US20210148015A1 - Industrial two-layer fabric - Google Patents

Industrial two-layer fabric Download PDF

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Publication number
US20210148015A1
US20210148015A1 US17/159,579 US202117159579A US2021148015A1 US 20210148015 A1 US20210148015 A1 US 20210148015A1 US 202117159579 A US202117159579 A US 202117159579A US 2021148015 A1 US2021148015 A1 US 2021148015A1
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Prior art keywords
warp
fabric
industrial
warps
layer fabric
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US17/159,579
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English (en)
Inventor
Ikuo Ueda
Shinya Murakami
Hideyuki Yanai
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Nippon Filcon Co Ltd
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Nippon Filcon Co Ltd
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Assigned to NIPPON FILCON CO., LTD. reassignment NIPPON FILCON CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MURAKAMI, SHINYA, UEDA, IKUO, YANAI, HIDEYUKI
Publication of US20210148015A1 publication Critical patent/US20210148015A1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
    • D03D15/46—Flat yarns, e.g. tapes or films
    • D03D2700/0111—

Definitions

  • the present invention relates to a new industrial two-layer fabric that has a thin net thickness, is excellent in rigidity, wear resistance, dewaterability, and mark suppression, and can be used in a high-speed paper machine.
  • the present invention relates to an industrial two-layer fabric that has a flat yarn structure due to the formation of an upper-surface-side fabric by a combination of a warp rib weave structure of two upper-surface-side warps and a flat warp and that further achieves slow dewatering and low water retention effects due to a warp binding arrangement.
  • the fabrics include fabrics for paper manufacturing, conveying belts, filter cloths, etc., and are each required to have fabric characteristics suitable for their application and usage environment.
  • the demand for fabrics for papermaking used in a papermaking process of, e.g., dewatering materials using the mesh of the fabrics is particularly strict.
  • fabrics that show excellent surface smoothness that prevents wire marks of the fabrics from easily transferred to paper that have dewaterability for sufficiently and uniformly dewatering excess water contained in the materials and rigidity and wear resistance that allow the fabrics to be suitably used even in a harsh environment, and that can maintain conditions necessary for producing better paper for a long period of time.
  • fiber supporting properties, improvement in yield in paper manufacturing, dimensional stability, running stability, etc. are required.
  • the demand for fabrics for papermaking has become even stricter.
  • the amount of water retained reduces the amount of water retained by industrial fabrics in their spaces during dewatering (hereinafter referred to as “the amount of water retained”). For example, by reducing the net thickness, the amount of water retained can be reduced. Therefore, the diameter of the warp is simply reduced to reduce the net thickness. However, in such a case, the mesh becomes coarse, the rigidity due to the mesh strength decreases, and an excessive mesh space is generated. As a result, the material does not stay on the fabric and falls off, causing a decrease in yield.
  • a layer of fibers (hereinafter referred to as “initial mat”) is formed on the fabric by dewatering when the material is discharged onto the fabric (hereinafter referred to as “initial dewatering”).
  • initial dewatering When the dewatering speed of the fabric is high, for example, the mesh of the fabric becomes clogged with the fibers, resulting in the formation of a strong initial mat.
  • a strong initial mat clogs the mesh of the fabric before the dewatering of the material is completed.
  • the subsequent dewatering becomes incomplete and causes poor dewatering, which is, e.g., the cause for the worsening of the texture of the paper. Therefore, the dewatering performance is unstable.
  • the dewatering speed of the fabric is determined by the influence of the surface of the fabric, the space inside thereof, etc.
  • an industrial fabric having a triple-woven structure in which the upper-surface-side fabric and the lower-surface-side fabric are bonded with a binding yarn has a high dewatering speed. Therefore, the dewatering speed is restrained by setting the weft density to be high in order to suppress the initial dewatering.
  • a strong initial mat is formed, a more significant decrease in dewaterability occurs.
  • fabrics having good dewaterability include industrial two-layer fabrics or the like in which dewatering holes are formed penetrating from the upper surface side to the lower surface side.
  • industrial two-layer fabrics are known that use warp binding yarns that are woven with upper-surface-side wefts and lower-surface-side wefts forming upper-surface-side warp structures and lower-surface-side warp structures.
