Design and Technology – Materials processing | e-Consult

For a lightweight, strong, and easily assembled container made from plastic (e.g., polypropylene), a combination of vacuum forming and cutting techniques would be most appropriate. Here's a detailed explanation:

1. Forming - Vacuum Forming: Vacuum forming is an excellent choice for creating the container's body. The plastic sheet is heated and drawn over a mould, creating the desired shape. This is ideal for producing complex, hollow shapes with consistent wall thickness. The advantage is rapid production of complex shapes and low tooling costs. A disadvantage is the need for a precise mould and potential for warping if the plastic isn't heated evenly.
2. Wastage - Cutting (Laser Cutting): Laser cutting would be used to cut out the base and lid of the container. It offers high precision and can handle plastic effectively. The advantage is clean, accurate cuts and the ability to create intricate patterns. A disadvantage is potential for melting or warping of the plastic if the laser settings are not optimized.
3. Wastage - Drilling (Hand or Powered Drill): Drilling would be used to create holes for joining the lid and base together. This could involve using screws, clips, or other fasteners. The advantage is creating precise holes for assembly. A disadvantage is the potential for cracking the plastic if the drill bit is too aggressive.

Justification Summary: Vacuum forming provides the structural integrity and lightweight nature of the container's body. Laser cutting ensures accurate dimensions for the base and lid. Drilling provides a reliable method for assembly. This combination balances ease of manufacturing, structural strength, and ease of assembly/disassembly, making it suitable for transporting fragile items. The choice of polypropylene is also appropriate due to its strength and durability.