JP2014077220A - Felt for papermaking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make production easy in felt for papermaking having a base body that ground fabric is wound and laminated.SOLUTION: Felt for papermaking 1, 20, 30, 40, and 50 comprise base bodies 3 formed annular and batt fiber layers 4 coupled with the base bodies by needling. The base body 3 comprises a first wound laminate 3 that ground fabric 2 having multiple warp 11 extending in a length direction and multiple weft 12 extending in a cross direction is wound and laminated in the length direction. End parts 8 and 9 in the length direction of the ground fabric is arranged on a surface of an adjacent layer 10 which is another layer adjacent to the ground fabric. Some pieces of the warp comprising the end parts are sewed into the adjacent layer.

Description

  The present invention relates to a papermaking felt used in a press part that squeezes moisture from a wet paper of a paper machine, and more specifically, a substrate including a wound laminate in which a base fabric is wound and laminated, and the substrate. It is related with the felt for papermaking which has the batt fiber layer made.

  In a press part of a papermaking machine, a papermaking felt (press felt) including a base fabric and a batt fiber layer bonded to the base fabric is used. Papermaking felts are required to have a smooth paper-making surface in order to smooth the surface of the wet paper, and high water squeezing is required to efficiently squeeze out the wet paper. From this point of view, a base is formed by winding and laminating a banded base fabric in which warps and wefts are woven together, and a bat fiber layer is formed on the outer surface (paper surface) and inner surface (running surface) of the substrate. Are bonded by needling (for example, Patent Document 1). In such a papermaking felt, the end in the length direction of the base fabric forms a step on the outer surface of the base, and this step forms a mark on the wet paper (a mark transferred to the wet paper by the unevenness). There is a risk of causing it. In the felt for papermaking which concerns on patent document 1, the treatment which pulls out the weft arrange | positioned at the length direction edge part of a base fabric, makes thickness thin, and blunts a step part is performed.

Japanese Patent No. 3045895

  However, since the felt for papermaking according to Patent Document 1 is not fixed only by overlapping the end portion in the length direction of the base fabric on the adjacent other layer, the papermaking surface or running surface wear due to continuous use, etc. There is a risk that the end portion may be displaced or twisted due to deterioration. Moreover, it is difficult to determine the relative positions of the end portions on the papermaking surface side and the running surface side, and it is difficult to set the thickness, air permeability, water permeability, and the like of the portions where the both ends are arranged to desired values.

  The present invention has been made in view of the above problems, and in a papermaking felt having a base formed by winding and laminating a base fabric, both ends in the length direction are fixed to the other layers of the base fabric. This is the issue.

  In order to solve the above-mentioned problems, the present invention provides a papermaking felt (1, 20, 30) having a base (3) formed in an annular shape and a bat fiber layer (4) bonded to the base by needling. 40, 50), wherein the base is wound in the length direction with a base fabric (2) having a plurality of warp yarns (11) extending in the length direction and a plurality of weft yarns (12) extending in the width direction. The first winding laminate (3) laminated in a number of times, and the end portions (8, 9) in the length direction of the base fabric are on the surface of the adjacent layer (10) which is another layer adjacent to the base fabric. Some of the warps constituting the end portion are sewn into the adjacent layer.

  According to this configuration, since the base body can be maintained in an annular shape before needling only by joining two places at both ends in the length direction of the base fabric regardless of the number of layers of the base body, It can be reduced and manufacturing is facilitated.

  In the above invention, the plurality of warp yarns constituting the end portion are short end warp yarns (11a) having a short projecting length from the side end weft yarns arranged closest to the end portion among the weft yarns. The long end warp (11b) has a longer protruding length than the short end warp, and the long end warp is preferably sewn into the adjacent layer.

  According to this configuration, it is possible to increase the bonding strength between the end portion and the adjacent layer while suppressing the change in the porosity of the portion where the end portion in the length direction of the base fabric is disposed.

  In the above invention, the short end warp (16) disposed on both sides of the long end warp (15) that has passed the side opposite to the adjacent layer of the side end weft is the side end weft of the side end weft. It is preferable to arrange so as to pass through the side opposite to the adjacent layer.

