JP2001254287A - Seam felt for paper making - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seam felt having a base fabric composed of a woven fabric texture of multiple weaving in such a way that the connection operation of end parts can be efficiently carried out and the distortion of connected part and the unevenness of a paper forming face caused by collapse of texture can be avoided. SOLUTION: This seam felt for paper making has a base fabric 1 composed of a woven fabric texture of multiple weaving provided with warps 4-7 in piles in the thickness direction in which a pair of the warps 4 and 5 in piles in the thickness direction are shaped by folding a beating yarn in the thickness diseases so as to form a connected loop 9, on the other hand, the residual warps 6 and 7 are shaped by making a beating yarn be caught by a weft 12 and folding the beating yarn without forming a connected loop. Especially the weft 12 by which the beating yarn is caught so as to fold the beating yarn without forming the connected loop is set not to be entangled with the warps 4 and 5 to form the connected loop.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a papermaking seam felt which is joined endlessly by joining joining loops provided at both ends of an end felt, and through which a core wire is connected endlessly. The present invention relates to a seam felt having a base fabric having a multi-woven fabric structure in which warps are provided in a thickness direction.

[0002]

2. Description of the Related Art In a papermaking felt used in a pressing process of wet paper, a base fabric having a triple weave and a quadruple weave or a multi-woven fabric structure equivalent thereto is preferably used in order to enhance water squeezing. In order to improve the workability of inserting the paper into the paper machine, it is advisable to adopt a so-called seam felt in which the end felt is drawn into the felt run and both ends are joined to each other to make it endless. Various seam felts having a base fabric made of a woven fabric have been proposed.

[0003] The joint at both ends of a seam felt is
The joining loops to be joints are alternately engaged with each other so that their center holes are aligned with each other, and a core wire is passed through a common hole formed thereby. A method for forming a joining loop is disclosed in Japanese Utility Model Publication No. Sho 60-21439. And Tokubo 63-3
No. 8467, a retrofit type attached after weaving the base fabric as disclosed in JP-A-11-323766 and Japanese Patent No. 2786611,
2. Description of the Related Art There is known a configuration in which a folded portion of a warp constituting a base fabric is used when weaving the base fabric.

[0004]

However, in a seam felt having a structure in which a joining loop is formed by using a warp in the weaving of the base fabric, a double-woven fabric is overlapped,
Although the joint loops are deviated in the length direction, etc., a plurality of rows of the joint loops are formed by using the folded portions of all the warps as the joint loops. A disadvantage arises that it is troublesome and inefficient.

On the other hand, it is conceivable that a joining loop is provided in a single row by using a part of the warp, and the remaining warp is folded without forming the joining loop, whereby a seam having a multi-woven fabric is considered. The joining work can be easily performed with felt, but in this case, in order to increase the strength of the base fabric and simplify the manufacturing process, instead of overlapping double-woven fabrics, It is desirable to adopt a general multi-woven structure in which wefts are entangled.

However, the multi-woven fabric is woven as a warp yarn in the completed state and a warp yarn in the completed state, and is wrapped in order to fold the driven yarn without forming a joining loop. If the driving yarn is hooked on the weft in the vicinity of the part and regulated, the weft will be partially pulled in the folding direction of the driving yarn, and this will be dragged by the weft and the whole structure of the vicinity will collapse, In particular, the warp forming the joining loop may be twisted and the joining loop may be distorted. The distortion of the joining loop makes it difficult to engage the joining loop in the joining operation, and thus causes a reduction in working efficiency. In addition, the collapse of the structure causes large irregularities on the paper-formed surface and causes marks that degrade the paper quality, and it is desired to avoid it.

The present invention has been devised in order to solve such problems of the prior art, and a first object of the present invention is to provide a seam felt having a base fabric made of a multi-woven fabric structure by using an end. The second object is to configure so as to be able to perform the joining operation of the parts efficiently and to avoid the distortion of the joining loop and the unevenness of the paper forming surface due to tissue collapse. It is in.

[0008]

In order to achieve the above object, the present invention provides a base fabric having a multi-woven fabric structure in which three or more warp yarns are superposed in the thickness direction. In a seam felt in which a driving yarn serving as a warp in a completed state of the base fabric is folded at the end in the thickness direction to form a joining loop, a pair of warps overlapping in the thickness direction forms a joining loop. The remaining warp was formed by hooking the driven yarn onto the weft without forming a joining loop, and the remaining warp was folded back. According to this, since only one joining loop is formed, the joining operation by inserting the core wire can be performed easily as in the case of the double-woven fabric structure.

