industrial fabric

Abstract

The binder warp yarns include first and second binder warp yarns arranged in groups above and below, and a third binder warp yarn forming a yarn loop on the upper side of the over face side weft yarn. The over face side warp yarns include over face side change yarns arranged in groups above and below the third binder warp yarn. The over face side change yarns change a portion of the over face side surface weave by passing under the over face side weft yarn at positions where the third binder warp yarn forms a yarn loop on the over face side weft yarn. In the full weave, the groups of the first and second binder warp yarns and the groups of the third binder warp yarn and the over face side change yarns form the same weave pattern on the over face side weft yarn by complementing each other.

Description

Technical Field

[0001] This invention relates to industrial fabrics for use in papermaking machines. Background Technology

[0002] For a long time, papermaking wires, woven from warp and weft yarns, have been widely used as industrial fabrics in papermaking machines. The required properties of papermaking wires are diverse. For example, Patent Document 1 discloses an industrial fabric composed of an upper surface fabric, a lower surface fabric, upper surface warp yarns, and lower surface warp yarns. The upper surface fabric consists of upper surface warp yarns and upper surface weft yarns, and the lower surface fabric consists of lower surface warp yarns and lower surface weft yarns. The upper surface warp yarns function as knotting yarns, and the lower surface warp yarns also function as knotting yarns. The upper surface warp yarns and the lower surface warp yarns, which function as knotting yarns, are arranged in an upper and lower group.

[0003] (Existing technical literature)

[0004] (Patent Documents)

[0005] Patent Document 1: Japanese Patent Application Publication No. 2003-342889 Summary of the Invention

[0006] (The problem the invention aims to solve)

[0007] The upper and lower layer warp yarns of the bonding yarns, when grouped together, bond the upper and lower layers of the fabric together strongly. However, this can also reduce the surface texture of the upper layer fabric. Therefore, the more upper and lower layer warp yarns are added to increase the bonding strength, the worse the surface texture of the upper layer fabric will be.

[0008] The purpose of this invention is to provide an industrial fabric that can ensure bonding strength while improving the surface properties of the upper fabric.

[0009] (The measures taken to solve the problem)

[0010] To address the aforementioned problems, an industrial fabric comprising a top and bottom fabric according to a certain aspect of the present invention includes: a top weft yarn forming part of the top fabric; a bottom weft yarn forming part of the bottom fabric; a top warp yarn woven only into the top weft yarn to form part of the top fabric; a bottom warp yarn woven only into the bottom weft yarn to form part of the bottom fabric; and a joining warp yarn for joining the top and bottom fabrics. The joining warp yarn includes: a first joining warp yarn and a second joining warp yarn arranged vertically in a group; and a third joining warp yarn forming a yarn knot passing over the top side of the top weft yarn. The top warp yarn includes: an top-side alteration yarn arranged vertically with the third joining warp yarn. At the location where the third joining warp yarn forms a yarn knot on the top weft yarn, the top-side alteration yarn passes under the top weft yarn to alter a portion of the top surface structure. In the complete weave, the first and second knotted warp yarns complement each other, and the third knotted warp yarn and the upper side change yarn complement each other, so that the first and second knotted warp yarns complement each other and the third knotted warp yarn and the upper side change yarn form the same weft pattern on the upper side.

[0011] (The effect of the invention)

[0012] According to the present invention, an industrial fabric can be provided that can ensure bonding strength while improving surface properties. Attached Figure Description

[0013] Figure 1 A design drawing illustrating the complete structure of the industrial fabric according to the first embodiment.

[0014] Figure 2 For along Figure 1 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0015] Figure 3 A design drawing illustrating the complete structure of the industrial fabric according to the second embodiment.

[0016] Figure 4 For along Figure 3 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0017] Figure 5 A design diagram illustrating the complete structure of the industrial fabric according to the third embodiment.

[0018] Figure 6 For along Figure 5 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0019] Figure 7 A design diagram illustrating the complete structure of the industrial fabric according to the fourth embodiment.

[0020] Figure 8 For along Figure 7 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0021] Figure 9 A design diagram illustrating the complete structure of the industrial fabric according to the fifth embodiment.

[0022] Figure 10 For along Figure 9 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0023] Figure 11 A design drawing showing the complete structure of the industrial fabric according to the sixth embodiment.

[0024] Figure 12 For along Figure 11 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0025] Figure 13 A design drawing showing the complete structure of the industrial fabric according to the seventh embodiment.

[0026] Figure 14 A design drawing showing the complete structure of the industrial fabric according to the eighth embodiment.

[0027] Figure 15 A design drawing showing the complete structure of the industrial fabric according to the ninth embodiment.

[0028] Figure 16 A design drawing showing the complete structure of the industrial fabric according to the tenth embodiment.

[0029] Figure 17 A design drawing illustrating the complete structure of the industrial fabric according to the eleventh embodiment.

[0030] Figure 18 This is a design drawing illustrating the complete structure of the industrial fabric according to the twelfth embodiment.

[0031] Figure 19 This is a design drawing illustrating the complete structure of the industrial fabric according to the thirteenth embodiment.

[0032] Figure 20 This is a design drawing illustrating the complete structure of the industrial fabric according to the fourteenth embodiment.

[0033] Figure 21 This is a design drawing illustrating the complete structure of the industrial fabric according to the fifteenth embodiment. Detailed Implementation

[0034] In the following description, "warp yarn" refers to the thread extending along the conveying direction of the web when a multi-layered papermaking fabric is used as a circular conveyor belt, and "weft yarn" refers to the thread extending in the direction intersecting with the warp yarn. Furthermore, "top side fabric" refers to the fabric on the surface side of the papermaking wire used for conveying the web when the multi-layered fabric is used as a papermaking wire, and "bottom side fabric" refers to the fabric on the back side of the papermaking conveyor belt that primarily abuts against the drive roller. Additionally, "surface" simply refers to the exposed side of the top side fabric and the bottom side fabric; the "surface" of the top side fabric corresponds to the surface side of the papermaking wire, and the "surface" of the bottom side fabric corresponds to the back side of the papermaking wire.

[0035] Furthermore, a "design drawing" is the smallest repeating unit of a fabric structure and is equivalent to a complete fabric structure. That is, a "complete fabric structure" is formed by repeating the same pattern front to back and side to side. In addition, a "knuckle" refers to the portion of a warp yarn that is exposed to the surface after passing above or below one or more weft yarns.

[0036] In addition, "joining warp" means that at least a portion of the warp yarns constituting the upper and lower fabrics are warp yarns that are originally weft yarns that should only be woven into the upper (or lower) fabrics, which are joined to the weft yarns of the lower (or upper) fabrics by being woven into the upper (or lower) fabrics from the back (or front) side.

[0037] [First Implementation Method]

[0038] Figure 1 This is a design drawing showing the complete structure of the industrial fabric 10 according to the first embodiment. Figure 2 For along Figure 1 The design drawing shown is a cross-sectional view of the warp direction (also known as the longitudinal direction) of the warp yarns.

[0039] In the design drawings, warp yarns are represented by Arabic numerals, such as 1, 2, 3... Weft yarns are represented by Arabic numerals with apostrophes, such as 1', 2', 3'... Top side yarns are represented by numbers with the letter U, and bottom side yarns by numbers with the letter L, such as 1'U, 2'L, etc. Furthermore, the warp yarns that join the top and bottom side fabrics are represented by numbers with the letter B; the first joining warp yarn is represented by Bf, the second by Bs, and the third by Bt.

[0040] Furthermore, in the design drawing, the △ mark indicates that the first joining warp yarn is positioned below the lower side weft yarn; the ▲ mark indicates that the second or third joining warp yarn is positioned above the upper side weft yarn; the × mark indicates that the upper side warp yarn or the first joining warp yarn is positioned above the upper side weft yarn; and the ○ mark indicates that the lower side warp yarn, the second joining warp yarn, or the third joining warp yarn is positioned below the lower side weft yarn. The △, ▲, ×, and ○ marks represent yarn knots. Figure 3 These symbols were used thereafter as well.

[0041] Figure 1 The industrial fabric 10 of the first embodiment shown is formed by joining a top-side fabric (containing top-side warp yarns (1U, 2U, 3U, 5U, 6U, 7U) and a bottom-side fabric (containing bottom-side warp yarns (1L, 2L, 5L, 6L) and a bottom-side weft yarn (1'L to 3'L, 5'L to 7'L, 9'L to 11'L, 13'L to 15'L) with a first joining warp yarn (4Bf, 8Bf), a second joining warp yarn (4Bs, 8Bs), and a third joining warp yarn (3Bt, 7Bt). The top-side weft yarns (1'U to 16'U) constitute a part of the top-side fabric. The bottom-side weft yarns (1'L to 3'L, 5'L to 7'L, 9'L to 11'L, 13'L to 15'L) constitute a part of the bottom-side fabric. The first connecting warp yarns (4Bf, 8Bf), the second connecting warp yarns (4Bs, 8Bs), and the third connecting warp yarns (3Bt, 7Bt) connect the top and bottom fabrics, respectively forming a part of the top and bottom fabrics. Without distinguishing between the first connecting warp yarns (4Bf, 8Bf), the second connecting warp yarns (4Bs, 8Bs), and the third connecting warp yarns (3Bt, 7Bt), they are simply referred to as connecting warp yarns.

[0042] Next, refer to Figure 2 Sections (a) to (c) describe the weaving methods of each warp and weft yarn in the industrial fabric 10. Figure 2 The configurations of the upper and lower weft yarns shown in (a) to (c) are the same. Figure 2 (a) shows the way the upper warp yarn 2U and the lower warp yarn 2L are incorporated into the upper and lower weft yarns. Figure 2 As shown in (a), the upper side warp yarn 2U is woven into the upper side weft yarn (1'U~16'U) one by one, and passes over the upper side of the upper side weft yarn (2'U, 4'U, 6'U, 8'U, 10'U, 12'U, 14'U, 16'U) to form surface side yarn knots respectively, and passes under the upper side of the upper side weft yarn (1'U, 3'U, 5'U, 7'U, 9'U, 11'U, 13'U, 15'U).

