Rubber injection molding

Many key industries rely on our solutions for the mass production of rubber parts. These industries include healthcare, automotive, electronics, and more. With over 50 years of experience in the design and manufacture of high-quality rubber injection molding machines, we have established a strong reputation in the market. Our machines are known for their precision, durability, and efficiency.

injection molding

Understanding the rubber injection molding process

Rubber injection moulding is a process in which plasticised and preheated rubber is injected into a hot mould that shapes it into the desired product. This process can be used to create products of all shapes and sizes, but it is most commonly used to create rubber parts for cars and other vehicles. There are two main types of rubber injection molding machines: horizontal and vertical. The main difference between both machines is the way in which the rubber is injected into the mold.

Horizontal machines are typically used for smaller products, while vertical machines are better suited for larger products, sometimes with additional inserts which are over moulded.

Each type of machine has its own advantages and disadvantages, so it is important to choose the right machine for your needs.

Producing rubber and silicone molded parts profitably and precisely

The advantage of horizontal machines is that the gravity can be used for automated demoulding processes, but they are typically more expensive than vertical machines. The disadvantage of horizontal machines is that they can typically only create products that are a few inches in size. Vertical machines, on the other hand can create large products, such as engine mounts or electrical insulators.

We at DESMA provide both vertical and horizontal machines because we understand that each customer has unique needs.

As an expert for rubber injection molding machines, we are here to provide you a wide range of rubber injection molding machines, including:

Additional we are very familiar with cold runners, molds, automation solutions and valuable services.

Cold Runners

What is cold runner injection molding?

Most cold runner injection molding are used for the production of rubber products. The advantages of this type of machinery are many and include the ability to produce large numbers of identical parts using a variety of different materials. In addition, rubber injection molding is relatively quick and easy to set up, making it an ideal choice for high volume production runs.

A cold runner injection molding system consists of two parts: the liquid temperated runner distribution plate with nozzles and a combined insulating and heating platen. The runner is a system of channels that distributes the plasticized and pre heated material to the cavities of the mold. The main advantage of a cold runner system is that it can be used with nearly any type of rubber or elastomers.

Turnkey from your injection molding expert

As one of the leading suppliers, we design, develop and build molds and cold runner systems for a very wide variety of rubber and silicone articles, industries, quality standards and production requirements. Designed for every application. We provide a broad product portfolio with intelligent technologies for an extremely diversified range of objectives of the elastomer processing industry – from proven open systems to forward-looking cold runner systems with shut-off systems.

DESMA designs and manufactures individual molds , cold runners and systems for process automation, which are perfectly designed for use in DESMA injection molding systems. Tailor-made process automation for all clamping force sizes, production volumes and requirements also guarantees efficient production.


Molds make the difference

Molds from DESMA are used in the most different industrial fields. Our project planning staff develops the most cost-effective mold design and relies on a wealth of experience from thousands of completed mold orders. The actual implementation in our manufacturing is the foundation for your continuing production success.

Requirements on a cold runner

  • Balanced flow properties in the distribution system
  • Defined filling of cavities
  • Low pressure loss
  • Continuous material flow without marginal deposit formation and dead spots
  • Cross sections of the distribution channels adapted to material and injection volume
  • Flash-free transition between cold runner nozzle and mold
  • Dynamic material flow without interfering edges
  • Simple, fast and confusion-proof disassembly and assembly
  • Homogeneously controllable temperature of the block and the nozzles
  • Defined temperature transition between cold runner and mold
  • Even temperature distribution of the heating plate
    Good insulation between block and heating plate

Ahead with DESMA molds. The DESMA mold shop produces injection molds and cold runner systems for all clamping forces and machine makes. Along with DESMA machines, comprehensive injection molding systems result which excel with efficiency and environmental protection. The various industry requirements are factored into the DESMA developments and ensure with intelligent technology maximum performance, productivity and profitability in elastomer processing. In our mould construction centres in Fridingen (Germany), Ahmedabad (India) and Hebron (USA), DESMA construtes and finishes high-quality moulds and cold runners for sophisticated elastomer products.


Comprehensive solutions for a wide variety of applications

We provide services for the elastomer processing sector utilizing cutting-edge technologies and comprehensive mold making and injection molding services. Products including automobiles, infrastructure components, energy supply systems, and medical devices are manufactured using our systems.

In order to secure competitive advantages for elastomer processing companies in the long term, DESMA works together with customers to implement system solutions which cater to the individual field of application. These systems are synchronized with regard to technology and economy. Our solutions encompass innovative DESMA injection molding machines, molds and automation systems – as well as many other features which provide real added value to our customers.

Turnkey systems for immediate use

Every turnkey system by DESMA combines the specific requirements of our customers and the overall competence of DESMA research & development and consulting & project engineering. In close connection with our excellent service & knowledge transfer, DESMA system solutions allow for safe processes and rubber and silicone molded part production that is extremely profitable.