[0009] In particular, the driving yarn is hooked to fold back without forming a joining loop,
It is preferable that the warp forming the joining loop is provided so as not to be entangled with the warp. According to this, the weft controlling the driving yarn applies a force acting when the driving yarn is folded back to other warps not forming the joining loop. Since it is widely dispersed, the driven yarn can be reliably regulated without being easily displaced, and the folded position is arranged straight in the width direction along the weft yarn. Then, the driving yarn is not caught on the normal weft entangled with the warp forming the joining loop, and the weft that regulates the driving yarn is not entangled with the warp forming the joining loop. For this reason, a shift is allowed for this warp, so that even if the weft controlling the driven yarn shifts, it does not have a large effect on the warp forming the joining loop, thereby reducing the texture at the end. The overall collapse can be avoided, and the distortion of the joining loop and the occurrence of unevenness on the paper forming surface can be suppressed.

In this case, in a base fabric having a structure in which all the wefts are entangled with the warp forming the joining loop, a weft for regulating the driving yarn in a manner different from the structure is provided at the end. A base fabric having a textured structure in which wefts entangled with a warp forming a joining loop and wefts not entangled with a warp forming a joining loop are uniformly arranged with predetermined regularity to form a joining loop is formed. What is necessary is just to make it the structure which the weft which is not entangled with the warp which is arrange | positioned at the edge part so that a driving yarn can be regulated. This eliminates the need to separately provide a weft for controlling the driving yarn.

The warp yarn forming the joining loop is formed by folding the driving yarn in the thickness direction because the joining core wire passes straight in the width direction. There is a case where the base fabric is folded in the width direction and a case where the base fabric is folded in the width direction. What is necessary is just to make the warp which does not hang a driving thread into a weft, and bend in the thickness direction substantially. Further, in the configuration in which the base fabric is formed of a triple-woven fabric structure in which three warps are provided in the thickness direction, the warp that does not form a joining loop folds the driving yarn onto the weft and folds in a substantially width direction. What should be done.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.

FIGS. 1 and 2 show a first embodiment of a seam felt according to the present invention. This seam felt comprises a nonwoven fiber layer 2 and a base fabric 1 having a four-layer weave structure.
The first to fourth four warp yarns 4 to 7 are arranged on the base fabric 1 from the paper forming surface 3 side in a thickness direction. The weft 8 is entangled with 7.

The two warps 4 and 5 on the paper forming surface 3 side are formed by hooking a driving thread onto a loop forming core wire made of a thread or a similar linear material and folding the loop in the thickness direction. , A joining loop 9 is formed. The core wire 10 is inserted into the joining loop 9 in the width direction while being engaged with the joining loop at the other end, thereby joining both ends. On the other hand, the two machine-side warp yarns 6 and 7 opposite to the paper forming surface 3 are the first and second warp yarns 4.5.
Similarly to the above, the driven yarn is folded in the thickness direction, but the driven yarn is hooked by the weft 12 and folded without forming a joining loop.

Folded portion 11 of third and fourth warps 6 and 7
Is different from the above-described weft 8 and is entangled only with the warps 6 and 7 to form the joining loop 9.
5 is provided so as not to be entangled, and even if the weft yarn 12 is shifted, the warp yarns 4 and 5 are not pulled, so that the inconvenience that the whole structure collapses can be avoided.

FIG. 3 shows a second embodiment of the seam felt according to the present invention. This seam felt is a base fabric 2 having a quadruple weave tissue structure, as in the previous embodiment.
1 and a nonwoven fiber layer 22 laminated and integrated,
The first to fourth four warps 24 to 27 are arranged in the thickness direction from the third side so as to overlap with each other, and
Are entangled, but here, the outer two warps 24
27 forms a joining loop 29 at the end, and the two inner warps 25 and 26 are folded without forming a joining loop, and the folded portion 31 forms the joining loop 29 similarly to the above-described embodiment. The warp yarns 24 and 27 are regulated by a weft yarn 32 that is not entangled.

