JPS639613Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a vegetation net that is applied to fields such as soil retention and slope reinforcement in greening work.

(b) Conventional technologies and their problems A wide variety of greening methods have been proposed in the past.
Although various efforts have been made in response to changes in the natural environment, the most commonly used greening method in terms of ease of construction and economy is a method that uses a combination of netting and seed spraying. However, the mesh used in the above construction method is metal green strips,
It is a flat net made of natural fibers, high-density filaments, etc., and is fixed to the ground using pins, anchors, etc. during installation work, but it can be used on uneven surfaces of the ground. In addition, such net-like bodies have poor bulk and do not retain soil well, and after seed spraying, due to changes in the natural environment and weather conditions, the seeds may germinate and root.
However, it has the disadvantage that it is prone to slipping or running off before it takes root, and if slipping or running off occurs, complicated re-construction is required.Therefore, there is a strong demand for improvements to the reticulation system for greening work. was.

(c) Purpose of the invention The present invention was made in response to the above-mentioned demands, and is a three-dimensional bulky structure with excellent soil retention, adaptability to uneven ground surfaces, and extremely high porosity. The present invention provides a net-like body suitable for use as a vegetation with sexual characteristics.

(d) Structure of the invention The net structure for vegetation according to the invention is shown in Figures 1 and 2.
As the structure is illustrated in the figure, coarse wire mesh 1
and a large number of continuous filaments 2, 2 made of thermoplastic synthetic polymer with a diameter of 0.1 to 1.5 m/m, and the continuous filaments 2, 2 form irregular loops 3, 2 in the mesh space of the wire mesh 1.
3, and both 1 and 2 are intertwined and integrated.

Apparent thickness T of the net-like body according to the present invention described above
is preferably about 10 to 100 m/m, and the wire mesh 1
Although general-purpose wire meshes such as hexagonal wire meshes and diamond-shaped wire meshes can be used satisfactorily, coarse wire meshes with a mesh area of about 10 to 100 cm ² are particularly suitable. Furthermore, the amount of intertwining of the continuous filaments 2 of the thermoplastic synthetic polymer with the wire mesh 1 is determined by conditions such as the slope of the construction site, soil quality, and spraying materials, but generally speaking, 50~1000g/ ^m2 ,
It is preferably 100 to 600 g/m ² , and it is important that it has enough voids for the sprayed material to pass through.

The vegetation net according to the present invention, that is, the three-dimensional net in which a large number of continuous synthetic resin filaments 2 bulge out in irregular loops 3 in the mesh portion of a wire mesh 1 is schematically shown in FIG. 3, for example. A thermoplastic synthetic polymer is spun in a molten state as a connected filament 2 from a spinneret 4 in which spinning holes with a hole diameter of 0.2 to 1.8 m/m are arranged in rows at intervals. A conveyor 5 that moves at a speed lower than the falling speed of the continuous wire group 2 that has been taken out is arranged, and a wire mesh 1 is deployed 10 to 100 m/m above the top surface of the conveyor 5 and moved together with the conveyor 5, It can be obtained continuously and efficiently by allowing the group of continuous filaments to fall naturally onto the developed wire mesh 1 in an unsolidified state. Preferably, if the spinneret 4 is slightly traversed in the width direction of the conveyor 5, the continuous filaments that have fallen onto the wire mesh 1 will intersect and the intersections will self-weld, forming irregular loops 3.
becomes an irregular network. Furthermore, the above conveyor 5
move it forward while swinging it back and forth, or while the continuous strings 2 hanging down on the wire mesh 1 have not solidified yet, cut the continuous strings straddling the wire mesh 1 with appropriate nippers. By pinching from both sides in spots, a part of the continuous filament group can be fused 6 below the wire mesh 1 as shown in FIG. 4, thereby making the wire mesh and the continuous filament stronger. can be integrated into.

(E) Example At a position 50 m/m above the conveyor 5 of the manufacturing equipment shown schematically in FIG.
The tortoise shell wire mesh 1 is expanded and held, and the hole diameter is 0.6 m/m.
Polypropylene is melt-spun using a spinneret 4 in which a large number of spinning holes are arranged at intervals in the width direction of a conveyor 5, and is allowed to fall naturally. The apparent thickness of the loop 3 that bulges out from the mesh is approx.
A composite network with an apparent porosity of approximately 96% was manufactured at 50m/m, and the composite network thus obtained was continuously placed on a slope with an inclination angle of approximately 55° and mixed with sand and fine soil. After expanding the linear body 1 with the bulging surface as the back side and fixing it with an arbitrary anchor pin, a mixed material consisting of seeds, soil, and fertilizer was sprayed on the stretched surface of the composite net-like body. The mixed material was effectively bonded and deposited on the slope from the voids in the composite net, and furthermore, the spaces in the composite net were filled to form a layer of the mixed material on the slope. The two layers of mixed materials are held together by the composite net and withstand changes in weather conditions, hardly ever slipping off, allowing seeds to germinate, take root, and take root smoothly, making it possible to construct green slopes. achieved. On the other hand, it has not been possible to form a desired mixed material layer on a similar slope by only stretching the wire mesh and spraying the mixed material.

(f) Effects of the invention As detailed above, the vegetation net according to the invention consists of a coarse wire mesh 1 and a large number of continuous filaments 2 made of thermoplastic synthetic polymer with a diameter of 0.1 to 1.5 m/m, The continuous filaments 2 are suspended in irregular loops 3 in the mesh space of the wire mesh 1, and the two are intertwined and integrated. Since the majority of No. 2 bulges out in the direction to prevent the earth and sand from sliding down, there is no concern about tensile strength, and it has excellent conformability to the ground and ability to hold the sprayed material. Furthermore, since it is flexible and the continuous filaments are highly elastic, it can withstand severe construction conditions and, as mentioned above, is particularly effective for greening slopes with large inclination angles.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and
Fig. 1 is a partial perspective view, Fig. 2 is a partial cross-sectional view in the thickness direction, Fig. 3 is a simplified side view of the manufacturing device, and Fig. 4 is a partial cross-sectional view in the thickness direction of the bonded mesh body. It is. 1 is a wire mesh, 2 is a synthetic polymer continuous filament, and 3 is an irregular loop.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of a coarse wire mesh and a large number of continuous filaments of thermoplastic synthetic polymer having a diameter of 0.1 to 1.5 m/m, the continuous filaments are irregular loops in the mesh space of the wire mesh. A net-like structure for vegetation that hangs down and is intertwined and integrated. 2 The size of the mesh part of the above coarse wire mesh is 10 to 100.
cm ² . The net-like body for vegetation according to claim 1, which is registered as a utility model. 3 The amount of continuous filaments in the thermoplastic synthetic polymer is
The net-like body for vegetation according to claim 1, which has a weight of 100 to 600 g/m ² .