JP4896686B2 - Industrial double-layer fabric with longitudinal grooves - Google Patents

Description

  The present invention relates to an industrial two-layer woven fabric in which longitudinal grooves are formed, and in particular, surface smoothness, fiber support, breathability, dehydration resistance, resistance to formation of longitudinal grooves in the lower surface side layer without reducing the number of warps. The present invention relates to an industrial two-layer fabric excellent in abrasion.

Conventionally, fabrics woven with warp and weft yarns have been widely used as industrial fabrics, such as papermaking fabrics, conveyor belts, filter fabrics, etc., and weaving characteristics suitable for the application and usage environment are required. . In particular, the demands for papermaking fabrics used in the papermaking process, where the raw material is dehydrated using the mesh of the fabrics, are strict, and the fabrics have excellent surface smoothness that prevents the wire marks of the fabrics from being transferred to the paper. Dehydration to sufficiently dehydrate excess water contained, rigidity that can be suitably used even in harsh environments, wear resistance, and longer conditions necessary for producing good paper There is a need for fabrics that can last for a period of time. In addition, fiber support, improvement in paper yield, dimensional stability, running stability, and the like are required. In recent years, the speed of papermaking machines has increased, and the demand for papermaking fabrics has become more severe.
As described above, the papermaking fabrics, which are the most demanding of industrial fabrics, can be understood to understand the requirements and solutions of most industrial fabrics. Therefore, the present invention will be described below on behalf of papermaking fabrics.

  In recent years, fabrics with a two-layer structure with surface properties, fiber support, rigidity, and abrasion resistance have been widely used. In particular, the development of two-layer fabrics in which the upper and lower layers are woven with warp binding yarns is progressing. . For example, Patent Document 1 discloses a two-layer fabric using warp binding yarns. In addition to the function of weaving the upper and lower layers, the warp binding yarn is interwoven with the upper surface side weft to form a part of the upper surface side layer structure. A structure corresponding to one warp is formed. Therefore, the upper and lower layers can be firmly woven together without breaking the surface structure.

As the papermaking fabric, surface smoothness and fiber supportability are particularly demanded on the upper surface, so that a dense surface is formed by reducing the wire diameter on the upper surface and increasing the yarn density. is there. However, the dense surface tends to hinder the freeness and air permeability for dehydrating raw materials and the like.
Therefore, a technique has been utilized in which the number of lower side wefts arranged in the two-layer fabric is less than that of the upper side wefts and a drainage space is provided in the lower layer. The embodiment shown in FIG. 1 of Patent Document 1 has the same concept, and the arrangement ratio of the upper surface side wefts and the lower surface side wefts is 2: 1 and the lower surface side wefts are smaller. As described above, a method has been adopted in which the upper surface has a dense fabric with excellent drainage and air permeability. However, since the drainage space extending in the lateral direction is a dewatering groove formed in a direction perpendicular to the fabric running direction, the passage of water is obstructed, and the drainage and air permeability are not sufficient. It cannot be solved.
JP 2003-342889 A

  An object of the present invention is to provide an industrial two-layer woven fabric that improves the dewaterability, breathability, and abrasion resistance, which are conventional problems, while maintaining surface smoothness and fiber support.

The present inventor considers that a two-layer fabric having a rough structure in which the upper layer on the upper side is dense while the lower layer on the lower layer has a drainage space is effective, and further efficient dewatering is performed. Therefore, in addition to the conventionally used dewatering groove extending in the machine crossing direction (lateral direction), by forming a structure that forms a dewatering groove extending in the machine running direction (longitudinal direction), the drainage and air permeability are improved. We have developed textiles suitable for various industrial fields that are required.
The present invention employs the following configuration in order to solve the above problems.
(1) In a two-layer fabric formed by weaving an upper surface side layer composed of upper surface side warps and upper surface side wefts and a lower surface side layer composed of lower surface side warps and lower surface side wefts with warp binding yarns connecting the upper and lower layers. The upper surface side warp comprises a first upper surface side warp and a second upper surface side warp having different structures, and the first upper surface side warp has a complementary portion that does not pass above the upper surface side wefts that should pass through the fabric structure. Then, the warp binding yarns arranged adjacent to each other in the complementary portion pass over the upper surface side wefts to form the same structure of one warp as the second upper surface side warp on the upper surface side surface, and are arranged adjacent to each other on the lower surface side layer. A plurality of lower surface side warps and warp binding yarns cooperate to form two or three parallel knuckles corresponding to two or three warps on the lower side of the lower surface side weft. 2 or 3 knuckles to be arranged appear on the lower surface side alternately with one lower surface side weft, Two or three warp yarns are closely adhered to each other to form one or more warp yarns, and the lower side weft is above one warp yarn texture group. It is a structure that passes under one weave tissue group alternately, and is an industrial two-layer fabric in which a longitudinal groove extending in the longitudinal direction is formed between the weave tissue group and the weave tissue group on the lower surface side layer. .

