Dimensional Control
Controlled moisture exposure testing measures how well treated flax yarns or fabrics maintain their physical dimensions under high humidity. Laboratory testing utilizes humidity chamber stability as a metric to evaluate the resistance of finished textiles to environmental distortions. This value helps manufacturers anticipate how garments or industrial fabrics will behave when shipped through different climate zones.
It establishes a baseline for predicting dimensional change during maritime transport and storage.
Moisture Equilibrium
Testing begins by placing the flax samples inside a sealed chamber with programmed relative humidity and temperature levels for a specified duration. The specimens are weighed and measured before and after the exposure to determine moisture absorption and percentage shrinkage or extension. Linen fibres are highly hygroscopic and swell significantly when exposed to moisture, making this test critical for garments that require a precise fit.
Engineers record these measurements on the material performance datasheet to guide finishing processes like sanforization or resin treatment. If the sample shows poor stability, the mill adjusts the finishing parameters to lock in the dimensions.
Fabric Performance
High stability guarantees that the fabric will not puck or distort during retail storage or consumer wear. It also ensures that the material can be cut and sewn with high precision in garment factories. This quality is verified before shipping the batch to the distributor.
