An efficient and effective way of producing the quality plastic goods is Injection moulding. Quality is ensured, but with many production processes, the cost is a factor that demands serious consideration. It is generally the cheapest way of manufacturing a product, but it has the possibility to become expensive due to a number of factors.
There are various factors in the cost of injection moulding may in part depend on the quality of the materials used, the intricacy of the part and size, but here’s a broken-down of the three biggest cost drivers when it comes to injection moulding.
1. Part design
One advantage is designing will save a lot of money. There are many things taken into consideration while designing a part to be injection moulded. For maximum efficiency, Materials, cooling time and labour needed to create the tool are considered while designing a part. A badly designed part will cause more rejects, extra labour and slower cycle time (including cooling time). A part can have the complexity or intricate and may require extra or special tooling costs because part may not be designed well for tooling. A part may be designed so that it still requires post-moulding work, adding yet more labour. Transport and packaging costs are not taking into account; a good design will ensure space requirement when in storage and shipment. Good part design reduces the cost of plastic moulding dramatically.
The quality of the mould creation will have a direct impact on the cost of injection to a larger extent. Mould’s design limitation is the parting line – the line which divides the two halves of the mould, the core and the cavity. It is carefully considered when tooling a mould. For instance, if the mould is correctly tooled, can be orientated along the parting line, if incorrectly tooled, however, it will create an undercut or overcut, and the part will snag in the mould. If happens, this will require labour to fix the problem and it will increase the cost and precious time will lose that can be being used to create more parts.
3. Tool design
Both the quality and production cost of your finished part will have an immediate impact on the quality of your tool design. Nothing accounts for the quality, and the reliability of a tool that will deliver what you want every time will outstrip your initial investment in a very short amount of time. For example – A cheaper injection moulding tool will only save money in the short term. It will tend to become a liability in the long term effect as its lack of reliability and slow running time. A consistently high-quality end product will only be ensured when the investment will be done on quality tool design specifically matching your needs and requirements.
Taking time to consider your needs and planning accordingly will bring you a worthwhile return on your investment. By insisting on good part design, tooling and tool design, you have assured a relatively stress-less endeavor when setting out to produce your product.