Auxiliary materials decide a ceramic textile's grade
Viscose or polyester as the spinning aid, glass filament or wire as reinforcement: these choices set the class of the finished cloth, tape, rope and packing.
Ceramic fiber is an inorganic short fiber and cannot be spun on its own. An organic carrier is added so the fiber can be drafted into yarn, and only then woven into cloth and tape or braided into rope and packing. Glass filament or metal wire may be added for strength.
The carrier burns out completely in service. Viscose, made from wood pulp, cotton linters, bagasse or reed, decomposes mainly to carbon dioxide and water with little soft ash. Polyester, a PET or PBT polymer, leaves a harder residue and behaves differently in the furnace.
What changes with the choice
Viscose gives a softer hand, fewer hard inclusions after burn-out and better drape, which matters for seals and door curtains. Polyester is cheaper and stronger in the greige state but leaves a firmer residue. Reinforcement follows the mechanical duty: glass filament keeps dielectric strength, 304 or 310 stainless wire adds tensile strength and conductivity.
Reference note. Figures and standard references are indicative and do not replace the project specification, the current edition of the standard, or product test reports for the specific supply.