Eco Bags

Eco Bag

Define Concepts

Bags made from double-sided needle-punched nonwoven fabric, which is processed from raw materials of polypropylene (PP) or polyester fiber (PET). These bags undergo rigorous selection for their thickness, unit weight, physical and mechanical properties, appearance, fiber type, load-bearing method, direction, geometric dimensions, and water permeability, as well as equivalent aperture to meet plant growth requirements. They feature UV resistance, aging resistance, non-toxicity, non-flammability, and non-spreading tears, truly achieving zero pollution. Mainly used for constructing flexible ecological slopes. Ecological bag slope protection greening is one of the important construction methods for mountainous area restoration, mine reclamation, expressway slope greening, riverbank slope protection, and inland river regulation.

Eco-bags boast excellent physical and chemical properties. This specially formulated material can withstand UV degradation, is unaffected by chemicals in the soil, and does not undergo quality deterioration or rot. It is non-degradable, resistant to pests, anti-aging, non-toxic, and can withstand erosion from acids, alkalis, salts, and microbial decomposition. It allows water to pass through but not soil, being plant-friendly and suitable for vegetation greening.

Feature Characteristics

Moisture-resistant

Eco-bags are moisture-resistant, ensuring that water presence does not damage the bag or cause deformation. They are also non-soluble in contaminated liquids (EPA Method 9090).

Anti-biodegradable and animal-resistant

Eco-bags are made from special formula materials that do not support, absorb, or aid in the growth of fungi. They do not rot, mold, or deteriorate. Eco-bags are not digestible by insects or related animals and will not serve as food for rodents, termites, woodworms, beetles, silverfish moths, and the like.

Anti-ultraviolet high polymer

Eco-bags can withstand high temperatures of up to 150 degrees Celsius without melting and can endure low temperatures down to -40 degrees Celsius.

Ultraviolet (UV) Protection

Eco-bags contain carbon ink and other UV-resistant ingredients.

Here, we illustrate with an example using the equivalent aperture:

One: Hole diameter too large (bag body, material too thin)

Two: Aperture too small (material of bag body too thick)

It hinders the growth of vegetation and the extension of root systems, severely affecting the structural stability of flexible slopes.

C. The increased hydrostatic pressure along the slope due to this will cause the slope to collapse.

Advantages and Features

In slope engineering, this new material can completely replace stone, cement, and other materials, significantly reducing engineering costs. The post-construction slope features a surface suitable for vegetation coverage, achieving绿化 effects on the excavated slope, forming a natural ecological slope. It has a filtering function that allows water to pass through but not soil, resulting in a highly permeable slope. This slope provides strong protection and stability against soil erosion, local mudslides, and slope failures, making it a highly stable and natural slope.

Application Fields

Ecological Restoration

Riverbanks: Natural riparian environments where humans and wildlife coexist

2. Mine Reafforestation: Comprehensive utilization of mine gangue, scientific remediation of subsidence areas, greening barren mountains, purifying air and water, pioneering the ecological restoration of mines, and ushering in a new era of barren mountain greening.

3. Beachfront and lake shore, landslide control, culvert inlets, drainage ditches, soil erosion, irrigation systems, etc.

4. Artificial Wetlands: Ecological Restoration

Roof Greening

Infrastructure

Roadside Slope Protection: Suitable for railway and highway embankments, applicable to cut and fill slopes.

2. River and Lake Bank Protection: Suitable for river, lake, and reservoir slopes.

3. Special Applications: Military facilities, flood emergency response, shelters, flood embankments, etc.

Landscape gardening and residential

Vertical Greening, Landscape Art

2. Commercial residential community

3. Rooftop garden greening.

Specs and Parameters

Flat Size Range: (Customizable according to design and engineering requirements)

Fabric weight range: Varies widely, commonly including 100g, 125g, 150g, etc.

Fabric Tensile Strength: ≥4.5 kN/m

Fabric elongation at break: ≥40%

Volume calculation formula for soil in eco-bags after shaping:

Length = Eco Bag length - (12~15) cm.

Width = 0.7 times the width of the eco-bags

Height = 0.4 x Eco Bag Height

For example, a bag with an outer diameter specification of 810mm x 430mm will be approximately 65cm in length, 30cm in width, and 15cm in height after filled with soil (The specifications of the ecological bags and their shapes after filled with soil can be designed according to actual requirements. A tolerance of ±2% is allowed.)

Manufacturing Requirements

With thorough consideration of the requirements from various disciplines such as materials mechanics, hydraulics, biology, and botany, strict selection has been made on the thickness, unit weight, physical and mechanical properties, shape, fiber type, load-bearing method, direction, geometric dimensions, and permeability of the ecological bags, as well as equivalent pore size to meet plant growth. They feature UV resistance, aging resistance, non-toxicity, non-flammability, and the absence of crack extension, truly achieving zero pollution.

The eco-bags feature targeted water-permeable and soil-impermeable filtration, preventing the loss of filling materials (a mixture of soil and nutrients) while allowing normal water exchange within the soil. This effectively maintains and promptly replenishes the water required for plant growth, being highly friendly to plants, enabling them to grow freely through the bags. The root systems penetrate into the engineered base soil, like countless anchor rods reinforcing the stability between the bags and the main structure. Over time, this reinforcement becomes even stronger, further achieving the stability and slope erosion control objectives, significantly reducing maintenance costs.

Eco-bags with specific functional requirements, where the design of flexible slope structure stability is a must-have condition.

Illustrate with equivalent aperture examples:

One: Hole diameter too large (bag body, material too thin)

A. Bagged goods can experience significant loss due to rainfall or running water, resulting in a substantial decrease in unit weight and a dramatic change in the mechanical design values, leading to the destruction of the mechanical structure.

B. Bagged materials are prone to significant loss under water flushing, with settlement depths greatly exceeding their natural settlement, not matching the original design, leading to collapse.

Too small aperture (too thick bag material)

A. It hinders the growth of vegetation and the extension of root systems, severely affecting the structural stability of flexible slopes.

B. Under certain specifications, the weight of the contents within the bag is a fixed value during the design of the flexible slope mechanical structure. The small aperture reduces its water permeability. When a large amount of moisture seeps in, its unit weight significantly increases, causing the original stress structure values to rise and leading to structural deformation and collapse.

C. The increased hydrostatic pressure on the slope due to this will cause the slope to collapse.