisfying the basic characteristics of the fabric such as rigidity, abrasion resistance, dehydration, mark suppression, and low water retention that reduces the amount of water retention. be able to.
Further, by employing the configuration of the industrial double-layer fabric according to the present invention, a new industrial double-layer fabric corresponding to a high-speed paper machine can be provided. The present invention can realize slow dewatering and low water retention by a warp binding structure having a woven fabric having a flat yarn structure by combining a flat warp with a warp weave. And has an excellent effect of having low water retention.
Furthermore, by adopting the configuration of the industrial two-layer fabric according to the present invention, the ratio of the warp space of the upper side fabric and the lower side fabric can be made substantially the same, so that the wire diameter of the upper side weft and the lower side weft is The difference in the space density can be arbitrarily designed by giving a difference to each other, and by changing the ratio of the upper surface side weft to the lower surface side weft, it is possible to obtain the effect of enabling adjustment of dehydration and water retention.

It is a conceptual diagram for demonstrating the effect of the woven fabric which has the knuckle shape and height of the warp and the weft which comprise this invention. (A) is a conceptual diagram of a conventional warp and a weft. (B) and (c) are conceptual diagrams of the warp and the weft constituting the present invention. 1 is a design diagram showing a complete structure according to Embodiment 1 of the present invention. It is a partial side view arrangement view showing the state of the warp seen from the side concerning Embodiment 1 of the present invention. FIG. 9 is a design diagram showing a complete structure according to Embodiment 2 of the present invention. It is a partial side view layout showing the state of the warp seen from the side concerning Embodiment 2 of the present invention. FIG. 11 is a design diagram showing a complete structure according to Embodiment 3 of the present invention. FIG. 10 is a partial side view showing a state of a warp viewed from a side according to Embodiment 3 of the present invention. FIG. 14 is a design diagram showing a complete structure according to Embodiment 4 of the present invention. It is a partial side layout drawing showing the state of the warp seen from the side concerning Embodiment 4 of the present invention.

Hereinafter, an embodiment of an industrial two-layer fabric according to the present invention will be described. The embodiments described below are examples of the present invention and do not limit the present invention.
The industrial two-layer fabric according to the present invention is an upper surface fabric comprising an upper surface side warp and an upper surface side weft, and an industrial two layer fabric comprising a lower surface side warp and a lower surface side weft. The complete design has at least a first design and a second design, and the first design is formed by a pair of upper surface side warps and one lower surface side warp. The first design and the second design are formed by a book and one lower side warp, and the first design and the second design are arranged adjacent to each other, and the upper surface side warp in the first design includes an upper surface side fabric and a lower surface side fabric. The upper surface side warp of the two sets forming the first design is formed by a warp binding yarn having a function of binding, and constitutes a part ridge weave on the surface of the upper surface side fabric, The wire diameter of the lower side warp is larger than the wire diameter of the upper side warp forming the first texture. Ku, and wherein the upper surface side warp in the second tissue is formed by a flat warp.

  The yarn used in the present invention may be selected depending on the application.For example, in addition to monofilaments, multifilaments, spun yarns, generally textured yarns subjected to crimping or bulking, bulky yarns, stretch yarns and the like A so-called processed yarn, or a yarn obtained by combining these by twisting or the like can be used. The cross-sectional shape of the yarn other than the flat warp may be not only circular but also star-shaped, rectangular or polygonal, or elliptical or hollow. Also, the material of the yarn can be freely selected, and polyester, polyamide, polyphenylene sulfide, polyvinylidene fluoride, polypro, aramid, polyether ether ketone, polyethylene naphthalate, polytetrafluoroethylene, cotton, wool, metal, etc. are used. it can. Of course, 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 industrial fabric, it is preferable to use a polyester monofilament having rigidity and excellent dimensional stability for the upper side warp, the lower side warp, the lower warp binding yarn, and the upper side weft. In addition, it is also possible to interweave polyester lower filaments, which require rigidity and wear resistance, by alternately arranging polyester monofilaments and polyamide monofilaments.

