{"id":2564,"date":"2026-06-17T16:48:54","date_gmt":"2026-06-17T08:48:54","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2564"},"modified":"2026-07-01T09:26:40","modified_gmt":"2026-07-01T01:26:40","slug":"painting-coating","status":"publish","type":"process","link":"https:\/\/www.jcinjectionmolding.com\/vi\/service\/painting-coating\/","title":{"rendered":"S\u01a1n & Ph\u1ee7"},"content":{"rendered":"
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H\u1ec7 th\u1ed1ng S\u01a1n & Ph\u1ee7 v\u00e0 Hi\u1ec7u su\u1ea5t Ch\u1ee9c n\u0103ng<\/h2>\n

Ph\u1ee7 c\u00e1c l\u1edbp s\u01a1n phun d\u1ea1ng l\u1ecfng hi\u1ec7u su\u1ea5t cao l\u00ean nh\u1ef1a \u0111\u00fac gi\u00fap t\u0103ng c\u01b0\u1eddng c\u1ea3 c\u1ea3m gi\u00e1c cao c\u1ea5p khi ch\u1ea1m v\u00e0 \u0111\u1ed9 b\u1ec1n h\u00f3a h\u1ecdc\/UV. Ch\u00fang t\u00f4i h\u1ed7 tr\u1ee3 nhi\u1ec1u h\u1ec7 th\u1ed1ng ph\u1ee7 ti\u00ean ti\u1ebfn:<\/p>\n\n\n\n\n\n\n\n
C\u00f4ng ngh\u1ec7 ph\u1ee7<\/th>\nM\u00f4i tr\u01b0\u1eddng ph\u1ee7 \u0111i\u1ec3n h\u00ecnh<\/th>\n\u0110\u1ed9 d\u00e0y & \u0110\u1ed9 c\u1ee9ng<\/th>\n\u01afu \u0111i\u1ec3m ch\u00ednh & \u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
PU m\u1ec1m m\u1ea1i<\/td>\nS\u01a1n \u0111\u1ed3ng tr\u00f9ng h\u1ee3p Polyurethane Velvet<\/td>\n15 \u2013 25 \u00b5m \/ HB \u0111\u1ebfn F<\/td>\nMang l\u1ea1i c\u1ea3m gi\u00e1c m\u1ec1m m\u1ea1i nh\u01b0 nhung, \u1ea5m \u00e1p v\u1edbi \u0111\u1ed9 b\u00e1m tuy\u1ec7t v\u1eddi. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho tay c\u1ea7m ch\u01a1i game, \u1ed1p v\u00f4 l\u0103ng \u00f4 t\u00f4 cao c\u1ea5p v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng.<\/td>\n<\/tr>\n
L\u1edbp ph\u1ee7 trong su\u1ed1t \u0111\u00f3ng r\u1eafn UV<\/td>\nVecni c\u1ee9ng h\u00f3a b\u1eb1ng tia c\u1ef1c t\u00edm Acrylate<\/td>\n10 \u2013 15 \u00b5m \/ 2H \u0111\u1ebfn 4H<\/td>\nB\u1ea3o v\u1ec7 ch\u1ed1ng tr\u1ea7y x\u01b0\u1edbc v\u00e0 m\u00e0i m\u00f2n c\u1ef1c cao, kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00f3a ch\u1ea5t v\u01b0\u1ee3t tr\u1ed9i v\u00e0 gi\u1eef \u0111\u1ed9 b\u00f3ng cao. \u0110\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u00f4 t\u00f4 v\u00e0 th\u00e2n \u0111i\u1ec7n tho\u1ea1i.<\/td>\n<\/tr>\n
S\u01a1n kim lo\u1ea1i & g\u1ed1m<\/td>\nS\u01a1n ph\u1ee7 Sol-Gel \/ pha h\u1ea1t nh\u00f4m<\/td>\n20 – 30 \u00b5m \/ H to 2H<\/td>\nDelivers authentic anodized metal or ceramic feels, completely covering weld lines. Used for cosmetic home appliances and auto exterior grilles.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Substrate Surface Energy & Paint Adhesion Compatibility<\/h2>\n

Molded plastics possess different surface energies (dyne levels). Ensuring the substrate dyne level is higher than the paint’s surface tension is critical for adhesion:<\/p>\n\n\n\n\n\n\n\n
Polymer Substrate<\/th>\nNatural Surface Energy<\/th>\nAdhesion Compatibility & Pre-Treatment Needs<\/th>\n<\/tr>\n<\/thead>\n
ABS \/ PC \/ PC-ABS<\/td>\nHigh (38 – 42 mN\/m)<\/td>\nExcellent. Polar molecular structures support direct chemical adhesion of PU and UV paints without special flame pre-treatment.<\/td>\n<\/tr>\n
PP \/ PE (Polyolefins)<\/td>\nLow (29 – 31 mN\/m)<\/td>\nPoor. Non-polar chains require active flame, corona, or plasma treatment (raising dyne levels above 38 mN\/m) and special chlorinated primers.<\/td>\n<\/tr>\n
POM (Acetal) \/ Nylon (PA)<\/td>\nMedium to Low (33 – 36 mN\/m)<\/td>\nModerate. Crystalline slide-grade polymers have low surface friction, requiring surface acid etching or adhesion-promoter primers before coating.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Molding Analysis: Coating Adhesion & Surface Activation Matrix<\/h2>\n

Securing flawless paint adhesion and bubble-free coatings requires deep-rooted expertise in polymer chemistry and sterile spray processing:<\/p>\n

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Mold Release Residue Mitigation<\/p>\n

Silicone-based mold release agents used during injection molding form an invisible hydrophobic barrier that completely destroys paint adhesion, causing severe peeling or “fisheye” defects. Jucheng\u2019s production lines enforce the use of silicone-free release agents, or subject parts to a chemical solvent wash before they enter the spray line.<\/p>\n<\/div>\n

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Low Surface Energy Activation (Flame & Corona)<\/p>\n

For non-polar polymers like PP (Borealis RF365MO), we implement automated flame or corona treatment. This process oxidizes the outer polymer skin, creating active polar sites (such as carbonyl and hydroxyl groups). This raises surface energy above 38 mN\/m, ensuring a permanent chemical link with the paint layer.<\/p>\n<\/div>\n

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Class 10,000 Dust-Free Spray Booths<\/p>\n

Any microscopic airborne dust particulate will settle on wet paint, causing visible inclusions and ruined cosmetics on high-gloss UV surfaces. Jucheng operates all liquid painting processes inside certified Class 10,000 dust-free positive-pressure spray booths, supported by electrostatic de-dusting blowers.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

Painting & Coating Systems & Functional Performance Applying high-performance liquid spray coats onto molded plastics enhances both haptic premium feel and chemical\/UV durability. We support multiple advanced coating systems: Coating Technology Typical Coating Medium Thickness & Hardness Key Advantages & Applications Soft-Touch PU Polyurethane Velvet Co-polymer Paint 15 – 25 \u00b5m \/ HB to F […]<\/p>\n","protected":false},"featured_media":2586,"template":"","process_category":[25],"class_list":["post-2564","process","type-process","status-publish","has-post-thumbnail","hentry","process_category-surface-finishes"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/process\/2564","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/process"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/types\/process"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media\/2586"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media?parent=2564"}],"wp:term":[{"taxonomy":"process_category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/process_category?post=2564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}