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AL TOPRANI COIR GEO-TEXTILES

Coir geotextiles are emerging as an excellent media for soil bio engineering applications in the form of Meshes, Nettings, Needled felts, Geo Rolls, Blankets, Vegetation fascines, Geo beds and so on. They are being extensively employed to combat a variety of environmental challenges. 

  1. Woven Coir Geotextiles:
  2. Non-woven felts: Erosion Control Blankets
  3. Al Toprani coir beds
  4. Geo Rolls & Vegetation fascines
  5. Jute Geotextiles

 Product information and specifications
Woven Coir Geotextiles:

Mesh Matting, hand knotted coir nettings.

Woven coir geo meshes and nettings hold seed and soil intact on slopes, drainage ways and other areas of concentrated water flow, preventing erosion during heavy rainstorms. Coir geo meshes and netting are heavy woven mulch that stay together and cannot be moved by flowing water, wind or growing grass. The openings between the strands give the grass or vegetation plenty of room to grow on.

  • Al Toprani Woven coir geotextiles are available in densities from 400 to 1400 g/sq.m. These different mesh mattings can meet the diversified requirements of erosion control.
  • Matting density can be selected based on soil type, slope of surface, rainfall intensity, surfacial flow velocity etc.
  • Provide sufficient open area for the growth of vegetation in any
    climatic conditions.
  • Easy to install and follows the contour of the soil surface.
  • Eco-friendly and non-polluting.
  • A higher density means a closer arrangement of yarns in warp and weft direction and less open area in the netting.
     

Product No.

Warp ends

per dm

Weft Picks

per dm

Density

Kg/sq.m

Specifications/

Remarks

MMA1(H2M1)

9

8

0.650

ROLLS

MMA2(H2M4)

19

11

1.400

Length 50 m

Top

MMA3(H2M8)

11

7

0.700

Width 1 to 4 m

MMA4(H2M9)

13

7

0.900

Depending on the type of yarn used tensile
strength varies from 10 kN/m to 30 kN/m.

MMV1(H2M5)

9

8

0.740

MMV2(H2M6)

4.6

4

0.400

Types of Mesh Mattings 

Quality
specification

Type of
Warp Yarn

Approximate
Scorage of
Warp yarn

Ends
Per dm

Type of
weft
yarn

Picks
per
2mm

Mass kg/m2

MMA1 (H2M1)

Anjengo

14

9

Vycome

8

0.650

MMA2 (H2M4)

Anjengo

12

19

Aratory

11

1.400

MMA3 (H2M8)

Anjengo

12

11

Aratory

7

0.700

MMA4 (H2M9)

Anjengo

11

13

Aratory

7

0.900

MMR1 (H2M3)

Anjengo

15

14

Aratory

14

0.875

MMV1 (H2M5)

Vycome

13

9

Vycome

8

0.740

MMV2 (H2M6)

Vycome

12

9

Vycome

4

0.400

MMB1 (H2M2)

Beach

9

8

Beach

7

0.700

MMY1 (H2M7)

Beypore

-

4

Beypore

6

1.250

Material composition: Coir geotextiles are made of 100% coir or in association with other natural fibers.


Specifications of Al Toprani coir mesh mattings

(As per relevant International Standards)

Characteristics

MMA4

(H2M9)

MMA3

(H2M8)

MMV2

(H2M6)

 

Materials: 100% natural coir fiber

 

Construction : Plain weave

Weight at 20% M.R (in gsm)

900

700

400

Ends/dm

13

11

4.6

Picks/dm

7

7

4

Aperture size (in mm)

5 x 10

7 x 10

20 x 20

Minimum breaking load (kN/m) in

 

dry condition:

• Machine Direction

27.25

20.34

10.30

• Cross Direction

10.62

9.52

9.70

Ultimate Strain - %

 

• Machine Direction

31

22

22

• Cross Direction

30

33

33

Maximum breaking load (kN/m) in

 

wet condition:

• Machine Direction

21

20

7.5

• Cross Direction

8.5

8.5

7.4

Ultimate Strain - %

 

• Machine Direction

55

52

35

• Cross Direction

45

42

35

 

Non-woven felts: Erosion Control Blankets

This is made of 100% coir fiber or in association with other natural fibers. The fiber mass is held together by coir threads. 

Material composition: The Coir non-woven blankets are made of 100% coir fiber, randomly needle punched to get the desired degree of compaction. The felts have excellent moisture absorption and retention characteristics and are ideal medium for plant growth.

Two Al Toprani woven coir geotextiles combine to form a bed/cushion. It can be produced in different thickness, width and length according to customer requirements. Relatively steep stream banks can be covered with pre-planted coir beds. Sediments will be collected and held in coir beds, which will help plant growth. 

