Industrial Textiles

Abstract

According to an exemplary aspect of the present invention, an industrial textile is provided, comprising a double warp. The yarns (111, 112) of the first warp and the yarns (131, 132, 133, 134) of the weft are combined with each other according to a first predetermined pattern, and the yarns (121, 122) of the second warp and the yarns (131, 132, 133, 134) of the weft are combined with each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure, the textile structure comprising the yarns (131, 132) of the weft on a first horizontal plane (L1) and the yarns (133, 134) of the weft on a second horizontal plane (L2). On the first horizontal plane (L1), the yarns with a smaller diameter of the weft are arranged to alternate with the yarns with a larger diameter of the weft.

Description

Technical Field

[0001] The present invention relates to industrial textiles, in particular industrial textiles used as conveying fabrics, drying fabrics or filtering fabrics. Background Art

[0002] A conveyor fabric can be used to transport paper mass, paper web or paperboard web to a pulper or to transport cake to a cellulose dryer. The conveyor fabric has a first surface and a second surface. When the conveyor fabric is assembled to a conveyor, the first surface contacts the paper mass or cake. When the conveyor fabric is assembled to a conveyor, the second surface contacts the conveyor equipment. The first side should have a rough surface texture to provide high friction and grip so as to also carry the paper mass or cake upward. The second side should have a relatively smooth surface to provide good wear resistance and performance. When additional grip is required, the conveyor fabric can be equipped with silicon stripes. The silicon stripes are formed in the machine cross direction of the conveyor fabric.

[0003] However, the processing of the silicon strips is very time consuming. First, it will take hours of labor to make the silicon strips. Second, the silicon strips need to take several hours to dry. In addition, when the fabric is drying, it will take up a lot of floor space for several hours.

[0004] Patent document EP3601665B1 discloses an industrial textile having a granular texture on a first surface. However, the industrial textile has a substantially uniform surface topography with relatively small waviness. The industrial textile has a relatively high contact surface area. Therefore, materials such as dust on the first surface do not easily adhere to the surface.

[0005] Therefore, there is a need to improve industrial textiles, especially to develop alternatives to silicone strips. Summary of the invention

[0006] According to a first aspect of the present invention, an industrial textile is provided, which has a machine direction and a cross-machine direction, and a first surface and a second surface, the industrial textile comprising a double warp, the double warp comprising a first warp and a second warp, the first warp comprising a first machine direction yarn, the second warp comprising a second machine direction yarn, the yarns of the first warp being arranged above the yarns of the second warp, the weft comprising a cross-machine direction yarn, the yarns of the first warp and the yarns of the weft being combined with each other according to a first predetermined pattern, the yarns of the second warp and the yarns of the weft being combined with each other according to a second predetermined pattern, and the first predetermined pattern and the second predetermined pattern forming a textile structure, the textile structure comprising the yarns of the weft on a first level (first level) and the yarns of the weft on a second level (second level) along the thickness direction of the industrial textile, wherein, on the first level, the yarns of the weft having a smaller diameter are configured to alternate with the yarns of the weft having a larger diameter.

[0007] According to one embodiment, every second, third, or fourth yarn of the weft yarns on the first horizontal plane has a larger diameter than the other yarns of the weft yarns on the first horizontal plane.

[0008] According to one embodiment, in the second horizontal plane, the weft yarns having a smaller diameter are arranged to alternate with the weft yarns having a larger diameter.

[0009] According to one embodiment, the industrial textile has a yarn with a larger diameter and a yarn with a smaller diameter of the weft yarn in a repeating pattern on a first horizontal plane, and has a yarn with a larger diameter and a yarn with a smaller diameter of the weft yarn in a repeating pattern on a second horizontal plane, has a yarn with a smaller diameter and a yarn with a larger diameter of the weft yarn in a repeating pattern on a second horizontal plane, or each yarn of the weft yarn on the second horizontal plane has the same diameter, which is smaller than the diameter of the larger (diameter) yarn of the weft yarn on the first horizontal plane.

[0010] According to one embodiment, the industrial textile has one yarn with a larger diameter and two yarns with a smaller diameter of the weft in a repeating pattern on a first horizontal plane, and has one yarn with a smaller diameter of the weft, one yarn with a larger diameter of the weft and one yarn with a smaller diameter of the weft in a repeating pattern on a second horizontal plane, or has one yarn with a larger diameter of the weft and two yarns with a smaller diameter of the weft in a repeating pattern on the second horizontal plane.

[0011] According to one embodiment, the industrial textile has one weft yarn with a larger diameter and three weft yarns with a smaller diameter in a repeating pattern on a first horizontal plane, and has one weft yarn with a smaller diameter, two weft yarns with a larger diameter, and one weft yarn with a smaller diameter in a repeating pattern on a second horizontal plane.