[0043] The top-side warp yarns 6U and 2U are woven into the top-side weft yarns (1'U to 16'U) in the same manner. Furthermore, the top-side warp yarns (1U, 3U, 5U, 7U) and 2U are woven alternately into the top-side weft yarns (1'U to 16'U), but the weaving positions are offset by one along the warp direction. Thus, the top-side warp yarns (1U to 3U, 5U to 7U) have the same weaving pattern, forming yarn knots at regular intervals with respect to the top-side weft yarns (1'U to 16'U), and are woven alternately into the top-side weft yarns (1'U to 16'U) without altering (disrupting, disrupting) the surface structure. The top-side warp yarns (1U, 2U, 3U, 5U, 6U, 7U) are woven only into the top-side weft yarns (1'U to 16'U) and constitute part of the top-side fabric.

[0044] The lower warp yarn 2L passes under the lower weft yarns (1'L, 6'L, 11'L) to form back side yarn knots, and passes over the upper side of 3 lower weft yarns (2'L, 3'L, 5'L), 3 lower weft yarns (7'L, 9'L, 10'L), and 3 lower weft yarns (13'L, 14'L, 15'L) between each back side yarn knot.

[0045] The lower warp yarns (1L, 5L, 6L) have the same weaving pattern as the lower warp yarn 2L, alternating between the underside of one lower weft yarn and the upperside of three lower weft yarns. Thus, the lower warp yarns (1L, 2L, 5L, 6L) are woven only into the lower weft yarns (1'L~3'L, 5'L~7'L, 9'L~11'L, 13'L~15'L) to form part of the lower fabric. The same weaving pattern means that the number and spacing of yarn knots are the same, but deviations in the warp direction are allowed.

[0046] Figure 2 (b) shows the way the upper side warp 3U and the third knot warp 3Bt are incorporated into the upper side weft and the lower side weft. The upper side warp 3U and the third knot warp 3Bt are arranged in pairs, one above the other, and cross each other based on the knot of the third knot warp 3Bt.

[0047] The upper side warp yarn 3U passes over the upper side weft yarns (1'U, 3'U, 5'U, 7'U, 9'U, 11'U, 13'U) to form surface side yarn knots, and passes under the upper side weft yarns (2'U, 4'U, 6'U, 8'U, 10'U, 12'U, 14'U~16'U).

[0048] The third warp yarn 3Bt forms a yarn knot by passing under the lower side weft yarns (1'L, 6'L, 11'L) and also forms a yarn knot N3 by passing over the upper side weft yarn 15'U. The third warp yarn 3Bt alternately passes under one lower side weft yarn and over three lower side weft yarns for the lower side weft yarns (1'L~3'L, 5'L~7'L, 9'L~11'L, 13'L~15'L), thus forming yarn knots at certain intervals for the lower side fabric, and is woven into the lower side fabric without changing the back structure.

[0049] The third joining warp yarn 3Bt passes under the upper side weft yarns (1'U~14'U, 16'U) for the upper side fabric, and passes over the upper side weft yarn 15'U for joining, thus forming only one yarn knot N3 on the surface side.

[0050] At the position where the third warp yarn 3Bt forms a yarn knot N3 on the surface side, the upper warp yarn 3U passes under the upper weft yarn 15'U and does not form a yarn knot on the surface side, so that the upper warp yarn 3U functions as an upper change yarn 3U that changes part of the upper surface structure.

[0051] The upper side warp yarn 3U and the third knotting warp yarn 3Bt complement each other to complete the surface structure of the upper side fabric, thereby forming the same surface structure as the upper side warp yarns (1U, 2U, 5U, 6U) other than the upper side warp yarn 3U (upper side alteration yarn). The upper side surface structure forms the same number of yarn knots as the upper side warp yarns (1U, 2U, 5U, 6U) other than the upper side alteration yarn 3U. Thus, the reduction in the surface quality of the upper side fabric is suppressed by the third knotting warp yarn 3Bt. Furthermore, by knotting only the upper side alteration yarn 3U and the third knotting warp yarn 3Bt in the upper side weft yarns, the reduction in surface quality can be suppressed compared to the case where knotting warp yarns are arranged vertically. In addition, the knotting position of the upper side warp yarn 7U and the third knotting warp yarn 7Bt is also offset from that of the upper side warp yarn 3U and the third knotting warp yarn 3Bt in the warp direction, but they have the same weaving pattern, thus performing the same function.

[0052] Figure 2 (c) shows the way the first connecting warp 4Bf and the second connecting warp 4Bs are incorporated into the upper and lower weft yarns. The first connecting warp 4Bf and the second connecting warp 4Bs are arranged in pairs, one above the other, and cross each other for joining.

[0053] The first joining warp yarn 4Bf passes over the upper side of the upper weft yarns (2'U, 12'U, 14'U, 16'U) to form four yarn knots N1, and then passes under the remaining upper weft yarns (1'U, 3'U~11'U, 13'U, 15'U). Furthermore, the first joining warp yarn 4Bf passes under the lower side of the lower weft yarn 7'L to form a yarn knot, and then passes over the lower weft yarns (1'L~6'L, 8'L~15'L).

[0054] The second joining warp yarns 4Bs pass over the upper side of the upper weft yarns (4'U, 6'U, 8'U, 10'U) to form four yarn knots N2, and then pass under the remaining upper weft yarns (1'U~3'U, 5'U, 7'U, 9'U, 11'U~16'U). Furthermore, the second joining warp yarns 4Bs pass under the lower side of the lower weft yarns (2'L, 13'L) to form yarn knots, and then pass over the lower side of the lower weft yarns (1'L, 3'L~12'L, 14'L~15'L).

[0055] Thus, the first knotting warp yarn 4Bf and the second knotting warp yarn 4Bs complement each other to complete the surface structure of the upper side fabric, thereby forming the same surface structure as the upper side warp yarns (1U, 2U, 5U, 6U) other than the upper side changing yarn. The same number of yarn knots are formed on the upper side surface structure as on the upper side warp yarns (1U, 2U, 5U, 6U) other than the upper side changing yarn. Furthermore, the first knotting warp yarn 4Bf and the second knotting warp yarn 4Bs complement each other to complete the back structure of the lower side fabric, thereby forming yarn knots at regular intervals on the lower side fabric without altering the back structure. In addition, the knotting positions of the first knotting warp yarn 8Bf and the second knotting warp yarn 8Bs are also offset from those of the first knotting warp yarn 4Bf and the second knotting warp yarn 4Bs in the warp direction, but they have the same weaving pattern and therefore perform the same function.

[0056] The group of first connecting warp yarns 4Bf and second connecting warp yarns 4Bs is adjacent to the group of third connecting warp yarns 3Bt and upper side alteration yarn 3U. This strengthens the connection between the upper and lower side fabrics. Furthermore, the group of first connecting warp yarns 8Bf and second connecting warp yarns 8Bs, and the group of third connecting warp yarns 7Bt and upper side alteration yarn 7U have the same relationship as the group of first connecting warp yarns 4Bf and second connecting warp yarns 4Bs, and the group of third connecting warp yarns 3Bt and upper side alteration yarn 3U, therefore, description is omitted.

[0057] In the complete weave, the first and second connecting warp yarns 4Bf and 4Bs complement each other, and the third connecting warp yarn 3Bt and the upper side alteration yarn 3U complement each other, so that the first connecting warp yarn 4Bf and 4Bs, and the third connecting warp yarn 3Bt and the upper side alteration yarn 3U, form the same weave pattern on the upper side weft yarns (1'U to 16'U). The first connecting warp yarn 4Bf and 4Bs form a surface weave structure on the surface side of the upper side weft yarns (1'U to 16'U) that skips one upper side weft yarn to form a yarn knot. The third connecting warp yarn 3Bt and the upper side alteration yarn 3U also form a surface weave structure on the surface side of the upper side weft yarns (1'U to 16'U) that skips one upper side weft yarn to form a yarn knot. Thus, the group forming the first knot warp 4Bf and the second knot warp 4Bs shares the surface structure with the group forming the third knot warp 3Bt and the upper side alteration yarn 3U, thereby suppressing the reduction in the surface properties of the upper side fabric caused by the knot.

[0058] At the position of yarn knot N3 formed by the third joining warp yarn 3Bt passing over the upper side of the upper side weft yarn 15'U, the upper side alteration yarn 3U is positioned below the upper side weft yarn 15'U. Therefore, the upper side alteration yarn 3U suppresses the shrinkage of the upper side weft yarn 15'U caused by the joining. This suppresses the reduction in surface texture of the upper side fabric. The number of yarn knots N3 formed by the third joining warp yarn 3Bt passing over the upper side of the upper side weft yarn 15'U is less than the number of yarn knots N1 formed by the first joining warp yarn 4Bf passing over the upper side of the upper side weft yarn. Furthermore, the number of yarn knots N3 is less than the number of yarn knots N2. Therefore, the reduction in surface texture can be suppressed in the row of the third joining warp yarn 3Bt.

[0059] The number of warp yarns (1U-3U, 4Bf, 5U-7U, 8Bf, 1L-2L, 3Bt, 4Bs, 5L-6L, 7Bs, 8Bs) constituting a complete weave is a multiple of 4. This allows for the fabric to handle various weaves, including plain weave, twill weave, 2 / 2 weave with alternating weft yarns (two yarns per side), 4-axis weave, 8-axis weave, and 16-axis weave.

[0060] In the complete structure, the number of the first knot warp yarns (4Bf, 8Bf), the second knot warp yarns (4Bs, 8Bs), and the third knot warp yarns (3Bt, 7Bt) is less than half the total number of all warp yarns (1U–3U, 4Bf, 5U–7U, 8Bf, 1L–2L, 3Bt, 4Bs, 5L–6L, 7Bs, 8Bs). This reduces the number of knot warp yarns and suppresses the decrease in air permeability and surface properties.

