JP2021088790A - Linear body used for knotted net body, knotted net body having knotted part composed of the same, and method of manufacturing knotted net body having knotted part - Google Patents

Abstract

To provide a linear body having high resilience and mechanical strength characteristics suitable for knitting a net, and a knotted net body having knotted parts without slackness, and definite mechanical strength characteristics.SOLUTION: The linear body 1 suitable for knitting a net can be obtained by a linear body 1 having an outer layer 3 comprising a water-soluble fiber on the circumference of a rope body 2, and a knotted net body having knotted parts without slackness, and definite mechanical strength characteristics can be provided by knitting a net using the linear body 1. Further, in view of flameproof of a facility, a nonflammable knotted net body, and a method of manufacturing the same can be provided.SELECTED DRAWING: Figure 1

Description

The present invention comprises a striatum used for a nodule net body for protection used in a facility from small wild animals or flying objects, a nodule net body having a nodule formed by knitting using the striatum, and a nodule net body. , The present invention relates to a method for producing a nodular net having a nodule.

Conventionally, the protective net body uses a rigid metal wire or a striatum provided with a thermoplastic resin on the outer circumference of the metal wire in order to prevent invasion from wild small animals such as wild rabbits and wild birds. It is stretched between the columns.

In such a case, it is necessary to have strength to prevent invasion from small wild animals and the like, and flexibility to be stretched according to the undulations of the terrain. In addition, strength from flying objects and the like and flexibility that can be stretched according to the shape of the facility and the like are required. Furthermore, in order to ensure safety from the viewpoint of flameproofing of facilities, non-combustible nets have come to be required.

Patent Document 1 describes a nodule network in which the outer periphery of a metal wire is coated with a thermoplastic resin containing a polyamide elastomer as a main component.

Patent Document 2 describes a metal net or the like using a coil-shaped connecting member at an intersection of stainless steel wires.

Japanese Patent No. 5688376 Utility Model Registration No. 3212425

Since the knotted net body described in Patent Document 1 uses a thermoplastic resin whose main component is a polyamide elastomer as a coating body, the streak body and the knotted net body mechanically change due to a temperature change in the environment. Strength characteristics change significantly. For this reason, mechanical adjustment is required each time the net is knitted, which is a complicated work, and it is difficult to obtain a knotted net body having stable quality.
Further, a knotted net made of a flammable resin coating cannot meet the demands of a non-combustible knotted net.

Since the metal net or the like described in Patent Document 2 uses a coil-shaped connecting member at the intersection of the stainless wires, the mesh position shifts as shown in FIG. 1 of Patent Document 2. , The shape of each mesh is deformed. Further, when used outdoors, the coil-shaped connecting member is likely to easily fall off due to wind and rain or the like. Furthermore, since there are many intersections, a large number of assembly man-hours are required.

Although Patent Document 1 has a technical description of analyzing the mechanical strength characteristics of the striatum, it is insufficient as the mechanical strength characteristics including the temperature change of the environment, and also includes the mechanical strength characteristics. There is no technical description that focuses on the friction of the striatum.
Further, although Patent Document 2 describes a technique for connecting the intersections of metal wires, the connection strength of the intersections is unstable, and the metal wires include the mechanical strength characteristics of each member constituting the net. There is no technical description that focuses on the friction of.
Further, in Patent Documents 1 and 2, a striatum formed by combining a metal wire and a fiber, a nodule network having a nodule formed by using the striatum, and a nodule network having a nodule are manufactured. There is no technical description about the method.

The present invention has been made in view of the above problems, and is a striatum having mechanical strength characteristics and slipperiness suitable for a knitted net, and a nodule portion in which the mesh is not easily deformed and loosened due to changes in the environment. It is an object of the present invention to provide a nodular network with high flexibility.
Furthermore, in order to ensure safety from the viewpoint of flameproofing of facilities, the purpose is to provide a non-combustible nodule network and a method for manufacturing the same.

In order to achieve the above object, the striatum includes a rope body and an outer layer body on the outer periphery of the rope body.
The rope body is made by twisting a plurality of soft austenitic stainless steel metal strands. When the tensile elongation at break exceeds 8%, the increase in the tensile breaking force gradually decreases, and the rope body exhibits a non-linear characteristic having a plateau until the tensile breaking.

The outer layer is formed by spirally winding or braiding a plurality of twisted yarns, and the twisted yarn is a twisted yarn obtained by twisting a plurality of raw yarns at a frequency of 50 times / m or more and 2500 times / m or less. The fineness is 31 dtex or more and 660 dtex or less. The raw yarn is a polyvinyl alcohol having an average degree of polymerization of 500 or more and 2500 or less, a saponification degree of 86 mol% or more and 99 mol% or less, and a tensile breaking strength of 3.3 CN / dtex or more and 5.5 CN / dtex or less. It is a water-soluble fiber as a main component.
The outer layer body has a smaller tensile breaking elongation than the rope body and a larger tensile breaking force than the rope body.

The striatum is characterized in that it exhibits linear characteristics up to tensile fracture even if the tensile elongation at break exceeds 8%.

The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body includes a first layer of spirally wound twisted yarn on the outer periphery of the rope body, and a second layer of spirally wound twisted yarn on the outer periphery of the first layer in the direction opposite to the first layer. It is a thing. The twisted yarns of the first layer and the second layer are both twisted yarns of 12 or more and 200 or less at a twisting rate of 200 times / m or more and 2000 times / m or less, and have a fineness of 110 dtex or more and 660 dtex or less. It is as follows.
The striatum is characterized in that the tensile breaking elongation is 22.5% or less and the tensile breaking force is 60 N or more.

The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body is made by braiding two or more and 16 or less twisted yarns on the outer circumference of the rope body. The twisted yarn is obtained by twisting 12 or more and 200 or less raw yarns at a twisting frequency of 50 times / m or more and 2000 times / m or less, and has a fineness of 110 dtex or more and 660 dtex or less.
The striatum is characterized in that the tensile breaking elongation is 20% or less and the tensile breaking force is 70 N or more.

In a striatum, the coefficient of friction of the striatum is μa, the load applied to one side of the striatum is W, and the tensile operating force that pulls the load W from the other side is F, and one of them. When the angle at which the direction of the linear body changes from the load-bearing side to the other tension operation side is θ (radian) and the base of the natural logarithm is е, the load W and the load W of the linear body The operating force ratio (F / W) with the tensile operating force F is expressed by a constant relational expression.

The metal wire of the rope body, which is a striatum, has a mirror-like appearance, and the outer layer body has a melting treatment temperature of the twisted yarn of 55 ° C. or higher and a saponification degree of the raw yarn of 86 mol% or more 92. It is characterized in that it is a water-soluble fiber containing polyvinyl alcohol as a main component and having a molar% or less.

It is a striatum, and the raw yarn of the outer layer is a water-soluble fiber containing polyvinyl alcohol as a main component and a carboxylate.

It is a nodule net body having a nodule portion characterized by being knitted using a striatum.

A nodule network having a nodule, the outer layer of the striatum is melted and removed in hot water having a melting treatment temperature of 55 ° C. or higher, and tension is applied to tighten the nodule. It is a nodule network having a nodule, which is characterized by being composed of.

The process of knitting a nodule net having a nodule using a striatum,
A step of filling the melting tank with water having a weight 30 times or more the weight of the outer layer and raising the melting treatment temperature to 55 ° C. or higher.
The process of immersing the nodule network in the melting tank above the melting treatment temperature, and
A step of immersing in a dissolution tank for 10 minutes or more and 2 hours or less to dissolve and remove the outer layer body, and
A method for producing a nodule net having a nodule, which comprises a step of taking out a nodule net formed by melting and removing the outer layer from the melting tank, applying tension, and tightening the nodule.

