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	Home > Resources > Processing Guides, Secondary Operations, Joining Techniques and Troubleshooting Help > Troubleshooting - Compact Disc Molding

Troubleshooting - Compact Disc Molding

We have analyzed most of the processing defects that can occur during injection molding of compact discs (CDs). Look through the following catalogue to determine possible causes of processing defects. Most importantly, we suggest specific corrective actions that may help you stop processing defects.


		Overview Select a topic to find specific help. Please login to view document.



		Disc Too Thick Dimensional deviation Please login to view document.



		Disc Too Thin Dimensional deviation Please login to view document.



		Dishing Angle Too Large Dimensional deviation: chinese hat, propeller, dishing Please login to view document.



		Inner Diameter Too Large Dimensional deviation Please login to view document.



		Inner Diameter Too Small Dimensional deviation Please login to view document.



		Asymmetry Too High Fault noticeable when playing CD Please login to view document.



		Birefringence Too High Fault noticeable when playing CD Please login to view document.



		Block Error Rate Too High Fault noticeable when playing CD Please login to view document.



		HF Signal Too Low Fault noticeable when playing CD Please login to view document.



		Push-Pull Signal Too High Fault noticeable when playing CD Please login to view document.



		Radial Noise Too High Fault noticeable when playing CD Please login to view document.



		Black Specks Fault visible on metallised CD Please login to view document.



		Brown Discoloration or Brown Streaks Fault visible on metallised CD Please login to view document.



		Bubbles Fault visible on metallised CD Please login to view document.



		Flow Marks From Centre Fault visible on metallised CD Please login to view document.



		Record Grooves Fault visible on metallised CD Please login to view document.



		Specks Fault visible on metallised CD Please login to view document.



		Streaks Due To Air Fault visible on metallised CD Please login to view document.



		Streaks Due To Moisture Fault visible on metallised CD Please login to view document.



		Streaks Due To Overheating Fault visible on metallised CD Please login to view document.



		Surface Imperfection Fault visible on metallised CD Please login to view document.



		White Streaks Fault visible on metallised CD Please login to view document.



		Flow Lines Fault visible under polarised light Please login to view document.



		Optical Fault Fault visible under polarised light Please login to view document.



		Radial Streaks Fault visible under polarised light Please login to view document.



		Ring Fault visible under polarised light Please login to view document.



		Broken Disc Processing error Please login to view document.



		Brown Patches Processing error Please login to view document.



		Cold Slug Processing error Please login to view document.



		Disc Sticks To Mirror (fixed side) Processing error Please login to view document.



		Disc Sticks To Punch (stamper side) Processing error Please login to view document.



		Drooling Nozzle Processing error Please login to view document.



		Flash At Outer Edge Processing error Please login to view document.



		Rough Centre Hole Processing error Please login to view document.



		Runner Stays On Disc Processing error Please login to view document.



		Sprue Break Processing error Please login to view document.



		Uneven Cavity Filling Processing error Please login to view document.