JP2023183602A - Seam felt for paper making and connecting method thereof - Google Patents

Abstract

To provide a seam felt for paper making allowing a core wire to be easily inserted into loops.SOLUTION: A seam felt for paper making 1 has a felt body 2 with loops on both ends in a length direction, a pair of temporary connectors 3 used to engage the loops on both ends with each other, and a stiffening tool 4 to reinforce bending rigidity in a width direction of the felt body 2 in the vicinity of loops 7. The pair of temporary connectors 3 is connected with each other and disposed in a predetermined range of both ends of the felt body 2, and both ends of the felt body 2 are abutted against each other so that abutting parts 9 are formed into a mountain shape. At that time, the bending rigidity in the width direction is reinforced by the stiffening tool 4, therefore, the loops 7 aligned in the width direction are hard to be bent and a core wire 8 can be easily inserted into the loops 7.SELECTED DRAWING: Figure 3

Description

The present invention relates to a papermaking seam felt provided with an auxiliary tool for joining both ends to each other, and a method for joining the same.

Papermaking felt is used in the press section of a papermaking machine to convey the wet paper that is to be squeezed. In order to improve the work efficiency when installing papermaking felt into a papermaking machine, we use so-called seam felt, which is made by drawing felt with an end into a felt running path, or so-called felt run, and then joining both ends to make it endless. is widely used. In this type of seam felt, the loops formed at the ends in the length direction by folding back the warp yarns that make up the base fabric are interlocked alternately so that the loop holes are aligned with each other, and the core wire is inserted into the common hole formed by this. A common configuration is to connect both ends through the wire.

Since joining such seam felt requires precise manual work, it is desirable to perform the work with the edges of the felt stabilized. Furthermore, in order to make it easier to visually confirm the interlocking state of the loops and the insertion state of the core wire, it is desirable to butt the ends of the felt in a mountain shape. Therefore, by sewing a temporary joint with a sliding zipper to the end of the felt in advance, and hooking the zipper after the felt has been drawn in, both ends of the felt are temporarily fastened together. It is known that both ends are held against each other in a mountain shape (Patent Documents 1 to 3).

Japanese Unexamined Patent Publication No. 62-250294 Japanese Patent Application Publication No. 2005-264402 Japanese Patent Application Publication No. 2010-275671

In recent years, the demand for lightweight seam felt has increased due to the demands of paper manufacturing machines. The lightweight seam felt has lower rigidity than conventional products. In particular, if the bending rigidity in the width direction is low, when the ends of the seam felt are butted together in a mountain shape, it becomes difficult to align the loops in the width direction, making it difficult to insert the lead wire connected to the core wire into the loops. Even in the part where the lead wire has already been inserted, the rows of loops lined up in the width direction are bent, which increases the frictional resistance between the lead wire and the loops, making it difficult to insert the lead wire into the loop hole. . Engaging the loops and threading the lead wire can be done within 10 minutes per meter with relatively heavy and highly rigid seamed felt, whereas it can take more than 30 minutes per meter with relatively light and less rigid seamed felt. In the worst case scenario, the core wire could not be completely inserted and the wire could be unhooked.

SUMMARY OF THE INVENTION In view of the above background, an object of the present invention is to provide a seam felt for paper making that allows easy work of interlocking loops and inserting a core wire into the loops.

In order to solve the above problems, a papermaking seam felt (1, 21, 31, 41) according to an aspect of the present invention is provided with a plurality of loops (7) to be interlocked with each other at both ends in the length direction, In the length direction, a pair of abutting parts (9) defined in a predetermined range from both ends toward the center in the length direction, and an intermediate part (10) defined between the pair of abutting parts. ), the felt body (2) is removably attached to the boundary between the pair of abutting portions and the intermediate portion of the felt body, and is capable of engaging and disengaging with each other. A pair of temporary joints (3) that hold both end portions abutting each other so that the pair of abutting portions form a mountain shape in the engaged state, and at least one of the pair of abutting portions. and a stiffener (4, 32) attached to the stiffener (4, 32) for reinforcing the bending rigidity in the width direction of at least one of the pair of abutting portions.

