Hot Edge Gate Nozzles Create Clean Gate Vestiges, Reduces Tip Wear

Melt Design Inc. (MDi), an innovator in the manufacture of hot runner systems and components for the injection molding industry, designed its Power Point Hot Edge Gate Nozzles to deliver multiple advantages for injection molders, chief of which is said to be excellent gate vestige. Another benefit? The nozzle tip will never wear out, the company claims.

Power Point Edge Gate Nozzles are ideal for molding fast-cycling, high-volume production parts such as thin-wall packaging applications and medical goods like pipettes, syringes and personal hygiene products.

Typically, parts are gated in the center, but when a sidewall gate is needed, MDi’s gate nozzles are ideal, for example, in the production of a flip-top cap. According to Panos Trakas, when using MDi’s product, the resin is injected away from all the moving mold components and shut-offs required to produce the hinges. The material flows through the nozzle, makes a 90º turn to enter the cavity, and as the part ejects the gate is seared cleanly off.

Trakas notes that because the edge gate tips sit in the opening and do not touch the steel at all, the tips will never wear out. Cold runner side gates are eliminated because these nozzles gate directly to the part.

Additionally, as with all of MDi’s Power Point nozzles, the edge gate nozzles are internally heated for more optimal heat profiles. The thermocouple, located at the nozzle tip, is replaceable, and a dual seal system and solid body construction prevents leakage, so the MDi nozzles and complete systems run for millions of cycles without failure or need for maintenance.

Power Point Hot Edge Gate nozzles are available as a single-body nozzle in small and medium sizes with one to four gates and as a three-piece replaceable tip assembly for higher temperature processing materials.