What are the differences in production scrap rates between plastic outdoor armchair materials?

The production scrap rates of plastic outdoor armchairs vary significantly depending on the material used. Common polymers like polypropylene (PP), high-density polyethylene (HDPE), and polyvinyl chloride (PVC) exhibit distinct scrap rates due to differences in moldability, thermal stability, and structural integrity during manufacturing.

PP is widely favored for its balance of flexibility and strength, often resulting in lower scrap rates (3-5%) due to its resilience in injection molding. HDPE, while durable, can experience higher scrap rates (6-8%) because of its susceptibility to warping under high temperatures. PVC, though rigid and weather-resistant, may generate scrap rates of 7-10% due to its brittleness during cutting and assembly.

Recycled plastics, while cost-effective, often have higher scrap rates (10-15%) because of inconsistent material quality. Advanced additives or composite blends can reduce scrap by improving flow and cooling properties. Manufacturers must weigh material costs against scrap rates to optimize production efficiency for outdoor furniture.

Understanding these differences helps in selecting the right material to minimize waste and maximize output in plastic armchair manufacturing.