  • Patent Document 1 shows a two-layer fabric using warp binding yarns.
  • Such a conventional technology represents a two-layer fabric in which a part of the warps functions as binding yarns that allow an upper-surface-side layer and a lower-surface-side layer to be interwoven, and the paired warp binding yarns complement the upper-surface-side warp structure and the lower-surface-side warp structure so as to form the respective surface structures, allowing the fabric to be excellent in surface properties and binding strength.
  • it is necessary to break knuckles at a part of the structures so as to achieve binding, and it is thus essential to complement the knuckles at such a part using another warp. It is known that since intersections appear continuously between adjacent warps, dewatering resistance occurs that is likely to cause marks on the paper at this time.
  • an industrial two-layer fabric in which a set consisting of an upper-surface-side warp and a warp binding yarn is arranged is shown in cited document 2.
  • a uniform structure is formed on the surface by combining upper-surface-side knuckles and the upper-surface-side warp structure of the warp binding yarn that weaves the upper and lower surfaces together.
  • the two warps work together to form the structure of a single warp on the surface, and there is thus no collapsing of the structure.
  • the structure of one or both of the warps must be collapsed, forming intersections when going back and forth between the upper and lower surface sides, and the warps, being a combination of two warps, are arranged as a single warp.
  • the warp binding yarn may block the mesh near the weaving of the upper-surface-side weft, and the dewaterability characteristics of the wire may be partially changed giving marks to the paper.
  • dewaterability is good since dewatering holes that completely penetrate from the upper-surface-side layer to the lower-surface-side layer are arranged on the entire surface.
  • an on-stack structure may be adopted in order to improve the dewaterability.
  • the surface space becomes excessively large. Since the spaces between the warps on the upper surface side become large while the spaces between the warps on the lower surface side become small, the control of the dewatering speed is not sufficient.
  • a purpose of the present invention is to provide an industrial two-layer fabric satisfying basic characteristics of a fabric such as rigidity, wear resistance, dewaterability, mark suppression, and low water retention for reducing the amount of water retained.
  • the present invention also provides a new industrial two-layer fabric that is compatible with a high-speed paper machine. That is, the correlation between dewaterability and water retention is an important factor for increasing the speed of industrial two-layer fabrics, and further, high yield is required by suppressing the loss of the materials. Therefore, a purpose of the present invention is to provide an industrial two-layer fabric that improves dewaterability and realizes low water retention by improving the opening on the upper and lower surface sides and internal space so as to, e.g., increase the dewatering amount while suppressing the initial dewatering.
  • a purpose of the present invention is to provide an industrial two-layer fabric whose dewaterability and water retention can be adjusted by changing the ratio between the upper-surface-side weft and the lower-surface-side weft.
  • An industrial two-layer fabric according to the present invention is characterized in that the upper-surface-side warps are arranged in a combination of two and that at least one warp of the combination of two warps has a first structure as a warp having a binding function and a second structure in which a flat yarn is used for an upper-surface-side warp, thereby realizing high dewaterability and low water retention while having rigidity. That is, the following features are employed in the present invention in order to solve the above problems.
  • An industrial two-layer fabric including an upper-surface-side fabric formed from upper-surface-side warps and upper-surface-side wefts, lower-surface-side warps, and lower-surface-side wefts, wherein the industrial two-layer fabric has at least a first structure and a second structure in a weave repeat thereof, the first structure being formed by a combination of two upper-surface-side warps and a single lower-surface-side warp, the second structure being formed by a single upper-surface-side warp and a single lower-surface-side warp, the first structure and the second structure being disposed adjacent to each other, the upper-surface-side warps in the first structure being formed by a warp binding yarn having the function of binding an upper-surface-side fabric and a lower-surface-side fabric, the combination of two upper-surface-side warps forming the first structure being disposed adjacent to each other and constituting a partial rib weave
  • the rib weave means that two upper-surface-side warps are disposed adjacent to each other, and both warps pass above and below the upper-surface-side weft to form knuckles on the surface of the fabric.
