2. Structure & Composition
Layers: Typically composed of 3–5 layers:
Top layer: High-quality bleached kraft or virgin fiber for printability and smoothness.
Core layer(s): Recycled or virgin fibers for strength and rigidity.
Back layer: Coated or uncoated for stability and adhesion to plastic.
Coatings: Often coated with clay, starch, or synthetic polymers to enhance gloss, ink absorption, and thermoforming compatibility.
3. Key Properties
Stiffness & Thickness: High 挺度 (rigidity) to support blister structures; grammage ranges from 200–450 gsm.
Surface Smoothness: Low roughness (e.g., 10–20 µm) for sharp printing and seamless plastic adhesion.
Thermoforming Compatibility: Heat resistance to withstand blister sealing (120–180°C) without warping.
Printability: Excellent CMYK/spot color performance for branding and labeling.
4. Applications
Blister Packaging: Electronics (e.g., batteries, USB drives), medical devices, cosmetics, and food (e.g., blister trays for cookies).
Point-of-Purchase (POP) Displays: Rigid retail displays with integrated blister compartments.
Industrial Components: Customized blister inserts for tool or hardware organization.
5. Manufacturing Process
Pulping: Mixing virgin/recycled fibers (e.g., hardwood/softwood kraft pulp).
Forming: Multi-ply papermaking machine creates the board structure.
Coating & Calendering: Surface coating (e.g., pigmented coatings) and smoothing via calenders.
Slitting & Finishing: Cutting to standard sizes (e.g., 787×1092 mm, 889×1194 mm).
Quality Control: Testing for thickness, moisture content (6–8%), and blister adhesion strength.
6. Quality Standards
Grammage: 200–450 gsm (common: 300–350 gsm for blister trays).
Thickness: 0.3–0.7 mm (tolerance: ±5%).
Brightness: 80–95% (ISO brightness for vibrant prints).
Tear Resistance: ≥300 mN (MD/CD ratio ≤1.5 for uniform formability).
7. Environmental Considerations
Recyclability: Curbside recyclable (check local guidelines).
Sustainability: Increasing use of FSC/PEFC-certified fibers and water-based coatings.
Alternatives: Biodegradable PLA-coated whiteboards for eco-friendly blister packaging.
8. Market Trends
Growth Drivers: E-commerce (product protection), medical packaging (sterilization compatibility), and premium retail branding.
Innovation: Hybrid materials (e.g., whiteboard + PET film laminates for barrier properties).
Regional Demand: Asia-Pacific dominates production (China, Japan), driven by electronics and consumer goods industries.
9. Common Challenges
Moisture Sensitivity: Requires humidity-controlled storage (40–60% RH) to prevent warping.
Adhesion Issues: Poor plastic-board bonding (addressed via corona treatment or adhesive coatings).
Cost: Premium pricing vs. uncoated boards due to specialized coatings and quality controls.
10. Industry Standards
ISO 186: Paper and board-Sampling to determine average quality.
TAPPI T452: Thickness (caliper) of paper and board.
ASTM D6499: Standard for blister packaging performance (e.g., peel strength).
Example Specifications (Typical)
| Property | Value |
|---|---|
| Grammage | 350 gsm ±5% |
| Thickness | 0.55 mm ±0.03 mm |
| Brightness (ISO) | 92% min |
| Moisture Content | 7% ±1% |
| Tensile Strength (MD) | 120 N/cm min |
If you need self-adhesive whiteboard paper, you can contact us and we will offer you a quotation.
address：(Factory Building) Hengyu Road 4th, Sandong Digital Park, Huicheng District, Huizhou City, Guangdong Province
WhatsApp：18933510649
email：02@songhongpaper.com