JP4897564B2 - Felt with seam for papermaking - Google Patents

Description

  The present invention relates to a felt with a seam for papermaking, which has a base fabric woven so that end joining loops are formed at both ears by turning back a driving yarn that becomes a warp on a paper machine on a loom. It is.

  In order to improve the workability into the paper machine, a so-called seam felt in which end felts are drawn into a felt run and both ends thereof are joined to each other to be endless is widely used. In this type of felt with seam, the warp forming the base fabric is folded back in the thickness direction to form loops at both ends in the length direction, and the loops at both ends are alternately meshed so that the center holes of each other are aligned. In general, a configuration in which both ends are joined by passing a core wire through the common hole formed in this manner.

  Such a felted base fabric of a seam is a loop for joining end portions on a loom by using the warp yarn on the paper machine as the driving yarn, the weft yarn on the paper machine as the warping yarn, and turning back the driving yarn at the ear. However, at this time, the driven yarn is folded straight in the thickness direction in one ear, whereas the driven yarn is placed in the next position in the other ear. In order to pass, the driving thread is folded back obliquely with respect to the thickness direction, and at the ear portion where the driving thread is folded back diagonally, the loop is formed in a state inclined obliquely in the thickness direction. The work of engaging the loops at both ends is troublesome, which is a major cause of reducing the workability of the joining work.

Therefore, there is a technique in which the loop is formed straight in the thickness direction by weaving in a bag weave so that an end joining loop is formed only at the ear portion where the driven yarn is folded straight. It is known (see Patent Document 1).
Japanese Patent No. 2791773

  However, in a base fabric having a warp quadruple structure of four warps overlapping in the thickness direction, when weaving with bag weaving, the number of warp yarns becomes very large because the number of warp yarns becomes eight. Weaving with a typical loom becomes difficult, and for this reason, there is a problem in that it is only possible to employ flat plate weaves that form loops for joining end portions at both ears, and the conventional technique cannot be employed. .

  The present invention has been devised to solve such problems of the prior art, and its main purpose is to use both ears by turning back the driving yarn that becomes the warp on the paper machine on the loom. When weaving the base fabric so that loops for end joining are formed, the form of the loop formed in an inclined state in the thickness direction can be easily modified to improve the workability of the joining work. It is an object of the present invention to provide a felt with a seam for papermaking configured so as to be able to be made.

In order to solve such a problem, in the present invention, as shown in claim 1, loops for joining the end portions are formed at both ears by turning back the driving yarn which becomes the warp on the paper machine on the loom. In the felt with a seam for papermaking having a base fabric woven as described above, the base fabric has a warp double structure with two warps overlapping in the thickness direction, and the driven yarn is folded back diagonally on the loom. A single-woven fabric layer in which wefts are entangled with each of a pair of warps forming a loop over a required length in the length direction from the loop at a side of the loop corresponding to the ear. It is a two-layer structure that overlaps with each other in an independent state, and forms the loop from the loop over the required length in the length direction at the end of the loop corresponding to the ear portion where the driven yarn is folded straight on the loom. Was that as a single-layer structure of fabric layer of a double weave structure with entangling the weft to both pairs of warp yarns.

  According to this, a pair of warp yarns forming a loop constitutes an independent fabric layer at the loop end portion on the side corresponding to the ear portion where the driven yarn is folded diagonally, and the fabric layers are allowed to be displaced from each other. Therefore, even if the loop is formed obliquely in the thickness direction during the weaving process, it becomes possible to straighten the inclination of the loop in a subsequent process such as heat setting. Can be improved.

In the felt with a seam for papermaking, as shown in claim 2 , an additional weft made of an aggregate yarn material in which a large number of either one or both of staples and filaments are aggregated is woven in the immediate vicinity of the loop. be able to. According to this, since the tightening of the base of the loop is eased, the form of the loop can be further optimized.

  In addition, by devising the entanglement form of the additional weft with respect to the warp, the form of the slanted loop is optimized, or the position in the thickness direction of the loop is optimized, and a plurality of loops arranged in the width direction are arranged. It is also possible to align them on a straight line, thereby improving the workability of the joining operation of engaging the loop and passing the core wire and the operation of putting it into the paper machine. Furthermore, since the additional weft is entangled with the fibers forming the nonwoven fiber layer, the nonwoven fiber layer in the vicinity of the loop is firmly held by the additional weft, so that seam marks can be suppressed.