[0061] The third knot warp yarn 3Bt and the upper-side alteration yarn 3U complement each other in the complete weave, thereby ensuring that the number and spacing of yarn knots formed on the upper-side weft yarns are the same as the number and spacing of yarn knots formed on the upper-side weft yarns by the upper-side warp yarns (1U, 2U, 5U, 6U) other than the upper-side alteration yarn 3U. This helps to suppress the reduction of the surface properties of the upper-side fabric.

[0062] The first and second joining warp yarns 4Bf and 4Bs complement each other in the complete weave, thereby ensuring that the number of yarn knots (N2, N3) formed on the upper side weft yarns is the same as the number of yarn knots formed on the upper side weft yarns by the upper side warp yarns (1U, 2U, 5U, 6U) other than the upper side changing line 3U. This helps to suppress the reduction of the surface properties of the upper side fabric.

[0063] [Second Implementation]

[0064] Figure 3 A design drawing showing the complete structure of the industrial fabric 20 according to the second embodiment. Figure 4 For along Figure 3 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0065] Figure 3 The industrial fabric 20 of the second embodiment shown is formed by joining an upper-side fabric consisting of upper-side warp yarns (1U-3U, 5U-8U) and upper-side weft yarns (1'U-16'U) with a lower-side fabric consisting of lower-side warp yarns (1L-3L, 5L-7L) and lower-side weft yarns (1'L-3'L, 5'L-7'L, 9'L-11'L, 13'L-15'L) through a first joining warp yarn 4Bf, a second joining warp yarn 4Bs, and a third joining warp yarn 8Bt. The upper-side weft yarns (1'U-16'U) constitute a part of the upper-side fabric. The lower-side weft yarns (1'L-3'L, 5'L-7'L, 9'L-11'L, 13'L-15'L) constitute a part of the lower-side fabric. The first joining warp yarn 4Bf, the second joining warp yarn 4Bs, and the third joining warp yarn 8Bt join the upper and lower side fabrics, respectively forming part of the upper and lower side fabrics.

[0066] Figure 4 (a) shows the way the upper side warp yarn 3U and the lower side warp yarn 3L are incorporated into the upper side weft yarn and the lower side weft yarn. Figure 4 The configurations of the top and bottom weft yarns shown in (a) to (c) are the same. Figure 4As shown in (a), the upper side warp yarn 3U is woven into the upper side weft yarn (1'U~16'U) one by one, and passes over the upper side of the upper side weft yarn (1'U, 3'U, 5'U, 7'U, 9'U, 11'U, 13'U, 15'U) to form surface side yarn knots respectively, and passes under the upper side of the upper side weft yarn (2'U, 4'U, 6'U, 8'U, 10'U, 12'U, 14'U, 16'U).

[0067] The top-side warp yarns 6U and 2U are woven into the top-side weft yarns (1'U to 16'U) in the same manner. Furthermore, the top-side warp yarns (1U, 3U, 5U, 7U) and 2U are woven alternately into the top-side weft yarns (1'U to 16'U), but the weaving positions are offset by one along the warp direction. Thus, the top-side warp yarns (1U to 3U, 5U to 7U) have the same weaving pattern, forming yarn knots at regular intervals with respect to the top-side weft yarns (1'U to 16'U), and are woven alternately into the top-side weft yarns (1'U to 16'U) without altering the surface structure. The top-side warp yarns (1U to 3U, 5U to 7U) are woven only into the top-side weft yarns (1'U to 16'U) and constitute a part of the top-side fabric.

[0068] The lower warp yarn 3L passes under the lower weft yarns (1'L, 6'L, 11'L) to form back side yarn knots, and passes over the upper side of 3 lower weft yarns (2'L, 3'L, 5'L), 3 lower weft yarns (7'L, 9'L, 10'L), and 3 lower weft yarns (13'L, 14'L, 15'L) between each back side yarn knot.

[0069] The other underside warp yarns (1L-2L, 5L-7L) have the same weaving pattern as underside warp yarn 3L, alternating between the underside of one underside weft yarn and the upper side of three underside weft yarns. Thus, the underside warp yarns (1L-3L, 5L-7L) are woven only into the underside weft yarns (1'L-3'L, 5'L-7'L, 9'L-11'L, 13'L-15'L) to form part of the underside fabric.

[0070] Figure 4 (b) shows the way the first connecting warp 4Bf and the second connecting warp 4Bs are incorporated into the upper and lower weft yarns. The first connecting warp 4Bf and the second connecting warp 4Bs are arranged in pairs, one above the other, and cross each other for joining.

[0071] The first joining warp yarn 4Bf passes over the upper side of the upper weft yarns (2'U, 12'U, 14'U, 16'U) to form four yarn knots N1, and then passes under the remaining upper weft yarns (1'U, 3'U~11'U, 13'U, 15'U). Furthermore, the first joining warp yarn 4Bf passes under the lower side of the lower weft yarn 7'L to form a yarn knot, and then passes over the lower weft yarns (1'L~6'L, 8'L~15'L).

[0072] The second joining warp yarns 4Bs pass over the upper side of the upper weft yarns (4'U, 6'U, 8'U, 10'U) to form four yarn knots N2, and then pass under the remaining upper weft yarns (1'U~3'U, 5'U, 7'U, 9'U, 11'U~16'U). Furthermore, the second joining warp yarns 4Bs pass under the lower side of the lower weft yarns (2'L, 13'L) to form yarn knots, and then pass over the lower side of the lower weft yarns (1'L, 3'L~12'L, 14'L~15'L).

[0073] Thus, the first knotting warp yarn 4Bf and the second knotting warp yarn 4Bs complement each other to complete the surface structure of the upper side fabric, thereby forming the same surface structure as the upper side warp yarns (1U-3U, 5U-7U), and forming the same number of yarn knots on the upper side surface structure as the upper side warp yarns (1U-3U, 5U-7U). Furthermore, the first knotting warp yarn 4Bf and the second knotting warp yarn 4Bs complement each other to complete the back structure of the lower side fabric, thereby forming yarn knots at regular intervals on the lower side fabric and weaving them into the lower side fabric without altering the back structure.

[0074] Figure 4 (c) shows the way the upper side warp 8U and the third knot warp 8Bt are incorporated into the upper side weft and the lower side weft. The upper side warp 8U and the third knot warp 8Bt are arranged in pairs, one above the other, and cross each other based on the knot of the third knot warp 8Bt.

[0075] The top side warp yarn 8U passes over the top side weft yarns (4'U, 6'U, 8'U, 10'U, 12'U, 14'U, 16'U) to form surface side yarn knots, and then passes under the top side weft yarns (1'U, 2'U, 3'U, 5'U, 7'U, 9'U, 11'U, 13'U, 15'U).

[0076] The third knot warp yarn 8Bt passes over the upper side of the upper weft yarn 2'U to form a yarn knot N3, and passes under the lower side of the lower weft yarns (5'L, 10'L, 15'L) to form a yarn knot. The third knot warp yarn 8Bt is woven into the lower side weft yarns (1'L~3'L, 5'L~7'L, 9'L~11'L, 13'L~15'L) in an alternating manner, passing under the lower side of one lower side weft yarn and over the upper side of three lower side weft yarns, forming yarn knots at certain intervals on the lower side fabric, and is woven into the lower side fabric without changing the back structure.

[0077] The third joining warp yarn 8Bt passes under the upper side weft yarns (1'U, 3'U~16'U) for the upper side fabric, and passes over the upper side weft yarn 2'U for joining, thus forming only one yarn knot N3 on the surface side.

[0078] At the position where the third warp yarn 8Bt forms a yarn knot N3 on the surface side, the upper warp yarn 8U passes under the upper weft yarn 2'U and does not form a yarn knot on the surface side. Thus, the upper warp yarn 8U functions as an upper change yarn 8U that changes part of the upper surface structure.

[0079] The upper warp yarn 8U and the third knot warp yarn 8Bt complement each other to complete the surface structure of the upper fabric, thereby forming the same surface structure as the upper warp yarns (1U-3U, 5U-7U) other than the upper warp yarn 8U (upper warp yarn alteration yarn). The upper surface structure forms the same number of yarn knots as the upper warp yarns (1U-3U, 5U-7U) other than the upper warp yarn 8U. Thus, the reduction in the surface texture of the upper fabric is suppressed by the third knot warp yarn 8Bt. At the position where the third knot warp yarn 8Bt forms yarn knot N3, the upper warp yarn alteration yarn 8U is positioned below the upper weft yarn 2'U. Therefore, the upper warp yarn alteration yarn 8U suppresses the shrinkage of the upper weft yarn 2'U caused by the knotting of the third knot warp yarn 8Bt. Thus, the reduction in the surface texture of the upper fabric can be suppressed. By joining only the upper side of the weft yarn 8U and the third joining warp yarn 8Bt, the reduction in surface quality and air permeability can be suppressed compared to the case where the joining warp yarns are set at the top and bottom.

[0080] In the complete weave, the first and second connecting warp yarns 4Bf and the third connecting warp yarn 8Bt and the upper side alteration yarn 8U complement each other, forming the same weave pattern for the upper side weft yarns (1'U to 16'U). This same weave pattern can be achieved by arranging yarn knots at the same intervals, including cases where they are staggered in the warp direction. The first and second connecting warp yarns 4Bf and the second connecting warp yarns 4Bs form a surface weave structure on the surface side that skips one upper side weft yarn to form a yarn knot for the upper side weft yarns (1'U to 16'U). The third connecting warp yarn 3Bt and the upper side alteration yarn 3U also form a surface weave structure on the surface side that skips one upper side weft yarn to form a yarn knot for the upper side weft yarns (1'U to 16'U). Thus, the group forming the first knot warp 4Bf and the second knot warp 4Bs shares the surface structure with the group forming the third knot warp 8Bt and the upper side alteration yarn 8U, thereby suppressing the reduction in the surface properties of the upper side fabric caused by the knot.

[0081] The group of the first bonding warp 4Bf and the second bonding warp 4Bs is not adjacent to the group of the third bonding warp 8Bt and the upper side changing yarn 8U. Therefore, the bonding positions that contribute to reduced surface texture can be dispersed, and compared to a densely packed bonding position, the formation of marks on paper made of industrial fabric 20 can be suppressed.

