As with dip molding, a liquid or melted plastic is used in the injection molding process. Likewise a mold is a required element of the process. The melted plastic is injected into the mold at a high pressure and the mold itself is constantly cooled so that the heated material will adhere to the cavity walls forming the part. As the process finishes, the mold opens and ejection pins within the mold eject the newly formed part from the mold.
The mold or mold plates are actually two pieces or two halves of a whole. Each half contains at least one cavity and often more than just one. Molds are typically made of metal, usually steel or aluminum, but the choice is often based on the economics. Steel costs more, but lasts longer. Aluminum costs much less, but does not carry as long a lifespan. The size of the mold, the number of cavities, anticipated tool longevity all factor in on the cost of a mold.
Engineering and Prototypes
When we receive your specifications, our engineering staff utilizes their expertise to explore all possibilities in determining the best material and the best process for the project. Our engineers have designed parts ranging from our standard styles to more complicated engineered custom parts made to solve some of the most difficult problems. Within the scope of our injection molding process alone, we have developed thousands of parts. Our goal is to design your part in the most cost effective manner and to design it to deliver the highest level of performance required.
Not only do we have over 50 years of design experience, but we utilize some of the most sophisticated design and manufacturing software. We've grown in CAD CAM technology beginning in the early years of AutoCAD, then Pro-Engineer software. Collaborating with all our locations, we work seamlessly using PTC Creo and Siemens NX programs to seamlessly integrate the tooling fabrication process.
We are able to provide prototypes for engineering and marketing tests and, although technology has improved the precision-machined process used in forming molds, prototypes can still take time and usually come with a price.
A Case in Point
To meet the special design needs of our clients, we often develop custom injection molded tops and bottoms for our line of plastic tube containers.
Learn how we helped Enviroscent design and mold innovative closures for their unique packaging tubes.
Benefits of Injection Molding
Injection molded parts are often the best choice for complex, high volume products that require tight tolerances. Our engineers will work with you to design a plastic injection molded part with the lowest tooling cost in the industry.