Application Field Of Biodegradation
In the field of food packaging, shopping bags, meal boxes, and beverage bottles made from biodegradable particles have passed the FDA food safety certification.
In the field of industrial packaging, cushioning materials, trays, and wrapping films made from biodegradable particles have comparable protective properties to traditional plastics, and can achieve “use and degrade” without the need for recycling.
In the field of agriculture, agricultural film made from biodegradable particles can accurately control the degradation time according to the crop growth cycle, and can provide insulation, moisture retention, and pest control effects.
In the medical field, biodegradable particles are widely used in surgical sutures, medical dressings, drug sustained-release carriers, and other products due to their good biocompatibility.
Types Of Biodegradable Plastics
PLA: Disposable tableware, food packaging, thermoformed products, 3D printing filaments
PBAT/PLA + mineral powder or starch modified blended pellets: shopping bags, garbage bags, agricultural mulch films
PBS: Heat-resistant drink straw, thermoformed
PGA: Medical consumables such as surgical sutures and tissue engineering scaffolds
Additionally, there are PHA, PCL, and others.
Selection Of Extruder
The equipment for biodegradable particles varies depending on the formula. Appropriate machines can help improve yield and particle quality.
- PLA PBS: twin screw extruder (L/D 44~48:1) + water strand pelleting system
- PBAT+starch/mineral powder: high-speed mixer + twin-screw extruder (L/D 48~52:1) + Air cooling strand pelleting system
When the “plastic restriction order” changes from an initiative to a rigid policy, biodegradation is the perfect substitute for traditional plastics and has become the core proposition of the future of the earth.