[0082] In the complete structure, the number of the first knotting warp yarn 4Bf, the second knotting warp yarn 4Bs, and the third knotting warp yarn 8Bt is less than half the total number of all warp yarns (1U-3U, 4Bf, 5U-8U, 1L-3L, 4Bs, 5L-7L, 8Bt). This reduces the number of knotting yarns and suppresses the decrease in air permeability and surface properties.

[0083] The number of warp yarns (1U-3U, 4Bf, 5U-8U, 1L-3L, 4Bs, 5L-7L, 8Bt) constituting a complete weave is a multiple of 4. This allows for the fabric to accommodate various weave structures, including plain weave, twill weave, 2 / 2 weave with alternating weft yarns, 4-axis weave, 8-axis weave, and 16-axis weave.

[0084] [Third Implementation Method]

[0085] Figure 5 This is a design drawing showing the complete structure of the industrial fabric 30 according to the third embodiment. Figure 6 For along Figure 5 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0086] Figure 5The industrial fabric 30 of the third embodiment shown is joined by first connecting warp yarns (3Bf, 7Bf), second connecting warp yarns (3Bs, 7Bs), and third connecting warp yarns (4Bt, 8Bt) to form an upper side fabric consisting of upper side warp yarns (1U, 2U, 4U, 5U, 6U, 8U) and upper side weft yarns (1'U to 16'U) and a lower side fabric consisting of lower side warp yarns (1L, 2L, 5L, 6L) and lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L). The upper side weft yarns (1'U to 16'U) constitute a part of the upper side fabric. The lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) constitute a part of the lower side fabric. The first connecting warp yarn (3Bf, 7Bf), the second connecting warp yarn (3Bs, 7Bs), and the third connecting warp yarn (4Bt, 8Bt) connect the top and bottom fabrics, respectively forming a part of the top and bottom fabrics.

[0087] Figure 6 The configurations of the upper and lower weft yarns shown in (a) to (c) are the same. Figure 6 (a) shows the way the upper warp yarn 2U and the lower warp yarn 2L are incorporated into the upper and lower weft yarns. Figure 6 As shown in (a), the upper side warp yarns 2U are alternately woven into the upper side weft yarns (1'U~16'U) in a ratio of 1 on the upper side and 3 on the lower side, and pass over the upper side weft yarns (3'U, 7'U, 11'U, 15'U) to form surface side yarn knots respectively, and pass under the upper side weft yarns (1'U, 2'U, 4'U~6'U, 8'U~10'U, 12'U~14'U, 16'U).

[0088] The other top-side warp yarns (1U, 4U-6U, 8U) also have the same weaving pattern as the top-side warp yarn 2U, and are woven into the top-side weft yarns (1'U-16'U) alternately in a ratio of 1 on the top side and 3 on the bottom side, without changing the surface structure. The top-side warp yarns (1U, 2U, 4U-6U, 8U) are woven only into the top-side weft yarns (1'U-16'U) and constitute part of the top-side fabric.

[0089] The lower warp yarn 2L passes under the lower weft yarns (5'L, 15'L) to form back side yarn knots, and passes over the upper side of 2 lower weft yarns (1'L, 3'L) and 4 lower weft yarns (7'L, 9'L, 11'L, 13'L) between each back side yarn knot.

[0090] The other underside warp yarns (1L, 5L, 6L) also have the same weaving pattern as underside warp yarn 2L, forming two backside yarn knots respectively. They are woven in between the backside yarn knots, passing over the top of two and four underside weft yarns. Thus, the underside warp yarns (1L, 2L, 5L, 6L) are woven only into the underside weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) to form part of the underside fabric.

[0091] Figure 6 (b) shows the way the first connecting warp 3Bf and the second connecting warp 3Bs are incorporated into the upper and lower weft yarns. The first connecting warp 3Bf and the second connecting warp 3Bs are arranged in pairs, one above the other, and cross each other for joining.

[0092] The first connecting warp yarn 3Bf passes over the upper side of the upper weft yarns (8'U, 12'U) to form two yarn knots N1, and then passes under the remaining upper weft yarns (1'U~7'U, 9'U~11'U, 13'U~16'U). Furthermore, the first connecting warp yarn 3Bf passes under the lower side of the lower weft yarn 5'L to form a yarn knot, and then passes over the lower weft yarns (1'L, 3'L, 7'L, 11'L, 13'L, 15'L).

[0093] The second joining warp yarn 3Bs passes over the upper side of the upper weft yarns (4'U, 16'U) to form two yarn knots N2, and then passes under the remaining upper weft yarns (1'U~3'U, 5'U~15'U). Furthermore, the second joining warp yarn 3Bs passes under the lower side of the lower weft yarn 11'L to form a yarn knot, and then passes over the lower weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 13'L, 15'L).

[0094] The first knot warp yarn 3Bf and the second knot warp yarn 3Bs complement each other to complete the surface structure of the upper fabric, thereby forming yarn knots (N1, N2) at regular intervals in the upper fabric and weaving them into the upper fabric without changing the surface structure. Furthermore, the first knot warp yarn 3Bf and the second knot warp yarn 3Bs complement each other to complete the back structure of the lower fabric, thereby forming yarn knots at regular intervals in the lower fabric and weaving them into the lower fabric without changing the back structure.

[0095] Figure 6 (c) shows the way the upper side warp 4U and the third knot warp 4Bt are incorporated into the upper side weft and the lower side weft. The upper side warp 4U and the third knot warp 4Bt are arranged in pairs, one above the other, and cross each other based on the knot of the third knot warp 4Bt.

[0096] The upper side warp yarn 4U passes over the upper side weft yarns (2'U, 10'U, 14'U) to form surface side yarn knots, and then passes under the upper side weft yarns (1'U, 3'U~9'U, 11'U~13'U, 15'U, 16'U).

[0097] The third knot warp yarn 4Bt passes under the lower side weft yarns (1'L, 11'L) to form a yarn knot on the back side, and forms a yarn knot N3 passing over the upper side weft yarn 6'U. The third knot warp yarn 4Bt passes over the four lower side weft yarns (3'L, 5'L, 7'L, 9'L) and two lower side weft yarns (13'L, 15'L) between each back side yarn knot. The third knot warp yarn 4Bt is woven into the lower side fabric with the same weave pattern as the lower side warp yarns (1L, 2L, 5L, 6L), and is woven into the lower side fabric without changing the back side structure.

[0098] At the location where the third knot warp yarn 4Bt forms a yarn knot N3 on the surface side, the upper side warp yarn 4U passes under the upper side weft yarn 6'U and does not form a yarn knot on the surface side. Thus, the upper side warp yarn 4U functions as an upper side alteration yarn 4U, which is part of the upper side surface structure. Furthermore, the group of upper side warp yarn 8U and the third knot warp yarn 8Bt also has the same weaving pattern as the upper side warp yarn 4U and the third knot warp yarn 4Bt, and performs the same function. Therefore, the upper side warp yarn 4U and the third knot warp yarn 4Bt will be mainly described.

[0099] The upper warp yarn 4U and the third knotting warp yarn 4Bt complement each other to complete the surface structure of the upper fabric, thereby forming the same surface structure as the upper warp yarns (1U, 2U, 5U, 6U) other than the upper warp yarns (upper warp yarns 4U, 8U). The upper surface structure forms yarn knots arranged in the same number and at the same intervals as the upper warp yarns (1U, 2U, 5U, 6U) other than the upper warp yarns (upper warp yarns 4U, 8U). Thus, the reduction in the surface quality of the upper fabric is suppressed by the third knotting warp yarn 4Bt. Furthermore, by knotting only the upper warp yarns 4U and the third knotting warp yarn 4Bt woven into the upper weft yarns, the reduction in surface quality can be suppressed compared to the case where knotting warp yarns are arranged vertically.

[0100] In the complete structure, the first and second knotting warp yarns (3Bf, 7Bf) and the third knotting warp yarns (4Bt, 8Bt) and the upper side alteration yarns (4U, 8U) complement each other, thus forming the same surface structure for the upper side weft yarns (1'U to 16'U). The first and second knotting warp yarns (3Bs, 7Bs) and the third knotting warp yarns (4Bt, 8Bt) and the upper side alteration yarns (4U, 8U) also complement each other. The first and second knotting warp yarns (3Bf, 7Bf) and the second knotting warp yarns (3Bs, 7Bs) form a surface structure on the surface side that skips three upper side weft yarns, creating a yarn knot. The group of third-joining warp yarns (4Bt, 8Bt) and top-side alteration yarns (4U, 8U) also forms a surface structure on the surface side that skips three top-side weft yarns to form a yarn knot for the top-side weft yarns (1'U to 16'U). In this way, the group of first-joining warp yarns (3Bf, 7Bf) and second-joining warp yarns (3Bs, 7Bs) shares the surface structure on the surface side with the group of third-joining warp yarns (4Bt, 8Bt) and top-side alteration yarns (4U, 8U), thereby suppressing the reduction in surface quality of the top-side fabric caused by the joining.

[0101] The first and second bonding warp yarns (3Bf, 7Bf) are adjacent to the third bonding warp yarns (4Bt, 8Bt) and the upper side alteration yarns (4U, 8U). Thus, the bonding parts are arranged close to each other, and the upper and lower side fabrics are securely bonded together.

[0102] The total number of warp yarns constituting a complete weave is a multiple of 4. This allows for the fabric to accommodate various weaves, including plain weave, twill weave, 2 / 2 weave with alternating weft yarns (two on each side), 4-axis weave, 8-axis weave, and 16-axis weave.

[0103] In the complete structure, the number of the first knot warp yarns (3Bf, 7Bf), the second knot warp yarns (3Bs, 7Bs), and the third knot warp yarns (4Bt, 8Bt) is less than half the total number of warp yarns. This reduces the number of knot yarns and suppresses the decrease in air permeability and surface properties.

