Songhong Double-Side Smooth Gray Board
The Perfect Balance of Elegance & Durability
Huizhou Songhong Industry Co., Ltd. | Since 2005 | ISO 9001 & FSC® Certified
🌟 Product Overview
Songhong Double-Side Smooth Gray Board is a premium composite paperboard designed for high-end packaging and creative applications. Unlike traditional gray boards with one rough side, our dual-sided smooth surface (both sides ≥600 SCT smoothness) allows full utilization of both faces, reducing material waste by 30%.
Key Features:
Dual Smoothness: 200g-600g/m², 0.25-1.0mm thickness
Neutral Gray Core: Consistent 75-80% brightness for sophisticated aesthetics
Superior Flatness: ≤0.5mm/m curl (ASTM D6837 standard)
High Stiffness: 15% higher bending resistance than market average
📦 Core Advantages (Backed by 18+ Years R&D)
| Feature | Technical Innovation | Application Benefit |
|---|---|---|
| ✨ Double-Side Print | Plasma-treated surface (patented) | Direct CMYK printing on both sides without pre-coating |
| ⏳ Moisture Resistance | Cross-linked sizing technology | Stable performance in 40-85% RH environments |
| 🌿 Eco-Construction | 40% recycled content + FSC virgin fibers | Meets EU Ecolabel & US FDA food contact standards |
| 🧩 Perfect Fit | ±0.03mm thickness tolerance (AI-controlled) | Precision die-cutting for luxury boxes |
🔍 Technical Specifications
| Parameter | Standard Value | Test Method |
|---|---|---|
| Basis Weight | 200-600g/m² (50g increments) | ISO 536 |
| Thickness | 0.25-1.0mm (±0.03mm) | ISO 438 |
| Tensile Strength | ≥8.5kN/m (MD) | ISO 1924-2 |
| Surface Smoothness | ≥600 SCT (both sides) | ISO 5627 (Bendtsen) |
| Brightness (C/2°) | Front: 88-92% | ISO 2470-1 |
| Back: 75-80% | ||
| Recycled Content | 40% post-consumer waste | FSC-STD-40-004 |
🎁 Application Scenarios (Real Client Cases)
1. Luxury Cosmetic Packaging
Client: Perfect Diary (China's leading makeup brand)
Solution: 350g double-side printed gray board for lipstick gift boxes
Result: Reduced packaging cost by 22% vs. single-side coated boards
2. Premium Bookbinding
Client: Guangdong People's Publishing House
Product: 500g gray board for hardcover art books
Feature: Matte-finished backside for adhesive-free spine reinforcement
3. Electronics Packaging
Client: TCL Smart Home (Export Models)
Requirement: Moisture-resistant boards for humid Southeast Asian markets
Songhong's Edge: 72-hour humidity test (85% RH, 40℃) with 0% delamination
🏭 Manufacturing Process (Songhong's 4.0 Workshop)
100% Automated Production Flow:
Pulping: Mixed recycled fibers + FSC-certified eucalyptus pulp (Swiss Bühler pulper)
Forming: 4-layer curtain coater for uniform density distribution
Calendaring: 12-roller soft nip calender (German BHS) for mirror-like smoothness
Quality Control: AI vision system inspects 10,000+ points/m² (defect rate <0.05%)
Sustainability Commitment:
98% water recycling in production
Carbon-neutral factory (since 2023, verified by SGS)
🤝 Why Partner with Songhong?
✅ Customization Expertise: 7-day sample turnaround for special sizes (min. order: 500 sheets)
✅ Global Compliance: Exported to 25 countries, meets EU REACH, US CFR 176.170 regulations
✅ Technical Support: Free packaging design consulting by our 15-member R&D team
✅ Track Record: 99.6% on-time delivery for 500+ clients including Walmart and L'Oréal
Product Brochure Download: www.songhongpaper.com/grayboard-en.pdf
Contact for Inquiry:
Mr. Chen (International Sales Manager)
Email: chen@songhongpaper.com | Tel: +86 752-388-XXXX
Factory Address: No. 8 Songshan Rd, Zhongkai Hi-Tech Zone, Huizhou, Guangdong
"Every fold tells a story-with Songhong Gray Board, make it unforgettable."
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