What is Injection Blow Molding?

Injection blow molding is a specialized plastic manufacturing process used to create hollow, seamless containers. In this method, a plastic preform is first injection molded, creating a precursor with a neck finish and a hollow center. The preform is then transferred to a blow molding machine where it is heated and inflated with compressed air to take on the shape of the final container’s mold cavity.

The injection blow molding (IBM) process produces billions of plastic containers each year, ranging in size from 1 ml to 2 liters. These containers meet exacting standards of consistent weight, volume and tolerance, and are popular for pharmaceuticals and toiletries to automotive and household use.

IBM Process & Bottle Characteristics

• Virtually no scrap
• No trimming
• Virtually no waste
• Minimal auxiliary equipment required
• Exact neck dimensions
• Thick, even walls
• Parting lines nearly invisible
• Variety of different finishes are possible

Typical Products For Injection Blow Molding:

Advantages and Disadvantages of Injection Blow Molding: