Mold Maintenance Technician Interview Questions and Answers

Types of hot runners include open gate, valve gate, and hot tip.

• Open gate hot runner system allows the plastic to flow directly into the mold cavity without any restriction.

• Valve gate hot runner system uses a mechanical valve to control the flow of plastic into the mold cavity.

• Hot tip hot runner system has a heated nozzle that injects the plastic directly into the mold cavity.

• Other types include insulated runner and internally heated runner systems.

Injection moulds are tools used in the manufacturing process to produce parts by injecting material into a mould.

• Injection moulds are used in the manufacturing industry to create parts by injecting material into a mould cavity.

• There are different types of injection moulds such as cold runner moulds, hot runner moulds, and three-plate moulds.

• Each type of injection mould has its own advantages and disadvantages depending on the specific requirements of the part being produced.