What is Injection Molding Thermoplastic Rubber?

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ICOMold uses highquality thermoplastic rubbers (TPR) for injection molding manufacturing. Thermoplastic rubbers are easy to liquify or mold and then harden to achieve a custom part’s desired shapeICOMold has a wide variety of thermoplastic rubbers available for injection molding. We can help you select the best TPR for your design. 

Injection molding thermoplastic rubbers are plastics that are easy to manipulate once heated to a specific temperature and become solid at room temperature or through a cooling process. Thermoplastic rubbers are ideal for injection molded parts because they have excellent impact strength, elasticity, and fatigue resistanceThere are many advantages and applications of thermoplastic rubber. 

Advantages of Injection Molding Thermoplastic Rubber

There are many advantages to using thermoplastic rubber for the injection molding process. The most notable is the numerous rubbers available to suit different designs. Some of the additional benefits of using thermoplastic rubbers for an injection molding project include: 

  • Fatigue resistance
  • Tear and abrasion resistance 
  • Weatherability 
  • Chemical resistance 
  • High impact strength 
  • Elasticity 
  • Recyclable 

Injection Molding Thermoplastic Rubber Specifications

Thermoplastic Rubbers (TPR) are synthetic rubbers formulated using SBS (styrene-butadiene-styrene) and have plastic and rubber’s combined properties. When heated, TPRs become liquid and become solid when cooled or at room temperature. Thermoplastic rubbers are available in a wide range of durometers, from 20 Shore OO to 85 Shore D. Thermoplastic rubbers may be recycled. 

Injection Molding Thermoplastic Rubber Process

The injection molding process is a highly efficient process that facilitates largescale production. Once a custom mold has been created to a customer’s specifications, the manufacturing process is speedy compared to other manufacturing processes. The ability to produce parts at a high output rate makes injection molding thermoplastic rubbers such a costeffective and efficient method. The strength of thermoplastic rubbers can be enhanced by using fillers. The result is a part that is lightweight and durable. Machines and robotics perform the bulk of the injection molding process. This reduces the cost of overhead and increases accuracy, passing on savings and benefits to the customer. 

Applications of Injection Molding Thermoplastic Rubber 

Thermoplastic rubbers are often used in injection molding applications when a lightweight and durable part is needed. Many industries commonly use thermoplastic rubbers to produce goods for both consumer and commercial use. Some popular applications of injectionmolded thermoplastic rubber include: 

  • Footwear 
  • Gaskets 
  • Toys 
  • Automotive parts 
  • Over-molding 

Is there a Difference Between TPR and TPE?

Thermoplastic elastomer (TPE) is similar to TPR. There are a few differences between TPR and TPE. When burned, TPR releases a thick, dark smoke while TPE releases a thinner smoke. TPR is most commonly used for products that must be glued together or that require a glossy look. TPE is best for medical or food grade products. Lastly, TPE is made from a modified SEBS base and has a matte appearance. TPR is made from an SBS base and has a glossy finish. 

Get a Quote on Injection Molding Thermoplastic Rubber Today

ICOMold can work with you on the design and production of your thermoplastic rubber partGet an instant quote today.  

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