(2) In addition to the weave fabric group formed by the lower surface side warp and the warp binding yarn described in (1) above, two or three adjacent lower surface side warps are aligned to alternate one lower surface side weft. up and down to have straight corduroy tissues group to form a plain weave, a straight corduroy tissue group and corduroy tissue groups coexist disposed completely within the tissue, longitudinally between the straight corduroy tissue group and corduroy tissue group An industrial two-layer woven fabric characterized in that grooves are formed.
(3) One first lower surface side warp, one or two second lower surface side warps, and one warp binding yarn in which the warp forming the weave fabric group is interwoven with the lower surface side weft. The first lower surface side warp and the second lower surface side warp have different structures, and the first lower surface side warp does not pass below the lower surface side wefts that should pass through the fabric structure, and is adjacent to the warp. The above-mentioned (1) or (2), wherein the binding yarn passes under the lower surface side wefts to form a plain weave structure on the lower surface side of the same warp as the second lower surface side warp. An industrial two-layer fabric in which the longitudinal grooves described in 1 are formed.
(4) The warp forming the weave fabric group is one or two second lower surface side warps interwoven with the lower surface side wefts and two warp binding yarns, and adjacent two warps The above (1) or (2) is characterized in that a plain weave structure corresponding to one warp same as the second lower surface side warp is formed on the lower surface by passing the lower side of the different lower surface side wefts. It is an industrial two-layer fabric in which the longitudinal grooves described are formed.

(5) The warp forming the woven fabric texture group is one lower surface side warp and two warp binding yarns, and the lower surface side warp and the warp binding yarns are provided below the lower surface side wefts. It is a structure that forms two knuckles arranged in parallel, and the lower surface side warp is a structure that forms a plain weave structure that passes alternately above and below one lower surface side weft, and adjacent to each other are warp binding yarns. In some of the knuckles on the lower surface side warp, the lower surface side knuckle of the lower surface side warp and the warp binding yarn arranged on the left side form two parallel knuckles. The warp binding yarn arranged on the right side forms a knuckle on the lower surface side warp and two parallel knuckles, and the industrial two-layer formed with the longitudinal grooves according to the above (1) or (2) It is a woven fabric.

(6) The warp forming the woven fabric group is two lower surface side warps and two warp binding yarns interwoven with the lower surface side wefts, and the lower surface side warp and the warp binding yarns It is a structure that forms three knuckles arranged in parallel under the lower surface side wefts, and the two lower surface side warps form a plain weave structure that alternately passes above and below the same lower surface side wefts. In some cases, the lower knuckles of the two lower warps and the three knuckles formed by one warp binding yarn are arranged in parallel, and the other knuckles of the lower warp are on the lower surface side of the lower warp The industrial double-layer fabric with the longitudinal grooves as described in (1) or (2) above, wherein a knuckle and three knuckles formed by the other warp binding yarn are arranged in parallel It is.
(7) The warp binding yarn forming the woven tissue group is disposed at an end of the woven tissue group, and is described in any one of (1) to (6) above This is an industrial two-layer fabric with longitudinal grooves formed.

  The industrial two-layer woven fabric according to the present invention has a dense structure on the upper surface side layer, and a lower surface layer has a warp binding double layer structure in which longitudinal grooves extending in the machine running direction are formed without reducing the number of warps. Thus, it is possible to make a woven fabric excellent in surface smoothness, fiber support, dehydration, breathability, and abrasion resistance.

The greatest feature of the industrial two-layer fabric of the present invention is that a groove extending in the vertical direction is formed on the lower surface.
Among industrial fabrics, papermaking fabrics are particularly required to have surface properties and fiber support of the upper surface layer, so that the surface diameter of the upper surface is reduced and the arrangement density of the yarn is increased to provide a dense surface. Came. However, since it has a dense surface, the drainage and water permeability for dehydrating the raw materials and the like tend to be hindered. A technique for providing a drainage space in the lower layer has been utilized. By this method, it is possible to provide a woven fabric excellent in drainage and air permeability while the upper surface is dense by simply operating the weft driving without changing the warp mechanism.

  However, when this fabric is used, since the warp of the fabric is in the traveling direction and the weft is orthogonal to the traveling direction, the drainage space provided in the lower surface layer also exists in the orthogonal direction to the traveling direction. Dehydration could not be obtained. This is because a part of the water dehydrated on the fabric is retained in the drainage space provided in the lower layer, but when the wet paper separates from the fabric, the water retained in the drainage space is moved in the direction of fabric travel. This is because there is no groove along the line so that it is not dehydrated and returns to the dehydrated object again. Therefore, the inventor of the present invention thought that efficient dehydration can be achieved by providing a drainage space along the fabric traveling direction.

  As means for providing a dewatering groove in the longitudinal direction on the lower surface side, there is a method of reducing the number of lower surface side warps. However, since the woven fabric itself is used under high tension, if the number of warp yarns is reduced, the rigidity is lowered, and the occurrence of elongation and the problem of running stability occur. Therefore, the inventor of the present invention has reached the configuration of the present invention in which a dewatering groove extending in the longitudinal direction is provided on the lower surface side by a woven structure without reducing the number of warps.