[0104] [Fourth Implementation Method]

[0105] Figure 7 This is a design drawing showing the complete structure of the industrial fabric 40 according to the fourth embodiment. Figure 8 For along Figure 7 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0106] Figure 7The industrial fabric 40 of the fourth embodiment shown is joined by a first joining warp yarn 8Bf, a second joining warp yarn 8Bs, and a third joining warp yarn 4Bt to form an upper side fabric consisting of upper side warp yarns (1U-7U) and upper side weft yarns (1'U-16'U), and a lower side fabric consisting of lower side warp yarns (1L-3L, 5L-7L) and lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L). The upper side weft yarns (1'U-16'U) constitute a part of the upper side fabric. The lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) constitute a part of the lower side fabric. The first joining warp yarn 8Bf, the second joining warp yarn 8Bs, and the third joining warp yarn 4Bt join the upper and lower side fabrics, respectively forming a part of the upper and lower side fabrics.

[0107] Figure 8 The configurations of the upper and lower weft yarns shown in (a) to (c) are the same. Figure 8 (a) shows the way the upper warp yarn 3U and the lower warp yarn 3L are incorporated into the upper and lower weft yarns. Figure 8 As shown in (a), the upper side warp yarns 3U are alternately woven into the upper side weft yarns (1'U~16'U) in a ratio of 1 above and 3 below, and pass over the upper side of the upper side weft yarns (4'U, 8'U, 12'U, 16'U) to form surface side yarn knots, and pass under the upper side of the upper side weft yarns (1'U~3'U, 5'U~7'U, 9'U~11'U, 13'U~15'U).

[0108] The other top-side warp yarns (1U, 2U, 4U to 7U) also have the same weaving pattern as the top-side warp yarn 3U, alternating between one top-side and three bottom-side yarns woven into the top-side weft yarns (1'U to 16'U), without altering the surface structure. The top-side warp yarns (1U to 7U) are woven only into the top-side weft yarns (1'U to 16'U) and constitute part of the top-side fabric.

[0109] The lower warp yarn 3L passes under the lower weft yarns (5'L, 11'L) to form back side yarn knots, and passes over the upper side of 2 lower weft yarns (7'L, 9'L) and 4 lower weft yarns (1'L, 3'L, 13'L, 15'L) between each back side yarn knot.

[0110] The other underside warp yarns (1L, 2L, 5L-7L) also have the same weaving pattern as underside warp yarn 3L, forming two backside yarn knots respectively, and are woven in between the backside yarn knots by passing over the upper side of two and four underside weft yarns. In this way, the underside warp yarns (1L-3L, 5L-7L) are woven only into the underside weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) to form part of the underside fabric.

[0111] Figure 8 (b) shows the way the upper side warp 4U and the third knot warp 4Bt are incorporated into the upper side weft and the lower side weft. The upper side warp 4U and the third knot warp 4Bt are arranged in pairs, one above the other, and cross each other based on the knot of the third knot warp 4Bt.

[0112] The upper side warp yarn 4U passes over the upper side weft yarns (2'U, 10'U, 14'U) to form surface side yarn knots, and then passes under the upper side weft yarns (1'U, 3'U~9'U, 11'U~13'U, 15'U, 16'U).

[0113] The third knot warp yarn 4Bt passes under the lower side weft yarns (1'L, 11'L) to form a yarn knot on the back side, and forms a yarn knot N3 passing over the upper side weft yarn 6'U. The third knot warp yarn 4Bt passes over the upper side of four lower side weft yarns (3'L, 5'L, 7'L, 9'L) and two lower side weft yarns (13'L, 15'L) between each back side yarn knot. The third knot warp yarn 4Bt is woven into the lower side fabric with the same weaving pattern as the lower side warp yarns (1L~3L, 5L~7L), and is woven into the lower side fabric without changing the back side structure.

[0114] At the position where the third warp yarn 4Bt forms a yarn knot N3 on the surface side, the upper warp yarn 4U passes under the upper weft yarn 6'U and does not form a yarn knot on the surface side. The upper warp yarn 4U functions as an upper change yarn 4U that changes part of the upper surface structure.

[0115] The upper warp yarn 4U and the third knotting warp yarn 4Bt complement each other to complete the surface structure of the upper fabric, thereby forming the same surface structure as the upper warp yarns (1U-3U, 5U-7U) other than the upper warp yarn (upper warp yarn 4U). The upper surface structure forms yarn knots arranged in the same number and at the same intervals as the upper warp yarns (1U-3U, 5U-7U) other than the upper warp yarn (upper warp yarn 4U). Thus, the reduction in the surface quality of the upper fabric is suppressed by the third knotting warp yarn 4Bt. Furthermore, by knotting only the upper warp yarn 4U and the third knotting warp yarn 4Bt woven into the upper weft yarns, the reduction in surface quality can be suppressed compared to the case where knotting warp yarns are arranged vertically.

[0116] Figure 8 (c) shows the way the first connecting warp 8Bf and the second connecting warp 8Bs are incorporated into the upper and lower weft yarns. The first connecting warp 8Bf and the second connecting warp 8Bs are arranged in pairs, one above the other, and cross each other for joining.

[0117] The first connecting warp yarn 8Bf passes over the upper side of the upper weft yarns (2'U, 6'U) to form two yarn knots N1, and then passes under the remaining upper weft yarns (1'U, 3'U~5'U, 7'U~16'U). Furthermore, the first connecting warp yarn 8Bf passes under the lower side of the lower weft yarn 9'L to form a yarn knot, and then passes over the remaining lower weft yarns (1'L, 3'L, 5'L, 7'L, 11'L, 13'L, 15'L).

[0118] The second joining warp yarn 8Bs passes over the upper side of the upper weft yarns (10'U, 14'U) to form two yarn knots N2, and then passes under the remaining upper weft yarns (1'U~9'U, 11'U~13'U, 15'U, 16'U). Furthermore, the second joining warp yarn 8Bs passes under the lower side of the lower weft yarn (3'L) to form a yarn knot, and then passes over the remaining lower weft yarns (1'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L).

[0119] Thus, the first and second connecting warp yarns 8Bf and 8Bs complement each other to complete the surface structure of the upper fabric, thereby forming the same surface structure as the upper warp yarns (1U-3U, 5U-7U), and forming the same number and spacing of yarn knots in the upper surface structure as the upper warp yarns (1U-3U, 5U-7U). Furthermore, the first and second connecting warp yarns 8Bf and 8Bs complement each other to complete the back structure of the lower fabric, thereby forming yarn knots at regular intervals in the lower fabric and weaving them into the lower fabric without altering the back structure.

[0120] In the complete weave, the first and second warp yarns 8Bf and the third warp yarn 4Bt and the upper-side alteration yarn 4U complement each other, forming the same surface structure for the upper-side weft yarns (1'U to 16'U). The first and second warp yarns 8Bf and the third warp yarn 4Bt and the upper-side alteration yarn 4U complement each other. The first and second warp yarns 8Bf and the second warp yarns 8Bs form a surface structure on the surface side that skips three upper-side weft yarns to form a yarn knot for the upper-side weft yarns (1'U to 16'U). The third warp yarn 4Bt and the upper-side alteration yarn 4U also form a surface structure on the surface side that skips three upper-side weft yarns to form a yarn knot for the upper-side weft yarns (1'U to 16'U). Thus, the group of the first knotting warp yarn 8Bf and the second knotting warp yarn 8Bs shares a surface structure on the surface side with the group of the third knotting warp yarn 4Bt and the upper side alteration yarn 4U, thereby suppressing the reduction of the surface properties of the upper side fabric caused by the knotting.

[0121] The group of first-joining warp yarns 8Bf and second-joining warp yarns 8Bs is not adjacent to the group of third-joining warp yarns 4Bt and the upper-side changing yarn 4U. In the complete weave, the number of first-joining warp yarns 8Bf, second-joining warp yarns 8Bs, and third-joining warp yarns 4Bt combined is less than half the total number of warp yarns. The total number of warp yarns constituting the complete weave is a multiple of 4.

[0122] [Fifth Implementation Method]

[0123] Figure 9 This is a design drawing showing the complete structure of the industrial fabric 50 according to the fifth embodiment. Figure 10 For along Figure 9 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0124] Figure 9The industrial fabric 50 of the fifth embodiment shown is joined by first connecting warp yarns (1Bf, 5Bf), second connecting warp yarns (1Bs, 5Bs), and third connecting warp yarns (3Bt, 7Bt) to form an upper side fabric consisting of upper side warp yarns (3U, 7U) and upper side weft yarns (1'U to 16'U) and a lower side fabric consisting of lower side warp yarns (2L, 4L, 6L, 8L) and lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L). The upper side weft yarns (1'U to 16'U) constitute a part of the upper side fabric. The lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) constitute a part of the lower side fabric. The first connecting warp yarns (1Bf, 5Bf), the second connecting warp yarns (1Bs, 5Bs), and the third connecting warp yarns (3Bt, 7Bt) connect the top and bottom fabrics, forming a portion of each. The number of bottom warp yarns is twice that of the top warp yarns, thus reducing the density of the top warp yarns and allowing for more top weft yarns to be incorporated compared to the usual 1:1 ratio.

[0125] Figure 10 (a) shows the way in which the first connecting warp 1Bf and the second connecting warp 1Bs are incorporated into the upper and lower side weft yarns. Figure 10 The configuration of the upper and lower weft yarns shown in (a) and (c) is the same. The first knotting warp 1Bf and the second knotting warp 1Bs are arranged in pairs, one above the other, and cross each other for knotting.

[0126] The first connecting warp yarn 1Bf passes over the upper side of the upper weft yarns (1'U, 9'U, 11'U, 13'U, 15'U) to form five yarn knots N1, and then passes under the remaining upper weft yarns (2'U~8'U, 10'U, 12'U, 14'U, 16'U). Furthermore, the first connecting warp yarn 1Bf passes under the lower side of the lower weft yarn 5'L to form a yarn knot, and then passes over the lower side of the lower weft yarns (1'L, 3'L, 7'L, 9'L, 11'L, 13'L, 15'L).

[0127] The second joining warp yarn 1Bs passes over the upper side of the upper weft yarns (3'U, 5'U, 7'U) to form three yarn knots N2, and then passes under the remaining upper weft yarns (1'U, 2'U, 4'U, 6'U, 8'U to 16'U). Furthermore, the second joining warp yarn 1Bs passes under the lower side of the lower weft yarn 11'L to form a yarn knot, and then passes over the lower weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 13'L, 15'L).