The striatum includes a rope body and an outer layer body on the outer periphery of the rope body.
The rope body is made by twisting a plurality of soft austenitic stainless steel metal strands. When the tensile elongation at break exceeds 8%, the increase in the tensile breaking force gradually decreases, and the rope body exhibits a non-linear characteristic having a plateau until the tensile breaking.
The outer layer is formed by spirally winding or braiding a plurality of twisted yarns, and the twisted yarn is a twisted yarn obtained by twisting a plurality of raw yarns at a frequency of 50 times / m or more and 2500 times / m or less. The fineness is 31 dtex or more and 660 dtex or less. The raw yarn is a polyvinyl alcohol having an average degree of polymerization of 500 or more and 2500 or less, a saponification degree of 86 mol% or more and 99 mol% or less, and a tensile breaking strength of 3.3 CN / dtex or more and 5.5 CN / dtex or less. It is a water-soluble fiber as a main component.
The outer layer body has a smaller tensile breaking elongation than the rope body and a larger tensile breaking force than the rope body.
The striatum is characterized in that it exhibits linear characteristics up to tensile fracture even if the tensile elongation at break exceeds 8%.
The reason for this is that by providing an outer layer body having characteristics different from that of the rope body on the outer periphery of a soft rope body exhibiting non-linear characteristics having a plateau, a striatum exhibiting linear characteristics in mechanical strength characteristics can be obtained. Is.
As a result, it is possible to obtain a striatum suitable for the knitting net of the nodule net body having the mechanical strength characteristics and flexibility required for forming the nodule portion.

The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body includes a first layer of spirally wound twisted yarn on the outer periphery of the rope body, and a second layer of spirally wound twisted yarn on the outer periphery of the first layer in the direction opposite to the first layer. It is a thing. The twisted yarns of the first layer and the second layer are both twisted yarns of 12 or more and 200 or less at a twisting rate of 200 times / m or more and 2000 times / m or less, and have a fineness of 110 dtex or more and 660 dtex or less. It is as follows.
The striatum is characterized in that the tensile breaking elongation is 22.5% or less and the tensile breaking force is 60 N or more.
As a result, it is possible to obtain a striatum that can reduce tensile fracture elongation, improve tensile fracture force, and exhibit linear characteristics while having high flexibility. In addition, the spiral groove structure in the longitudinal direction formed by the spirally wound twisted yarn increases the surface pressure applied to the twisted yarn and improves the slipperiness between the striatum and the upper hook during knitting. Can be done.

The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body is made by braiding two or more and 16 or less twisted yarns on the outer circumference of the rope body. The twisted yarn is obtained by twisting 12 or more and 200 or less raw yarns at a twisting frequency of 50 times / m or more and 2000 times / m or less, and has a fineness of 110 dtex or more and 660 dtex or less.
The striatum is characterized in that the tensile breaking elongation is 20% or less and the tensile breaking force is 70 N or more.
As a result, it is possible to obtain a striatum that reduces tensile fracture elongation, improves tensile fracture force, and exhibits linear characteristics while having high flexibility. Further, due to the mesh-like uneven structure in the longitudinal direction in which the twisted yarns are twisted, the surface pressure applied to the twisted yarns can be increased to improve the slipperiness between the striatum and the upper hook or the like at the time of knitting.

In a striatum, the coefficient of friction of the striatum is μa, the load applied to one side of the striatum is W, and the tensile operating force that pulls the load W from the other side is F, and one of them. When the angle at which the direction of the linear body changes from the load-bearing side to the other tension operation side is θ (radian) and the base of the natural logarithm is е, the load W and the load W of the linear body The operating force ratio (F / W) with the tensile operating force F is expressed by a constant relational expression.
This makes it possible to improve the slipperiness of the striatum, especially when forming a nodule, and as a result, it is possible to tighten the nodule.

The metal wire of the rope body, which is a striatum, has a mirror-like appearance, and the outer layer body has a melting treatment temperature of twisted yarn of 55 ° C. or higher and a saponification degree of raw yarn of 86 mol% or more 92. It is characterized in that it is a water-soluble fiber containing polyvinyl alcohol as a main component and having a molar% or less.
This makes it possible to obtain a striatum with enhanced solubility of the outer layer in hot water.

It is a striatum, and the raw yarn of the outer layer is a water-soluble fiber containing polyvinyl alcohol as a main component and a carboxylate.
This makes it possible to obtain a striatum with higher solubility of the outer layer in hot water.

It is a nodule net body having a nodule portion characterized by being knitted using a striatum.
As a result, it is possible to obtain a nodule network body having a nodule portion whose mesh is not easily deformed and loosened due to changes in the environment and having a nodule portion having high flexibility.

A nodule network having a nodule, the outer layer of the striatum is melted and removed in hot water having a melting treatment temperature of 55 ° C. or higher, and tension is applied to tighten the nodule. It is a nodule network having a nodule, which is characterized by being composed of.
The reason for this is to obtain a non-combustible, nodular network with nodules made of soft metal wire.
As a result, the mesh has a nodule that is hard to be deformed and loosened due to changes in the environment, and has high flexibility. In particular, a non-combustible nodule to ensure safety from the viewpoint of flameproofing of facilities, etc. A nodular network having the above can be provided.

The process of knitting a nodule net having a nodule using a striatum,
A step of filling the melting tank with water having a weight 30 times or more the weight of the outer layer and raising the melting treatment temperature to 55 ° C. or higher.
The process of immersing the nodule network in the melting tank above the melting treatment temperature, and
A step of immersing in a dissolution tank for 10 minutes or more and 2 hours or less to dissolve and remove the outer layer body, and
A method for producing a nodule net having a nodule, which comprises a step of taking out a nodule net formed by melting and removing the outer layer from the melting tank, applying tension, and tightening the nodule.
This makes it possible to manufacture a nodule network having a non-combustible nodule made of a soft metal wire.

The perspective view which cut out a part of the striatum of the 1st Embodiment of this invention is shown. The mechanical strength characteristics of the striatum of the first embodiment and the second embodiment of the present invention and the striatum having the same specifications as those of Patent Document 1 are shown. The perspective view which cut out a part of the striatum of the 2nd Embodiment of this invention is shown. An explanatory diagram for measuring the slipperiness of the striatum of the present invention is shown. It is explanatory drawing of the slipperiness measurement result of the striatum of this invention. Example 1 of the nodule net body using the striatum of the present invention is shown. Example 2 of the nodule net body using the striatum of the present invention is shown. The temperature-dependent mechanical strength characteristics of the striatum of Patent Document 1 are shown.

Hereinafter, a striatum used for the nodule net body of the present invention, a nodule net body having a nodule portion formed by using the striatum, and a method for manufacturing a nodule net body having a nodule portion will be described.

FIG. 1 shows the striatum 1 of the first embodiment of the present invention.
The striatum 1 includes a rope body 2 and an outer layer body 3 on the outer periphery of the rope body 2, and has an outer diameter D1 of 0.55 mm.
The rope body 2 is twisted by using a metal wire 2A of a core material having a wire diameter of 0.13 mm and six metal wire 2B of a side material having a wire diameter of 0.11 mm on the outside of the metal wire 2A. Consists of. This is a 1 × 7 spiral rope having an outer diameter Do of 0.35 mm, a twist length of 3.3 mm (the length of the metal wire 2B rotating once around the core material), and a twist structure described later.

As the metal strands 2A and 2B used for the rope body 2, austenitic stainless steel wires such as SUS304 or SUS316 of soft No. 1, W1 or W2 (JISG4309) having a tensile breaking strength of 650 MPa or more and 1130 MPa or less are used.
The metal strands 2A and 2B are subjected to solution heat treatment at 900 ° C. or higher and 1150 ° C. or lower for 30 seconds to 2 hours. Further, after the solution heat treatment, light wire drawing may be performed for dimensional adjustment, surface surface adjustment, etc., and the processing-induced martensitic transformation phase is 2% or less. When the wire drawing process for the adjustment is not performed, the process-induced martensitic transformation phase is 0%.
The mechanical strength characteristics of the rope body 2 are a tensile breaking elongation of 38% and a tensile breaking force of 52N.

