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What are biodegradable mulch films, and how do manufacturers produce them compared to traditional plastic mulch fi
Biodegradable mulch films are eco-friendly agricultural films designed to perform the same functions as conventional polyethylene mulch films—such as controlling weeds, conserving soil moisture, and improving crop yield—but with the added benefit of decomposing naturally after use. These films are typically made from biopolymers like polylactic acid (PLA), polyhydroxyalkanoates (PHA), or starch-based blends that can break down into water, carbon dioxide, and biomass through microbial activity in the soil.
Manufacturers of biodegradable mulch films use advanced extrusion processes similar to those used in plastic film production but adapt them for biodegradable resins, which have different thermal and mechanical properties. The manufacturing process involves melting and blending biodegradable polymers with additives that enhance flexibility, UV resistance, and degradation rate. After being extruded and cooled, the films are wound into rolls for agricultural use.
Compared to traditional polyethylene mulch films, biodegradable ones eliminate the need for costly removal and disposal at the end of the season. This not only reduces plastic waste accumulation in farmlands but also lowers labor and disposal costs. Leading biodegradable mulch film manufacturers and plant producers continue to innovate to improve the films’ strength, color options (such as red or black for specific crop benefits), and biodegradation consistency in various climates.
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