Step-by-Step Process: How Perforated Underlayer Brown Paper Rolls Are Used in Garment CAD Auto CNC Machines

In modern garment manufacturing, precision cutting is crucial for efficiency and fabric utilization. One essential material that supports this process is the perforated underlayer paper roll—also known as perforated lay paper, punch hole paper, or perforated paper roll. This blog explains in detail how these perforated paper rolls are used in garment CAD auto CNC machines, helping manufacturers achieve accurate and stable cutting.

What is Perforated Underlayer Paper Roll?

Perforated underlayer paper roll is a specially designed kraft paper with evenly spaced perforations (holes) throughout the sheet. These holes allow vacuum suction to pass through the paper during the cutting process, securing the fabric lay firmly on the cutting table. This ensures the fabric does not shift, resulting in precise cutting of garment components.

The paper is typically brown kraft paper, available in various GSM weights (commonly 80-120 GSM), widths (such as 62", 64", 72", 79") to fit different machine sizes and fabric types.

Step 1: Preparing the Fabric Lay on the Cutting Table

Before cutting, multiple layers of fabric are spread on the cutting table according to the marker plan generated by the CAD system. The fabric lay is aligned carefully to maintain grain direction, pattern matching, and ply tension.

The perforated lay paper is placed underneath the fabric lay as an underlayer. This paper acts as a protective base and facilitates vacuum suction.

Step 2: Positioning the Perforated Paper Roll

The perforated paper roll is unrolled and spread evenly across the cutting table surface. Because it contains uniformly spaced punch holes (commonly 5 mm diameter spaced at 1x1 inch or 2x2 inch grids), it allows the vacuum suction system of the CNC auto cutter to pull air through the paper.

This suction secures the fabric lay tightly against the table, preventing any movement during cutting.

Step 3: Activating the Vacuum System

Once the fabric lay and the perforated underlayer paper roll are in place, the CNC machine’s vacuum system is activated. The vacuum pulls air through the holes in the punch hole paper, creating a strong suction force.

This vacuumization compresses the fabric layers firmly onto the cutting table, stabilizing the entire lay for precise cutting.

Step 4: CNC Cutting Process

With the fabric lay securely held by the vacuum through the perforated lay paper, the CNC auto cutter follows the CAD-generated marker paths to cut the garment components.

The stability provided by the perforated paper roll ensures:

• Minimal fabric shifting or distortion.

• High cutting accuracy and clean edges.

• Efficient fabric utilization with reduced waste.

Step 5: Removing the Cut Components

After cutting, the vacuum is released, and the cut fabric pieces are lifted from the table. The perforated underlayer paper roll remains on the table, ready for the next fabric lay.

This paper is durable enough to withstand multiple cutting cycles, depending on the GSM and quality.

Advantages of Using Perforated Underlayer Paper Roll in Garment CAD Auto CNC Machines

• Enhanced Cutting Precision: The vacuum suction through the perforations holds fabric layers firmly in place.

• Reduced Fabric Waste: Stable lays prevent fabric movement, improving marker efficiency.

• Compatibility: Works with various CNC auto cutters such as Lectra, Gerber, Bullmer, Morgan Tecnica, Eastman, FK Group, Tukatech, Shima Seiki, and Yin.

• Customizable Sizes: Available in multiple widths and GSM to suit different machine and fabric requirements.

• Durability: Made from recycled kraft paper, it is strong enough for industrial cutting environments.

Conclusion

The perforated underlayer paper roll (also called perforated lay paper, punch hole paper, or perforated paper roll) is an indispensable component in garment CAD auto CNC cutting machines. By enabling vacuum suction to stabilize fabric lays, it ensures precise, efficient, and high-quality cutting essential for modern garment manufacturing.

For garment factories aiming to enhance cutting room productivity and fabric utilization, investing in high-quality perforated underlayer paper rolls is a smart choice.

At Satvajr.com, we provide premium perforated lay paper rolls tailored for all major CNC auto cutters, helping garment manufacturers achieve optimal cutting results every time. Contact us to learn more about our products and how they can improve your cutting process.