The outer layer 3 is a first layer 3A of twisted yarn spirally wound around the outer circumference of the rope body 2, and a twisted yarn spirally wound around the outer circumference of the first layer 3A in the direction opposite to that of the first layer 3A. The second layer 3B of the above is provided.
The twisted yarns used for the first layer 3A and the second layer 3B are each obtained by twisting 200 raw yarns at a number of twists of 200 times / m or more and 1500 times / m or less, and have a fineness of 660 dtex.
The yarn has a tensile elongation at break (temperature 20 ° C., humidity 65% RH) of 11% or more and 24% or less, and a tensile strength at break (temperature 20 ° C., humidity 65% RH) of 3.3 CN / dtex or more and 5.5 CN. It is less than / dtex.

Here, the temperature-dependent mechanical strength characteristics of the striatum used in Patent Document 1 will be described with reference to FIG.
FIG. 8 shows the mechanical strength characteristics of tensile breaking force and tensile breaking elongation, reference numeral A1 is a striatum of Patent Document 1, and reference numeral B is a rope body used for the striatum of Patent Document 1. Is shown. Reference numeral A2 has the same specifications as the striatum of Patent Document 1, and indicates the mechanical strength characteristics in an atmosphere at a temperature of 30 ° C. higher than that at the time of measuring the mechanical strength characteristics of Patent Document 1.
According to FIG. 8, the striatum of Patent Document 1 has a temperature difference of 30 ° C. (in other words, an environmental temperature difference between winter and summer) from reference numeral A1 to reference numeral A2 (in an atmosphere 30 ° C. higher than that of reference numeral A1). The mechanical strength characteristics change significantly.
As a result, the mechanical strength characteristic of reference numeral A2 (in an atmosphere at a high temperature of 30 ° C.) is a non-linear characteristic similar to the mechanical strength characteristic of the rope body of reference numeral B.
That is, in the striatum of Patent Document 1, the mechanical strength characteristics in an atmosphere at a high temperature of 30 ° C. greatly increase the tensile elongation at break from 24% to 40% (about 1.7 times), and the tensile breaking force is high. It has a non-linear characteristic that decreases from 59N to 56.6N (2.4N).
It is considered that the reason for this is that the coating used for the striatum of Patent Document 1 is due to the thermal softening property of the thermoplastic resin (polyamide elastomer) by hot melting (extrusion molding).

Next, using FIG. 2, the mechanical strength is compared between the striatum 1 (reference numeral R) of the first embodiment of the present invention and the striatum (reference numeral A2) having the same specifications as those of Patent Document 1. The characteristics will be described.
FIG. 2 shows the mechanical strength characteristics under the same temperature conditions as those at the time of measuring the mechanical strength characteristics of reference numeral A2 shown in FIG. Reference numeral S indicates the mechanical strength characteristics of the striatum 11 of the second embodiment, which will be described later.
According to FIG. 2, the mechanical strength characteristics of the striatum 1 (reference numeral R) of the present invention are a tensile breaking elongation of 19.5%, a tensile breaking force of 67.4N, and a tensile breaking elongation of 8%. Even if it exceeds, it shows linear characteristics up to tensile fracture.
Therefore, the non-linear characteristic "when the tensile elongation at break exceeds 15%, the tensile breaking force gradually changes slowly" exhibited by the linear body (reference numeral A1) of Patent Document 1 and the linear body (reference numeral A2) having the same specifications as those of Patent Document 1. What is the non-linear characteristic having a plateau (Patent Document 1, claim 1) that increases and becomes a plateau-like flat state and then breaks, and the linear characteristic indicated by the strip 1 (reference numeral R) of the present invention? ,to differ greatly.
The reason for this is that in the striatum 1 of the present invention, twisted yarn having a fineness of 660 dtex is used for the first layer 3A and the second layer 3B, and the first layer 3A and the second layer 3B are spirally wound in opposite directions. This is because the outer layer body 3 having the two-layer structure of the above is provided on the outer periphery of the rope body 2 to form a striatum 1 exhibiting linear characteristics with low tensile elongation at break and high tensile breaking force.
Supplementally, the estimated value (calculated value) of the tensile breaking force of the outer layer body 3 is 58.08N {660 (dtex) × 2 × 4.4 (CN / dtex) / 100}, and the actual tensile breaking force. The difference from 67.4N (9.32N) is considered to be due to the two-layer structure of twisted twisted yarn and spiral reverse winding. The same applies to tensile elongation at break.
And while the covering body of Patent Document 1 uses a thermoplastic resin having a constant wall thickness, the outer layer body 3 of the present invention uses fibers, so that it is more than the striatum of Patent Document 1. , High flexibility can be exhibited in the radial direction of the striatum 1.
Further, the slipperiness of the striatum 1 can be improved by the spiral groove structure in the longitudinal direction of the spirally wound twisted yarn of the outer layer body 3. The slipperiness of the striatum 1 will be described later.

The rope body 2 of the first embodiment has an outer diameter Do of 0.35 mm, but the outer diameter Do may be 0.20 mm or more and 2.00 mm or less. Further, although the twisted structure of the rope body 2 of the first embodiment uses a 1 × 7 spiral rope, any of the strand ropes may be used. In addition to 1 × 7, the spiral rope may have a twisted structure of 1 × 12, 1 × 19, etc., and may be twisted using 7 to 133 ropes. Further, the twisted structure of the strand rope is 7 × 7, 7 × 19, etc., in addition to 3 × 3, and any of 9 to 133 twisted ropes may be used.

The twisted yarns used for the first layer 3A and the second layer 3B of the outer layer 3 are 12 or more and 200 or less original yarns twisted 50 times or more and 2500 times / m or less, respectively. Fineness of 31 dtex or more and 990 dtex or less may be used.
Preferably, 12 or more and 200 or less raw yarns are twisted 200 times / m or more and 2000 times / m or less, and the fineness is 110 dtex or more and 660 dtex or less.
The outer layer 3 of the first embodiment has a two-layer structure in which the first layer 3A and the second layer 3B are spirally wound in the opposite direction, but at least the first layer 3A is provided, and three or more layers are provided. It may have a multi-layer structure.
More preferably, in order to suppress the unbalanced rotation of the striatum 1 in the radial direction, twisted yarns obtained by twisting the same number of raw yarns are used for each layer to form a multi-layer structure composed of even-numbered layers. ..
More preferably, the twisting direction of the rope body 2 (S twist in this embodiment) and the winding direction of the first layer 3A of the outer layer body 3 (Z winding in this embodiment) are opposite to each other, and further, the first layer. The winding direction of 3A and the winding direction of the second layer 3B (S winding in this embodiment) are to be wound in opposite directions.

The raw yarn used for the plying of the outer layer 3 is a water-soluble fiber containing polyvinyl alcohol as a main component, having an average degree of polymerization of 500 or more and 2500 or less and a saponification degree of 86 mol% or more and 99 mol% or less. The reason for this is that if the average degree of polymerization and the degree of saponification are below the above ranges, the water solubility is improved, but it is difficult to develop a sufficient tensile breaking force, and if it exceeds the above ranges, the tensile breaking force is improved. However, this is because the viscosity of the undiluted solution becomes high and it becomes difficult to produce the undiluted yarn by dry spinning.
In order to improve the water solubility within the range of the tensile breaking strength of the raw yarn, the average degree of polymerization is preferably 1000 or more and 2000 or less, and the saponification degree is 86 mol% or more and 92 mol% or less. More preferably, the average degree of polymerization is 1200 or more and 2000 or less, and the saponification degree is 86 mol% or more and 90 mol% or less.

FIG. 3 shows the striatum 11 of the second embodiment of the present invention.
The striatum 11 includes a rope body 2 and an outer layer body 31 on the outer periphery of the rope body 2, and has an outer diameter D2 of 0.60 mm. The outer layer 31 is different between the striatum 1 of the first embodiment and the striatum 11 of the second embodiment. Therefore, the rope body 2 is the same as the rope body 2 of the first embodiment, and the same applies to the other modes such as the twisted structure of the rope body 2.

The outer layer 31 is a braid in which 50 raw yarns are twisted at a twisting rate of 1200 times / m or more and 2000 times / m, and eight bundles of twisted yarns having a fineness of 220 dtex are used and twisted for each bundle (a braid). It is also called 8 strokes).
The yarn has a tensile elongation at break (temperature 20 ° C., humidity 65% RH) of 11% or more and 24% or less, and a tensile strength at break (temperature 20 ° C., humidity 65% RH) of 3.3 CN / dtex or more and 5.5 CN. It is less than / dtex.