  According to this configuration, the short end warp arranged on both sides of the long end warp that has passed the side opposite to the adjacent layer of the side end weft can extend along the length direction. As a result, the plurality of short end warps form a homogeneous surface, and the surface of the papermaking felt becomes smooth. If the short-end warp arranged on both sides of the long-end warp that has passed the side opposite to the adjacent layer of the side-end weft passes the adjacent layer side of the side-end weft, the length sewn into the adjacent layer Due to the side end wefts pulled by the end warp, the short end warp arranged on both sides of the long end warp is pushed in a direction away from the long end warp, and the uniform arrangement of the short end warp may be disturbed.

  In the above invention, it is preferable that a ratio of the number of the long end warps to the total number of the plurality of warps constituting the end portion is in a range of 9.1% to 20%.

  According to this configuration, it is possible to increase the bonding strength between the end portion and the adjacent layer while suppressing changes in air permeability and water permeability of the portion where the end portion in the length direction of the base fabric is disposed.

  In the above invention, it is preferable that the long end warp is sewn into 15 to 50 wefts of the adjacent layer per one. Here, the number of long end warps sewn into the weft refers to the number of one long end warp passing through the papermaking surface side or the running surface side of the weft yarn.

  According to this configuration, the bond strength between the long end warp and the adjacent layer can be set within a suitable range.

  In the above invention, it is preferable that the long end warp extends in the length direction, is disposed between the adjacent warps of the adjacent layer, and is sewn into the wefts of the adjacent layer.

  According to this configuration, since the long terminal warp and the warp constituting the adjacent layer do not overlap in the thickness direction of the substrate, the surface of the substrate becomes smooth.

  Further, in the above invention, the base is a second wound laminate (31) in which a base fabric having ends in the length direction is wound and laminated in the length direction on the papermaking surface side of the first wound laminate. You may have.

  According to this configuration, since the base body is composed of the first and second wound laminates, the material, form, and woven structure of the warp and weft yarns are changed between the first and second wound laminates. Thus, the characteristics of the substrate can be changed.

  In the above invention, an end (34) on the first winding laminate side of the second winding laminate is disposed on a surface of the first winding laminate, and the second winding laminate is provided. Some of the plurality of warps constituting the end of the body on the first wound laminate side may be sewn into the base fabric constituting the first wound laminate.

  According to this structure, the shift | offset | difference between a 1st and 2nd winding laminated body can be suppressed.

  In the above invention, the base body may have an endless base fabric (51) woven endlessly in the length direction on the papermaking surface side of the first wound laminate.

  According to this structure, since the edge part arrange | positioned at the papermaking surface side of a 1st winding laminated body is covered with an endless base fabric, a papermaking surface becomes smoother.

  According to the above configuration, in the papermaking felt having the base formed by winding and laminating the base fabric, both end portions in the length direction are fixed to the other layers of the base fabric. As a result, the displacement and twisting of both ends in the length direction of the base fabric are suppressed, and the tensile strength in the length direction of the papermaking felt is improved. In addition, by fixing the both ends in the length direction of the base fabric, the thickness, breathability, water permeability, etc. of the portion where the both ends are arranged can be accurately set to predetermined values, resulting from both ends. Marks can also be suppressed.

Schematic cross-sectional view of a papermaking felt according to the first embodiment The top view which shows the edge part of the base fabric which concerns on 1st Embodiment III-III sectional view of FIG. The top view which shows the joint structure of a papermaking surface side edge part and an adjacent layer VV sectional view of FIG. Schematic sectional view of a papermaking felt according to a second embodiment Schematic sectional view of a papermaking felt according to a third embodiment Schematic sectional view of a papermaking felt according to a fourth embodiment Schematic sectional view of a papermaking felt according to a fifth embodiment

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A papermaking felt 1 according to the following embodiment is used for paper transport and pressure dehydration in a press part of a papermaking machine.

