PP Staple Fibre for Geotextile
6 D · 90–102 mm · ≥ 5.5 cN/dtex · white · UV masterbatch 2 %
Spun on XILINK's own staple-fibre line, which makes one product only: high-tenacity PP staple fibre for needle-punched geotextile. 100 % virgin fibre-grade PP, UV masterbatch in the melt, cut to the lengths your card runs best at. Every value is a specification limit tested to a named GB/T method, and every bale traces back to its batch test report.
- Mass per unit area≥ 400 g/m²
- CBR puncture≥ 3 800 N
- Opening size O90≤ 0.08 mm
- Strip tensile≥ 23 kN/m
The four numbers in the black box are one example — a river-bank revetment tender's acceptance values for 400 g/m² fabric. Your mill makes other grades too; the same mapping holds for a 150 g/m² separation layer or an 800 g/m² geobag fabric. Every fibre value below is tied to a fabric property, to one machine on your line, and to one batch number.
40 seconds on the line: resin in, pressed bales out
One line, one product. The film follows the fibre in the order it is made; the fibre on the line that day was the black grade.
- Virgin PP resin in sealed bags
- Spinning & drawing — where tenacity is set
- Crimped fibre, straight off the crimper
- Baled & strapped on the baling press
- Finished bales in the mill warehouse
One ruler, two scales — whichever unit your tender wrote "5.5" in, this fibre clears it
Mills and their customers say "tenacity 5.5" and mean two different things: mills in China quote cN/dtex, many South-Asian tenders and Indian suppliers quote grams per denier. The two scales sit on the same line below; 1 cN/dtex = 1.133 g/den.
1 cN/dtex = 1.133 g/den. Read across: a tender that asks for 5.5 g/den is asking for 4.85 cN/dtex, and this fibre is specified at 5.5 cN/dtex or above — about 6.2 g/den.
What the number is measured on
- Polymer100 % virgin fibre-grade polypropylene homopolymer. No recycled or regenerated content — this is what keeps tenacity above the line, batch after batch.
- Test methodGB/T 14337 (ISO 5079 equivalent): single fibres, 10 mm gauge, 20 mm/min.
- Tenacity CV≤ 12 % — a fibre that averages 5.5 but scatters widely makes a fabric that fails CBR in patches.
- Check it yourselfThird-party lab test (SGS / Intertek) on any batch, arranged on request — how each batch is proven
Tap the sheet to open the full 2-page PDF
Lot PPSF-20260924: four grades, eleven properties, every one within the spec sheet
The mill QC tested one sample of each grade on 24 September 2026 and wrote the results by hand. The report types them out on page 1 and keeps the scanned bench sheet on page 2. The 3 D sample was cut at 64 mm, inside the 51–102 mm on-request range.
| Tenacity, cN/dtex | 3 D | 4.5 D | 6 D | 9 D |
|---|---|---|---|---|
| Measured | 5.7 | 5.9 | 6.0 | 5.7 |
| Sheet minimum | ≥ 5.5 · pass | |||
A spec sheet pre-filled for one geotextile line — an example, change any line for yours
The ticked options are what one geotextile mill asked us for, for a 400 g/m² revetment fabric on a roller-card line. They are an example, not the range: the grey options are the rest of what our line spins, and every line is set for your card and the grades you make. Under each value: why it is that value, and which standard it is tested to.
All four grades, side by side
Values that span the row apply to every grade. Denier is the mill's grade name; dtex is the tested value (1 D = 1.111 dtex).
Swipe sideways — the first column stays put.
