1. Injection Molding Production Lines
- Product Types and Capacity Estimation: Assuming 4 injection molding lines are dedicated to producing HDPE furniture components, such as chair seats, chair backs, and tabletops. If one injection molding line can produce 30–50 chair seats per hour (depending on size and complexity), operating 20 hours per day (accounting for equipment maintenance and mold changes), a single line can produce 600–1,000 chair seats daily. With 4 lines, the daily production capacity reaches 2,400–4,000 chair seats.
- Mold Changes and Multi-Product Production: Injection molding lines can switch molds to produce diverse products. For example, after producing a batch of chair seats, switching molds enables the production of table legs. If mold changes are completed within 2–3 hours and operators are skilled in adjusting parameters for different products, these lines can flexibly schedule the production of various furniture components weekly, further enhancing overall capacity.
2. Extrusion Production Lines
- Pipe and Profile Production Capacity: Assuming 3 extrusion lines are used to produce HDPE pipes (e.g., frames for chairs and tables) and profiles (e.g., decorative strips). One extrusion line can produce 100–150 meters of pipes or profiles per hour (varying by size), operating 20 hours daily. A single line can thus produce 2,000–3,000 meters daily. With 3 lines, the total daily output reaches 6,000–9,000 meters of pipes or profiles, which can be cut, processed, and assembled into a large quantity of furniture.
- Product Diversity and Customized Production: Extrusion lines can produce pipes and profiles of different shapes and sizes to meet customized HDPE furniture demands. For instance, uniquely designed outdoor furniture may require non-standard pipe dimensions for frames. Extrusion lines can easily adjust parameters to fulfill such needs, enhancing the factory’s adaptability to diverse customer orders.
3. Assembly Production Lines
- Assembly Efficiency and Capacity: Assuming the factory has 3 assembly lines, each equipped with sufficient workers and tools to assemble components from injection molding and extrusion into finished furniture. If one assembly line can assemble 10–15 table/chair sets per hour (depending on complexity), operating 20 hours daily, a single line can assemble 200–300 sets daily. With 3 lines, the daily assembly capacity reaches 600–900 sets.
- Quality Control and Capacity Balance: Quality checks during assembly impact overall capacity. By implementing efficient inspection points to identify and address component issues promptly, rework delays can be minimized. Additionally, maintaining capacity balance across injection molding, extrusion, and assembly lines prevents bottlenecks or idle time, ensuring optimal utilization of the 12 production lines.
4. Surface Treatment Lines (If Applicable)
- Surface Treatment Methods and Capacity: Assuming 2 surface treatment lines are used for processes like spraying or sanding on HDPE furniture. If one line can process 50–80 furniture pieces per hour (depending on size and process complexity), operating 20 hours daily, a single line can process 1,000–1,600 pieces daily. With 2 lines, the daily processing capacity reaches 2,000–3,200 pieces.
- Environmental Compliance and Efficiency: Surface treatment processes must adhere to environmental standards, such as using eco-friendly coatings and techniques. Optimizing workflows—e.g., adopting automated spraying equipment or efficient sanding tools—can enhance processing efficiency and increase production capacity.