Inserts for tunnel gates
For gates that are to be cut and separated during part ejection, a tunnel gate (also called a submarine gate) is often the only design solution for injection molds with a single parting line. Furthermore, tunnel gates are especially well-suited for parts that must have a high-quality surface. For this purpose, the gate can be located on the side or back of the molded part. However, the most common type of tunnel gate encountered, often called a banana gate in the industry, is difficult to manufacture and frequently does not yield the desired results even after extensive experimentation.
Standardized inserts for tunnel gates, in either a round or rectangular shape, are now available from Hasco Hasenclever GmbH & Co KG, Lüdenscheid, Germany. According to the manufacturer, the gate inserts, which are produced by means of MIM (Metal Injection Molding), meet the demanding requirements regarding surface quality without which problem-free part ejection is not possible. The inserts (type: Z1050 and Z1060) are stocked in a number of sizes with various gate diameters. In order to optimize the gate vestige on the molded part and improve the surface quality of the part, the banana-shaped geometry can be adjusted to meet part-specific requirements. When performing maintenance, standardized gate inserts can be changed economically and quickly, reducing production interruptions associated with maintenance to a minimum.
Patents encourage innovation: Stay on the ball with the latest innovations in the plastics industry in our patents section.
Would you like to subscribe to our Newsletters on plastics technology and profit from the latest information?
You know the trade name but want to know the material manufacturer, type of polymer and delivery form? Search here!