• Injection molding

    Injection molding

What we offer ...



Thermoplastics and elastomers as single component and mulitcomponent parts
Part sizes

Part sizes

from 1g to 4,9kg
Closing force

Closing force

30t to 1100t


fully automated robot handling systems fully automated subsequent processing
Subsequent processing

Subsequent processing

Printing, embossing, welding and Pressed-in parts


We carry out all sampling for new project starts in-house and qualify them professionally.

This is injection molding ...

Injection molding or plastic injection molding is a process for manufacturing plastic parts. Various materials (e.g. thermoplastics and elastomers) are heated and liquified before being injected into an injection mold. Cooling in the mold causes the injection molded part to solidify again and a dimensionally stable end product is created. Plastics processing can be carried out using single-component injection molding or multi-component injection molding. This process is particularly suitable for plastic part production for large series, but injection molding can also be used for small series production of technical plastic molded parts.

Get in touch with our experts ...

Injection molding contact

Sale - Injection molding

Do you have a component that you would like to have manufactured from plastic? Then you have come to the right place! We are happy to provide you with a corresponding offer and find the right solution for your project together with you. To do this, simply send us your inquiry with details of the corresponding annual quantity and the desired material using our contact form. Please attach drawings as well as 3D data in TEP or IGES format, if available. Our expert will then contact you for further information.


What materials can Plastro Mayer process in plastic injection molding?
In our injection molding production, we process many different materials in many different colors. Our range of materials currently includes over 650 items. We have a large selection of thermoplastics in stock (polyamide/PA, polystyrene/PS, polyethylene/PE, polypropylene/PP or also polymethyl methacrylate/PMMA etc.) and process these in single-component as well as multi-component injection molding. Glass fiber reinforced material, glass ball reinforced material, material with mineral addition, carbon fiber or wood fiber also belong to our standard materials. We also process fire-protected materials as well as food-safe and drinking water-approved materials. Furthermore, we also offer molded rubber parts made of elastomer (NR) and also plastic parts made of bioplastic or biopolymer, which either consist of renewable raw materials and/or are biodegradable. We can also process your desired material. If you are not sure which material is best suited for your plastic part, please feel free to contact our experts. We can help you select the material and, based on many years of experience in injection molding, we can also provide you with competent advice on the suitability for your component. On request, we can also sample your component in several materials to assist you with test procedures and selection.
Which processes and material combinations are possible in plastic injection molding to produce 2K parts?
There are various options in plastic injection molding for producing a plastic part from several materials. This can be implemented, for example, by a turntable mold or also by a transfer mold. In this case, the first material is used in the first injection cycle (usually the hard component), then the plastic part is either transferred with a handling system or operating personnel (in the case of the transfer mold) or the mold is rotated into a new position (turntable mold) in order to then inject the second material (usually the soft component) into the mold in the next injection cycle. These processes are used, amongst others, for handle housings, battery housings or displays. Many materials can be combined, but adhesion must be ensured. In addition to hard components and soft components, a combination of two hard components is also possible. This means that different colors can be combined in one part. Hard and soft combinations are also often used for housing parts which contain a seal. Here, for example, a soft component made of TPE can be molded onto the hard component made of ABS. Our experts can help you find the optimum solution for your 2K part.
What storage options does Plastro Mayer offer to store plastic injection molded parts until use?
For the storage of produced plastic parts we adapt to your wishes and possibilities. We have a large finished goods warehouse in Trochtelfingen, where we can store the manufactured injection molded parts for you until they are needed by you. Furthermore, we can also deliver manufactured goods to a consignment stock of your choice or directly to you. Please ask our experts, we can arrange flexible solutions for you.
What do you have to consider when designing parts that are to be produced by plastic injection molding?
The following should be considered when designing plastic parts: Wall thicknesses should be designed to be as strong as necessary, but as thin as possible. Plastics may be light and inexpensive, but you still want to get the maximum out of cost and weight savings. The larger the volume of the molten plastic, the more likely is the formation of air pockets or bubbles. Plastics are poor heat conductors and have high thermal expansion. On the outside of mold, the component cools quickly (solidifies), whereas inside it is still hot, cools down only gradually and wants to contract in the process. The greater this internal volume, the greater the distortion of the component. An even distribution of the mass should be aimed for. Splices should be cleverly placed and transitions should be rounded. Furthermore, you should chamfer the surfaces for better demolding (insert demolding chamfers). However, the staff in our in-house engineering and design department can help you with the design and construction. They have a great deal of know-how in this area and can support you with your injection molded part.
What options for component optimization can Plastro Mayer offer in plastic injection molding?
We have various options available to optimize your plastic part. Internally, we can offer you the support of our engineering and design department. With a Moldflow analysis, our staff can examine various aspects of a part, such as shrinkage or uniform filling of the mold. Through this analysis, we can identify weak points in the geometry of your plastic part or mold design and eliminate them accordingly before the injection mold is created. In order to carry out a Moldflow analysis for your injection molded part, we only need the CAD data of the part and the specification of which material you would like to use. We can perform the analysis for several materials if you have not yet decided on one. For the optimization of the manifold system or the cooling we can also offer you further warpage calculations, for which we have been working with an external partner for many years. Our experts can answer any questions you may have.
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