(First embodiment)
As shown in FIG. 1, the felt 1 for papermaking which concerns on 1st Embodiment is the base | substrate (endlessly formed by winding and laminating | stacking the base fabric 2 which is the end in the length direction around the axis line parallel to the width direction ( (First laminate) 3 and a batt fiber layer 4 bonded to the base 3. The inner peripheral surface of the papermaking felt 1 is referred to as a running surface 6 (surface opposite to the wet paper surface), and the outer peripheral surface is referred to as papermaking surface 7 (wet paper surface). Of both ends in the length direction of the base fabric 2, the end disposed on the papermaking surface side of the base 3 is referred to as a papermaking surface side end 8, and the end disposed on the traveling surface side of the base 3 is the traveling surface side end. Nine. The papermaking surface side end portion 8 and the traveling surface side end portion 9 are respectively disposed on the surface on the papermaking surface side and the traveling surface side of the adjacent layer (intermediate layer) 10 that is another adjacent layer of the base fabric 2. The base body 3 of this embodiment is wound and laminated so that the base fabric 2 is mostly two layers. A part of the papermaking surface side end portion 8 and the running surface side end portion 9 are overlapped with each other in the thickness direction via a single layer of the base fabric 2.

  As shown in FIG. 2, the base fabric 2 is a woven fabric in which a plurality of warps 11 extending in the length direction and a plurality of wefts 12 extending in the width direction orthogonal to the length direction are interwoven. For the warp yarn 11 and the weft yarn 12, known yarns such as monofilaments, multifilaments, core-sheath fibers, and twisted yarns can be applied, and the material thereof is, for example, polyamide, polyester, polyethylene, polypropylene, polyvinyl chloride, or the like. It's okay.

  In the present embodiment, the base fabric 2 has a single-woven weave structure. In the flat structure, after an arbitrary warp 11 straddles an arbitrary weft 12, the next weft 12 is submerged, and after a warp adjacent to the arbitrary warp 11 has submerged the arbitrary weft 12, the next weft It has a repeating unit woven so as to straddle twelve. In another embodiment, any structure can be applied to the woven structure of the base fabric 2. For example, the base fabric 2 may be a double weave in which the warp yarns 11 are arranged in two upper and lower layers instead of a single weave. Moreover, the base fabric 2 may have arbitrary woven structures, such as 1/3 structure, 2/2 structure, and 3/1 structure. Here, the number before “/” indicates the number of warps 11 straddling the weft 12 (continuously passes the papermaking side of the weft 12), and the number after “/” indicates that the warp 11 is a weft. 12 (subsequently passing the running surface side of the weft 12). For example, the warp 3/1 structure is a structure in which the warp 11 passes continuously on the paper surface side of the three wefts 12 and then passes on the traveling surface side of the one weft 12.

  As shown in FIGS. 1 and 2, at the papermaking surface side end 8 and the traveling surface side end 9, the warp yarn 11 extends outwardly beyond the side edge weft 12a arranged on the most end side. . The warp 11 constituting the papermaking surface side end 8 and the running surface side end 9 has a short terminal warp 11a having a relatively short protruding length from the side end weft 12a and a short protruding length from the side end weft 12a. A long terminal warp 11b longer than the terminal warp 11a. The long end warp 11b is set so that the protruding length from the side end weft 12a can be sewn into the weft 12 of the adjacent layer 10 in the range of 3 cm to 10 cm. The ratio of the number of long end warps 11b to the number of all warps 11 (short end warp 11a and long end warp 11b) is in the range of 9.1% to 20% (that is, 1 per 11 warp 11). The ratio of the ratio of one long end warp 11b to the ratio of one long end warp 11b per five warps 11). The long end warps 11b are preferably dispersed so as to be substantially equidistant in the width direction. In the present embodiment, a structure in which one long terminal warp 11b is arranged in the width direction and then four short terminal warps 11a are continuously arranged is repeated.

  Further, the long end warp yarn 11b is arranged so that the one passing through the paper making surface side of the side end weft yarn 12a and the one passing through the running surface side of the side end weft yarn 12a appear alternately in the width direction. Is preferred. The short end warp 11a has a uniform protruding length from the side end weft 12a and is set in the range of 0.2 cm to 2.0 cm.