Full service provider for rubber injection machines

DESMA provides customer support and service throughout the purchase process, including before, during, and after purchasing. Customers are supported by DESMA with full service and technical assistance. The worldwide network of DESMA manufacturing and servicing locations ensures expert consulting from experts all around the world, as well as rapid assistance. From project engineering to run-off tests, the DESMA team of experts provides advice and support.


Automation solutions

When it comes to automation solutions in the elastomer processing industry, DESMA is your partner. As the world’s leading supplier of rubber injection molding machines, we have extensive expertise in the successful automation of even complex tasks. Practical examples of implemented automation solutions at our customers prove our expertise.

You can take advantage of this know-how to increase your productivity and efficiency in elastomer processing. We are there to help you with your automation project for rubber injection molding machines.

You can rely on our team of experts to provide you with the best possible solution for your needs. We offer a wide range of services, from feasibility studies to turn-key projects. Challenge us with your automation project today! We are confident that we can provide you with a solution that will meet or exceed your expectations. Contact us today to get started.


Why using rubber injection molding?

Rubber injection molding is the perfect choice for products that need to withstand high temperatures or extreme conditions. The rubber material can flex and stretch to accommodate these demands, while still providing the strength and durability you need.

What are the main advantages of rubber injection molding machines?

One of the main advantages of using a rubber injection molding machine is that you can create very intricate designs. The process is also very reliable and has a very high output rate.
Another advantage of rubber injection molding is that it allows for the creation of complex shapes that would be difficult or impossible to create using other methods.

The most common benefit of injection moulding is that it enables you to scale up production and produce a large number of components. The manufacturing cost is extremely low once the initial development fees as well as the molds have been paid for. Production costs decrease with each additional part manufactured.

How does rubber injection molding work?

The process of injection molding begins with plasticizing and preheating the rubber by using of a feeding screw into the injection cylinder and then injecting it into a mold. The rubber is then cooled and solidified so that it takes on the shape of the mold. Once the rubber has cured, it is ejected from the mold and the process is complete.

What is rubber injection molding?

Rubber injection molding is a manufacturing process for creating rubber parts and products by injecting plastified preheated rubber into a mold. It is a common process in the rubber industry, as it offers a number of advantages over other methods, like compression moulding process of manufacturing rubber parts and products.

Who offers rubber injection molding machines?

There are many manufacturers of rubber injection molding machines. Some of them are very well known. These companies offer a variety of machines to meet the needs of different customers. There are also many smaller companies that offer rubber injection molding machines. The advantage of buying from a well know company is that their level of experience allows you to produce rubber parts with a high degree of accuracy. The disadvantage might be that their machines may be more expensive than those from a smaller company.

When choosing a rubber injection molding machine, it is important to consider the needs of your business and choose a machine that will meet those needs. There are many factors to consider when choosing a rubber injection molding machine, such as price, accuracy, output or delivery time and so on.

General Information

Rubber injection molding in a nutshell

Through innovative solutions, we provide the best performance. With over 50 years of expert machine and mold building under our belt, we offer top-notch elastomer processing solutions. To this end, we modify DESMA injection molding equipment, molds, and automation systems to match client needs in order to provide them with strategic competitive advantages.

A head start through DESMA technologies and full service. Our goal is to develop technically perfect system solutions for the safe, economical and profitable production of rubber and silicone articles.

The advantages of the DESMA process are manifold:

  • Reduced set-up times and changeover times due to mold inserts
  • Low energy consumption through intelligent machine concepts
  • Optimum elastomer properties through intelligent process control systems

To achieve this, we offer injection molding technology and mold making from a single source and make the entire know-how from our research and development, consulting and project planning, design and production available with every DESMA system.

The result is a high-quality machine for every application and industry. All this is implemented in an energy-efficient manner under the motto “Better rather than more”.

We have specialized in the design and manufacturing of special machines to meet the unique demands of our customers. Special machines are built to the same high standards as all of our rubber injection molding machines.

They are characterized by their innovative design, precision engineering and outstanding performance. We offer a wide range of services to support you in every phase of your project – from planning and consulting to start-up and training.

Turnkey systems from DESMA are ready to go. Every turnkey system from DESMA is tailored to the unique needs of our customers and includes the full competence of DESMA research & development, as well as DESMA consulting & project engineering. Especially in conjunction with our fantastic service and knowledge transfer, DESMA system solutions enable safe processes and a highly profitable production of rubber and silicone molded parts.


Advantages of rubber injection molding

  • high precision and repeatability
  • low labor costs
  • little to no material waste
  • quick production times
  • rarely machining after production required
  • enables the production of finished parts in complex shapes

Disadvantages of rubber injection molding

  • initial investment in machinery can be costly
  • requires trained operators