LDPE Geomembrane

Product Category

1.0mm 1.5mm 2.0mm pond Geomembrane

Product Introduction

LDPE (Geomembrane) is a geomembrane made of low-density polyethylene (LDPE) and is widely used in civil engineering and environmental protection. Due to its unique physical properties, LDPE geomembrane has become an important material for anti-seepage, waterproofing, isolation and protection.

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LDPE geomembrane material features:

Flexibility: LDPE geomembrane is softer than other high-density polyethylene (HDPE) geomembranes, so it is easy to handle during construction and can better adapt to irregular ground.
Corrosion resistance: LDPE geomembrane has strong chemical corrosion resistance and can resist erosion by a variety of chemicals such as acids, alkalis and salts.
Aging resistance: It has good UV resistance, but not as good as HDPE geomembrane, so it may be reduced under sunlight exposure. It is usually recommended to cover the geomembrane with a layer of soil or other covering materials to extend its service life.
Tensile strength and ductility: LDPE geomembrane has good tensile properties and can withstand certain mechanical stress.

LDPE geomembrane application areas:

Landfill: used for the bottom and side walls of landfills to prevent leakage and contamination of groundwater.
Water conservancy projects: such as anti-seepage projects such as pools, ponds, and channels to prevent water leakage.
Agriculture: used in greenhouses or irrigation systems to prevent soil moisture from evaporating or leaking.
Mining projects: used for anti-seepage isolation of mine deposits to prevent harmful substances from entering the environment.
Sewage treatment plants: used for anti-seepage isolation of sewage pools to prevent wastewater from seeping into the ground.

Specifications and performance indicators:

Thickness range: Common thicknesses range from 0.2mm to 2mm, and the specific choice depends on the needs of the application scenario.
Tensile strength: The tensile strength of LDPE geomembrane is generally between 10-20MPa, depending on the product specifications.
Permeability: LDPE geomembrane has excellent anti-seepage performance, and the water permeability coefficient is usually at the level of 10^-11cm/s.

umber	Item	Index
umber	Thickness mm	0.30	0.50	0.75	1.00	1.25	1.50	2.00	2.50	3.00
1	Density g/cm3	≤0.939
2	Tensile breaking strength (vertical and horizontal) N/mm	≥6	≥9	≥14	≥19	≥23	≥28	≥37	≥47	≥56
3	Elongation at break (vertical and horizontal) %	≥560
4	Right angle tear load (vertical and horizontal) N	≥27	≥45	≥63	≥90	≥108	≥135	≥180	≥225	≥270
5	Anti-puncture strength N	≥52	≥84	≥135	≥175	≥220	≥260	≥350	≥435	≥525
6	Carbon black content %	2.0~3.0
7	Carbon black dispersibility	10 data in the 3 not more than one, 4, 5 is not allowed

In stock:

No.	Properties	Test Method	Test Value
1	Thickness(mm)	ASTM D5199	0.50	0.75	1.00	1.25	1.50	2.00	2.50	3.00
2	Density (g/cm2)	ASTM D1505	0.939
3	Tensile Propeties
	Yield Strength(N/mm)	ASTM D6693	7	11	15	18	22	29	37	44
	Break Strength(N/mm)	ASTM D6693	13	20	27	33	40	53	67	80
	Yield Elongation %	Type IV	12
	Break Elongation %	Type IV	700
4	Tear Resistance/N	ASTM D1004	62	93	125	156	187	249	311	374
5	Puncture Resistance/N	ASTM D4833	160	240	320	400	480	640	800	960
6	Stress Crack resistance/hr	ASTM D5397 (App.)	300
7	Carbon Black
	Carbon Black Content %	ASTM D1603	2.0-3.0
	Carbon Black Dispersion	ASTM D5596	Carbon black dispersion(only near spherical agglomerates)for 10 different views 9 in categories 1 or 2 and 1 in category 3
8	Oxidative Induction Time(OIT)
	Standard OIT/min	ASTM D3895	100
	High Pressure OIT/min	ASTM D5885	400
9	Oven Aging at 85°C
	Standard OIT-% retained after 90 days	ASTM D3895	55
	High pressure OIT-% retained after 90 days	ASTM D5885	80
10	UV Resistance
	Standard OIT retained after 1600 hrs	ASTM D3895	50
	High pressure OIT retained after 1600 hrs	ASTM D5885	50
11	Low tempreture impact brittle property at -70°C	_	Pass
12	Permeability g·cm/(cm2)·Pa	_	≤1.0×10-13
13	Dimensional Stability/%	_	±2

Features:

Flexibility: LDPE geomembrane is softer than other high-density polyethylene (HDPE) geomembranes, so it is easy to handle during construction and can better adapt to irregular ground.
Corrosion resistance: LDPE geomembrane has strong chemical corrosion resistance and can resist erosion by a variety of chemicals such as acids, alkalis and salts.
Aging resistance: It has good UV resistance, but not as good as HDPE geomembrane, so it may be reduced under sunlight exposure. It is usually recommended to cover the geomembrane with a layer of soil or other covering materials to extend its service life.
Tensile strength and ductility: LDPE geomembrane has good tensile properties and can withstand certain mechanical stress.

Application Fields:

Landfill: used for the bottom and side walls of landfills to prevent leakage and contamination of groundwater.
Water conservancy projects: such as anti-seepage projects such as pools, ponds, and channels to prevent water leakage.
Agriculture: used in greenhouses or irrigation systems to prevent soil moisture from evaporating or leaking.
Mining projects: used for anti-seepage isolation of mine deposits to prevent harmful substances from entering the environment.
Sewage treatment plants: used for anti-seepage isolation of sewage pools to prevent wastewater from seeping into the ground.

Certificates:

Product quality certification: Passed ISO9001 quality management system certification, CE certification, etc.
Product test report: Provide product test reports issued by authoritative organizations.

FAQ:

1. What is pond geomembrane?

Pond geomembrane is a waterproof liner made from materials like HDPE or LLDPE, used to prevent water leakage in ponds, reservoirs, and aquaculture systems.

2. What is the best geomembrane for ponds?

LLDPE geomembrane: better flexibility, ideal for uneven ground
HDPE geomembrane: higher strength, suitable for large or deep ponds
Choice depends on project conditions and budget

3. What thickness is recommended for pond lining?

Typical thickness selection:

0.3–0.5 mm → small garden ponds
0.5–1.0 mm → fish/shrimp ponds
1.0–2.0 mm → large reservoirs or industrial ponds

4. How long does pond geomembrane last?

Generally 5–20 years, depending on:

Material quality
UV exposure
Installation quality
Environmental conditions

5. Is pond geomembrane safe for fish and shrimp?

Yes. High-quality geomembranes are:

Non-toxic
Environmentally friendly
Safe for aquaculture

6. How do you install pond geomembrane?

Basic steps:

Prepare and smooth the subgrade
Lay a protective layer (optional geotextile)
Install the geomembrane
Weld seams using hot wedge or extrusion welding
Anchor edges securely

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