Next, using FIG. 2, the striatum 11 (reference numeral S) of the second embodiment of the present invention is compared with the striatum (reference numeral A2) having the same specifications as those of Patent Document 1, and the mechanical strength is increased. The characteristics will be described.
FIG. 2 shows the mechanical strength characteristics under the same temperature conditions as those at the time of measuring the mechanical strength characteristics of reference numeral A2 shown in FIG.
According to FIG. 2, the mechanical strength characteristics of the striatum 11 (reference numeral S) of the present invention are a tensile breaking elongation of 18.8%, a tensile breaking force of 80.2N, and a tensile breaking elongation of 8%. It shows linear characteristics up to tensile fracture beyond.
Therefore, similarly to the striatum 1 of the first embodiment, the striatum of Patent Document 1 (reference numeral A1) and the striatum of the same specifications as Patent Document 1 (reference numeral A2) have a non-linear characteristic having a plateau. On the other hand, the striatum 11 (reference numeral S) of the present invention exhibits linear characteristics, and the mechanical strength characteristics are significantly different from those of the striatum 11 of the present invention.
The reason for this is that the striatum 11 of the present invention is tensioned by using eight bundles of twisted yarn having a fineness of 220 dtex and providing an outer layer body 31 composed of a braid that is twisted for each bundle on the outer periphery of the rope body 2. This is because the striatum 11 has low breaking elongation, high tensile breaking force, and exhibits linear characteristics.
Supplementally, the estimated value (calculated value) of the tensile breaking force of the outer layer 31 is 77.44N {220dtex) × 4.4 (CN / dtex) × 8/100}, and the actual tensile breaking force (80). The difference (2.76N) from .2N) is considered to be due to the structure of the twisted twisted yarn and the braided twisted yarn. The same applies to tensile elongation at break.
Then, similarly to the striatum 1 of the first embodiment, it is possible to exhibit higher flexibility in the radial direction of the striatum 11 than the striatum of Patent Document 1.
Further, the slipperiness of the striatum 11 can be improved by the mesh-like uneven structure of the twisted yarns of the outer layer 31 that are twisted in a mesh shape in the longitudinal direction. The slipperiness of the striatum 11 will be described later.

The twisted yarn used for the outer layer 31 is a twisted yarn of 12 or more and 200 or less twisted 50 times / m or more and 2500 times / m or less, and a fineness of 31 dtex or more and 990 dtex or less may be used.
Preferably, 12 or more and 200 or less raw yarns are twisted 200 times / m or more and 2000 times / m or less, and the fineness is 110 dtex or more and 660 dtex or less.
The outer layer 31 of the second embodiment has a braided structure (8 strokes) in which eight bundles of twisted yarn are used and twisted for each bundle, but the twist is not for each bundle but for every two bundles. It may be a braided structure in which two or more and 16 or less twisted yarns are used and twisted.
More preferably, in order to suppress the unbalanced rotation of the striatum 11 in the radial direction, twisted yarns obtained by twisting the same number of raw yarns are used for each bundle, and the same number of twisted yarn bundles are alternately twisted. It is to make it a structure.

The raw yarn used for the plying of the outer layer 31 has an average degree of polymerization of 500 or more and 2500 or less and a saponification degree of 86 mol% or more and 99 mol% or less, similarly to the raw yarn used for the outer layer 3 of the first embodiment. It is a water-soluble fiber containing polyvinyl alcohol as a main component.
The reason for this and the preferred embodiment for improving the water solubility of the raw yarn within the range of the tensile breaking strength are the same as those of the raw yarn used for the outer layer 3 of the first embodiment.

Next, the slipperiness of the striatum 1 and 11 of the present invention will be described in comparison with the striatum having the same specifications as Patent Document 1.
FIG. 4 is an explanatory diagram for explaining a test device 60 for measuring the slipperiness of a striatum and a test method. A test product (striatum) 61 is wound around the outer circumference of the fixed metal round bar 62, the load load W63 is connected to one side of the test product 61, and the measuring tool 64 is connected to the other side.
Then, in the state shown in FIG. 4, the load load W63 is pulled (downward in the state of FIG. 4), and the tensile operating force F at the time of pulling is measured by the measuring tool 64.
Here, θ refers to an angle at which the direction in which the test product 61 is pulled from one load-bearing side to the other tension operation side changes, and is hereinafter simply referred to as a bending angle.
Further, the metal round bar 62 was fixed with stainless steel having an outer diameter of 4 mm, the load load W was 0.40 kgw, and the measuring instrument 64 used a dedicated phos gauge. The bending angle θ is 180 ° (wound 0.5 times around the outer circumference of the metal round bar 62, the tensile direction is downward shown in FIG. 4), and 360 ° (wound once around the outer circumference of the metal round bar 62). The tensile operating force F was measured at three levels: the tensile direction was upward with respect to FIG. 4) and 540 ° (wrapped around the outer circumference of the metal round bar 62 1.5 times, and the tensile direction was downward shown in FIG. 4). .. As the test product 61, the striatum 1 and 11 and the striatum having the same specifications as those of Patent Document 1 were used.

FIG. 5 shows the test results of the slipperiness of the test product 61. The vertical axis shows the operating force ratio (F / W) to the tensile operating force F with respect to the load load W, and the horizontal axis shows the bending angle θ (radian).
According to FIG. 5, the striatum (reference numeral A2) having the same specifications as Patent Document 1 has the highest operating force ratio (F / W) value. This indicates that a large tensile operating force F is required when pulling the load load W. Further, the operating force ratio (F / W) is a striatum (reference numeral A2) having the same specifications as those of Patent Document 1, a striatum 1 (reference numeral R) of the first embodiment of the present invention, and a second embodiment of the present invention. The slope of the line decreases in the order of the striatum 11 (reference numeral S) of the form.
This indicates that the lower the slope of the line, the higher (better) the slipperiness of the striatum and the lower the coefficient of friction.

Next, the operating force ratio (F / W) will be described.
Generally, when the coefficient of friction of the test product 61 is μ, the bending angle is θ (radian), and the base of the natural logarithm is е, the load W and the tensile operating force with respect to the load W are obtained from the relational expression of force transmission. The relationship of the operating force ratio (F / W) with F is
F / W = еμ ^{× θ}・ ・ ・ (1)
It can be expressed by the relational expression (1).
Then, the friction coefficient of the striatum 1 of the first embodiment of the present invention is μ1, the friction coefficient of the striatum 11 of the second embodiment of the present invention is μ2, and the friction of the striatum having the same specifications as Patent Document 1. Assuming that the coefficient is μo, the coefficient of friction is as follows.
According to FIG. 5, the operating force ratio (F / W) of the striatum having the same specifications as Patent Document 1 is 5.55 (2.22 / 0.4) when, for example, 360 ° bending (2π radian) is performed. ), The friction coefficient μo is about 0.273 (ln5.55 / 2π).
Similarly, the friction coefficient μ1 of the striatum 1 of the first embodiment is about 0.208 (ln3.70 / 2π), and the friction coefficient μ2 of the striatum 11 of the second embodiment is about 0.171 (ln3.70 / 2π). It becomes ln2.93 / 2π).
This means that the friction coefficient μ1 of the striatum 1 of the present invention is about 76.2% {(0. It is 208 / 0.273) × 100}, indicating that the coefficient of friction μ2 of the striatum 11 of the present invention is about 62.6% {(0.171 / 0.273) × 100}. ..
Therefore, the friction coefficients μ1 and μ2 of the striatums 1 and 11 of the present invention are about 24% to about 37% lower than the friction coefficient μo of the striatum having the same specifications as Patent Document 1, and slip. It shows that the sex is high.
The reason for this is that the coating material of the linear body having the same specifications as Patent Document 1 is a polyamide elastomer of a crystalline thermoplastic resin, and the coating material is rubbed and moved while being in contact with the metal round bar 62. This is because a stick-slip phenomenon (a phenomenon in which fluctuations in the tensile operating force F occur continuously in a short period of time) occurs. In particular, in a nodule net body, when a nodule portion having a small radius of curvature is formed, this phenomenon remarkably appears due to rubbing between the striatum. The slipperiness of rubbing the nodules will be described later.
On the other hand, the striatum 1 of the present invention has a spiral groove structure in the longitudinal direction formed by the spirally wound twisted yarn of the outer layer body 3, and the striatum 11 of the present invention has an outer layer. This is because the surface pressure applied to the twisted yarns can be increased and the slipperiness can be improved by the mesh-like uneven structure in the longitudinal direction in which the twisted yarns of the body 31 are twisted.

