JPH1032008A - Winding tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase bending and the compressing strength at a low stranding density, to increase the braiding speed, and to reduce the cost, by stranding single yarns with a prescribed yarn count and a prescribed number, using then to wefts of a glass fiber, and braiding them at a prescribed weaving density. SOLUTION: A winding tube used for the electrode plate or the like of a clad type lead storage battery is manufactured by impregnating a curing agent solution to a winding sleeve in which the wafts and the warps made of a glass fiber are waven in a tubular form, and drying it. In this case, a braiding yarn made by bounding two lines of single yarns with the yarn count 50 to 90 as the wefts, and stranded at the stranding number 1.5 to 4.5, is wound at the weaving density 15 to 23 scale division/25mm. The single yarns with yarn count 10 to 180, and stranding number 0.5 to 3.0 are used as the warps, favorably. By using single yarns with the yarn count more than 50 as the wefts, the tensile strength of a glass strand is increased, and the generation of a scuffiing and a yarn cutting is suppressed, while by making the stranding number 1.5 to 4.5, the fuzz, and the excessive time and labor in the stranding can be suppressed. Furthermore, by using such wefts, it is made unnecessary to form a stranding yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braided tube made of a braided sleeve and mainly used for an electrode plate of a clad lead-acid battery.

[0002]

2. Description of the Related Art A braided sleeve is a woven fabric obtained by weaving a glass fiber weft and a warp into a tubular shape by a braiding machine.

[0003] To produce a braided tube from this braided sleeve, for example, a single spreader is inserted into the braided sleeve, and then the spreader is moved by passing through the braided sleeve with the spreader stopped at the molding member. After molding, a method of impregnating with a curing agent solution and subsequently passing through a drier to dry and solidify the curing agent solution impregnated in the braided sleeve is adopted.

[0004]

Generally, as the weft of the braided sleeve, a glass single fiber having a diameter of 9 μm is used.
After bundling four glass yarns (hereinafter referred to as “single yarns”) by twisting 00 glass strands with a twist number (number of twists per inch) of 1.0, the glass strands are twisted with a twist number of 4.0. Twisted plied yarn is used. In addition, as the warp, a plied twisted yarn obtained by bundling two single yarns produced in the same manner as the weft and twisting with a twist number of 4.0 is used. Using such a weft and a warp, The cord is woven so that the weave density is 25 stitches / 25 mm.

[0005] The single yarn constituting the ply-twisted yarn is obtained by winding a glass strand on a paper roll to form a cake, then releasing the glass strand from the cake and twisting the cake. In some cases, because of insufficient tensile strength, fluffing occurred in the twisting step, or the thread was occasionally broken.

[0006] When a braided tube is produced from a plied yarn using a fluffed single yarn as described above, a large number of fluffs may be scattered when assembling the lead plate of the lead storage battery, which may hinder the operation of the production machine. There is.

Also, when weft and warp yarns are tied with a braiding machine, fluffing is liable to occur, and 25 threads / 2
With a large weave density of 5 mm, in order to suppress fluffing at the time of lacing, the lacing speed of the braiding machine must be reduced, and it is difficult to reduce production costs.
In particular, weft yarns are subjected to a stronger force in the lace-making process than warp yarns, so that fluff is likely to occur, and further improvement is required.

[0008] Without increasing the fuzz at the time of the string,
In order to increase the braiding speed of the braiding machine, the weaving density of the braided tube may be reduced. However, even if the weaving density is reduced by using the conventional weft and warp yarns, the bending strength and the compressive strength of the braided tube are reduced, and the braided tube is easily broken or buckled during assembly of the lead storage battery.

The present invention has been made in view of the above circumstances. Even if the weaving density is reduced, a high bending strength and a compressive strength can be obtained, and by reducing the weaving density,
It is an object of the present invention to provide a braided tube that can increase the braiding speed of a braiding machine and reduce production costs.

[0010]

The present inventor has repeated various experiments in order to achieve the above-mentioned object, and as a result, the single yarn (diameter: 9 μm, number: 200) used in the conventional braided tube has been obtained.
The count (grams per 1000) of the book is 35, but when the count is 50 or more, a glass strand having a sufficient tensile strength can be obtained. It has been found that a braided tube having a high strength can be obtained even if the weaving density is reduced by using the twisted yarn of -4.5 for the weft yarn, and the present invention has been proposed.