[0012] According to one embodiment, the industrial textile has one weft yarn with a larger diameter and one weft yarn with a smaller diameter in a repeating pattern on a first horizontal plane, and has one weft yarn with a smaller diameter, one weft yarn with a larger diameter, and two weft yarns with a smaller diameter in a repeating pattern on a second horizontal plane.

[0013] According to one embodiment, the diameter of the larger diameter yarn of the weft yarn is 0.2 mm larger than the diameter of the smaller diameter yarn of the weft yarn.

[0014] According to one embodiment, in the first predetermined pattern, the yarns of the first warp yarns are arranged to bind (bind, tie, weave) the yarns of the weft yarns below two yarns and above two yarns of the weft yarns.

[0015] According to one embodiment, in the second predetermined pattern, the yarns of the second warp yarn are arranged to bind the yarns of the weft yarn below three yarns and above one yarn of the weft yarn.

[0016] According to one embodiment, mutually adjacent yarns of the first warp yarns are arranged in such a way that when a coincidentally selected warp yarn is below a weft yarn, a warp yarn next to the coincidentally selected warp yarn is above the weft yarn.

[0017] According to one embodiment, mutually adjacent yarns of the second warp yarns are arranged in such a way that when a warp yarn which happens to be selected is below a weft yarn, a warp yarn which happens to be selected is above the weft yarn.

[0018] According to one embodiment, the yarn of the first warp yarn that happens to be selected and the yarn of the second warp yarn are arranged in such a way that when the yarn of the first warp yarn is combined with the yarn of the weft yarn below two (yarns of the weft yarn), the yarn of the second warp yarn is combined with the yarn of the weft yarn below two (yarns of the weft yarn), and the yarn of the first warp yarn adjacent to the yarn of the first warp yarn that happens to be selected and the yarn of the second warp yarn adjacent to the yarn of the second warp yarn that happens to be selected are arranged in such a way that when the yarn of the first warp yarn is combined with the yarn of the weft yarn above two (yarns of the weft yarn), the yarn of the second warp yarn is combined with the yarn of the weft yarn above one (yarn of the weft yarn) and below one (yarn of the weft yarn).

[0019] According to one embodiment, the industrial textile has a contact area of ​​less than 20%.

[0020] According to one embodiment, the contact area is measured by a method comprising: providing a sample of industrial textile having a length of 130 mm in the machine direction and a width of 20 mm in the cross-machine direction; polishing the paper-side of the sample by removing 0.12 mm in the thickness direction of the sample; photographing the sample by a microscope camera; calibrating the magnification by a calibration ruler; imaging the calibration ruler and the polished surface of the sample at the calibrated magnification; and measuring the percentage of the contact area by image processing software.

[0021] According to one embodiment, an industrial textile includes a first edge and a second edge configured to be connected together by a seam element including a first portion connected to the first edge and a second portion connected to the second edge.

[0022] According to one embodiment, the inner surface of the first portion and the inner surface of the second portion of the seaming element are shaped to correspond to the surface texture of the industrial textile.

[0023] According to one embodiment, the inner surface of the first portion and the inner surface of the second portion of the seaming element comprise teeth configured to be attached to an industrial textile.

[0024] According to a second aspect of the present invention, there is provided the use of an industrial textile as a transport fabric, a drying fabric or a filter fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A shows a cross-section in the machine direction of an industrial textile according to at least some embodiments of the present invention;

[0026] Figure 1B shows a cross-section in the machine direction of a weft yarn and a first warp yarn according to at least some embodiments of the present invention;

[0027] Figure 1C shows a cross-section in the machine direction of a weft yarn and a second warp yarn according to at least some embodiments of the present invention;

[0028] Figure 1D shows a cross-section in the machine direction of a weft yarn and a first warp yarn according to at least some embodiments of the present invention;

[0029] Figure 1Eshows a cross-section in the machine direction of a weft yarn and a second warp yarn according to at least some embodiments of the present invention;

[0030] Figure 2A shows a cross-section in the machine direction of an industrial textile according to at least some embodiments of the present invention;

[0031] Figure 2B shows a cross-section in the machine direction of a weft yarn and a first warp yarn according to at least some embodiments of the present invention;

[0032] Figure 2C shows a cross-section in the machine direction of a weft yarn and a second warp yarn according to at least some embodiments of the present invention;

[0033] Figure 2D shows a cross-section in the machine direction of a weft yarn and a first warp yarn according to at least some embodiments of the present invention;

[0034] Figure 2E shows a cross-section in the machine direction of a weft yarn and a second warp yarn according to at least some embodiments of the present invention;