The mesh matting differs because of different aperture size and also because of the difference in quality of the yarn used: 

Types of yarns used 

Sl

No

variety

Type of fiber

color

(Natural)

Twisting&

Spinning

Approx.

Serge

General

Characteristics

1

 

Anjengo

Long and Medium

Stapled well cleaned

fiber from well retted

husks

Bright golden

reddish brown

to bluish grey

Wheel-Spun

hard twisted

and hard

spun

12/20

Less hairy and

Smooth texture

2

Aratory

Long and medium

Stapled less combed

fiber from retted

husks

Reddish brown

to bluish grey

Wheel-spun,

soft twisted

and hard

spun

11/18

Hairy, less regular

in spinning and

slightly pithy.

3

Vycome

Medium and short

stapled less combed

from retted husks.

Bright cream,

reddish brown

Hand or

wheel-spun,

and soft

spun

11/17

Hairy, less regular

in spinning and

4

Beach

Medium and short

stapled uncombed

fiber from under

retted husks

Reddish brown

Hand spun,

very soft

twisted and

soft spun

9/14

Less hairy, smooth

texture, regular in

spinning and very

pithy.

5

Beypore

Medium and short

stapled less combed

fiber from under

retted husks

Bluish brown

Hand spun,

soft twisted

and soft

spun

6/9

Very thick, less

hairy containing

a little pith

 

Al Toprani Coir Beds

Al Toprani coir beds are made out of 100% natural coir fiber and Al Toparni woven coir geotextiles. Coir fiber is two Al Toprani woven coir geotextiles to form a bed/cushion. It can be produced in different thickness, width and length according to customer requirements. Relatively steep stream banks can be covered with pre-planted coir beds. Sediments will be collected and held in coir beds, which will help plant growth.

Al Toprani coir beds will have a minimum wide width tensile strength of 8 KN/m and absorbs more than 200% of water. Al Toprani coir beds will have a minimum permeability of about 9 cm/sec.

 Al Toprani Coir Gallery

 







 
 
 





 What are Al Toprani Coir Geotextiles?

These are essentially permeable fabrics used to prevent soil from erosion. They protect the land surface and promote vegetation cover during the formative period after which they degrade into the soil. Their functions basically are erosion control separation and filtration/drainage. 

Coir is a 100% organic fiber from a renewable source – the coconut husk. Naturally resistant to rot, moulds and moisture, it needs no chemical treatment. Hard and strong, it can be spun and woven into mattings. They also have the right strength and durability to protect the slopes from erosion, while allowing vegetation to flourish. They can dissipate the energy of flowing water and absorb the excess solar radiation.

                              

Coir is a natural fibre and in the manufacturing of coir Geotextiles no harmful chemicals are used it is 100% environment-friendly. Experimental evidence shows that even after six months of usage more than fifty percent of the strength of the yarn is retained. The drip ability of coir Geotextiles allows them to conform in intimate contact with the soil.  Coir Geotextiles have an ability to absorb water which helps the growth of vegetation.  

Since coir Geotextile is a neutral material it is biodegradable and improves the fertility of soil. Complete degradation of the coir geotextiles takes place in 3 to 5 years. It is not harmful to human beings, plants and animals. It is 100% environmentally friendly.

Jute Geotextiles

These are woven geo mesh mattings with jute instead of coir. Jute decomposes much faster than coir and so these jute textiles are used where the desired durability of the geotextiles is low, like lawns in golf course, gardens etc.

Applications

Coir geotextiles are currently used in erosion control measures such as growing of vegetation on highway shoulders and embankments and also in protecting the banks of lakes, canals and rivers.   

Coir geotextiles give maximum protection to the soil until the grass takes root and provides a permanent coverage. After the stabilization of soil, the nettings decompose gradually and provide nourishment to grass growing on the soil medium. The netting gives plenty of room to grow and at the same time provide a large number of “check daks”. 

The accuracy of Coir geotextiles, with a density of 500g/m2, in reducing the water velocity and soil loss is reported to be 77% and 98.4% respectively relative to bare soil conditions (cammack-1988). Schurholz 1988 reports that coir retained about 20% of its strength after one year in incubator test with soil at 28-30 c and 90% humidity whereas jute biodegraded fully after eight weeks. 

