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Plastics Mould & Production Design

Content

1. Mold design chapter

1-1 Gate method

1-2 Guidelines for steel materials and mold life

1-3 Guidelines for steel material selection intended for plastic injection

materials

1-4 Comparison table of International Standards for steel materials of mold

1-5 Heat treatment method of steel materials

1-6 General data on steel materials used for mold making

1-7 Computation of deflection on moveable side

1-8 Computing necessary thickness of side walls of rectangular shaped

cavities(if bottom surface is integrated)

1-9 Computing necessary thickness of side walls of rectangular shaped

cavities(if the bottom surface is separated from the others)

1-10 Computing necessary thickness of side wall of cylindrical cavities

1-11 Mold temperature control method

1-12 Cross sectional shape design for “runners”

1-13 Guideline for designing tunnel gate

1-14 Head shape design for pinpoint gate

1-15 Runner lock structures for Pinpoint gate

1-16 Polishing, finishing of Plastic mold parts

1-17 Outline for food container mold

1-18 Outline for medical utensils mold

1-19 Outline for blow molding

2. Plastic injection materials chapter

2-1 predrying condition of plastic injection materials

2-2 tables showing material properties of plastic injection materials

2-3 trouble shooting for rejected works (bubbles)

2-4 trouble shooting for rejected works (sink mark)

2-5 trouble shooting for rejected works (flow mark)

2-6 trouble shooting for rejected works (burn)

2-7 trouble shooting for rejected works (silver streak)

2-8 trouble shooting for rejected works (defective brightness)

2-9 trouble shooting for rejected works (short shots)

2-10 injection materials and purpose of usage (polyamide)

2-11 injection materials and purpose of usage (polyacetal)

2-12 injection materials and purpose of usage (polycarbonate)

2-13 injection materials and purpose of usage (thermoplastic elastomer)