[0128] Thus, the first knotting warp yarn 1Bf and the second knotting warp yarn 1Bs complement each other to complete the surface structure of the upper fabric, thereby being woven into the upper fabric one yarn at a time without altering the surface structure. Furthermore, the first knotting warp yarn 1Bf and the second knotting warp yarn 1Bs complement each other to complete the back structure of the lower fabric, thereby forming yarn knots at regular intervals in the lower fabric without altering the back structure. Moreover, the knotting positions of the first knotting warp yarn 5Bf and the second knotting warp yarn 5Bs are also offset from those of the first knotting warp yarn 1Bf and the second knotting warp yarn 1Bs in the warp direction, but they have the same weaving pattern and therefore perform the same function.

[0129] Figure 10 (b) shows the way the lower side warp yarn 2L is woven into the lower side weft yarn. The lower side warp yarn 2L passes under the lower side weft yarns (1'L, 11'L) to form back side yarn knots, and passes over the four lower side weft yarns (3'L, 5'L, 7'L, 9'L) and two lower side weft yarns (13'L, 15'L) between each back side yarn knot.

[0130] The lower side warp yarns (4L, 6L, 8L) have the same weaving pattern as the lower side warp yarn 2L, forming two back side yarn knots. Between these back side yarn knots, four lower side weft yarns and two lower side weft yarns pass over the top. Thus, the lower side warp yarns (2L, 4L, 6L, 8L) are woven only into the lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) to form part of the lower side fabric.

[0131] Figure 10 (c) shows the way the upper side warp 3U and the third knot warp 3Bt are incorporated into the upper side weft and the lower side weft. The upper side warp 3U and the third knot warp 3Bt are arranged in pairs, one above the other, and cross each other based on the knot of the third knot warp 3Bt.

[0132] The top side warp yarn 3U passes over the top side weft yarns (2'U, 4'U, 6'U, 8'U, 10'U, 14'U, 16'U) to form surface side yarn knots, and then passes under the top side weft yarns (1'U, 3'U, 5'U, 7'U, 9'U, 11'U~13'U, 15'U).

[0133] The third knot warp yarn 3Bt passes under the lower side weft yarns (1'L, 7'L) to form a yarn knot, and forms a yarn knot N3 passing over the upper side weft yarn 12'U. The third knot warp yarn 3Bt passes over two lower side weft yarns (3'L, 5'L) and four lower side weft yarns (9'L, 11'L, 13'L, 15'L) between the back side yarn knots of the lower side weft yarns (1'L, 7'L). The third knot warp yarn 4Bt is woven into the lower side fabric with the same weaving pattern as the lower side warp yarns (2L, 4L, 6L, 8L), and is woven into the lower side fabric without changing the back side structure.

[0134] The third joining warp yarn 3Bt passes under the upper side weft yarns (1'U~11'U, 13'U~16'L) for the upper side fabric, and passes over the upper side weft yarn 12'U for joining, forming only one yarn knot N3 on the surface side.

[0135] At the position where the third warp yarn 3Bt forms a yarn knot N3 on the surface side, the upper warp yarn 3U passes under the upper weft yarn 12'U and does not form a yarn knot on the surface side. The upper warp yarn 3U functions as an upper change yarn 3U that changes part of the upper surface structure.

[0136] The upper-side warp yarn 3U and the third-joining warp yarn 3Bt complement each other to complete the surface structure of the upper-side fabric, thereby forming yarn knots at regular intervals on the surface structure of the upper-side fabric. This, in turn, suppresses the reduction in surface quality of the upper-side fabric through the third-joining warp yarn 3Bt. Furthermore, by joining only the upper-side alteration yarn 3U and the third-joining warp yarn 3Bt woven into the upper-side weft yarn, the reduction in surface quality can be suppressed compared to the case where joining warp yarns are arranged vertically. Moreover, the joining position of the upper-side warp yarn 7U and the third-joining warp yarn 7Bt is also offset from that of the upper-side warp yarn 3U and the third-joining warp yarn 3Bt in the warp direction, but they have the same weaving pattern, thus performing the same function.

[0137] In the complete structure, the first and second knotting warp yarns (1Bf, 5Bf) and the third knotting warp yarns (3Bt, 7Bt) and the upper side alteration yarns (3U, 7U) complement each other, thus forming the same surface structure for the upper side weft yarns (1'U to 16'U). The first and second knotting warp yarns (1Bs, 5Bs) and the third knotting warp yarns (3Bt, 7Bt) and the upper side alteration yarns (3U, 7U) also complement each other. The first and second knotting warp yarns (1Bf, 5Bf) and the second knotting warp yarns (1Bs, 5Bs) form a surface structure on the surface side that skips one upper side weft yarn, thus forming a yarn knot. The group of third-joining warp yarns (3Bt, 7Bt) and top-side alteration yarns (3U, 7U) also forms a surface structure on the surface side that skips one top-side weft yarn to form a yarn knot for the top-side weft yarns (1'U to 16'U). In this way, the group of first-joining warp yarns (1Bf, 5Bf) and second-joining warp yarns (1Bs, 5Bs) shares the surface structure on the surface side with the group of third-joining warp yarns (3Bt, 7Bt) and top-side alteration yarns (3U, 7U), thereby suppressing the reduction in surface quality of the top-side fabric caused by the joining.

[0138] The groups of the first and second knotting warp yarns (1Bf, 5Bf) and the third knotting warp yarns (3Bt, 7Bt) and the top side-changing yarns (3U, 7U) are not adjacent. The total number of warp yarns constituting the complete weave is a multiple of 4.

[0139] In the complete weave, the number of the first-joining warp yarns (1Bf, 5Bf), the second-joining warp yarns (1Bs, 5Bs), and the third-joining warp yarns (3Bt, 7Bt) combined is more than half the number of all warp yarns (1Bf, 1Bs, 2L; 3U, 3Bt, 4L; 5Bf, 5Bs, 6L; 7U, 7Bt, 8L). This strengthens the joint force and suppresses internal friction between the upper and lower fabrics.

[0140] The number of knotting yarns formed by the first knotting warp 1Bf in the upper side fabric (five) is different from the number of knotting yarns formed by the second knotting warp 1Bs in the upper side fabric (three). Thus, the upper and lower side knotting yarns have different weaves. Generally, the intersection of the two knotting yarns tends to exhibit the following trends: (i) decreased dehydration; (ii) locally severe indentation of the upper side weft yarn. Therefore, if the intersection is regularly arranged, marks (weft yarn marks, regularly slanted marks) are easily produced. In particular, when the knotting yarns are of the same weave, regularity occurs, thus easily leading to the aforementioned problems. Therefore, as with industrial fabric 50, the two knotting yarns are made of different weaves, thereby reducing the regularity of the intersection arrangement of the two knotting yarns. As a result, the generation of marks is suppressed.

[0141] The warp yarns woven into the upper side fabric consist only of groups of first-joining warp yarns (1Bf, 5Bf) and second-joining warp yarns (1Bs, 5Bs), groups of third-joining warp yarns (3Bt, 7Bt) and upper side alteration yarns (3U, 7U), all composed of joined warp yarn rows. This increases the number of joining yarns, strengthening the bond (restraint) between the upper and lower side fabrics, thereby suppressing internal wear.

[0142] [Sixth Implementation Method]

[0143] Figure 11 A design drawing showing the complete structure of the industrial fabric 60 according to the sixth embodiment. Figure 12 For along Figure 11 The design drawing shown is a cross-sectional view of the warp direction of the warp yarns.

[0144] Figure 11 The industrial fabric 60 of the sixth embodiment shown is joined by a first joining warp yarn 1Bf, a second joining warp yarn 1Bs, and a third joining warp yarn 5Bt to form an upper side fabric consisting of upper side warp yarns (3U, 5U, 7U) and upper side weft yarns (1'U to 16'U), and a lower side fabric consisting of lower side warp yarns (2L to 4L, 6L to 8L) and lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L). The upper side weft yarns (1'U to 16'U) constitute a part of the upper side fabric. The lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) constitute a part of the lower side fabric. The first connecting warp yarn 1Bf, the second connecting warp yarn 1Bs, and the third connecting warp yarn 5Bt connect the upper and lower side fabrics, respectively forming a part of the upper and lower side fabrics.

[0145] Figure 12(a) shows the way in which the first connecting warp 1Bf and the second connecting warp 1Bs are incorporated into the upper and lower side weft yarns. Figure 12 The configurations of the upper and lower weft yarns shown in (a) to (d) are the same. The first knotting warp 1Bf and the second knotting warp 1Bs are arranged in pairs, one above the other, and cross each other for knotting.

[0146] The first connecting warp yarn 1Bf passes over the upper side of the upper weft yarns (1'U, 9'U, 11'U, 13'U, 15'U) to form five yarn knots N1, and then passes under the remaining upper weft yarns (2'U~8'U, 10'U, 12'U, 14'U, 16'U). Furthermore, the first connecting warp yarn 1Bf passes under the lower side of the lower weft yarn 5'L to form a yarn knot, and then passes over the lower side of the lower weft yarns (1'L, 3'L, 7'L, 9'L, 11'L, 13'L, 15'L).

[0147] The second joining warp yarn 1Bs passes over the upper side of the upper weft yarns (3'U, 5'U, 7'U) to form three yarn knots N2, and then passes under the remaining upper weft yarns (1'U, 2'U, 4'U, 6'U, 8'U to 16'U). Furthermore, the second joining warp yarn 1Bs passes under the lower side of the lower weft yarn 11'L to form a yarn knot, and then passes over the lower weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 13'L, 15'L).

[0148] Thus, the first knotting warp yarn 1Bf and the second knotting warp yarn 1Bs complement each other to complete the surface structure of the upper fabric, thereby being woven into the upper fabric one yarn at a time without altering the surface structure. Furthermore, the first knotting warp yarn 1Bf and the second knotting warp yarn 1Bs complement each other to complete the back structure of the lower fabric, thereby forming yarn knots at regular intervals on the lower fabric without altering the back structure.

