Plastic Furniture Mould Manufacturer

How Do the Dimensions of a Plastic Furniture Mould Affect the Production Process?

The dimensions of a plastic furniture mould directly influence machine selection, cycle time, material consumption, and overall production stability. Furniture moulds are generally larger than household commodity moulds due to the size of the final products. For example, a single-chair mould may measure approximately 1200 mm × 800 mm × 650 mm and weigh between 3,000 kg and 6,000 kg depending on the steel used.

Mould size determines the required injection molding machine. A mould with a projected area of 0.8 m² may require a clamping force of 1,800 to 2,500 tons to prevent flashing during injection. If the machine capacity is insufficient, defects such as short shots or deformation may occur. Larger moulds also require higher injection volumes. For instance, a plastic chair with a weight of 8–10 kg may need an injection unit capable of delivering more than 12 kg of molten material per cycle, accounting for runners and material loss.

Cooling efficiency is another dimension-related factor. Thick wall sections exceeding 4–5 mm can increase cooling time significantly. If cooling time increases from 40 seconds to 70 seconds per cycle, daily output may drop by more than 40 percent. Proper dimensional design, including uniform wall thickness and well-distributed cooling channels with diameters of 10–14 mm, helps stabilize production rhythm.

Transportation and installation are also affected. Oversized moulds require special lifting equipment and reinforced mould bases, which add logistical considerations to the production process. Therefore, mould dimensions must be carefully coordinated with equipment capability and factory layout.

What Environmental Factors Need to Be Considered in the Manufacturing of Plastic Furniture Molds?

Environmental factors influence both mould manufacturing and long-term production performance. These factors are often overlooked but have measurable effects on mould accuracy, durability, and operational stability.

One important factor is ambient temperature during machining and assembly. Large mould components can expand or contract noticeably. For steel, thermal expansion is approximately 0.01 mm per meter per degree Celsius. In a 2-meter-long mould component, a temperature variation of 5°C may result in a dimensional change of 0.1 mm, which is significant for tight-tolerance furniture moulds.

Humidity also affects manufacturing conditions, especially during storage and assembly. High humidity levels above 70 percent increase the risk of surface corrosion, particularly for non-stainless mold steels. Dust and airborne particles can enter mould cavities during polishing or assembly, affecting surface finish quality.

Energy consumption and waste management are environmental considerations tied to sustainability requirements. Furniture moulds often involve extensive CNC machining and heat treatment, which consume large amounts of electricity and cooling water.

Manufacturers that control these factors through climate-controlled workshops and standardized procedures tend to achieve more consistent mould quality and reduced rework rates.

Custom Furniture Mould: What Factors Need to Be Considered When Selecting a Plastic Mold Manufacturer?

Selecting a suitable plastic mould manufacturer is a key decision for companies producing custom plastic furniture. The factor to consider is technical capability. Furniture moulds often involve complex structures, such as gas-assisted molding channels, multiple sliders, or reinforced rib designs. A manufacturer should demonstrate experience with moulds exceeding 2,000 mm in length or weights above 5 tons.

Design support is equally important. A qualified manufacturer should provide mold flow analysis, structural simulations, and feedback on wall thickness, draft angles, and reinforcement layouts. For example, adjusting a rib thickness from 70 percent to 50 percent of the wall thickness can reduce sink marks without compromising strength.

Quality control systems should be reviewed in detail. This includes material traceability, hardness testing after heat treatment (commonly 28–32 HRC for P20 steel), and dimensional inspection using coordinate measuring machines. Transparent documentation helps reduce project risks.

Production capacity and delivery scheduling must align with project timelines. Large furniture moulds typically require 60–120 days for completion. A manufacturer with insufficient machining capacity may face delays during peak production periods.