Should you use injection moulding techniques in your manufacturing?
The manufacturing industry has an abundance of new and innovative materials that are used in a variety of products and moulding techniques. One such material is structural foam moulding, which can be used for many items such as furniture and insulation.
Structural foam moulding is a versatile process that can be used for various applications. It is the process of shaping polyurethane foams into desired shapes and densities by pouring them through a mould cavity. This article discusses the benefits of the two popular techniques: High-Injection Moulding and Low-Pressure Moulding.
The benefits of High-Pressure Injection Moulding
The high-pressure injection moulding method involves injecting the polyurethane into the mould cavity at very high pressure, which causes it to harden almost immediately after injection. This technique requires custom tooling and advanced machinery but allows manufacturers to create large parts with intricate features and tight tolerances.
High-Pressure injection moulding techniques offer many benefits for a range of applications. By using high injection moulding to create your next part or product, you can improve the quality and appearance of components, reduce manufacturing time, and maximize efficiency.
One benefit that is often overlooked is the ability to apply high-quality coatings and finishes to a part. And another is that it leads to reduced costs per part: A big advantage of applying coatings is being able to reduce costs.
High-injection moulding techniques allow manufacturers to apply coatings and finishes that wouldn’t otherwise be possible using other manufacturing processes such as sandblasting or powder coating.
Other benefits of high-pressure injection moulding include: precise control over wall thickness, creating complex shapes with ease, and tight tolerances on features.
The benefits of Low-Pressure Moulding
Alternatively, the low-pressure method involves expanding polyurethane into a mould cavity at lower pressures to produce less dense parts with greater flexibility. This technique requires minimal tooling but is limited in terms of size and material properties.
Low-pressure injection moulding is an alternative for producing prototypes and short runs. It has many benefits, like reduced production time or simplified tooling costs, because it can be done at lower temperatures than other methods.
The other benefits of Low-Pressure Injection Moulding include:
- Able to produce short runs and prototypes with ease due to lower costs and setup time.
- When using a fluoropolymer (such as PTFE), the fluid state of the material makes it impervious to many chemicals, solvents, etc. Because it’s not filled with them before injection.
- Compared to other methods, low-pressure can be faster and produce less waste, which makes it better for the environment.