Office Chair Plastic Modification
Office chair plastic modification primarily revolves around the selection of PA6 and PA66 materials and formulation processes to meet the performance requirements of different components.
In the modification of plastics for office chairs, different core components have varying requirements for modified plastics.
Office Chair Armrests: As a core component integrating appearance and structure, they have extremely high requirements for structural rigidity, surface finish after injection molding, and subsequent processing adaptability. The mainstream choices in the industry are PA6 - GF30 and PA66 - GF30 modified plastics, which are core materials suitable for various adjustable armrests and conventional armrest frames. However, in actual mass production, glass fiber-reinforced nylon materials have numerous issues. For example, they are prone to fiber floatation, which affects product appearance; after pressing or impact, they turn white under pressure, leading to uneven surfaces. These problems not only reduce the product's aesthetic appeal but also prevent normal post-processing steps such as painting and texturing, significantly increasing the product scrap rate. To address these issues, Guangdong Weilifang New Materials Co., Ltd. has developed a specialized modified material for office chair armrests. This specialized material is fully compatible with mainstream applications such as adjustable armrest frames and PP-modified armrests, improving injection molding defects such as fiber floatation, pressure whitening, and shrinkage from the raw material source, and is stably compatible with automated high-speed injection molding lines.
Seat, Backrest, and Mesh Back Frame: These components are the core load-bearing structures of office chairs, continuously bearing static pressure from the human body and repeated dynamic pressure over long periods. Therefore, the creep resistance and fatigue resistance of the materials are key factors determining the product's service life. If the material performance does not meet standards, long-term use can lead to issues such as frame deformation, collapse, and looseness, severely affecting the user experience. The industry commonly uses PA6 - GF30, PA66 + 30, and other modified materials to meet the performance requirements of these components, ensuring that the office chair maintains stable structure and good performance during use.