  • the two upper-surface-side warps are binding yarns, and since the warps complement each other and exert a binding function, there are some parts that are not rib-woven.
  • the flat yarns in the present invention mean yarns having a shape in which the cross-sectional shape is not circular and the upper and lower surfaces are substantially flat.
  • the flat yarns according to the present invention include not only those whose cross-sectional shape is rectangular but also those whose cross-sectional shape is elliptical; however, those having a width that is larger than the vertical diameter are used.
  • the preferred aspect ratio is 1.1 to 2.0.
  • the diameter of the yarns constituting a fabric is conventionally reduced to suppress the net thickness.
  • the warp space on the upper surface side is larger than that on the lower surface side. Therefore, it is difficult to suppress dewatering and reduce net thickness at the same time.
  • the present invention since the net thickness is reduced by the combination of two thin warps and flat warps, the dewatering speed can be controlled. Further, the present invention has arrangement in which a weave structure is formed by two warps and is bound.
  • At least one of the two warps has both a weave structure arrangement and a binding structure arrangement, and the other warp of the pair forming the upper surface at that portion can achieve the effect of minimizing the collapse of the weave structure at the binding part.
  • the yarns are described to be arranged vertically, since the upper-surface-side warp is woven only with the upper-surface-side weft and the warp binding yarn is woven with both the upper-surface-side weft and the lower-surface-side weft, the yarns are not arranged in such a way the yarns completely overlap with each other and are actually arranged in such a way the yarns are not aligned. Further, in addition to the set of warp binding yarns, a set of upper and lower warps formed of an upper-surface-side warp to be woven with an upper-surface-side weft and a lower-surface-side warp to be woven with a lower-surface-side weft may be arranged.
  • the configuration of the industrial two-layer fabric according to the present invention advantages of satisfying the basic characteristics of a fabric, such as rigidity, wear resistance, dewaterability, mark suppression, and low water retention for reducing the amount of water retained can be obtained. Further, by employing the configuration of the industrial two-layer fabric according to the present invention, it is possible to provide a new industrial two-layer fabric that is compatible with a high-speed paper machine. In the present invention, by combining a warp rib weave with a flat warp, slow dewatering and low water retention due to a warp binding arrangement having a fabric of a flat yarn structure can be realized, and therefore excellent advantages of greatly improving dewaterability compared to that of a conventional fabric and having low water retention can be achieved.
  • the warp space ratio of the upper-surface-side fabric and the warp space ratio of the lower-surface-side fabric can be made to be about the same.
  • the difference in space density can be arbitrarily set, and the effect of allowing for the adjustment of the dewaterability and water retention can be obtained by changing the ratio between the upper-surface-side weft and the lower-surface-side weft.
  • FIGS. 1A-1C are conceptual diagrams for explaining the operation and effect of a fabric having the knuckle shapes and heights of a warp and a weft that form the present invention.
  • FIG. 1A is a conceptual diagram of a conventional warp and weft.
  • FIGS. 1B and 1C are conceptual diagrams of the warp and the weft that form the present invention.
  • FIG. 2 is a design diagram showing a weave repeat according to the first embodiment of the present invention
  • FIG. 3 is a partial side layout view showing a state of warps as viewed from the side according to the first embodiment of the present invention
  • FIG. 4 is a design diagram showing a weave repeat according to the second embodiment of the present invention.
  • FIG. 5 is a partial side layout view showing a state of warps as viewed from the side according to the second embodiment of the present invention.
  • FIG. 6 is a design diagram showing a weave repeat according to the third embodiment of the present invention.
  • FIG. 7 is a partial side layout view showing a state of warps as viewed from the side according to the third embodiment of the present invention.
  • FIG. 8 is a design diagram showing a weave repeat according to the fourth embodiment of the present invention.
  • FIG. 9 is a partial side layout view showing a state of warps as viewed from the side according to the fourth embodiment of the present invention.
