Quality
How we make and test our metallic yarn
We work to published execution standards and test under fixed laboratory conditions. The conditions and known limits are listed here so you can plan your own process.
Execution standards
FZ/T 63026-2015
Execution standard for our yarn.
T/ZZB 3490-2023
Zhejiang Made group standard, followed by the JX, CX and SX series.
An execution standard describes how the yarn is made and tested. It is not a third-party certification.
Laboratory test conditions
These are laboratory conditions, not a guarantee of performance in every production process. Test your own process before bulk production.
| Test | Condition |
|---|---|
| Ironing | 110 °C for 15 s |
| Dry heat | 180 °C for 60 s |
| Acid treatment | pH 4.7, 60 °C for 30 min (10% acetic acid) |
| Hot water | 90 °C for 30 min |
| Hand wash | 0.5% soap + 0.2% sodium carbonate, 60 °C for 30 min |
| Rubbing | 200 g, 100 cycles |
| Dry cleaning | 25 °C for 30 min (trichloroethylene / perchloroethylene / petroleum benzine) |
| Steam | 100 °C for 40 min |
| Boiling water | 30 min to 1 h |
| Acid solution | 2% oxalic acid or 2% acetic acid, 60 °C for 10 min |
| Scouring | soda ash 1 g/L, 60 °C for 30 min (nylon / polyester / rayon / acetate / cotton) |
Use limits
- Aluminium film is not alkali-resistant.
- Silver film is not acid-resistant.
- Silver darkens with sulphides.
- Stretching and heavy rubbing can peel the metal layer.
- Test before production.
Ask about a specific process
Send us the series, count and the process you plan to use. We will confirm the test conditions that apply.