JP2002115165A - Three-dimensional netlike body and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a three-dimensional netlike body bendable at arbitrary parts. SOLUTION: A great number of continuous filaments which are composed of a thermoplastic synthetic resin and have 0.1-1.5 mm thickness are piled in a netlike form, fused, bonded and integrated at their crossing points to form a netlike body having 0.1-4 mm substantial thickness. The netlike body is a three-dimensional netlike body of mat shape which is waved in an uneven state in a cross section in the thickness direction, has 4-50 mm apparent thickness and is provided with large voids by unevenness of the netlike body. The netlike body is provided with a belt-like readily bendable belt made flat by pressing in the length direction of the three-dimensional netlike body intermittently in an arbitrary width in the whole width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a drainage material at the bottom of a waste disposal site, a drainage material at a separation wall of a tunnel, and the like. For drainage materials that can be discharged, it can correspond to civil engineering materials that require greater compressive stress than conventional drainage materials, and of course, soil retention, slope reinforcement work and seawall protection in conventional civil engineering base materials and greening work In the field of civil engineering such as soil runoff prevention and ground runoff prevention in construction, and in fields where larger bulk is required, three-dimensional net-like structures are assembled by bending or gluing them, The present invention also relates to a three-dimensional net-like body which is adapted to a bedding field requiring a large gap such as a bed pad and a cushioning property.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent No. 1508311, a three-dimensional net has a thin net having a substantial thickness of 0.1 to 4 mm, which is wavy in an uneven cross section in the thickness direction. Is a mat-shaped three-dimensional net having a large void formed by the unevenness of the net is 4 to 50 mm, and the three-dimensional net is used in a waste disposal site.
The bottom surface is formed of a water-blocking structure to prevent groundwater contamination due to water leakage, and a planar drainage material that collects and drains sewage flowing from the waste layer is used on the upper part of the structure. Is disclosed in Japanese Patent Publication No. 58-9186 and
The filament disclosed in Japanese Patent Publication No. 247060 is used as a mat-like three-dimensional net having a certain thickness by being fused and bonded and integrally formed into an uneven shape, and utilizing this three-dimensional net. JP-A-5-118196
The surface drainage material that guides water discharged from the back surface of a tunnel or a concrete retaining wall and is drained as described in Japanese Patent Application Laid-Open Publication No. H10-157, is simple and frequently used because the drainage material is made of plastic and lightweight. In addition, as a water-blocking structure of the above-mentioned waste disposal site, it is simpler to use a rubber sheet or a plastic sheet as a waterproof material as compared with a rigid construction method such as cementing, which has been conventionally performed. There is a problem that the sheet is damaged and water leaks, and attempts have been made to improve these.A drainage material is provided in the middle layer with upper and lower water-impervious membranes arranged, and when water flowing away from the drainage material occurs, the drainage material is Injection of a water impervious agent to make the water impervious perfect, intercepting the drainage material of the double liner method that also checks and repairs the impermeable structure, and handling as the impermeable structure For easy use, using a three-dimensional net with a large void like the present invention,
Japanese Patent Application Laid-Open No. 6-34 discloses a technique of spraying a water-stopping material on the three-dimensional network body with a substance that easily swells with water such as bentonite.
No. 1124, Japanese Unexamined Patent Publication No. Hei.
Japanese Unexamined Patent Publication No. Hei 7-119130 discloses that a portion where the water stopping effect is reduced and water leakage is assumed is assumed until leakage occurs. However, in any case, a three-dimensional net having a higher pressure resistance has been desired.

[0003] In addition, a variety of construction methods have been proposed to maintain a more natural environment by filling soil and sand into civil engineering materials to maintain a more natural environment. Although various measures have been added, the soil vegetation method of attaching and fixing a three-dimensional net on an inclined surface and spraying soil containing seeds is still excellent because of excellent workability and economical. Widely used. And
In order to retain more soil, a bulkier three-dimensional net has been desired.

