Eaststar New Material (Tianjin) Limited
Eaststar New Material (Tianjin) Limited
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PCB or CCL laminated special Kraft paper (bamboo pulp) can meet the production needs of CCL, PCB, IC carrier board, aluminum substrate lamp products, and fully meet the pressing process requirements of high-end PCB or CCL industries.
The key features or advantages of Kraft paper (PCB lamination press paper/cushion Kraft paper/buffering paper/hot press paper) are detailed as below:
1. Higher temperature resistance: our Kraft paper has a higher heat resistance than commonly used traditional Kraft paper, does not carbonize, is not easily brittle, and can withstand high temperatures of 220 degrees Celsius for 125 minutes, meeting the needs of lead-free soldering.
2. Good thermal elasticity (physical buffering), high flatness, stable heat transfer performance, and moderate heat transfer rate.
3. Good breathability and physical cushioning to increase the product's usage frequency.
4. Non stick steel plate, no chips falling off.
What is PCB Kraft Paper?
PCB kraft paper, also known as circuit board cushion paper or PCB pressing material, is a specialized high-temperature resistant paper essential for printed circuit board manufacturing. Made from premium virgin wood pulp, this lamination paper ensures optimal performance in PCB, FPC, and CCL production processes.
Key PCB Paper Specifications:
Available Weights: 160G and 190G PCB press paper
Minimum Order Quantity: 2 ton
Core Feature: Heat resistance up to 230℃
PCB Kraft Paper Technical Details
Property | 160G Kraft Paper | 190G Kraft Paper |
|-------------------|----------------------|------------
| Paper Weight | 160±5 g/m² | 190±5 g/m² |
| Thickness | 0.22±0.03 mm | 0.26±0.03 mm |
| CD Tensile Strength | ≥5.0 kgf/15mm | ≥5.0 kgf/15mm |
| MD Tensile Strength | ≥6.5 kgf/15mm | ≥6.5 kgf/15mm |
| Pressing Cycles | 3~5 times | 3~5 times |
1). Conventional weight in grams: 160g/cm2, 190g/cm2, 254g/cm2, 320g/cm2.
2). Keeping the moisture content of the paper below 7% can avoid adhesion between Kraft paper sheets and/or between steel plates during the pressing process.
3). The uniformity of paper thickness is stable in the range of +/-0.02mm, which can better ensure the balanced distribution of laminating pressure (good physical buffering) and stable heat transfer (good thermal buffering).
| Process Type | Required Temperature | Recommended Paper |
| Standard PCB Lamination | 180-200°C | 160G Kraft Paper |
| High Tg PCB Production | 200-230°C | 190G Kraft Paper |
| Lead-Free PCB Assembly | >230°C | 240G High-Temp Paper |
PCB Pressing Material Best Practices
Store PCB kraft paper in controlled environments
Inspect paper before use in circuit board pressing
Follow recommended pressing cycles
Monitor moisture content for optimal results
Ordering PCB Kraft Materials: Purchase Guide
PCB Paper Packaging Options
Sheet-form PCB kraft paper
Roll-form circuit board paper
Custom sizes available
Delivery & Sampling
Lead Time: 5-25 working days
Shipping Ports: Guangzhou or Shenzhen
Sample Option: Free A4 size PCB paper samples
