Plastic Mine Grid 1.Strong anti-corrosion,anti-aging 2.Good flam-retardant performance

Plastic Mine Grid

Product Introduction

The Plastic Mine Grid is a kind of double-resistant plastic network develops independently by our company. The product is convenient to operate with the advantage of low cost and beautiful outlook. The main characteristic is that it is not easy to static friction and has good flam retardancy, anti-corrosion and it is convenient in the construction and transport, to facilitate coal washing the good carrying capacity in vertical horizontal.

Product Feature

The main raw material is polypropylene, it from the overall structure of the grid network with the bi-oriented approach after processing through flame-retardant, anti-static of the overall structure if the grid network.

Attrition is not easy to cause static friction. In the coal mine environment, the average resistance net surface is below 1×109Ω.Good flam-retardant performance. It can only melt but not burn in the fire environment even if the fire burning far away from the fire 10seconds at most, it will be out.It can facilitate coal washing. The density of plastic net is about 0.92, less than the density of water. The broken mesh floats on the surface of water in the coal washing process. It can be washed off easily.Strong anti-corrosion, anti-aging.Facilitate the construction and transportation. The plastic network is relatively soft so that it is easy to scratch workers in the construction. And also it is easy to curl, tailoring, and has the advantages of light weight and therefore it is easy to underground transport, carry and construction.Have strong carrying capacity in vertical and horizontal direction. After extrusion and stretching process, the molecular structure if plastic network is re-orientated. The tensile strength if the material if 2-3 times than before. The formation if two-way stretch tendons and rib each other vertically, this structure enables the surface to exert pressure on the network node through effective transfer to the four rubbed tendons, thus greatly enhance the network capacity to face the overall pressure, when an external force is imposed to a certain tendons(or fib),external uniform will also be distributed to other bars (or ribs) in the lower concentration fir a single cut-off ability, which is not easy rib fracture caused by gluten, as a result if this network us a two-way stretch plastic rather than woven, the small mesh creep and uniform mesh size can effectively prevent the falling pieces if coat to protect the safety of mine works and mine car’s running.

Application Range

The product is mainly used at the time of protection fir the exploitation if coal mind and also can be used as anchor of roadway, roadway support, and anchor spray roadway and other material support. When used in the fake tope, be sure to use double-deck joint above.

Technical Parameter

Item	SG20-20	SG25-25	SG30-30	SG40-40
Vertical tensile strength kN/m	20	25	30	40
Horizontal tensile strength kN/m	20	25	30	40
Vertical elongation strength %	15
Horizontal elongation strength %	13
Vertical stretching force at 2% elongation kN/m	7	9	10.5		14
Horizontal stretching force at 2% elongation kN/m	7	9	10.5		14
Vertical stretching force at 5% elongation kN/m	14	17	21		28
Horizontal stretching force at 5% elongation kN/m	14	17	21		28

Flame retardancy and antistatic property

Item	SG20-20	SG25-25	SG30-30	SG40-40	SG20-20	SG25-25	SG30-30	SG40-40
Average of alcohol blast burner flaming combustion time S≤	3				3
Max of alcohol blast burner flaming combustion time S≤	10				10
Average of alcohol blast burner flameless combustion time S≤	10				10
Max of alcohol blast burner flameless combustion time S≤	30				30
Average of alcohol burner flaming combustion time S≤	6				6
Max of alcohol burner flaming combustion time S≤	12				12
Average of alcohol burner flameless combustion time S≤	10				20
Max of alcohol burner flameless combustion time S≤	30				60
Average of surface resistance Ω≤	1.0 × 109				3.0 × 108
Standard	MT 141-2005				MT 113-1995

Plastic Mine Grid