Using chemicals to regulate functioning of ventilation points in a fabric or flexible substrate

摘要

A process of providing ventilation points on a flexible substrate includes treating the flexible substrate with a chemical or a combination of chemicals that react to an environmental factor; and using that reaction to the environmental factor to regulate functioning of the ventilation points prepared on the substrate. A ventilated substrate includes ventilation points in the substrate; and a chemical or combination of chemicals applied to the substrate that regulate the ventilation points in response to an environmental factor.