[0035] Figure 3A showing that every second yarn of the weft yarns on the first horizontal plane has a larger diameter than other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0036] Figure 3B showing that every second yarn of the weft yarns on the first horizontal plane has a larger diameter than other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0037] Figure 3C showing that every second yarn of the weft yarns on the first horizontal plane has a larger diameter than other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0038] Figure 3D showing that every third yarn of the weft yarns on the first horizontal plane has a larger diameter than the other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0039] Figure 3E showing that every third yarn of the weft yarns on the first horizontal plane has a larger diameter than the other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0040] Figure 3F showing that every fourth yarn of the weft yarns on the first horizontal plane has a larger diameter than the other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0041] Figure 3G showing that every second yarn of the weft yarns on the first horizontal plane has a larger diameter than other yarns of the weft yarns on the first horizontal plane according to at least some embodiments of the present invention;

[0042] Figure 4 shows a surface view of an industrial textile according to at least some embodiments of the present invention;

[0043] Figure 5 shows a weaving pattern of an industrial textile according to at least some embodiments of the present invention;

[0044] Figure 6 illustrates contact areas of industrial textiles according to at least some embodiments of the present invention; and

[0045] Figure 7 Seaming elements in accordance with at least some embodiments of the present invention are shown.

[0046] The reference numerals are listed as follows:

[0047] 100 Industrial Textiles

[0048] 101 First Surface

[0049] 102 Second Surface

[0050] 103 First Edge

[0051] 104 The Second Edge

[0052] 111, 112 First warp yarn

[0053] 121, 122 Second warp yarn

[0054] 131, 132, 133, 134 Weft yarn

[0055] 140 Seam elements

[0056] 141 First part of the seam element

[0057] 142 Second part of the seam element

[0058] L1 First horizontal plane

[0059] L2 Second horizontal plane DETAILED DESCRIPTION

[0060] As used herein, the term "first side" refers to the side of the industrial textile that is in contact with the ball or cake when the industrial textile is assembled to the conveyor.

[0061] As used herein, the term "second side" refers to the side of the industrial textile that is in contact with the conveyor equipment when the industrial textile is assembled to the conveyor.

[0062] As used herein, the term "layer" refers to a generally horizontal plane in relation to the thickness direction of the industrial textile. The industrial textile has a thickness in dimension, the thickness extending perpendicularly from the second side of the industrial textile to the first side. When the industrial textile is assembled on a conveyor, the first layer of the industrial textile may be higher than the second layer of the industrial textile in the thickness direction of the industrial textile.

[0063] As used herein, the term "machine direction" refers to the direction of movement or first direction of an industrial textile in a paper, board or tissue machine when the textile is assembled into the paper, board or tissue machine.

[0064] As used herein, the term "cross-machine direction" refers to the direction perpendicular to the moving or first direction of the industrial textile in a paper, board or tissue machine when the fabric is assembled into the paper, board or tissue machine.

[0065] When additional gripping force is required, the conveyor fabric can be equipped with silicon strips. Silicon strip processing is very time consuming and labor intensive. At least some embodiments of the present invention solve the above problems.

[0066] According to one embodiment, an industrial textile 100 has a machine direction (MD) and a cross-machine direction (CMD), and a first surface 101 and a second surface 102. The industrial textile includes a double warp yarn, which includes a first warp yarn and a second warp yarn, the first warp yarn including first machine direction yarns 111, 112, and the second warp yarn including second machine direction yarns 121, 122. The yarns 111, 112 of the first warp yarn are arranged above the yarns 121, 122 of the second warp yarn. The industrial textile also includes weft yarns, which include cross-machine direction yarns 131, 132, 133, 134. The double warp yarn includes overlapping warp yarns, making the textile strong and wear-resistant. The yarns 111, 112 of the first warp yarn and the yarns 131, 132, 133, 134 of the weft yarn are combined with each other according to a first predetermined pattern. The yarns 121, 122 of the second warp and the yarns 131, 132, 133, 134 of the weft are combined with each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure, which includes machine cross-direction yarns on a first horizontal plane and machine cross-direction yarns on a second horizontal plane in the thickness direction of the industrial textile 100. The weft yarns with smaller diameters are configured to alternate with the weft yarns with larger diameters on the first plane. This enables a rough texture structure to be achieved on the first side of the industrial textile. Higher peaks and lower valleys are formed in the industrial textile along the thickness direction of the industrial textile. The rough structure provides greater friction and gripping force to transport paper balls or cakes. Due to the rough structure, paper balls or cakes can also be transported upwards. In addition, time-consuming silicon strip processing can be avoided.

[0067] Industrial textile 100 includes first edge 103 and second edge 104. First edge 103 and second edge 104 may be connected together to form a loop.

[0068] According to one embodiment, in the first predetermined pattern, the yarns 111 , 112 of the first warp yarns are configured to join the yarns 131 , 132 , 133 , 134 of the weft yarns below two yarns 131 , 132 and above two yarns 133 , 134 of the weft yarns.

[0069] According to one embodiment, in the second predetermined pattern, the yarns 121 , 122 of the second warp yarns are configured to bind the yarns 131 , 132 , 133 , 134 of the weft yarns below three yarns 131 , 132 , 134 and above one yarn 133 of the weft yarns.

