SPI Group

Request A Quote

Coloma, MI  |  269-849-3200

At SPI Group, we take pride in crafting high-quality injection molded plastics that meet the diverse needs of our customers across a range of industries. We specialize in transforming concepts into durable, precise components, leveraging our advanced molding technology and years of engineering expertise. From the earliest stages of product development, we work closely with our clients to refine designs, select the most effective materials, and ensure that every detail aligns with their performance and aesthetic requirements. Our capabilities extend beyond molding alone, as we manage the entire production process with a focus on efficiency, quality, and consistency. By integrating state-of-the-art manufacturing techniques with rigorous quality control, we deliver components that are not only reliable but also optimized for cost-effective production. Whether we are creating complex, custom parts or producing high-volume runs, we approach every project with the same dedication to innovation and precision. Through our comprehensive support, responsive collaboration, and commitment to excellence, we help our partners bring their ideas to life in the form of superior plastic products that stand out in the marketplace.

Injection Molded Plastics Power Pages

Overmolding

Overmolded Products

Many of the products used daily are made possible by producers and suppliers of rubber and plastic. These substances are robust, adaptable, and capable of practically any shape required for various industrial purposes…

Plastic Gears

Plastic Gears

A plastic gear is a toothed wheel made up of engineering plastic materials that work with others to alter the relation between the speed of an engine and the speed of the driven parts. The engineering plastic materials used in manufacturing plastic gears can be…

Plastic Injection Molding

Plastic Injection Molding

Plastic injection molding, or commonly referred to as injection molding, is a manufacturing process used in the mass fabrication of plastic parts. It involves an injection of molten plastic material into the mold where it cools and…

Reaction Injection Molding (RIM)

Reaction Injection Molding

Reaction injection molding, often referred to as RIM molding, is a specialized molding technique that utilizes two highly reactive, low molecular weight chemicals. These chemicals are combined and blended before being injected into a closed mold…

Plastic Overmolding

What is Overmolding

Plastic overmolding is a manufacturing process that involves combining two or more plastic materials to create a single, unified part. The process enhances the functionality, durability, and aesthetics of plastic components by…

Thermoplastic Molding

Thermoplastic Molding

Thermoplastic molding is a manufacturing process that works to create fully functional parts by injecting plastic resin into a pre-made mold. Thermoplastic polymers are more widely used than thermosetting…

Additive Manufacturing (AM)

Aspects of Additive Manufacturing
Additive manufacturing (AM) or additive layer manufacturing (ALM) is a three-dimensional printing process that produces components and parts by adding layers of material to fabricate physical renderings of computer designs. The multiple layers of additive

Blow Molding

Blow Molding Animation

Blow molding is a type of plastic forming process for creating hollow plastic products made from thermoplastic materials. The process involves heating and inflating a plastic tube known as a parison or preform. The parison…

Rotational Molding

Rotational Molding

Rotational molding, commonly referred to as “rotomolding”, is a plastic casting technique used to produce hollow, seamless, and double-walled parts. It uses a hollow mold tool wherein the thermoplastic powdered resin is heated while being rotated and cooled to solidify…

Polyurethane Molding

Polyurethane Molding

Polyurethane molding is the process of fabricating or manufacturing plastic parts by introducing a urethane polymer system into a tool or mold and allowing it to cure. Like any other type of plastic, the excellent processability…

Polyurethane Rollers

Polyurethane Rollers

Polyurethane rollers are cylindrical rollers covered by a layer of elastomer material called polyurethane. Depending on the application, the inner roller core is prone to scratches, dents, corrosion, and other types of damage…

Urethane Casting

Urethane Casting

Urethane casting is the process of injecting polyurethane and additive resins into a soft mold usually made of silicone elastomer. The casting process is similar to injection molding; injection molding differs by using hard, metal molds…

Plastic Molding Processes

Featured Industries