  • the industrial two-layer fabric according to the present invention includes an upper-surface-side fabric formed from upper-surface-side warps and upper-surface-side wefts, lower-surface-side warps, and lower-surface-side wefts, and the industrial two-layer fabric has at least a first structure and a second structure in a weave repeat thereof, the first structure being formed by a combination of two upper-surface-side warps and a single lower-surface-side warp, the second structure being formed by a single upper-surface-side warp and a single lower-surface-side warp, the first structure and the second structure being disposed adjacent to each other, the upper-surface-side warps in the first structure being formed by a warp binding yarn having the function of binding an upper-surface-side fabric and a lower-surface-side fabric, the combination of two upper-surface-side war
  • the yarn used in the present invention may be selected depending on the intended use. For example, in addition to monofilaments, multifilaments, spun yarn, processed yarn generally referred to as textured yarn, bulky yarn, stretch yarn, etc., on which crimping, bulk processing, or the like has been performed, or yarn into which these yarns are combined by, e.g., twisting can be used. Further, regarding the cross-sectional shape of yarn other than a flat warp, not only those of a circular shape but also a star-shaped, rectangular, or polygonal yarn or an elliptical yarn, a hollow yarn, or the like can be used.
  • the material of the yarn can be freely selected, and polyester, polyamide, polyphenylene sulfide, polyvinylidene fluoride, polypro, aramid, polyetheretherketone, polyethylene naphthalate, polytetrafluoroethylene, cotton, wool, metal, etc., can be used.
  • a yarn may be used that is obtained by blending or including various substances in a copolymer or in these materials depending on the purpose.
  • a polyester monofilament is preferably used that allows the upper-surface-side warps, the lower-surface-side warps, the lower warp binding yarns, and the upper-surface-side wefts to have rigidity and is excellent in dimensional stability.
  • polyester monofilaments and polyamide monofilaments can be mixed-woven by, e.g., alternately arranging the polyester monofilaments and the polyamide monofilaments.
  • FIGS. 1A-1C are conceptual diagrams for explaining the knuckle shape and height of a warp that forms the present invention.
  • FIG. 1A is a conceptual diagram showing a conventional interwoven portion of a warp and a weft.
  • FIG. 1A is a conceptual diagram that shows a knuckle shape and a height using a warp and a weft having diameters in a fabric. Further, FIG.
  • FIG. 1B is a diagram in which a combination of two upper-surface-side warps 1 t and 2 t in the first structure is arranged under an upper-surface-side weft 1 ′ u .
  • FIG. 1C is a diagram in which a flat warp 3 h in the second structure is arranged under the upper-surface-side weft 1 ′ u .
  • the warps used for the first structure in the present invention is characterized in that the upper-surface-side warp has a smaller diameter than the lower-surface-side warp. Therefore, as shown in FIGS.
  • the vertical lengths L 2 and L 3 of respective knuckle shapes formed by the upper-surface-side warps 1 t and 2 t and by the flat warp 3 h are found to be smaller than the vertical length L 1 of a knuckle shape formed by a yarn of a conventional diameter. Therefore, since the industrial two-layer fabric according to the present invention can form a flat knuckle shape on the upper surface structure side as compared with conventional industrial two-layer fabrics, a fabric having a reduced net thickness can be obtained. Further, since the knuckle shape of a weft woven into the combination of two warps or the flat warp becomes flattened, surface smoothness and fiber supportability can be improved.
  • the present invention has a structure in which a weave structure is formed by two warps and is bound. Therefore, for a binding yarn, one of the two warps in a set has both a structure arrangement and a binding structure arrangement, and the other yarn forming the upper surface side allows the collapse of the weave structure at the binding part to be minimized.
  • the respective diameters of the upper-surface-side warps can be all set to be the same.
  • the respective diameters of the lower-surface-side warps may be all set to be the same.
  • the diameter of the lower-surface-side warps may be set to be 130 to 300% of the diameter of the upper-surface-side warps.
  • the binding yarn can be formed from a yarn that is thinner than a warp binding yarn in an industrial two-layer fabric using a conventional warp binding yarn. Therefore, the occurrence of partial dewatering unevenness can be minimized.
  • the diameter of the yarns forming a fabric is conventionally controlled to suppress the net thickness.
  • the warp space on the upper surface side is larger than that on the lower surface side. Therefore, it is difficult to suppress dewatering and reduce net thickness at the same time.
  • the dewatering speed can be adjusted while maintaining the net thickness by combining two thin warps and a flat warp.
