Prototype injection moulds
We offer the manufacture of prototype injection moulds for short series of products. The use of these moulds allows testing the design for correctness, selecting the best type of material or adjusting the design to the selected material.
Depending on demand, moulds of this type are made by various technologies, including also “Rapid Prototyping”:
- Making moulds by incremental technology using the methods of Selective Laser Sintering (SLS) or Selective Laser Melting (SLM). In the case of selective laser sintering (SLS), mould components are created by application of the layers of metal powder and selective sintering of these layers by means of a laser. As in the case of classic powder metallurgy, a porous structure is obtained here. In contrast to the SLS method, the method of selective laser melting (SLM) results in complete remelting of processed material provided in the form of powder, which reduces porosity and allows for higher strength properties. However, the SLM method requires the use of supports, which must be later removed by machining.
- Making moulds of simple design allowing for manual removal of part from the mould after injection. The simplified mould is usually equipped with a system of cold channels. It can be made of cheaper materials than the target mould; its operating mechanisms and cooling systems are also simplified.
- Making moulds from materials of lower hardness to produce prototypes by means of reactive low-pressure moulding. It is possible to make a test mould from materials such as aluminium or epoxy resin. The low-pressure injection of polyurethane resin is much less energy-intensive than the classic injection (low pressure and temperature), and the variety of available resins allow obtaining a prototype, which in terms of properties will be similar to polyolefins, styrene plastics, polyamides, and others.