Polyethylene polypropylene water-proof coiled-material with reinforced inner layer and its production method

Abstract

This invention relates to a interface layer enhancement type polyethylene abicin terylene waterproof roll, it includes polyethylene water-proof layer, fiber web reinforced layer and non-melt block cloth web on both sides, its features are that the water-proof layer has two layers, the reinforced layer is between the two water- proof layers, the length and width range of the fiber web mesh are both 0.2-2.0cm, the black part area is at least more than 50% of the web mesh whole area. This invention can use melt flow rack extrusion method to produce, also can use polyethylene film twice heating method to produce. The tensile strength of the coiled material is greatly improved by the reinforce polyethylene water proof interface layer. The composition of polyethylene and the cloth will not be affect because the fiber web is between two polyethylene films. The middle fiber web can be very compactly wrapped by the great viscosity of the melted polyethylene or the heated polyethylene film. The composition of the two layers of polyethylene are also very good, other performances of the coiled material will not reduced.

Description

technical field [0001] This application relates to waterproofing membranes, especially core reinforced polyethylene polypropylene fiber waterproofing membranes. Background technique [0002] Polyethylene polypropylene waterproof membrane is made of polyethylene synthetic polymer material as the main waterproof layer and polypropylene non-woven fabric after heating and compounding. Due to its strong impermeability, corrosion resistance, rough surface and large friction coefficient, it can be directly bonded with cement during the solidification process, and its construction is relatively simple, so it is more and more favored by consumers. The traditional polyethylene polypropylene waterproof membrane is composed of a polyethylene waterproof membrane in the middle and non-woven fabrics on both sides. However, due to the small thickness of the polyethylene polypropylene waterproof membrane, the tensile strength is relatively small, generally 60-70N / cm or so, with the improve...

AI Technical Summary

Problems solved by technology

Its advantage is high tensile strength, and its disadvantage is: because the polyethylene film is a single layer, the fiber web cannot be completely covered by the single layer polyethylene film, and there are always leaks in contact with the outer non-woven fabric, which is It will affect the compounding of the polyethylene film and the non-woven fabric on both sides, resulting in a greatly reduced technical performance (peel strength) of the waterproof membrane, which is not advisable in actual production

Images