[0004]

[Problems to be solved by the invention]
No. 9186 and Japanese Patent Application Laid-Open No. H11-247060 disclose a three-dimensional net-like body in which the filaments are fused and adhered to each other, and have a uniform thickness and a mat-like shape with a certain thickness. Conventionally, it has been used for greening work by covering soil, but it is difficult to bend or roll it because it is a thick three-dimensional net, and it is difficult to cut it easily. is there. In particular, in the development of drainage materials where earth pressure is applied, compressive stress is always applied in the thickness direction, and it is necessary to quickly discharge runoff water, the amount of filaments is initially increased, and the mesh becomes more dense. However, the product has become rigid, the flexibility of the product has been lost, and handling has become a major problem. In addition, recently, the pleated three-dimensional mesh body, which is lighter, has a higher porosity, and has a higher compressive stress than conventional drainage materials, developed by the present inventors, has been strengthened in the thickness direction even if it is lightweight, so that it is rolled, It is difficult to break and cut on site.

[0005] Furthermore, at present, energy saving effects of reducing cooling costs by covering with soil and natural appearance can be produced by vegetation vegetation, so that the rooftop greening of buildings is attracting attention. However, there is no vegetation base material with excellent soil retention that can sufficiently cope with steep slopes.Furthermore, floating lake water is floated on the lake surface and purification of lake water is carried out with vegetated plants. A more bulky and rigid three-dimensional network, such as an artificial floating island to be performed, was required, and applications such as a three-dimensional network structure constructed by further pleating the three-dimensional network and assembling them occurred.
The need to roll and provide convenience for storage and storage becomes stronger,
In addition, for the assembly, it was necessary to be able to easily bend or adhere, but with the conventional one, it was not possible to bend it neatly and there was no flat part for adhesion, so it was enough There was a problem that it could not be bonded.

[0006] An object of the present invention is an application in which a compressive stress is always applied in the thickness direction due to an applied earth pressure. The compressive stress is larger than that of a conventional drainage material.
A three-dimensional reticulated body and its cylindrical body that can quickly discharge runoff water while maintaining a high porosity, and a three-dimensional body that has the same compressive strength and has reduced the amount of filaments compared to conventional ones to improve soil filling A three-dimensional net structure having a thickness of several tens of cm, which was impossible with a conventional three-dimensional net, by fixing and assembling these three-dimensional nets as a net, or a net having higher bulk and greater rigidity than before. In order to use as a three-dimensional reticulated body, a three-dimensional reticulated body is provided intermittently with a band-shaped flat portion provided in a part of the three-dimensional reticulated body, and a three-dimensional reticulated body having a bent portion or a cut portion that can easily make the flat band as a civil engineering material. To provide.

[0007]

SUMMARY OF THE INVENTION Observing the behavior of a conventional mesh under compression, the greater the number of walls made of a mesh which is fused and bonded to the upper and lower surfaces, the higher the compressive stress, and Is a triangular surface having one ridge line, and the side corresponding to the ridge line is fixed by a flat body such as a non-woven fabric and is restricted from spreading. Was found to be large, and a cross-section in the thickness direction was devised with a pleated folded shape,
When the pressure resistance is improved, the rigidity is also increased, and a major problem that cannot be folded or wound has occurred. On the other hand, it has been found that these problems can be solved by providing a band-shaped flat portion over the entire width in the width direction of the three-dimensional net-like body and forming a bent portion for bending and winding at this portion. Specifically, this can be achieved by engraving a convex portion or a concave portion over the entire width in the width direction on a mold for accumulating continuous filaments, but civil engineering materials have various product specifications depending on circumstances such as construction site. It is extremely convenient to be able to arbitrarily determine the interval and width of the band-shaped flat portion. However, when engraving in a mold, the interval is fixed, and there is a new problem that the interval and width cannot be set to a convenient interval or width. Occurred. Therefore, as a result of diligent examination, the belt material of the packing material is placed on the mold, these are arranged at a convenient constant interval in the length direction, and fixed to the mold, thereby achieving the purpose. Therefore, the mold may be simple, which is extremely convenient.

That is, according to the present invention, a trapezoidal block having a cross section obtained by slightly cutting and removing a vertex of a triangle is arranged on a plane, and an upper side and a bottom face of the trapezoid are respectively on the same plane. On the mold, at any interval in the length direction of the mold, the thickness is 0.3 to 2 mm over the entire width, and the width is 3 to
Using a mold equipped with a metal bar of 20 mm, and using a three-dimensional net-like body manufacturing equipment as illustrated in FIG. 1 equipped with a press roll pressed against the mold at a position where the continuous filament is insufficiently solidified. While moving the mold at a constant speed, a large number of continuous filaments made of a thermoplastic synthetic resin and having a thickness of 0.1 to 1.5 mm are spun onto the mold, and are attached to the mold. The continuous filaments are superimposed in a net-like shape, and are fused and bonded at the intersections to form a net-like body having a thickness of several mm, which is wavy in the thickness direction to form large voids in the net-like body. The present invention relates to a three-dimensional net-like body having a flat band-like easily bent portion at arbitrary intervals, and a method for producing the same.