Coir geotextiles can be used either as an overlay or an interlay – the former protecting the surface from run-off and the latter performing the functions of separation, filtration and drainage. Soil bio – engineering with Coir geotextiles finds effective application in the following situations:

  • Water course protection including stream bank protection
  • Shoreline stabilization
  • Storm water channels
  • Slope stabilization in railway cutting and embankments
  • Water course protection
  • Separation application in rural roads, railways, parking and storage areas
  • Reinforcement of rural unpaved roads, temporary walls Providing sub base layer in road pavement
  •  Filtration in road drains and land reclamation
  • Containment of soil and concrete as temporary seeding etc.
  • Concrete column curing
  • Fly ash dump waste protection and greening Forestry revegetation
  • Highway cut and fill slopes
  • Control of shallow mass waste and gully erosion
  • As sound barrier
  • UV protection for under earth crops
  • Roof top greening
  • Protection from wind erosion
  • Storm shuttering
  • Agricultural and horticultural applications like mulching, antiweed, vegetative water channels
  • High traffic areas
  • Mine site reclamation
  • High altitude ski slopes
  • Dune rehabilitation Wetland environments
  • Landscaping
  • Plant and tree protective systems
  • Agri and Horti engineering industry
  • Mud wall reinforcement
  •  Soil stabilization. 

Reinforcement

Coir nettings with tensile strength and the friction between coir and soil is adequate to justify its application for use in slope stability problems and helps development of shear surface and thus enables greater heights of fill to be built than would otherwise be possible. 

Coir sub – base layer in Road pavements

The use of closely knitted Coir geotextiles as an interface between the sub grade and the sub base increases the strength of the pavement and prevents intermingling of the soil and the granular sub base and improves drainage. Coir net also acts as a support membrane and reduces localized distress to the road surface by redistributing traffic loads over a wider area of the road surface. Figures show the suggested pavement with coir fabric. 

Gardening

Unique advantage of coir geotextiles when compared to other natural fibers is that frequency of watering can be reduced due to its high water retention capacity (can hold 3 times its own weight).

Coir cut fibre: the small fibre bit which is waste during the sieving of coir dust is used as growing media in the horticulture and floral gardens.

Coir basket and poles: the combination of soak and grow and the liner gives maximum moisture retention for your basket plants.

Coir liners: all wall mounted baskets come with rubberised coir liner and universal wall mount. The wall mount is also ideal for attaching the basket to fencing without the need for drilling holes.

Husk chips: dried husk are cut into various small, medium, large size mixed with charcoal and firewood and used as hot mixture for orchid and anthurieum plantations.

Unique advantages of Al Toprani Coir Geotextiles

• Faster binding of soil

• Excellent air and water permeability

• Enough sunlight passes through

• Holds the seeds and saplings in place

• High water retaining capacity

• Excellent medium for quick vegetation

• Degrades over a period of time (2.5 to 6 years)

• Allows for deep rooting of plants and provides nutrients.

• Easy to install and follows the contour of the soil surface.

• Eco-friendly and nonpolluting.

 The unique properties of coconut fiber and Coir geotextiles to absorb water and degrade with time give it a definite edge over synthetic geotextiles in various applications. The use of geotextiles during the past three decades has increased from 10.2 million Square. Meter is 1970 to 1400 million square meter in 2000. But the Geotextiles made out of natural fiber account for only 0.001%. The rest is enjoyed by plastic materials!! The major drawback in coir Geotextile industry is non availability of proper specifications/procedure as well as that of well documented scientific field studies. 

Application Techniques of Al Toprani Geotextiles

Site assessment

The first step in the application of Coir Geotextiles is to make a detailed study of the sites; Slope assessment, nature and consistency of the soil cover, the extent of damage, rainfall patterns etc. to make the right and relevant choice of Coir geotextiles for the site, as well as the seeds or saplings. Site preparation and laying procedure 

The ground has to be prepared by removing protruding stones, earth masses etc. The surface must be made relatively free of weeds, stones, roots, sticks, rivulets, gullies, crusting and caking. 

After preparing the soil surface, the seeds have to be applied on the surface by hand broadcasting or by hydraulic means and the blanket/mat must be laid over the seeds almost immediately. 

The seeds/plants have to be obtained depending on the climatic conditions, preferably the local species as per client’s instructions. The seeds after germination should take up deep rooting system. The seeds should match the soil conditions to get optimum germination, root development, vegetation density and longevity. 

The erosion control blankets are to be laid in the direction of the water flow starting from the top to the bottom. The top portion has to be anchored in a cut trench and stapled or spiked to fix properly. Similar procedure has to be followed at the bottom of the slope also for best results. The blankets may be anchored with 11 gauge wire staples, of size 8” x 2” x 8” (U shaped) One or two doses of sprinkling is recommended if the weather is hot and dry. For the first few days, the moisture levels must be properly monitored to facilitate easy germination of the seeds. 

The blanket will protect the slopes against rain water. The vegetation will get established to protect the slopes permanently and achieve greening effect on the surface. 

Seeding/Planting Methods: Quick germination, sod forming, grass species must be used whenever possible. While seeding/planting always match the seed/sapling to be used with the local soil conditions for optimum results. Standard seed broadcast methods are acceptable prior to erosion control blanket installation.


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