| Property | Unit | 3 D | 4.5 D | 6 D | 9 D | Method |
|---|---|---|---|---|---|---|
| Nominal linear density | dtex | 3.3 | 5.0 | 6.7 | 10.0 | GB/T 14335 · ISO 1973 |
| Linear density deviation | % | ≤ ± 5.0 | GB/T 14335 | |||
| Nominal cut length | mm | 76 · 90 · 102 (51–102 on request) | GB/T 14336 | |||
| Breaking tenacity | cN/dtex | ≥ 5.5 (≈ 6.2 g/den) | GB/T 14337 · ISO 5079 | |||
| Elongation at break | % | 30 – 60 | GB/T 14337 · ISO 5079 | |||
| Tenacity CV | % | ≤ 12 | GB/T 14337 | |||
| Crimps | per 25 mm | 6 – 10 | GB/T 14338 | |||
| Over-length fibre | mg / 100 g | ≤ 20 | GB/T 14336 | |||
| Defects (fused / hard fibre) | mg / 100 g | ≤ 25 | GB/T 14339 | |||
| Oil (spin finish) content | % | 0.4 – 0.8 | GB/T 14340 | |||
| Moisture regain | % | ≤ 0.05 | GB/T 6503 | |||
| Density | g/cm³ | 0.91 | — | |||
| Melting point | °C | 165 – 173 | — | |||
What 6 – 10 crimps per 25 mm looks like
The waves in the tow are the crimp. They give the carded web its grip before the needles reach it. Geotextile fibre runs lower crimp than textile fibre so the web stays open and lofty.
The fibre on the line that day was the black grade; white is the same fibre without carbon black. Across the four grades of lot PPSF-20260924 the mill measured 7.66 – 9.1 crimps per 25 mm.
Your customer's specification, clause by clause: what the fibre answers for, and what your line answers for
The four values below are one example — a river-bank protection specification for 400 g/m² needle-punched PP geotextile. Whatever grade your customer asks for, the split is the same. A fibre supplier who claims all four is hiding the half that belongs to your needle loom.
Follow one batch number from the spinning line to twelve months after it lands
What you fear is a spec sheet that says one thing and bales that say another. So every batch leaves a paper trail you can hold up against the sheet at any point in the next year.
Send the spec sheet as it stands — or change a line — and get a mill-direct per-ton quote with the container plan
Four steps cleared, the price is the only thing left. Geotextile mills write to us directly; agents and indenters quoting on behalf of a mill are welcome too — tell us which mill the fibre is for.
One line, one product, no trader in between
Our line spins one thing: PP staple fibre for needle-punched geotextile. The quote is the mill price. The test report is our own lab's. A change of cut length or crimp is an instruction to our own shift, not a request passed through a middleman.
What every order comes with:
- 1Mill-direct quote per ton, FOB / CIF / DAP as you name it, bale count and 40′ HQ plan included
- 2Mill test report on the sample lot before you commit a container
- 3Balance paid only after the pre-shipment photos and lab sheet reach you
Prefer to talk first? WhatsApp +86 175 1538 2215 or [email protected]
Request a fibre quote
The spec line is pre-filled from the sheet above. Edit it if your line needs something else.
Is "tenacity 5.5" in cN/dtex or g/den?
Chinese mill certificates use cN/dtex; many tenders and Indian suppliers use g/den. 5.5 g/den is 4.85 cN/dtex. Our specification minimum is 5.5 cN/dtex, about 6.2 g/den, so it clears the requirement in either unit. Say which unit your tender uses and the quote will state both.
Can the cut length, crimp or finish be changed for our card?
Yes. Cut length from 51 to 102 mm, crimp level and spin-finish content are set on the line, not in the polymer. Changing them does not change the raw material, and the mill test report shows the values actually produced.
Does 2 % UV masterbatch guarantee the fabric passes a weathering test?
No. 2 % is the additive loading in the melt. Retained strength after xenon-arc exposure (ASTM D4355) or EN 12224 is a property of the finished geotextile and depends on mass, colour and needling as well as the fibre. We can arrange that test on a roll of your fabric.
Can I see a real test report before I order?
Yes. The mill test report for lot PPSF-20260924 is here as a PDF: four grades, typed results with the scanned handwritten bench record, stamped by our QC. Your own sample lot gets the same report before you commit a container.
How is the fibre packed and how much fits a 40′ HQ?
Pressed bales wrapped in PP woven fabric. Bale weight and size depend on the press setting, so the exact bale count and tonnage per 40′ HQ are written on the quotation rather than guessed here; the landed price per ton is then arithmetic.
Is the fibre from your own mill?
Yes. XILINK runs its own staple-fibre line, and it makes one product only — PP staple fibre for needle-punched geotextile. That is why the batch test report is ours, why a change of cut length or crimp is set on our own line, and why the quote is the mill price with no trader in between.
Do you supply the finished geotextile too?
Yes — needle-punched and woven geotextile, geomembrane, geogrid, geocell and GCL from audited Chinese mills. If your project buys fabric rather than fibre, start at the geotextile page below.