pigment eyeshadow palette factory

pigment eyeshadow palette packaging production technology process (2025 upgraded version)

I. Basic material preparation system

Environmentally friendly substrate solution

Using 1.5mm bio-based PETG material, formed by twin-screw extrusion hot bending process (curvature radius ≥ 3mm)^^

Optically variable coating material, achieving iridescent gradient effect at 15°~75° viewing angle (color difference ΔE≤1.5)^^

Intelligent color rendering component

UV-curing ink contains marine diatom extract, and the ultraviolet absorption band covers 280-400nm^^

Aerospace-grade temperature-changing nano coating, response range 28℃-42℃ (human body contact area), hue change span up to 120°^^

II. Precision manufacturing process chain

Structural molding technology matrix

Process type

Technical parameters

Application example

Ultra-thin injection molding

0.5mm wall thickness PP material (melt index 18g/10min)

Shell pattern two-color plate^^

Micro-relief processing

1280/cm² three-dimensional dots (depth tolerance ±0.02mm)

Constellation pattern relief^^

Dynamic color development process

Laser etching: 1064nm fiber laser, minimum line width 0.1mm (Paris landmark pattern)^^

Thermostatic lamination: sandwich structure packaging, including thermotropic liquid crystal microcapsule layer^^

III. Quality control protocol

Mechanical performance test

Drop test: 1.2m high free fall (concrete floor)^^

Hinge life: ≥5000 opening and closing tests (torque 0.8N·m)^^

Optical stability verification

Xenon lamp aging: 50k Lux irradiation for 200h: ΔE≤3^^

| Temperature conditions | Color response time | Color fastness |

|---|---|---|

| -20℃ | 1.2s | Level 4^^ |

| 50℃ | 0.6s | Level 5^^ |

IV. Special process module

Intelligent color change system

"Mars Red" formula: Contains Fe₂O₃@SiO₂ core-shell structure particles (reflectivity 83%)^^

Biothermal induction: Cholesteric liquid crystal coating, achieving green→cyan→blue three-step color change^^

Surface treatment solution

UV relief: 256nm excimer laser shaping (step depth 0.3-0.5mm)^^

Sealing system: Medical grade silicone strip (Shore hardness 35A) anti-leakage powder design^^

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