SPI Industries
Injection Molding (574) 272-3733
Blow Molding (269) 849-3200

custom • design • engineering • molding

Plastic Product Manufacturing Michigan and Indiana

plastic-product-manufacturing-michigan-and-indiana

SPI Industries has been a leader in the Midwest custom molding and plastic product manufacturing scene since the 1950s. Our beginnings revolved around injection molding and high quality tool design and building. Over time we have expanded our capabilities to include custom blow molding, product assembly and customer fulfillment in South west Michigan. We are equipped to handle the entire manufacturing process from start to finish. It begins by working closely with customers to define the part specifications of our clients, based on the product requirements. We pride ourselves in delivering our customers Quality Parts.

Our experience in a wide range of plastic product manufacturing processes, helps reduce time and money spent generating designs and test prototypes. We can help facilitate the design and manufacturing of your product from concept to delivery. We pride ourselves in delivering our customers Quality Parts, On Time.

SPI has a long history of being a “Go To” custom blow molder in southern Michigan and custom injection molder in northern Indiana. Our experience as custom molders, has given us a broad knowledge base with many resins and processes that most other blow molders and injection molders wouldn’t even consider. This allows us to succeed at projects where others have failed. SPI can also let you know when there may be a better approach that we simply do not have the capability to provide. We pride ourselves on delivering our custom molding customers Quality Parts, On Time, At a Fair Price.

Why Choose Injection Molding?

Injection molding is the most commonly used type of plastic product manufacturing in use today.  The process can be used to manufacture items that consist of over 18,000 different types of plastic materials, such as thermoplastics and some types of thermosets and elastomers.

The injection molding process has existed since 1872; the first products manufactured by this process were billiard balls made by John and Isaiah Hyatt. However, injection molding can be used to manufacture almost any solid or open-ended object, from hair combs to the dashboards of cars.  The plastic injection molding process consists of injecting a molten plastic material into a metal mold and letting it cool and dry.  Designing molds for injection molding requires a lot of expertise; a mold must be designed so that the part will be of uniform thickness and allow it to be easily ejected from the mold.  SPI Industries is experienced in designing molds for injection molding. We will sample the mold and make minor adjustments until they are just right for manufacturing before we begin mass producing your products.

Often creating prototype parts will help in both part design as well as tool design. Having a prototype part for more complicated designs will generally help to reduce the amount of adjustments during the sampling process.

Why Choose Blow Molding?

In contrast to injection molding, blow molding is the process used for making hollow plastic parts.  It is also required when making items that vary in thickness in different parts of the object, such as gas tanks.  Blow Molding is commonly used for higher volume parts that are currently being roto-molded, due to a faster cycle time when compared to roto-molding. However, the nature of blow molding usually has longer cycle times and more processing variation than injection molding.

The SPI Industries Difference

Here are some reasons why SPI Industries should be your first choice for plastic molding manufacturing in the Great Lakes region

  • We can handle all steps of the design and manufacturing process, which will save you time and money.
  • We are equipped for both injection molding and blow molding.
  • We have decades of experience and keep up with the latest technological advances in plastic product manufacturing.
  • We are familiar with the requirements for plastic products in many different industries.
  • We can do small runs of products, large runs, or anything in between.
  • Because of the amount and variety of equipment we have in house, we can help bring your ideas to fruition in a relatively short time frame.

Quality Parts. On Time. At a Fair Price.