Terms used in the specification of the present invention will be described.
The complete structure is the smallest repeating unit that forms a woven structure, and this is repeated in front, rear, left, and right to form a woven fabric. In addition, since this woven fabric has a two-layer structure composed of an upper surface side layer and a lower surface side layer, the complete structure formed is also a combination of the upper surface side layer and the lower surface side layer. And the number of shafts on the upper surface side layer is the number of warps on the upper surface side forming the complete structure, the number of shafts on the lower surface side layer is the number of warp threads on the lower surface side forming the complete structure, and the number of shafts of the entire fabric is Represents the total number of warps forming a complete structure.

The knuckle is a weaving portion formed on the surface of the fabric that is bent along the weft where the warp passes over (or under) one (or two) wefts. Is formed.
And, the weaving texture group, a plurality of adjacent lower surface side warps, two or three knuckles arranged in parallel formed on the lower surface side surface by warp binding yarn, alternately appear one lower surface side weft, Apparently, it refers to a group of warp yarns in which two or three warp yarns closely contacting each other form a plain weave structure. Since the warp binding yarn is a yarn that forms part of both the upper surface side layer and the lower surface side layer, the warp binding yarn is preferably disposed on both sides of the weave tissue group so as not to enter the layer where it should be exposed.

Further, the straight-running weave texture group is a structure in which two or three adjacent lower surface side warps are aligned to form a plain weave structure that passes alternately above and below the same lower surface side weft, and refers to a group of warps arranged in close contact with each other. .
In the present invention, it suffices that at least one weaving tissue group is arranged in the complete fabric structure, and other groups may be used as the straight traveling weaving tissue group. Of course, there is no need to have a straight-running texture group. A longitudinal groove is formed between the groups. In this case, “group and group” means “two texture groups” and “texture group and straight texture groups”. May mean. In addition, for the sake of convenience, the straightly-woven tissue group may be simply expressed as a textured tissue group. However, as described above, if at least one textured tissue group exists in the complete tissue, the other is a straight-forwarded textured tissue group. It is because it may be replaced with.

  The woven fabric of the present invention is a woven fabric having a two-layer structure comprising an upper surface side layer composed of upper surface side warps and upper surface side wefts, and a lower surface side layer composed of lower surface side warps and lower surface side wefts, and the upper and lower layers are formed by warp binding yarns. Weaving. The warp binding yarn forms part of the upper surface side layer, and the warp binding yarn forms part of the lower surface side layer. A warp binding yarn is a structure that passes over at least one upper surface side weft, goes down to the lower surface side, and passes under the lower surface side weft, and functions as an upper surface side warp and a lower surface side warp. And also has a function as a binding yarn. In the woven fabric of the present invention, the upper surface side warp and the lower surface side warp are disposed in a ratio of 1: 1, and it is preferable to dispose the warp binding yarn instead of the lower surface side warp.

The upper surface side warp includes a first upper surface side warp and a second upper surface side warp, which are always interwoven with the upper surface side weft. The second upper surface side warp is a structure that is continuously woven with the upper surface side weft without breaking the upper surface side structure. The first upper surface side warp basically forms the same structure as the second upper surface side warp. Although it is going to be a part, it is the structure | tissue which passes between the upper surface side weft and the lower surface side weft without passing over the upper surface side weft which should pass originally.
Further, the complementary portion refers to a portion where the first upper surface side warp does not pass over the upper surface side weft that should be passed through, and the adjacent connected warp does not break the structure in that portion. The warp binding yarn complements the structure lacking the first upper surface side warp. Therefore, the first upper surface side warp and the warp binding yarn are arranged adjacent to each other. Thereby, the first upper surface side warp and the warp binding yarn cooperate to form the same structure as the second upper surface side warp on the upper surface.

  The woven fabric of the present invention is a woven fabric having a two-layer structure comprising an upper surface side layer composed of upper surface side warps and upper surface side wefts, and a lower surface side layer composed of lower surface side warps and lower surface side wefts, and the upper and lower layers are formed by warp binding yarns. Weaving. In the upper surface side layer, the warp binding yarn forms a part thereof. A warp binding yarn is a structure that passes over at least one upper surface side weft, goes down to the lower surface side, and passes through the lower side of one lower surface side weft, and functions as an upper surface side warp and as a binding yarn. Have both.

  The “structure for one warp” in the upper surface side layer may be any structure, and the structure of the first upper surface side warp and the warp binding yarn is determined so as to match the second upper surface side warp. There are several variations of the tissue depending on the supplement location and the connecting position on the lower surface side, and can be selected as appropriate. For example, the structure of the warp binding yarn includes a structure that passes over one upper surface side weft in the upper surface side layer and a structure that passes over two upper surface side wefts, and one lower surface side weft on the lower surface side. Examples include tissues that pass underneath.

As the upper surface side surface texture, a plain weave structure, a twill weave constructed by sequentially shifting a 1/3 structure passing through three upper surface side wefts after passing over one upper surface side weft, or randomly shifting There is a satin weave, and a 2/3 structure that passes over the two upper surface side wefts and then passes under the three upper surface side wefts, and the like may be determined in consideration of the structure and arrangement of each yarn. .