FIG. 4 shows a third embodiment of the seam felt according to the present invention. This seam felt is similar to the above-described embodiment, and has a base fabric 4
1 and a non-woven fiber layer 42 laminated and integrated,
The first to fourth four warps 44 to 47 are arranged in the thickness direction from the third side so as to overlap with each other, and
However, contrary to the first embodiment, two warp yarns 4 on the machine side opposite to the paper forming surface 43 are entangled.
6 and 47 form a joining loop 49 at the end, and the two warps 44 and 45 on the paper forming surface 43 side are folded back without forming a joining loop. Warp yarn 46 forming a joining loop 49
47 is regulated by a weft 52 which is not entangled.

FIGS. 5 and 6 show a fourth embodiment of the seam felt according to the present invention. This seam felt is obtained by laminating and integrating a nonwoven fiber layer 62 on a base cloth 61 having a triple-woven structure.
The first to third three warps 64 to 66 from the paper forming surface 63 side
Are arranged one on top of the other in the thickness direction.
Is intertwined with the weft 68.

The two warps 64 and 65 on the paper forming surface 63 side
Is formed by folding the driven yarn in the thickness direction as in the above-described embodiment, and forms a joining loop 69 at the end, while the third warp 66 on the machine side is folded without forming the joining loop. The third warp 66
Is different from the warp yarns 64 and 65 in that the driven yarn is folded in the width direction, and the folded portion 71 between the adjacent yarns is entangled only with the warp 66 and is not entangled with the warp yarns 64 and 65. 72.

In the above-described embodiment, the weft on which the driving yarn is hooked passes substantially straight in the width direction inside the folded portion. On the other hand, the weft 72 is deformed by a high-rigidity warp to form the folded portion. 71 is formed in such a manner that it passes inside while being bent in the thickness direction.

FIG. 7 shows a fifth embodiment of the seam felt according to the present invention. This seam felt is made of a base fabric 8 having a triple weave tissue structure, as in the above-described embodiment.
1 and a non-woven fiber layer 82 laminated and integrated,
From the three sides, first to third three warps 84 to 86 are arranged so as to overlap in the thickness direction, and these warps 84 to 86 are added to the weft 88.
Are entangled, but here, the outer two warps 84
86 forms a joining loop 89 at the end, and one inner warp 85 is folded without forming a joining loop, and the folded portion 91 has the same shape as in the previous embodiment.
The warp yarns 84 and 86 forming the joining loop 89 are regulated by a weft yarn 92 that is not entangled.

FIG. 8 shows a sixth embodiment of the seam felt according to the present invention. This seam felt is similar to the above-described embodiment, and has a base fabric 1 having a triple-woven structure.
The first to third three warps 104 to 106 from the paper forming surface 103 side
Are arranged in the thickness direction so that these warps 104-1
Although the weft 108 is entangled with 06, here, two warps 105 and 106 on the machine side opposite to the paper forming surface 103 form a joining loop 109 at the end, contrary to the fourth embodiment. One warp 1 on the paper forming surface 103 side
04 is folded without forming a joining loop, and the folded portion 111 is regulated by a weft 112 that is not entangled with the warps 105 and 106 forming the joining loop 109, as in the above-described embodiment.

FIGS. 9 to 11 show a seventh embodiment of the seam felt according to the present invention. This seam felt is obtained by laminating and integrating a nonwoven fiber layer 122 on a base cloth 121 having a triple-woven structure.
The first to third three warps 1 from the paper forming surface 123 side
24 to 126 are arranged one on top of another in the thickness direction.
The two warps 124 and 125 on the 23 side are formed by folding the driven yarn in the thickness direction similarly to the fourth embodiment, and form a joining loop 127 at the end, while the second side on the machine side. The three warps 126 are formed by folding the driven yarn in the width direction without forming a joining loop, and a folded portion 128 is formed between adjacent yarns.

In each of the first to sixth embodiments, in the structure in which all the wefts are entangled with the warp forming the joining loop, the special structure which is different from these wefts and is not entangled with the warp forming the joining loop is used. In contrast to the configuration in which a weft of a simple entangled form is provided at the time of the loop to regulate the driving yarn,
Here, the base fabric 121 has a uniform structure in which the wefts are arranged with a predetermined regularity over the entire base cloth 121. In particular, in this case, all the wefts have a duality in which two wefts overlap in the thickness direction.

