Bentofix is a water shielding liner using a natural clay called bentonite. Bentofix is produced by sandwiching layers of sodium bentonite powders between tough and flexible polypropylene nonwoven and woven geotextiles and needle-punching with over two million fibers/m² into the form of sheet to prevent the clay from being washed away and distributed unevenly. Bentofix is a flexible three or four-layer water shielding liner and has been used for many projects globally.

Advantages of using Bentofix

● Semi-permanent water shielding material impervious to degradation

● Self-repairing of holes and cracks occurring in the sealed water layer

● Easy to use just by overlaying

● Able to be nailed in place

● Good adjustment to under-layer

Cross-section structure of standard three-layer type Bentofix

Cross-section structure of X2 four-layer type Bentofix (polyethylene coating)

Standards

Bentofix is a highly regarded global product that is manufactured by Naue (Germany) in a plant which acquired ISO9001 certification in 1994.

Item	Bentofix	Bentofix X2
Thickness	6.0 mm	6.0 mm
Width	2.5 m	2.4 m
Length	25 m	25 m
Polyethylene coating	-	200 g/m2
Permeability	5 x 10-11m/s	5 x 10-12m/s
Swell index	24 ml/2g	24 ml/2g

Bentofix
Thickness	6.0 mm
Width	2.5 m
Length	25 m
Polyethylene coating	-
Permeability	5 x 10-11m/s
Swell index	24 ml/2g

Bentofix X2
Thickness	6.0 mm
Width	2.4 m
Length	25 m
Polyethylene coating	200 g/m2
Permeability	5 x 10-12m/s
Swell index	24 ml/2g

Secondary materials

Material name	Packing	Application
Bentonite powder	25 kg/bag	Adhesive for overlap

Bentonite powder
Packing	25 kg/bag
Application	Adhesive for overlap

Laying process

Bentofix is heavy product. It is recommended to hang and lay it by using cranes or any heavy equipment. To lay Bentofix, reserve no less than 20 cm (to cover the standard margin of 20 cm for adhesion) on the edge of the sheets for overlapping, apply bentonite powder on the margins of both sheets, and then overlap and press them until being adhered. No special technique is required to lay Bentofix.

Adhesion process

Apply bentonite powder on the margins of both sheets (approx. 1 kg per 1 m2), and then overlap and press them until being adhered without making any wrinkles or gaps.

Agricultural ponds

Riverbanks

Contaminated soil treatment