  • the respective diameters of the two upper-surface-side warps forming the first structure may be smaller than the diameter of the single upper-surface-side warp forming the second structure.
  • the force applied to the weft when forming a knuckle can be made to be about the same as that in the case of a single upper-surface-side warp, and the surface smoothness, fiber supportability, etc., can thus be improved.
  • the diameter can be adjusted by selecting the diameter in accordance with the wire, the diameter and the wire can be appropriately selected.
  • an on-stack arrangement may be employed.
  • the on-stack arrangement By using the on-stack arrangement, high dewaterability can be obtained, and an excessive difference in opening between the upper surface side and the lower surface side can be suppressed by appropriately closing a vertical opening with two yarns since the surface structure is a rib weave. Therefore, the dewatering speed can be controlled.
  • FIGS. 2 to 9 are design diagrams and partial side layout views showing examples pertaining to the industrial two-layer fabric of the present invention.
  • a design drawing shows the smallest repeating unit of a fabric structure, and this weave repeat is connected vertically and horizontally to form the structure of the entire fabric.
  • warps are indicated by Arabic numerals, for example, 1 , 2 , 3 . . . .
  • Wefts are indicated by Arabic numerals with dashes, for example, 1 ′, 2 ′, 3 ′ . . . .
  • a binding yarn is an upper-surface-side warp that constitutes the first structure.
  • a cross mark indicates that one upper-surface-side warp that constitutes the first structure is located above an upper-surface-side weft
  • a triangle mark indicates that an upper-surface-side warp is located under a lower-surface-side weft
  • a circle mark indicates that a lower-surface-side warp is located under a lower-surface-side weft.
  • An upper-surface-side warp and a lower-surface-side warp, and an upper-surface-side weft and a lower-surface-side weft with the same number are arranged vertically.
  • yarns are arranged so as to be exactly overlapped vertically, or a lower-surface-side warp is arranged at the midpoint between two upper-surface-side warps. This is for the convenience of the drawings, and the yarns may be arranged with a slight deviation in the actual fabric.
  • FIG. 2 is a design diagram of the first embodiment pertaining to the industrial two-layer fabric of the present invention.
  • FIG. 3 is a partial side layout view of the first embodiment pertaining to the industrial two-layer fabric of the present invention.
  • the first structure according to the first embodiment is composed of a combination of two upper-surface-side warps and a single lower-surface-side warp.
  • the upper-surface-side warps in the first structure are formed by warp binding yarns having a function of binding the upper-surface-side fabric and the lower-surface-side fabric.
  • the combination of two upper-surface-side warps forming the first structure are disposed adjacent to each other and forms a partial rib weave on the surface of the upper-surface-side fabric.
  • the second structure is composed of a single upper-surface-side warp and a single lower-surface-side warp.
  • the upper-surface-side warp in the second structure is formed by a flat warp.
  • the first structures 1 , 3 , and 5 and the second structures 2 , 4 , and 6 are formed being adjacent to one another and arranged alternately.
  • the diameter of the lower-surface-side warp is formed to be larger than the diameter of the upper-surface-side warp forming the first structure.
  • a structure is formed where one upper-surface-side warp 1 in the first structure passes under a lower-surface-side weft 1 ′ and passes above upper-surface-side wefts 5 ′, 7 ′, 9 ′, 11 ′, 13 ′, 15 ′, 17 ′, 19 ′, and 21 ′.
  • the combination of two upper-surface-side warps 1 in the first structure forms a partial rib weave at the upper-surface-side wefts 5 ′, 7 ′, 9 ′, 17 ′, 19 ′, and 21 ′ on the surface of the upper-surface-side fabric.
  • an upper-surface-side warp 2 serving as a flat warp in the second structure passes above upper-surface-side wefts 2 ′, 4 ′, 6 ′, 8 ′, 10 ′, 12 ′, 14 ′, 16 ′, 18 ′, 20 ′, 22 ′, and 24 ′ so as to form a plain weave.
  • a lower-surface-side warp 2 in the second structure passes under lower-surface-side wefts 3 ′ and 15 ′.
