A technical textile is like a special kind of fabric that is specifically made to perform certain functions. For example, some technical textiles can be waterproof or fire-resistant, while others might be used for medical purposes like stitching up cuts or helping to support broken bones.
Think about the clothes you wear every day. They are made from fabrics like cotton or polyester that are soft and comfortable, but they aren't really meant to do anything other than cover your body. Technical textiles are different because they have special properties designed to solve problems or make things better in some way.
So, let's say you are building a tent to go camping. You would want the tent to be made out of a technical textile that is waterproof, so that if it rains you don't get wet. Or maybe you have a job where you work with dangerous chemicals, and you need a suit made out of a technical textile that is resistant to those chemicals so that you don't get hurt.
Technical textiles can be made out of all sorts of materials, from the natural fibers that we talked about earlier to synthetic materials like nylon or Kevlar. Sometimes they are even made out of special metals or ceramics!
In summary: A technical textile is a kind of fabric that has special properties designed to solve problems or make things better in some way. They can be used for all sorts of things, like making tents or protecting people who work with dangerous chemicals.