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Injection molding technology

With comprehensive production expertise, many years of know-how and state-of-the-art machines, SFS is one of the leading international providers in the area of Injection molding technology. Thanks to innovative processes and task-specifically selected plastics we are in a position to manufacture almost any shape in the required quality. This means that, in terms of metallic materials, it is not only significant weight that can be saved, but also costs – without compromises in terms of longevity and functionality.

Advantages

Great design freedom

The technology of injection molding allows almost unlimited variety in shapes – even intricate grid structures can be realised with high precision.

High quantity output

Thanks to the long service life of the tools used, significant potential benefits are realised in large series.

Low weight

There are often significant weight savings compared to other materials.

Pre-finished components

Our injection-molded parts are directly usable – without further follow-up treatment.

Varied material properties

Useful material properties such as corrosion and chemical resistance and many refinement options characterise the plastic material.

Innovative multi-component parts

Even two-component parts, particularly hard/soft or metal/plastic combinations as well as overmolded Carda products are possible.

Process

During the injection molding process the respective plastic is first liquefied as a granulate and then spray under pressure in an injection molded tool. Here the plastic returns to a solid state by cooling or a cross-linking reaction and can then be removed as a finished part. Our plastic injection-molded parts can be produced in the most varied of shapes and properties and are therefore suitable for use in various applications in different industries.

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Materials

Custom-made for the purpose of use

All thermoplastics and elastomers, such as polyamide, polyethylene or acrylonitrile butadiene styrene, are fundamentally suitable for injection molding technology. Thanks to our specific application expertise for the processing of technical thermoplastics, high-performance plastics and thermoplastic elastomers we are in a position to define the best-possible customer-specific material for every task.

International competence centre for plastics technology

Fast and cost-efficient solutions are created if all participating specialists are able to contribute their knowledge in an early project phase. SFS is on the market as a full service supplier as part of a focused project schedule. Our specialists are therefore already involved in the development and production processes from an early stage. And so optimised solutions are created in close cooperation with the customer.

Our global and development and production platform allows short communication paths as well as an intensive exchange of information.

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In the efficient implementation of new product ideas we support our customers with modern engineering tools. With the use of 3D CAD/CAE technologies the development time and series start-up phase can be significantly shortened.

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Using in-house toolmaking we develop the injection molding tools with modern 3D CAD systems.

With more than 600 employees and more than 250 injection molding machines at our locations we offer our customers comprehensive expertise in plastics technology. Thanks to the decentralised production our customers can rely on a high level of supply reliability.

Numbers

Employees

in plastics processing

Injection molding machines

Locations

worldwide

Our core technologies

The injection molding technology makes it possible to realise a variety of technical solutions. Only a few, production-related limits are set on component design. We have various core expertise in the manufacture of components made from plastic.

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If a component has to fulfil different function and design criteria, innovative solutions can be developed through the combination of various materials and processes. With cross-technology expertise, SFS combines the specific properties of plastic and metal highly effectively.

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The CardaFlex® process is an in-house development that allows the precise and continuous spraying of different function geometries on various support bars.

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With high-performance, high-tech tools the finest structures can be directly and efficiently manufactured. This allows structures of less than 0.1 mm, filter openings of 70 µm and unit weights from 0.02 g to be realised.

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With the multi-component injection molding process various materials (e.g. hard and soft plastics) are united in one part and one step.

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Our expertise in multi-component and precision injection molding allows the strictest production tolerances in parts with unit weights of less than 0.02 g.

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Process-integrated automation ensures a high level of efficiency in terms of manufacturing and installation. The parts extraction using CNC handling and robots takes place gently and minimises risks.

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With comprehensive process and technology expertise SFS fulfils the demands of many customers for pre-finished assemblies.

Varied services

As a system supplier, alongside conventional injection molding, we also offer many options for post-processing and further additional services.

New parts can be subjected to comprehensive tests to check specific properties in an in-house physical laboratory.

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The 100% control for characteristics increases functional reliability on the finished end product and reduces downtimes as well as malfunction rectification costs in automated assembly systems.

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In the area of connection technology, alongside ultrasound welding, rotation welding, bonding or screw connection are also available as possible solutions.

To complete individual elements or entire assemblies both manual and automated assembly methods are used.

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Laser inscriptions are permanently abrasion-resistant and clearly legible. With a laser engraving many materials can be easily labelled.

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Pad printing is an indirect intaglio printing process in which the ink is transferred from the printing plate to the printing substrate via an elastic pad made from silicone rubber.