Ecological bags are a new type of material in slope engineering, made of double-sided ironed needle punched non-woven fabric processed from polypropylene (PP) or polyester fiber (PET) as raw materials. The thickness, unit weight, physical and mechanical properties, shape, fiber type, stress mode, direction, geometric size, water permeability and equivalent pore size to meet plant growth of the anti ultraviolet ecological bag are strictly screened. It has the characteristics of anti ultraviolet (UV), anti-aging, non-toxic, non combustion supporting, and non extension of the crack, which truly realizes zero pollution. Mainly used for constructing flexible ecological slopes.

Characteristics of anti purple polymer ecological bag

Moisture resistance

The raw materials of ecological bags do not absorb moisture, and when moisture appears, it will not damage the bag. The bag will not deform and is insoluble in contaminated liquids (EPA Method 9090, US Environmental Protection Agency).

Chemical corrosion resistance (pH)

Extensive research and testing have shown that ecological bags have strong resistance to certain concentrations of acidic and alkaline chemicals, and can be used in the vast majority of solid and heavily polluted areas.

Anti biodegradation and animal destruction

Ecological bags use special formula materials that do not support, absorb, or aid in the growth of fungi, and do not rot, mold, or spoil. Ecological bags will not be digested by insects and related animals, and will not become food for gnawing animals (mice), termites, moths, beetles, silverfish moths, etc.

UV resistant polymer

Ecological bags can withstand temperatures of up to 150 degrees Celsius without melting, and can withstand temperatures as low as -40 degrees Celsius.

UV resistance

The ecological bag contains carbon ink and other UV resistant ingredients.

Here, equivalent aperture is used as evidence to illustrate:

1、 The aperture is too large (bag body, material too thin)

2、 The aperture is too small (the bag material is too thick)

A. It will hinder vegetation growth and root extension, seriously affecting the structural stability of flexible slopes

C. The increase in static water pressure on the slope will cause the slope to collapse

Advantages and Characteristics

In slope engineering, this new type of material can completely replace materials such as stone and cement, greatly reducing project costs. The slope after construction has a surface that can be covered by vegetation, achieving a green effect on the excavated slope and forming a natural ecological slope. It has a filtering function that is permeable to water and impermeable to soil. The slope formed in this way has high permeability and strong protection and stability against soil erosion, local mud (soil) and stone flow, slope collapse, etc. It can become a permanent high stability natural slope.

application area 

Ecological restoration

1. On both sides of the river: a natural shoreline environment where humans and wildlife coexist

2. Mine greening: Comprehensive utilization of mineral gangue, scientific remediation of subsidence areas, greening of barren mountains, purification of water and gas, opening up a new era of ecological restoration of mines and greening of barren mountains.

3. Management of coastal areas, surface landslides, culvert openings, drainage ditches, soil erosion, irrigation systems, etc.

4. Artificial wetlands: ecological restoration

5. Roof greening

Infrastructure construction

1. Road slope protection: Railway and highway slope protection, suitable for excavation slopes and fill slopes.

2. River and lake slope protection: suitable for slopes of rivers, lakes, and reservoirs.

3. Special applications: military facilities and emergency flood control, shelters, flood control embankments, etc.

Landscape greening and residential buildings

1. Vertical greening and garden art;

2. Commercial residential communities;

3. Roof garden style greening.

3 specification parameters

Design specifications and parameters

Plane size range: (can be customized according to design and engineering needs)

Fabric weight range: a wide range, commonly including 100g 125g 150g, etc

Fabric tensile strength: ≥ 4.5kN/m

Fabric fracture elongation: ≥ 40%

The formula for calculating the volume of soil formed in ecological bags is:

Length=length of ecological bag - (12~15) cm,

Width=width of ecological bag * 0.7

Height=height of ecological bag * 0.4

For example, a bag with an outer diameter specification of 810mm * 430mm, after being filled with soil, has approximately a length of 65cm, a width of 30cm, and a height of 15cm (the specifications of the ecological bag and the formed specifications after being filled with soil can be designed according to actual requirements. The maximum allowable deviation is 2%)

Technical indicators reference

At present, there are no national or industry standards for ecological bags in China. The technical parameters refer to the national standard GB/T 17639-2008 for long filament spunbond needle punched nonwoven geotextiles of the People's Republic of China.

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