Further, in the mold used, one side of the triangular prism is on a plane, and the upper part of the ridge line where the triangular prism is not on the plane is cut and removed in parallel on the plane, and the triangular prism is arranged in the longitudinal direction. A mold having a shape regularly arranged at regular intervals, wherein the mesh is pleated in a cross section in a thickness direction, and a large number of ridges and grooves continuous in one direction are alternately formed; By forming a three-dimensional net with an apparent thickness of several cm that has become a mat shape with large voids formed by the unevenness of the three-dimensional net, a similar unevenness in the thickness direction of the conventional three-dimensional net connects the upper and lower surfaces without planning. The number of walls per unit surface area and the area of the walls can be overwhelmingly increased compared to a three-dimensional net where no consideration is given to increasing the number of walls of the net, and these walls cause compressive stress in the thickness direction of the three-dimensional net. Large resistance against To the, to the three-dimensional net-like body of high pleats rigidity than conventional products, it is very convenient.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings of embodiments. FIG. 1 shows a manufacturing method in which a metal bar for forming a flat portion for bending at intermittent intervals, particularly an arbitrary interval, is provided on a three-dimensional net having a plurality of pleated cross-sectional structures according to an embodiment of the present invention. Figure 2 shows a schematic side view of the device. FIG. 2 is an enlarged view of the oblique portion of FIG. 1A.

The form of the mesh according to the present invention is, for example, shown in FIG.
4, the reticulated body is formed by discharging a large number of continuous filaments 1 from a spinneret 2 for melt spinning to a mold 4 in which a triangular prism is laid down, and is superposed in a net shape. Then, the intersection is melt-bonded, pressed against the upper part of the convex surface of the mold by a pressure roller 6, and the fusion-bonded net on the convex part of the die is further pressed, thereby shaping the three-dimensional net and forming the upper end of the ridge. Reinforce, as a pleated three-dimensional net,
The three-dimensional net is a mat-shaped three-dimensional net having large triangular prism-shaped voids at the lower part of the ridge and the upper part of the groove, but the three-dimensional net having intermittent ridges and grooves to form a flat flat part. Body 5.

[0012] Specifically, in order to form the flat portion, engraving of a convex portion or a concave portion may be performed on the mold over the entire width. However, since the interval between the flat portions of the product is fixed, it is more preferable. In this method, a metal bar having an arbitrary width is installed at an arbitrary interval on a mold, and a mesh portion laminated on the metal bar is pressed by a pressure roll 6 to form a flat portion. In particular, a three-dimensional mesh body using a metal bar according to one embodiment of the present invention is extremely preferable because a conventional mold can be used and the degree of freedom in setting the interval is large.

In an application for improving pressure resistance, which is one mode of the present invention, a compressive force in a thickness direction is received by a triangular cross-sectional structure in which the surface layer of a three-dimensional net-like body is arranged side by side in an orderly manner. By exerting the effect of improving the pressure resistance by that, in addition, by arranging the triangular cross-sectional structure in a pleated manner in the lateral direction, by maximizing the triangular cross-sectional structure that contributes to the pressure resistance, the overall However, as the pressure resistance improves, the rigidity of the three-dimensional net increases, and bending and winding up become impossible. Therefore, intermittently, preferably at regular intervals, more preferably at arbitrary intervals,
It is necessary to provide a flat portion which is convenient for bending and bonding, and the flat portion is provided by the above-described method. In addition, for the bending and winding, it is preferable that the large number of ridges arranged in an orderly manner and the easily bent portion are orthogonal to each other.

For the purpose of improving the pressure resistance, it is preferable that both sides, which are the oblique sides of the triangular cross-sectional structure formed by the pleated portions of the mesh body 5, have high compressive strength. The use of a mold that can form a mesh that is lined in the direction of machine travel can be used to make each side a uniform mesh, and the mold 4 in which convex portions are engraved on the mold or the full width at regular intervals. By using a mold 14 provided with metal bars extending over a distance, a three-dimensional net-like body 5 of the present invention having a cut as illustrated in FIGS. 3 and 4 can be obtained.

