{"id":4272,"date":"2026-11-03T14:11:34","date_gmt":"2026-11-03T06:11:34","guid":{"rendered":"http:\/\/0"},"modified":"2026-11-03T10:48:40","modified_gmt":"2026-11-03T02:48:40","slug":"color-matching-in-injection-molding-starts-with-the-partcolor-matching-in-injection-molding-should-be-approved-on-a-representative-molded-part-not-judged-from-a-color-number-alone-the-same-pigment-c","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/vi\/blog\/color-matching-in-injection-molding-starts-with-the-partcolor-matching-in-injection-molding-should-be-approved-on-a-representative-molded-part-not-judged-from-a-color-number-alone-the-same-pigment-c\/","title":{"rendered":"Ph\u1ed1i m\u00e0u trong \u00e9p phun b\u1eaft \u0111\u1ea7u t\u1eeb chi ti\u1ebft"},"content":{"rendered":"

Color matching in injection molding should be approved on a representative molded part, not judged from a color number alone. The same pigment can look different when resin chemistry, wall thickness, surface texture, gloss, or viewing light changes. A chip is a useful starting reference; it is not proof that the finished geometry will look identical.<\/p>\n

For procurement and product teams, the most reliable color decision is a documented match target plus a molded approval sample made with the intended resin and surface. That turns \u201clooks close\u201d into a repeatable comparison and reduces disputes when production lots begin.<\/p>\n

That approval sits within a broader \u0111\u00fac phun nh\u1ef1a<\/a> project, where resin, part geometry, and appearance criteria need to be evaluated together.<\/p>\n

Trong b\u00e0i vi\u1ebft n\u00e0y<\/h2>\n
    \n
  1. Why a chip and molded part can disagree<\/a><\/li>\n
  2. Define the target before selecting colorant<\/a><\/li>\n
  3. A practical sample-approval sequence<\/a><\/li>\n
  4. Keeping production color consistent<\/a><\/li>\n
  5. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<\/ol>\n

    Why a chip and molded part can disagree<\/h2>\n

    A color reference is viewed under a particular thickness, texture, gloss, and light. A molded component has its own optical path. A thick boss can appear darker than a thin wall; a textured surface can diffuse reflected light; and a glossy face can show highlights that change perceived saturation.<\/p>\n

    The resin also matters. Pigment or masterbatch compatibility, base polymer color, reinforcement, recycled content, and processing history can shift the appearance. These variables do not make color matching impossible; they mean the target must be tied to the actual part and material system. When the resin is not selected, browse the available injection molding materials<\/a> and identify the intended grade before approving a final color.<\/p>\n

    Lighting is another source of disagreement. Two people may compare the same part under different room lights and describe different color impressions. For critical products, define the viewing environment and compare samples side by side under the same conditions. If instrumental measurement is part of the specification, agree on the method, location, geometry, and acceptance range with the quality team rather than assuming one reading captures the whole part.<\/p>\n

    Define the target before selecting colorant<\/h2>\n

    Before a colorant supplier or molder starts a match, gather the inputs that determine what \u201ccorrect\u201d means:<\/p>\n