That is, as shown in FIG. 10, the weft 130a closest to the end on the paper forming surface 123 side is composed of two warps 1
Entangled with 24.125, the weft 130b on the machine side
Is entangled only with the warp 126. Next paper forming surface 12
The weft 131a on the third side differs from the weft 130a in FIG.
As shown in (1), the warp yarn 124 is entangled with one warp 124, and the weft 131b on the machine side is entangled with two warps 125 and 126. Further, the adjacent wefts 132a and 132b take the same entanglement form as the wefts 130a and 130b, and the adjacent wefts 133a and 133b are the wefts 131a and 131b.
It takes the same entanglement form. Other wefts are provided in such a manner as to repeat the same entanglement form as the above-described end weft.

In this configuration, the driving yarn forming the third warp 126 on the machine side is regulated by the weft 130b on the machine side closest to the end, and is deformed by the warp 126 having high rigidity. It is a form that passes while bending in the vertical direction. Since the weft 130b is not entangled with the warp yarns 124 and 125 forming the joining loop 127 as described above, the structure of the end portion is not entirely collapsed when regulating the driven yarn, and the distortion of the joining loop 127 is reduced. In addition, the occurrence of irregularities on the paper forming surface 123 can be suppressed.

FIGS. 12 to 15 show an eighth embodiment of the seam felt according to the present invention. This seam felt is formed by laminating and integrating a nonwoven fiber layer 142 on a base cloth 141 having a triple weave structure as in the above-described embodiment, and the first to third three sheets are formed from the paper forming surface 143 side. Warp 14
4 to 146 are arranged in the thickness direction so as to overlap with each other.
The two warps 144 and 145 on the three sides form a joining loop 147 at the end, and the third warp 146 on the machine side is
The driven yarn is folded in the width direction without forming a joining loop, and a folded portion 148 is formed between adjacent yarns.

Here, similarly to the above embodiment, the base fabric 1 is used.
41 has a uniform texture structure in which the wefts are arranged with a predetermined regularity throughout the entirety, but unlike the above embodiment, wefts having no duality are incorporated. That is, as shown in FIG. 13, the weft 150a closest to the end on the paper forming surface 143 side is entangled with the two warps 144 and 145, and the machine side weft 150b is entangled only with the warp 146. The adjacent wefts 151a and 151b also have the same entangled form. Further, as shown in FIG. 14, the next weft 152b is tangled with the two warp yarns 145 and 146 on the machine side, and the paper forming surface 143 side is not provided with a weft overlapping therewith. The adjacent wefts 153a and 153b have the same entanglement form as the wefts 150a and 150b. Furthermore, the next weft 154
As shown in FIG. 15, a is entangled with the two warps 144 and 145 on the paper forming surface 143 side, and no overlapping weft is provided on the machine side. Other wefts are provided in such a manner as to repeat the same entanglement form as the above-described end weft.

In this configuration, the weft 150b on the machine side closest to the end is the third warp 14 which does not form a joining loop.
The weft 1
Since 50b is not entangled with the warps 144 and 145 forming the joining loop 147 as described above, it is possible to avoid collapse of the structure at the end.

In each of the seventh and eighth embodiments,
In the structure structure in which the weft yarns are arranged uniformly with a predetermined regularity, an example in which all or a part of the weft yarns have duality has been described, but the present invention relates to a weft yarn that is not entangled with the warp yarn forming the joining loop. If it exists, it can be applied in the same manner regardless of the structure, and the weft that does not become entangled with the warp that forms the joining loop, the end of the end that can control the driving yarn that forms the warp that does not form the joining loop. It may be arranged at a required position.

[0031]

As described above, according to the present invention, since only one joining loop is formed, the joining operation by inserting the core wire can be performed efficiently. In particular, by providing a weft on which the driving thread is hooked to fold without forming a joining loop so as not to be entangled with the warp forming the joining loop, the warp forming the joining loop when the driving thread is folded is provided. The problem of pulling the entangled weft partially can be avoided, and even if the weft that regulates the driving yarn shifts, it does not affect the warp that forms the joining loop, so the entire end structure is broken As a result, the distortion of the joining loop can be eliminated and the occurrence of irregularities on the paper forming surface can be suppressed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a seam felt according to the present invention.