Then, assuming that the friction coefficient of the striatum 1 and 11 of the present invention is μa (general term for μ1 and μ2), the operating force ratio (F / W = ^{еμa × θ} ) of the striatum 1 and 11 of the present invention is , The striatum 1, 11 of the present invention is smaller than ^{the operating force ratio (е0.273 × θ} ) of the striatum having the same specifications as Patent Document 1 and larger than 1 (F / W = 1). The relationship between the operating force ratio (F / W) and the striatum having the same specifications as in Patent Document 1 is as follows.
1 <е ^{μa × θ} <е ^{0.273 × θ} ... (2)
It can be expressed by the relational expression (2).
Preferably,
^{1 <еμa × θ <е 0.246} × θ ··· (3)
It can be expressed by the relational expression (3).
More preferably
1 <е ^{μa × θ} <е ^{0.232 × θ}・ ・ ・ (4)
It can be expressed by the relational expression (4). Therefore, in the relational expression (3), the friction of the linear bodies 1 and 11 of the present invention is more than the friction coefficient μo of the linear body having the same specifications as in Patent Document 1. The coefficient μa is about 10% smaller, and in the relational expression (4), the friction coefficient μa of the strips 1 and 11 of the present invention is about 15% smaller.

Next, Example 1 of the nodule network body 70 having the nodule portion 73 of the present invention will be described.
FIG. 6A shows a knotted net body 70 having a mesh shape having a side length of 20 mm to 200 mm and forming a knot portion 73 with the striatum 71 and the striatum 72.
As the striatum 71 and the striatum used for the striatum 72, the striatum 1 or the striatum 11 of the present invention is used. Alternatively, the striatum 1 and the striatum 11 may be used in combination.
FIG. 6 (b) is an enlarged view in which the method of knotting the nodule portion 73 using the striatum 71 and the striatum 72 shows a frog or knot and is not tightened.
The method of knotting the nodule portion 73 is not limited to the frog or knot, and a double frog or knot, a main knot, or the like may be used. A frog or knot is preferable in order to prevent a decrease in the tensile breaking force of the nodule 73 and to prevent the mesh from shifting. The mesh shape may be either square or rhombic.

A method of knitting a knotted net body 70 having a nodule portion 73 is as seen in, for example, Japanese Patent Application Laid-Open No. 2006-57201, in which a warp (striatum 71 in FIG. 6) is hooked on a kamimagari. To form a loop, the Shimomagari passes through the loop and retracts while hooking the warp to form another loop, and the coin wrapped with the weft (striatum 72 in FIG. 6) is wound. On the lower side of the stored shuttle, the knotted portion 73 of the frog or knot is formed by pulling it to the lower hook and releasing the warp, and the knotted net body 70 is knitted.

In such a case, the main characteristics required for the striatum 1 and 11 of the present invention (in FIG. 6, the striatum 71 and 72, hereinafter referred to as the striatum 1 and 11) are due to the temperature change of the environment. Mechanical strength characteristics that are not greatly affected, flexibility for forming loops, and slipperiness with the upper or lower hooks for obtaining a nodule that is hard to loosen are required.
As shown by the striatum of Patent Document 1 and the striatum having the same specifications as those of Patent Document 1 (hereinafter referred to as striatum A1 and A2 of Patent Document 1), the striatum is greatly affected by changes in the temperature of the environment. Insufficient slipperiness with the upper or lower hook to obtain a nodule that is difficult to loosen.
Since the striatum A1 and A2 of Patent Document 1 use a polyamide elastomer for the coating material, the stick-slip phenomenon of the polyamide resin occurs, and the striatum rubs against each other, especially at the nodule portion to be tightly tightened. As a result, scratching noise is generated intermittently. This phenomenon indicates that the tightening force at the nodule is not uniform throughout the nodule network.
The reason why the stick-slip phenomenon occurs as a scraping sound at the nodule is that the striatums A1 and A2 of Patent Document 1 rub against each other when forming a loop having a small radius of curvature at the nodule. At the same time, the elastic bodies on the smooth surface are rubbed against each other by extrusion molding.
In such a case, it is considered that both the adhesion action due to the rubbing of the same materials and the physical adsorption action (Van der Waals force) due to the rubbing between smooth surfaces act to generate a scraping sound. ..
As a result, it is considered that the nodule portions having a non-uniform tightening force are unevenly distributed in the nodule net body.
On the other hand, the striatum 1 and 11 of the present invention do not cause the stick-slip phenomenon, have a low coefficient of friction and high slipperiness, and therefore are tightened as shown by the striatum A1 and A2 of Patent Document 1. Nodules with uneven force are not unevenly distributed in the striatum. The striatum 1 and 11 of the present invention have a friction coefficient lower than that of the striatums A1 and A2 of Patent Document 1 by about 24% to about 37%, indicating that the slipperiness is good.
As described above, the striatum 1 and 11 of the present invention are not significantly affected by the mechanical strength characteristics due to the temperature change of the environment as shown by the striatum A1 and A2 of Patent Document 1.
Further, since the striatum 1 and 11 of the present invention use the outer layer bodies 3 and 31 made of fibers, the striatum A1 of Patent Document 1 provided with a coating body made of a thermoplastic resin having a constant wall thickness. Unlike A2, the flexibility in the radial direction of the striatum is extremely high.
Further, since the striatum 1 and 11 of the present invention can have an outer diameter smaller than that of the striatum A1 and A2 of Patent Document 1 by about 20% to about 27%, the loop at the nodule portion 73 can be formed. The bending stress applied to the striatum 1 and 11 at the time of forming can be reduced.
As a result, it is possible to obtain a knotted net body 70 having a nodule portion 73 which is highly flexible and is hard to loosen while having a low tensile breaking elongation and a high tensile breaking force.

Next, the solubility of the outer layers 3 and 31 of the striatum 1 and 11 of the present invention in hot water will be described before the second embodiment of the nodule network 80 having the nodule portion of the present invention is described.
In order to further enhance the solubility in hot water, the rope body 2 used for the striatums 1 and 11 is preferably a metal wire having a "mirror surface" appearance. The term "mirror surface" as used herein means a degree to which unevenness cannot be detected by visual inspection and tactile sensation, or a degree to which light can be reflected, and does not necessarily mean a state in which an object is clearly reflected like a mirror. Absent.
The reason why the metal wires 2A and 2B of the rope body 2 are "mirror-shaped" is that the contact angle with water is increased and the hydrophobicity of the metal wire and the hydrophilicity of the water-soluble fiber make the metal surface. This is to make it easier to separate the outer layer bodies 3 and 31 made of water-soluble fibers, and to make it easier for hot water to permeate into the gap between the rope body 2 and the outer layer bodies 3 and 31 together with the capillary phenomenon of the fibers.
Further, in order to make the appearance of the metal strands 2A and 2B "mirror-like", it is preferable to use both the reduced-diameter wire drawing process with a diamond die and the bright heat treatment in order to develop the mirror-like high brightness. ..