[0070] Figure 1AA cross-section of an industrial textile 100 in the machine direction is shown according to at least some embodiments. The industrial textile 100 includes first warp yarns 111, 112, second warp yarns 121, 122, and weft yarns 131, 132, 133, 134. The first warp yarns 111, 112 are arranged above the second warp yarns 121, 122. The first warp yarns 111 and the second warp yarns 121 are configured to form a first row of the industrial textile 100, and the first warp yarns 112 and the second warp yarns 122 are configured to form a second row of the industrial textile 100.

[0071] Figure 1B A cross-section of weft yarns 131, 132, 133, 134 and first warp yarns 112 in the machine direction is shown according to at least some embodiments. Yarn 112 of the first warp yarn forming the second row of industrial textile 100 is configured to join weft yarns 131, 132, 133, 134 below two weft yarns 131, 132 and above two yarns 133, 134.

[0072] Figure 1C A cross-section of weft yarns 131, 132, 133, 134 and second warp yarns 122 in the machine direction is shown according to at least some embodiments. Yarn 122 of the second warp yarn forming the second row of industrial textile 100 is configured to join weft yarns 131, 132, 133 below three weft yarns 131, 132, 133 and above one yarn 134.

[0073] Figure 1D A cross-section of a weft yarn and a first warp yarn in the machine direction is shown according to at least some embodiments. Yarn 111 of a first warp yarn forming a first row of industrial textile 100 is configured to join yarns 131, 132, 133, 134 of the weft yarn above two yarns 131, 132 and below two yarns 133, 134 of the weft yarn.

[0074] Figure 1E A cross section of a weft yarn and a second warp yarn in the machine direction is shown according to at least some embodiments. Yarn 121 of the second warp yarn forming a first row of industrial textile 100 is configured to join yarns 131, 132, 133, 134 of the weft yarn above one yarn and below three yarns of the weft yarn.

[0075] Figure 2AA cross section of an industrial textile in the machine direction is shown. The industrial textile 100 includes yarns 111, 112 of a first warp, yarns 121, 122 of a second warp, and yarns 131, 132, 133, 134 of weft. The yarns 111, 112 of the first warp are arranged above the yarns 121, 122 of the second warp. The yarns 111 of the first warp and the yarns 121 of the second warp are configured to form a first row of the industrial textile 100, and the yarns 112 of the first warp and the yarns 122 of the second warp are configured to form a second row of the industrial textile 100.

[0076] Figure 2B A cross-section of weft yarns 131, 132, 133, 134 and first warp yarns 112 in the machine direction is shown according to at least some embodiments. Yarns 112 of the first warp yarns forming the second row of industrial textile 100 are configured to join weft yarns 131, 132, 133, 134 above two weft yarns 131, 132 and below two yarns 133, 134.

[0077] Figure 2C A cross-section of weft yarns 131, 132, 133, 134 and second warp yarns 122 in the machine direction is shown according to at least some embodiments. Second warp yarns 122 forming a second row of industrial textile 100 are configured to join weft yarns 131, 132, 133, 134 above one weft yarn 131 and below three weft yarns 132, 133, 134.

[0078] Figure 2D A cross-section of weft yarns 131, 132, 133, 134 and first warp yarns in the machine direction is shown according to at least some embodiments. Yarn 111 of a first warp yarn forming a first row of industrial textile 100 is configured to join weft yarns 131, 132, 133, 134 below two weft yarns 131, 132 and above two weft yarns 133, 134.

[0079] Figure 2E A cross-section of weft yarns 131, 132, 133, 134 and second warp yarn 121 in the machine direction is shown according to at least some embodiments. Yarn 121 of the second warp yarn forming a first row of industrial textile 100 is configured to join weft yarns 131, 132, 133, 134 below three weft yarns and above one weft yarn.

[0080] The industrial textile may comprise yarns with two to four different diameters of weft yarns. Preferably, yarns with two different diameters of weft yarns.

[0081] According to one embodiment, every second, third or fourth yarn of the weft yarns on the first horizontal plane L1 has a larger diameter than the other yarns of the weft yarns on the first horizontal plane L1. This enables a rough structure on the first side of the industrial textile.

[0082] According to one embodiment, weft yarns of smaller diameter are arranged to alternate with weft yarns of larger diameter on the second horizontal plane L2.

[0083] According to one embodiment, the industrial textile 100 has one yarn with a larger diameter of the weft yarn and one yarn with a smaller diameter of the weft yarn in a repeating pattern on a first horizontal plane. In addition, the industrial textile 100 has one yarn with a larger diameter of the weft yarn and one yarn with a smaller diameter of the weft yarn in a repeating pattern on a second horizontal plane, one yarn with a smaller diameter of the weft yarn and one yarn with a larger diameter of the weft yarn in a repeating pattern on a second horizontal plane, or each yarn of the weft yarn on the second horizontal plane has the same diameter, which is smaller than the diameter of the larger yarn of the weft yarn on the first horizontal plane. This enables a rough structure on the first side of the industrial textile and a relatively smooth structure on the second side.