  • the first structure in the industrial two-layer fabric according to the first embodiment can form a pseudo-flat yarn by forming a rib weave by arranging two thin upper-surface-side warps in parallel on a part of the surface of the upper-surface-side fabric. Furthermore, by arranging the flat warp in the second structure adjacent to the first structure, suitable rigidity and elongation resistance can be ensured while suppressing the thickness, and a fabric excellent in wear resistance, suitable dewaterability, low water retention, and surface smoothness can be provided, in the same way as in a fabric in which only flat yarns are used to form a surface structure. Further, by employing the fabric structure according to the first embodiment, it is possible to reduce the mesh size while suppressing the thickness of the fabric. Therefore, the dewaterability and the water retention property can be adjusted by selecting the diameter of the yarn. Furthermore, since the knuckle shape of the weft can be flattened by two rib weave structures, the surface smoothness and the fiber supportability can be improved.
  • FIG. 4 is a design diagram of the first embodiment pertaining to the industrial two-layer fabric of the present invention.
  • FIG. 5 is a partial side layout view of the second embodiment pertaining to the industrial two-layer fabric of the present invention.
  • the first structure according to the second embodiment is composed of a combination of two upper-surface-side warps and a single lower-surface-side warp.
  • the upper-surface-side warps in the first structure are formed by warp binding yarns having a function of binding the upper-surface-side fabric and the lower-surface-side fabric.
  • the combination of two upper-surface-side warps forming the first structure are disposed adjacent to each other and forms a partial rib weave on the surface of the upper-surface-side fabric.
  • the second structure is composed of a single upper-surface-side warp and a single lower-surface-side warp.
  • the upper-surface-side warp in the second structure is formed by a flat warp.
  • the first structures 1 , 3 , and 5 and the second structures 2 , 4 , and 6 are formed being adjacent to one another and arranged alternately.
  • the diameter of the lower-surface-side warp is formed to be larger than the diameter of the upper-surface-side warp forming the first structure.
  • a structure is formed where one upper-surface-side warp 1 in the first structure passes above upper-surface-side wefts 1 ′, 3 ′, 5 ′, and 7 ′, passes under a lower-surface-side weft 10 ′, and further pass above upper-surface-side wefts 13 ′, 15 ′, and 17 ′. Further, a structure is formed where the other upper-surface-side warp 1 in the first structure passes under a lower-surface-side weft 1 ′ and passes above upper-surface-side wefts 3 ′, 5 ′, 7 ′, 9 ′, 11 ′, 13 ′, 15 ′, and 17 ′.
  • the lower-surface-side warp 1 passes under the lower-surface-side wefts 1 ′ and 10 ′. Therefore, as is clear from FIG. 5 , the combination of two upper-surface-side warps 1 in the first structure forms a partial rib weave at the upper-surface-side wefts 3 ′, 5 ′, 7 ′, 13 ′, 15 ′, and 17 ′ on the surface of the upper-surface-side fabric.
  • an upper-surface-side warp 2 serving as a flat warp in the second structure passes above upper-surface-side wefts 2 ′, 4 ′, 6 ′, 8 ′, 10 ′, 12 ′, 14 ′, 16 ′, and 18 ′ so as to form a plain weave.
  • a lower-surface-side warp 2 in the second structure passes under lower-surface-side wefts 2 ′ and 11 ′.
  • the first structure in the industrial two-layer fabric according to the second embodiment can form a pseudo-flat yarn by forming a rib weave by arranging two thin upper-surface-side warps in parallel on a part of the surface of the upper-surface-side fabric. Furthermore, by arranging the flat warp in the second structure adjacent to the first structure, suitable rigidity and elongation resistance can be ensured while suppressing the thickness, and a fabric excellent in wear resistance, suitable dewaterability, and surface smoothness can be provided, in the same way as in a fabric in which only flat yarns are used to form a surface structure. Further, by employing the fabric structure according to the second embodiment, it is possible to reduce the mesh size while suppressing the thickness of the fabric. Therefore, the dewatering characteristics can be adjusted by selecting the diameter of the yarn. Furthermore, since the knuckle shape of the weft can be flattened by two rib weave structures, the surface smoothness and the fiber supportability can be improved.
