Color inspection methods and standards for injection molded products

1. Color testing standards

a) The color of the rubber parts detected by the QA signer mainly takes the standard color plate and the engineering model as the standard. If the color of the engineering model and the standard color plate is different, the standard color plate shall prevail;

b) The color of the rubber parts detected by the QA staff in the machine room is mainly based on the machine position model;

c) The color of the rubber parts tested by the QA staff is mainly based on the engineering model and the latest effective board.

Second, the method of color detection of rubber parts is mainly visual inspection

Put the measured plastic part and the standard plate under the same light source, observe the color difference of the same measuring surface from the same angle, then swap the position of the plastic part and the standard plate, observe the color difference in the same way, and compare the color difference amount.

3. For plastic products with color matching requirements, compare the matching color to see if the color matching is OK.

4. How to deal with the deviation between the color of the plastic product and the standard color palette visually:

a) When the beer sign board is opened, if the signer's visual color is deviated and cannot confirm whether the production can be approved, the person in charge of QA should be notified to confirm whether the production is approved;

b) When the QA member of the random inspection team visually detects the color deviation, he should immediately notify the signer, and the signer or QA on duty shall confirm whether the production is approved or released;

c) When the QA staff in the computer room visually detects the color deviation, they should immediately notify the team leader, and the team leader or QA on duty will confirm whether the product is approved or released.

5. If it is difficult to confirm by visual inspection, use a color measuring instrument (color difference meter) to measure, and the comprehensive color difference can only be approved for production or release.