[0084] According to one embodiment, the industrial textile 100 has one yarn with a larger diameter and two yarns with a smaller diameter in a repeating pattern on a first horizontal plane. In addition, the industrial textile has one yarn with a smaller diameter, one yarn with a larger diameter and one yarn with a smaller diameter in a repeating pattern on a second horizontal plane, or one yarn with a larger diameter and two yarns with a smaller diameter in a repeating pattern on a second horizontal plane. This enables a rough structure on a first side of the industrial textile and a relatively smooth structure on a second side.

[0085] According to one embodiment, the industrial textile 100 has one yarn with a larger diameter and three yarns with a smaller diameter of the weft yarn in a repeating pattern on a first horizontal plane. In addition, the industrial textile has one yarn with a smaller diameter of the weft yarn, two yarns with a larger diameter of the weft yarn, and one yarn with a smaller diameter of the weft yarn in a repeating pattern on a second horizontal plane. This enables a rough structure on a first side of the industrial textile and a relatively smooth structure on a second side.

[0086] According to one embodiment, the industrial textile 100 has one weft yarn with a larger diameter and one weft yarn with a smaller diameter in a repeating pattern on a first horizontal plane. In addition, the industrial textile has one weft yarn with a smaller diameter, one weft yarn with a larger diameter, and two weft yarns with a smaller diameter in a repeating pattern on a second horizontal plane. This enables a rough structure on a first side of the industrial textile and a relatively smooth structure on a second side.

[0087] Figures 3A to 3G The yarn sizes of weft yarns on a first level and a second level of an industrial textile according to at least some embodiments are shown. Larger diameter weft yarns alternate with smaller diameter weft yarns in a repeating pattern.

[0088] Figure 3A It is shown that every second yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern of the first height, there is one yarn of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter. Every second yarn of the weft yarn on the second horizontal plane has a larger diameter than the other yarns of the weft yarn on the second horizontal plane. Thus, in the repeating pattern on the second horizontal plane, there is one yarn of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter.

[0089] Figure 3B It is shown that every second yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern on the first horizontal plane, there is one yarn of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter. The diameter of every second yarn of the weft yarn on the second horizontal plane is larger than the diameters of the other yarns of the weft yarn on the second horizontal plane. Thus, in the repeating pattern on the second horizontal plane, there is one yarn of the weft yarn with a smaller diameter and one yarn of the weft yarn with a larger diameter.

[0090] Figure 3C It is shown that every second yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern on the first horizontal plane, there is one yarn of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter. Every yarn of the weft yarn on the second horizontal plane has the same diameter, which is smaller than the diameter of the larger yarn of the weft yarn on the first horizontal plane.

[0091] Figure 3D It is shown that every third yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern on the first horizontal plane, there is one yarn of the weft yarn with a larger diameter and two yarns of the weft yarn with a smaller diameter. Every third yarn of the weft yarn on the second horizontal plane has a larger diameter than the other yarns of the weft yarn on the second horizontal plane. Thus, in the repeating pattern on the second horizontal plane, there is one yarn of the weft yarn with a smaller diameter, one yarn of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter.

[0092] Figure 3EIt is shown that every third yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern on the first horizontal plane, there is one yarn of the weft yarn with a larger diameter and two yarns of the weft yarn with a smaller diameter. Every third yarn of the weft yarn on the second horizontal plane has a larger diameter than the other yarns of the weft yarn on the second horizontal plane. Thus, in the repeating pattern on the second horizontal plane, there is one yarn of the weft yarn with a larger diameter and two yarns of the weft yarn with a smaller diameter.

[0093] Figure 3F It is shown that every fourth yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern on the first horizontal plane, there is one yarn of the weft yarn with a larger diameter and three yarns of the weft yarn with a smaller diameter. In the repeating pattern on the second horizontal plane, there is one yarn of the weft yarn with a smaller diameter, two yarns of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter.

[0094] Figure 3G It is shown that every second yarn of the weft yarn on the first horizontal plane has a larger diameter than the other yarns of the weft yarn on the first horizontal plane. Thus, in the repeating pattern on the first horizontal plane, there is one yarn of the weft yarn with a larger diameter and one yarn of the weft yarn with a smaller diameter. Every fourth yarn of the weft yarn on the second horizontal plane has a larger diameter than the other yarns of the weft yarn on the second horizontal plane. Thus, in the repeating pattern on the second horizontal plane, there is one yarn of the weft yarn with a smaller diameter, one yarn of the weft yarn with a larger diameter, and two yarns of the weft yarn with a smaller diameter.

[0095] The diameter of the larger diameter yarn of the weft yarn is 0.2 mm larger than the diameter of the smaller diameter yarn of the weft yarn. Thus, the diameters of the yarns of the weft yarn are different from each other to form a textured textile surface.