According to this aspect, since the stiffener reinforces the bending rigidity in the width direction of the portion of the felt body near the loop, it becomes easier to maintain the state in which the loop hole is aligned substantially straight in the width direction, and the loop This makes it easier to engage the wires and pass the core wire through the hole in the loop, reducing work time.

In the papermaking seam felt (1) of the above embodiment, the stiffener (4) may have a plate shape and be sewn directly to the at least one of the pair of abutting portions (9).

According to this aspect, since the stiffener is sewn directly to the abutting portion, an increase in the number of parts can be suppressed.

In the papermaking seam felt (21, 31, 41) of the above aspect, the stiffener (4, 32) is held by being sewn directly to the at least one of the pair of abutting portions (9). It may further include a holding member (22, 33, 42).

According to this aspect, there is no need to sew on a stiffener that requires relatively high rigidity, and a material that is easy to sew can be selected as the holding member. The stiffener can be attached to the abutment by a simple sewing operation.

In the papermaking seam felt (31) of the above aspect, the holding member (33) is attached to the surface of the felt body (2) on the opposite side to the side on which the pair of temporary joints (3) are attached. , the stiffener (32) is sewn directly to the at least one of the pair of abutting portions with both ends overlapped so as to define a tube opening in the width direction; The holding member may be inserted into the cylinder.

According to this aspect, the stiffener wrapped in the holding member can be used as a knob. In other words, when the loops provided at both ends of the felt body in the longitudinal direction are engaged with each other, the worker's hands can touch the stiffener instead of the loops, and the loops can absorb moisture due to the sweat of the worker's hands. Deformation or deformation of the loop due to being pushed in by hand is prevented, making it easier to engage the loops and insert the core wire.

In the papermaking seam felt (41) of the above aspect, the holding member (42) includes a first holding member (43) sewn directly to the at least one of the pair of abutting portions (9); a second holding member (44) to which the stiffener (4) is attached, and the first and second holding members may be engaged with each other by a hook and loop fastener.

According to this aspect, the thickness of the stiffener is not limited. Further, in order to facilitate the work of engaging the loops, the stiffener can be divided in the width direction, and the stiffener can be partially attached or detached according to the progress of the work of engaging the loops.

The papermaking seam felts (1, 21, 31, 41) of the above embodiments may further include an LED tape (15) affixed to the stiffeners (4, 32).

According to this aspect, when the LED tape is turned on, the loops emit light due to the optical fiber effect, making it easy to visually engage the loops.

In the papermaking seam felt (1, 21, 31, 41) of the above aspect, the edge of the stiffener (4, 32) on the proximal side to the loop (7) extends from the proximal end of the loop to the The stiffener may be spaced apart by 1 cm or more in the length direction, and an edge of the stiffener distal to the loop may be located within 10 cm from the proximal end of the loop in the length direction.

By arranging the stiffener at such a position, the stiffness in the width direction of the portion of the felt body 2 near the loops is strengthened, and the loops are allowed to move to a certain extent, making it easier to engage the loops. Become.

In the papermaking seam felt (1, 21, 31, 41) of the above aspect, the bending stiffness in the width direction of the stiffener (4, 32) is 80% of the bending stiffness in the width direction of the felt body. or more and 300% or less, and the edge of the stiffener on the proximal side to the loop (7) is separated from the proximal end of the loop by 2 cm or more in the length direction, and The distal edge of the loop may be located within 5 cm from the proximal end of the loop in the length direction.

According to this aspect, the balance between rigidity and permissibility of movement of the loops is further improved, and the work of engaging the loops becomes easier.

An aspect of the present invention is a method for joining the both ends of the papermaking seam felt (1, 21, 31, 41) according to the above aspect, in which the both ends are butted against each other, and the pair of temporary joining tools (3), engaging the plurality of loops (7) with each other, and inserting the core wire (8) into the holes of the plurality of interlocked loops; and the pair of temporary joints and removing the stiffener (4, 32) from the felt body (2).

According to this aspect, it is possible to easily engage the loops and insert the core wire into the loop hole.