  Here, “the structure formed by the first upper surface side warp and the warp binding yarn” is limited to “the structure of one warp”, but the first upper surface side warp and the warp binding yarn are the same upper surface side weft. It means that there is no organization that passes through. A structure that passes the upper side of the same upper surface side weft is not preferable because warp knuckles are arranged only in that portion, so that the weft is drawn more strongly and falls. Moreover, since it becomes a structure | tissue different from the 2nd upper surface side warp which forms the upper surface side surface structure | tissue by one, surface structure collapse | crumbles and is not preferable.

Similarly, the lower surface side layer is composed of a plurality of lower surface side warps and warp binding yarns, and a plurality of adjacent lower surface side warps and warp binding yarns cooperate with each other on the lower side of the lower surface side wefts. Alternatively, a knuckle corresponding to two or three warps arranged in parallel is formed, and the two or three knuckles arranged in parallel appear alternately on the lower surface of the lower surface side weft and appear to closely contact each other. Two or three warps are aligned to form a plain weave group that forms a plain weave structure.
Since the lower surface side weft is strongly woven by the warp binding yarn having the same function as the lower surface side warp and the lower surface side warp, the lower surface side weft is excellent in rigidity, and the lower surface side weft protrudes from the surface, so that the wear resistance is improved.

The structure of the lower surface side weft is a structure that alternately passes over one weave group and under one weave group. A longitudinal groove extending in the longitudinal direction is formed between the weave tissue group and the weave tissue group.
Here, in the lower surface side layer, a plurality of lower surface side warps and warp binding yarns arranged adjacent to each other are equivalent to two or three warp yarns arranged in parallel under the lower surface side weft. The two or three knuckles arranged in parallel appear alternately on the lower surface side surface and form a weave texture group corresponding to two or three warps. There are four methods shown in the following (1) to (4).

  When these are described in detail, (1) is a breakdown of “a plurality of lower surface side warps and warp binding yarns (adjacent to form a weave texture group)”. The first lower surface side warp, one or two second lower surface side warps, and one warp binding yarn, wherein the first lower surface side warp and the second lower surface side warp have different structures, The lower surface side warp is a plain weave structure that passes alternately above one lower surface side weft and below the lower surface side weft. The first lower surface side warp does not pass below the lower surface side wefts that should pass through the fabric structure, and the adjacent warp binding yarns pass below the lower surface side wefts. Form a plain weave structure of the minute. That is, the first lower surface side warp and the warp binding yarn form knuckles on the lower side of the lower surface side wefts that are different from each other, and form a structure equivalent to a plain weave structure that apparently forms one warp. To do.

And, by setting one of the first lower surface side warp and the warp binding yarn to pass through the lower side of the lower surface side weft through which the second lower surface side warp passes, there is a knuckle parallel to the lower side of the lower surface side weft. Will be formed.
For example, when the number of the second lower surface side warp is one, a woven fabric group of two warps in which two knuckles are arranged in parallel is formed. And when the 2nd lower surface side warp is two, the woven fabric structure group for three warps which three knuckle arranges in parallel is formed. In the present invention, the weaving tissue group is for two or three warps, but if it is four or more, it is not preferred because the warps are difficult to move and they are difficult to closely contact.

(2) is composed of one or two lower surface side warps and two warp binding yarns interwoven with the lower surface side wefts. As a result, a plain weave structure corresponding to one warp same as the lower side warp is formed on the lower side surface.
The lower surface side warp is a plain weave structure that alternately passes over one lower surface side weft and under one lower surface side weft as in (1) above.
Then, one of the two warp binding yarns passes under the lower surface side weft through which the lower surface side warp has passed, and a knuckle of the warp binding yarn parallel to the knuckle of the lower surface side warp is formed. .
For example, when the number of the lower surface side warp is one, two knuckles composed of the lower surface side warp and the warp binding yarn are arranged in parallel to form a weave texture group for two warps. When there are two lower surface side warps, three knuckle are arranged in parallel to form a weave texture group of three warps.

(3) is composed of one lower surface side warp and two warp binding yarns, and the lower surface side warp is a structure that forms a plain weave structure passing through the top and bottom of one lower surface side weft alternately. The warp binding yarns are adjacent to each other.
And in a part of the knuckle formed by the lower surface side warp, the warp binding yarn arranged on the left side of the lower surface side warp forms a knuckle in parallel with the knuckle formed by the lower surface side warp, and in the other part the lower surface The warp binding yarn arranged on the right side of the side warp forms a knuckle in parallel with the knuckle formed by the lower surface side warp. As a result, a woven fabric group of two warps in which two knuckles are arranged in parallel is formed.

(4) is obtained by adding one lower surface side warp to be interwoven with the lower surface side weft to the method of (3), and is a structure forming three knuckles arranged in parallel below the lower surface side weft. Similar to (3), the lower surface side warp is a structure that forms a plain weave structure that passes alternately above and below the lower surface side weft.
The arrangement of the warp is not particularly limited. For example, the warp binding yarn is arranged on both sides of one lower surface side warp, and the other lower surface side warp is arranged beside either one of the warp binding yarns. A thing which arranged warp binding yarn on both sides so that two lower surface side warps may be pinched, and a thing which arranged lower side warp on both sides so that two other warp binding yarns may be pinched There may be. These four warp yarns form a group of three warp yarns in which three knuckles are juxtaposed.