In another embodiment of the present invention, the mesh member 13 shown in FIG. 6 has a metal bar 16 mounted on a mold 16 based on a triangular prism block oblique to the machine traveling direction as shown in FIG. 5C. Can be produced by installing the intermittently.

In the mold 4 used in the present invention, in which the shape in which the triangular prism is laid down is engraved, the bottom surface of the mold is set as one side, and the ridge line formed by the vertices sandwiched between the equal sides is defined as the projecting upper surface of the mold. Do
The cross section is preferably an isosceles triangle, and particularly preferably an equilateral triangle, but may be an inequilateral triangle if the distance between the projecting upper surface and the bottom surface is the same. In addition, because the ridgeline is sharp, a portion having insufficient press-fitting property with the plane body is likely to occur, and the plane body may be damaged because the ridgeline is sharp for the convenience of hitting and pressing the net-like body with the compression roller 6. The ridgeline is preferably cut at an obtuse angle or the upper part to be chamfered, and at the bottom of the mold,
The interval between the triangular prisms should be 3 mm or more, preferably 5 mm. In addition, when the continuous filament is discharged into these chamfered dies to form the net of the present invention, the upper end and the bottom are drawn with an appropriate radius, and the appearance and pleated cross sections can be triangular.

The material used for the continuous filament of the present invention is a thermoplastic resin such as a polyester such as polypropylene, polyethylene and polyethylene terephthalate and a polyamide such as nylon 6, and these copolymers are more preferable for enhancing flexibility. The polymer blends and polymer alloys thereof are also preferable.

The thickness of the continuous filament of the present invention is preferably from 0.1 to 1.5 mm from the viewpoint of strength and rigidity, preferably 1.5 m
If it is thicker than m, it is difficult to form the reticulated body of the present invention,
If the thickness is smaller than mm, the rigidity tends to cause a problem, which is not preferable.

The basis weight of the three-dimensional net of the present invention depends on the application, but is generally in the range of 100 to 3000 g / m ^{2. If} the pressure resistance is intended to be enhanced, the pressure resistance is determined by multiplying the strength of the continuous filament by the number of filaments. Problem, 150 ~
Preferably 1500 g / m ^2, depending on its thickness when the intended retention of soil, 200~1500g / m ² is preferred.

The thickness of the three-dimensional net of the present invention is preferably 4 to 40 mm when strengthening the pressure resistance, and is preferably 20 to 50 mm for maintaining the soil. If it exceeds 50 mm, the continuous filaments contact the mold and are cooled, so that the continuous filaments are difficult to reach and become uneven.

In the mold used in the present invention, it is preferable that the upper surface and the bottom surface of the mold are parallel to each other and that the upper surfaces of the convex portions of the mold are all on the same plane because of the use of the pressure roll 6.

In the present invention, in order to improve the form stability and tensile strength of the three-dimensional network, to further provide mutual engagement and portability, the continuous filament constituting the three-dimensional network is made of a flexible net. A three-dimensional net-like body reinforced with a flexible net entangled with the above is preferable. The flexible net used to reinforce the three-dimensional net-like body is formed by weaving a net such as a fishing net having a mesh of 15 to 50 mm square, a cold gauze using split yarn, or a yarn such as a multi-filament or a monofilament in the vertical and horizontal directions. A fishing net made of polyethylene terephthalate is particularly preferable in terms of strength reinforcement, and a net or a scrim net is conveniently used. Although the three-dimensional net-like body reinforced with the net is not shown, the net is arranged and laminated on a mold of the manufacturing apparatus illustrated in FIG. 1 and a continuous filament is spun from above the laminated net to obtain FIG. The continuous filament constituting the three-dimensional network as exemplified in (1) can be a three-dimensional network reinforced by a flexible net entangled with a flexible net. Further, in order to improve the pressure resistance, it is preferable to bond a nonwoven fabric to the surface on the side where the easily bent band forms the surface. The nonwoven fabric to be bonded is preferably a spunbond, needlepunch, spunlace or impregnated nonwoven fabric made of a material having a melting point at least 20 ° C. higher than the melting point of the continuous filament material. Although not shown, the three-dimensional net-like body to which such a nonwoven fabric is attached is provided with a nonwoven fabric in front of a pressure roller on a mold of the manufacturing apparatus illustrated in FIG. Thus, by bonding the continuous filament and the nonwoven fabric, a three-dimensional net-like body in which the nonwoven fabric is bonded can be obtained.