According to the aspect described above, even if the seam felt is lightweight and has low rigidity, the papermaking tool is removably attached with a joining aid that can easily perform the work of interlocking the loops and inserting the core wire into the loop holes. Seam felt can be provided for.

A perspective view showing a papermaking seam felt according to a first embodiment A perspective view showing the felt body of the papermaking seam felt according to the first embodiment A vertical cross-sectional view showing the vicinity of the joint of the papermaking seam felt according to the first embodiment A plan view showing the butting portion of the papermaking seam felt according to the first embodiment A plan view showing the butting portion of the papermaking seam felt according to the second embodiment A plan view showing the butting portion of the papermaking seam felt according to the third embodiment A vertical cross-sectional view showing the vicinity of the joint of the papermaking seam felt according to the third embodiment A longitudinal cross-sectional view showing the butting part of the papermaking seam felt according to the fourth embodiment

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a joint part of a papermaking seam felt 1 according to a first embodiment. In the following description, the term "length direction" refers to the length direction (longitudinal direction) of the papermaking seam felt 1, and the term "width direction" refers to the width direction (weft direction) of the papermaking seam felt 1. means.

As shown in FIG. 1, a papermaking seam felt 1 consists of a felt body 2 that is attached to a papermaking machine (not shown) such as a paper machine or a pulp machine to transport wet paper to be water-squeezed, and a felt body 2 that A pair of temporary joint tools 3 are used to join both ends in the length direction and are removed after joining both ends. and a stiffener 4 that is removed after the parts are joined.

FIG. 2 is a perspective view of the felt main body 2. As shown in FIG. 2, the felt body 2 includes a base fabric 5 and a batt fiber layer formed by needling a short fiber sheet of synthetic resin such as polyamide, polyester, polyethylene, polypropylene, or polyvinyl chloride into the base fabric 5. 6. A plurality of loops 7 are formed at both ends of the base fabric 5 in the length direction, respectively. The felt body 2 is used in a press part of a paper making machine, and the loops 7 provided at both ends are engaged with each other, and the core wire 8 (see Fig. 3) is inserted into the hole defined by the loops 7 to join the ends. This makes it endless, the inner surface (running surface side) is supported by a roll (not shown) of a paper making machine, etc., and the outer surface (paper making surface side) supports the wet paper web. Each loop 7 is formed by folding back the warp threads of the base fabric 5. The loops 7 protrude from the batt fiber layer 6. In the following description, the "proximal end" of the loop 7 means the portion of the loop 7 that begins to protrude from the batt fiber layer 6.

FIG. 3 is a longitudinal cross-sectional view of the seam felt 1 for papermaking around the joint. As shown in FIGS. 1 and 3, the felt main body 2 has a pair of abutting portions 9 defined in a predetermined range from both ends toward the center in the length direction, and a pair of abutting portions 9 in the length direction. and an intermediate portion 10 defined between. The lengths of the pair of abutting portions 9 in the height direction may be equal to each other or may be different from each other.

Each of the pair of temporary joints 3 includes a fabric portion 11 fixed to the surface of the felt body 2 and a fastener element portion 12 attached to one end edge of the fabric portion 11. Moreover, a slider 13 for engaging the pair of fastener element parts 12 with each other and for releasing the engagement is slidably attached to either one of the pair of fastener element parts 12. That is, the pair of temporary joints 3 are joined to each other by a wire fastener (slide fastener).

The pair of temporary joint tools 3 are arranged so that the fastener element parts 12 can face each other in the vicinity of the edge of the fabric part 11 opposite to the edge to which the fastener element part 12 is attached. The felt body 2 is sewn by thread 14. The fastener element portion 12 extends parallel to the width direction. The sewing line of the thread 14 used to sew the fabric portion 11 onto the felt body 2 extends in the width direction and forms the boundary between the abutment portion 9 and the intermediate portion 10 in the felt body 2 . The distance from this sewing line to the fastener element portion 12 is shorter than the distance from this sewing line to the loop 7. Therefore, when the fastener element portions 12 of the pair of temporary joints 3 are engaged with each other and both ends of the felt body 2 in the length direction are butted against each other, the abutted portions 9 are formed such that the abutted ends are apexes. It forms a mountain shape. The method of sewing the thread 14 used to sew the temporary joint 3 onto the felt body 2 is preferably double chain stitching using a sewing machine.