[0149] Figure 12 (b) shows the way the lower side warp yarn 2L is woven into the lower side weft yarn. The lower side warp yarn 2L passes under the lower side weft yarns (1'L, 11'L) to form back side yarn knots, and passes over the four lower side weft yarns (3'L, 5'L, 7'L, 9'L) and two lower side weft yarns (13'L, 15'L) between each back side yarn knot.

[0150] The lower side warp yarns (4L, 6L, 8L) have the same weaving pattern as the lower side warp yarn 2L, forming two back side yarn knots. Between these back side yarn knots, four lower side weft yarns and two lower side weft yarns pass over the top. Thus, the lower side warp yarns (2L, 4L, 6L, 8L) are woven only into the lower side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) to form part of the lower side fabric.

[0151] Figure 12 (c) shows the way the upper warp yarn 3U and the lower warp yarn 3L are incorporated into the upper and lower weft yarns. Figure 12 As shown in (c), the upper side warp yarn 3U is woven into the upper side weft yarn (1'U~16'U) one by one, and passes over the upper side of the upper side weft yarn (2'U, 4'U, 6'U, 8'U, 10'U, 12'U, 14'U, 16'U) to form surface side yarn knots respectively, and passes under the upper side of the upper side weft yarn (1'U, 3'U, 5'U, 7'U, 9'U, 11'U, 13'U, 15'U).

[0152] The other top-side warp yarns 7U also have the same weaving pattern as the top-side warp yarns 3U, and are woven into the top-side weft yarns (1'U to 16'U) one by one, without changing the surface structure. The top-side warp yarns (3U, 7U) are only woven into the top-side weft yarns (1'U to 16'U) and constitute part of the top-side fabric.

[0153] The lower warp yarn 3L passes under the lower weft yarns (1'L, 7'L) to form back side yarn knots, and passes over the upper side of 2 lower weft yarns (3'L, 5'L) and 4 lower weft yarns (9'L, 11'L, 13'L, 15'L) between each back side yarn knot.

[0154] The other bottom-side warp yarns 7L also have the same weaving pattern as the bottom-side warp yarns 3L, each forming two back-side yarn knots. They are woven in between the back-side yarn knots, passing over the top of two and four bottom-side weft yarns. Thus, the bottom-side warp yarns (3L, 7L) are woven only into the bottom-side weft yarns (1'L, 3'L, 5'L, 7'L, 9'L, 11'L, 13'L, 15'L) to form part of the bottom-side fabric.

[0155] Figure 12 (d) shows the way the upper side warp 5U and the third knot warp 5Bt are incorporated into the upper side weft and the lower side weft. The upper side warp 5U and the third knot warp 5Bt are arranged in pairs, one above the other, and cross each other based on the knot of the third knot warp 5Bt.

[0156] The upper side warp yarn 5U passes over the upper side weft yarns (1'U, 3'U, 5'U, 7'U, 11'U, 13'U, 15'U) to form surface side yarn knots, and passes under the upper side weft yarns (2'U, 4'U, 6'U, 8'U~10'U, 12'U, 14'U, 16'U).

[0157] The third knot warp yarn 5Bt passes under the lower side weft yarns (3'L, 13'L) to form a yarn knot, and forms a yarn knot N3 passing over the upper side weft yarn 9'U. The third knot warp yarn 5Bt passes over two lower side weft yarns (1'L, 15'L) and four lower side weft yarns (5'L, 7'L, 9'L, 11'L) between the back side yarn knots of the lower side weft yarns (3'L, 13'L). The third knot warp yarn 5Bt is woven into the lower side fabric with the same weaving pattern as the lower side warp yarns (2L~4L, 6L~8L), and is woven into the lower side fabric without changing the back side structure.

[0158] The third joining warp yarn 5Bt passes under the upper side weft yarns (1'U~8'U, 10'U~16'L) for the upper side fabric, and passes over the upper side weft yarn 9'U for joining, forming only one yarn knot N3 on the surface side.

[0159] At the position where the third warp yarn 5Bt forms a yarn knot N3 on the surface side, the upper warp yarn 5U passes under the upper weft yarn 9'U and does not form a yarn knot on the surface side. The upper warp yarn 5U functions as an upper change yarn 5U that changes part of the upper surface structure.

[0160] The upper warp yarn 5U and the third knot warp yarn 5Bt complement each other to complete the surface structure of the upper fabric, thereby forming yarn knots at regular intervals on the surface structure of the upper fabric. This, in turn, suppresses the reduction in surface quality of the upper fabric through the third knot warp yarn 5Bt. Furthermore, by knotting only the upper-side change yarn 5U and the third knot warp yarn 5Bt woven into the upper weft yarn, the reduction in surface quality can be suppressed compared to the case where knot warps are arranged vertically.

[0161] In the complete weave, the first and second connecting warp yarns 1Bf and the third connecting warp yarn 5Bt and the upper side alteration yarn 5U complement each other, forming the same surface structure for the upper side weft yarns (1'U to 16'U). The first connecting warp yarns 1Bf and the second connecting warp yarns 1Bs complement each other, and the third connecting warp yarn 5Bt and the upper side alteration yarn 5U complement each other. The first connecting warp yarns 1Bf and the second connecting warp yarns 1Bs form a surface structure on the surface side that skips one upper side weft yarn to form a yarn knot for the upper side weft yarns (1'U to 16'U). The third connecting warp yarn 5Bt and the upper side alteration yarn 5U also form a surface structure on the surface side that skips one upper side weft yarn to form a yarn knot for the upper side weft yarns (1'U to 16'U). Thus, the group forming the first knot warp 1Bf and the second knot warp 1Bs shares the surface structure on the surface side with the group forming the third knot warp 5Bt and the upper side alteration yarn 5U, thereby suppressing the reduction in surface properties of the upper side fabric caused by the knot.

[0162] The group of the first connecting warp 1Bf and the second connecting warp 1Bs is not adjacent to the group of the third connecting warp 5Bt and the upper side changing warp 5U. The total number of warp yarns constituting the complete weave is a multiple of 4. In the complete weave, the number of warp yarns that combine the first connecting warp 1Bf, the second connecting warp 1Bs, and the third connecting warp 5Bt is less than half the total number of warp yarns.

[0163] [Seventh Implementation Method]

[0164] Figure 13 This is a design drawing illustrating the complete weave of the industrial fabric 70 according to the seventh embodiment. Figure 9 Compared to the industrial fabric 50 shown, in the industrial fabric 70 of the seventh embodiment, the number of yarn knots formed by the third knot warp 3Bt on the surface side of the fabric is greater, and the third knot warp 3Bt forms two yarn knots on the surface side.

[0165] [Eighth Implementation Method]

[0166] Figure 14 This is a design drawing illustrating the complete weave of the industrial fabric 80 according to the eighth embodiment. Figure 9 The difference between the industrial fabric 50 shown and the industrial fabric 80 in the eighth embodiment is that the number of weft yarns on the upper side constituting the complete weave is smaller, and the arrangement of the warp yarns on the lower side is different. In the industrial fabric 80, there are 12 weft yarns on the upper side, and the weft yarns on the lower side are arranged in a manner that skips one and then arranges two consecutively. The ratio of upper side weft yarns to lower side weft yarns is 3:2, which can suppress the curling of the width direction (weft direction) end of the industrial fabric 80 and improve abrasion resistance.

[0167] [Ninth Implementation Method]

[0168] Figure 15 This is a design drawing illustrating the complete weave of the industrial fabric 90 according to the ninth embodiment. Figure 9 The difference between the industrial fabric 50 shown and the industrial fabric 90 of the ninth embodiment is that the industrial fabric 90 has a higher number of warp yarns and a higher number of weft yarns forming the complete weave. In the industrial fabric 90 of the ninth embodiment, there are 16 rows of warp yarns and 32 weft yarns on the upper side. The higher number of weft yarns disperses the bonding portion, thereby suppressing the formation of marks and improving the smoothness of the surface and the uniformity of dehydration.

[0169] [Tenth Implementation Method]

[0170] Figure 16 This is a design drawing illustrating the complete weave of the industrial fabric 100 according to the tenth embodiment. Figure 15 Compared to the industrial fabric 90 shown, in the industrial fabric 100 of the tenth embodiment, the number of yarn knots formed by the third knot warp yarns (3Bt, 7Bt, 11Bt, 15Bt) on the surface side of the fabric is greater, and the third knot warp yarns each form two yarn knots on the surface side.

[0171] [Eleventh Implementation Method]

[0172] Figure 17 This is a design drawing illustrating the complete weave of the industrial fabric 110 according to the eleventh embodiment. (And...) Figure 14 The difference between the industrial fabric 80 shown and the industrial fabric 110 of the eleventh embodiment is that the industrial fabric 110 has a larger number of warp yarns and a larger number of upper-side weft yarns constituting a complete weave. In the industrial fabric 110 of the eleventh embodiment, there are 16 rows of warp yarns and 24 upper-side weft yarns.

[0173] [Twelfth Implementation Method]

[0174] Figure 18 This is a design drawing illustrating the complete weave of the industrial fabric 120 according to the twelfth embodiment. Figure 17 Compared to the industrial fabric 110 shown, in the industrial fabric 120 of the twelfth embodiment, the number of yarn knots formed by the third knot warp yarns (3Bt, 7Bt, 11Bt, 15Bt) on the surface side of the fabric is greater, and the third knot warp yarns each form two yarn knots on the surface side.

[0175] [Thirteenth Implementation Method]

[0176] Figure 19 This is a design drawing illustrating the complete weave of the industrial fabric 130 according to the thirteenth embodiment. Figure 5The difference between the industrial fabric 30 shown and the industrial fabric 130 in the thirteenth embodiment is that the group of the first and second bonding warp yarns is not adjacent to the group of the third bonding yarn and the upper side changing yarn. As a result, the bonding portion can be dispersed, thus suppressing the generation of marks.

