What innovative technologies are there in the production process of Biodegradable Film & Bag?

In the production process of Biodegradable Film & Bag, there are many innovative technologies that not only improve the performance of the product, but also enhance its environmental characteristics. The following are some of the main innovative technical points, which are summarized and explained in combination with the relevant information in the reference article:
1. Material innovation
Application of polylactic acid (PLA): As an important bio-based material, polylactic acid has been widely used in the production of biodegradable films and bags. PLA is derived from renewable resources (such as corn starch), has  biodegradability, and can be completely decomposed by microorganisms in the natural environment, thereby reducing environmental pollution.
Blending of biodegradable polymer resins: By mixing polylactic acid with other biodegradable polymer resins (such as biodegradable aliphatic polyester resins) in a certain proportion, a film material with better physical properties and degradation properties can be prepared. For example, some patents mention that polylactic acid accounts for 5%-50% of the weight of the mixture. This mixing method can improve the strength and toughness of the film.
2. Production process innovation
Multi-layer co-extrusion technology: The multi-layer co-extrusion technology is used to produce biodegradable films. Materials with different functions can be introduced between different layers to meet specific performance requirements. For example, inert particles are added to a certain layer of the film to improve its heat resistance and wet/heat durability, or specific components are added to the heat sealing layer to improve the heat sealing strength.
Film physical property adjustment: By adjusting the physical parameters of the film such as F2 value (longitudinal tensile strength) and F2 value/F1 value (longitudinal to transverse tensile strength ratio), the mechanical properties and processing properties of the film can be significantly improved. For example, some patents mention adjusting the F2 value to 30-55MPa and setting the F2 value/F1 value ratio to ≤170% to obtain ideal film performance.
Welding and sealing technology: In the production process of biodegradable bags, welding and sealing technology is crucial. The use of advanced welding and sealing equipment can ensure that the bag has sufficient strength and sealing at the seal to prevent leakage of the contents. At the same time, by optimizing welding parameters (such as temperature, time and pressure), the welding quality and production efficiency can be further improved.
3. Environmental protection and sustainable innovation
Use of fully biodegradable materials: In the production process, all biodegradable materials are used to ensure that the entire life cycle of the product from production to disposal meets environmental protection requirements. This production method helps to reduce dependence on traditional petroleum-based plastics and reduce the risk of environmental pollution.
Resource recycling: Some manufacturers also focus on the recycling of resources, further reducing production costs and environmental pollution by recycling waste biodegradable materials and reprocessing them.
4. Intelligent and automated production
Intelligent production lines: With the development of science and technology, more and more biodegradable film and bag manufacturers have begun to introduce intelligent production lines. These production lines can achieve real-time monitoring and precise control of the production process by integrating advanced sensors, control systems and data analysis technologies, improving production efficiency and product quality.
Automated packaging equipment: In the packaging process, the application of automated packaging equipment is also becoming more and more widespread. These equipment can automatically complete the processes of bag forming, filling, sealing, etc., reduce manual intervention and errors, and improve packaging efficiency and consistency.
In summary, the production process of biodegradable films and bags contains a number of innovative technologies, which cover multiple aspects such as materials, processes, environmental protection and intelligence. The application of these innovative technologies not only improves the performance and environmental protection characteristics of products, but also promotes the sustainable development of the entire industry.