Polyester does not rust. Mine water, acid rain and coastal salt fog leave it unchanged — there is no galvanising to wear through and no weld points to break.
Burns only while a flame is applied and extinguishes once the source is removed, with no molten drip. Measured flame time ≤ 2.9 s; afterglow ≤ 2.2 s.
A conductive additive keeps surface resistance inside the safe band, so the net does not build up charge, does not attract dust, and cannot throw a spark.
UV stability comes from the polyester molecule itself rather than a surface coating that erodes — specified for a 20-year service life.
A single strand breaks at 2746 N. Across a one-metre width the knitted mesh carries 102 kN/m.
At 0.8 kg/m² it is a fraction of the weight of a welded steel mesh of comparable pitch — one person can carry and place a roll.
Other widths and roll lengths can be produced to order. Send your run dimensions and we will calculate the roll count, allowing for overlap and wastage.
High-tenacity polyester yarns are warp-knitted into a continuous mesh. The knitted structure is what carries load across the roll — there is no border rope and no woven edge to fail.
The mesh is coated with a flame-retardant and anti-static polymer. These two additives exist because underground regulations require them — a net that burns, or that accumulates static charge, cannot go underground at all.
Every production lot is sampled and tested for strand diameter, break load, elongation, flame time and surface resistance before release. Results are recorded per batch, not per catalogue.
Break load on the current grade has been verified by an accredited national labour-protection testing centre (report 2025-004). That report, the batch record and the certificate of origin travel with the goods.
Calibrated flame, timed
A specimen is held in a calibrated flame for the time the standard sets, then withdrawn. The material has to self-extinguish inside the limit and must not drip molten polymer.
Surface resistance, in ohms
Surface resistance is measured on the coated strand with a ring electrode. The reading has to stay below the ceiling the underground regulation sets.
Break load, in newtons
One strand is pulled in a universal testing machine until it parts. Break load and elongation are recorded against the batch, not against a catalogue.
A sample kit contains two 15 × 15 cm panels cut from production stock — one at 3.0 mm strand diameter, one at about 2 mm — and is credited back in full against your first roll order.
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Xuzhou Weikelao Mining Technology Co., Ltd.