What is a Blister?

A blister, in the context of textiles, refers to a raised, bubble-like area on the surface of a fabric. It is typically caused by heat, moisture, or chemical reactions during the manufacturing or finishing processes. Blistering can occur when different layers or components of a fabric, such as coatings, finishes, or laminates, delaminate or separate, creating air pockets or bubbles. Blistering can also happen when moisture or heat causes the fabric fibers to swell or expand, resulting in localized areas of raised texture. Blistering is considered a defect in textiles, as it compromises the overall appearance and quality of the fabric.