Further, in the present invention, the two sets of warp yarns in the first design are cooperatively woven by being arranged side by side. FIG. 1 is a conceptual diagram for explaining the knuckle shape and height of a warp constituting the present invention. FIG. 1 (a) is a conceptual diagram showing a conventional weaving portion using a warp and a weft. It is a conceptual diagram showing a knuckle shape and height using a warp and a weft of a wire diameter in a woven fabric. FIG. 1B is a diagram in which two sets of upper side warps 1t and 2t in the first design are arranged below the upper side weft 1′u. FIG. 1C is a diagram in which the flat warp 3h in the second design is arranged below the upper surface side weft 1′u. The warp used for the first design in the present invention is characterized in that the upper surface side warp has a smaller yarn diameter than the lower surface side warp. Therefore, as shown in FIG. 1, the knuckle-shaped longitudinal lengths L2 and L3 formed by the upper surface side warps 1t and 2t and the flat warp 3h may be smaller than the conventional knuckle-shaped longitudinal length L1 formed by a yarn having a wire diameter. I understand.
Therefore, the industrial two-layer fabric according to the present invention can form a flat knuckle shape on the upper surface texture side as compared with the conventional industrial two-layer fabric, so that a fabric having a reduced net thickness can be obtained. it can. In addition, the weft woven into two warps or flat warps has a flat knuckle shape, so that surface smoothness and fiber supportability can be improved. Furthermore, since the mesh can be adjusted to be small without increasing the thickness, it is possible to provide a dehydration characteristic which has not been conventionally provided.
And since this invention has the structure which comprises the weaving structure with two warp yarns, and is connected, one of two sets of two binding yarns has both a structure structure and a connection structure structure. And the other one of the yarns constituting the upper surface side can minimize the collapse of the woven structure at the joint.

  Further, in the industrial two-layer fabric according to the present invention, the wire diameters of the upper surface side warps can be all the same. Further, the diameters of the lower surface side warps may be all the same. Further, the wire diameter of the lower surface side warp may be configured to be 130 to 300% of the wire diameter of the upper surface side warp. With this configuration, the connection between the upper side fabric and the lower side fabric can be connected by one of the ridges composed of two relatively thin warps, so that the connection up and down the inside of the fabric can be performed. The wire diameter of the yarn can be made smaller than that of the warp binding yarn in an industrial two-layer fabric using a conventional warp binding yarn. Therefore, the occurrence of partial dehydration unevenness can be suppressed to a minimum. Further, conventionally, the net diameter was controlled by reducing the wire diameter of the yarn forming the woven fabric, but in the case of an industrial double-layer woven fabric having different vertical diameters, the space of the warp on the upper surface side is larger than that on the lower surface side. It was difficult to achieve both dehydration suppression and mesh thickness suppression. In the present invention, the combination of two thin warps and flat warps enables the dehydration rate to be adjusted while maintaining the net thickness.

In the present invention, the diameter of the upper surface side warp composed of two sets constituting the first design is smaller than the diameter of the upper surface side warp composed of one set constituting the second design. May be. By reducing the diameter of the upper surface side warp comprising the two sets constituting the first design, the force applied to the weft at the time of knuckle formation can be made comparable to that of the one set, and the surface smoothness and the fiber support Properties and the like can be improved. Further, since the wire diameter can be adjusted by selecting the wire diameter together with the wire, the wire diameter and the wire can be appropriately selected.
Further, in the present invention, an on-stack structure may be adopted. By having an on-stack structure, high dewatering properties can be obtained. On the other hand, since the surface structure is ridged, the warp is appropriately closed with two yarns, and the openings on the upper and lower sides are excessively large. Since the difference can be suppressed, the dehydration rate can be controlled.

  Next, an embodiment of the industrial two-layer fabric of the present invention will be described with reference to the drawings. FIGS. 2 to 9 are a design diagram and a partial side view showing an example of the industrial double-layer fabric of the present invention. The design diagram is the smallest repeating unit of the fabric structure, and this complete structure is connected vertically and horizontally to form the structure of the entire fabric. In the design drawings, the warp is indicated by Arabic numerals, for example, 1, 2, 3,. The weft is indicated by Arabic numerals with dashes, for example, 1 ', 2', 3 ',. The binding yarn is the upper surface side warp constituting the first design. In addition, the mark x indicates that one upper side warp constituting the first design is located above the upper side weft, and the mark △ indicates that the upper side warp is located below the lower side weft. Indicates that the lower surface side warp is located below the lower surface side weft. Upper surface side warps and lower surface side warps and upper surface side wefts and lower surface side wefts, which are assigned the same numbers, are arranged vertically. In the design drawing, the yarns are arranged so as to be exactly overlapped with each other vertically or the lower surface side warp is arranged at an intermediate point between the two upper surface side warps. May be arranged with a slight offset.