That is, the braided tube of the present invention is a braided tube produced by impregnating a braided sleeve made of glass fiber with a hardener solution into a braided sleeve, and then drying and solidifying the braided sleeve. As a weft, two single yarns having a count of 50 to 90 are bundled, and the number of twists is 1.5 to
Use ply-twisted yarn at 4.5 and weave density is 15-2
It is characterized by 3 eyes / 25 mm.

Further, the braided tube of the present invention is characterized in that a single yarn having a count of 100 to 180 and a twist number of 0.5 to 3.0 is used as the warp yarn.

[0013]

In the braided tube of the present invention, since a single yarn having a count of 50 to 90 is used as a single yarn for the weft yarn, the tensile strength of the glass strand is increased, and fluffing and yarn breakage hardly occur in the twisting process. Since a single twisted yarn obtained by bundling two such single yarns and twisting with a twist number of 1.5 to 4.5 is used, a braided tube having high strength can be obtained even if the weaving density is reduced.

Further, since the braided tube of the present invention can reduce the weaving density, the braiding speed of the braiding machine is increased without increasing the fluffing during the braiding, and the production cost is reduced. Becomes possible.

In the present invention, when a single yarn having a count of 100 to 180 and a twist number of 0.5 to 3.0 is used as the warp yarn, it is not necessary to make a ply twisted yarn, and the ply twisting step can be omitted. Can be reduced.

In the present invention, the reason why the count of the single yarn for weft yarn is limited to 50 to 90 is that if the count is smaller than 50, a glass strand having sufficient tensile strength cannot be obtained, and the count is larger than 90. Then, it becomes difficult to manufacture the braided sleeve with the braiding machine, and it is necessary to increase the thickness of the glass single fiber or to increase the number thereof, thereby increasing the material cost.

Further, in the present invention, the single yarn has a twist of 0.5 to 0.5.
It is preferred to twist at 1.5. That is, if the number of twists is less than 0.5, fluffing is likely to occur in the ply twisting process, and if it is more than 1.5, the twisting process is troublesome and leads to an increase in production cost.

Further, the reason why the number of twists of the plied yarn is limited to 1.5 to 4.5 is that if the number of twists is smaller than 1.5, fuzzing is likely to occur in the process of manufacturing the braided sleeve, and the number of twists is reduced. This is because if it is larger than 4.5, the twisting process takes time and leads to an increase in production cost.

Further, in the present invention, the weaving density is set to 23 meshes / 25 mm or less, thereby making it possible to reduce the production cost.
As it gets smaller, the hole in the braided tube gets larger,
The lead powder that is filled inside leaks easily to the outside,
It is not preferable because the life of the lead storage battery is shortened.

Further, in the present invention, as the warp yarn, count 1
It is preferable to use a single yarn having a number of twist of from 0.5 to 3.0 and a thickness of from 0.5 to 3.0. That is, if the count is smaller than 100, the strength of the braided tube is likely to decrease, and if it is larger than 180, it becomes difficult to manufacture a braided sleeve with a braiding machine, and it is necessary to increase the thickness of the glass single fiber or increase the number thereof. This is because the material cost increases.

Further, if the number of twists is less than 0.5, fluffing is likely to occur at the time of stringing, and if it is more than 3.0, the untwisting of the glass fiber becomes large and loops are generated in the braided sleeve.

The count of a single yarn is determined by the diameter of the single fiber and the number of bundles. An example is shown in Table 1.

[0023]

[Table 1]

In the present invention, the counts of the single yarns for the weft yarns are specified to be 50 to 90, but are not limited to the single yarns shown in Table 1.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The braided tube of the present invention will be described below in detail based on examples and comparative examples.

Example 1 First, a sizing agent having a solid content of about 1.2% by weight was applied to the surface of a single glass fiber having a diameter of 9 μm, and 400 of these were bundled and wound into a paper roll as a glass strand. , To make a cake. Next, the glass strands are released from the plurality of cakes, and a single yarn is obtained by twisting with a twist number of 1.0, then two of these single yarns are bundled and twisted with a twist number of 2.0 to obtain a weft yarn. I got

Further, a sizing agent having a solid content of about 1.2% by weight was applied to the surface of a single glass fiber having a diameter of 13 μm, and then 400 bunches were bundled and wound into a paper roll as a glass strand to prepare a cake. . Next, the glass strand was released from the cake and twisted at a twist number of 1.0 to obtain a single yarn, which was used as a warp yarn.

Using a braiding machine from the weft and warp yarns,
A braided sleeve was manufactured so that the number of weft yarns was 48, the number of warp yarns was 24, and the weaving density was 18 stitches / 25 mm at a stringing speed of 18 m per hour.