  In this case, the additional weft hinders the independence of the fabric layers by each of the pair of warp yarns forming the loop, at least at the loop end portion on the side corresponding to the ear portion where the driven yarn is folded back diagonally on the loom. In other words, it is necessary to weave the fabric layers so that the mutual displacement of the fabric layers is allowed. In particular, in order to optimize the loop form, it is preferable to use a single weave such as a plain weave.

  As described above, according to the present invention, a pair of warp yarns forming a loop constitutes an independent fabric layer at the loop end portion on the side corresponding to the ear portion where the driven yarn is folded back diagonally, and the fabric layers are mutually connected. Therefore, even if the loop is inclined in the thickness direction during the weaving process, it becomes possible to straighten the loop inclination in the subsequent process such as heat setting, The workability of the work can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view in the length direction showing an example of a felt with a seam according to the present invention. This felt with seam is formed by laminating and integrating a nonwoven fiber layer 2 on a base fabric 1, and the base fabric 1 is composed of first and second warps formed by a first driving yarn on a loom. 3 and 4 and third and fourth warp yarns 5 and 6 formed by the second driving yarn, and these four warp yarns 3 to 6 are provided by overlapping in the thickness direction. It has a woven fabric structure.

  In the base fabric 1, the first direction yarns 3 and 4 on the papermaking surface 8 side (upper side) of the first to fourth warps 3 to 6 are turned back by turning back the first driving yarns 3 and 4. Loops 11 and 12 are formed at both ends, and the lengthwise direction is achieved by turning back the second driven yarns that become the third and fourth warps 5 and 6 on the running surface 9 side (lower side) opposite to the papermaking surface 8. The loops 13 and 14 are formed at both ends of the loop, and a large number of these loops 11 to 14 are arranged in the width direction of the felt to form a loop row. Are joined to each other alternately so that the core wires 15 and 16 for joining are inserted in the width direction into the common hole formed thereby, and both ends of the felt are joined.

  In the ground portion of the base fabric 1, a two-layer structure in which a first fabric layer Lc1 composed of an upper pair of warps 3 and 4 and a second fabric layer Lc2 composed of a lower pair of warps 5 and 6 overlap each other. It has become. In the first woven fabric layer Lc1, the double woven portion in which the weft yarn 18a is entangled with both the warp yarns 3 and 4 and the weft yarn 18b intertwined with each of the two warp yarns 3 and 4 overlap each other in the thickness direction. The second woven fabric layer Lc2 has a composite structure composed of repeating unit structures composed of a single woven superposed portion in a state where the heavy woven fabrics are superposed. -It has a composite structure of a double woven part and a single woven polymer part by 18d. In addition, wefts (binding yarns) 18e that are intertwined with the second and third warp yarns 4 and 5 to join the first and second fabric layers Lc1 and Lc2 are woven at a predetermined interval.

  At the end of the loop on the one end 1a side of the base fabric 1, a first fabric layer La1 having a double woven structure in which wefts 18f are entangled with a pair of warps 3 and 4 forming the upper loop 11; A three-layer structure in which the second and third fabric layers La2 and La3 having a single woven structure in which wefts 18h and 18g are entangled with a pair of warps 5 and 6 forming the lower loop 13 overlap each other. It has become.

  On the other hand, at the end of the loop on the other end 1b side, the first and second of the single woven structure in which the wefts 18i and 18j are entangled with the pair of warps 3 and 4 forming the upper loop 12, respectively. The woven fabric layers Lb1 and Lb2 and the third woven fabric layer Lb3 having a double woven structure in which wefts 18g are entangled with both the warps 5 and 6 forming the lower loop 14 have a three-layer structure. .

  The warps 3 to 6 are monofilament yarns made of a high-strength synthetic resin material such as polyamide. Similarly, the wefts 18a to 18k are monofilament yarns made of a high-strength synthetic resin material such as polyamide.

  Further, a weft 19 made of a multifilament yarn in which a large number of filaments are bundled is woven in the immediate vicinity of the loops 11 to 14, and the weft 19 relaxes the tightening of the base of the loops 11 to 14, so that the loop 11 The form of -14 can be optimized.

  The weft yarn 19 only needs to be made of an aggregate yarn material in which either one or both of staples and filaments are aggregated. In addition to multifilament yarns, spun yarns obtained by spinning staples, A twisted yarn of a filament yarn and a spun yarn, a multifilament yarn, a twisted yarn of at least one of the spun yarn and another yarn, and the like are also possible.

