A needle-punched nonwoven pad drains beautifully but stretches 60% and lets a loaded dump truck punch through a saturated clay subgrade; a plastic mesh grid grabs aggregate but cannot keep fine silt out of the crushed-stone base. The Woven Geotextile — Woven Geotextile PP Polypropylene Propylene Polyethylene Flat Yarn 100-400g/m2 20-15 to 100-70 KN/m 1-8m Wide Separation Stabilization Reinforcement Filtration Road Railway Dam Harbor Soft Soil Foundation HC Geosynthetic hcgeosynthetic.com​ is the HC Geosynthetic (hcgeosynthetic.com, blown-film/weaving lines, PP flat-yarn loom construction, smooth+textured HDPE geomembrane sibling) answer that stays in the woven lane on purpose: two sets of parallel PP flat yarns interlaced on a loom, 100–400 g/m², MD/TD break 20-15 to 100-70 KN/m, 1–8 m wide, low elongation (~25%), and the four-function job of separation + stabilization + reinforcement + slow filtration. But why does a slit-film woven beat nonwoven on a haul road over peat, how does 100-70 KN/m MD strength spread wheel load so the aggregate does not rut, and what makes the flat-yarn weave the real spec—not the 200 g/m² weight? Below is the full breakdown for road engineers, railway embankment planners, dam-coast contractors, and HC Geosynthetic distributors evaluating a fabric whose real spec is “PP flat-yarn woven, 100–400 g/m², 20-15→100-70 KN/m, 1–8 m, low elong, HC,” not “landscape fabric” in a garden search.

Why this is a PP flat-yarn woven geotextile, not a needle-punched nonwoven pad

The Woven Geotextile — Woven Geotextile PP Polypropylene Propylene Polyethylene Flat Yarn 100-400g/m2 20-15 to 100-70 KN/m 1-8m Wide Separation Stabilization Reinforcement Filtration Road Railway Dam Harbor Soft Soil Foundation HC Geosynthetic hcgeosynthetic.com​ rests on five reconciled facts—flat-yarn woven vs needle-punched nonwoven load path, low elongation vs high stretch, 20-15→100-70 KN/m grade band vs GSM-only nonwoven spec, 1–8 m panel width vs felt roll, and HC Geosynthetic extrude-slit-weave closure:
  • Interlaced Flat Yarn Carries Tensile Load; Needle-Punched Fibre Web Flows.​ A nonwoven pad is random PP fibre locked by barbs—high permittivity, high elongation (50%+), low wide-width tensile (often <20 KN/m) . A woven geotextile interlaces warp (MD) and weft (TD) PP flat yarns on a loom so the load transfers yarn-to-yarn; MD break runs 20→100 KN/m, TD 15→70 KN/m, elongation capped ~25% . The HC node line “made of polypropylene and propylene-polyethylene flat yarns as raw materials and consists of at least two sets of parallel yarns (or flat yarns)” is the load-path statement: woven is chosen because the fabric must act as a tension membrane over soft ground, not a drainage felt. For an AASHTO M288 Class 2 separation spec the survivability numbers come from wide-width tensile (ASTM D4595), not GSM.
  • Low ~25% Elongation Is The Haul-Road Number, Not A Defect.​ A nonwoven under a wheel load stretches, conforms, and lets the aggregate punch into the clay; a flat-yarn woven at <25% elongation holds dimension, spreads the load to a 3× footprint, and stops the 10 cm crushed-stone layer from disappearing into peat . The HC/industry spec “Elongation Rate % ≤ 28 (typical ~25)” is the reason road-base specs mandate woven for separation/stabilization—same logic as the prior geomembrane article where textured face (not thickness) was the slope axis, here elongation (not weight) is the structural axis.
  • 20-15 To 100-70 KN/m Grade Band Covers Driveway To Railway Embankment From One Loom.​ A 20-15 grade (MD 20 / TD 15 KN/m, ~120 g/m²) stabilizes a parking yard; a 100-70 grade (MD 100 / TD 70 KN/m, ~400 g/m²) reinforces a railway embankment on soft marine clay . The long-tail “20-15 to 100-70 KN/m” is the grade-statement; 100–400 g/m² is just the areal density that tracks the grade. Specifying by KN/m (ASTM D4632 grab / D4595 wide-width) beats specifying by GSM, the same way micron band beat roll length on the Orchid PVC article.
  • 1–8 m Width Cuts Seams On A 7 m Pavement Bay.​ A nonwoven rolls at 3–5 m and doubles seam count on a highway lane; the HC woven slices to 1–8 m (common 4 / 5.8 / 7 m) so a 7 m road bay lays in one panel, seam only at roll end . The node “width max 6–8 m, length as client request” is the lay-statement: fewer seams = fewer failure planes under traffic.
  • HC Geosynthetic Closes The Woven PO.​ HC Geosynthetic (hcgeosynthetic.com, PP flat-yarn extrusion + slitting + loom weaving + ultrasonic slit-edge, 100–400 g/m², 20-15→100-70 KN/m, 1–8 m, pairs with HDPE geomembrane and nonwoven for composite cell systems) makes the roll and ships it core-wound . For a SE-Asia highway contractor the path is: pick 50-35 grade (MD 50 / TD 35 KN/m, 240 g/m²) × 7 m wide × 150 m roll → HC extrudes PP flat yarn → weaves → ultrasonically slits edge → rolls → FOB Ningbo. One PO covers woven (separation) + nonwoven (filter) + HDPE (seal) for a full road-section lining. Same closure logic as prior industrial-supplier articles, translated to geotextile weaving.

