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Injection Molded Products – What You Need to Know

Companies routinely turn to our Rubber & Plastics division for all their injection molded needs. We’re known for our: 

  • Responsiveness 
  • Customer service 
  • Design and engineering expertise 
  • Ability to manufacture a wide range of products 
  • Quality  
  • On Time Delivery 
  • Value 

Key advantages of injection molding: 

  • Very fast cycle times 
  • Less environmental impact 
  • Low scrap 
  • Tighter dimension tolerances 
  • High precision parts
  • High volume production
  • Small, precise parts

We can handle diverse needs for a wide range of industries that routinely rely on our expertise. Here are just a few: 

  • Medical 
  • Automotive (OEM and Aftermarket) 
  • Military 
  • Agricultural 
  • Sanitation wear 
  • Sports 
  • Power Tools/Hand Tools 

Injection Molding for Rubber and Plastic Parts

Injection molding is a manufacturing process for producing parts by injecting raw material into a mold cavity. The mold cavity is the negative image of the desired part, and the raw material fills the cavity and solidifies to form the part. Injection molding is used to produce a wide variety of parts, from small plastic toys to large automotive components. It is also used to produce rubber parts, such as gaskets, seals, and hoses. 

The injection molding process for rubber and plastic parts is very similar. However, there are some key differences. For example, rubber injection molding requires higher pressures and temperatures than plastic injection molding. This is because rubber is more viscous and has a higher coefficient of thermal expansion. 

Overview of the Injection Molding Process 

The process can be broken down into the following steps: 

  1. Mold preparation: The mold is cleaned and lubricated. 
  1. Material preparation: The rubber or plastic material is heated and melted. 
  1. Injection: The raw material is injected into the mold cavity under high pressure. 
  1. Cooling and curing: The liquefied material cools/solidifies in the mold cavity for plastic and heats/cures for rubber. 
  1. Ejection/Removal: The finished part is ejected or removed from the mold cavity. 

Materials

There are a wide variety of rubber and plastic materials that can be injection molded. 

For example, neoprene works well in many general applications. Silicone is ideal for food processing products and other applications like medical equipment. EPDM is a synthetic rubber known for its superior resistance to heat, ozone, steam, and weather. Products made of FKM have superior heat and low-temperature resistance. 

Plastic resins include: 

  • ABS
  • Acetel
  • Acrylic 
  • Nylon 
  • HDPE 
  • LDPE 
  • Polycarbonates 
  • Polypro 
  • Polystyrene 
  • PVC 
  • TPU 
  • TPV 

We can accommodate a wide range of requests. We handle custom shapes, sizes, colors and physical properties. We also offer exceptional design and engineering assistance. 

Our offerings are specifically tailored to satisfy each customer’s unique Operational and Original Equipment Manufacturer (OEM) requirements. We implemented a Quality Management System and are certified to the ISO 9001 standards. 

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