  As shown in FIG. 3, among the long end warps 11b of the papermaking surface side end 8, the short end warps 16 arranged on both sides of the long end warps 15 passing through the papermaking surface side of the side end wefts 12a are The end wefts 12a are disposed so as to pass through the papermaking surface side (that is, the side opposite to the adjacent layer 10). That is, the short end warp 11a arranged on both sides of the long end warp 11b passing through the paper-making surface side of the side end weft 12a has a deformed helical structure. Similarly, among the long end warps 11b of the running surface side end 9, the short end warps 11a arranged on both sides of the long end warp 11b passing the running surface side of the side end weft 12a are the side end wefts 12a. It arrange | positions so that a running surface side (namely, side opposite to the adjacent layer 10) may be passed.

  As shown in FIG. 1, the side edge weft 12a of the papermaking surface side end 8 and the side edge weft 12a of the traveling surface side end 9 are separated from each other in the length direction of the base 3, and the papermaking surface side edge 8 and the traveling surface are separated. The portion located on the center side of the base fabric 2 in the length direction from the side edge weft 12 a of the surface side end portion 9 does not overlap in the thickness direction of the base 3. On the other hand, the short end warp 11a of the papermaking surface side end 8 and the short end warp 11a of the running surface side end 9 are arranged so as to overlap each other via the adjacent layer 10 in the thickness direction of the substrate 3. .

  As shown in FIGS. 4 and 5, the short end warps 11 a and the long end warps 11 b of the papermaking surface side end portion 8 and the running surface side end portion 9 are arranged between the warp yarns 11 of the adjacent layer 10. Thereby, the overlap in the thickness direction of the short end warp 11a and the long end warp 11b and the warp 11 of the adjacent layer 10 constituting the paper surface side end 8 and the running surface side end 9 is avoided, and the thickness of the base 3 is increased. Is suppressed.

  The long terminal warp 11b extends in the length direction between the adjacent warps 11 of the adjacent layer 10, and is sewn to a plurality of wefts 12. The long terminal warp 11b is sewn to the weft 12 of the base fabric 2 in the other layer within a range of 3 cm to 10 cm. In other words, the long end warp 11b passes through the paper making surface side or the traveling surface side of about 10 to 30 wefts 12. The stitching form of the long end warp 11b with respect to the weft 12 can adopt any form. For example, after a single weft 12 is submerged, a repeating unit straddling the next one weft 12 or a single weft After diving 12, it may have a repeating unit that straddles the next two wefts 12 in succession.

  The short end warp 11a of the papermaking surface side end 8 is arranged so as to contact the surface of the adjacent layer 10 on the papermaking surface side. That is, the short end warps 11a of the papermaking surface side end portion 8 are arranged so as to continuously pass the papermaking surface side of the plurality of wefts 12 of the adjacent layer 10. The short end warp 11a of the traveling surface side end portion 9 is disposed so as to contact the surface of the adjacent layer 10 on the traveling surface side. That is, the short end warp 11a of the running surface side end portion 9 is arranged so as to continuously pass the running surface side of the plurality of wefts 12 of the adjacent layer 10.

  The base end 3 is maintained in a predetermined endless shape even before the batt fiber layer 4 is bonded by sewing the long terminal warp 11b of the papermaking surface side end portion 8 and the running surface side end portion 9 to the adjacent layer 10.

  The batt fiber layer 4 is a fiber assembly, and polyamide (nylon), polyester, polyethylene, polypropylene, polyvinyl chloride or the like is applied as the material thereof. A core-sheath composite fiber composed of a core part and a sheath part covering the core part may be applied to the batt fiber layer 4. By applying the core-sheath type composite fiber having a low melting point to the batt fiber layer 4, the bond with the base fabric 2 can be enhanced by heat setting described later. The batt fiber layer 4 is integrally coupled to the papermaking surface side and the running surface side of the base 3 formed endlessly by needling. The batt fiber layer 4 is entangled with the layers of the base fabric 2 to bond the layers of the base fabric 2 to each other.

A method for manufacturing the papermaking felt 1 configured as described above will be described. First, using a weaving machine, the base fabric 2 having a warp structure composed of warps 11 and wefts 12 is woven. The base fabric 2 is obtained, for example, by simple and high-speed flat plate weaving using a slewer loom or the like. Flat plate weaving has the advantage that the base fabric 2 can be woven with high accuracy and the dimensions can be easily changed.
The base fabric 2 has an end shape and is prepared in a roll shape wound around a core material. Next, the roll-shaped base fabric 2 is unwound, wound around a plurality of rollers, and laminated. Most of the base fabric 2 is wound and laminated so as to form two layers, and the end portions in the length direction are cut at the warp yarn 11 with a length overlapping in the thickness direction via the adjacent layer 10.