FIG. 4 is a plan view of one abutting portion 9 and its vicinity. As shown in FIGS. 1, 3, and 4, the stiffener 4 is a plate-shaped member, and is sewn to the butt portion 9 of the felt body 2 with thread 14'. The stiffener 4 has a length in the length direction of about 3 cm or more and about 10 cm or less. The stiffener 4 is arranged between the proximal end of the loop 7 and the thread 14 that sews the fabric part 11 to the felt body 2. If the loop 7 does not have a certain amount of room for movement, it will be difficult to engage the loop 7, so the edge of the stiffener 4 proximal to the loop 7 should be moved from the proximal end of the loop 7 toward the center of the length. It is preferable that the distance is 1 cm or more, and it is more preferable that the distance is 2 cm or more. The distal edge of the stiffener 4 with respect to the loop 7 is preferably located within a range of 10 cm from the proximal end of the loop 7 in the length direction, and more preferably within a range of 5 cm. It is preferable that both ends of the stiffener 4 in the width direction are aligned with both ends of the felt body 2 or located outside both ends of the felt body 2 in the width direction. The stiffener 4 is made of, for example, resin such as polyethylene or polypropylene, cardboard, or resin-treated nonwoven or woven fabric.

The stiffener 4 has a hardness that does not damage the sewing machine needle. The bending rigidity in the width direction of the stiffener 4 is 80% or more and 300% or less, preferably 90% or more and 200% or less, of the widthwise bending rigidity of the felt body 2 at the part where the stiffener 4 is attached. and more preferably 100% or more and 150% or less. It is preferable that the stiffener 4 is attached to the surface of the felt body 2 opposite to the surface to which the pair of temporary joints 3 are attached. The stiffener 4 has a hardness that does not damage the sewing machine needle. It is preferable that the sewing line of the thread 14' used to sew the stiffener 4 to the felt body 2 extends in the width direction, and extends over the entire width of the portion where the stiffener 4 and the felt body 2 overlap each other. More preferably, it extends. The method of sewing the thread 14' for sewing the stiffener 4 onto the felt body 2 is preferably double chain stitching using a sewing machine.

An LED tape 15 may be attached to the back surface of the stiffener 4. In that case, the LED tape 15 is placed between the stiffener 4 and the felt body 2, and the LEDs face the felt body 2, so that the felt body 2 side emits light. The LED tape 15 is made by processing a large number of LEDs together with wiring into a flat tape shape. The LED tape 15 may be attached to only one of the stiffeners 4 attached to both ends of the felt body 2, or the LED tapes 15 of mutually different colors may be attached to the two stiffeners 4.

With reference to FIGS. 1 and 3, a method for joining both ends of the papermaking seam felt 1 in the length direction will be described.

After the felt body 2 is manufactured at a manufacturing factory of the seam felt 1 for paper manufacturing, the pair of temporary joints 3 and the stiffeners 4 are sewn to the felt body 2. The papermaking seam felt 1 is shipped from a manufacturing factory and transported to a papermaking factory. Workers will perform the following tasks at the paper mill.

First, the papermaking seam felt 1 is drawn into the travel path of the papermaking machine, and both ends of the felt body 2 are brought close to face each other.

Next, in the pair of temporary joints 3, the slider 13 is slid over the pair of fastener element parts 12 to engage the fastener element parts 12 with each other. Since the pair of temporary joints 3 are attached near both ends of the felt body 2, both ends of the felt body 2 can be held in a state where they are brought together. At this time, the distance from the sewing line of the thread 14 sewing the pair of temporary joints 3 to the felt body 2 to the fastener element part 12 is shorter than the distance from this sewing line to the loop 7, so the butt part 9 has a convex mountain shape on the side opposite to the temporary joint tool 3.

