• Injection molding

    Injection molding

Our services as a plastic injection molding manufacturer



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.

Plastic injection molding, or simply injection molding, is a process for manufacturing high-quality plastic parts. From tooling to part manufacturing, Plastro Mayer provides a precise and efficient manufacturing solution. This process is widely used in industry because the precisely molded plastic parts can be produced in high quality in large quantities.

The injection molding process consists of several steps:

  • Mold preparation: preparation of the injection mold in the mold shop. 
  • Material melting
  • Injection phase
  • Cooling phase and solidification
  • Mold opening and part removal
  • Post-processing
  • Re-injection - the process starts again from the beginning

Plastics processing can be carried out using single-component injection molding or multi-component injection molding. Both processes are ideally suited to the production of large series of plastic parts. However, injection molding can also be used for small-batch production of technical plastic molded parts. With our modern injection molding machines, we guarantee a precise, efficient and automated process.
You can also choose from a variety of materials:

  • Thermoplastics
  • Elastomers

We have been your reliable plastic injection molding manufacturer for many years. We will gladly accept your inquiries in order to jointly find a solution for the production of your plastic parts.

The use of plastic injection molding offers a wide range of possibilities and advantages:

  • Production of plastic parts with complex shapes and geometries
  • high dimensional accuracy and repeatability during production
  • automated and continuous process for efficient mass production
  • integration of functions from several complex assemblies into one plastic part

As an experienced plastic injection molding manufacturer, we have broad knowledge in different industries. The fact that we are an industry-independent supplier makes us your ideal partner for injection molding.

Discover an excerpt of the industries in which we have been using injection molding for our customers for many years.

An excerpt of our capabilities in plastic injection molding ...

Medical and laboratory technology

Filter and water technology


Chair industry

  • Backrest frame + seat shell

    Backrest frame and seat shell

    frame. approx. 1200g, supporting part for net covering, seat shell: approx. 1430g, high mechanical load, low distortion
  • Backrest with seat shell black

    Backrest with seat shell black

    for office chair, low distortion, good surface appearance, structured
  • Backrest with seat shell white

    Backrest with seat shell white

    high gloss, with ultrasonic welded thread inserts
  • Foot crosses swivel chairs

    Foot crosses swivel chairs

    supporting part for swivel chair, high impact strength, low warpage, surface with grain, 1500g (PA6 glass fiber reinforced)


Lamp parts

  • Final part

    Final part

    heat and shape resistant, textured surefaces, high accuracy of fit

Electric tools

  • End part printed

    2K part

    printing directly on maschine fully automated

Two component parts

Get in touch with our experts in plastic injection molding manufacturing ...

Injection molding contact

Jürgen Hack

Sales manager injection molding and devices
We are your partner if you are looking for a plastic injection molding manufacturer. We will support you in manufacturing your components with the appropriate mold. We will be happy to make you an appropriate offer and find the right solution for your project together with you. For this purpose, please send us your inquiry with indication of the corresponding annual quantity and the desired material via our contact form. If possible, please attach drawings and 3D data in STEP or IGES format to your inquiry. Our expert will then contact you for further information.

FAQ's about plastic injection molding

What materials can be processed in plastic injection molding at Plastro Mayer?
In our injection molding production we process various materials in all colors. We have a large selection of thermoplastics in stock and process them in single-component as well as multi-component injection molding. These thermoplastics include polyamide (PA), polystyrene (PS), polyethylene (PE), polypropylene (PP), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), polycarbonate (PC), polyoxymethylene (POM), and others. Glass fiber reinforced material, glass sphere material, material with mineral addition, carbon fiber or even wood fiber are also part of our standard. We also process fire-protected as well as food-safe and drinking water-approved materials. Furthermore, we offer molded rubber parts made of elastomer (NR) and also plastic parts made of bioplastic or biopolymer, which consists of renewable raw materials. We are also happy to 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 will help you select the material and, based on our many years of experience in injection molding, we can provide you with competent advice regarding the suitability for your component. If you wish, we can also sample your component in different materials to help 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. Likewise, a 3D printer is available to print out a tangible sample for you shortly. Our experts can answer any questions you may have.
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