Plastic mold & Die design(Department Elective - II) — Summer 2019

What is Runner Layout? What are the factors to be considered for the design of Runner layout?

Explain the Fundamental principles of mold design.

Explain how cooling of Shallow cores can be achieved.

What are the different parts of Molding Tool?

The optimum size of Gate will depend on which factors.

Explain the Design considerations of Diaphragm Gate.

Explain different types of Runners and Their efficiencies with neat sketches.

What is O-Ring and what are its functions.

Explain how runner Size is calculated.

Explain Heat Rod/Thermal pin cooling system with neat diagram and explain how heat transfer capabilities of a heat-rod can be obtained.

Name different types of heat treatment techniques.

What are the factors to be considered while designing a Runner?

Explain Electroforming technique with neat sketch

Explain different types of zones in Extruder screw.

Explain typical compression molding cycle with neat diagram.

Explain a. Valve ejection system b. Sleeve ejection system c. Pin Ejection System d. Stripper plate ejection system with neat sketches.

What are the advantages of Compression molding?

What are the factors affecting in calculation of loading well height?

Explain A. Semi-Automatic Open Flash Mould B. Semi Automatic Fully Positive Mould C. Semi Automatic Landed Positive compression Mould With Neat Diagrams.

What are the disadvantages of Transfer Molding?

Explain typical Transfer Molding cycle with neat diagram

Explain pot and plunger type compression mold with neat sketches.