HC Geosynthetic / hcgeosynthetic.com supply context

From the node (/materials/woven-geotextile/, hcgeosynthetic.com) + industry flat-yarn PP woven norm (GB/T 17690, AASHTO M288, ASTM D4595/D4632/D4491) :
  • Maker:​ HC Geosynthetic
  • Site:​ hcgeosynthetic.com
  • Product:​ Woven Geotextile
  • Material:​ Polypropylene (PP) + propylene-polyethylene flat yarn, two sets parallel warp/weft
  • Weight:​ 100–400 g/m² (120 / 160 / 200 / 240 / 280 / 340 / 400 g/m² steps)
  • Grade (MD/TD break KN/m):​ 20-15, 30-22, 40-28, 50-35, 60-42, 80-56, 100-70
  • Elongation:​ ≤28% (typical ~25%)
  • Trapezoid tear:​ 0.17–0.72 KN (MD), rises with grade
  • CBR burst:​ 1.2–7.5 KN
  • Permeability:​ 10⁻¹–10⁻⁴ cm/s (vertical), O₉₀ 0.07–0.5 mm
  • Width:​ 1–8 m (4 / 5.8 / 7 m common)
  • Length:​ Per client (50–210 m/roll typical)
  • Functions:​ Separation, stabilization, reinforcement, filtration (slow), weed suppression in agriculture
  • Use:​ Road/subgrade, railway embankment, dam slope, harbor soft-soil foundation, river coast, landfill cell base, aquaculture pond separator, agricultural weed mat
  • URL:​ https://www.hcgeosynthetic.com/materials/woven-geotextile/

Key characteristics and application scope

  • Product Name:​ Woven geotextile
  • Resolved family:​ Woven Geotextile PP Flat-Yarn (slit-film)
  • Alternate Terms:​ HC Geosynthetic PP woven geotextile 100-400g/m2 20-15 to 100-70 KN/m 1-8m wide soft soil stabilization fabric, polypropylene flat yarn woven geotextile for road railway dam harbor separation reinforcement, hcgeosynthetic.com slit-film woven geotextile AASHTO M288 Class 2
  • Fabric class:​ PP flat-yarn woven geotextile (not needle-punched PP nonwoven, not PET monofilament woven, not plastic mesh grid)
  • Core Applications:
    • Highway/unpaved road subgrade​ — 50-35 or 80-56 grade, 7 m wide, separates clay subgrade from crushed-stone base, cuts rutting 40%
    • Railway embankment on soft clay​ — 100-70 grade under ballast, distributes train axle load, stops mud pumping
    • Dam slope / harbor reclamation​ — 60-42 grade, separates fill from soft marine foundation, pairs with nonwoven filter
    • Agricultural weed mat​ — 100–120 g/m² black woven, permeable, suppresses grass under drip line
    • Non-use cases:​ French drain core wrap (use nonwoven for high permittivity), geomembrane cushion on sharp rock (nonwoven punctures better), potable-water contact without food-grade PP cert
  • Companion logic:​ Same HC PO pairs woven (separation) + nonwoven (filtration) + HDPE geomembrane (seal) for cell-base composite.

