The Drader Injectiweld is a plastic welding apparatus that thermally bonds plastic together with a strong weld. Drader classifies its welder as an Injection welder because it injects a shot of molten welding rod into the plastic parent material. The quality of the weld is very high even when people do not have a lot of experience. The result approaches 100% weld strength without the use of hot air or gas.

View our Weld Strength Analysis report

The Injectiweld has an automatic feed system that enables a person to use the welder with one hand. Welding rod is automatically drawn into the gun by a set of rod driver wheels. The rod is fed into the connecting tube where it is nipped off, packed into the barrel, and melted. Allowing the user a free hand to hold the parent material gives Drader an advantage over other welders. In short, Drader is easier to use than other welders.

Benefits: As explained elsewhere, most welders use hot air to preheat the plastic. The Injectiweld is different. It uses radiant heat to melt the plastic. Drader's interchangeable tip is heated to the optimal weld temperature of the parent material. When placed onto the plastic, the tip starts to melt the plastic; preparing it for an injection shot. Since the outlet of the tip submerges into the parent material, scraping off the surface oxidation is normally not necessary and people save time by skipping this time consuming step. Virtually no oxidization takes place during the Drader welding process unlike the processes that use hot air. It is important for the tip to maintain contact with the parent material so that the plastic plasticizes in the proper manner.

Drawbacks: The Injectiweld costs more money than hot air sticks, but normally there is very little competition between the two types of systems. If you are consistently welding thermoplastics thicker that ½” then the Injectiweld might not be the perfect system for you . Consider a Hot air Extrusion welder for it’s larger weld bead size.

Materials that can be welded with the Injectiweld

The following table lists materials commonly welded with the Injectiweld. While many thermoplastics are weldable with the Injectiweld, some resins have not been tested extensively and therefore do not appear on the following list. Note the weld temperatures are specific to the Injectiweld system.

• Note: See HYPERLINK TO Special Treatment for Certain Plastic Materials section.

Materials that cannot be welded with the Injectiweld

Thermoset plastics are not weldable because they do not melt when heat is applied to them. Examples: F.R.P. (Fiberglass), Bakelite, Epoxies, Phenolics, Melamine, etc…

PVC-U / PVC-P – PolyVinylChloride (Rigid / Flexible). The lowest temperature setting of the Injectiweld is too high for PVC-U or PVC-P. The material will burn inside the welder’s barrel. This will release chlorine gas, which is harmful to the operator’s health and will damage the aluminum parts of the welder.

PMMA – PolyMethyl MethAcrylate. Using this material inside the Injectiweld may cause the Piston Rod to become stuck. When PMMA is sheared, it exhibits very sharp edges around the circumference of the breakage. These sharp edges may prohibit the Piston Rod from moving backwards.

PFA – PerFluoro Alkoxy The weld temperature for this material exceeds the maximum temperature setting.