Innovative plastics processing: High-quality molded parts through modern manufacturing processes
Efficient production of plastic parts using injection molding, blow molding and multi-component injection molding
We develop and manufacture customized injection-molded plastic parts as well as complex plastic assemblies that are precisely tailored to your requirements. Our experienced team will accompany you from the first design approaches and actively support you in the development of innovative products.
Our broad product range includes a variety of injection-molded parts - from small precision parts to functional housings and highly complex multi-component injection-molded parts. We use the latest manufacturing processes such as 2K and 3K injection molding, insert technology and outsert technology.
We attach great importance to tailor-made solutions that are both functional and economical. We also offer attractive conditions for small and medium quantities so that you can react flexibly to your production needs. Contact us to find the optimal plastic solution for your project.
Information on various plastic processing methods
1. Archetype process
Thermoplastics and duroplastics are used in the primary molding process to produce plastic molded parts. The shapeless substances and granules or melts are processed into solid bodies.
Injection
The injection molding process is one of the most efficient and proven methods of plastics production. We inject the plastic under high pressure into the cavity of a mold, where it cools and hardens in a targeted manner. The result is high-precision molded parts that are flexible, durable or heat-resistant depending on the material selected. At the same time, the process enables precise adaptation to specific design requirements such as color, texture and surface finish. This creates tailor-made products with a unique character.
As a discontinuous primary molding process, injection molding offers decisive advantages over other manufacturing processes. It enables high production rates, guarantees consistent part dimensions and produces complex shapes with the highest precision. Companies also benefit from the enormous variety of materials, which allows optimal adaptation to the specific requirements of different industries.
Even though injection molding requires investment in tools and machinery, the long-term benefits make the process extremely economical. The combination of high production speed, consistent quality and enormous design freedom makes injection molding an indispensable technology in modern plastics production.
Blow Molding / Extrusion Blow Molding
Blow molding enables the precise and efficient production of hollow bodies made of thermoplastics. First, the melted polymer is transported by a conveyor screw towards a nozzle. There, a tubular preform is created that is continuously extruded. As soon as the tube reaches the required length, a knife cuts it off and transfers it to the next process stage.
In the next step, the preform is placed in the blow mold that is ready. A blow mandrel is immersed in the plastic and directs compressed air into the interior of the preform. The resulting internal pressure causes the material to expand and adapt precisely to the inner contours of the mold. This process gives the component its final shape. After a defined cooling time, the tool opens so that the finished component can be removed.
A typical identifying feature of extrusion blow-molded plastic parts is the fine seam on the underside. Commonly used plastics for this process are the polyolefins polyethylene (PE) and polypropylene (PP), as they are particularly suitable for blow molding. This technology offers a reliable and economical solution for the production of hollow plastic bodies for a wide range of applications.
2. Multi-component injection molding / multi-component injection molding
Multi-component injection molding enables the production of multi-colored molded parts and the combination of different materials in one component. This process produces both two-component and three-component molded parts, whereby only a single tool is required. This makes it possible to create hard-soft connections or combine different plastics to optimize specific properties.
The most common manufacturing processes in multi-component injection molding include overmolding process and sandwich molding processIn overmolding, a layer of material is injected directly onto a previously manufactured plastic component, which can be used to create non-slip handles or ergonomic surface structures, for example. The sandwich molding process, on the other hand, combines two melts in one molded part by enveloping a core layer in a second layer of material. This technology offers numerous advantages, such as improved stability, weight reduction or targeted adaptation of the material properties.
Multi-component injection molding opens up a wide range of possibilities for innovative product designs and functional plastic solutions. Thanks to the latest processes, high-quality, durable and visually appealing molded parts with optimal properties can be produced.
Multi-component injection molding using the overmolding process
The overmolding process enables the targeted combination of different plastics in an injection molding process. In a subsequent process step, a previously manufactured injection molded part is overmolded with a second melt. The thermoplastics can be injected either against each other or on top of each other, which allows a wide range of design and functional properties to be realized.
For molded parts that require a strong connection between the components, the plastics used should have good adhesion to each other. Proven material combinations are, for example, PP/PE or PC/ABS, as they guarantee a permanent and reliable connection. At the same time, there are applications where the individual components should remain mobile. This is the case, for example, with toys, joints or flexible mechanisms the case where a targeted separation of materials offers functional advantages.
Overmolding offers an efficient way to produce molded parts with optimized properties - be it for non-slip surfaces, ergonomic handles or multi-component solutions with different material hardnesses. This process opens up new design possibilities for durable and high-quality plastic components.
Multi-component injection molding using the sandwich molding process
The sandwich molding process (also coinjection process) usually creates parts in which the internal component is not visible because it is completely surrounded by the outer material. The reasons for using the sandwich molding process are, on the one hand, to reduce costs by using a cheaper filling material or recycled material as the invisible core of a product, and on the other hand, higher mechanical strength combined with high surface quality.
In this process, the individual components are injected directly one after the other into the injection mold (the cavity). The melt that flows in first lies continuously on the wall of the mold, where it is pushed by the second melt. The second injected melt forms the core or the interior of the finished injection molded part. The reason for this is the so-called source flow phenomenon, which ensures that the components are completely enveloped perfectly, as well as the laminar flow of the melts.
We have a Material overview which shows which combinations can be combined particularly well and which are less suitable. This overview helps developers and designers to select the optimal material pairing for their individual requirements. The right combination of materials contributes significantly to the quality, durability and performance of the final product.
You can also find this table in our Design Guide Plastic Molded Parts >>
Design Guide Plastic Molded Parts & Free Sample Card
Our Design Guide for Plastic Molded Parts and the free sample card with plastic erosion structures are aimed specifically at developers, designers and buyers who are intensively involved in the development and production of plastic molded parts.
The construction guide offers a comprehensive and detailed Overview of engineering plastics and their diverse applications in practice. Furthermore, a special focus is placed on important topics such as Material selection and construction. This guide will help you make your projects more efficient while achieving better results.
Our high quality N&H plastic sample card Made of robust, black ABS plastic, it offers you a compact and clear overview of 12 different SPI surface treatments – from highly polished to rough textured versions. The menu is complemented by the 12 most common VDI 3400 surface textureswhich are established as industry standards in plastics processing.
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This clear sample card makes it easier for you to coordinate technical requirements with the look and feel of your plastic parts. It helps you make the right decisions at every stage of your project—from planning and development to series production.