Professional grey board manufacturer.
Professional grey board manufacturer.
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Core Board Paper
Basis weight:360-510gsm
Thickness:0.48-0.77mm
Roll width:500-2000mm in widths customer sizes oem
Paper color :Unbleached brown
Quality:Grade AAA, Grade AA, Grade A
Application:used for paper tube and corner protector converting
Used for paper tube and corner protector converting
※ The core board paper is composite paper, which is composed of multiple layers of paper pulp. Usually use wood pulp or waste paper pulp as the raw material.
1.The core board paper is a kind of industrial paper used in bobbin and tapered paper tube making in the textile industry.
2.The core board paper is tough and wear-resistant, and the paper surface is smooth and even. It needs to have good water resistance. When used, it can resist edge depression and withstand lathe processing.
Technical Specification
The range of our core board paper is as follows:
Physical | Grade | AAA Grade | AA Grade | A Grade | |||||
properties | Core board | Core board | Core board | ||||||
Unit | 360 | 420 | 360 | 420 | 360 | 420 | 510 | ||
Grammage | g/m2 | Target | 360-370 | 420-430 | 360-370 | 420-430 | 360-370 | 420-430 | 510-520 |
Thickness | mm | Target | 0.48-0.52 | 0.57-0.61 | 0. 47-0.51 | 0.56-0.60 | 0.50-0.54 | 0.60-0.63 | 0.71-0.77 |
Density | g/cm3 | Target | 0.70-0.74 | 0.70-0.74 | 0.70-0.74 | 0.70-0.74 | 0.66-0.72 | 0.66-0.72 | 0.66-0.72 |
RCT | N. m/g | Minimum | 12 | 12 | 10 | 10 | -- | -- | -- |
(Strength) | Minimum | 16 | 16 | 14 | 14 | 9 | 9 | 9 | |
Internal Bond | J/m2 | Minimum | 350 | 350 | 250 | 250 | 180 | 180 | 180 |
COBB (1min) | g/m2 | Maximum | 400 | 400 | 400 | 400 | 400 | 400 | 400 |
(ton/back) | |||||||||
Moisture | % | Target | 8+/-2 | ||||||
Method of testing: temp 23±1℃;RH 50±2% | |||||||||
To be carried out according to the relevant standards of GB/ T | |||||||||
This product is not recommended for use in food paper. | |||||||||
Packaging & Shipping※ Sheet on wooden pallet & Plastic film wrapped on pallet & Plastic strip reinforced pallet & Protection corner & As per requirements of the customer
※ Height of pallet: 1.1m, 1.2m, 2.0m.
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