Application logic by buyer type

  • Road Engineer (EU bypass, 9 km):​ 50-35 grade × 7 m × 150 m, AASHTO M288 Class 2, FOB Ningbo 30 d, one panel per lane bay.
  • Railway Contractor (Africa corridor):​ 100-70 grade × 5.8 m, ballast/subgrade separation, mud-pump control.
  • Dam Builder (SE Asia irrigation):​ 60-42 grade slope separator, nonwoven 300 g/m² over it for filter, HDPE 1.5 mm below for seepage cut.
  • Farm Operator (AU orchard):​ 100 g/m² black woven weed mat, 4 m wide, 200 m roll, drip-line permeable.

Procurement and spec checklist

When specifying Woven Geotextile — Woven Geotextile PP Polypropylene Propylene Polyethylene Flat Yarn 100-400g/m2 20-15 to 100-70 KN/m 1-8m Wide Separation Stabilization Reinforcement Filtration Road Railway Dam Harbor Soft Soil Foundation HC Geosynthetic hcgeosynthetic.com:
✅ Yarn​ — PP flat yarn (propylene-polyethylene blend), virgin resin preferred, UV stabilized optional.
✅ Weave​ — two sets parallel warp/weft interlaced, not knitted, not nonwoven.
✅ Grade​ — specify MD/TD break KN/m (20-15 … 100-70), not GSM alone.
✅ Weight​ — 100–400 g/m² tracks grade (120 g≈20-15, 400 g≈100-70).
✅ Elongation​ — ≤28% (typical ~25%) at break.
✅ Width​ — 1–8 m, length per client, ultrasonic slit edge.
✅ Functions​ — separation + stabilization + reinforcement primary; filtration secondary (O₉₀ 0.07–0.5 mm).
✅ Maker​ — HC Geosynthetic, hcgeosynthetic.com, AASHTO M288 / GB/T 17690 class, FOB Shanghai/Ningbo.

Conclusion: The yarn carries the load, the weave holds the soil, the grade is the spec

The Woven Geotextile — Woven Geotextile PP Polypropylene Propylene Polyethylene Flat Yarn 100-400g/m2 20-15 to 100-70 KN/m 1-8m Wide Separation Stabilization Reinforcement Filtration Road Railway Dam Harbor Soft Soil Foundation HC Geosynthetic hcgeosynthetic.com​ is not a needle-punched nonwoven pad that stretches and pumps mud and not a plastic mesh that cannot keep silt out of the base. It is the HC Geosynthetic flat-yarn answer: PP/propylene-polyethylene slit-film yarns extruded, stretched, and interlaced warp×weft so MD strength runs 20→100 KN/m and elongation stays ≤28%, 100–400 g/m² tracking the grade, 1–8 m width to lay a 7 m pavement bay in one panel, and the four-function job—separation of clay/subgrade from aggregate, stabilization of soft ground under wheel load, reinforcement of embankment fill, and slow filtration (O₉₀ 0.07–0.5 mm, 10⁻¹–10⁻⁴ cm/s) where water must weep but fines must not migrate. Made by HC Geosynthetic (hcgeosynthetic.com, PP flat-yarn extrude-slit-loom line, pairs with HDPE geomembrane and nonwoven geotextile) beside the blown-film liner from the prior article. Its metric is “PP flat-yarn woven, 100–400 g/m², 20-15→100-70 KN/m, 1–8 m, low elong, HC,” not “weed barrier” in a nursery autocomplete.

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