Next, after inserting a spreader made of a metal ball from one end opening of the braided sleeve, the braided sleeve is moved by passing through the braided sleeve in a state where the spreader is stopped, and further expanded into a cylindrical shape. While moving the braided sleeve in the longitudinal direction without bending, the phenol resin emulsion, which is a curing agent solution, is allowed to flow down from above to impregnate so as to have an adhesion rate of 5% by weight, and then dried, solidified, and cut. The inner diameter is 9m
A braided tube having a length of 270 mm was prepared.

When the number of fluffs in the braided tube thus obtained was examined, only 2 fluffs per 10 braided tubes were obtained.
It was a book. When the bending strength and the compressive strength of this braided tube were measured, they were 1.5 kgf and 12 kgf, respectively.

Example 2 First, a sizing agent having a solid content of about 1.2% by weight was applied to the surface of a glass single fiber having a diameter of 9 μm, and then 400 were bundled and wound into a paper roll as a glass strand. , To make a cake. Next, the glass strands are released from the plurality of cakes, and a single yarn is obtained by twisting with a twist number of 0.7. Then, two of these single yarns are bundled and twisted with a twist number of 3.8. We got a weft thread.

A sizing agent having a solid content of about 1.2% by weight was applied to the surface of a single glass fiber having a diameter of 13 μm, and 400 bunches were bundled and wound into a paper roll as a glass strand to prepare a cake. . Next, the glass strand was released from the cake and twisted with a twist number of 1.5 to obtain a single yarn, which was used as a warp yarn.

Using a braiding machine from the weft and warp yarns,
At a stringing speed of 15 m per hour, a braided sleeve was produced so that the number of weft yarns was 48, the number of warp yarns was 24, and the weaving density was 21 stitches / 25 mm, and then this braided sleeve was used. Under the same conditions as in Example 1, a braided tube having an inner diameter of 9 mm and a length of 270 mm was produced.

When the number of fluffs in this braided tube was examined, it was only 3 per 10 braided tubes.
When the bending strength and the compressive strength of the braided tube were measured, they were 1.8 kgf and 16 kgf, respectively.

(Comparative Example) First, a sizing agent having a solid content of about 1.2% was applied to the surface of a glass single fiber having a diameter of 9 μm, and then 200 were bundled, wound up as a glass strand and wound on a paper roll. Was prepared. Next, the glass strands are released from the plurality of cakes, and a single yarn is obtained by twisting with a twist number of 1.0, and then these four single yarns are bundled and twisted with a twist number of 4.0. Weft yarn is obtained by bundling, and two similar single yarns are bundled, and the number of twists is 4.0.
Warp yarns are obtained by ply twisting at a rate of 18 m per hour with a braiding machine using these yarns, and the number of weft yarns is 48, the number of warp yarns is 24 and the weaving density is 18 A braided sleeve was prepared so as to have an eye / 25 mm.

Thereafter, a braided tube having an inner diameter of 9 mm and a length of 270 mm was obtained from this braided sleeve under the same conditions as in Example 1.

When the number of fluffs in this braided tube was examined, there were 30 braids per 10 braided tubes. When the bending strength and the compressive strength of this braided tube were measured, they were 0.9 kgf and 8 kgf, respectively.

As the braiding machine, a large 48 carrier braider manufactured by Kokubu Tekko Co., Ltd. was used. The number of fluffs in each braided tube was determined by observing the braided tube with a microscope having a magnification of 5 times. Further, the bending strength was measured by a three-point load test using an autograph manufactured by Shimadzu Corporation at a loading speed of 240 mm / min and a span of 75 mm.
After cutting to a length of mm, the measurement was carried out with an autograph manufactured by Shimadzu Corporation at a loading speed of 240 mm / min.

[0039]

As described above, the braided tube of the present invention
Despite the low weaving density, it has high bending strength and compressive strength, and because the weaving density is small, without increasing the fluffing at the time of stringing, the braiding speed of the braiding machine is increased, It is possible to reduce the production cost.

Claims (2)

[Claims] 1. A braided tube made by impregnating a braided sleeve made of glass fiber with a hardener solution in a braided sleeve braided in a cylindrical shape, and then drying and solidifying the same. Bundling two 90 single yarns, using a plied yarn plied with a twist number of 1.5 to 4.5,
A braided tube having a woven density of 15 to 23 meshes / 25 mm. 2. The braided tube according to claim 1, wherein a single yarn having a count of 100 to 180 and a twist number of 0.5 to 3.0 is used as the warp yarn.