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Losang

Injection Molding

  • Workmanship Standard

Below we have defined the minimum performance requirements for deliverable goods to customers.

● Ejector Pin Marks: Ejector pin protrusions and depressions flush to .010"

● Flash - Excess Plastic
    Parallel to parting line = .005" x .015" long
    Core flash = .005" x .015" long
    Perpendicular from a core pin = .005" x .015" long

● Gate vestige
    Tunnel Gates = flush to .010"
    Hot Tips = flush to .010"
    Tab Gates = flush to .010"
    Pin Gates = flush to .010"
    Fan Gates = flush to .010"

● Color Streaks: Color streaks visible at 18" to the unaided eye. - Not Acceptable

● Contamination - Pollution of grease, oil antifreeze on parts. - Not Acceptable

● Delaminating - The splitting of plastic material along its layers. - Not Acceptable

● Flow Lines/Knit Lines - A mark on parts where two flow fronts meet. Acceptable if not visual part or specified.

● Gas Burns - Thermal decomposition through discolorization, distortion or destruction. - Not Acceptable

● Sink - Depression or dimple on a molded part. May not exceed 20% of the adjacent molded part.

● Specks - Specks visible at 18" to the unaided eye. - Not Acceptable

● Splay - Lines found in parts after molding. - Not Acceptable

 
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