What is Multi-Shot Injection Molding

Multi-Shot is also known as multi-component injection molding. In this process, two or more materials are molded with the same process and machine. As a result, the molded component is composed of different substrates and materials. For a two-shot injection molding, thermoplastic parts and LSR are combined and developed simultaneously.

On the other hand, two types of molds are used for the 2k LSR injection molding process. In this method, molding the thermoplastic parts uses a transfer molding process. It also uses a robot to remove the molded parts and transferred them to the LSR mold.

Difference Between Two-Shot and Overmolding

Although these two processes are somewhat similar, their bonding and manufacturing processes have significant differences. In the two-shot injection molding process, it provides a superior bond because the two materials used are physically and chemically integrated.

Meanwhile, overmolding process the LSR mold is placed with metal and molded components. When the mold closes, the presented substrate is molded with the liquid silicone rubber to integrate.

Difference Between Two-Shot and Overmolding
Different Types of Multi-Shot Injection Molded Parts

Applications and Industries

Multi-Shot Injection Molding is commonly applied to different industries such as:

  • Safety and other special applications
  • Consumer products
  • Automotive
  • Life Science

Different Types of Multi-Shot Injection Molded Parts

  • Power tool handles
  • Enclosures
  • Flexible buttons
  • Various multi-color parts
  • Medical products
  • Tow-tone plastic lenses
  • Caps
  • Soft-touch handles, and more
Applications and Industries
Benefits of Multi-Shot Injection Molding

Benefits of Multi-Shot Injection Molding

  • Design flexibility
  • Extensive material characteristics
  • Product performance
  • Cost and time-saving
  • Quality
  • Efficiency
  • Optimization
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