Embodiment 1
FIG. 2 is a design diagram of the first embodiment according to the industrial two-layer fabric of the present invention. FIG. 3 is a partial side view of Embodiment 1 of the industrial two-layer fabric of the present invention. The first design according to the first embodiment includes a pair of upper surface side warps and one lower surface side warp. The upper surface side warp in the first design is formed by a warp binding yarn having a function of binding the upper surface side fabric and the lower surface side fabric. Further, the two sets of upper side warps forming the first design are arranged adjacent to each other and partially constitute a ridge weave on the surface of the upper side fabric. The second design is composed of one upper surface side warp and one lower surface side warp. The upper surface side warp in the second design is formed by a flat warp. Further, as shown in FIG. 2, the first tissues 1, 3, 5 and the second tissues 2, 4, 6 are arranged adjacently and alternately. Further, the wire diameter of the lower surface side warp is formed larger than the wire diameter of the upper surface side warp forming the first design.

  Specifically, as shown in FIGS. 2 and 3, one upper side warp 1 in the first design passes under the lower side weft 1 ′, and the upper side wefts 5 ′, 7 ′, 9 ′, 11. It is a tissue passing above ', 13', 15 ', 17', 19 ', 21'. The other upper side warp 1 in the first design passes above the upper side wefts 1 ', 3', 5 ', 7', 9 ', passes below the lower side weft 13', and further passes on the upper side. The structure passes over the wefts 17 ', 19', 21 ', and 23'. The lower surface side warp 1 passes below the lower surface side wefts 1 'and 13'. Therefore, as apparent from FIG. 3, the upper surface side warp 1 of the two sets in the first design has the upper surface side wefts 5 ′, 7 ′, 9 ′ and 17 ′, 19 ′, 21 ′ of the upper side woven fabric. A part of the ridge will be formed on the surface. Next, the upper surface side warp 2 which is a flat warp in the second design is the upper surface side weft 2 ′, 4 ′, 6 ′, 8 ′, 10 ′, 12 ′, 14 ′, 16 ′, 18 ′, 20 ′, A plain weave is formed by passing over the upper sides of 22 'and 24'. The lower surface side warp 2 in the second design passes below the lower surface side wefts 3 'and 15'.

The first design in the industrial two-layer fabric according to the first embodiment forms a pseudo flat yarn by arranging two thin upper surface side warps side by side on a part of the surface of the upper surface side fabric to form a ridge weave. be able to. Further, by arranging the flat warp in the second structure adjacent to the first structure, it is possible to secure a suitable rigidity and elongation resistance while suppressing the thickness, similarly to a woven fabric forming a surface structure using only the flat yarn. The present invention can provide a woven fabric having excellent abrasion resistance, suitable dehydration properties, low water retention and surface smoothness.
In addition, by adopting the woven fabric structure according to the first embodiment, it is possible to reduce the mesh while suppressing the thickness of the woven fabric. Therefore, it is possible to adjust the dewaterability and water retention by selecting the wire diameter of the yarn. Can be.
Further, since the knuckle shape of the weft can be flattened by the two ridge weave structures, the surface smoothness and the fiber supportability can be improved.

Embodiment 2
FIG. 4 is a design diagram of Embodiment 1 of the industrial two-layer fabric of the present invention. FIG. 5 is a partial side view of Embodiment 2 of the industrial two-layer fabric of the present invention. The first design according to the second embodiment includes a pair of upper surface side warps and one lower surface side warp. The upper surface side warp in the first design is formed by a warp binding yarn having a function of binding the upper surface side fabric and the lower surface side fabric. Further, the two sets of upper side warps forming the first design are arranged adjacent to each other and partially constitute a ridge weave on the surface of the upper side fabric. The second design is composed of one upper surface side warp and one lower surface side warp. The upper surface side warp in the second design is formed by a flat warp. Further, as shown in FIG. 4, the first tissues 1, 3, 5 and the second tissues 2, 4, 6 are arranged adjacently and alternately. Further, the wire diameter of the lower surface side warp is formed larger than the wire diameter of the upper surface side warp forming the first design.

Specifically, as shown in FIGS. 4 and 5, one upper side warp 1 in the first design passes above the upper side wefts 1 ', 3', 5 ', and 7', and the lower side weft 10 '. Through the lower side of the upper surface side weft 13 ', 15', 17 '. The other upper surface side warp 1 in the first design passes under the lower surface side weft 1 ', and the upper surface side wefts 3', 5 ', 7', 9 ', 11', 13 ', 15', 17. The organization passes above the '. The lower surface side warp 1 passes below the lower surface side wefts 1 'and 10'. Therefore, as is apparent from FIG. 5, the upper surface side warp 1 of the two sets in the first design has the upper surface side wefts 3 ', 5', 7 'and 13', 15 ', 17' of the upper side fabric. A part of the ridge will be formed on the surface.
Next, the upper surface side warp 2 which is a flat warp in the second design passes over the upper surface side wefts 2 ', 4', 6 ', 8', 10 ', 12', 14 ', 16', 18 '. It forms a plain weave. The lower surface side warp 2 in the second design passes below the lower surface side wefts 2 'and 11'.