(Function) The three-dimensional net of the present invention is composed of continuous filaments, and a liquid such as water can be easily drained through the net, so that it is suitable as a drainage material at the bottom of a waste disposal site. Yes, solids such as soil can be filtered with this filament to control the outflow of solids, making it ideal as a civil engineering material for vegetation use that fills the soil. Becomes better. Further, by bonding the nonwoven fabric, a three-dimensional net having excellent pressure resistance can be obtained. In addition, by reinforcing the continuous filaments constituting the three-dimensional net with a flexible net, it is possible to improve the tensile strength and pressure resistance of the three-dimensional net, and to provide the three-dimensional net with engagement and portability. it can.

[0024]

Next, the effects of the present invention will be specifically described with reference to examples and comparative examples. (Examples 1 to 5 and Comparative Examples 1 and 2) The reticulated body of the present invention was added to the device illustrated in FIG.
The metal mold 14 can be efficiently manufactured by using a metal band having a width of 2 cm and a thickness of 0.8 mm installed at a predetermined interval over the entire width and fixing the ends of the metal band with screws.
A melt of an ethylene-propylene copolymer having a melting point of 140 ° C. and a melt flow rate of 18 g / 10 minutes was added to a melt having a pore size of 0.1 μm.
A die in which a continuous filament 1 having a fiber diameter of 0.7 mm is spun from a spinneret 2 in which a large number of 6 mm spinning nozzles are arranged in line, and a triangular prism moving at a constant speed is engraved. 3 and FIG. 4, the crossing points are fused and bonded to form a net 3, and the roll 6 is used to press-bond the mold and the net on the metal bar.
Are obtained. The mold was set at 16 in FIG. 5 and three-dimensional nets of Examples 6 and 7 having flat portions at arbitrary intervals were obtained using metal bars in the same manner as the mold 14.

Each of the three-dimensional nets of Examples 1 to 7 can be bent at the flat part, and the interval between the metal bars is 20c.
Assuming m, it could be wound. Moreover, when these were pleated and bonded by a hot air generator while pressing them according to the flat portion of another three-dimensional net-like body, they could be easily bonded.

Comparative Examples 1 and 2 were prepared in the same manner as in Examples 2 and 3 without using a metal bar, using a mold 16 conventionally used by the Company as illustrated in FIG. 5C. None of these could be bent neatly and tried to weld. However, first of all, it was not possible to press the parts to be welded. However, since the filaments are not bonded and integrated beforehand, the individual filaments are quickly melted, and it is extremely difficult to weld. When the above-mentioned bar is removed, a part of the bonded portion that has been bent is broken. And this became a major problem. Table 1 shows the compression performance of these Examples and Comparative Examples.

[0027]

[Table 1]

[0028]

According to one aspect of the present invention, the cross-section of the three-dimensional net is
It is a pleated shape in which triangles are connected horizontally, and one side is imagined as the upper and lower surfaces of the three-dimensional mesh. The triangle is firmly fixed to improve the pressure resistance, but the inside of the mesh is a mesh. The net is made of thermoplastic resin filaments, so it is bulky, has excellent air permeability and water permeability, and has a very high porosity. It is convenient to carry and construct, and has higher strength than conventional ones, so it can withstand tighter use conditions than conventional products, so it can be a more general-purpose vegetation civil engineering material, but improved pressure resistance The rigidity also increased in proportion to the above, so that it was not possible to wind or break, but these problems could be solved by arranging the flat part of the present invention. Furthermore, by using the metal bar which is one of the present invention, a three-dimensional net structure assembled by bonding a three-dimensional net of an arbitrary height can be made using the current mold, and extremely. It is economical and convenient for customers.

[Brief description of the drawings]

FIG. 1 is a schematic view of an apparatus for manufacturing a mesh body with improved pressure resistance according to the present invention.

FIG. 2 is an enlarged view of FIG.

FIG. 3 is a perspective view showing Embodiment 5 of the mesh body with improved pressure resistance of the present invention.

FIG. 4 is a view of a thirteenth embodiment in which the mold of the present invention is engraved and can be wound up.

