Knife Coating vs. Lamination vs. Calendaring – Which is Best

Knife Coating vs. Lamination vs. Calendaring –
Which is Best for PVC-Coated Fabrics?

When choosing PVC-coated polyester fabrics, the coating process determines quality, durability, and performance. The three main methods are Knife Coating, Lamination, and Calendaring. Here’s what you need to know.
 

1. What is Knife Coating?

 

Knife coating is the premium method for applying PVC to polyester fabric. A liquid PVC paste is spread evenly with a precision knife blade, layer by layer. This creates strong adhesion, a smooth finish, and long-term outdoor durability.

• ✅ Advantages:

  • Strongest bond between PVC and fabric

  • Long lifespan (5–15 years outdoors)

  • Excellent flexibility and peel resistance

  • Customizable thickness and surface texture

• Best For: Truck covers, tarpaulins, tents, inflatable structures, pool liners, biogas domes.

2. What is Lamination?

 

Lamination bonds a pre-made PVC film to the fabric using adhesive or heat. While cheaper, it can have delamination issues over time and offers lower outdoor durability.

• ✅ Advantages:

  • Lower cost than knife coating

  • Lightweight and easy to handle

• Limitations:

  • Moderate adhesion strength

  • Shorter outdoor life (3–8 years)

• Best For: Light-duty tarps, indoor covers, temporary structures.
   

3. What is Calendaring?

 

Calendaring uses rollers to press PVC onto the fabric. This is the most economical option, but with limited coating penetration and flexibility.

• ✅ Advantages:

  • Lowest cost option

  • Suitable for basic applications

• Limitations:

  • Moderate adhesion

  • Lower flexibility

  • Not ideal for heavy-duty or long-term use
     

Why Choose Knife-Coated PVC Fabric?

If you need maximum durability, weather resistance, and performance, knife coating is the clear winner. It’s the industry standard for heavy-duty tarpaulins, truck covers, inflatables, and industrial structures.

Looking for high-quality knife-coated PVC fabrics? We manufacture premium-grade materials for tarpaulins, tents, pool liners, and custom applications.