  As an example, in a four-ply weave fabric group in which one first lower surface side warp and warp binding yarn are alternately arranged, the two lower surface side warps have the same structure and the same lower surface side weft. In a part of the knuckle formed by the lower surface side warp, which is a plain weave structure passing through the upper and lower sides, one warp binding yarn is juxtaposed with the knuckle formed by the lower surface side warp, and as a result, three parallel knuckles are formed. In other knuckles, the other warp binding yarns are juxtaposed with the knuckles formed by the lower surface side warps, and as a result, three knuckles are formed.

  A texture group is formed by the above four methods. In addition, there may be a group of straight advancing weave structures in which two or three adjacent lower surface side warps are aligned to form a plain weave structure in which the same lower surface side wefts are alternately raised and lowered one by one. This is arranged for adjusting the number of yarns when forming a group of two or three warp yarns with a limited number of warp yarns, or for reducing the number of binding yarns.

  Since the structure of the lower surface side weft is a structure that passes alternately above one weave structure group and below one weave structure group, adjacent weave structure groups form knuckles under different lower surface wefts. ing. That is, when one weave group is a structure passing above and below one lower surface side weft, the adjacent weave structure groups are structures passing below and above one lower surface weft. It becomes.

Since the warp constituting one weave fabric group always passes above and below the same lower surface side weft, it is entangled with the weft at the intersection with the lower surface side weft, and the lower surface side warp of the adjacent weave fabric group On the contrary, since the structure exists on the lower surface side wefts, a difference in height occurs in the lower surface side wefts, and the warp yarns of the woven fabric group tend to stick together. And since the adjacent weaving tissue group shows an opposite behavior, it tends to leave the group. Thereby, the upper surface side warp of the upper surface side layer is uniformly arranged,
The lower surface layer has a structure in which locations (groups) where warps are in close contact and locations (grooves) separated from each other appear alternately. The lower surface side weft is a structure that passes alternately above and below a single weave group, but is substantially a structure that passes above and below a plurality of lower surface side warps, so that the lower surface is relatively long. Crimp is formed and the structure has excellent wear resistance. Further, since the lower surface side wefts are strongly woven from the lower side by a plurality of warp yarns arranged continuously, the lower surface side weft crimps protrude outward and the wear resistance volume increases. This becomes more prominent in the woven fabric of the present invention in which warp binding yarns are arranged at the ends of the weave fabric group.
The warp constituting the woven fabric can be appropriately selected such as 16 shaft, 20 shaft, 24 shaft, and is not limited.

Regarding the wire diameter of the constituent yarn to be used, it is preferable that the upper surface side weft and the upper surface side warp constituting the upper surface side have a relatively small wire diameter in order to obtain a dense and smooth surface. Since the warp binding yarn and the upper surface side warp cooperate to form an upper surface side layer structure, their wire diameters are preferably the same.
For the wefts, the upper side layer has a dense surface, so the upper side weft has a relatively small wire diameter, and the lower side layer is the machine or roll contact surface side, and the lower side surface has rigidity and wear resistance. Since it is required, it is preferable that the lower surface side weft has a relatively large wire diameter. Further, even if the wire diameters of the upper surface side weft, the lower surface side weft, and the warp binding yarn are the same, only the lower surface side warp may have a large diameter, and of course, the lower surface side warp may have the same diameter. The arrangement ratio of the upper surface side wefts and the lower surface side wefts may be 1: 1, and other ratios such as 2: 1, 3: 2, 4: 3 can be selected as appropriate. By making the number of lower surface side wefts smaller than the number of upper surface side wefts, transverse grooves are also formed, and when combined with longitudinal grooves, dewaterability and freeness are further improved.

  The yarn used in the present invention may be selected depending on the application. For example, in addition to monofilament, multifilament, spun yarn, crimped processing, bulky processing, etc., generally textured yarn, bulky yarn, stretch yarn, etc. Processed yarns that are called, or yarns that are combined by twisting them can be used. Also, the cross-sectional shape of the yarn is not limited to a circle, but a short yarn such as a square shape or a star shape, an elliptical shape, or a hollow yarn can be used. The material of the yarn can also be freely selected, and polyester, polyamide, polyphenylene sulfide, polyvinylidene fluoride, polypro, aramid, polyetheretherketone, polyethylene naphthalate, polytetrafluoroethylene, cotton, wool, metal, etc. are used. it can. Of course, you may use the thread | yarn which blended and contained various substances according to the objective to these copolymers or these materials.

  In general, as the papermaking wire, it is preferable to use a polyester monofilament having rigidity and excellent dimensional stability for the upper surface side warp, the lower surface side warp, the warp binding yarn, and the upper surface side weft. In addition, it is preferable to interweave polyester monofilaments and polyamide monofilaments alternately on the lower surface side wefts that require wear resistance so that the wear resistance can be improved while ensuring rigidity.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to the drawings.
1 to 9 show an embodiment of the present invention, and FIG. 10 shows a conventional example. 1, 4, 6, and 8 are design drawings, FIGS. 2, 5, 7, and 9 are cross-sectional views along warps, and FIGS. 3 and 10 are cross-sectional views along wefts.

