The primer is not completely dried in the curing process, and the position that is not dried after vacuum plating, and the paint will be scraped off by hand
1. UV energy is too weak
2. The product structure is special and there are too many dead corners
3. Fault of UV machine
1. Confirm whether the number of strong and weak lamps and light energy of UV furnace are consistent with the operation instructions
2. Try to confirm before production and fix production parameters before production
3. Regularly check whether the equipment is inspected and maintained as required, and confirm the maintenance records
Poor etching occurs on the surface of products with etching. Compared with the standard vacuum plating sample, the etching effect is not obvious
1. Primer spraying is too thick
2. Inappropriate primer selection
3. The product design is too shallow in terms of etching
1. During the production process, confirm whether the spraying times and spray gun distance are consistent with the operation instructions, and compare with the standard sample for confirmation during the production process.
2. The etched products are generally thin coated , which shall be tested and confirmed before production
3. Test and confirm before production, and ensure that the etching effect is consistent with the standard sample.
After the primer is cured by UV, the coating surface is dry, the interior is not completely dry, and the uncured part is milky white
1. The primer coating is too thick, and oil accumulations occur in some parts.
2. The standing time after the primer coating is too long
1. During the production process, confirm whether the spraying times and spray gun distance are consistent with the operation instructions, and compare with the standard sample for confirmation during the production process.
2. Supervise the spraying of UV primer. UV curing is required within 6 minutes after spraying
After spraying the UV base or coating the product, the fingerprints that are felt by hand and flow down cannot be wiped.
1. The product is not firmly clamped, and the hands touch the product after spraying the UV background
2. The handprints on the material surface are not wiped clean
1. During fixture, confirm whether the operation method is consistent with the operation instruction. After clamping, confirm the product status and the rationality of the fixture.
2. During material pre-treatment, confirm whether the operation method is consistent with the operation instruction
Some parts on the surface of the plating layer is white or blue, which is obviously different from that of the normal plating layer
1. Primer is not dry
2. The baking time of the top coat is too long
1. Confirm whether the actual parameters of the UV furnace are consistent with the operation instructions before production, and confirm the product quality after UV curing
2. When baking the finish coat, confirm whether the parameters set by the oven are consistent with the requirements of the operation instructions
More in the next chapter. Follow LKKER SCM Linkedin Page for chapter updates.
LKKER SCM Co., Ltd is a member company of LKKdesign Group, 100% owned by LKKdesign Group which is founded in 2004. LKKER SCM is a one-stop product development and customized supply chain solution provider. We offer services from design to manufacturing covering industrial design, mechanical design, electronics engineering, rapid prototype, tooling, pilot production, and mass production. LKKER SCM has been recognized as Indiegogo Recommended Prototyping & Manufacturing Expert since 2019.
LKKdesign Group is a regular product design award winner worldwide. Being the largest and top-tier design house in China, LKK has won 521 design awards since company establishment. LKKdesign is recognized as the National Industrial Design Center by The Ministry of Technology since 2013. Key investors of LKKdesign include Fortune Capital, China Culture Industrial Investment Fund, and Green Pine Capital Partners.
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