  FIG. 2 is a schematic diagram showing a procedure for weaving the base fabric 1 shown in FIG. Here, the first to fourth warps 3 to 6 on the paper machine are driven yarns on the loom, and the wefts 18a to 18k and the weft 19 on the paper machine are warps (warp yarns) on the loom, The base fabric 1 is woven while the loops 11 to 14 are formed by winding the thread-forming yarns around the loop forming core materials 21 and 22.

  The loops 11 to 14 are formed by both ears 23 and 24 on the loom, and in these ears 23 and 24, the first driven yarns to be the first and second warp yarns 3 and 4 are used as a core material for loop formation. Loops 11 and 12 are formed by hooking on 21 and 22 and turning back. Similarly, the second driven yarns to be the third and fourth warps 5 and 6 are hooked on the loop forming core materials 21 and 22 and turned back. Loops 13 and 14 are formed.

  Here, the first driving yarn to be the first and second warps 3 and 4 is folded straight in the thickness direction on the one ear portion 23 side to form the loop 11, while the other On the side of the ear portion 24, the loop 12 is formed by being folded obliquely with respect to the thickness direction, and the loop 12 in the vicinity of the loop 12 formed by the oblique folding is, as shown in FIG. The pair of warp yarns 3 and 4 forming the fabric constitutes independent fabric layers Lb1 and Lb2, and the inclination of the loop 12 is corrected by the fabric layers Lb1 and Lb2 being displaced from each other.

  In addition, the second driven yarns that become the third and fourth warps 5 and 6 are folded straight in the thickness direction on the ear portion 24 side to form the loop 14, whereas on the ear portion 23 side, A loop 13 is formed by being folded obliquely with respect to the thickness direction, and a pair of loops forming the loop 13 is formed in the vicinity of the loop 13 formed by the oblique folding as shown in FIG. The warp yarns 5 and 6 constitute independent fabric layers La2 and La3, and the inclination of the loop 13 is corrected by the fabric layers La2 and La3 being displaced from each other.

  In this way, at the end of the loop, the region in which the pair of warps forming the loop constitutes a fabric layer independent of each other is provided from the loop over the required length in the length direction, for example, 5 mm to 10 cm, preferably 1 cm to 3cm is recommended.

  In addition, as shown in FIG. 1, the weft yarns 19 woven in the immediate vicinity of the loops 11 to 14 are intertwined with each of the first to fourth warp yarns 3 to 6 to form a single woven structure. However, other forms are possible. In this case, at least at the loop end portion on the side corresponding to the ear portion where the driven yarn is folded back diagonally on the loom, the mutual independence of the fabric layers by each of the pair of warp forming the loop is not hindered. It is necessary to weave so that the shift between the layers is allowed. In particular, in order to optimize the shape of the loop, it is preferable to use a single weave such as a plain weave.

  3, 4, and 5 are schematic diagrams illustrating examples of the structure of the loop edge portion of the base fabric 1 illustrated in FIG. 1.

  In the example shown in FIG. 3A, as in the example of FIG. 1, the weft 31a is entangled with both the pair of warps 3 and 4 forming the upper loop 11 at the end of the loop on the one end 1a side. In addition, the second and second layers of the single woven structure in which the wefts 31b and 31c are entangled with the first woven fabric layer La1 having the double woven structure and the pair of warps 5 and 6 forming the lower loop 13, respectively. It has a three-layer structure in which three fabric layers La2 and La3 overlap.

  On the other hand, at the end of the loop on the other end 1b side, the first and second of the single woven structure in which the wefts 31d and 31e are entangled with the pair of warps 3 and 4 forming the upper loop 12, respectively. A three-layer structure in which the woven layers Lb1 and Lb2 and a third woven layer Lb3 having a double woven structure in which a weft 31f is entangled with a pair of warps 5 and 6 forming the lower loop 14 are overlapped with each other. It has become.

  In this configuration, the warp yarns 3 and 4 forming the upper loop 12 at the end of the loop on the other end 1b side constitute the fabric layers Lb1 and Lb2 that are independent from each other. If weaving so as to be folded, the inclination of the loop 12 can be corrected. Further, the warp yarns 5 and 6 forming the lower loop 13 at the end of the loop on the one end 1a side constitute independent fabric layers La2 and La3, so that the lower driven yarn is folded back obliquely on the one end 1a side. If weaving, the inclination of the loop 13 can be corrected.

  In the example shown in FIG. 3 (B), a single woven fabric in which wefts 31g to 31j are entangled with each of warps 3 to 6 forming upper and lower loops 11 and 13 at the end of the loop on one end 1a side. It has a four-layer structure in which the layers La1 to La4 overlap.

