New Trends in Green Packaging: PLA Biodegradable Films and Gravimetric Dosing Systems Lead Efficient and Environmentally Friendly Manufacturing
PLA is mainly made from natural sources of lactic acid, which has good biodegradability and compatibility, and is considered the most promising green packaging material.
After being discarded, polylactic acid (PLA) products can be completely decomposed into carbon dioxide and water under natural conditions, which can be biologically absorbed and have no pollution to the environment. At the same time, PLA also has good transparency, anti mold and antibacterial properties.
1. Transparency
PLA film has good transparency and glossiness, and its excellent performance is comparable to that of glass paper and PET, which is not found in other degradable plastics.
This film has the same heat and impact resistance as petroleum based films, while also possessing excellent elasticity and transparency.
2. Barrier properties
PLA can be used to produce thin film products with high transparency, good barrier properties, excellent processability, and mechanical properties, which can be used for flexible packaging of fruits and vegetables. It can create a suitable storage environment for fruits and vegetables, maintain their life activities, delay aging, and maintain their color, aroma, taste, and appearance.
3. Antibacterial activity
PLA can create a weakly acidic environment on the surface of the product, with antibacterial and anti mold foundations. If used in conjunction with other antibacterial agents, it can achieve an antibacterial rate of over 90% and can be used for product antibacterial packaging.
The green transformation of plastic packaging manufacturing is achieved through the combination of gravimetric dosing systems and biodegradable materials!
In the production process of packaging films using biodegradable materials such as PLA, due to the insufficient heat resistance, poor oxygen resistance, and fragility of PLA itself, plastic packaging is not resistant to high temperatures, has low preservation performance, is prone to breakage, and is not sturdy. In order to enhance the performance of PLA packaging film, it may be necessary to use various raw materials and additives to improve the heat resistance and mechanical properties of the film.
In the early stages of production and manufacturing, when mixing multiple raw materials, gravimetric dosing systems is used for raw material proportioning. The accuracy error of the proportioning is controlled within 0.05%, which can save 15% of raw material waste and improve the proportioning speed by 30% compared to the original manual batching.
The gravimetric batch blender has over 50 sets of formula storage functions. When in use, a graded management password can be set to keep the formula confidential. In the later stage, it can support the output of statistical raw material usage data.
Accuracy improvement: By using weighing technology, precise weight measurement of raw materials can be achieved, ensuring that the ingredients in each formula reach precise proportions and improving product quality consistency.
Reduce waste, improve raw material utilization, and lower production costs. Realize fully automated raw material batching process, improve production efficiency, and shorten production cycle.
