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High Density Polyethylene HDPE Self Adhesive Membrane-Lap adhesive

Lap adhesive

Product overview

High-density polyethylene self adhesive waterproofing membrane is one kind of polymer waterproof rolling material which is specially developed for the underground and tunnel engineering. It adopts the pre-laying construction technology, and can form a strongly reverse bond with the post-pouring concrete structure. In this rolling material, the extruded sheet of modified polyethylene resin is made as the main waterproof material, while the water-soluble isolation material is adopted as the waterproof bonding layer, and then the protective layer of polyethylene membrane is covered to form the polymer waterproof rolling material. After the self-adhesive layer of rolling material is reacted and concreted with the cast-in-situ and liquid concrete pulp, the gapless bond between the waterproof layer and concrete structure is formed to prevent the hidden danger of water breakthrough between the layers, so that the system reliability of waterproof system can be effectively improved.

Product features

*The pre-laying & reversely bonding technology of product: The pre-laying & reversely bonding technology is adopted to form one integration with the structural concrete of rear foot, so that the problem of traditional wrapped waterproof can be resolved.

*The high-strength sheet of product can effectively resist any crack or puncture, and any protective layer is not required any more. Once the assembling reinforcement is completed, the concreting can be done.

*High bonding strength. The product can form a permanent bond with concrete. It has a higher bonding strength and excellent effect of water retention, so that the leakage probability can be effectively reduced.

*Prevent any destruction of sedimentation. As known, the traditional waterproof layer will be torn by any foundation settlement or subsidence of protective layer. However, the pre-laying & reversely bonding material can be bonded with the structure to prevent any destruction of sedimentation.

*Light material & easy operation. The waterproof of Grade A can be realized by using the product with the thickness of 1.2 mm. The product can be applied in any kind of complex or simple formation level. It can be realized to rapidly pave and paste by only two workers.

*Waterproof for all weather use. The construction can be done in the multiple environments of rainy season, summer and winter etc.

*Shorten the construction period. The requirement for formation level is not high, and the structure layer is less. The construction is quick and convenient. The construction period will be shortened to over 10 days than that of common rolling material.

*The rolling material of product has a higher peel strength, excellent tear resistance, strong capacity of hydrolysis resistance and excellent low temperature flexibility.

*The construction process does not need any solvent or fuel. It is green, safe and environmentally friendly.

*The water-soluble isolation material is adopted as the waterproof bonding layer. After it is contacted with the wet concrete, the isolation material will be dissolved and disappeared. The self-adhesive layer of rolling material is directly bonded with the concrete. The bonding strength is high and the effect of anti-water breakthrough is good.

Range of Application

It is applied for any waterproofing works of subway, tunnel, hole, reservoir, canal, landfill, sewage treatment plant, metallurgical chemical plant, as well as the underground floor and side wall etc of industrial and civil buildings which are constructed by adopting the pre-laying and reversely bonding technology.

Executive Standards

The basic performance indexes of physical mechanics for the rolling materials with Class P, Pre-Laid Waterproof Rolls
PropertiesTYPICAL VALUES- 1.2mmTHICK MEMBRANETYPICAL VALUES 1.2mmTHICK MEMBRANETYPICAL VALUES- 1.5mmTHICK MEMBRANETYPICAL VALUES- 1.7mmTHICK MEMBRANETest Method
ColorWhite/Light GreyWhite/Light GreyWhite/Light GreyWhite/Light Grey-
Bare HDPE thickness0.75mm0.8mm0.9mm1.2mmASTM D3767
Tensile Strength21N/mm225N/mm225N/mm225N/mm2ASTM D412
Elongation400%500%500%500%ASTM D412
Low temperature Flexibility-25°C-25°C-25°C-25°CASTM D1970
Peel Adhesive to concrete≥1000N/M≥1500N/M≥1500N/M≥1500N/MASTM D903
Puncture≥800N≥1000N≥1000N≥1200NASTM E154
Resistance to hydrostatic head>70mtr>70mtr>70mtr>70mtrASTM D751-06(2011)
Linear dimensional change0.1%0.1%0.1%0.1%ASTM D1204
UV Exposure test (45 days)No changeNo changeNo changeNo changeASTM G153

Storage Conditions

The height of horizontal storage for the rolling material shall not be over five layers, and the rolling material shall be stacked in a single layer when it is vertically storaged.
Avoid the sun, avoid the rain and pay attention to the ventilation. The ambient temperature should not be higher than 45°C, and the relative humidity should not be over 80%.
When they are stored at the same time, the multiple types and specifications of products should be separately placed according to the different types and specifications, and should not be mixed to prevent any misuse.
Under the normal storage conditions, the warranty period of product is 1 year since the date of production. After the expiration date, the recheck and confirm of product that the test is qualified must be done before any use of product.


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