Further, in order to further enhance the solubility of the outer layer bodies 3 and 31 in hot water, the outer layer bodies 3 and 31 made of twisted yarn have a melting treatment temperature of 55 ° C. or higher, and the raw yarn used for the twisted yarn is the raw yarn. A water-soluble fiber containing polyvinyl alcohol as a main component, preferably having an average degree of polymerization of 1000 or more and 2000 or less and a saponification degree of 86 mol% or more and 92 mol% or less, as in the case of improving the water solubility of the above. More preferably, it is a water-soluble fiber containing polyvinyl alcohol as a main component, which has an average degree of polymerization of 1200 or more and 2000 or less and a saponification degree of 86 mol% or more and 90 mol% or less.
Thereby, the solubility of the twisted yarn made of the raw yarn in hot water, that is, the solubility of the outer layers 3 and 31 in hot water can be enhanced.
The melting treatment temperature referred to here refers to the temperature at which the plying is suspended under water at 20 ° C. and continuously heated at a heating rate of 2 ° C./min, and the plying is melted by its own weight.
The melting temperature and time of the outer layer 3 and the outer layer 31 in the embodiment of the present invention reach from about 92 ° C. to 95 ° C. while continuing to raise the temperature and stirring, and then the twisted yarn is melted within about 30 minutes to 60 minutes. Is completed. However, the melting time varies depending on the number of raw yarns used for twisting the outer layer bodies 3 and 31 and the structure of the outer layer bodies 3 and 31.
In order to prevent deterioration of mechanical strength due to absorption of moisture from the air and sweat from the human body and to improve workability during knitting of the knotted net, the equilibrium moisture content of the yarn is 12. % Or less, preferably 10% or less.

Further, the raw yarn used for the plying of the outer layer bodies 3 and 31 of the present invention is more preferably a water-soluble fiber containing polyvinyl alcohol as a main component and a carboxylate.
The reason for this is that by further increasing the solubility of the raw yarn in hot water, the solubility of the twisted yarn is increased, and the solubility can be further enhanced by the mutual dissolution chain between the raw yarn and the twisted yarn.
Specifically, when the twisted yarn is immersed in hot water, the raw yarns are entangled with each other to form a water-retaining gel while repeating swelling and contraction, which prevents new hot water from penetrating. As a result, the contact area of the entire twisted yarn with hot water is reduced, and as a result, the dissolution of the entire twisted yarn is slowed down.
On the other hand, in the case of a twisted yarn using a yarn in which the carboxylate is unevenly distributed, the carboxylate unevenly distributed in the yarn is peeled off from the yarn and in hot water as the swelling and contraction are repeated. It falls off (falls). Then, the area of the raw yarn that has been peeled off becomes the contact area with new hot water. It is considered that the solubility of the twisted yarn is further enhanced by the repeated peeling and dropping of the carboxylate and the contact with new hot water. It is considered that the reason why the carboxylic acid salt falls off from the raw yarn before it dissolves is that the solid carboxylic acid salt requires a large amount of energy to be converted into a liquid state and the liquefaction rate is slow.

The amount of the carboxylic acid salt of the water-soluble fiber containing the carboxylic acid salt containing polyvinyl alcohol as a main component is 0.05% by mass or more and 2.0% by mass or less.
The reason for this is that if it is below the above range, it becomes difficult to obtain the remarkable solubility improving effect of the twisted yarn, and if it exceeds the above range, the desired mechanical strength property is affected by the degree of uneven distribution of the carboxylate. This is because it is considered that there are cases. Preferably, it is 0.05% by mass or more and 1.5% by mass or less.
As the carboxylate, sodium acetate or the like is used as the saponification catalyst, calcium acetate or the like is used as the saponification catalyst, or the saponification catalyst is used. When lithium hydroxide is used, it is lithium acetate or the like.

Next, Example 2 of the nodule net body 80 having the nodule portion of the present invention will be described.
FIG. 7A shows a knotted net having a mesh shape having a side length of 20 mm to 200 mm and forming a knot portion 83 with the striatum 81 and the striatum 82, as in the first embodiment. Shows body 80.
The nodule net body 80 applies tension to the nodule net body 70 formed by melting and removing the outer layers 3 and 31 made of twisted yarn in hot water having a melting treatment temperature of 55 ° C. or higher. By adding, the nodule 83 is tightened.
Therefore, the striatum 81 is obtained by dissolving and removing the outer layer 3 of the striatum 1 or the outer layer 31 of the striatum 11 used for the striatum 71 of the first embodiment. The same applies to the striatum 82. Therefore, the striatums 81 and 82 are substantially both changed to the rope body 2. FIG. 7B is a perspective view showing a state in which the striatum 81 and 81 are changed to the rope body 2.

Here, the dissolution mechanism of the striatums 81 and 82 used for the nodule network 80 in hot water will be described. Since the striatum 81 and 82 are the striatum 1 or the striatum 11 before dissolution, the dissolution mechanism of the striatum 1 will be described here, and then the dissolution mechanism of the striatum 11 will be described. ..
The outer layer 3 of the striatum 1 includes a first layer 3A of spirally wound twisted yarn and a second layer 3B of twisted yarn wound in the direction opposite to that of the first layer 3A.
When the striatum 1 is immersed in hot water, the twisted yarn of the second layer 3B, which is in direct contact with hot water, begins to rotate in the direction opposite to the winding direction while swelling.
Then, with a slight delay, the twisted yarn of the first layer 3A released from the winding of the second layer 3B begins to rotate in the direction opposite to the winding direction while swelling.
After that, the twisted yarn whose internal structure has collapsed due to swelling and contraction is a melting mechanism that is thin and melts.

Next, the dissolution mechanism of the striatum 11 will be described.
The outer layer 31 of the striatum 11 is a braid in which eight bundles of twisted yarn are used and twisted for each bundle.
When the striatum 11 is immersed in hot water, each bundle is twisted and twisted, and among the crossed twisted yarns, the twisted yarn at the intersection that is in direct contact with the hot water begins to swell.
Then, with a slight delay, the twisted yarn on the rope body 2 side released from the tightening of the intersection swells.
After that, the twisted yarn whose internal structure has collapsed due to swelling and contraction is a melting mechanism that is thin and melts.
The effect of improving the solubility of the raw yarn used for the plying using a water-soluble fiber containing polyvinyl alcohol containing a carboxylate as a main component is as described above.

As described above, in the second embodiment of the present invention, the knotted net body 80 having the knotted portion 83 is composed of the striatum 81 and 82, and the striatum 81 and 82 are each made of the twisted yarn of the striatum 1. The outer layer body 3 or the outer layer body 31 made of twisted yarn of the striatum 11 is dissolved and removed in hot water.
The reason for this is that the rope body 2 in which soft metal strands are twisted has a large tensile breaking elongation and a small tensile breaking force, so that the rope body 2 alone is used to knit a knotted net body having a knot. Is extremely difficult.
In order to solve this problem, first, the strip body 1 is provided with outer layers 3 and 31 on the outer periphery of the rope body 2, which have a smaller tensile breaking elongation than the rope body 2 and a larger tensile breaking force than the rope body 2. , 11 is knitted into a knotted net body having a knot portion, and then the outer layer bodies 3 and 31 are dissolved and removed by heat treatment (dissolution treatment), and further, the outer layer bodies 3 and 31 are dissolved. Tension is applied to the loose knots to tighten the loose knots.
The nodule 83 is hard to loosen due to both the adhesion action due to the contact between the metal wires of the same material and the physical adsorption action due to the mutual contact between the mirror-shaped metal wires.
As a result, a nodule network 80 having a nodule 83, which has a nodule portion in which the mesh is less likely to be deformed due to changes in the environment and is more difficult to loosen, and which can ensure safety from the viewpoint of flameproofing of the facility, is obtained. be able to.

Next, the method of manufacturing the nodule net body 80 having the nodule portion 83 of the present invention will be described. The knotted net body 80 is obtained by dissolving and removing the outer layers 3 and 31 of the striatums 1 and 11 used for the knotted net body 70. Hereinafter, each step will be described.
Process 1. A step of knitting a knotted net body 70 having a knotted portion 73 using the striatums 1 and 11 and a step of knitting.
Process 2. A step of filling the melting tank with water having a weight of 30 times or more the weight of the outer layers 3 and 31 and raising the temperature to 55 ° C. or higher as the melting treatment temperature.
Process 3. A step of immersing the nodule network 70 in a melting tank having a melting treatment temperature or higher, and
Step 4. A step of immersing in a melting tank for 10 minutes or more and 2 hours or less to dissolve and remove the outer layers 3 and 31.
Process 5. The nodule network 80 having the nodule 83, characterized in that the nodule network formed by melting and removing the outer layers 3 and 31 is taken out from the melting tank, tension is applied, and the nodule is tightened. It is a manufacturing method of.
Further, the steps 2 to 5 may be repeated depending on the knotting method of the nodule, the structure of the outer layer used for the striatum, the dissolved state of the outer layer, etc., or the temperature and the immersion time may be changed. Good.
Thereby, a non-combustible nodule net body 80 having a nodule portion 83 made of a rope body 2 in which soft metal strands are twisted can be manufactured.