Next, the holes of the loops 7 are aligned in the width direction so that the loops 7 at both ends in the length direction are arranged alternately from one end in the width direction to the other end. A lead wire (not shown) connected to the core wire 8 is passed through the hole. When the lead wire reaches the other end in the width direction, pull the lead wire and pass the core wire 8 through the hole of the loop 7.

Thereafter, the slider 13 is slid in the opposite direction to release the engagement of the fastener element portion 12. Furthermore, the threads 14 and 14' are untied, and the temporary joint tool 3 and stiffener 4 are removed from the felt main body 2.

The effects of the above embodiment will be explained.

Since the stiffener 4 reinforces the bending rigidity in the width direction of the portion of the felt body 2 near the loop 7, it becomes easier to maintain the state in which the holes of the loop 7 are aligned substantially straight in the width direction, and the lead wire and The work of passing the core wire 8 through the hole of the loop 7 becomes easier, and the work time is shortened.

Further, since the stiffener 4 has a plate shape, it reinforces not only the bending rigidity in the width direction of the portion of the felt body 2 near the loop 7 but also the bending rigidity in the length direction. Therefore, when the abutted portions 9 are abutted in a mountain shape, the abutted portions 9 are prevented from warping in the length direction, and the work of passing the lead wire and the core wire 8 through the holes of the loops 7 is facilitated.

Since the stiffener 4 is sewn directly to the felt body 2, an increase in the number of members is suppressed.

Since the stiffener 4 increases the bending rigidity, there is less load on the manufacturing process compared to the case where the felt body 2 is processed with resin to increase the bending rigidity.

Since the sewing method of the threads 14, 14' is a double chain stitch, by pulling one of the sewing threads forming the double chain stitch, the threads 14, 14' are easily unraveled, and the temporary joint 3 and the stiffener are sewn together. 4 from the felt body 2 becomes easier.

When the LED tape 15 is attached to the stiffener 4, by lighting the LED tape 15 when the loop 7 is engaged, the loop 7 will emit light due to the optical fiber effect, making it easy to visually engage the loop 7. Become. When the LED tape 15 is provided only on one of the stiffeners 4 at both ends of the papermaking seam felt 1, or when the LED tapes 15 are provided in different colors at both ends, the loops 7 at each end are They can be visually distinguished by their differences and colors, making it easy to confirm whether or not they are arranged alternately.

With reference to FIG. 5, a papermaking seam felt 21 according to a second embodiment will be described. In the description, the same reference numerals are given to the same components as in the already explained embodiments, and the explanations are omitted (the same applies to the explanations of the third and fourth embodiments). FIG. 5 is a plan view of the vicinity of one abutting portion 9 of the papermaking seam felt 21. As shown in FIG. The papermaking seam felt 21 according to the second embodiment differs from the first embodiment in the way the stiffener 4 is attached.

The papermaking seam felt 21 includes a felt body 2, a pair of temporary joints 3 (see FIG. 1), a stiffener 4, and is sewn to the felt body 2 with a thread 14' to attach the stiffener 4. and a holding member 22 for holding.

The holding member 22 is a cloth-like member such as a nonwoven fabric or a woven fabric, and preferably a spunbond nonwoven fabric. When the holding member 22 is made of nonwoven fabric, the material is not particularly limited, but polypropylene, polyethylene, nylon, polyester, etc. can be used. For example, as the holding member 22, a polypropylene nonwoven fabric having a basis weight of 40 g/m ² may be used. The length of the holding member 22 in the length direction is longer than the length of the stiffener 4 in the length direction. It is preferable that both ends of the holding member 22 in the width direction align with both ends of the felt body 2 or be located outside of both ends of the felt body 2 in the width direction.