The design drawing is the smallest repeating unit of the fabric structure, and this complete structure is connected vertically and horizontally to form the entire fabric structure. In the design drawing, the warp is indicated by Arabic numerals, for example, 1, 2, 3,..., And there are cases where the set includes an upper surface side warp and a lower surface side warp and the set includes an upper surface side warp and a warp binding yarn. Wefts are indicated by Arabic numerals with dashes, for example, 1 ′, 2 ′, 3 ′. Depending on the arrangement ratio, the upper surface side weft and the lower surface side weft may be arranged one above the other, or only the upper surface side weft may be provided.

  Further, a cross indicates that the upper surface side warp is located above the upper surface side weft, and a □ indicates that the lower surface side warp is located below the lower surface side weft. ◆ indicates that the warp binding yarn is located above the upper weft and forms a knuckle. ◇ indicates that the warp binding yarn is located below the lower weft and forms a knuckle. Indicates that

In the design drawing, the yarns are arranged so as to overlap with each other accurately, but this is for the convenience of the drawing and may be displaced in an actual fabric. In particular, since the lower surface side warp forms a woven fabric group, the overlap with the upper surface side warp is often greatly shifted. As for the wefts, there are some places where the lower surface side wefts are not arranged below the upper surface side wefts from the arrangement ratio.
In each figure, the weave tissue group is indicated by A, and the straight weave tissue group is indicated by B.

Example 1
FIG. 1 is a design diagram of a fabric of Example 1 of the present invention. Example 1 is a 24-shaft fabric composed of 24 warp yarns, 2, 8, 14, and 20 being warp binding yarns. It is characterized by forming one plain weave structure. The arrangement ratio of the upper surface side weft and the lower surface side weft is 2: 1.

The upper surface side layer has a plain weave structure and is formed by two different upper surface side warps and warp binding yarns.
For example, the warp 1 is a second upper surface side warp and forms a plain weave structure that alternately passes above and below one upper surface side weft. And the warp 3 is a 1st upper surface side warp, and is a structure | tissue in which a part knuckle of a plain weave structure is not formed. The warp 2 is a warp binding yarn, and the first upper surface side warp 3 should pass through the upper side of the upper surface side weft of the complementary portion that should have passed through the woven fabric in order to form a plain weave structure. It is. As a result, the warp binding yarn 2 and the first upper surface side warp 3 cooperate to form a plain weave structure for one warp on the upper surface. Although the combination is shifted in the warp cross-sectional view of FIG. 2, the warp binding yarn 2 and the upper surface side warp 3 are substantially arranged adjacent to each other, so that they come into close contact with each other to form a plain weave structure for one warp. ing.
Then, the plain weave structure formed by the first upper surface side warp and the warp binding yarn and the plain weave structure formed by the second upper surface side warp form a uniform plain weave structure on the upper surface side surface.

  The lower surface side layer is composed of a first lower surface side warp, a second lower surface side warp and a warp binding yarn which are interwoven with the lower surface side weft, and the first lower surface side warp and the warp binding yarn cooperate to form the lower surface side. It is a structure that forms a plain weave structure for one warp on the surface. The second lower surface side warp forms a plain weave structure passing alternately above and below one lower surface side weft.

For example, the warp 4 is a first lower surface side warp and is a structure in which a part of the knuckle forming the plain weave structure is not formed. The warp yarn 2 is a warp binding yarn, and the first lower surface side warp 4 should originally pass through the fabric structure to form a plain weave structure, but it passes through the lower side of the lower surface side weft that did not pass. is there. Since these are arranged adjacent to each other, the warp binding yarn 2 and the first lower surface side warp 4 cooperate to form a plain weave structure for one warp on the lower surface.
The warp 6 is a plain weave structure that alternately passes above and below one lower surface side weft. Either the warp binding yarn 2 or the first lower surface side warp 4 passes below the lower surface side weft through which the lower surface side warp 6 passes, so that these two knuckles are arranged in parallel. The two knuckles arranged in parallel appear on the lower surface side alternately with the lower surface side wefts, and form a group of weave textures in which two warps are in close contact.

In FIGS. 1, 2, and 3, the weave group is indicated by A, and in this embodiment, there are four groups of warp groups consisting of warps 2-6, 8-12, 14-18, 20-24. As shown in FIG. 3, since the lower surface side warp is closely arranged in the woven tissue group, a groove (hatched portion in the figure) extending in the longitudinal direction is formed between the woven tissue group and the woven tissue group. It becomes a fabric excellent in dehydration and breathability. This clearly forms a wider longitudinal groove than the width of the conventional dewatering groove of FIG. 10, which forms a crimp of the same length of two warps on the lower surface.
Further, the lower surface side weft is a structure that alternately moves up and down the weave group, and the weft crimp of FIG. 3 is much longer than the weft crimp of FIG. 10 and has an excellent wear resistance effect.
In this way, since the upper surface side is dense, the fiber support and surface smoothness are excellent, and the lower surface is formed with grooves along the vertical direction so that it is dewaterable, free-flowing, and breathable. And a woven fabric excellent in wear resistance.

