Advantages of 2 shot Overmolding
Overmolding is being shifted to today by many manufacturers. Overmolding is essential to them because it helps them add value to their product line. Overmolding improves the functionality, performance, and also aesthetics. In addition to that, overmolding lower the total production costs of their products these days. Overmolding involves two processes and they are one-shot and two-shot processes. Overmolding is a process that bonds a thin layer of thermoplastic elastomer to the substrate of products.
When products go through the process of overmolding, an outer layer is created on them. The exterior layer is the one that produces the soft touch grip that is found with many products. several products such as toothbrushes and even modems can go through this process of overmolding. Overmolding offer many benefits to products apart from improving their quality. Other benefits that overmolding offer to products are like shock and vibration reduction dampens sound, provision of electrical insulation, increased chemical resistance and also a barrier to oxygen and moisture.
The previous injection molded substrate can be added with another material that is injection molded through a process called 2 shot overmolding. The process of 2 shot overmolding is applied on electronics such as modems and batteries. A more durable engineering thermoplastic is used when the overmolding is being applied to such products. Chemical resistance, bio-compatibility and also superior abrasion are some of the things that are added on electronics when they undergo the process of overmolding. It combines the benefits of low pressure molding with conventional injection molding when 2 shot overmolding is applied on products. When this process is being applied to create a premolded device low pressure is the that will be started with.
Products are safely encapsulated when the products are premolded. A high pressure injection molding process can be used after that process. This process will seal and protect the electronics with a rugged thermoplastic outer layer. Electronics are some of the products that enjoy many benefits of 2 shot overmolding. Solvent resistance and biocompatible overmolding materials that should be rated by FDA are examples of other stuff that are needed by several medical and consumer electronic applications. Such electronics are manufactured by manufacturers who use a 2 shot approach.
Protection is provided by the overmolding process to electronics. The overmold is then finished with materials that need customers. The importance of first low pressure molding shots is enjoyed by manufacturers because it helps them confirm their gating location. It is also important because it prevents things such as trapped air and unsightly flow fronts. Electronics such as batteries are enjoys improved heat and pressure distribution when the first low pressure molding shot is applied.