Duplex Board
Double Sided Printer Paper
Coated Duplex Board
Both Side Printing Photo Paper
Grey Back Duplex Board
Whiteback Duplex Board
Custom Packaging Solutions
The demand for duplex board paper and its derivatives—duplex board, duplex cardboard, double sided printer paper, and coated duplex board grey back—has been surging globally, reflecting an increased preference for sustainable, high-quality, and versatile packaging & printing solutions. According to Smithers and Statista, the global duplex board paper market surpassed $15.2 billion in 2023, with CAGR projected at 4.3% until 2030. Key drivers include advanced coating technologies, recyclability, and expansion into sectors like pharmaceuticals, cosmetics, and e-commerce logistics.
Figure: High-grade duplex board paper optimized for double-sided printing
Industry Overview & Application Trends
Duplex board paper is recognized for its smooth double-faced surface, enabling both-side printing and superior print fidelity. Typically composed of bleached (white) and unbleached (grey) pulps, this material ensures balance between strength, brightness, and print adaptability.
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Packaging & Carton Manufacturing: Used for boxes in pharmaceuticals, foods, toys, electronics due to its rigidity and printable surfaces.
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Photo & Poster Printing: The rise of both side printing photo paper for marketing and creative industries.
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Stationery & Offset Printing: Preferred for brochures, calendars, notebooks, and premium double sided printer papers.
Market Share by Application – Global Duplex Board Paper 2023
Data source: Statista, Smithers, Industry Research Global 2023
Technical Parameters & Product Comparison
Fine-tuned technical parameters distinguish each duplex board paper grade. Below is a comparison of mainstream products—standard duplex board, coated duplex board grey back, duplex board with whiteback, and double sided printer paper.
Type |
Caliper (μm) |
GSM Range |
Whiteness (%) |
Coating Type |
Bending Stiffness (mNm) |
Pulp Composition |
Standard |
Duplex Board (Grey Back) |
310–540 |
230–450 |
74–78 |
Single Triple Coated |
7.5–28.5 |
Recycled + Bleached Pulp |
ISO 536, ANSI Z45 |
Duplex Board with Whiteback |
320–540 |
250–450 |
83–90 |
Double/Triple Coated |
9.9–31.2 |
Virgin/High-Grade Mixed Pulp |
ISO 9001, ISO 14001 |
Coated Duplex Board (High Gloss) |
310–530 |
230–400 |
80–88 |
Double Coated |
8.7–27.1 |
Virgin + Recycled Pulp |
ISO/IEC 2471 |
Double Sided Printer Paper |
85–110 |
80–120 |
90–98 |
Surface Treated |
2.3–4.2 |
Bleached Pulp |
ISO 9706 |
Key: GSM = Grams per Square Meter; Caliper = Thickness (μm); Whiteness measured per ISO 2471; Bending Stiffness per ISO 5628.
Duplex Board with Whiteback: Manufacturing Process Explained
Duplex board with whiteback—a flagship product by Shineway Paper—is manufactured through an advanced, highly standardized process to ensure duplex board paper of exceptional quality, consistency, and environmental compliance.
1. Pulping
Virgin & high-grade recycled pulp refining
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2. Layer Formation
Headbox deposits sequential pulps for structure
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3. Pressing & Drying
Hot pressing, multi-zone drying enhances bonding
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4. Coating
Double/triple application for smoothness & printability
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5. Calendaring
High-pressure rolling for surface uniformity
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6. Cutting & Inspection
Automated precision cutting, ISO/ANSI QC tests
- Key materials: 70–100% virgin pulp, white clay, latex binders
- Quality standards: ISO 536, ISO 2471, ISO 5628
- Typical defects detected: Surface mottling, layer separation, gloss inconsistency
- Traceability: End-to-end QC with batch tracking
For a visual schematic and video walkthrough, visit:
Duplex Board Paper Manufacturing Process Video
Figure: Coated duplex board grey back for multipurpose packaging & print
Duplex Board with Whiteback: Key Technical Specification Table
Parameter |
Value Range |
Measurement Standard |
Grammage (GSM) |
250–450 |
ISO 536 |
Whiteness |
≥ 88% |
ISO 11475 |
Bending Stiffness |
9.9–31.2 mNm |
ISO 5628 |
Moisture Content |
6.0% ±1.0% |
ISO 287 |
Surface Smoothness |
≤ 5 μm |
ISO 8791-2 |
pH Value |
6.5–7.5 |
ISO 6588 |
Technical Indices Comparison: Whiteback vs. Grey Back
Index mapped to relative scale for easy visual comparison.
Technology Advantages: Why Choose Duplex Board with Whiteback?
- Superior Printability: Ultra-smooth, high-whiteness whiteback surface supports offset, flexo, and digital print with vivid color reproduction and sharp text.
- Enhanced Stiffness & Durability: Multi-layer structure resists warping and cracking, ideal for heavy-duty packaging.
- ISO-Certified Quality: All exports comply with ISO 9001, ISO 14001, ANSI Z45, and food-contact safety standards where required.
- Superior Moisture Control: Ensures minimal curl, reduced ink bleeding, and optimal die-cutting efficiency.