The holding member 22 is sewn to the abutting portion 9 with a thread 14' at two locations spaced apart from each other by the length of the stiffener 4 in the length direction, and the sewing line of the thread 14' extends in the width direction. do. By being sewn in this manner, the holding member 22 forms a pocket-shaped portion on the surface of the abutting portion 9 with both widthwise ends open. The stiffener 4 is not directly attached to the felt body 2, but is attached to the felt body 2 via the holding member 22 by being held within this pocket-shaped portion. The position of the holding member 22 with respect to the felt body 2 is determined so that the stiffener 4 is placed in the same position as in the first embodiment with respect to the felt body 2. Note that one of the two threads 14' may be used to sew both the temporary joint tool 3 and the holding member 22 to the felt body 2. After the lengthwise ends of the felt body 2 are joined together, the holding member 22 is removed from the felt body 2, thereby removing the holding member 22 from the felt body 2.

According to such a configuration, there is no need to directly sew the stiffener 4, which is required to have a predetermined rigidity, to the felt body 2. Therefore, compared to the first embodiment, the thickness of the stiffener 4 is not limited, and by using a material that is easy to sew as the holding member 22, the work of attaching the stiffener 4 to the felt body 2 is easy. This makes it easier to do this and prevents damage to the sewing machine needle.

When spunbond nonwoven fabric is used as the holding member 22, the holding member 22 becomes lighter, has appropriate elasticity and can hold the stiffener 4 without loosening, is easy to sew with a sewing machine, and can be torn to pieces at the seam after being sewn. The effect is that it is difficult. Similarly to the first embodiment, an LED tape 15 (see FIG. 4) may be attached to the stiffener 4. In this case, the same effect as the LED tape 15 of the first embodiment can be obtained, and the stiffener 4 Since the LED tape 15 is not sewn, the stiffener 4 with the LED tape 15 can be used repeatedly.

A papermaking seam felt 31 according to a third embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a plan view of the vicinity of one abutment part 9 of the papermaking seam felt 31, and FIG. 7 is a longitudinal sectional view of the vicinity of the joint part of the papermaking seam felt 31.

The papermaking seam felt 31 includes a felt body 2, a pair of temporary joints 3 (see FIG. 1), a rod-shaped or tube-shaped stiffener 32, and is sewn onto the felt body 2 with a thread 14'. , and a holding member 33 that holds the stiffener 32.

It is preferable that the length of the stiffener 32 in the width direction is equal to or longer than the length of the felt body 2 in the width direction. As the stiffener 32, for example, a polyurethane tube having a diameter (outer diameter) of 6 mm or more and 8 mm or less may be used. The stiffness of the stiffener 32 and its position relative to the felt body 2 are the same as those of the stiffener 4 of the first and second embodiments (see FIGS. 4 and 5).

The holding member 33 is a cloth-like member made of the same material as the holding member 22 of the second embodiment (see FIG. 5). The holding member 33 is sewn to the felt main body 2 with a thread 14' in a state of being folded in two so that the folds are parallel to the width direction. The holding member 33 defines a cylindrical portion between the fold line and the thread 14', and the holding member 33 is held in this cylindrical portion.

According to such a configuration, effects similar to those described in the description of the second embodiment can be obtained. Further, the stiffener 32 wrapped in the holding member 33 can be used as a knob. That is, when the loops 7 provided at both ends of the felt body 2 in the length direction are engaged with each other, the worker's hands can touch the stiffeners 32 instead of the loops 7, and the worker's hands can be sweaty. This prevents deformation of the loop 7 due to moisture absorption and deformation of the loop 7 due to being pushed in by hand, making it easier to engage the loops 7 and insert the core wire 8.

With reference to FIG. 8, a papermaking seam felt 41 according to a fourth embodiment will be described. FIG. 8 is a longitudinal cross-sectional view of the vicinity of one abutting portion 9 of the papermaking seam felt 41. As shown in FIG.

The papermaking seam felt 41 includes a felt body 2, a pair of temporary joints 3 (see FIG. 1), a stiffener 4, and a holding member 42 that is attached to the abutting portion 9 and holds the stiffener 4. Equipped with.

The holding member 42 includes a first holding member 43 sewn to the felt body 2 with a thread 14', and a second holding member 44 to which the stiffener 4 is fixed. The first and second holding members 43 and 44 are arranged such that the first holding member 43 has a surface opposite to the side facing the felt body 2, and the second holding member 44 has a surface opposite to the side to which the stiffener 4 is fixed. It is a hook-and-loop fastener whose side surfaces engage with each other.

