Ideal for flood protection works to control soil erosion. Typar drains and filter water from the soil. Reduce road rutting and stabilize aggregate base on weak natural subgrade soil

1. DuPont™ Typar® SF
The ultimate choice
March 16th, 2021

2. 2
A unique product

3. Typar® – a unique product
DuPont™ Typar® is manufactured using a unique integrated process
in which continuous filaments of polypropylene are spun and
immediately formed into a web that is thermally and mechanically
bonded at filament crossover points
The bonding method gives a unique combination of
properties:
High initial modulus (stiffness/rigidity)
Excellent uniformity
High strength
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INTERNAL USE ONLY

4. The ideal combination of properties
Mechanical
properties
Hydraulic
properties
Typar®
Energy
absorption
High initial
modulus
Excellent
filter
properties
Constant
permeability
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INTERNAL USE ONLY

5. Mechanical properties – a superb all-round performance
Combination of initial modulus and elongation
High resistance to damage during installation
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INTERNAL USE ONLY
Low elongation  low rutting
Stabilization allows rutting to be reduced
vs. needle-punched materials
High initialmodulus

6. Hydrophilic properties for effective filtration
Effective filtration
by creating a natural soil filter
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INTERNAL USE ONLY
Potential clogging of thick filters:
no clogging thanks to the thin pre-compressed structure
NATURALSOIL
FILTRATION LAYER
BRIDGING NETWORK
TYPAR® SF
WATER FLOW
SOIL
THICK GEOTEXTILE
DRAINAGE LAYER
PARTICLES CLOGGING
PARTICLES PASSING

7. Higher permeability for better filtration
Typar® SF structure
similar to natural soil
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INTERNAL USE ONLY
Typar® SF retains its permeability under in-use
loads, contrary to needle-punched geotextile
Pre-compression of Typar® SF ensures that pore
size is not reduced or enlarged, resulting in long-
term filtration efficiency
No complete blocking or blinding due to large
number of pores and random pore-size
distribution

8. A broad range of functions
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9. A broad range of functions
Filtration
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INTERNAL USE ONLY
Protection
Drainage
Stabilisation
Separation Typar®

10. Efficient separation and stabilisation
Aggregate savings
Increased compaction
― Enhanced load-bearing
― Improved rutting resistance
Improved frost resistance
Increased bearing capacity of the soil
and reduced differential settlements
because of energy absorption
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INTERNAL USE ONLY

11. Outstanding in filtration
TOPSOIL
TYPAR® SF
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INTERNAL USE ONLY
FREE FLOW OF WATER DRAINAGE LAYER
Fines don’t migrate:
after initial build-up of
the natural filter, no
further migration of fines
Permeability
remains constant,
even under
soil pressure
Erosion
of topsoil
is prevented
Long-term filtration
is assured

12. Protection against puncturing
TYPAR® SF
(separation / filtration)
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INTERNAL USE ONLY
WASTE
SANDLAYER
TYPAR® SF
(protection)
DRAINAGE LAYER
GEOSYNTHETIC BARRIER
(geomembrane)
COMPACTED CLAY LAYER
NATURALSOIL
In landfills, Typar® SF ensures the protection of geomembranes and geosynthetic
systems during installation and over time

13. Efficient and durable drainage
NEEDLE-PUNCHED
GEOTEXTILE
TYPAR® SF
NON-COMPRESSIBLE DRAINAGE CORE
DRAINAGE CAVITY
NON-COMPRESSIBLE DRAINAGE CORE
DRAINAGE CAVITY
Evacuation
of water or
leachate
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INTERNAL USE ONLY
Efficient drainage requires
a non-compressible core
and a robust geotextile filter
Typar® stiffness
makes the difference

14. The ultimate choice
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15. Typar® SF: the ultimate choice
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INTERNAL USE ONLY
High energy absorption
Outstanding uniformity High initial modulus
Long-term filtration High elongation

16. Practical advantages
Consistent performance
Excellent product uniformity over the entire roll
Easy to handle
Can be carried by 2 people
Simple to cut
Ease of installation
Pre-compressed Typar® SF doesn’t absorb water
so it can be installed in muddy or even winter conditions
Simplified logistics
Pre-compressed Typar® SF requires less storage space
and fewer truck movements
Large choice of roll sizes
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INTERNAL USE ONLY

17. DuPont™, the DuPont Oval Logo, and all trademarks and service marks denoted with ™, ℠, or ® are owned by affiliates of DuPont de Nemours, Inc. unless otherwise noted. © 2019 DuPont.
Nothing contained herein shall be construed as a representation that any recommendations, use or resale of the product or process described herein is permitted and complies with the rules or
regulations of any countries, regions, localities, etc., or does not infringe upon patents or other intellectual property rights of third parties.
The information provided herein is based on data DuPont believes to be reliable, to the best of its knowledge and is provided at the request of and without charge to our customers. Accordingly,
DuPont does not guarantee or warrant such information and assumes no liability for its use. If this product literature is translated, the original English version will control and DuPont hereby
disclaims responsibility for any errors caused by translation. This document is subject to change without further notice.