  • FIG. 6 is a design diagram of the third embodiment pertaining to the industrial two-layer fabric of the present invention.
  • FIG. 7 is a partial side layout view of the third embodiment pertaining to the industrial two-layer fabric of the present invention.
  • the first structure according to the third embodiment is composed of a combination of two upper-surface-side warps and a single lower-surface-side warp.
  • the upper-surface-side warps in the first structure are formed by warp binding yarns having a function of binding the upper-surface-side fabric and the lower-surface-side fabric.
  • the combination of two upper-surface-side warps forming the first structure are disposed adjacent to each other and forms a partial rib weave on the surface of the upper-surface-side fabric.
  • the second structure is composed of a single upper-surface-side warp and a single lower-surface-side warp.
  • the upper-surface-side warp in the second structure is formed by a flat warp.
  • the first structures 1 , 3 , and 5 and the second structures 2 , 4 , and 6 are formed being disposed adjacent to one another.
  • the diameter of the lower-surface-side warp is formed to be larger than the diameter of the upper-surface-side warp forming the first structure.
  • a structure is formed where one upper-surface-side warp 1 in the first structure passes above upper-surface-side wefts 1 ′, 3 ′, 5 ′, and 7 ′, passes under a lower-surface-side weft 10 ′, and further pass above upper-surface-side wefts 13 ′, 15 ′, and 17 ′.
  • the lower-surface-side warp 1 passes under the lower-surface-side wefts 1 ′ and 10 ′.
  • a structure is formed where the other upper-surface-side warp 1 in the first structure passes under a lower-surface-side weft 1 ′ and passes above upper-surface-side wefts 5 ′, 7 ′, 9 ′, 11 ′, 13 ′, and 15 ′. Therefore, as is clear from FIG. 7 , the combination of two upper-surface-side warps 1 in the first structure forms a partial rib weave at the upper-surface-side wefts 5 ′, 7 ′, 13 ′, and 15 ′ on the surface of the upper-surface-side fabric.
  • an upper-surface-side warp 2 serving as a flat warp in the second structure passes above upper-surface-side wefts 2 ′, 4 ′, 6 ′, 8 ′, 10 ′, 12 ′, 14 ′, 16 ′, and 18 ′ so as to form a plain weave.
  • a lower-surface-side warp 2 in the second structure passes under lower-surface-side wefts 2 ′ and 11 ′.
  • the first structure in the industrial two-layer fabric according to the third embodiment can form a pseudo-flat yarn by forming a rib weave by arranging two thin upper-surface-side warps in parallel on a part of the surface of the upper-surface-side fabric. Furthermore, by arranging the flat warp in the second structure adjacent to the first structure, suitable rigidity and elongation resistance can be ensured while suppressing the thickness, and a fabric excellent in wear resistance, suitable dewaterability, and surface smoothness can be provided, in the same way as in a fabric in which only flat yarns are used to form a surface structure. Further, by employing the fabric structure according to the third embodiment, it is possible to reduce the mesh size while suppressing the thickness of the fabric. Therefore, the dewatering characteristics can be adjusted by selecting the diameter of the yarn. Furthermore, since the knuckle shape of the weft can be flattened by two rib weave structures, the surface smoothness and the fiber supportability can be improved.
  • FIG. 8 is a design diagram of the fourth embodiment pertaining to the industrial two-layer fabric of the present invention.
  • FIG. 9 is a partial side layout view of the fourth embodiment pertaining to the industrial two-layer fabric of the present invention.
  • the first structure according to the fourth embodiment is composed of a combination of two upper-surface-side warps and a single lower-surface-side warp.
  • the upper-surface-side warps in the first structure are formed by warp binding yarns having a function of binding the upper-surface-side fabric and the lower-surface-side fabric.
  • the combination of two upper-surface-side warps forming the first structure are disposed adjacent to each other and forms a partial rib weave on the surface of the upper-surface-side fabric.
  • the second structure is composed of a single upper-surface-side warp and a single lower-surface-side warp.
  • the upper-surface-side warp in the second structure is formed by a flat warp.
