JP2007120272A - Synthetic resin three-dimensional net-like drain material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of breaking and rupture by the expansion-contraction and bending in construction of a synthetic resin three-dimensional net-like drain pipe arranged on its road side and collecting and draining rainfall water in water permeable pavement of asphalt. <P>SOLUTION: The synthetic resin three-dimensional net-like pipe of the drain pipe is constructed in the water permeable pavement of the asphalt. In manufacture, this drain material for stabilizing its dimension and freely bendable in the vertical direction, is formed as a countermeasure for preventing the expansion-contraction and rupture by integrally molding two straight line-shaped synthetic resin strips having the thickness of 1.5 times to 5 times a wire diameter of its constituting net-like body on its right and left as a rib. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

Technology field

  The present invention relates to an improvement to breakage caused by tension during construction of drainage pavement and provision of drainage material that does not break even if it is freely bent in one direction, by a three-dimensional network drainage material in which synthetic resin linear forms are intertwined and fused. .

  On ordinary roads paved with asphalt, the road surface is impermeable when it rains, causing problems such as traffic obstruction due to stagnant water and scattering of stagnant water due to running of cars. In recent years, a so-called drainage pavement has been constructed at major road intersections, highways, and the like for this problem. This is a mixture of 2 to 3 cm diameter single-grained crushed stone and asphalt and then paved to a thickness of 3 to 10 cm on the upper layer of the road concrete base. Water is introduced to both sides of the roadbed, and the drainage material of the present application is installed on the roadside in the direction of road extension, and the rainwater is drained from the drainage material provided at appropriate intervals. In the drainage material of the present application, Japanese Patent Application Laid-Open No. 2005-105796, etc., there are many types of thicknesses, wire diameters, etc. corresponding to the construction in consideration of the precipitation amount depending on the thickness of the drainage pavement and the road width. .

  This kind of drainage material includes metal spiral pipes, plastic perforated pipes, braided pipes, plastic three-dimensional reticulated pipes (this application), etc., each has advantages and disadvantages, and plastic three-dimensional reticulated pipes are strongly pulled during construction There are problems such as breaking and breaking, or bending and breaking when strongly bent.

  In the synthetic resin wire solid network drainage material, Japanese Patent Application Laid-Open No. 2005-105796, etc., in order to solve the problem of elongation or breakage due to tension during construction, or breakage when broken slightly, Three-dimensional by a special extrusion molding method (generally, when the nozzle hole diameter is increased, the synthetic resin is extruded from the larger diameter and the smaller diameter is not extruded). The small diameter of the three-dimensional net-like melted wire rod is accumulated in a skull shape by increasing the extrusion speed, and the two left and right large-diameter linear melt wire rods to be added are extruded at a low speed to be integrally formed. As a result, dimensional stability without expansion and contraction is imparted by the linear melted wire rod added as the bone of the three-dimensional network, and stable construction can be performed by the drainage material of the present application by being bent corresponding to the unevenness of the roadbed during construction. .

Embodiment of the Invention

  The molten synthetic resin is extruded from a die (1) provided with nozzles having a pore size and a large pore size, the molten resin is naturally lowered, and the molten resin is drawn into the cooling water by a take-up roll (6) slower than the descending speed. It is bent into a skull shape and molded into a three-dimensional network. The outer diameter is set to 5 and the inner diameter is set to 3 with a restriction rod. Expansion and breakage of this three-dimensional network is prevented by the large-diameter bone of (7).

  Draw roll that takes the drainage material of this application that is integrated with the straight line of the wire rod that is bent by dropping the molten wire rod extruded from the die into the cooling water and taking it slower than the extrusion speed, and the straight line of the thick extrusion wire rod for dimensional stability. Take it into cooling water and solidify it.   Drainage material integrated with thin wire rod and thick wire rod of this application.   The bent state of the drainage material of the present application is shown.

Explanation of symbols

[Figure 1]
1. 1. Melt extrusion die 2. Molten plastic wire rod 3. Rod that regulates inner diameter 4. Cooling water Outer diameter regulating pipe 6. Take-up roll 7. Additive melting line [Fig. 2]
8). Product drainage (Fig. 3)
9. Product bending state

Claims (1)

  Asphalt water-permeable pavement drainage material consisting of three-dimensional three-dimensional network pipes in which melted synthetic resin wires are intertwined and fused together to obtain a drainage material that is easy to bend and that is dimensionally stable without any expansion or contraction during construction. Therefore, a drainage material obtained by adding and welding a linear molten iron 1.5 to 5 times larger than the wire diameter of the reticulated body during molding.

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