Injection moulding tools for maximum productivity.

Multi-component injection moulding is a speciality of Hofmann – Ihr Impulsgeber. Moulds which process a variety of different plastics are efficient and functional. This opens up loads of options for the user. It is precisely these complex components which require a special degree of expertise and precision, such as in the design and implementation of the gating system. This is just one reason why you can trust Hofmann – Ihr Impulsgeber when it comes to multi-component injection moulding.

Gas and water injection are especially ideal for the economical production of thick-walled or hollow parts where the material at the core of the item is flushed out using a fluid (gas or water). This material is either led into an overflow cavity or can be conveyed back into the screw via the hot runner, making it available again for the next cycle. In addition to thick-walled parts (e.g. handles, pedals etc.), gas and water injection are also suitable for media lines made of plastic (e.g. moulded tubes for air conditioners and cooling water).

The use of a multi-daylight mould is often recommended for large, flat parts and high quantities. By arranging the parts one after another in two main divisions, multiple items can be produced with a slightly higher required closing force in comparison to one main division.

Tandem injection moulding also offers the advantage of being able to produce items of different sizes with the same material. Production costs can be reduced by up to 40 %, as injection always only occurs on one of the parting lines (the other one is in the cooling phase during this time).

In contrast to conventional injection moulding, injection compression moulding involves injection into the slightly open mould and the cavity not closing until during the solidification process. This enables a more direct and event transmission of force to the molten plastic. In contrast to conventional production, parts produced with injection compression moulding technology exhibit less distortion and intrinsic tension. As thinner walls in comparison to injection moulding are possible at the same time, the technology is also very economical.

With insert technology moulds, pre-fabricated metal parts are inserted into the mould and over-moulded. The combination of metal and plastic creates hybrid parts which exhibit the advantages of both materials. Thanks to the great wealth of experience in this area gathered by Hofmann – Ihr Impulsgeber over many years, the most stringent precision requirements and tolerances of these parts can be implemented in a targeted and efficient way.