  Next, a plurality of wefts 12 at both ends 8 and 9 in the length direction are removed. At this time, the wefts 12 are removed until the wefts 12 left at both end portions 8 and 9 do not overlap in the thickness direction of the base fabric 2 to define the side end wefts 12a. Next, at both end portions 8 and 9 of the base fabric 2, the warp yarns 11 protruding in the length direction from the side-end weft yarns 12a are cut at predetermined different lengths to form short end warp yarns 11a and long end warp yarns 11b.

  Subsequently, among the long end warps 11b of the papermaking surface side end 8, the short end warps 16 disposed on both sides of the long end warp 15 passing through the paper making surface side of the side end weft 12a are the side end wefts 12a. Arrange it so that it passes through the paper-making side. Similarly, among the long end warps 11b of the running surface side end portion 9, the short end warps 11a arranged on both sides of the long end warp 11b passing through the running surface side of the side end weft 12a are the side end wefts 12a. Arrange to pass the running surface side.

  Next, the short end warp 11a of the papermaking surface side end 8 is disposed on the papermaking surface side of the plurality of wefts 12 of the adjacent layer 10, and the short terminal warp 11a of the running surface side end 9 of the adjacent layer 10 is adjacent. The plurality of wefts 12 are arranged on the traveling surface side. Further, the long end warps 11b of the papermaking surface side end portion 8 and the running surface side end portion 9 are extended in the length direction between the adjacent warp yarns 11 of the adjacent layer 10, and are sewn into the plurality of weft yarns 12. As a result, the papermaking surface side end portion 8 and the running surface side end portion 9 are coupled to the adjacent base fabric 2 of the other layer, and the endless base 3 is formed.

  Next, the batt fiber layer 4 is laminated and integrated on the endless base 3 by needling. The substrate 3 in which the batt fiber layer 4 is integrated becomes a papermaking felt 1 through washing with water and heat setting.

  The papermaking felt 1 according to the present embodiment has long end warps 11b at both ends 8 and 9 of the wound and laminated base fabric 2, and the long end warps 11b are sewn into the adjacent layer 10. Deviation between the layers of the substrate 3 is suppressed before needling of the fiber layer 4. Therefore, in order to bond the both end portions 8 and 9 of the base fabric 2 to the adjacent layer 10, it is not necessary to perform bonding with an adhesive or sewing with a suture.

  At both ends 8, 9, the weft 12 is removed, and the end of the short end warp 11a is formed, so that the thickness change of the base 3 due to the ends of both ends 8, 9 becomes moderate. In addition, since the short end warps 11a are arranged so as to overlap each other in the thickness direction with the adjacent layer 10 between the end portions 8 and 9, there is no portion where the base 3 becomes one layer. Even if the short end warps 11a at both ends 8 and 9 overlap each other through the adjacent layer 10, the weft 12 is removed at that portion, so that the thickness is larger than when the base fabric 2 has three layers. Has been reduced.

  Since the short end warps 16 on both sides of the long end warp 15 passing through the paper making surface side of the side end weft 12a pass through the paper making surface side of the side end weft 12a at the paper manufacturing side end 8, the short end warps 16 on both sides are adjacent. Can extend along the length direction without being affected by the long end warp 15 and the side end weft 12a. Thereby, the short end warps 11a are uniformly arranged, and a smooth flat surface is formed by the short end warps 11a. If the short end warp 11a on both sides of the long end warp 11b passing through the paper making surface side of the side end weft 12a passes the running surface side of the side end weft 12a at the end 8 on the paper side, the adjacent layer The side end weft 12a is pulled toward the running surface by the long end warp 11b sewn to 10, and the adjacent short end warp 11a may be pushed away from the long end warp 11b by the side end weft 12a. Thereby, the homogeneity of the surface which the short terminal warp 11a forms is impaired, and the smoothness of the papermaking surface 7 of the papermaking felt 1 is impaired. Similarly, the short end warp 11a adjacent to the long end warp 11b passing through the running surface side of the side end weft 12a passes through the running surface side of the side end weft 12a at the running surface side end portion 9. The short end warps 11a are uniformly arranged, and a smooth flat surface is formed by the short end warps 11a.