Specifically, for example, when a steam boiler is used as the temperature raising device,
As the step 2,
A step of filling the melting tank of the steam boiler with water having a weight of 30 times or more the weight of the outer layers 3 and 31 and raising the temperature to 50 ° C. by the steam in the steam pipe.
As step 3,
The step of putting the nodule net body 70 into the melting tank of the steam boiler, covering the knot net body 70 so that it does not rise from the hot water, and immersing the nodule net body 70.
As step 4,
By raising the steam temperature in the steam pipe, the temperature in the melting tank of the steam boiler is continuously raised from 92 ° C. to 95 ° C., and the steam boiler is immersed in the melting tank for 10 minutes or more and 2 hours or less while continuing to stir. The process of dissolving and removing the outer layers 3 and 31 and
As step 5,
The nodule nets from which the outer layers 3 and 31 were melted and removed were taken out from the melting tank, and the nodule nets taken out were passed through the meshes at both ends in the vertical mesh direction (direction perpendicular to the knitting mesh direction) and passed through the metal rods in the horizontal mesh direction (horizontal mesh direction Tension (40% or more and 80% or less of the tensile breaking force of the nodule in this example) is applied in the same direction as the knitting net direction for several seconds to several minutes (10 seconds to 5 minutes in this example) to add tension to the nodule. This is a method for manufacturing a nodule net 80 having a nodule 83 formed by tightening and then releasing tension.
Thereby, a non-combustible nodule net body 80 having a nodule portion 83 made of a rope body 2 in which soft metal strands are twisted can be manufactured.
Further, as described above, the steps 2 to 5 may be repeated, and the temperature and the immersion time may be changed.
Then, in the above-mentioned step 2 of the example using the steam boiler, the "step of raising the temperature to 50 ° C." was set, but this is because the safety of the work when the knotted net body is put into the melting tank is taken into consideration. The temperature may be higher than 50 ° C. as long as the knotted net body can be safely put into hot water having a melting treatment temperature of 55 ° C. or higher.
Further, in the above-mentioned step 5 of the example using the steam boiler, the direction and means for applying tension (such as passing a gold rod through a universal mesh) have been described, but the present invention is not limited to these as long as tension can be applied to the nodule.

Then, another embodiment of the present invention will be described.
A striatum used for a nodular network having a nodule.
The striatum includes a rope body and an outer layer body on the outer periphery of the rope body.
The rope body is made by twisting a plurality of soft austenitic stainless steel metal strands.
The outer layer body is formed by spirally winding or braiding a plurality of twisted yarns, and the twisted yarn is a twisted yarn obtained by twisting a plurality of raw yarns at a frequency of 50 times / m or more and 2500 times / m or less. And the fineness is 31 dtex or more and 660 dtex or less.
The raw yarn is a polyvinyl alcohol having an average degree of polymerization of 500 or more and 2500 or less, a saponification degree of 86 mol% or more and 99 mol% or less, and a tensile breaking strength of 3.3 CN / dtex or more and 5.5 CN / dtex or less. A water-soluble fiber that is the main component
The coefficient of friction of the striatum is μa, the load load applied to one side of the striatum is W, the tensile operating force for pulling the load load W from the other side is F, and one load-bearing side to the other. When the angle at which the direction of the striatum changes to the tension operation side of is θ (radian) and the base of the natural logarithm is е,
The operating force ratio (F / W) of the striatum between the load load W and the tensile operating force F with respect to the load load W is
1 <еμa × θ <е0.273 × θ
It is a striatum characterized by satisfying the relational expression of.
Further, as described in claim 6,
The striatum is characterized in that the raw yarn of the outer layer is a water-soluble fiber containing polyvinyl alcohol as a main component and a carboxylate.
Then, as described in claim 7,
It is a nodule net body having a nodule portion characterized by being knitted using the striatum.
And again, as described in claim 8.
A nodule net having a nodule formed by knitting using the striatum.
The outer layer of the striatum is a nodule net body formed by melting and removing the striatum in hot water having a melting treatment temperature of 55 ° C. or higher, and applying tension to the nodule to tighten the nodule. It is a nodular network having.
Further, as described in claim 9, it is a method for manufacturing a nodule network having a nodule.

1,11,71,72,81,82 Striatum 2 Rope body 3,31 Outer layer body 70,80 Nodule net body

In a nodule network having a nodule, the outer layer of the striatum is melted in hot water at a melting treatment temperature of 55 ° C. or higher, and the nodule is removed by applying tension to tighten the nodule. It is a nodule network having a nodule portion characterized by being composed of.

The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body includes a first layer of spirally wound twisted yarn on the outer periphery of the rope body, and a second layer of spirally wound twisted yarn on the outer periphery of the first layer in the direction opposite to the first layer. It is a thing. The twisted yarns of the first layer and the second layer are both twisted yarns of 12 or more and 200 or less at a twisting rate of 200 times / m or more and 2000 times / m or less, and have a fineness of 110 dtex or more and 660 dtex or less. It is as follows.
The striatum is characterized in that the tensile breaking elongation is 22.5% or less and the tensile breaking force is 60 N or more.
Accordingly, the tensile while decreasing elongation at break, improved tensile fracture strength, and can be obtained striatum of a linear characteristic while having a high flexibility. In addition, the spiral groove structure in the longitudinal direction formed by the spirally wound twisted yarn increases the surface pressure applied to the twisted yarn and improves the slipperiness between the striatum and the upper hook during knitting. Can be done.

In a nodule network having a nodule, the outer layer of the striatum is melted in hot water at a melting treatment temperature of 55 ° C. or higher, and the nodule is removed by applying tension to tighten the nodule. It is a nodule network having a nodule portion characterized by being composed of.
The reason for this is to obtain a non-combustible, nodular network with nodules made of soft metal wire.
As a result, the mesh has a nodule that is hard to be deformed and loosened due to changes in the environment, and has high flexibility. In particular, a non-combustible nodule to ensure safety from the viewpoint of flameproofing of facilities, etc. A nodular network having the above can be provided.

Next, using FIG. 2, the striatum 11 (reference numeral S) of the second embodiment of the present invention is compared with the striatum (reference numeral A2) having the same specifications as those of Patent Document 1, and the mechanical strength is increased. The characteristics will be described.
FIG. 2 shows the mechanical strength characteristics under the same temperature conditions as those at the time of measuring the mechanical strength characteristics of reference numeral A2 shown in FIG.
According to FIG. 2, the mechanical strength characteristics of the striatum 11 (reference numeral S) of the present invention are a tensile breaking elongation of 18.8%, a tensile breaking force of 80.2N, and a tensile breaking elongation of 8%. It shows linear characteristics up to tensile fracture beyond.
Therefore, similarly to the striatum 1 of the first embodiment, the striatum of Patent Document 1 (reference numeral A1) and the striatum of the same specifications as Patent Document 1 (reference numeral A2) have a non-linear characteristic having a plateau. On the other hand, the striatum 11 (reference numeral S) of the present invention exhibits linear characteristics, and the mechanical strength characteristics are significantly different from those of the striatum 11 of the present invention.
The reason for this is that the striatum 11 of the present invention is tensioned by using eight bundles of twisted yarn having a fineness of 220 dtex and providing an outer layer body 31 composed of a braid that is twisted for each bundle on the outer periphery of the rope body 2. This is because the striatum 11 has low breaking elongation, high tensile breaking force, and exhibits linear characteristics.
Supplementally, the estimated value (calculated value) of the tensile breaking force of the outer layer body 31 is 77.44N {220 ( dtex) × 4.4 (CN / dtex) × 8/100}, and the actual tensile breaking force. The difference (2.76N) from (80.2N) is considered to be due to the structure of the twisted twisted yarn and the braided twisted yarn. The same applies to tensile elongation at break.
Then, similarly to the striatum 1 of the first embodiment, it is possible to exhibit higher flexibility in the radial direction of the striatum 11 than the striatum of Patent Document 1.
Further, the slipperiness of the striatum 11 can be improved by the mesh-like uneven structure of the twisted yarns of the outer layer 31 that are twisted in a mesh shape in the longitudinal direction. The slipperiness of the striatum 11 will be described later.

