How to construct non-woven fabric on building roof? What is the function?

Construction method of building roof non-woven fabric: non-woven fabric laying method: hand-rolling; The surface of the cloth should be smooth with appropriate deformation allowance; Filament or short silk geotextile is usually installed by lapping, sewing and welding. The width of splicing and welding is generally greater than 0. 1m, and the overlapping width is generally greater than 0.2M Geotextiles that may be exposed for a long time should be welded or spliced.

During construction, the geotextiles on the geomembrane naturally overlap, and the geotextiles on the geomembrane are sewn or welded by hot air. Hot air welding is the first connection method of filament geotextile, that is, the connection of two pieces of cloth is heated at high temperature instantly with a hot air gun, so that some of them reach a molten state and are firmly bonded together immediately under a certain external force.

In wet (rain and snow) weather, geotextile should adopt another method-sewing connection, that is, double-thread sewing connection with special sewing machine and chemical anti-ultraviolet sewing thread.

Functions of non-woven fabrics: Non-woven fabrics have the functions of strengthening, reinforcing, filtering, linoleum backing, drainage board, roof waterproof material, railway, highway, dike, water slope, port sound insulation, sewer, heat protection, isolation and drainage.

Extended data:

The difference between non-woven fabric and dust-free fabric: non-woven fabric, also known as non-woven, is a new generation of environmental protection materials, which has the characteristics of water repellent, breathable, flexible, non-combustion-supporting, non-toxic and non-irritating, and rich colors. If the nonwoven fabric decomposes naturally outdoors, its longest service life is only 90 days; If it is decomposed indoors within 5 years, it is non-toxic and tasteless, without any residual substances, so it does not pollute the environment and is suitable for washing.

A new fiber product with softness, air permeability and plane structure, which is made directly from polymer chips, short fibers or filaments through various web-forming methods and consolidation techniques, has environmental protection properties that plastic products do not have, and its natural degradation time is much shorter than that of plastic bags. Therefore, non-woven bags made of non-woven fabrics are also recognized as the most economical reusable shopping bags.

The dust-free cloth is made of 100% polyester fiber. Its surface is soft, easy to wipe sensitive surfaces, and will not lose fibers when rubbing. It has good water absorption and cleaning efficiency. The cleaning and packaging of products are completed in the ultra-clean workshop. The optional edge sealing of dust-free cloth generally includes: cold cutting, laser edge sealing and ultrasonic edge sealing.

Ultra-fine fiber dust-free cloth is generally sealed perfectly by laser and ultrasonic; Dust-free cloth, dust-free wiping cloth, superfine fiber dust-free cloth and superfine fiber wiping cloth are made of 100% continuous polyester double-layer fabric with soft surface, which can be used to wipe sensitive surfaces with low dust production, good water absorption and cleaning efficiency.

Especially suitable for dust-free purification workshop. The edges of dust-free cloth, dust-free wiping cloth, superfine fiber dust-free cloth and superfine fiber wiping cloth are sealed by the most advanced trimming machine, so that particles and thread ends will not be left after wiping, and the decontamination ability is strong.

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