[0096] The diameter of the smaller diameter yarn of the weft yarn may be, for example, below 0.6 mm, preferably 0.4 mm to 0.6 mm, more preferably 0.5 mm.

[0097] The diameter of the larger diameter yarn of the weft yarn may be, for example, more than 0.6 mm, preferably 0.6 mm to 0.9 mm, more preferably 0.7 mm.

[0098] Figure 4A surface view of an industrial textile according to at least some embodiments is shown. The yarns 111, 112 of the first warp yarns adjacent to each other are arranged in such a way that when the warp yarn 111 that happens to be selected is below the weft yarn, the warp yarn 112 adjacent to the warp yarn 111 that happens to be selected is above the weft yarn. In addition, the yarns 121, 122 of the second warp yarns adjacent to each other are arranged in such a way that when the warp yarn 121 that happens to be selected is below the weft yarn, the warp yarn 122 adjacent to the warp yarn 121 that happens to be selected is above the weft yarn.

[0099] Figure 5 A weaving pattern of an industrial textile according to at least some embodiments is shown. FW refers to the first warp yarn of the industrial textile and SW refers to the second warp yarn of the industrial textile. X indicates that a yarn of the first warp yarn or the second warp yarn is above a yarn of the weft yarn. Numbers 1 to 8 refer to warps 1 to 8. The yarn of the first warp yarn that happens to be selected and the yarn of the second warp yarn are arranged in such a way that when the yarn of the first warp yarn is combined with the yarn of the weft yarn below two (yarns of the weft yarn), the yarn of the second warp yarn is combined with the yarn of the weft yarn below two (yarns of the weft yarn). In addition, the yarn of the first warp yarn adjacent to the warp yarn that happens to be selected of the first warp yarn and the yarn of the second warp yarn adjacent to the warp yarn that happens to be selected are arranged in such a way that when the yarn of the first warp yarn is combined with the yarn of the weft yarn above two (yarns of the weft yarn), the yarn of the second warp yarn is combined with the yarn of the weft yarn above one (yarn of the weft yarn) and below one (yarn of the weft yarn).

[0100] Reference Figure 5 , the diameter of the weft yarn to which warp yarn number 1 is combined may be, for example, 0.50 mm. The diameter of the weft yarn to which warp yarn number 2 is combined may be, for example, 0.50 mm, the diameter of the weft yarn to which warp yarn number 3 is combined may be, for example, 0.70 mm, the diameter of the weft yarn to which warp yarn number 4 is combined may be, for example, 0.50 mm, the diameter of the weft yarn to which warp yarn number 5 is combined may be, for example, 0.70 mm, the diameter of the weft yarn to which warp yarn number 6 is combined may be, for example, 0.50 mm, the diameter of the weft yarn to which warp yarn number 7 is combined may be, for example, 0.50 mm, and the diameter of the weft yarn to which warp yarn number 8 is combined may be, for example, 0.70 mm. This enables a rough texture structure on the first side of the industrial textile to be achieved.

[0101] Figure 6 The contact area of ​​an industrial textile according to at least some embodiments is shown. There are higher peaks (white areas) and lower valleys in the thickness direction of the industrial textile.

[0102] According to one embodiment, the contact area may be below 20%.

[0103] The contact area is measured by a method comprising the following steps: providing a sample of industrial textile having a length of 130 mm in the machine direction and a width of 20 mm in the cross-machine direction; grinding the paper side of the sample by removing 0.12 mm in the thickness direction of the sample; photographing the sample by a microscope camera; calibrating the magnification by a calibration ruler; imaging the calibration ruler and the grinding surface of the sample at the calibrated magnification; and measuring the percentage of the contact area by an image processing software. The image area is 12 mm in the cross-machine direction.

[0104] According to one embodiment, the first machine direction yarns 111, 112 of the first warp are flat yarns.

[0105] According to one embodiment, the second machine direction yarns 121 , 122 of the second warp are flat yarns.

[0106] According to one embodiment, the cross-machine direction yarns 131, 132, 133, 134 of the weft yarns are round yarns. However, oval yarns may also be used.

[0107] Figure 7 A seaming element 140 is shown according to at least some embodiments. Industrial textile 100 includes a first edge 103 and a second edge 104 that are configured to be connected together by seaming element 140. Seaming element includes a first portion 141 connected to first edge 103 and a second portion 142 connected to second edge 104. The granular surface of the industrial textile enables the seaming element to better grip on the textile surface. As a result, the strength of the seam is higher.

[0108] Figure 7 It is shown that the first part 141 and the second part 142 of the seaming element 140 have inner surfaces, which are arranged to be in contact with the industrial textile 100. The inner surface of the first part 141 and the inner surface of the second part 142 of the seaming element 140 are shaped to correspond to the surface texture of the industrial textile 100. The grainy surface of the industrial textile and the shaped inner surfaces of the parts of the seaming element enable the seaming element to grip better on the textile surface. Thereby, the strength of the seam is higher, because the seaming element will not slip out of its position during the use of the industrial textile.

