Wet Processing

Learn about water repellency in fabrics: how it differs from waterproof, finish types, PFAS-free options, a padding recipe and spray, oil and head tests.

Learn what a sequestering agent does in textile wet processing, types like EDTA, phosphonates and gluconate, where to use them, dose maths and greener options.

Learn the scouring process in textiles: why it is done, how it works, main methods, chemicals, a worked cotton recipe, quality tests and fixes for problems.

Learn the desizing process in textiles: why size is removed, enzyme, acid, oxidative and rot steep methods, a worked recipe, size add-on maths, tests and fixes.

Learn what acid dyes are, with examples, levelling, milling and metal-complex types, how they dye wool, silk and nylon, a worked recipe, pros, cons and safety.

Learn what synthetic dyes are, how they are grouped into acid, basic, direct, reactive, disperse, vat, sulfur and azoic classes, with uses, safety and examples.