What is non-woven geotextile and how to classify it?

Non-woven geotextile is a single water-permeable material made by wet-laid process, weaving process, weaving process, non-woven process and so on. Now it has been widely used in environmental protection, airports, water transportation, water conservancy, railways, highways and other public construction fields. In practical applications, it can play the role of crack prevention, isolation, protection, drainage, filtration, etc., with a large range of applications. Classification of non-woven geotextiles: 1. Classification by manufacturing method [1] Composite geotextiles are divided into two-layer composite and three-layer composite according to the product structure. With protection and reinforcement functions, it is mainly used in engineering fields such as soft soil foundation reinforcement and embankment base reinforcement. A geotextile composed of filament woven geotextile or split-membrane woven geotextile (woven geotextile) made of polymer as raw material and staple fiber needle-punched non-woven geotextile. Composite geotextiles are classified according to material composition (1) Short fiber non-woven/plastic woven flat woven/short fiber non-woven composite geotextile (SNG/SWG/SNG). (2) Staple fiber nonwoven/split film woven/short fiber nonwoven composite geotextile (SNG/SWG/SNG) (3) Staple fiber nonwoven/filament woven/short fiber nonwoven composite geotextile (SNG) /FW/SNG) (4) Plastic flat wire weaving/short fiber nonwoven composite geotextile (GFW/SNG) (5) Split film woven/short fiber nonwoven composite geotextile (SWG/SNG) (6) Filament machine Woven/staple fiber non-woven composite geotextile (FW/SNG) [2]. Wet-laid geotextile is made of chopped polyester fiber and glass fiber as raw materials, after being dispersed in water, it is copied, dehydrated, sized and dried. [3] Non-woven geotextiles are fabrics made of short fibers or filaments arranged randomly or oriented in a thin wadding, mechanically bonded, thermally bonded or chemically bonded. [4] The woven geotextile is composed of synthetic fiber filaments (polypropylene, polyester, nylon, vinylon, polyethylene, etc.) or plastic flat yarns, plastic split film yarns arranged in a certain direction and woven geotextile. 2. Geotextiles can be divided into functional functions. [1] Reinforced geotextiles Reinforced geotextiles are mainly used in projects such as reinforced soil structures and reinforced cushions in soft foundation treatment, or combined with geomembranes to form reinforced composite geomembranes. Improve soil Body strength and stability limit soil displacement. A geotextile with a certain tensile strength is buried in the soil and depends on its interaction with the soil interface. [2] Isolation geotextiles are mainly used for embankments Isolation between different particle size fillers, or laying geotextiles on the surface of soft soil to avoid blocking the upper drainage cushion. Geotextiles are laid between different media to prevent adjacent different media from mixing. [3] Wrapped geotextile wrapped type Geotextile products mainly include geotextile bags, geomembrane bags and geotechnical pipe bags, etc. The geotextiles in the bagged sand sandwiched with pebble and gravel filter, and bagged sand wells all have a wrapping function. They are used for slope protection, erosion protection, etc. In engineering, geotextile is used as a wrapper for loose soil, sand and stone or as a carrier of concrete and mortar to form a block with a certain volume and shape. [4] Drainage and filter geotextile is used as a geosynthetic filter layer and bag Sand and gravel filter layer, soft permeable pipe, plastic drainage belt, bagged sand well or composite geomembrane outsourcing material. Drainage filter geotextile is mainly used for slope protection, retaining wall or back filter layer of retaining wall , Drainage blind ditch, soft foundation treatment and other projects. Geotextiles allow liquid and gas to pass vertically, while keeping the soil skeleton particles affected by the seepage force from losing. Part of the geotextile also serves as a horizontal drainage channel. The above is what the small class is about It is an introduction to non-woven geotextiles and how to classify them. If you don’t understand, you can directly contact the relevant personnel of Fujian Nonwovens Co., Ltd.