When To Use Injection, Insert, or Overmolding Processes

When you need plastic or rubber parts made for your business, there are a few different processing options. Clark Rubber and Plastic uses plastic extrusion processes to help you get the parts you need. Here are a few times when you should use injection, insert, or overmolding extrusion processes: 

The Injection Process

Injection molding is a process in which plastic is injected into molds to create a part or product. It can be used for mass production of products in several industries. This is a good option when you need precision measurements for a part and only need one type of material to make it. Some examples of parts created by this type of plastic extrusion include:

• Automotive components like dashboards or bumpers
• Household items like bottles, toys, and plastic containers
• Housings for electronic wiring
• Kitchenware like plastic mixing spoons

The Insert Process

The insert process happens when an object is placed into the mold, and then plastic is injected around it. Clark Rubber & Plastic uses this process for mass production of items. It is used to add plastic to metal or other plastic components to make them stronger. We use this process for medical tools like syringes, electronics connectors that use pins or wires, and metal mechanical components that are coated with plastic.

The Overmolding Process

Overmolding occurs when you pour the melted plastic material over another molded object to help protect it. While the other two processes are used for mass production, this type focuses on one or two items at a time. Since one plastic type is poured over another, you can use multiple colors or materials together to create an item specific to your business. Here are some reasons you may use overmolding:

Soft Touch Surfaces

If your industry needs tools with grips to protect the equipment from wear and your hands from damage, the overmolding process should be used. Overmolded grips can reduce hand fatigue for jobs that require repetitive actions. Grips also help users keep ahold of items when they’re greasy or wet.

Vibration Dampening

If you need to use heavy machinery, overmolding helps with vibration dampening. The plastic layer makes it harder for parts to come loose from constant movement. Plastic also makes it easier to hold controls while the machinery is working. If your machinery is loud when in use, the vibration dampening can reduce the noise and provide a more pleasant work environment. 

Sealing Properties

Overmolding helps to provide a sealed surface on products that need chemical resistance. This sealing property is also used to make waterproof materials that keep water or other fluids from leaking. Medical devices, industrial pipes, and electronic industries benefit from this type of sealing. 

Using Plastic Extrusion for Your Products

Clark Rubber & Plastic offers plastic extrusion services for many products in industries like construction, automotive, home appliances, and more. Once you have developed your product plans, wecan manufacture a prototype to make sure it meets your expectations. We will then confirm we’re using the appropriate extrusion molding process for your parts. Contact us today to learn more about our plastic molding services.