For specialty finishing requirements, WADAL Plastics provides a range of secondary operations. Highlights of each service are included below, as well as examples of how each one has been applied to recent projects.
Sonic Welding and Spin welding/Assembly
The sonic welding process allows thermoplastic materials to be joined. The process is fast, economical, clean and requires no consumables.
Examples of sonically welded parts:
- Staged filter components for automotive fuel delivery system - two components molded in acetal are welded together on a semi-automatic welder equipped with a rotary table. (1,400,000 parts per year)
- Operator assembly for casement window - left and right covers are molded in a custom color. Assemblies are sonically welded, encapsulating several steel components including a worm gear, operator arm and gear assembly.
Additional types of assembly-related operations include snap-fits and loading of molded parts into magazines.
Heat Staking Heat staking uses heat and pressure to deform a plastic stud or boss to capture another part.
Example of heat staking process:
- Handle for casement operator - two parts are molded, a handle and knob. The knob is inserted into the end of the handle and a standing pin is deformed, allowing the knob to act as a "free wheeling" unit.
Our secondary machining operations include drilling and tapping. Application of drill and tap techniques:
- Hinge for commercial refrigeration unit - mounting holes are drilled and tapped.
- Head for pole pruner - molded hole for mounting screw is tapped.
- Handle for casement operator - operator handle is drilled and tapped; set screw is installed.
Decorating
We currently offer plating as a decorating option. Pad printing, hot stamping and painting are services under consideration and may be added in the future.
Customized Packaging
Once your part is complete, WADAL Plastics can develop and service your packaging requirements, such as sealed poly bags and custom labels.