  On the other hand, the loop edge on the other end 1b side has the same structure as the loop edge on the one end 1a side, and wefts 31k to 31n are entangled with the warps 3 to 6 forming the upper and lower loops 12 and 14, respectively. The single-woven fabric layers Lb1 to Lb4 thus made have a four-layer structure that overlaps.

  In this configuration, the warp yarns 3 to 6 forming the upper and lower loops 11 and 13 at the end of the loop on the one end 1a side constitute independent fabric layers La1 to La4, and the upper and lower ends at the end of the loop on the other end 1b side. The warp yarns 3 to 6 forming the loops 12 and 14 constitute the fabric layers Lb1 to Lb4 that are independent from each other. For this reason, even if weaving is performed so that the driven yarn is folded back obliquely at any position during weaving, the inclination of the loops 11 to 14 can be corrected.

  In particular, this structure is effective in making the characteristics of the seam portion uniform since the structure of the loop end portion on the one end 1a side and the other end 1b side is the same.

  In the example shown in FIG. 3C, the first of the double woven structure in which the weft 31o is entangled with the pair of warps 3 and 4 forming the upper loop 11 at the end of the loop on the one end 1a side. And a second woven layer La2 having a double woven structure in which a weft 31p is entangled with a pair of warps 5 and 6 forming the lower loop 13, and a second woven layer La2 is overlapped. ing.

  On the other hand, the loop end on the other end 1b side has the same structure as the example in FIG. 3B, and wefts 31k to 31n are entangled with the warps 3 to 6 forming the upper and lower loops 12 and 14, respectively. The single-woven fabric layers Lb1 to Lb4 thus made have a four-layer structure that overlaps.

  In this configuration, the warp yarns 3 to 6 forming the loops 12 and 14 at the end of the loop on the other end 1b side constitute independent fabric layers Lb1 to Lb4. For this reason, if weaving is performed so that both the upper and lower driven yarns are folded back obliquely on the other end 1b side during weaving, the inclination of the loops 12 and 14 can be corrected.

  In the example shown in FIG. 4, at the end of the loop on the one end 1 a side, the first and the first weaves of a single weave structure in which wefts 31 q and 31 r are entangled with a pair of warps 3 and 4 forming the upper loop 11. A second fabric layer La1 and La2 and a third fabric layer La3 having a double woven structure in which a weft 31s is entangled with a pair of warps 5 and 6 forming the lower loop 13 overlap 3 It has a layer structure.

  On the other hand, the loop end on the other end 1b side has the same structure as the example of FIGS. 3 (B) and 3 (C), and wefts 31k˜ It has a four-layer structure in which fabric layers Lb1 to Lb4 having a single woven structure in which 31n are entangled overlap each other.

  In this configuration, the warp yarns 3 to 6 forming the loops 12 and 14 at the end of the loop on the other end 1b side constitute independent fabric layers Lb1 to Lb4. If weaving is performed so as to be folded back diagonally, the inclination of the loops 12 and 14 can be corrected. Further, since the warp yarns 3 and 4 forming the loop 11 at the end of the loop on the one end 1a form independent fabric layers La1 and La2, the upper driven yarn is woven so that it is folded back obliquely on the one end 1a side. Anyway.

  In particular, in this configuration, since the structure of the loop end portion on the one end 1a side and the other end 1b side is the same at least on the papermaking surface side (upper side), it is effective in uniforming the surface characteristics on the papermaking surface side in the seam portion. It is.

  As described above, in the configuration shown in FIG. 3 and FIG. 4, the fabric layer formed by the warps 3 and 4 forming the upper loops 11 and 12 and the lower side at the loop ends on the one end 1a side and the other end 1b side, Since the fabric layers formed by the warps 5 and 6 forming the loops 13 and 14 are separated and independent from each other, the upper loops 11 and 12 and the lower loops 13 and 14 can be greatly separated from each other. In addition, since the shapes of the plurality of loops 11 to 14 arranged in the width direction can be made uniform, the workability of the joining work of engaging the loops 11 to 14 and passing the core wire and the work of putting in the paper machine is improved. be able to.

  In the example shown in FIG. 5A, a first woven fabric layer La1 having a single woven structure in which wefts 51a are entangled with the first warp 3 forming the upper loop 11 at the end of the loop on the one end 1a side. A second woven layer La2 having a double woven structure in which wefts 51b are entangled with a second warp 4 forming the upper loop 11 and a third warp 5 forming the lower loop 13. It has a three-layer structure in which a third fabric layer La3 having a single woven structure in which a weft 51c is entangled with a fourth warp 6 forming the lower loop 13 is overlapped.

