4mm Coated Duplex Board Grey Back Sheet Recycled Gray Card Board Paper
Product Details
| Customization: | Available |
|---|---|
| Type: | Paper Board |
| Application: | Industrial Paper |
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Basic Info.
- Model NO.
- Grey Paper Board
- Paper Pulp
- Wood Pulp
- Pulp Purity
- Refined Pulp
- Weight
- >300g
- Veins
- Plain
- Paper Grades
- Excellence
- Warranty
- 3 Years
- Customized
- Customized
- Thickness
- 0.3-5.0mm
- Tensity
- 0.60g/GM3 ± 8%
- Stiffness
- ≥5mn.M/100g
- Smoothness of 0.9-1.4mm
- 2000ml/Min
- Smoothness of 1.5-5.0mm
- 1600ml/Min
- Tensile Strength
- 14.5kN/M
- pH Value
- 6-7.5
- Moisture
- 5%
- Folding Endurance
- 15 Times
- Laminated Type
- Grey/Grey, White/Grey, White/White
- Transport Package
- Standard Export Packing
- Specification
- SGS
- Trademark
- Tianhong
- Origin
- China
- HS Code
- 48119000
- Production Capacity
- 1000 Tons Per Month
Product Description

Specification
Name | Clay Coated Duplex Cardboard Grey Back |
Basis weight | 230, 250, 300, 350, 400, 450 g/m2 |
Size | 60*90cm, 61*86cm, 70*100cm and customized sizes in sheets or in jumbo reels |
Coating | clay coated one side |
Paper color | top white grey back |
Quality | recycled |
Applications | for carton, box and hand bag production |
Product Description
Grey Cardboard
Grey Cardboard is a premium single-layer paperboard made from high-density virgin wood pulp, offering exceptional rigidity and durability. Featuring a distinctive grey back with natural texture, the front side can be customized with various finishes (such as lamination, UV coating, or foil stamping). It is widely used in mid-to-high-end packaging boxes, mounting boards, display stands, book covers, and other applications requiring structural strength.


Parameters | Unit | Value |
Basis weight | g/m2 | 230-450 |
Caliper | um | 270-560 |
Whiteness | % | ≥85 |
Surface glossy | % | ≥40 |
Smoothness | sec | ≥70 |
COBB | g/m2 | ≤50 |
Moisture | % | 6-8 |
Printing intensity | m/s | ≥1.2 |
Ink absorbent | % | 25 |
Folding resistant | times | ≥10 |
Applications
luxury gift boxes, high-end packaging, shopping bags, book covers, and other premium products.


Packing & Delivery

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FAQ
Contact us for bulk discounts
1. How to choose the right thickness?
*Book covers:
commonly 1.5 mm – 3.0 mm (600 g – 2000 g)
*Handmade models:
thickness depends on load-bearing needs. Small boxes can use 1.0 mm – 2.0 mm, while larger boxes require 2.0 mm or above.
2. Is thermal paper environmentally friendly?
Environmental protection: It can be completely degraded and does not contain BPA and other substances that are harmful to humans.
3. What should be paid attention to during storage and transportation?
Conditions: Store in a dark and dry environment, avoid high temperature, squeezing or heavy stacking, and use as soon as possible after opening.
*Book covers:
commonly 1.5 mm – 3.0 mm (600 g – 2000 g)
*Handmade models:
thickness depends on load-bearing needs. Small boxes can use 1.0 mm – 2.0 mm, while larger boxes require 2.0 mm or above.
2. Is thermal paper environmentally friendly?
Environmental protection: It can be completely degraded and does not contain BPA and other substances that are harmful to humans.
3. What should be paid attention to during storage and transportation?
Conditions: Store in a dark and dry environment, avoid high temperature, squeezing or heavy stacking, and use as soon as possible after opening.
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