Nonwoven Geotextiles

Woven Geotextiles



Geosynthetics Clay Liner (GCL)




Geosynthetics Clay Liner (GCL) – Geofantex

  • Compactness: The sodium-based bentonite forms a high-density diaphragm underwater pressure. When the thickness is about 3mm, its water permeability is less than 5×10ˉ11m/s, which is equivalent to 100 times the compactness of 30cm thick clay, which is very strong. The self-retaining water performance.
  • Permanent waterproof performance: Because sodium bentonite is a natural inorganic material, even after a long time or the surrounding environment changes, it will not be aging or corroded, so the waterproof performance is long-lasting.
  • Simple construction: Compared with other waterproof materials, the construction is relatively simple, without heating and pasting. Just use bentonite powder, nails, washers, etc. for connection and fixation. No special inspection is required after construction, and it is easy to repair if waterproof defects are found. Geosynthetic Clay Liner (GCL) is the shortest construction period among the existing waterproof materials.
  • Integration of waterproof materials and objects: sodium-based bentonite has 20 to 28 times the expansion capacity when exposed to water. Even if the concrete structure vibrates and settles, the bentonite in the Geosynthetics Clay Liner (GCL) can repair cracks on the concrete surface within 2mm.
  • Green and environmental protection: Bentonite is a natural inorganic material, which has no special impact on the environment and has good environmental performance.
  • Unaffected by temperature: it will not be brittle under cold weather conditions.
  • Brand GeoFanTex® GCL
  • Product origin China
  • Delivery time 7-14 days
  • Supply capacity 40′ HQ/ 7 Days

Product Details

Geosynthetics Clay Liner (GCL) – Geofantex

The Geosynthetics Clay Liner is a kind of geosynthetic material specially used for anti-seepage of artificial lakes, waterscapes, landfills, underground garages, roof gardens, pools, oil depots and chemical storage yards. It is made of highly expansive sodium-based bentonite is filled between the special composite woven geotextile and non-woven geotextile. The bentonite impermeable pad made by needle punching can form many small fiber spaces. The bentonite particles cannot flow in one direction, and they stay in the pad when it meets water. A uniform and high-density colloidal waterproof layer is formed to effectively prevent water leakage.

Could be manufactured according to your inquiry, MINIMUM ORDER QUANTITY: 20’ft Container

Standards  UnitTechnical Specification
Geotextile Properties  
Top/Cap Nonwoven geotextile [ASTM D 5261]g/m2220
Woven geotextile [ASTM D 5261]g/m2110
Bentonite Properties  
Weight [ASTM D 5993]g/m24670
Swell index [ASTM D 5890]Ml/2g≥24
Moisture Content [ASTM D 4643]%12
Fluid Loss [ASTM D 5891]ml18
Finished GCL Properties  
Mass per unit areag/m2≥5000
Blue absorption capacityg/100g≥30

The Applications of Geosynthetics Clay Liner (GCL) – Geofantex

  1. Used to stabilize road and railway subgrades.
  2. The waterproof of municipal engineering, underground engineering of subways, buildings and roof reservoirs.
  3. Environmental protection and sanitation, domestic waste landfill, sewage treatment plant, industrial waste.
  4. Water conservancy, seepage prevention, plugging and reinforcement of rivers, lakes, reservoirs and dams.
  5. Waterproof of ponds in gardens, artificial lakes, golf courses, etc.
  6. Waterproof, anti-corrosion, anti-leakage, reinforcement, etc. in petrochemical, mining, agricultural and other fields.