  On the other hand, the loop edge portion on the other end 1b side has the same structure as the loop edge portion on the one end 1a side, and is a first fabric layer having a single woven structure in which wefts 51d are entangled with the first warp 3. Lb1, a second woven fabric layer Lb2 having a weft 51e entangled with both the second and third warps 4 and 5, and a weft 51f entangled with a fourth warp 6 It has a three-layer structure in which the third woven fabric layer Lb3 having a heavy woven structure is overlapped.

  In this configuration, a pair of warp yarns 3 and 4 forming the upper loop 11 at the end of the loop on the one end 1a side constitutes a fabric layer La1 and La2 independent of each other, and a pair forming the lower loop 13 The warp yarns 5 and 6 constitute the fabric layers La2 and La3 that are independent of each other. In addition, a pair of warps 3 and 4 forming the upper loop 12 at the end of the loop on the other end 1b side constitute independent fabric layers Lb1 and Lb2, and a pair of warps forming the lower loop 14 5 and 6 constitute mutually independent fabric layers Lb2 and Lb3. For this reason, even if weaving is performed so that the driven yarn is folded back obliquely at any position during weaving, the inclination of the loops 11 to 14 can be corrected.

  In particular, this structure is effective in making the physical properties of the seam portion uniform because the structure of the loop end portion on the one end 1a side and the other end 1b side is the same.

  In the example shown in FIG. 5B, a single woven structure in which wefts 51g and 51h are entangled with each of a pair of warps 3 and 4 forming the upper loop 11 at the end of the loop on the one end 1a side. A third fabric layer La3 having a double woven structure in which wefts 51i are entangled with both the first and second fabric layers La1 and La2 and a pair of warps 5 and 6 forming the lower loop 13; Has a three-layer structure in which

  On the other hand, the loop end portion on the other end 1b side has the same structure as that of the example of FIG. 5A, and is a first fabric layer having a single woven structure in which wefts 51d are entangled with the first warp 3. Lb1, a second woven fabric layer Lb2 having a weft 51e entangled with both the second and third warps 4 and 5, and a weft 51f entangled with a fourth warp 6 It has a three-layer structure in which the third woven fabric layer Lb3 having a heavy woven structure is overlapped.

  In this configuration, a pair of warps 3 and 4 forming the upper loop 12 at the end of the loop on the other end 1b side constitutes the fabric layers Lb1 and Lb2 that are independent from each other, and the lower loop 14 is formed 1 Since the pair of warp yarns 5 and 6 constitute the fabric layers Lb2 and Lb3 that are independent of each other, if weaving is performed so that both the upper and lower driven yarns are obliquely folded at the other end 1b during weaving, the inclination of the loops 12 and 14 Can be corrected. Further, since the warp yarns 3 and 4 forming the upper loop 11 at the end of the loop on the one end 1a form independent fabric layers La1 and La2, weaving is performed so that the upper driven yarn is folded back obliquely on the one end 1a side. You may make it do.

  In particular, in this configuration, since the structure of the loop end portion on the one end 1a side and the other end 1b side is the same at least on the papermaking surface side (upper side), it is effective in uniforming the surface characteristics on the papermaking surface side in the seam portion. It is.

  In the example shown in FIG. 5C, the first of the double woven structure in which the wefts 51j are entangled with the pair of warps 3 and 4 forming the upper loop 11 at the end of the loop on the one end 1a side. And a second woven layer La2 having a double woven structure in which a weft 51k is entangled with a pair of warps 5 and 6 forming the lower loop 13, and a second woven layer La2 is overlapped. ing.

  On the other hand, the loop end portion on the other end 1b side has the same structure as the example of FIGS. 5A and 5B, and is a first woven structure in which a weft 51d is entangled with the first warp 3. 1 woven layer Lb1, a second woven fabric layer Lb2 having a weft 51e entangled with both the second and third warps 4 and 5, and a fourth woof 6 with a weft 51f. It has a three-layer structure in which the third woven fabric layer Lb3 having a single woven structure is overlapped.