(Example 2)
FIG. 4 is a design diagram of the fabric of Example 2 of the present invention. Example 2 is a 16-shaft fabric composed of 16 warps, and 6, 8, 14, 16 are warp binding yarns, and two warp binding yarns cooperate with each other on the lower surface side for one warp. It is characterized by forming a plain weave structure. The arrangement ratio of the upper surface side weft and the lower surface side weft is 2: 1.
The upper surface side layer has a plain weave structure, and a uniform plain weave structure is formed on the upper surface side surface as in the previous embodiment.
The lower surface side layer is composed of a second lower surface side warp and a warp binding yarn interwoven with the lower surface side weft, and the two warp binding yarns cooperate to form a plain weave structure for one warp on the lower surface. The organization that forms.

For example, in FIG. 4, the lower surface side warps 2 and 4 form a plain weave structure. These form a knuckle under the lower surface side wefts 1 ', 5', 9 '. One of the warp binding yarns 6 and 8 forms a knuckle on the lower side of the lower surface side weft. Thereby, three parallel knuckle is formed in the woven tissue group.
In this way, since the upper surface side is dense, the fiber support and surface smoothness are excellent, and the lower surface is formed with grooves along the vertical direction so that it is dewaterable, free-flowing, and breathable. And a woven fabric excellent in wear resistance.

(Example 3)
FIG. 6 is a design diagram of the fabric of Example 3 of the present invention. Example 3 is a 20-shaft fabric composed of 20 warp yarns. 6, 10, 16, and 20 are warp binding yarns, and a warp yarn 2 is composed of one lower surface side warp and warp binding yarns arranged on both sides thereof. It is characterized by forming a plain weave structure. The arrangement ratio of the upper surface side weft and the lower surface side weft is 2: 1.
The upper surface side layer has a plain weave structure, and a uniform plain weave structure is formed on the upper surface side surface as in the previous embodiment.
The lower surface side layer is composed of a lower surface side warp and a warp binding yarn which are interwoven with the lower surface side weft, and one lower surface side warp and two warp binding yarns cooperate to form a warp 2 on the lower surface side surface. It is a structure that forms a plain weave structure.

  For example, in FIG. 6, the warp 8 is a lower surface side warp, and the warps 6 and 10 are warp binding yarns. The warp 8 forms a plain weave structure, and a knuckle is formed below the lower side wefts 3 ', 7', 11 ', 15', 19 ', 23'. One of the warp binding yarns 6 and 10 forms a knuckle on the lower side of the lower surface side weft. Thereby, two parallel knuckles are formed in the woven tissue group. On the design drawing, the woven tissue group meanders, but in an actual fabric, it tries to be straight and functions as a longitudinal groove.

Further, warps 2 and 4, 12 and 14 are a group of straight advancing warp weave structures, and these two lower surface side warps are aligned to form a plain weave structure passing alternately above and below the same lower surface side weft. This differs from the woven fabric group in that no warp binding yarn is present in the warp constituting the group. However, the warp yarns are closely arranged in the same manner as the weaving texture group, and a longitudinal groove is formed between the groups.
In this way, since the upper surface side is dense, the fiber support and surface smoothness are excellent, and the lower surface is formed with grooves along the vertical direction so that it is dewaterable, free-flowing, and breathable. And a woven fabric excellent in wear resistance.

Example 4
FIG. 8 is a design diagram of the fabric of Example 4 of the present invention. Example 4 is a 24-shaft fabric composed of 24 warps, and 6, 12, 18, and 24 are warp binding yarns. Two warp binding warps and two warp binding yarns arranged on both sides of the warp 3 It is characterized by forming a plain weave structure. The arrangement ratio of the upper surface side weft and the lower surface side weft is 2: 1.
The upper surface side layer has a plain weave structure, and a uniform plain weave structure is formed on the upper surface side surface as in the previous embodiment.
The lower surface side layer is composed of a lower surface side warp and a warp binding yarn which are interwoven with the lower surface side weft, and the two lower surface side warps and the two warp binding yarns cooperate to form a warp 3 on the lower surface side surface. It is a structure that forms a plain weave structure.

  For example, in FIG. 8, warps 8 and 10 are second lower surface side warps, and warps 6 and 12 are warp binding yarns. The second lower surface side warps 8, 10 form a plain weave structure, and a knuckle is formed below the lower surface side wefts 3 ', 7', 11 ', 15', 19 ', 23'. One of the warp binding yarns 6 and 12 forms a knuckle on the lower side of the lower surface side weft. Thereby, three parallel knuckles are formed in the woven tissue group. On the design drawing, the weave tissue group meanders, but in an actual fabric, it tries to be straight and functions as a longitudinal groove.

Further, warps 2 and 4, 14 and 16 are a group of straight advancing warp weave structures, and these two lower surface side warps are aligned to form a plain weave structure alternately passing above and below the same lower surface side weft. This is different from the woven tissue group, and there is no warp binding yarn among the warp yarns constituting the group. However, the warp yarns are closely arranged in the same manner as the weaving texture group, and a longitudinal groove is formed between the groups.
In this way, since the upper surface side is dense, the fiber support and surface smoothness are excellent, and the lower surface is formed with grooves along the vertical direction so that it is dewaterable, free-flowing, and breathable. And a woven fabric excellent in wear resistance.