  • the first structure 1 and the second structures 2 and 8 are formed being disposed adjacent to each other, and the first structure 5 and the second structures 4 and 6 are formed being disposed adjacent to each other.
  • the diameter of the lower-surface-side warp is formed to be larger than the diameter of the upper-surface-side warp forming the first structure.
  • a structure is formed where one upper-surface-side warp 1 in the first structure passes above upper-surface-side wefts 1 ′, 3 ′, 5 ′, 7 ′, 9 ′, and 11 ′, passes under a lower-surface-side weft 13 ′, and further pass above upper-surface-side wefts 15 ′, and 17 ′.
  • the lower-surface-side warp 1 passes under the lower-surface-side wefts 1 ′, 7 ′, and 13 ′.
  • a structure is formed where the other upper-surface-side warp 1 in the first structure passes under a lower-surface-side weft 1 ′ and passes above upper-surface-side wefts 3 ′, 5 ′, 7 ′, 9 ′, 11 ′, 13 ′, 15 ′, and 17 ′. Therefore, as is clear from FIG. 9 , the combination of two upper-surface-side warps 1 in the first structure forms a partial rib weave at the upper-surface-side wefts 3 ′, 5 ′, 7 ′, 9 ′, 11 ′, 15 ′, and 17 ′ on the surface of the upper-surface-side fabric.
  • an upper-surface-side warp 2 serving as a flat warp in the second structure passes above upper-surface-side wefts 2 ′, 4 ′, 6 ′, 8 ′, 10 ′, 12 ′, 14 ′, 16 ′, and 18 ′ so as to form a plain weave.
  • a lower-surface-side warp 2 in the second structure passes under lower-surface-side wefts 2 ′, 8 ′, and 14 ′.
  • an upper-surface-side warp 3 serving as a flat warp in the second structure passes above upper-surface-side wefts 1 ′, 3 ′, 5 ′, 7 ′, 9 ′, 11 ′, 13 ′, 15 ′, and 17 ′ so as to form a plain weave.
  • a lower-surface-side warp 3 in the second structure passes under lower-surface-side wefts 4 ′, 10 ′, and 16 ′.
  • an upper-surface-side warp 4 serving as a flat warp in the second structure passes above upper-surface-side wefts 2 ′, 4 ′, 6 ′, 8 ′, 10 ′, 12 ′, 14 ′, 16 ′, and 18 ′ so as to form a plain weave.
  • a lower-surface-side warp 4 in the second structure passes under lower-surface-side wefts 5 ′, 11 ′, and 17 ′.
  • the first structure in an industrial two-layer fabric according to the fourth embodiment can form a pseudo-flat yarn by forming a rib weave by arranging two thin upper-surface-side warps in parallel on a part of the surface of the upper-surface-side fabric. Furthermore, by arranging the flat warp in the second structure adjacent to the first structure, suitable rigidity and elongation resistance can be ensured while suppressing the thickness, and a fabric excellent in wear resistance, suitable dewaterability, and surface smoothness can be provided, in the same way as in a fabric in which only flat yarns are used to form a surface structure. Further, by employing the fabric structure according to the fourth embodiment, it is possible to reduce the mesh size while suppressing the thickness of the fabric. Therefore, the dewatering characteristics can be adjusted by selecting the diameter of the yarn. Furthermore, since the knuckle shape of the weft can be flattened by two rib weave structures, the surface smoothness and the fiber supportability can be improved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
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US17/159,579 2018-07-31 2021-01-27 Industrial two-layer fabric Abandoned US20210148015A1 (en)

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PCT/JP2019/027881 WO2020026785A1 (ja) 2018-07-31 2019-07-16 工業用二層織物

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US11286588B2 (en) * 2018-02-15 2022-03-29 Nippon Filcon Co., Ltd. Industrial two-layer fabric

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JP3900029B2 (ja) 2002-07-05 2007-04-04 日本フイルコン株式会社 工業用二層織物
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US11286588B2 (en) * 2018-02-15 2022-03-29 Nippon Filcon Co., Ltd. Industrial two-layer fabric

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JP2020020054A (ja) 2020-02-06
WO2020026785A1 (ja) 2020-02-06

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