FIG. 5 is a perspective view illustrating a mold. A: An example used for a three-dimensional net having a pleated cross section is shown. B: Mold A in which a flat portion is engraved. C: shows an example of a conventional mold. However, A and C are examples in which the metal bar is not mounted.

FIG. 6 is a perspective view showing one embodiment of a metal bar.

FIG. 7 is a perspective view showing one embodiment of a metal bar.

FIG. 8 is a perspective view for describing a three-dimensional net-like body reinforced with a flexible net in which a continuous filament is entangled with a flexible net.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 continuous filament 2 spinneret 3 net-like material in which continuous filaments are fused and bonded on a die 4, 14, 16 die (however, 14 and 16 have no metal bar attached) 5, 13-dimensional net of the present invention 6 Crimping rolls 7, 8 Guide rolls 9, 15, Metal bar 10 Flexible net 11 Non-woven fabric 12 Flat part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) D04H 3/16 D04H 3/16 4D004 E02B 3/12 E02B 3/12 4L047 E02D 3/00 102 E02D 3/00 102 17/20 103 17/20 103A // B09B 1/00 ZAB B09B 1/00 ZABA F term (reference) 2B022 AB02 AB04 BA02 BA23 BA25 BB02 2B314 NC38 PC15 PC23 PC24 2D018 DA02 2D043 DA03 DD05 DD10 DD13 2D044 DB01 4D004A CC17 4L047 AA14 AB03 AB07 BA08 BD03 CA12 CA15 CC06 CC10 CC15

Claims (7)

[Claims] 1. A thermoplastic synthetic resin having a thickness of 0.1
A large number of continuous filaments of up to 1.5 mm are superimposed in a net shape, and are fused and bonded at the intersections to form a net having a real thickness of 0.1 to 4 mm, and the net has a cross section in the thickness direction. It is a mat-shaped three-dimensional net having an uneven thickness, an apparent thickness of 4 to 50 mm, and a large void formed by the unevenness of the net, and intermittent in the length direction of the three-dimensional net. A three-dimensional net-like body characterized by being provided with a band-shaped easy-bend band which is pressed and flattened to an arbitrary width over the entire width. 2. A plurality of mat-shaped three-dimensional net-like bodies are pleated in a cross section in a thickness direction, and a plurality of continuous ridges and grooves arranged in order in parallel in the length direction are formed alternately. The three-dimensional network according to claim 1, which is a pleated three-dimensional network. 3. The three-dimensional net-like body according to claim 2, wherein the ridge portion continuous in the length direction and the easy-folding band are orthogonal to each other. 4. A three-dimensional net-like body according to claim 1, wherein the continuous filament is a three-dimensional net-like pair reinforced with a flexible net, which is tangled with a flexible net. . 5. The three-dimensional net according to any one of claims 1 to 4, wherein a nonwoven fabric is bonded to a surface on which the surface of the easily bendable band forms the surface. 6. A mold having a trapezoidal cross section whose cross section is formed by slightly cutting and removing a vertex of a triangle, wherein the plurality of blocks are arranged on a plane, and the upper sides and the bottom surfaces of the plurality of blocks are each on the same plane. While moving the mold at a constant speed, a thickness of 0.1 to 1.5 made of a thermoplastic synthetic resin.
mm continuous filaments are spun out, continuous filaments are superimposed in a mesh along the mold, and are fused and bonded at their intersections to form a mat-like pleated mesh forming a large void. The thickness is 4-50m
In order to manufacture a three-dimensional net of m, a press roll for pressing the mold is mounted at a position where the continuous filament is insufficiently solidified, and the entire width is set at any interval in the length direction of the mold. 0.3 to 2 mm thick and 3 to 3 width
Using a mold having a metal bar of 20 mm, the continuous filament laminated on the metal bar is pressure-bonded between the pressure roll and the metal bar at an arbitrary interval as described above, and is easily folded into a flat band shape. A method for producing a three-dimensional network, comprising producing a three-dimensional network while forming a part. 7. The mold, wherein one surface of the triangular prism is on a plane,
The upper part of the ridgeline where the triangular prism is not on the plane is cut and removed in parallel on the plane, and the triangular prism is a mold having a shape in which the triangular prism is arranged regularly at regular intervals in the length direction. The method for producing a three-dimensional network according to claim 6.