what makes the Liquid Silicone Rubber mold different?

   Optimizing the design of the runner is crucial for achieving successful liquid silicone injection molding. Key considerations in runner design include:

a. Flow Balance: Ensuring a balanced flow of liquid silicone through the runner system is essential to prevent variations in part dimensions and quality. Proper runner design, including size, shape, and placement, contributes to achieving flow balance.

b. Gate Design: The gate, where the runner connects to the mold cavity, plays a vital role in controlling material flow and reducing pressure drop. Selecting the appropriate gate type and size is critical for achieving optimal part filling and minimizing defects.

c. Material Efficient Design: Efficient runner design minimizes material waste and reduces production costs. By optimizing the runner size and layout, manufacturers can achieve an optimal balance between material usage and part quality.

1. The Purpose of the Runner:
The runner in a liquid Silicone injection molding machine serves several important purposes:

a. Material Distribution: The runner evenly distributes the liquid silicone material from the injection unit to multiple mold cavities. It ensures consistent filling and helps prevent variations in part dimensions and quality.

b. Thermal Control: The runner helps maintain consistent temperature throughout the mold by acting as a thermal channel. This is particularly crucial for liquid silicone, as maintaining precise temperature levels is essential for achieving optimal curing and part quality.

c. Pressure Equalization: The runner allows for the equalization of pressure within the mold cavity during the injection process. This helps prevent defects such as air traps or short shots, ensuring complete filling of the mold.

2. Types of Runners:
There are different types of runners used in liquid silicone injection molding machines, including:

a. Cold Runners: In this configuration, the runner remains solidified after the injection process. The liquid silicone material is injected into the runner, which then transfers it to the mold cavities. Cold runners are simple to design and implement but often result in more material waste and longer cycle times due to the need to remove the solidified runner after each shot.

b. Hot Runners: In hot runner systems, the runner remains heated throughout the injection molding process. This eliminates the need for removing solidified runners, reducing material waste and cycle times. Hot runners are commonly used in high-volume production, as they offer improved efficiency and cost-effectiveness.

3. Significance of Runner Design:

    Guangzhou S-guangyu Machinery & Equipment Co.,Ltd is a professional liquid silicone rubber(LSR) Injection molding machine manufacturers in China since 2010.We have got more than one hundred patents and serve for more than thousands of customers .if you want to learn more about our machines,please visit our web www.lsrexpert-better.com or contact us:86-13902294163.