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Plastic Closure Designs1) Malloy (referenced)2) GE Design Guide (PDF)

Table X or Figure Y

TEC 316Dr. Lou Reifschneider

GE

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GE

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Clamshell Assembly

Options

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.45.

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Self tapping screw must have clearance through boss and then a blind pilot boss.

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.46.

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Cantilever snap molded with two-plate mold

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.32.

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CantileverSnap

Closure Options

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.14.

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Deflection sequence for a U-shaped cantilever snap

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.20.

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Cantilever snaps to hold components: two designs

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.21.

Locating feature for cover

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GE

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GE

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GE

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Schematic of Ultrasonic

Welder

Plastic Part Design for Injection Molding by Robert A. Malloy, Fig. 6.95.

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GE

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GE

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GE

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GE

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GE

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GE

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GE

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GE

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GE

Vent holes made WITHOUT side action.

KISS-OFF

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GE

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GE

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GE