Polypropylene ecological bags

Eco-friendly Bag

Define Concepts

Bags made from double-sided needle-punched nonwoven fabric, which is processed from raw materials such as polypropylene (PP) or polyester fiber (PET). These bags undergo strict selection for indicators such as thickness, unit weight, physical and mechanical properties, appearance, fiber type, load-bearing method, direction, geometric dimensions, and water permeability, as well as equivalent pore size for plant growth. They feature UV resistance, aging resistance, non-toxicity, non-flammability, and the characteristic of not spreading cracks, truly achieving zero pollution. Mainly used for constructing flexible ecological slopes. The ecological bag slope protection greening is one of the important construction methods for the restoration of barren mountains and mines, highway slope greening, riverbank protection, and riverway rehabilitation.

Eco-bags feature excellent physical and chemical properties. This specially formulated material is resistant to UV degradation, unaffected by chemicals in the soil, and does not undergo quality change or rot. It is non-degradable, resistant to pest infestation, anti-aging, non-toxic, and resistant to erosion from acids, alkalis, salts, and microbial decomposition. It allows water passage but not soil, being friendly to plants and suitable for vegetation greening.

Feature Specifications

Moisture-resistant

Eco-bags are moisture-resistant, preventing damage to the bag upon exposure to moisture, without deformation. They are also non-soluble in polluted liquids (EPA Method 9090).

Anti-biodegradable and animal-resistant

Eco-bags are made from a special formula material that does 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 become 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 black 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)

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

A. 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 can cause the slope to collapse.

Advantages and Features

In slope engineering, this new material can completely replace stone and cement, significantly reducing construction costs. The treated slope surface is capable of being vegetated, achieving a greening effect on the excavation area and forming a natural ecological slope. It has a filtering function that allows water to permeate but not soil, resulting in a highly permeable slope. This slope offers strong protection and stability against soil erosion, local mud (and) rock flows, and slope collapses, making it a highly stable and natural slope.

Application Fields

Ecological Restoration

River Banks: A natural riparian environment where humans and wildlife coexist

2. Mining Land Reafforestation: Comprehensive utilization of mine gangue, scientific treatment of subsidence areas, afforestation of barren mountains, purification of air and water, pioneering the ecological restoration of mines, and the new era of barren mountain greening.

3. Beachfront, landslip 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 slopes, applicable to excavation and embankment slopes.

2. River and Lake Slope Protection: Suitable for river, lake, and reservoir banks.

3. Special Applications: Military installations, flood emergency responses, shelters, flood embankments, etc.

Landscape Gardening and Residential

Vertical Greening, Landscape Art

2. Commercial Residential Community

3. Rooftop garden landscaping.

Specs & Parameters

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

Fabric weight range: Broad range, 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-bag

Height = 0.4 x Eco Bag Height

For example, a bag with an outer diameter specification of 810mm x 430mm will measure approximately 65cm in length, 30cm in width, and 15cm in height after filled with soil (The specifications of the eco-bags and their shaped dimensions after filling with soil can be designed according to actual requirements. Allowable deviation: ±2%).

Manufacturing Requirements

Under comprehensive consideration of the requirements from disciplines such as materials mechanics, hydraulics, biology, and botany, stringent selection has been made for the thickness, unit mass, physical and mechanical properties, shape, fiber type, loading method, direction, geometric dimensions, and permeability of the ecological bags, as well as the equivalent aperture to meet plant growth. They feature UV resistance, aging resistance, non-toxicity, non-flammability, and non-spreading of cracks, truly achieving zero pollution.

The eco-bags feature targeted water-permeable and soil-impermeable filtration, preventing the loss of fillings (a mixture of soil and nutrients) while allowing normal water exchange within the soil. This effectively preserves and promptly replenishes the water required for plant growth, being very friendly to plants and enabling them to grow freely through the bags. The root systems penetrate into the engineering foundation soil, akin to countless anchor rods reinforcing the stability between the bags and the main structure. Over time, this becomes increasingly firm, further achieving the purposes of construction stability and slope stabilization, significantly reducing maintenance costs.

Eco-bags with special functional requirements, where the design of their functional features is a must for the stability of flexible slope structures.

Illustrate with equivalent aperture example:

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

A. Bagged materials can suffer 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, thereby damaging the mechanical structure.

B. Bagged materials are prone to significant loss when washed away, with settling depths far exceeding their natural settling limits, which does not match the original design, leading to collapse.

Two: Too small aperture (bag body material too thick)

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 load-bearing structure values to rise, leading to structural deformation and collapse.

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