In 2025, Changzhou Hefeng Packaging Materials Co., Ltd. applied for a patent for an non-stop double column screen changing device for the extrusion process of biodegradable polymers. This device aims to achieve continuous replacement of the filter screen during the extrusion process, ensuring production continuity and material purity.
This technology will effectively improve the operational efficiency of bio based material extrusion equipment and provide technical support for large-scale production of environmentally friendly materials.
