Lightweight self-adhesive impermeable waterproof coiled material

Abstract

The utility model discloses a light-weight self-adhesion anti-seepage waterproof roll which comprises an isolating membrane, a hot melt adhesive layer and a main body material layer which are sequentially arranged in a stacked mode. The main body material layer is of a three-layer structure and comprises a foaming layer located in the middle and dense layers located on the two sides. The light-weight self-adhesion anti-seepage waterproof coiled material is reasonable in structure, and the foaming layer is arranged in the middle of the main body material layer, so that the self weight of the coiled material can be reduced on the premise that the thickness of the coiled material is not reduced, the light-weight requirement is met, and the construction difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to a lightweight self-adhesive impermeable waterproof coiled material. Background Art

[0002] Waterproof coiled materials are mainly used in building walls, roofs, tunnels, highways, landfills, etc., to play a role in resisting external rainwater and groundwater seepage. They are a kind of flexible building materials that can be coiled into a roll shape. As a leak-free connection between the engineering foundation and the building, they are the first barrier for the waterproofing of the entire project and play a crucial role in the entire project. Waterproof coiled materials are required to have good water resistance, stability to temperature changes, certain mechanical strength, extensibility and fracture resistance, and certain flexibility and anti-aging properties, etc. High-molecular self-adhesive impermeable waterproof coiled materials usually use high-molecular sheets as carriers, hot-melt pressure-sensitive adhesives as adhesive layers, and release films are attached to the surface as anti-sticking layers to form a large-area waterproof effect through mutual overlap, effectively solving the purpose of waterproofing and anti-seepage of underground projects.

[0003] At present, with the increasing width and length of the coiled materials used, the weight also increases accordingly, which brings inconvenience to the construction of workers, increases the operation burden of workers, and at the same time reduces the construction efficiency of waterproof coiled materials. Therefore, reducing the weight of self-adhesive impermeable waterproof coiled materials has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of the utility model is to provide a lightweight self-adhesive impermeable waterproof coiled material, which has a reasonable structure, can reduce the self-weight of the coiled material, meet the lightweight requirements, and is beneficial to reducing the construction difficulty.

[0005] To achieve the above purpose, the technical solution of the utility model is to design a lightweight self-adhesive impermeable waterproof coiled material, which includes a release film, a hot-melt adhesive layer and a main material layer stacked in sequence;

[0006] The main material layer is a three-layer structure, including a foaming layer in the middle and dense layers on both sides.

[0007] Preferably, the foaming layer is formed by foaming with expandable microspheres.

[0008] Preferably, the thickness of the main material layer is 0.7 - 1.2 mm.

[0009] Preferably, the thickness of the hot-melt adhesive layer is 0.25 - 0.5 mm.

[0010] Preferably, the thickness of the main material layer is 0.9 mm, the thickness of the foaming layer is 0.7 mm, and the thickness of the hot-melt adhesive layer is 0.3 mm.

[0011] The advantages and beneficial effects of the present utility model are as follows: It provides a lightweight self-adhesive impermeable waterproof coiled material with a reasonable structure. By setting a foaming layer in the middle of the main material layer, the self-weight of the coiled material can be reduced without decreasing the thickness of the coiled material, meeting the lightweight requirement and being beneficial to reducing the construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the present utility model.

[0013] Figure 2 is a cross-sectional comparison diagram of the dense layer and the foaming layer in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0015] The technical solution specifically implemented by the present utility model is as follows:

[0016] As Figure 1 and Figure 2 shown, a lightweight self-adhesive impermeable waterproof coiled material includes a release film 1, a hot melt adhesive layer 2, and a main material layer that are sequentially stacked.

[0017] The main material layer has a three-layer structure, including a foaming layer 31 in the middle and dense layers 32 on both sides.

[0018] In one embodiment, the foaming layer 31 is formed by expanding microspheres.

[0019] In another embodiment, the thickness of the main material layer is 0.7 - 1.2 mm, and the three layers of the main material layer are all made of polyethylene and ethylene copolymer by melt blending and extrusion through a screw.

[0020] In another embodiment, the thickness of the hot melt adhesive layer 2 is 0.25 - 0.5 mm.

[0021] In another embodiment, the thickness of the main material layer is 0.9 mm, the thickness of the foaming layer 31 is 0.7 mm, and the thickness of the hot melt adhesive layer 2 is 0.3 mm. The three layers of the main material layer are all prepared by co-extrusion and calendaring with HDPE as the base material through a screw extruder.

[0022] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A lightweight self-adhesive impermeable waterproof coiled material, characterized in that, It includes a separator, a hot melt adhesive layer, and a main material layer which are stacked in sequence; The main material layer has a three-layer structure, including a foaming layer in the middle and dense layers on both sides; The foaming layer is formed by foaming with expandable microspheres; The thickness of the main material layer is 0.9 mm, the thickness of the foaming layer is 0.7 mm, and the thickness of the hot melt adhesive layer is 0.3 mm.

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