  In this configuration, a pair of warps 3 and 4 forming the upper loop 12 at the end of the loop on the other end 1b side constitutes the fabric layers Lb1 and Lb2 that are independent from each other, and the lower loop 14 is formed 1 The pair of warp yarns 5 and 6 constitute the fabric layers Lb2 and Lb3 that are independent of each other. For this reason, if weaving is performed so that both the upper and lower driven yarns are folded back obliquely on the other end 1b side during weaving, the inclination of the loops 12 and 14 can be corrected.

  6, FIG. 7, FIG. 8, and FIG. 9 are schematic views showing examples of the structure of the ground portion in the base fabric 1 shown in FIG.

  In the example shown in FIG. 6A, the first to fourth fabric layers Lc1 to Lc4 having a single woven structure in which wefts 61a to 61d are entangled with the first to fourth warps 3 to 6 overlap each other. It has a four-layer structure, and weft yarns (binding yarns) 61e that are intertwined with the inner second and third warp yarns 4 and 5 and couple the second and third fabric layers Lc2 and Lc3 to each other are predetermined. Is woven at intervals.

  In this configuration, since the fabric layers Lc1 to Lc4 are not separated from each other, it can be combined with any of the examples in FIGS. 3 to 5 at the end of the loop. For example, the basic structure is the same. Combining with the structure shown in FIG. 3B is effective in making the physical properties of the entire base fabric uniform.

  In the example shown in FIG. 6 (B), as in the example of FIG. 6 (A), the first of the single woven structure in which wefts 61f to 61i are entangled with the first to fourth warps 3 to 6, respectively. The fourth fabric layers Lc1 to Lc4 overlap each other, and in this example, the first and second fabric layers Lc1 and Lc2 are intertwined with the first and second warps 3 and 4, respectively. The weft yarn (binding yarn) 61j to be joined and the weft yarn (binding yarn) 61k to be intertwined with the third and fourth warp yarns 5 and 6 to join the third and fourth fabric layers Lc3 and Lc4 are predetermined. Is woven at intervals. Furthermore, at the boundary position between the ground portion and the loop edge portion, weft yarns (binding yarns) 61l that are intertwined with the second and third warp yarns 4 and 5 to join the second and third fabric layers Lc2 and Lc3. 61m is woven.

  Similar to the example of FIG. 6A, this configuration may be combined with the configuration of FIG. 3B in which the basic organization structure is the same at the loop end.

  Moreover, in each example of FIG. 6, since it becomes a 4 layer structure by the textile layers Lc1-Lc4 of a single woven structure, it is effective in raising the porosity of a base fabric.

  In the example shown in FIG. 7A, a first fabric layer Lc1 having a single woven structure in which a weft 71 is entangled with a first warp 3, and a weft 71b is entangled with a second warp 4 A three-layer structure in which a second woven fabric layer Lc2 having a heavy woven structure and a third woven fabric layer Lc3 having a double woven structure in which wefts 71c are entangled with both the third and fourth warps 5 and 6 are overlapped. It has become.

  In this configuration, since the warps 3 and 4 are connected, the first fabric layer Lc1 and the second fabric layer Lc2 are not separated from each other, but the first and second fabric layers Lc1 and Lc2 It can be separated from the third fabric layer Lc3. For this reason, it is good to combine with the structure provided with the weft intertwined with the warps 4 * 5 in the loop edge part like the example of FIG. 5 (A).

  In the example shown in FIG. 7 (B), as in the example of FIG. 7 (A), the first fabric layer Lc1 having a single woven structure in which the weft 71d is entangled with the first warp 3; A second weaving structure second fabric layer Lc2 in which weft yarn 71e is entangled with warp yarn 4, and a third weaving structure third in which weft yarn 71f is entangled with both third and fourth warp yarns 5 and 6. In this case, the weft yarns are intertwined with the second and third warp yarns 4 and 5 and joined to the second and third fabric layers Lc2 and Lc3. (Binding yarn) 71 g is woven at a predetermined interval.

  In this configuration, since the fabric layers Lc1 to Lc3 are not separated from each other as in the example of FIG. 7A, it can be combined with any of the examples of FIGS. However, when combined with each of the examples in FIGS. 3B, 4, 5 A, and B where the structure on the papermaking side (upper side) is the same, the surface characteristics on the papermaking side are made uniform. Effective above.

