TAILIEUCHUNG - Scientific injection molding

In the hot runner mold, the runners are kept hot in order to keep the molten plastic in a fluid state at all times. This is a “Runnerless” molding process and hence the name. Hot runner molds are similar to the three plate molds, except that the runner section of the mold is not opened during the cycle. | Scientific Injection Molding Vishu H. Shah Consultek Consulting Group Part II Hot Runner Runnerless Molds In the hot runner mold the runners are kept hot in order to keep the molten plastic in a fluid state at all times. This is a Runnerless molding process and hence the name. Hot runner molds are similar to the three plate molds except that the runner section of the mold is not opened during the cycle. The heated runner plate Manifold is kept insulated from the rest of the relatively cooler mold. No runner to separate from the molded parts No runners to either dispose of or regrind and reprocess Less possibility of contamination Hot drops carry consistent heat at processing temperature directly into the cavity Balanced Melt Flow Lower cycle cooling time - cooling time not runner dependent No robotics or automation needed for runner removal Possibly lower injection pressure No sprue runner sticking problems Cleaner molding environment Hot Runner Hot runner system in the mold is simply an extension of the barrel Hot Runner is not a melting device and should not be used as .

• Cơ khí - Chế tạo máy
• Scientific injection molding
• Hot runner mold
• Hot runner systems
• Injection molding tooling
• Master unit die
• Material selection considerations