  When the ratio of the number of long end warps 11b to the number of all warps 11 is increased, the bonding between the end portions 8 and 9 and the adjacent layer 10 is strengthened, while the presence of the long end warps 11b causes voids in the substrate 3 to exist. The volume of water is reduced and water permeability is reduced. Therefore, the ratio of the number of long end warps 11b to the number of all warps 11 is preferably small as long as a desired strength can be achieved.

(Second Embodiment)
As shown in FIG. 6, the papermaking felt 20 according to the second embodiment is mostly composed of three layers of the base fabric 2 constituting the substrate 3 as compared with the papermaking felt 1 according to the first embodiment. Is different. The papermaking felt 20 includes an outer adjacent layer 21 in which the adjacent layer 10 is disposed on the papermaking surface side, and an inner adjacent layer 22 that is disposed on the running surface side of the outer adjacent layer 21. The long-end warp 11b at the papermaking surface side end 8 is stitched to the outer adjacent layer 21, and the long-terminal warp 11b at the running surface side end 9 is stitched to the inner adjacent layer 22. As described above, when the number of laminated base fabrics 2 constituting the substrate 3 is 3 or more, the papermaking surface side end portion 8 is stitched to the layer disposed on the most papermaking surface side of the adjacent layer 10 to run. The surface-side end portion 9 may be sewn to the layer arranged closest to the running surface of the adjacent layer 10.

(Third embodiment)
As shown in FIG. 7, the papermaking felt 30 according to the third embodiment is further provided on the papermaking surface side of the base body (first winding laminate) 3 as compared with the papermaking felt 1 according to the first embodiment. The difference is that two substrates 31 are provided. The second base 31 has a base cloth 32 that is endwise in the length direction arranged on the paper-making surface side of the first base 3, and has a single layer made of the base cloth 32. Similar to the base fabric 2, the base fabric 32 has a plurality of warps 11 extending in the length direction and a plurality of wefts 12 extending in the width direction, and a first end portion 33 that is one end in the length direction. And the 2nd end part 34 which is the other end has the short terminal warp 11a, the long terminal warp 11b, and the side end weft 12a. The second end portion 34 of the base fabric 32 is disposed on the surface of the base fabric 2 disposed on the papermaking surface side of the base 3, and the long end warps 11 b are sewn into the plurality of wefts 12 of the base fabric 2. . The base fabric 32 is arranged so that the short end warp 11a of the first end 33 overlaps the short end warp 11a of the second end 34 in the thickness direction after covering the paper-making surface side of the second base 31. . The long end warp 11 b of the first end portion 33 is sewn into the plurality of wefts 12 of the base fabric 32. The stitching form between the second end portion 34 of the base cloth 32 and the base cloth 2 disposed on the papermaking surface side of the base 3 and the stitching form between the first end portion 33 of the base cloth 32 and the base cloth 32 are the first. This is similar to the stitching mode of the end portions 8 and 9 and the adjacent layer 10 in the embodiment. It is preferable that the stitched portions of the base body 3 and the second base body 31 do not overlap in the thickness direction. As a modification of the papermaking felt 30, the second end 34 may be bonded to the base fabric 2 by heat welding or an adhesive.

  Since the papermaking felt 30 according to the third embodiment combines the two bases 3 and 31 into one base, the material and form of the warp 11 and the weft 12 (monofilament or The characteristics of the papermaking felt 30 can be changed more appropriately by changing the twisted yarn or the like (diameter) and the weave structure. For example, by increasing the yarn density of the second substrate 31 and decreasing the yarn density of the substrate 3, the surface smoothness can be increased and the porosity can be increased. Further, the second base 31 may be a wound laminate in which the base fabric 32 is wound a plurality of times.

