Circuit Board Cushion Paper stable heat transfer PCB pressing material Kraft Paper

Product Description: 

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.

Technical specification 

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 |

Technical Parameters:

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).

Packing and Shipping: 

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