1、 Manufacturing process of premium hot pressed paper
> High strength plant fiber:modified treatment,special pulping;
> High temperature resistant fiber:self-developed process to achieve better high temperature resistance performance;
> Paper making:Sheet forming using a mixing-type paper machine;
> Slitting packaging:online removal of static electricity and dust,paper surface decoration and online quality inspection,moisture-proof and anti-collision packaging.
2、 Premium Hot Pressed Paper vs. Traditional Kraft Paper
➢ Special grade hot pressed paper, specializing in the development and research of cushioning materials for copper-clad laminate (CCL) and printed circuit board (PCB) lamination processes.Compared with traditional kraft paper lamination materials, it has the following characteristics;
➢ Adopting high-quality plant fibers,modified special fibers,and unique forming processes;
➢ Provides stable,sustained cushioning pressure with excellent resilience.Resilience significantly recovers after being left for 12 hours before reuse;
➢ Heating rate similar to kraft paper, with uniform temperature distribution;
➢ Operating conditions: 210°C, 40kg, 180 mins-can be recycled and reused >10 times (depending on specific customer lamination conditions);
➢ Operating conditions: below 190°C, 30kg, 120 mins-can be recycled and reused >30 times (depending on specific customer lamination conditions);
➢ No fuzzing or dusting during the lamination process;
➢ No sticking to steel plates or adhesion between paper sheets during the lamination process. Moisture-proof treatment is required before use; otherwise, anti-sticking performance will be significantly reduced;
➢ Significantly reduce the cost of single comprehensive pressing, improve production efficiency, and reduce on-site labor intensity;
➢ The weight design of the product can reach 160g/m2, 210g/m2, and 240g/m2,and can be customized.
3. Technical Specifications of Premium Hot-Pressing Paper
Project | Unit | Value | ||
Basis Weight (Nominal) | g/m2 | 160 | 210 | 240 |
Basis Weight Deviation-Machine Direction | g/m2 | ±5 | ±7 | ±8 |
Basis Weight Deviation-Cross Direction | g/m2 | ±5 | ±7 | ±5 |
Thickness | mm | 0.28 | 0.36 | 0.48 |
Thickness deviation | mm | ±0.03 | ±0.03 | ±0.04 |
Tensile strength (KN/M) | Machine Direction | 6 | 7 | 8 |
Cross Direction | 4 | 5 | 6 | |
Smoothness (S) | Felt Side | >15 | >15 | >15 |
Wire Side | >7 | >7 | >7 | |
Dust level (0.2~0.7mm) | a/m2 | ≤10 | ≤10 | ≤10 |
Dust level (0.8~1.0mm) | ≤1 | ≤1 | ≤1 | |
Air permeability | ml/min | 400-600 | 300-500 | 200-400 |
Moisture Content (Max) | % | ≤8 | ≤8 | ≤8 |
Finished size deviation | mm | ±5 | ±5 | ±5 |
