BioD-Mat® 70
Woven bristle coir soil erosion control blanket
BioD-Mat® 70 blanket is completely biodegradable and does not contain any synthetic materials to harm wildlife.
RoLanka’s BioD-Mat® 70 soil erosion control blanket is engineered from machine-spun bristle coir twines made from freshwater-retted coconut husks, providing superior strength, durability, and reduced acidity. BioD-Mat 70 is a woven bristle coir (coconut fiber) erosion-control blanket with a minimum weight of 780 g/m² (23 oz/SY). Because it is composed exclusively of high-quality bristle coir—rather than mixed or unretted fibers—BioD-Mat 70 provides superior strength, durability, and long-term performance compared to similar coir blankets. This semi-permanent, 100% biodegradable woven coir blanket delivers high initial resistance against erosion while supporting vegetation establishment and long-term site stability. The open weave also enables reseeding and planting before or after installation without cutting the mat. The 0.5 in x 0.5 in opening in the blanket allows planting plugs through the blanket without cutting the blanket. The 9.84 ft. (3m) and 13.1 ft. (4m) wide blankets have one seam in the mat.
With a functional field longevity of 4–6 years, BioD-Mat® 70 blanket offer performance levels beyond the design limits of many other biodegradable erosion control blankets.
Recommendation for choosing a woven coir blanket.
When selecting and specifying woven coir mats, designers should not only consider the unit weight, but also the wet tensile strengths, coir type, open area as well as machine direction and cross direction twine counts.
Resources
Print specification of BioD-Mat® 70
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BioD-Mat® 70 blanket is available in 4 different roll sizes.
- 3.28 ft x 83 ft = 30 SY/roll (1m x 25m =25 m2/roll)
- 6.56 ft x 166ft= 120 SY/roll (2m x 50m =100 m2/roll)
- 9.84 ft x 166 ft = 180 SY/roll (3m x 50m =150 m2/roll)
- 13.1 ft x 83 ft= 120 SY/roll (4m x 25m =100 m2/roll)
Price:
Price range: $200.00 through $1,900.00
Specifications
| Property | Test Method | BioD-Mat® 70 |
| Weight | ASTM D 3776 | 23 oz/SY (780 g/sq.m) |
| Dry tensile strength | ||
| Machine direction | ASTM D 4595 | 1740 lbs./ft (25.4 kN/m) |
| Cross direction | ASTM D 4595 | 1176 lbs./ft (17.2 kN/m) |
| Wet tensile strength | ||
| Machine direction | ASTM D 4595 | 1488 lbs./ft (21.7 kN/m) |
| Cross direction | ASTM D 4595 | 1032 lbs./ft (15.1 kN/m) |
| Elongation at failure Wet | ||
| Machine direction | ASTM D 4595 | 38% |
| Cross direction | ASTM D 4595 | 25% |
| Open area | Calculated | 48% |
| Thickness | ASTM D 1777 | 0.35 in (9 mm) |
| Minimum Twine Count | ||
| MD x CD (per foot) | 27 x 18 | |
| Recommended slope | > 1:1 | |
| Recommended flow | 12 fps (3.7 m/s) | |
| Recommended shear stress | 4.5 lbs./sq. ft. (215 N/sq.m) | |
| Fiber type in twine | Brown bristle coir fiber | |
Applications
- Wetland restoration
- Streambank restoration
- Slopes stabilizations in slopes > 1:1
- High flow channels
Advantages
- 100% biodegradable.
- Economical compared to synthetic mats.
- Open weave allows re-seeding, when necessary.
- Open weave allows planting through the mat without cutting the mat.
- Easy to install and to walk on the mat.
- Wildlife will not feed on the mats.
- Higher resistance to UV light compared to synthetic mats.
- Coir twines move independently, creating no threat to wildlife movement.
- Support establishing vegetation better than synthetic mats.
- Woven from machine twisted bristle coir fiber twine; strong and durable.
- Hold moisture for seed germination and seedling growth.
- Higher tensile strength and provide initial support in bioengineering applications.
- Last 4 – 6 years and provide aesthetically pleasing applications.
- Made from freshwater cured bristle coir and dark brown in color.