[0177] In industrial fabric 130, the group of first and second knotted warp yarns, along with the group of third knotted yarn and upper-side alteration yarn, each form a yarn knot passing over the upper side of two consecutive upper-side weft yarns, creating the same weaving pattern. However, the upper-side warp yarns have a weaving pattern where each yarn is woven into the upper-side weft yarn one by one; therefore, the weaving pattern of the group of first and second knotted warp yarns differs from that of the group of third knotted yarn and upper-side alteration yarn.

[0178] [Fourteenth Implementation]

[0179] Figure 20 This is a design drawing illustrating the complete weave of the industrial fabric 140 according to the fourteenth embodiment. Figure 15 The difference between the industrial fabric 90 shown and the industrial fabric 140 of the fourteenth embodiment is that, in the industrial fabric 140, the first and second knotting warp yarns are arranged as a pair, sandwiching the lower side warp yarns. The industrial fabric 140 includes sets of upper and lower side warp yarns that are not knotting warp yarns. Since the first and second knotting warp yarns are arranged as a pair, sandwiching the lower side warp yarns, when only the upper side fabric is observed, the sets of first and second knotting warp yarns are adjacent.

[0180] [Fifteenth Implementation]

[0181] Figure 21 This is a design drawing illustrating the complete weave of the industrial fabric 150 according to the fifteenth embodiment. Figure 15 The difference between the industrial fabric 90 shown and the industrial fabric 150 of the fifteenth embodiment is that, in the industrial fabric 150, the first and second knotting warp yarns are arranged in pairs sandwiching the lower side warp yarns, and the upper side alteration yarn and the third knotting warp yarn are arranged in pairs sandwiching the lower side warp yarns. When only the upper side fabric is observed, the sets of the first and second knotting warp yarns are adjacent, and the sets of the upper side alteration yarn and the third knotting warp yarn are adjacent.

[0182] The industrial fabrics of the above embodiments may also be processed in the following ways. For example, in order to improve the smoothness of the surface, a grinding process can be applied to reduce the surface thickness of the industrial fabric to within the range of 0.02 to 0.05 mm. In particular, the surface thickness can be ground to 0.02 mm or 0.03 mm.

[0183] In addition, to prevent the yarn from unraveling at the ends of the mesh (industrial fabric), polyurethane resin can be applied to a region 5mm to 30mm from the ends of the mesh (especially to 5mm, 10mm, and 20mm) for reinforcement. The coating can be applied to one side or both sides. The resin can be a polyurethane hot melt adhesive.

[0184] To improve the abrasion resistance of the mesh ends, resin strips with a width of approximately 7 mm, ranging from 3 to 16 strips (especially 3, 4, 7, 8, 10, 12, 15, and 16 strips), can be applied along the entire length of the mesh, covering a range from 20 mm to 500 mm from the ends (especially the ranges of 25, 50, 75, 100, 150, 250, 300, 350, and 400 mm). These multiple polyurethane resin strips can be applied to both ends of the mesh or only to one end. The resin can be a polyurethane hot melt adhesive.

[0185] In addition, to improve stain resistance, the entire wire mesh can be coated with resin. Furthermore, for trimming the paper near the ends of the wire mesh, a strip of resin with a width of approximately 3, 5, 7, 10, 15, or 20 mm can be applied along the entire length of the mesh, from 10 mm to 500 mm from the ends (especially 10, 15, 20, 25, 30, 40, 50, 75, 100, 150, 200, 250, 300, 350, and 400 mm). The resin can be applied to both ends of the wire mesh or only to one end. The resin can be polyurethane or hot melt adhesive. Additionally, lines approximately 25 mm or 50 mm wide can be drawn along the entire width of the wire mesh to indicate the bending of the mesh in use.

[0186] The preferred ranges for the elements of the industrial fabrics are listed below. The warp yarns (including the top side warp, bottom side warp, first knot warp, second knot warp, and third knot warp) preferably have a diameter of 0.10–1.0 mm, more preferably 0.1–0.5 mm, and particularly preferably 0.11–0.35 mm. Furthermore, the weft yarns preferably have a diameter of 0.10–1.0 mm, more preferably 0.12–0.6 mm, and particularly preferably 0.12–0.55 mm.

[0187] The top weft yarn can be composed solely of PET yarn, solely of polyamide yarn, or an alternation of PET and polyamide yarns, or it can be composed of two consecutive PET yarns alternating with two consecutive polyamide yarns. The bottom weft yarn can also be composed solely of PET yarn, solely of polyamide yarn, or an alternation of PET and polyamide yarns, or it can be composed of two consecutive PET yarns alternating with two consecutive polyamide yarns. The ratio of PET yarns to polyamide yarns can be 1:2 or 1:3. Furthermore, to reduce the mechanical drive load, low-friction yarns can be woven into the bottom weft yarn.

[0188] The ratio of the number of weft yarns on the top side to the number of weft yarns on the bottom side can be 1:1, 2:1, 3:1, 4:1, 3:2, 4:3, 5:2, 5:3, or 5:4. The air permeability is preferably 100 cm³ / cm² / s to 600 cm³ / cm² / s, more preferably 120 cm³ / cm² / s to 300 cm³ / cm² / s.

[0189] The wire thickness is preferably 0.3mm to 3.0mm, more preferably 0.5mm to 2.5mm, and particularly preferably 0.5mm to 1.0mm. It is primarily used as a conveyor belt for papermaking and nonwoven fabric production, especially as a dewatering conveyor belt for papermaking and a conveyor belt for transporting spunbond nonwoven fabric.

[0190] The cross-sectional shapes of the warp and weft yarns in the above embodiments are not limited to circles; yarns with square shapes, star shapes, elliptical shapes, hollow shapes, core-sheath structures, etc., can be used. In particular, by making the cross-sectional shape of the lower warp yarn square, rectangular, or elliptical, the cross-sectional area of ​​the yarn can be increased, thereby improving tensile strength and rigidity.

[0191] Furthermore, the material used for the yarn can be freely selected within the range of desired properties, and can include polyethylene terephthalate (PET), polyester, polyamide, polyphenylene sulfide, polyvinylidene fluoride, polypropylene, aramid, polyetheretherketone, polyethylene naphthalate, polytetrafluoroethylene, cotton, wool, metals, thermoplastic polyurethane, thermoplastic elastomers, etc. Of course, yarns made from copolymers, blends of these materials, or containing various substances can also be used, depending on the purpose. For yarns used to construct industrial fabrics, polyester monofilaments with excellent rigidity and dimensional stability are generally preferred.

[0192] The preferred warp yarn count is 4, 8, 12, 16, 20, 24, 28, 32, or 36. Similarly, the preferred weft yarn count is 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, or 48.

[0193] Those skilled in the art will understand that each embodiment is merely an example, and various combinations of components can produce a wide range of variations, all of which fall within the scope of this invention.

[0194] (Industry availability)

[0195] This invention relates to industrial fabrics used in papermaking machines.

[0196] (Explanation of reference numerals in the attached diagram)

[0197] 1'L: Bottom side weft yarn; 1'U: Top side weft yarn; 1L: Bottom side warp yarn;

[0198] 1U, 3U; upper side warp yarn; 3Bt: third knot warp yarn; 4Bf: first knot warp yarn;

[0199] 4Bs: Second knot warp; 10: Industrial fabric.

Claims

1. An industrial fabric which is joined with an upper side fabric and a lower side fabric, characterized by, Possessing: an upper side weft yarn constituting a part of the upper side fabric; a lower side weft yarn constituting a part of the lower side fabric; an upper side warp yarn constituting a part of the upper side fabric only woven into the upper side weft yarn; a lower side warp yarn constituting a part of the lower side fabric only woven into the lower side weft yarn; and a binding warp yarn binding the upper side fabric and the lower side fabric, the binding warp yarn has: a first binding warp yarn and a second binding warp yarn arranged in an upper and lower group; and a third binding warp yarn forming a yarn loop passing through an upper side of the upper side weft yarn, the upper side warp yarn includes an upper side change yarn arranged in an upper and lower group with the third binding warp yarn, at a position where the third binding warp yarn forms a yarn loop on the upper side weft yarn, the upper side change yarn changes a part of the upper side surface weave by passing through a lower side of the upper side weft yarn, in a complete weave, the group of the first binding warp yarn and the second binding warp yarn complement each other, and the group of the third binding warp yarn and the upper side change yarn complement each other, so that the group of the first binding warp yarn and the second binding warp yarn and the group of the third binding warp yarn and the upper side change yarn form the same weave pattern on the upper side weft yarn, wherein the warp yarn is a yarn extending in a conveyance direction of the web along the papermaking multilayer fabric when the papermaking multilayer fabric is used as a loop-shaped conveyor belt.

2. The industrial fabric according to claim 1, wherein the number of the warp yarn constituting the complete weave is a multiple of 4.

3. The industrial fabric according to claim 1, wherein the group of the first binding warp yarn and the second binding warp yarn is adjacent to the group of the third binding warp yarn and the upper side change yarn.

4. The industrial fabric according to claim 1, wherein the group of the first binding warp yarn and the second binding warp yarn is not adjacent to the group of the third binding warp yarn and the upper side change yarn.

5. The industrial fabric according to claim 1, wherein in the complete weave, the number of the first binding warp yarn, the second binding warp yarn, and the third binding warp yarn is less than half of the number of all the warp yarns.

6. The industrial fabric according to claim 1, wherein in the complete weave, the number of the first binding warp yarn, the second binding warp yarn, and the third binding warp yarn is more than half of the number of all the warp yarns.

7. The industrial fabric according to claim 1, wherein the number of the yarn loops formed by the third binding warp yarn passing through the upper side of the upper side weft yarn is less than the number of the yarn loops formed by the first binding warp yarn or the second binding warp yarn passing through the upper side of the upper side weft yarn.

8. The industrial fabric according to any one of claims 1 to 7, wherein In the fully organized fabric, the sets of first and second binding warp yarns complement each other, and the sets of third binding warp yarns and overface side change yarns complement each other, such that the sets of first and second binding warp yarns and the sets of third binding warp yarns and overface side change yarns form the same weave pattern with the underface side weft yarns.

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