Geosynthetics Clay Liner (GCL) Role in engineering – Geofantex

  1. It has excellent waterproof and anti-seepage performance, the anti-seepage hydrostatic pressure can reach 1.0MPa or more, and the permeability coefficient is 5×10-9cm/s. Bentonite is a natural inorganic material, which will not cause an aging reaction and has good durability; Any adverse effects on the environment are environmentally friendly materials
  2. It has all the characteristics of geotextile materials, such as separation, reinforcement, protection, filtration, etc. It is easy to construct and is not restricted by the construction environment temperature. It can also be constructed below 0°C. Only need to spread the Geosynthetics Clay Liner (GCL) on the ground during construction, fix it with nails and washers during vertical or inclined construction, and lap it as required.
  3. Easy to repair; even after the completion of the waterproof (seepage) construction, if the waterproof layer is accidentally damaged, as long as the damaged part is simply repaired, the perfect waterproof performance can be regained.
  4. The performance-to-price ratio is relatively high, and the application is very wide.
  5. The product has a width of up to 6 meters, which matches the international geotextile (membrane) specifications, which greatly improves the construction efficiency.

Geofantex Geosynthetics have to make a series of guarantee for our products both plant processing and selling out to our customers. The selling to you is the first step, the service and guarantee is our task. Geofantex Geosynthetics have an ISO Certificate to guarantee the raw material, the product processing, and the end product. From receiving your order to replacement and installation of the products, we have solved the problems in time if you need, whatever the quality and technics guideline or suggestions. Our company has been committed to supplying high-quality products with reasonable price and delivery in time. 

GEOFANTEX has an on-site Manufacturing Quality Assurance Laboratory at the factory. GEOFANTEX maintains a high level of quality and up-to-the-minute results on finished products through a fully equipped, well-staffed, dedicated laboratory existing in each of the manufacturing facilities. Each facility follows the same guidelines for evaluating the quality of GEOFANTEX products and is capable of adapting to market-driven requirements.
A. Objective
The objective of the GEOFANTEX Quality Assurance program is to define the implementation of basic manufacturing quality assurance (MQA) procedures necessary to ensure the consistent production of quality products supplied to the geosynthetic market. Note that at this time, these procedures are limited to Geosynthetics Clay Liner (GCL).
B. Scope
In order to achieve GEOFANTEX’s stated purpose, a rigorous set of minimum standards and an effective test program to assure compliance have been established. These procedures and requirements are frequently reviewed and adjusted to assure compliance with current market demands and/or predetermined project specifications. These procedures assure that raw materials and process parameters are controlled to provide products complying with GEOFANTEX’s pre-defined minimum characteristics.


A. Roll Numbering

Each roll of Geosynthetics Clay Liner (GCL) is assigned a unique roll number. The Quality Assurance Laboratory maintains records documenting the raw materials and resulting product quality information.

B. Approval Procedure

Results for each tested roll of the product are checked against both GEOFANTEX China standard and customer specifications for compliance. The Quality Assurance Laboratory approves those materials that meet these requirements for shipment.

C. Non-Conformance

Material that does not meet GEOFANTEX minimum standards is given a roll number but is rejected and not placed into inventory. The material is identified as scrap and will not be utilized. Material that meets GEOFANTEX minimum standards but does not meet a stricter customer specification is not allocated to that customer but is placed into inventory as GEOFANTEX standard material.

D. Documentation

Individual Quality Assurance Certificates are generated and supplied for each roll of Geosynthetics Clay Liner (GCL) product to include all relevant quality assurance information about the material(s).

Geofantex Geosynthetics have a series of package and delivery service working procedures. Geofantex Geosynthetics have supplied thousands of containers to Latin America, North America, Southeast Asia, and developed countries, and Africa within the past ten years. We provide the package of products with the rolls, pots, bags, sheets, or your requirement in orders. Our company has been committed to supplying high-quality products with reasonable price and delivery in time. Delivery one 40’HQ within 7 – 10 days. And we have an obligation in increasing loading quantity and make you save the freight costs maximumly. We supply the products by plane, by sea and land carriage to any regions or any countries of the worldwide, even the door-to-door service. 

Geosynthetic material type and function comparison table

What is Geosynthetics Clay Liner (GCL) – Geofantex

Geosynthetics Clay Liner (GCL) is an impermeable liner between GCL and polymer material-geomembrane. Mainly used in environmental engineering waste landfills, underground reservoirs, underground infrastructure construction and other projects to solve the problems of sealing, isolation, and leakage prevention, with good effect and strong resistance to destruction.