It is a design figure which shows the complete structure of Example 1 of this invention. It is sectional drawing of the warp 1-12 of FIG. It is sectional drawing of the weft 3 'of FIG. It is a design figure which shows the complete structure of Example 2 of this invention. It is sectional drawing of the warp 1-8 of FIG. It is a design figure which shows the complete structure of Example 3 of this invention. It is sectional drawing of the warp 1-10 of the design drawing of FIG. It is a design figure which shows the complete structure of Example 4 of this invention. It is sectional drawing of the warp 1-12 of the design drawing of FIG. It is sectional drawing along the weft of the textile fabric of a prior art example.

Explanation of symbols

1, 2, 3 ... 12 Upper surface side warp, lower surface side warp, warp binding yarn 1 ', 2' ... 24 'Upper surface side weft, lower surface side weft

Claims (7)

In the two-layer fabric formed by weaving the upper surface side layer composed of the upper surface side warp and the upper surface side weft and the lower surface side layer composed of the lower surface side warp and the lower surface side weft with the warp binding yarns connecting the upper and lower layers, the upper surface The side warp is composed of a first upper surface side warp and a second upper surface side warp having different structures, and the first upper surface side warp has a complementary portion that does not pass above the upper surface side wefts that should pass through the fabric structure. The warp binding yarns arranged adjacent to each other in the complementary portion pass over the upper surface side wefts, and form the same structure as the second upper surface side warp on the upper surface side surface. The lower surface side warp and the warp binding yarn cooperate to form two or three parallel knuckles corresponding to two or three warp yarns on the lower side of the lower surface side weft, and arrange these two in parallel. Alternatively, the knuckle 3 appears on the lower surface side alternately with one lower surface side weft, and warp By forming a weaving tissue group in which two or three are in close contact, one or more warps are provided between the weaving tissue groups, and the lower surface side weft is above one weaving tissue group. An industrial two-layer structure in which a longitudinal groove extending in the longitudinal direction is formed between the woven tissue group and the woven tissue group on the lower surface side layer. fabric. In addition to the weave fabric group formed by the lower surface side warp and the warp binding yarn according to claim 1, a plain weave in which two or three adjacent lower surface side warps are aligned and one lower surface side weft alternately goes up and down. There is a straight-textured tissue group that forms a tissue, and a straight-textured tissue group and a textile tissue group are mixedly arranged in the complete structure, and a longitudinal groove is formed between the straight-advanced texture group and the textured tissue group. An industrial two-layer fabric characterized by that. The warp forming the weave weave group is one first lower surface side warp interwoven with the lower surface side weft, one or two second lower surface side warps, and one warp binding yarn, The first lower surface side warp and the second lower surface side warp have different structures, and the first lower surface side warp does not pass below the lower surface side wefts that should pass through the fabric structure and is adjacently disposed. The longitudinal groove according to claim 1 or 2, wherein a plain weave structure corresponding to one warp same as the second lower surface side warp is formed on the lower surface side surface by passing under the lower surface side weft. A formed industrial double-layer fabric. The warp forming the weave weave group is one or two second lower surface side warps and two warp binding yarns interwoven with the lower surface side wefts, and two warp binding yarns arranged adjacent to each other. 3. The longitudinal groove according to claim 1 or 2, wherein a plain weave structure is formed on the lower surface side of the lower surface side weft by different one of the same warps as the second lower surface side warp. Industrial two-layer fabric. The warp forming the weave texture group is one lower surface side warp and two warp binding yarns, and the lower surface side warp and the warp binding yarn are arranged in parallel below the lower surface side weft. It is a structure that forms two knuckles, and the lower surface side warp is a structure that forms a plain weave structure that passes alternately above and below one lower surface side weft, and warp binding yarns are adjacently arranged on both sides of the structure. In a part of the side warp knuckle, the lower side knuckle of the lower side warp and the warp binding yarn arranged on the left side form two parallel knuckles. In the other knuckle part of the lower side warp, The industrial double-layer fabric with longitudinal grooves according to claim 1 or 2, wherein the arranged warp binding yarns form a knuckle on the lower surface side warp and two parallel knuckles. The warp yarns forming the weave fabric group are two lower surface side warps and two warp binding yarns interwoven with the lower surface side wefts, and the lower surface side wefts by the lower surface side warps and the warp binding yarns. The two lower surface side warps form a plain weave structure that passes alternately above and below the same lower surface side weft, and a part of the knuckle of the lower surface side warp The lower surface side knuckle of the two lower surface side warps and the three knuckle formed by one warp binding yarn are arranged in parallel, and in the other knuckle part of the lower surface side warp, the lower surface side knuckle of the lower surface side warp, The industrial double-layer fabric with longitudinal grooves according to claim 1 or 2, wherein three knuckles formed by the other warp binding yarns are arranged in parallel. The warp binding yarn that forms the weave fabric group is arranged at the end of the group, and the industrial two-type formed with longitudinal grooves according to any one of claims 1 to 6 Layer fabric.