[0109] Alternatively, the inner surface of first portion 141 and the inner surface of second portion 142 of the seaming element may include teeth configured to attach to industrial textile 100. The teeth may be configured to attach to the lower valleys of the industrial textile.

[0110] According to one embodiment, the first machine direction yarns 111, 112, the second machine direction yarns 121, 122 and the cross-machine direction yarns 131, 132, 133, 134 can be basically composed of virgin or recycled polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyketone (PK), thermoplastic aliphatic polyketone (PK), polyetheretherketone (PEEK), polyamide (PA), polypropylene (PP), polyvinylidene fluoride (PVDF), polyolefin (PO), polyester (polyester, PES), polyphenylsulfone (PPSU), polyurethane (PU), polyphenylene ether (PPE), polyphenylene ketone (polyphenylene ketone), polyphenylene ether ketone (PPEK), liquid crystal polymer, aliphatic polyketone and / or biopolymer.

[0111] According to one embodiment, the industrial textile 100 is used as a transport fabric, a drying fabric, or a filter fabric.

[0112] It should be understood that the disclosed embodiments of the present invention are not limited to the specific structures, process steps or materials disclosed herein, but are extended to their equivalents, as will be recognized by those skilled in the relevant art. It should also be understood that the terminology employed herein is only used for the purpose of describing specific embodiments and is not intended to be limiting.

[0113] References throughout this specification to "one embodiment" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. Therefore, the phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment.

[0114] As used herein, for convenience, multiple items, structural elements, constituent elements and / or materials may be presented in a common list. However, these lists should be interpreted as if each member of the list were individually identified as a separate and unique component. Therefore, based solely on their presentation in a common group, without an indication to the contrary, any single component of the list should not be interpreted as being in fact equivalent to any other component of the same list. In addition, various embodiments and examples of the present invention may be referenced herein, together with alternatives for its various compositions. It should be understood that such embodiments, examples and alternatives should not be understood as being in fact equivalent to each other, but should be regarded as separate and autonomous representations of the present invention.

[0115] In addition, in one or more embodiments, the described features, structures or characteristics may be combined in any suitable manner. In the following description, many specific details, such as examples of length, width, shape, etc., are provided to provide a thorough understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that the present invention may be practiced without one or more specific details, or with other methods, components, materials, etc. In other cases, in order to avoid confusing various aspects of the present invention, known structures, materials or operations are not shown or described in detail.

[0116] Although the above examples illustrate the principles of the present invention in one or more specific applications, it is obvious to those skilled in the art that various modifications may be made in form, use and implementation details without inventive practice and without departing from the principles and concepts of the present invention. Therefore, it is not intended to limit the present invention except as set forth in the claims below.

[0117] The verb "to comprise" is used in this document as an open-ended limitation, which neither excludes nor requires the presence of unrecited features. Unless expressly stated otherwise, the features recited in the dependent claims may be freely combined with each other. Furthermore, it should be understood that the use of "a" or "an", i.e. the singular form, in this document does not exclude a plurality.

Claims

1. An industrial textile (100) having a machine direction (MD) and a cross-machine direction (CMD), and a first surface (101) and a second surface (102), the industrial textile comprising: - Double warp, including: o a first warp yarn comprising two first machine direction yarns (111, 112), and o a second warp yarn comprising two second machine direction yarns (121, 122), The two yarns (111, 112) of the first warp yarn are arranged above the two yarns (121, 122) of the second warp yarn, respectively. - weft yarns, including cross-machine direction yarns (131, 132, 133, 134), - the yarns (111, 112) of the first warp and the yarns (131, 132, 133, 134) of the weft are combined with each other according to a first predetermined pattern, - the yarns (121, 122) of the second warp and the yarns (131, 132, 133, 134) of the weft are combined with each other according to a second predetermined pattern, and - the first predetermined pattern and the second predetermined pattern form a textile structure comprising yarns of the weft yarns on a first horizontal plane (L1) and yarns of the weft yarns on a second horizontal plane (L2) in the thickness direction of the industrial textile (100), wherein, on the first horizontal plane (L1), the weft yarns with a smaller diameter are arranged to alternate with the weft yarns with a larger diameter, Characterized in that the industrial textile (100) has a contact area of ​​less than 20%.

2. The industrial textile (100) according to claim 1, wherein Every second, third or fourth yarn of the weft yarns on the first horizontal plane (L1) has a larger diameter than the other yarns of the weft yarns on the first horizontal plane (L1).

3. The industrial textile (100) according to claim 1 or 2, wherein: On the second horizontal plane (L2), the weft yarns with a smaller diameter are arranged to alternate with the weft yarns with a larger diameter.

