Polyester functional base fabric and high tenacity polyester fabric are both made from polyester fibers, but they have some key differences in terms of their properties and applications.

The polyester functional base fabric is a type of polyester fabric that is designed for use as a base material in the production of other products. It is typically used in applications such as laminates, coatings, and composites. This type of fabric is often treated with special finishes to enhance its properties, such as water resistance, flame retardancy, or UV protection. The polyester functional base fabric is often lightweight and flexible, making it a versatile choice for a wide range of applications.

High tenacity polyester fabric, on the other hand, is designed for use in applications that require high strength and durability. This type of fabric is made from polyester fibers that have been specially treated to increase their strength and resistance to wear and tear. High tenacity polyester fabric is often used in products such as sails, tarps, and heavy-duty bags. It is typically thicker and heavier than polyester functional base fabric, and it is less flexible but more resistant to tearing and abrasion.

In summary, the main difference between polyester functional base fabric and high tenacity polyester fabric is their intended use and their properties. The polyester functional base fabric is lightweight and flexible, and it is typically used as a base material in the production of other products. High tenacity polyester fabric, on the other hand, is heavy-duty and durable, and it is designed for use in applications that require high strength and resistance to wear and tear.