More producers are resolving to overmolding as they figure out how it increases the value of their product s. In addition to the fact that it improves usefulness, aesthetics, and execution, it brings down all costs of production which is today a rare combination. The product’s substrate is bonded using a slight layer of thermoplastic elastomer using the overmolding one or two shot process. This external layer forms the popular soft-touch grasp for many products ranges like individual care items such as toothbrushes and power tools. Overmolding further lowers vibration and shock, inhibits sound, offers electrical protection, aids resistance to UV or chemicals, and even hinders moisture and oxygen.
Subsequently, more buyers are requesting this touch to the items they buy hence the expansion of overmolding applications. This technology availability further offers engineers of products more choices to form functional and attractive products and continuing to stay on the markets leading design edge. Overmolding cannot only be done by one injection molder but it needs more training, updated equipment, exact control of several variable during the production run. Quality can be affected if there is even a small change meaning that professional operators are compulsory. So much of this data is linked to the substrate used and type used meaning that deeply understanding the chemical behavior and science of the material is vital. There is continuous engineering of new paint mixes to give properties that are expanded like clarity, hardness and resistance to heat, chemical, UV and scratch.
A key guide in overmolding is deciding the finest substrate blend for ideal holding, and the design of proper tools and mold. Keeping the temperature that guides the flow and bonding is very important. The substrate surface must be kept clean, not contaminated with skin oil, dirt, excessive moisture and dust this means that gloves should be used for handling failing which the may fail or be weak.
In tooling, vents should be placed well to allow air release from the mold cavity when overmolding. It is not popular when updated technology improves the products viability and gain clients satisfaction and maintain low production costs. The costs will be lessened only when overmolding can lower the production steps to be followed. Viscosity, flow rate, material type, and shear amount may be needed for deciding the gate size. When the steps are followed the procedure of one injection, the molding quality helps in throughput, waste reduction and reduced the cost of production. When shutoff is going on the proper designed should be ensured so that the involved materials can lower the curling or delamination risk.