The wide application of mulch film technology has brought enormous economic benefits while at the same time leading to severe soil pollution.
The amount of residual film is increasing year by year and the pollution is becoming more and more serious. Two ideal ways to solve “White Pollution” problems are using 100% biodegradable film and easily-recycled film with high strength.
| Dosage of film (kg/mu) | Cost of film(yuan/mu) | Mechanized recycle cost(yuan/mu) | Cost of labor to collect film(yuan/mu) | Total cost(yuan/mu) | Recycle rate(%) |
Biodegradable film | 7.5 | 180 |
|
| 180 | 100% degradable |
Recyclable film with high strength | 5.5 | 90 | 30 | 50 | 170 | >95% |
Common film | 5.5 | 66 | 30 | 50-100 | 146-196 | <60% |
1. Biodegradable film
The degradation time can be adjusted to a controllable range according to the growth cycle of crops.
It is beneficial to green, ecological and sustainable development as the abandoned films will degrade to CO2, H2O and small organic molecules.
Production process of biodegradable film
The mulch film paving conditions in Gansu and Xinjiang Production and Construction Group in last three years
2. Weather-proof film
With characteristics of high strength, good weather-proof and can be recycled by machines
Recovered film after crop can be processed and turned into functional construction materials like floor tiles and wooden decorationsmaterials.
Production process of weather-proof film
Experiment of paving biodegradable films
