Question: What is the difference between silicone compression molding and silicone injection molding?
Answer: In the compression molding process, the mixed silicone is filled into an open mold. For a core and cavity mold, the cavity side is usually filled with excess material. Once filled, the two halves are then uniformly compressed under hot platens. After a certain amount of curing time, the two halves are either manually or mechanically opened. The final part is removed after excess material is detached.
In the injection molding process, the A and B component materials are mixed from the mixing unit, and immediately travel through the cool barrel. The mixed material is then injected in a hot closed mold. After the curing and mold-open phase, the final part is removed from the mold.