Product Overview
Product Name: White Back Duplex Board (Cosmetic-Grade)
Sizes: 61×61cm (standard for compact cosmetic boxes) – customizable to 50×50cm~120×120cm
Thickness: 1.5mm (±0.1mm) / 2.0mm (±0.1mm)
Color: Double-Sided White (Front: L*≥92, Back: L*≥88) – white back eliminates visible grey cores in folded edges.
Core Material: Grey virgin wood pulp (FSC®-C176082) + white top/bottom layers (25% post-consumer recycled content optional).
Certifications: FSC® CoC, SGS ISO 9001, FDA
Product Content & Technical Specifications
Material Structure
Top Layer: 100gsm glossy white paper (CIELab L*92) – optimized for CMYK/Pantone printing (ΔE≤1.0).
Core Layer: 300gsm grey sulfate pulp (1.2g/cm³ density) – provides 1.5mm/2.0mm rigidity without bulk.
Back Layer: 80gsm matte white paper (L*88) – smooth for internal branding or adhesive bonding (e.g., velvet liners).
Key Performance Data
| 指标 Parameter | 1.5mm 板 | 2.0mm 板 | 测试标准 Test Method | 化妆品包装需求匹配度 |
|---|---|---|---|---|
| 挺度 Stiffness (MD) | 780mN·m | 1,100mN·m | ISO 5628 |
支撑磁吸盖 / 书型盒 Support magnetic cover/book case |
| 耐折度 Folding Cycles | 180 + 次 | 250 + 次 | ISO 5626 (180° 折叠) |
翻盖 5000 次无裂痕 Clamshell 5000 times without cracks |
| 水分含量 Moisture | ≤7% | ≤6.5% | ISO 287 |
南方梅雨季专用 Southern plum for rainy season |
| 油墨附着力 Ink Adhesion | 5B (100% 附着) | 5B (100% 附着) | ASTM D3359 |
烫金 / UV 工艺无忧 Bronzing/UV process is worry-free |
| 边缘白度 Edge Whiteness | L*≥85 | L*≥85 | 自定义测试(截面扫描) |
折叠后无灰边外露 No gray edges exposed after folding |
Phone Number：18933510459
email address：damin@songhongpaper.com
company address：(Factory Building) Hengyu 4th Road, 3 Building Digital Park, Huicheng District, Huizhou City, Guangdong Province
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