  In the example shown in FIG. 7C, as in the example of FIGS. 7A and 7B, the first woven layer Lc1 having a single woven structure in which wefts 71h are entangled with the first warp 3 and A second weaving layer Lc2 having a single weaving structure in which weft yarns 71i are entangled with the second warp yarn 4, and a double weaving in which weft yarns 71j are entangled with both the third and fourth warp yarns 5 and 6. The structure is a three-layer structure in which the third fabric layer Lc3 overlaps, and in particular, the first and second fabric layers Lc1 and Lc2 are joined by being intertwined with the first and second warps 3 and 4 here. Weft yarns (binding yarns) 71k are woven at a predetermined interval. Furthermore, at the boundary position between the ground portion and the loop edge portion, weft yarns (binding yarns) 71l which are intertwined with the second and third warp yarns 4 and 5 to join the second and third fabric layers Lc2 and Lc3. 71m is woven.

  In this configuration, similar to the example of FIG. 7B, the fabric layers Lc1 to Lc3 are not separated from each other, and thus can be combined with any of the examples of FIGS. For example, it may be combined with the examples of FIGS. 3B, 4, 5 A, and 5 B.

  In the example shown in FIG. 8A, a first woven fabric layer Lc1 having a double woven structure in which wefts 81a are entangled with both first and second warps 3 and 4, and third and fourth warps. It has a two-layer structure in which a second woven fabric layer Lc2 having a double woven structure in which wefts 81b are entangled with both 5.6 is overlapped.

  In this configuration, since the first woven fabric layer Lc1 and the second woven fabric layer Lc2 are separable, as shown in the example of FIG. It is good to combine with the provided structure.

  In the example shown in FIG. 8B, as in the example of FIG. 8A, the first woven fabric having a double woven structure in which the weft 81c is entangled with both the first and second warps 3 and 4. The layer Lc1 and the second fabric layer Lc2 having a double woven structure in which the weft 81d is entangled with both the third and fourth warps 5 and 6 have a two-layer structure, in particular, the first layer here. Weft yarns (binding yarns) 81e that are intertwined with the second and third warp yarns 4 and 5 to join the first and second fabric layers Lc1 and Lc2 are woven at a predetermined interval.

  In this configuration, unlike the example of FIG. 8 (A), the first fabric layer Lc1 and the second fabric layer Lc2 are not separated, so each of the examples of FIGS. Any combination is possible.

  In the example shown in FIG. 9A, the first weft layer Lc1 in which the weft 91a is entangled with the first warp 3 and the second and third warps 4 and 5 are both wefts. A three-layer structure in which a second woven layer Lc2 having a double woven structure in which 91b is entangled and a third woven layer Lc3 having a single woven structure in which a weft 91c is entangled with the fourth warp 6 are overlapped; It has become.

  In this configuration, since the fabric layers Lc1 to Lc3 are not separated from each other, it can be combined with any of the examples of FIGS. 3 to 5 at the end of the loop. For example, the overall structure is the same. It is good to combine with the structure of FIG. 5 (A) and the structure of FIG. 3 (B) in which the structure | tissue in the papermaking surface side (upper side) becomes the same.

  In the example shown in FIG. 9B, as in the example of FIG. 9A, the first fabric layer Lc1 having a single weave structure in which the weft 91d is intertwined with the first warp 3, and the second A second woven structure second fabric layer Lc2 in which wefts 91e are entangled with both third warps 4 and 5, and a third woven structure third in which wefts 91f are entangled with fourth warps 6. The fabric layer Lc3 overlaps with the first and second warp yarns 3 and 4, and in this case, the weft yarns (contacts) are joined to the first and second fabric layers Lc1 and Lc2. 91g and wefts (binding yarns) 91h that are intertwined with the third and fourth warps 5 and 6 to join the second and third fabric layers Lc2 and Lc3 are woven at a predetermined interval. ing.

  In this configuration, similarly to the example of FIG. 9A, it can be combined with any of the examples of FIGS. 3 to 5 at the loop end, for example, the example of FIG. It can be combined with the example of FIG.

  FIG. 10 is a sectional view in the length direction showing another example of the felt with seam according to the present invention. This felt with seam is formed by laminating and integrating a non-woven fiber layer 102 on a base fabric 101, and the base fabric 101 is formed by first and second warps 103 and 104 formed by driving yarns on a loom. And has a warp double structure fabric structure in which the two warp yarns 103 and 104 are overlapped in the thickness direction.

  In this base fabric 101, loops 105 and 106 are formed at both ends in the length direction by turning back the driving yarns to be the warp yarns 3 and 4, and the loops 105 and 106 are alternately meshed to form a common hole formed thereby. The both ends of the felt are joined by inserting the joining core wire 107 into the joint.