4. The industrial textile (100) according to claim 3, wherein: The industrial textile (100) has, in a repeating pattern on the first horizontal plane (L1), one weft yarn having a larger diameter and one weft yarn having a smaller diameter, and - having in a repeating pattern on said second horizontal plane (L2) one yarn of said weft yarn having a larger diameter and one yarn of said weft yarn having a smaller diameter, or - having in the repeating pattern on said second horizontal plane (L2) one yarn of said weft yarn having a smaller diameter and one yarn of said weft yarn having a larger diameter.

5. The industrial textile (100) according to claim 3, wherein: The industrial textile (100) has one weft yarn with a larger diameter and two weft yarns with a smaller diameter in a repeating pattern on the first horizontal plane (L1), and - a repeating pattern on said second horizontal plane (L2) having one weft yarn with a smaller diameter, one weft yarn with a larger diameter and one weft yarn with a smaller diameter, or - In the repeating pattern on said second horizontal plane (L2) there is one weft yarn with a larger diameter and two weft yarns with a smaller diameter.

6. The industrial textile (100) according to claim 3, wherein: The industrial textile (100) has one weft yarn with a larger diameter and three weft yarns with a smaller diameter in a repeating pattern on the first horizontal plane (L1), and The repeating pattern on the second horizontal plane (L2) includes one weft yarn with a smaller diameter, two weft yarns with a larger diameter, and one weft yarn with a smaller diameter.

7. The industrial textile (100) according to claim 3, wherein: The industrial textile (100) has, in a repeating pattern on the first horizontal plane (L1), one weft yarn having a larger diameter and one weft yarn having a smaller diameter, and The repeating pattern on the second horizontal plane (L2) includes one weft yarn with a smaller diameter, one weft yarn with a larger diameter, and two weft yarns with a smaller diameter.

8. The industrial textile (100) according to claim 1 or 2, wherein: The diameter of the larger diameter weft yarn is 0.2 mm larger than the diameter of the smaller diameter weft yarn.

9. The industrial textile (100) according to claim 1 or 2, wherein: In the first predetermined pattern, the yarns (111, 112) of the first warp yarns are arranged to join the yarns (131, 132, 133, 134) of the weft yarns below two yarns (131, 132) and above two yarns (133, 134) of the weft yarns.

10. The industrial textile (100) according to claim 1 or 2, wherein: In the second predetermined pattern, the second warp yarns (121, 122) are configured to join the weft yarns (131, 132, 133, 134) below three weft yarns (131, 132, 133) and above one weft yarn (134).

11. The industrial textile (100) according to claim 1 or 2, wherein: The mutually adjacent yarns (111, 112) of the first warp yarn are arranged in such a way that when the warp yarn (111) selected by chance is below the yarn of the weft yarn, the warp yarn (112) adjacent to the warp yarn (111) selected by chance is above the yarn of the weft yarn.

12. The industrial textile (100) according to claim 1 or 2, wherein: The mutually adjacent yarns (121, 122) of the second warp yarn are arranged in such a way that when the warp yarn (121) selected by chance is below the yarn of the weft yarn, the warp yarn (122) adjacent to the warp yarn (121) selected by chance is above the yarn of the weft yarn.

13. The industrial textile (100) according to claim 1 or 2, wherein: - a yarn (111) of the first warp yarn and a yarn (121) of the second warp yarn are arranged in such a way that when a yarn (111) of the first warp yarn joins a yarn (131, 132) of the weft yarn under two yarns of the weft yarns, a yarn (121) of the second warp yarn joins a yarn (131, 132) of the weft yarn under two yarns of the weft yarns, and - The yarn (112) of the first warp yarn adjacent to the warp yarn (111) of the first warp yarn and the yarn (122) of the second warp yarn adjacent to the warp yarn (121) of the second warp yarn are arranged in such a way that when the yarn (112) of the first warp yarn is combined with the yarn (131, 132) of the weft yarn above the yarns of two weft yarns, the yarn (122) of the second warp yarn is combined with the yarn (131, 132) of the weft yarn above the yarn of one weft yarn and below the yarn of one weft yarn.

14. The industrial textile (100) according to claim 1 or 2, wherein: The industrial textile (100) comprises a first edge (103) and a second edge (104), wherein the first edge (103) and the second edge (104) are configured to be connected together by a seaming element (140), wherein the seaming element comprises a first portion (141) connected to the first edge (103) and a second portion (142) connected to the second edge (104).

15. The industrial textile (100) according to claim 14, wherein The inner surface of the first portion (141) and the inner surface of the second portion (142) of the seaming element (140) are shaped to correspond to the surface texture of the industrial textile (100).

16. The industrial textile (100) according to claim 14, wherein The inner surface of the first portion (141) and the inner surface of the second portion (142) of the seaming element (140) include teeth configured to be attached to the industrial textile (100).

17. Use of an industrial textile according to any one of the preceding claims, wherein the industrial textile is used as a conveyor fabric, a drying fabric or a filter fabric.

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