(Fourth embodiment)
As shown in FIG. 8, the base body of the papermaking felt 40 according to the fourth embodiment is obtained by concentrating two base bodies 3 of the first embodiment concentrically. The two bases 3 and 3 (first winding laminate and second winding laminate) are not stitched together. It is preferable that the stitched portions of the substrates 3 and 3 do not overlap each other in the thickness direction. The two base bodies 3 and 3 are obtained by making the base body in the same manner as in the first embodiment, then cutting all the weft yarns 12 at the center in the width direction and dividing them into two parts, and concentrically superimposing them on each other. Can be manufactured easily.

(Fifth embodiment)
The papermaking felt 50 according to the fifth embodiment is different from the papermaking felt 1 according to the first embodiment as shown in FIG. 9 in that an endless base fabric 51 is provided on the papermaking surface side of the base 3. . The endless base fabric 51 is a base fabric woven by bag weaving.

  In the papermaking felt 50, the papermaking surface side end 8 of the substrate 3 is covered with the endless base fabric 51, so that the influence of the papermaking surface side end 8 on the smoothness of the papermaking surface 7 is further reduced.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. The number of layers of the substrates 3 and 31 in the embodiment described above can be changed as appropriate. Further, the positions of the papermaking surface side end 8 and the running surface side end 9 may be separated from each other so that the short end warps 11a do not overlap each other.

  DESCRIPTION OF SYMBOLS 1 ... Papermaking felt, 2 ... Base fabric, 3 ... Base | substrate (1st winding laminated body), 4 ... Bat fiber layer, 6 ... Running surface, 7 ... Paper-making surface, 8 ... Paper-making surface side edge part, 9 ... Running Surface side edge, 10: Adjacent layer, 11 ... Warp, 11a ... Short end warp, 11b ... Long end warp, 12 ... Weft, 12a ... Side end weft, 20 ... Papermaking felt, 21 ... Outer adjacent layer, 22 ... Inner adjacent layer, 30 ... papermaking felt, 31 ... second substrate (second winding laminate), 32 ... base fabric, 33 ... first end, 34 ... second end, 40 ... papermaking felt, 50 ... Felt for papermaking, 51 ... Endless base fabric

Claims (9)

A papermaking felt having a base formed in an annular shape and a batt fiber layer bonded to the base by needling,
The base has a first wound laminate in which a base fabric having a plurality of warps extending in the length direction and a plurality of wefts extending in the width direction is wound and laminated in the length direction;
The end in the length direction of the base fabric is disposed on the surface of an adjacent layer which is another adjacent layer of the base fabric,
The papermaking felt, wherein some of the warps constituting the end are sewn into the adjacent layer.   The plurality of warps constituting the end portion are short end warps having a short protrusion length from a side end weft arranged closest to the end portion of the wefts, and a protrusion length longer than the short end warp 2. The papermaking felt according to claim 1, wherein the long end warp is sewn into the adjacent layer.   The short end warp arranged on both sides of the long end warp passing through the side opposite to the adjacent layer of the side end weft is arranged so as to pass through the side opposite to the adjacent layer of the side end weft. The papermaking felt according to claim 2, wherein the papermaking felt is provided.   The ratio of the number of the long end warps to the total number of the plurality of warps constituting the end portion is in a range of 9.1% to 20%. Felt for papermaking.   5. The papermaking felt according to claim 4, wherein the long terminal warp is sewn into 15 to 50 wefts of the adjacent layer per one. 5.   The long terminal warp extends in the length direction, is disposed between the adjacent warps of the adjacent layer, and is sewn into the wefts of the adjacent layer. The papermaking felt according to any one of the items.   The said base | substrate has the 2nd winding laminated body which wound and laminated | stacked the base fabric which is the end in the length direction on the paper-making surface side of the said 1st winding laminated body. The papermaking felt according to any one of claims 6 to 7. The end of the second winding laminate on the first winding laminate side is disposed on the surface of the first winding laminate,
Some of the plurality of warps constituting the end portion on the first winding laminate side of the second winding laminate are sewn into the base fabric constituting the first winding laminate. The papermaking felt according to claim 7, wherein the felt is a papermaking felt.   The said base | substrate has the endless base fabric woven endlessly in the length direction on the paper-making surface side of the said 1st winding laminated body, The one of Claims 1-6 characterized by the above-mentioned. Papermaking felt as described in 1.

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