Key points in pouring design of liquid silicone molds

Runner gating system design.

Cold runner molding is one of the important processing features of liquid silicone

A cooling system needs to be designed inside the cold mouthpiece:

There is a big difference between cold runner molding and hot runner system. The inside of the cold spout needs to be designed to carry water, and if the runner between the cavity and the cold runner is too hot, the material will start to solidify before injection, and the product will easily crack. Glue out and other phenomena.

The cold mouth needs to be designed with a closed system, automated production, and shorter cycle time:

The design of the cold nozzle requires a needle valve closing system. The glue opening is designed to be between 0.5-0.8mm. The valve needle system needs to be designed with a height-adjustable structure to facilitate fine-tuning the flow rate through the needle valve.

The cold nozzle needs to be designed with a glue amount control system:

For micro-products such as injection molded silicone seals, the weight of the product is less than 1 gram. It is necessary to design a precise control system for the amount of glue to ensure that the amount of glue in the flow channel is controllable and adjustable.

Miniature product, designed with a precision control system for the amount of glue in the flow channel to ensure that the amount of glue in the flow channel is controllable and adjustable.