According to such a configuration, the thickness of the stiffener 4 is not limited as compared to the first embodiment. Further, in order to facilitate the engagement work of the loops 7, the stiffener 4 can be divided in the width direction, and the stiffener 4 can be partially attached or detached according to the progress of the engagement work.

This concludes the description of the specific embodiments, but the present invention is not limited to the above embodiments and modifications, and can be implemented in a wide range of modifications. Instead of a wire fastener, the pair of temporary joints may be temporarily joined using a point fastener provided with a plurality of snap buttons or the like, or may be temporarily joined using a hook and loop fastener, and each of the temporary joints main bodies may be temporarily joined. A plurality of holes may be provided, and the temporary bonding may be performed using a string or the like inserted through these holes. The stiffener may be attached to only one of the pair of abutting portions instead of being attached to both of the pair of abutting portions. The LED tape may be attached to the stiffeners of the second to fourth embodiments.

1, 21, 31, 41: Seam felt for papermaking 2: Felt body 3: Temporary joint 4, 32: Stiffener 7: Loop 8: Core wire 9: Butt part 10: Intermediate part 14, 14': Thread 15: LED tape 22, 33, 42: Holding member 43: First holding member 44: Second holding member

Claims (9)

A plurality of loops to be interlocked with each other are provided at both ends in the length direction, and a pair of abutting portions defined in a predetermined range from the both ends toward the center in the length direction in the length direction; a felt body divided into an intermediate portion defined between a pair of abutting portions;
It is removably attached to the boundary between the pair of abutting portions and the intermediate portion of the felt body, and is capable of engaging and disengaging with each other, and in the mutually engaged state, the pair of abutting portions a pair of temporary joints that hold the ends abutting each other so as to form a mountain shape;
A seam felt for paper making, comprising: a stiffener attached to at least one of the pair of abutting parts to reinforce the bending rigidity in the width direction of the at least one of the pair of abutting parts. The papermaking seam felt according to claim 1, wherein the stiffener has a plate shape and is sewn directly to the at least one of the pair of abutting portions. The papermaking seam felt according to claim 1, further comprising a holding member that is sewn directly to the at least one of the pair of abutting portions and holds the stiffener. The holding member has both ends overlapped on a surface of the felt body opposite to the side to which the pair of temporary joints are attached so as to define a tube opening in the width direction. sewn directly to the at least one of the pair of abutting portions in the state,
The papermaking seam felt according to claim 3, wherein the stiffener is inserted into the cylinder of the holding member. The holding member includes a first holding member sewn directly to the at least one of the pair of abutting portions, and a second holding member to which the stiffener is attached,
The papermaking seam felt according to claim 3, wherein the first and second holding members are engaged with each other by a hook-and-loop fastener. The papermaking seam felt according to claim 1, further comprising an LED tape affixed to the stiffener. The proximal edge of the stiffener with respect to the loop is 1 cm or more away from the proximal end of the loop in the length direction, and the distal edge of the stiffener with respect to the loop is separated from the proximal end of the loop by 1 cm or more. The seam felt for papermaking according to any one of claims 1 to 6, which is located within a range of 10 cm from the base end in the length direction. The bending stiffness of the stiffener in the width direction is 80% or more and 300% or less of the bending stiffness of the felt body in the width direction,
The proximal edge of the stiffener with respect to the loop is 2 cm or more away from the proximal end of the loop in the length direction, and the distal edge of the stiffener with respect to the loop is 2 cm or more apart from the proximal end of the loop in the length direction. The papermaking seam felt according to claim 7, wherein the felt is located within 5 cm from the base end of the loop in the length direction. A method for joining the both ends of the papermaking seam felt according to claim 1,
abutting the two end portions against each other and engaging the pair of temporary joints with each other;
interlocking the plurality of loops with each other and inserting a core wire into the holes of the plurality of interlocked loops;
a step of removing the pair of temporary joints and the stiffener from the felt body.

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