The first design in the industrial two-layer fabric according to the second embodiment forms a pseudo flat yarn by arranging two thin upper surface side warps side by side on a part of the surface of the upper surface side fabric to form a ridge weave. be able to. Further, by arranging the flat warp in the second structure adjacent to the first structure, it is possible to secure a suitable rigidity and elongation resistance while suppressing the thickness, similarly to a woven fabric forming a surface structure using only the flat yarn. And a woven fabric having excellent abrasion resistance, suitable dehydration properties and surface smoothness.
In addition, by adopting the woven fabric structure according to the second embodiment, the mesh can be reduced while the thickness of the woven fabric is suppressed. Therefore, the dehydration characteristics can be adjusted by selecting the wire diameter of the yarn.
Further, since the knuckle shape of the weft can be flattened by the two ridge weave structures, the surface smoothness and the fiber supportability can be improved.

Embodiment 3
FIG. 6 is a design diagram of Embodiment 3 according to the industrial two-layer fabric of the present invention. FIG. 7 is a partial side view of Embodiment 3 of the industrial two-layer fabric of the present invention. The first design according to the third embodiment includes a pair of upper surface side warps and one lower surface side warp. The upper surface side warp in the first design is formed by a warp binding yarn having a function of binding the upper surface side fabric and the lower surface side fabric. Further, the two sets of upper side warps forming the first design are arranged adjacent to each other and partially constitute a ridge weave on the surface of the upper side fabric. The second design is composed of one upper surface side warp and one lower surface side warp. The upper surface side warp in the second design is formed by a flat warp. As shown in FIG. 6, the first tissues 1, 3, 5 and the second tissues 2, 4, 6 are arranged adjacent to each other. Further, the wire diameter of the lower surface side warp is formed larger than the wire diameter of the upper surface side warp forming the first design.

Specifically, as shown in FIGS. 6 and 7, the one upper surface side warp 1 in the first design passes above the upper surface side wefts 1 ′, 3 ′, 5 ′, and 7 ′, and the lower surface side weft 10 ′. Through the lower side of the upper surface side weft 13 ', 15', 17 '. The lower surface side warp 1 passes below the lower surface side wefts 1 'and 10'. The other upper side warp 1 in the first design passes under the lower side weft 1 'and passes above the upper side wefts 5', 7 ', 9', 11 ', 13', 15 '. It has become. Therefore, as is clear from FIG. 7, the two sets of upper side warps 1 in the first design are partially ridged on the surface of the upper side fabric in the upper side wefts 5 ', 7' and 13 ', 15'. Will be constituted.
Next, the upper surface side warp 2 which is a flat warp in the second design passes over the upper surface side wefts 2 ', 4', 6 ', 8', 10 ', 12', 14 ', 16', 18 '. It forms a plain weave. The lower surface side warp 2 in the second design passes below the lower surface side wefts 2 'and 11'.

The first design in the industrial two-layer fabric according to Embodiment 3 forms a pseudo flat yarn by arranging two thin upper surface side warps in parallel on a part of the surface of the upper surface side fabric to form a ridge weave. be able to. Further, by arranging the flat warp in the second structure adjacent to the first structure, it is possible to secure a suitable rigidity and elongation resistance while suppressing the thickness, similarly to a woven fabric forming a surface structure using only the flat yarn. And a woven fabric having excellent abrasion resistance, suitable dehydration properties and surface smoothness.
Further, by adopting the woven fabric structure according to the third embodiment, the mesh can be reduced while suppressing the thickness of the woven fabric. Therefore, the dehydration characteristics can be adjusted by selecting the wire diameter of the yarn.
Further, since the knuckle shape of the weft can be flattened by the two ridge weave structures, the surface smoothness and the fiber supportability can be improved.

Embodiment 4
FIG. 8 is a design diagram of Embodiment 4 of the industrial two-layer fabric of the present invention. FIG. 9 is a partial side view of Embodiment 4 of the industrial two-layer fabric of the present invention. The first design according to the fourth embodiment is configured by a set of two upper surface side warps and one lower surface side warp. The upper surface side warp in the first design is formed by a warp binding yarn having a function of binding the upper surface side fabric and the lower surface side fabric. Further, the two sets of upper side warps forming the first design are arranged adjacent to each other and partially constitute a ridge weave on the surface of the upper side fabric. The second design is composed of one upper surface side warp and one lower surface side warp. The upper surface side warp in the second design is formed by a flat warp. As shown in FIG. 8, the first tissue 1 and the second tissues 2 and 8 are arranged adjacent to each other, and the first tissue 5 and the second tissues 4 and 6 are adjacent to each other. It is arranged and configured. Further, the wire diameter of the lower surface side warp is formed larger than the wire diameter of the upper surface side warp forming the first design.