Bentonite Geosynthetics Clay Liner (GCL) can be divided into needle-punched sodium-based Bentonite Geosynthetics Clay Liner, needle-punched film-coated Bentonite Geosynthetics Clay Liner, and adhesive-processed Bentonite Geosynthetics Clay Liner.  The needle-punched membrane-coated Bentonite Geosynthetics Clay Liner is a layer of high-density polyethylene geomembrane compounded on the outer surface of the non-woven geotextile of the needle-punched Bentonite Geosynthetics Clay Liner.  Adhesive method sodium-based Bentonite Geosynthetics Clay Liner is a kind of sodium-based bentonite produced by bonding bentonite particles to a high-density polyethylene board with an adhesive

Development history of the Geofantex

2014 — Geofantex Geosynthetics Co., Ltd. Factory was established
2015 — promoting the new image and building GeoFanTex brand
2018 — Geofantex products exceeded 100 million dollar
2019 — Upgrade new nonwoven geotextile, Geomembrane, and Composite geomembrane production line.
2020 — The new factory was completed.
2021 — Upgraded production line of the factory, making all the products could meet ASTM, AS, and ISO standards.
2022— Improve the quality of after-sales service and launch customized products.

Company Profile

Geofantex Geosynthetics Co., Ltd. is located in the beautiful coastal city of Dalian, with superior geographical location, convenient transportation, and developed communications. The company was founded in 2014 with a registered capital of 5,000,000 yuan. It has an industrial park covering an area of ​​more than 50 acres in Jinan, Shandong. It has a modern office environment, advanced production equipment, and a group of high-quality and professional technical and management personnel.

The company is mainly based on producing and selling green and environmentally friendly geotextiles. The main products are: staple fiber geotextiles, filament geotextiles, composite geomembrane, HDPE/EVA geomembrane, geogrid, Geosynthetics Clay Liner(GCL), waterproof board, composite drainage geonet, and other geosynthetic products. The above products have been widely used in the construction of soft foundation reinforcement, reinforcement, slope protection, waterproofing, drainage, greening, and other infrastructure projects in the construction fields of railways, highways, water conservancy, electric power, ports, mines, and garbage disposal sites. The company’s products are exported to foreign countries, and it insists on providing technical consultation, design cooperation, construction guidance, and other services for major civil engineering enterprises at home and abroad. It can produce geosynthetics of various scales according to customer requirements. And the vast number of users alike has also been recognized and praised by domestic and foreign experts.


The company has passed ISO9001 quality system certification and ISO14001 environmental system certification, and strictly adopts national standards to guide production to ensure the production of qualified products. Since the establishment of the company, it has continuously introduced advanced enterprise technology and equipment, and its products have been exported to Australia, Canada, South America, Southeast Asia, and other regions. It has very complete production, sales, and logistics channels. As of xxx year, the total export sales reached xxx million. After feedback from major companies at home and abroad, the company’s products are stable and reliable, with convenient construction and reasonable price, bringing economic and social benefits to our customers, and have won unanimous praise from domestic and foreign customers.

The company gives full play to its own innovation advantages, platform advantages, and market advantages, and with the support of national policies, builds a national first-class enterprise, always follows the principle of “quality first, reputation first”, adhering to the principle of “people-oriented, quality for survival, integrity, unity and hard work”, Integrated enterprise spirit, sincere cooperation with various engineering units and colleagues from all walks of life, harmonious development, and work together to make greater contributions to infrastructure.

Frequently Asked Questions

Yes, the quality of Geofantex Geosynthetics products could meet all the standards according to your requirement.

OEM could be accepted by Geofantex Geosynthetics, and we have a lot of practical experience. 

Sure, Geofantex Geosynthetics products could be customized, Model, Size, Package, Raw material, Composite products, all could be customized, and we welcome special customized.

Yes, we could issue third-party test reports, like SGS, TRI, etc.

Yes, below 2m2 samples are free.


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