FIG. 2 is a cross-sectional view in the width direction of the seam felt shown in FIG.

FIG. 3 is a longitudinal sectional view showing a second embodiment of the seam felt according to the present invention.

FIG. 4 is a longitudinal sectional view showing a third embodiment of the seam felt according to the present invention;

FIG. 5 is a longitudinal sectional view showing a fourth embodiment of the seam felt according to the present invention;

6 is a cross-sectional view of the seam felt shown in FIG. 5 in a width direction.

FIG. 7 is a longitudinal sectional view showing a fifth embodiment of the seam felt according to the present invention;

FIG. 8 is a longitudinal sectional view showing a sixth embodiment of the seam felt according to the present invention.

FIG. 9 is a longitudinal sectional view showing a seventh embodiment of the seam felt according to the present invention.

10 is a cross-sectional view in the width direction of the seam felt shown in FIG. 9 and shows a state of being cut along the line XX in FIG. 9;

11 is a cross-sectional view of the seam felt shown in FIG. 9 in a width direction, showing a state of being cut along a line XI-XI in FIG. 9;

FIG. 12 is a longitudinal sectional view showing an eighth embodiment of the seam felt according to the present invention;

13 is a cross-sectional view in the width direction of the seam felt shown in FIG. 12, showing a state of being cut along a line XIII-XIII in FIG.

14 is a cross-sectional view in the width direction of the seam felt shown in FIG. 12, showing a state of being cut along the line XIV-XIV in FIG.

15 is a cross-sectional view in the width direction of the seam felt shown in FIG. 12, showing a state of being cut along the line XV-XV in FIG.

[Explanation of symbols]

1, 21, 41, 61, 81, 101, 121, 141
Base fabric 2, 22, 42, 62, 82, 102, 122, 142
Non-woven fiber layer 3, 23, 43, 63, 83, 103, 123, 143
Paper forming surface 4, 5, 24, 27, 46, 47, 64, 65, 84
86 ・ 105 ・ 106 ・ 124 ・ 125 ・ 144 ・ 14
5. Warp forming a joining loop 6. 7, 25, 26, 44, 45, 66, 85, 104
· 126 · 146 Warp yarn that does not form a joining loop 8 · 28 · 48 · 68 · 88 · 108 · 130a to 13
3a ・ 130b〜133b ・ 150a ・ 151a ・ 15
3a, 154a, 150b to 153b Weft 9, 29, 49, 69, 89, 109, 127, 147
Joining loop 10 core wire 11.31.51.71.91.111.128.14
8 Folded part 12, 32, 52, 72, 92, 112, 130b, 1
50b Weft that regulates driving yarn

Claims (5)

[Claims] 1. A base fabric comprising a multi-woven fabric structure in which three or more warp yarns are superposed in a thickness direction, and a driving yarn serving as a warp of the base fabric is formed at an end in a thickness direction. A seam felt in which a joining loop is formed by folding back, wherein the pair of warps overlapping in a thickness direction is formed by folding a driving yarn so that the joining loop is formed,
On the other hand, the seam felt is characterized in that the remaining warp yarn is formed by hooking the driven yarn around the weft yarn and forming the joining loop without forming the joining loop. 2. A weft thread which is hooked to fold back without forming the joining loop and is provided so as not to be entangled with the warp forming the joining loop. The seam felt according to claim 1. 3. The base fabric according to claim 1, wherein the wefts entangled with the warp forming the joining loop and the wefts not entangled with the warp forming the joining loop are uniformly arranged as a whole with a predetermined regularity. The seam felt according to claim 2, wherein a weft having a texture structure and not entangled with the warp forming the joining loop is disposed at an end so as to regulate the driven yarn. 4. The base fabric has a quadruple weave fabric structure in which four warp yarns are superposed in the thickness direction, and the warp yarns that do not form the joining loop hang a driving yarn on the weft yarn. The seam felt according to claim 2 or 3, wherein the seam felt is formed by folding back substantially in a thickness direction. 5. The base fabric has a triple woven fabric structure in which three warp yarns are superposed in the thickness direction, and the warp yarns that do not form the joining loop hang a driven yarn on the weft yarn. The seam felt according to claim 2, wherein the seam felt is folded in a width direction.