Specifically, as shown in FIGS. 8 and 9, one upper side warp 1 in the first design passes above the upper side wefts 1 ', 3', 5 ', 7', 9 ', 11'. , Passing under the lower side weft 13 ′ and passing above the upper side wefts 15 ′, 17 ′. The lower surface side warp 1 passes below the lower surface side wefts 1 ', 7', 13 '. The other upper surface side warp 1 in the first design passes under the lower surface side weft 1 ', and the upper surface side wefts 3', 5 ', 7', 9 ', 11', 13 ', 15', 17. The organization passes above the '. Therefore, as is apparent from FIG. 9, the upper surface side warp 1 of the two sets in the first design has the upper surface side wefts 3 ', 5', 7 ', 9', 11 'and 15', 17 ' Part of the ridge weave is formed on the surface of the side fabric.
Next, the upper surface side warp 2 which is a flat warp in the second design passes over the upper surface side wefts 2 ', 4', 6 ', 8', 10 ', 12', 14 ', 16', 18 '. It forms a plain weave. The lower surface side warp 2 in the second design passes below the lower surface side wefts 2 ', 8', and 14 '.
Next, the upper surface side warp 3, which is a flat warp in the second design, passes above the upper surface side wefts 1 ', 3', 5 ', 7', 9 ', 11', 13 ', 15', 17 '. It forms a plain weave. The lower surface side warp 3 in the second design passes below the lower surface side wefts 4 ', 10', 16 '.
Next, the upper surface side warp 4, which is the flat warp in the second design, passes above the upper surface side wefts 2 ', 4', 6 ', 8', 10 ', 12', 14 ', 16', 18 '. It forms a plain weave. The lower side warp 4 in the second design passes below the lower side wefts 5 ', 11', 17 '.

The first design in the industrial two-layer fabric according to Embodiment 4 forms a pseudo flat yarn by arranging two thin upper surface side warps in parallel on a part of the surface of the upper surface side fabric to form a ridge. be able to. Further, by arranging the flat warp in the second structure adjacent to the first structure, it is possible to secure a suitable rigidity and elongation resistance while suppressing the thickness, similarly to a woven fabric forming a surface structure using only the flat yarn. And a woven fabric having excellent abrasion resistance, suitable dehydration properties and surface smoothness.
Further, by adopting the woven fabric structure according to the fourth embodiment, the mesh can be reduced while the thickness of the woven fabric is suppressed, so that the dehydration characteristics can be adjusted by selecting the wire diameter of the yarn.
Further, since the knuckle shape of the weft can be flattened by the two ridge weave structures, the surface smoothness and the fiber supportability can be improved.

1-8 warp 1'-24 'weft

Claims (4)

An upper surface side fabric comprising an upper surface side warp and an upper surface side weft, and an industrial double layer fabric comprising a lower surface side warp and a lower surface side weft, wherein the industrial double layer fabric has at least a first structure and a second structure in a complete structure. The first design is formed by a pair of upper surface side warps and one lower surface side warp, and the second structure is formed by one upper surface side warp and one lower surface side warp; The first structure and the second structure are disposed adjacent to each other, and the upper surface side warp in the first structure is formed by a warp binding yarn having a function of bonding the upper surface side fabric and the lower surface side fabric. The two sets of upper side warps forming the first design are arranged adjacent to each other and partially form a ridge on the surface of the upper side fabric, and the wire diameter of the lower side warp is the first warp. Larger than the wire diameter of the upper surface side warp forming the design, and in the second design Industrial two-layer fabric upper surface side warp is characterized in that it is formed by a flat warp. The industrial diameter according to claim 1, wherein the wire diameter of the lower surface side warp forming the first design is 130 to 300% of the wire diameter of the upper surface side warp forming the first design. Double-layer fabric. The industrial two-layer fabric according to claim 1 or 2, wherein in the second structure, the aspect ratio of the flat warp is 1.1 to 2.0. The industrial two-layer fabric according to any one of claims 1 to 3, wherein the first structure and the second structure are arranged alternately. Industrial double-layer fabric.

Images