Next, Example 2 of the nodule net body 80 having the nodule portion of the present invention will be described.
FIG. 7A shows a knotted net having a mesh shape having a side length of 20 mm to 200 mm and forming a knot portion 83 with the striatum 81 and the striatum 82, as in the first embodiment. Shows body 80.
The nodule net body 80 is formed by melting and removing the outer layer bodies 3 and 31 made of twisted yarn in hot water having a melting treatment temperature of 55 ° C. or higher, and tensioning the nodule net body 70 of the first embodiment. The nodule 83 is tightened by adding.
Therefore, the striatum 81 is obtained by dissolving and removing the outer layer 3 of the striatum 1 or the outer layer 31 of the striatum 11 used for the striatum 71 of the first embodiment. The same applies to the striatum 82. Therefore, the striatums 81 and 82 are substantially both changed to the rope body 2. FIG. 7B is a perspective view showing a state in which the striatum 81 and 81 are changed to the rope body 2.

Then, another embodiment of the present invention will be described.
A striatum used for a nodular network having a nodule.
The striatum includes a rope body and an outer layer body on the outer periphery of the rope body.
The rope body is made by twisting a plurality of soft austenitic stainless steel metal strands.
The outer layer body is formed by spirally winding or braiding a plurality of twisted yarns, and the twisted yarn is a twisted yarn obtained by twisting a plurality of raw yarns at a frequency of 50 times / m or more and 2500 times / m or less. And the fineness is 31 dtex or more and 660 dtex or less.
The raw yarn is a polyvinyl alcohol having an average degree of polymerization of 500 or more and 2500 or less, a saponification degree of 86 mol% or more and 99 mol% or less, and a tensile breaking strength of 3.3 CN / dtex or more and 5.5 CN / dtex or less. A water-soluble fiber that is the main component
The coefficient of friction of the striatum is μa, the load load applied to one side of the striatum is W, the tensile operating force for pulling the load load W from the other side is F, and one load-bearing side to the other. When the angle at which the direction of the striatum changes to the tension operation side of is θ (radian) and the base of the natural logarithm is е,
The operating force ratio (F / W) of the striatum between the load load W and the tensile operating force F with respect to the load load W is
1 <е ^{μa × θ} <е ^{0.273 × θ}
It is a striatum characterized by satisfying the relational expression of.
Further, as described in claim 5,
The striatum is characterized in that the raw yarn of the outer layer is a water-soluble fiber containing polyvinyl alcohol as a main component and a carboxylate.
Then, as described in claim 6,
It is a nodule net body having a nodule portion characterized by being knitted using the striatum.
And again, as described in claim 7.
Formed by net weaving using the striatum, the nodal network having a node portion,
A nodule characterized in that the outer layer of the striatum is melted and removed in hot water at a melting treatment temperature of 55 ° C. or higher, and tension is applied to the nodule to tighten the nodule. It is a nodular network having a part.
Further, as in claim 8 , it is a method for manufacturing a nodule network having a nodule.

Claims (9)

A striatum used for a nodular network having a nodule.
The striatum includes a rope body and an outer layer body on the outer periphery of the rope body.
The rope body is formed by twisting a plurality of soft austenitic stainless steel metal strands, and when the tensile elongation at break exceeds 8%, the increase in tensile breaking force gradually decreases, leading to tensile fracture. Shows non-linear characteristics with plateaus up to
The outer layer body is formed by spirally winding or braiding a plurality of twisted yarns, and the twisted yarn is a twisted yarn obtained by twisting a plurality of raw yarns at a frequency of 50 times / m or more and 2500 times / m or less. And the fineness is 31 dtex or more and 660 dtex or less.
The raw yarn is mainly composed of polyvinyl alcohol having an average degree of polymerization of 500 or more and 2500 or less, a saponification degree of 86 mol% or more and 99 mol% or less, and a tensile breaking strength of 3.3 CN / dtex or more and 5.5 CN / dtex or less. A water-soluble fiber that is an ingredient
The outer layer body has a tensile breaking elongation smaller than that of the rope body and a tensile breaking force larger than that of the rope body.
The striatum is characterized in that it exhibits linear characteristics up to tensile fracture even if the tensile elongation at break exceeds 8%. The striatum according to claim 1.
The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body is a first layer of spirally wound twisted yarn on the outer circumference of the rope body, and a second layer of spirally wound twisted yarn on the outer periphery of the first layer in the direction opposite to the first layer. With and
The twisted yarns of the first layer and the second layer are both twisted yarns of 12 or more and 200 or less twisted at a number of twists of 200 times / m or more and 2000 times / m or less, and have a fineness of 110 dtex. More than 660 dtex or less
The striatum is characterized in that the tensile elongation at break is 22.5% or less and the tensile breaking force is 60 N or more. The striatum according to claim 1.
The rope body has a tensile breaking elongation of 30% or more and a tensile breaking force of 54 N or less.
The outer layer body is formed by braiding two or more bundles and 16 or less bundles of twisted yarn on the outer circumference of the rope body.
The twisted yarn is made by twisting 12 or more and 200 or less raw yarns at a twisting frequency of 50 times / m or more and 2000 times / m or less, and has a fineness of 110 dtex or more and 660 dtex or less.
The striatum is characterized in that the tensile elongation at break is 20% or less and the tensile breaking force is 70 N or more. The striatum according to any one of claims 1 to 3.
The coefficient of friction of the striatum is μa, the load load applied to one side of the striatum is W, the tensile operating force for pulling the load load W from the other side is F, and one load-bearing side to the other. When the angle at which the direction of the striatum changes to the tension operation side of is θ (radian) and the base of the natural logarithm is е,
The operating force ratio (F / W) of the striatum between the load load W and the tensile operating force F with respect to the load load W is
1 <е ^{μa × θ} <е ^{0.273 × θ}
A striatum characterized by being represented by the relational expression of. The striatum according to any one of claims 1 to 4.
The metal wire of the rope body has a mirror-like appearance.
The outer layer is a water-soluble fiber containing polyvinyl alcohol as a main component, having a melting treatment temperature of the twisted yarn of 55 ° C. or higher, a saponification degree of the raw yarn of 86 mol% or more and 92 mol% or less. Characteristic striatum. The striatum according to claim 5.
A striatum characterized in that the raw yarn of the outer layer is a water-soluble fiber containing polyvinyl alcohol as a main component and a carboxylate. A nodule net body having a nodule portion, which is formed by knitting using the striatum according to any one of claims 1 to 6. A nodule net having a nodule, which is knitted using the striatum according to any one of claims 1 to 6.
The outer layer of the striatum is a nodule net body formed by melting and removing the striatum in hot water having a melting treatment temperature of 55 ° C. or higher, and applying tension to the nodule to tighten the nodule. Nodular network with. The method for manufacturing a nodule network having a nodule according to claim 8.
A step of knitting a nodule net having a nodule using the striatum according to any one of claims 1 to 6.
A step of filling the melting tank with water having a weight 30 times or more the weight of the outer layer and raising the melting treatment temperature to 55 ° C. or higher.
The step of immersing the nodule network in a melting tank having a melting treatment temperature or higher, and
A step of immersing in a dissolution tank for 10 minutes or more and 2 hours or less to dissolve and remove the outer layer body, and
A method for producing a nodule net having a nodule, which comprises a step of taking out the nodule net formed by melting and removing the outer layer from the melting tank, applying tension, and tightening the nodule.

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