- Environmental Compliance: FSC-certified supply chains and chlorine-free production for green packaging trends.
Case Study: Duplex Board Paper in Multinational FMCG Packaging
Problem: A leading cosmetics manufacturer needed sustainable and vibrant high-volume packaging compatible with automated filling lines.
Solution: Shineway’s duplex board with whiteback (425 GSM, triple coated) achieved 30% higher print gloss and 15% improved die-cut accuracy compared to previous duplex cardboard used, streamlining supply for 14 million boxes/year.
- Technical outcome: ISO/IEC 2471 whiteness 91%, zero delamination at automated feeders over 60-hour production cycle.
- Value delivered: Production defect rate 1.2‰ (down 55%), brand sales up 9% due to improved unboxing experience.
*Customer testimonial & QC reports available on request.
Suppliers Comparison: Selection Guidance for Buyers
Supplier |
Main Product |
Certifications |
Annual Output (tons) |
Lead Time |
Global Markets |
Shineway Paper |
Duplex Board with Whiteback |
ISO 9001, ISO 14001, FSC |
450,000 |
15–20 days |
Asia, EU, S. America, Middle East |
ITC Limited |
Coated Duplex Board |
ISO, SGS, FDA |
370,000 |
28–40 days |
Europe, America, MEA |
APP (Asia Pulp & Paper) |
High-Bulk Duplex Board |
ISO 9001, FSC, PEFC |
Variable |
22–30 days |
Global |
Korsnäs (Billerud) |
SBS Board, Premium Duplex |
ISO, FSC |
325,000 |
28–35 days |
Europe, Asia |
Shineway Paper advantages: faster lead time, ultra-high whiteness, custom cut sizes, and global export experience (30+ countries).
Customization & Turnkey Solutions
- Custom GSM/Caliper: 200–500 GSM, custom ply count, or compositional layering.
- Surface Variants: Glossy, matte, anti-fingerprint, embossed finishes available for high-value packaging.
- Precision Converting: Die-cutting, sheets or reels, OEM branding.
- Functional Add-ons: Water resistance, anti-counterfeit micro-texture, grease-proof options.
- Compliance: FDA food-grade paper, ROHS/REACH certification on demand.
Professional FAQ: Industry Key Terms Explained
Q1: What is the main difference between duplex board and duplex cardboard?
Duplex board specifically refers to paperboard with distinct coated (white) and uncoated (grey) faces, optimized for graphics and packaging. "Duplex cardboard" is a colloquial term, sometimes used interchangeably, but can include heavier grades and broader thicknesses (over 500 μm).
Q2: Which testing standards are applied to ensure duplex board paper performance?
Key standards: ISO 536 (grammage), ISO 2471 (whiteness), ISO 5628 (bending stiffness), ISO 11475 (brightness), ISO 8791 (smoothness), and ANSI Z45 (printing suitability).
Q3: For double sided printer paper, what ensures no ink bleed-through?
Surface sizing (chemically treated layer) and multi-stage high-gloss coating provide excellent ink hold-out, minimizing feathering and bleed-through even for high-coverage digital inks.
Q4: What is the typical service life of coated duplex board packaging?
For indoor, dry environments: 3–5 years without significant yellowing/structural loss. For food/non-food packaging, actual shelf stability depends on external humidity and stacking.
Q5: What installation or usage precautions should be taken for heavy-duty duplex board cartons?
Proper scoring, folding along grain direction, and machine gluing are critical. Storage below 30°C and 65% RH ensures optimal box stability.
Q6: What are the main compositional differences between whiteback and grey back grades?
Whiteback grades use a bleached/virgin ply for the back layer, resulting in higher brightness, printability, and hygiene. Grey back uses more recycled content, optimized for cost and secondary-use packaging.
Q7: What is the shipping lead time and global delivery coverage for Shineway duplex board paper?
Standard lead time is 15–20 days for FCL shipments. Air/express options available for samples. Global service includes documentation support (CO, Form E), and after-sales technical guidance online.
Delivery, Warranty, and Customer Support
- Normal delivery time: 15–20 days for ≤3,000 tons (custom specifications may extend to 25 days).
- Warranty: All duplex board paper grades warrantied for 12 months against physical, chemical, and print defects under standard handling.
- Customer support: 24/7 technical service, onsite support for bulk clients, and remote QC documentation.
- MOQ: 1 MT for trial orders; powerful flexibility for customizing size, packaging, and finish.
- Compliance: FSC & ISO 14001 environmental trackability, food safety declarations as required.
Real-World Application Scenarios
- Pharmaceutical Cartons: Blister/strip packaging requiring dimensional stability and anti-tamper print effects.
- Personal Care Packaging: Cosmetic boxes with high-gloss whiteback for metallic/embossed finishes.
- Food Delivery Trays & Bakery Boxes: Grease-resistant, food-grade duplex board with custom die-cuts.
- Retail POP Displays: Rigid, both side printable photo paper for vivid brand communication.
- E-commerce Mailing Boxes: Triple-layer (white-grey-white) construction for stacking strength.
References & Authority Endorsements