Tensile strength and pleating.
Preliminary tests on tensile strength and pleating show that permanent heat-set pleats in polyester fabrics don't weaken them. Pleated samples exhibited similar strength to non-pleated ones, indicating pleats have no adverse effects on fabric strength.
✧ Permanent pleats retain fabric strength
✧ No adverse effects on tensile strength
Water Exposure
Soaking tests with deionized water on polyester fabrics show no adverse effects on mechanical strength. Samples soaked for 10 minutes and air-dried displayed unchanged strength, indicating deionized water cleaning poses no risk to fabric integrity.
✧ No strength loss from soaking
✧ No adverse effects
Light Ageing
Light ageing tests indicate polyester fabric's tensile strength remains unaffected even after 80 years of museum illumination. Additionally, the techno pre-treatment on 'spattering' showed no adverse effects on fabric durability, ensuring long-term stability.
✧ Unaffected tensile strength after 80 years
✧ Techno pre-treatment ensures durability
Heat Ageing
Heat ageing tests at 60ºC for three months showed no alteration in mechanical properties for plain polyester fabric or 'spattering'. Subsequent testing at 80ºC for two months also revealed unchanged tensile strength, confirming the exceptional stability of the polyester fabrics.