  In the ground portion of the base fabric 101, a double woven portion in which a weft yarn 108a is entangled with both warp yarns 103 and 104 and a weft yarn 108b intertwined with each of the two warp yarns 103 and 104 overlap in the thickness direction. It has a one-layer structure of a woven fabric layer Lc having a composite structure constituted by repeating a unit structure composed of a single-woven superposed portion in a state in which a single-woven is overlapped.

  At the end of the loop on the one end 101a side of the base fabric 101, a double-woven fabric layer La in which wefts 108c are entangled with both warp yarns 103 and 104 has a single layer structure. On the other hand, at the end of the loop on the other end 101b side, the first and second fabric layers Lb1 and Lb2 having a single weave structure in which the wefts 108d and 108e are entangled with the warps 103 and 104 are overlapped. It has become.

  FIG. 11 is a schematic diagram showing a procedure for weaving the base fabric 101 shown in FIG. Here, the first and second warps 103 and 104 on the paper machine are driven yarns on the loom, and the wefts 108a to 108e and the weft 19 on the paper machine are warps (warp yarns) on the loom. The loops 105 and 106 are formed by respective ear portions 113 and 114 on the loom, and in these ear portions 113 and 114, the driving yarns to be the first and second warp yarns 103 and 104 are loop-forming core materials 111 and 112, respectively. Loops 105 and 106 are formed by being hooked on and folded back.

  Here, the driving yarns that become the warp yarns 103 and 104 are folded back straight in the thickness direction on one ear portion 113 side to form the loop 105, whereas in the thickness direction on the other ear portion 114 side. As shown in FIG. 10, as shown in FIG. 10, a pair of warps 103. 104 constitutes the fabric layers Lb1 and Lb2 independent of each other, and the inclination of the loop 106 is corrected by the fabric layers Lb1 and Lb2 being displaced from each other.

  The felt with a seam for papermaking according to the present invention is obtained when the base fabric is woven on the loom so that the loops for joining the end portions are formed at both ears by turning back the driving yarn which becomes the warp on the paper machine. In the press part (squeezing part) of the paper machine, it has the effect of easily correcting the form of the loop formed in an inclined state in the thickness direction and improving the workability of the joining work. It is useful as a press felt used or a dryer felt used in a dry part (drying section).

It is sectional drawing of the length direction which shows an example of the felt with a seam by this invention. It is a schematic diagram which shows the point of the weaving of the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the loop edge part in the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the loop edge part in the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the loop edge part in the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the ground part in the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the ground part in the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the ground part in the base fabric shown in FIG. It is a schematic diagram which shows the example of the structure of the ground part in the base fabric shown in FIG. It is sectional drawing of the length direction which shows another example of the felt with a seam by this invention. It is a schematic diagram which shows the point of the weaving of the base fabric shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base fabric, 1a one end, 1b other end 2 Non-woven fiber layer 3-6 Warp 8 Paper making surface 9 Running surface 11-14 Loop 15 * 16 Core wire 18a-18k for weft 19 Weft 21 * 22 Core material 23 for loop formation 24 ears 31a to 31s, 51a to 51k, 61a to 61m, 71a to 71m, 81a to 81e, 91a to 91h weft 101 base fabric, 101a one end, 101b the other end 102 non-woven fiber layer 103/104 warp 105/106 Loop 107 Joining core wires 108a to 108e Wefts 111 and 112 Loop forming core materials 113 and 114 Ear portions La, La1, La2, La3, La4, Lb1, Lb2, Lb3, Lc, Lc1, Lc2, Lc3, Lc4 Fabric layer

Claims (2)

A felt with a seam for papermaking, having a base fabric woven so that loops for end joining are formed at both ears by folding back of the driving yarn that becomes the warp on the paper machine on the loom,
The base fabric has a warp double structure composed of two warps overlapping in the thickness direction,
On the loom , the weft yarn is entangled with each of a pair of warp yarns that form the loop at the end of the loop corresponding to the ear portion where the driven yarn is folded back diagonally over the required length in the length direction. The single-woven fabric layer made into a two-layer structure that overlaps in an independent state,
On the loom, on the side of the loop corresponding to the ear where the thread is turned straight back, the weft is entangled with both the pair of warps forming the loop over the required length in the length direction from the loop. A felt with a seam for papermaking, characterized in that it has a single-layer structure with a double-woven fabric layer . The felt with a seam for papermaking according to claim 1, wherein an additional weft made of an aggregate yarn material in which either one or both of staples and filaments are aggregated is woven in the immediate vicinity of the loop .

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