Moisture Removal
A laboratory prep procedure heats a textile sample to remove all absorbed moisture before weighing it. The process of oven drying is used to determine the dry mass of a material for yarn count or fiber blend analysis. It provides a standard baseline for calculating the commercial weight of textiles, ensuring that moisture absorbed from the ambient air does not skew transaction values.
The testing process halts when successive weight measurements show no further change.
Thermal Chamber
The drying chamber is maintained at a standard temperature of one hundred and five degrees Celsius to evaporate water without degrading the fiber. Samples are weighed at regular intervals until the mass remains constant. This constant weight represents the dry mass of the material.
Weight Measurement
Inaccurate temperatures can lead to incomplete drying or thermal damage to synthetic fibers. If the oven is too hot, polyester or nylon fibers may melt or oxidize, altering the weight. The temperature is regulated to ensure consistent results.
Process Limit
Testing laboratories use this procedure to prepare samples for composition tests and to determine moisture regain. The dry weight is the starting point for all calculations in commercial fiber transactions. This method is used for both natural and synthetic fibers.
