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How to Test a Geomembrane Liner?

How to Test a Geomembrane Liner? As we know if buying a pond liner, we wanna it to be a long time usage. If you don’t know how to distinguish the geomembrane quality, this article will help you.

100% Virgin Material VS Recycled Materials
Geomembrane Materials

PE geomembrane needs to be produced with 100% virgin materials, they could perform a long life without breaking or cracking. There are many different types of quality in the market for the time, but, it will be difficult for clients to tell the material type. Firstly, from the smell, if the pond liner is made of recycled materials, there will be an unpleasant smell. Secondly, recycled geomembrane surface will be rough and not smooth at all, you can see tiny bubbles and particles on it. The brand new HDPE LLDPE liners are smooth and glossy. Thirdly, from the tech data such as breaking strength and cracking strength, it is easy to do a test before your buy. You can even tear it up by hand if made with recycled granules. Very bad quality even out of your imagination. 100% virgin materials pond liner can be strong enough to the liver over 60-70 years underground even for corrosion pollution treatment. Another small test is about HDPE density, since it’s 0.94g/cm3, it can float above the water, some recycled materials with poor quality will sink to the bottom. That is the type you can never buy definitely.

geomembrane test
Geomembrane Test

Also, geomembrane liners are divided into two main series, HDPE and LLDPE. HDPE is high-density polyethylene, which is harder and has higher technical data, suitable for engineering applications like Landfills, Wastewater treatment, Mining projects and Power plants,s, etc. The regular thickness will be 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm. One more, there are some project designs that will have a textured surface of geomembrane, one side or both sides. LLDPE is linear low-density polyethylene, which is soft and glossy, LLDPE is popular in aquaculture and agriculture industries like rainwater ponds, fish ponds, shrimp ponds, and farm reservoirs, etc. Popular LLDPE pond liner are 0.3 mm, 0.5 mm, 0.75 mm, 1.0 mm.

4Layers co-extrusion geomembrane production line
4Layers co-extrusion geomembrane production line

So we need to be cautious about the super low cost of geomembrane liners, the recycled liners will be damaged and lose the anti-seepage function, what’s more, the recycled material itself also contains lots of harmful substances, which will do harm to our environment and finally to human. As the old saw goes, you will get what you pay for, it’s never too much to buy good quality. Pond lining is one of the most common applications for geomembrane use. For example, if you have a plan for a fish pond, DIY swimming pool, and garden water pond, etc, LLDPE geomembrane is always your best choice. It’s low cost, anti-seepage, and easy and fast installation.

Generally, that’s some basic information about hdpe or LLDPE liners. We hope you can find the fit one for usage. Earth Shield Geosynthetics has been serving over 70 countries with more than 20 years of experience. If you have any questions about the pond liners, please contact us. Our sales and technical team will help you get the best solutions!


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