Injection molding can create some of the most complex plastic components in the manufacturing space. It allows for tight tolerances, detailed geometries, material combinations, and cost-effectiveness at high volumes.
For as impressive as injection molding is, one of the things it can’t do is join other molded plastic components into one singular shape. That’s where ultrasonic welding services come into play. Ultrasonic welding is a precise operation that joins components together quickly, cleanly, and doesn’t require fasteners or adhesives, making it a true singular piece.
Triad Plastic Technologies discusses the role of ultrasonic welding services with injection molding projects and how it can enhance your component in the long run.
Why Ultrasonic Welding Services are Used for Injection Molding Projects
Injection molding is a complex plastic manufacturing operation where melted plastics fill the shape of a mold and are ejected and cooled. Designs and shapes can be exceedingly complex and part tolerance can be tight. But when other plastic components need to be added to a piece, ultrasonic welding can be used.
Manufacturing companies rely on ultrasonic welding because of the speed, repeatability, and clean finish that it provides both customers and the components themselves. Unlike traditional welding on a metal material, there are no weld lines that can impact the visual of the product. As the heat source is concentrated to a finite spot, the surrounding plastic features little to no compromise. This not only aids in part appearance, but also part dimensions.
Additionally, ultrasonic welding happens in seconds. It does not demand or require any curing time, and it avoids any screws, solvents, or glue that not only increase prices, but can also contaminate the part.
Design Considerations and Material Limitations
If your team knows that your project is going to involve ultrasonic welding, there are a few considerations to make design wise to ensure the best achievable result not only the secondary service, but for the injection molding production as well.
The biggest focus point should be on the joint designs and part tolerance capabilities. Joint geometry should be considered in your design as performing ultrasonic welding on flat surfaces can disrupt the bonds of the formed plastics. Whereas, performing the welding on joints, alignment of the two joined parts is more precise, and it hides the weld seam while containing remnants of melted material.
The best types of materials to withstand the treatment from ultrasonic welding are thermoplastics, the most common material selection for injection molding operations.
Practicality in Production
From a manufacturing standpoint, ultrasonic welding services play a practical role for the injection molder. When this service is offered, especially in-house, it allows for more complete program control and better assembly services. This also allows for faster overall production cycles and improved throughput for high-volume programs.
In turn, this benefits customers as they can only focus on one manufacturing company when services are offered in house as handoffs between manufacturers are eliminated.
Considering Ultrasonic Welding Services for Your Injection Molding Project? Contact Triad Today
Triad Plastic Technologies is one of the premier injection molding companies in the United States through our continuous investment in state-of-the-art technology. While equipment plays a large role in our services, it’s the people on our team who truly make the difference.
Ultrasonic welding services are one of our premier value-added operations performed by one of our skilled technicians with the direction of our engineers and the design itself. Triad believes in quality. Not just in the components that leave our facility, but in our operations themselves. Our ISO 9001 certification is more than a branding tool, but a true reflection of what quality management means to us.
When your injection molding projects require ultrasonic welding operations, contact Triad today.