The Essentials of Molding – 101

Methods of Overmolding and its Benefits

Many manufacturers are resolving to overmold as they understand the ways in which values on their product lines are being added. It improves the performance, functionality, and aesthetics and lowers the costs of production which is not common today. Overmolding is a process that one-shot or two-shot that patches a flimsy layer of thermoplastic elastomer to the products’ substrate. This layer that is external creates the tender touch grip which is common for a broad products range like power tools, toothbrushes and others. Oxygen and moisture are barred, there is resistance of chemical or UV, electrical protection is provided, the sound is dampened, and shock and vibration is reduced by overmolding.

Subsequently, more buyers are requesting this touch to the items they buy hence the expansion of overmolding applications. Product engineers are given many chances by this technology availability the ability to form functional and attractive items that stay continuously on the markets leading edge. For successful production run, not all injection-molders can overmold but they need specialized training, state of the art equipment and proper control of several variables. Even the scarcest varieties can influence quality, so qualified operators are an absolute necessity. 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. New blends of paint are always been produced to offer properties that are expanded like UL standards, resistance on UV, heat, chemical, scratch and hardness.

The main step in overmolding is knowing the right combination for substrate and for strong bonding along with designing the right tools and mold. It is important to keep the melt temperature because it affecting the flows and bonding. If you want strong then you must use gloves so that it does not fail out of contaminations of dirt, skin oil, dust and excessive moisture combinations.

Vents should be placed in the mold and properly sized to allow the air release from the mold cavity when overmolding. It is uncommon in case there is improvement through advance technology a products viability and gain client satisfaction and also lower the production cost. 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. If the steps are followed the one injection molding process, the overmolding process helps throughput, waste reduction and production cost is lowered. When shutoff is going on the proper designed should be ensured so that the involved materials can lower the curling or delamination risk.

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