Geotextiles have a great impact on modern buildings by stabilizing the ground, improving drainage and filtration, separating aggregates and dispersing the loads imposed. Ensuring that you choose the right geotextile for the project means knowing the difference between them. The key is whether they are woven or non-woven. Now let us distinguish woven and non-woven geotextile through the my post.

What Is Geotextiles Fabrics？

Geotextiles are fabrics used for geotechnical applications. Such as highway and railway embankments, earth embankments and coastal protection structures. Additionally, It designed to perform one or more basic functions, such as filtration, drainage, soil layer separation, reinforcement or stabilization.

Woven geotextiles

Basically, woven geotextiles are made by weaving individual yarns on a loom to form a uniform length. Different materials can be used. These materials are such as slit film, fibrilized yarn and monofilament. But the weaving technology is constant regardless of the material used.

This ensures the strength of the woven geotextile, making it an excellent choice for road construction, under the driveway, residential streets, highways and other applications.

Woven geotextiles have poor water permeability, with only a few exceptions, so they are not the best choice for drainage works. On the contrary, they are very suitable for long-term separation and reinforcement applications and are corrosion resistant.

Non-woven geotextile

Although the tensile strength of nonwoven geotextile is lower than that of woven fabric. However it still has strong strength, durability and excellent drainage performance.

Nonwoven geotextile is a kind of felt-like fabric, which is made by thermally bonding polypropylene or a mixture of PP and polyester fibers. And then it is finished by needling, calendering and other methods.

This type of geotextile is easier to cut. It has high water permeability. And also it will not lose its strength over time. In the same way as woven fabrics used underground. This makes it very suitable for use under driveways and roads and in land and rainwater drainage systems. Three situation of above mention require long-term ground stabilization and filtration.

Difference Between Wovens Geotextiles And Non-wovens

There are significant differences between woven geotextiles and nonwoven geotextiles, especially in their application and manufacturing methods. The type of project you are working on will determine the geotextile that is most suitable for you. The main differences between woven geotextile and nonwoven geotextile are as follows:

1. Firstly, woven geotextiles are the best choice for reinforcement and stabilization applications, while nonwoven geotextiles are very suitable for filtration, separation and drainage applications.
2. Secondly, woven geotextiles (with a few exceptions) are semi-impermeable and have a low flow rate, while nonwoven geotextiles are permeable and have a high flow rate.
3. Thirdly, woven geotextile has high bearing capacity and tensile strength, and is usually used for road construction, while nonwoven geotextile is usually measured by weight.
4. Both woven and nonwoven geotextiles can be made of polyester or polypropylene yarn or fiber.

More than half a century ago, when nonwovens were regarded as low-cost substitutes for traditional textiles, the term “nonwovens” became popular. However, today, non woven technology is the most modern method used in the branch of textile industry. Honorably, we will directly introduce about non woven fabric uses and related advantages of nonwovens in this article.

What Is Non-wovens?

Firstly, we have to know what non-wovens are? Actually, non-wovens consist of fibers, filaments or cut yarns that form webs by a variety of methods, including mechanical, chemical or physical methods (BSI, 2011). Typical examples include agricultural fabrics, rags, disposable laboratory coats, surgical clothing and road reinforcement. The types of fibers used to make nonwovens are usually polyethylene, polypropylene, polyester and viscose, although medical end-use items can be made of cotton.

How Non Woven Fabrics Process?

Nonwovens are usually made by putting small fibers together in the form of sheets or nets (similar to paper on paper machines). Then bind them mechanically. Like felt, they can be interlocked with serrated needles to make the friction between fibers produce stronger fabrics. Use adhesive or heat. Melt the adhesive onto the web by applying the adhesive and increasing the temperature. Generally, the adhesive is in the form of powder, paste or polymer melt.

Nonwoven Applies In Medical Industry

Non woven fabric uses have traditionally been for medical applications. However, we use medical products generally to maintain a high level of hygiene and avoid cross infection. Then why can non-woven fabrics be used for medical purposes? This is because that non-woven fabrics have relatively low production costs, versatility combined with various mechanical properties. In adition, It is easy handling, low lint and harmless to human body, non-toxic. At present, they have also made significant progress in the growing field of medical care and health applications. Well, let’s know the advantages of non wovens below.

Advantages Of Non-woven Fabrics

Nonwovens fabric can maintain its durability under wet and dry conditions. Meanwhile, it also can resist abrasion and is difficult to disassemble. When nonwoven is wet, it hardly absorbs any moisture. Hereby, list the advantages of nonwoven, and know it much more.

Light weight-

Polypropylene resin is the main raw material for production, its specific gravity is only 0.9, only three feet of cotton, with a fluffy feeling and good handle.

Non-toxic and non-peeling-

Products produced with FDA food-grade raw materials do not contain other chemical ingredients, have stable performance, are non-toxic, have no peculiar smell, and will not stimulate the skin.

Waterproof and breathable-

Polypropylene sheet does not absorb water and does not contain water. The finished product has good waterproof performance and is composed of 100% fiber. It is porous and has good permeability. It is easy to keep the cloth dry and easy to clean.

Antibacterial performance-

This product can remove water without mildew, and also can isolate the erosion of mold and bacteria without mildew.

We use “raw carbon fiber” and waste and cut fiber from the carbon fiber processing industry (in other words, recycled carbon fiber) to produce nonwovens. In the past few years. The use of carbon fiber has proved many times that its unique characteristics have completely changed the entire industry and generated new impetus. These fibers are attractive not only because of their special appearance, but also because of their functional characteristics. Therefore, they can be used to solve different problems and requirements in various technologies, such as lightweight structure, corrosion resistance and material sustainability. So today, we will discuss the carbon fiber nonwoven through the post.

What Is Nonwoven?

Nonwoven fabrics are widely defined as sheet or mesh structures that are mechanically, thermally or chemically combined by winding fibers or filaments. It is also as well as through perforated membranes. In additionnal, they are flat porous sheets made directly from individual fibers or molten plastics or plastic films. Because non wovens are not made by weaving or knitting, and do not need to convert fibers into yarn.

Benefits About Carbon Fiber Nonwoven

1. Compared with “original carbon fiber” textiles, the cost advantage of carbon fiber nonwoven can reach 70%.
2. When it compared with glass fiber reinforced components, up to 60% weight can be saved in the final product with the same performance.
3. Again, it compared with aluminum parts, the weight of the final product can be saved by 70%, with the same performance.
4. As the raw material of carbon fiber nonwovens, the fibers are provided by the carbon fiber processing industry and used as leftovers in the production of fabrics and non-crimped fabrics. In addition, the fibers of “end of life” components can also be used for nonwoven production.

About Carbon Fiber Nonwoven, A Production Waste

Now, the innovation of nonwovens is as rapid as the growth of demand. Meanwhile, almost all industries have unlimited possibilities to adapt nonwovens fabrics. Certainly, carbon fibrers nonwovens also occupy a certain market at the same time.

This guide focuses on a series of case studies. It includes the development of carbon fiber nonwovens from production waste by Sigmatex, headquartered in Runcorn, UK. Peter Sestic, the chief textile engineer of Sigmatex. He explained that up to 30% of carbon fibers eventually become waste in the manufacturing supply chain.

Waste reduction is a major issue in the composite industry. And also Sigmatex has a strong incentive to minimize its environmental footprint. Therefore, the company developed a technology for recycling carbon fiber waste and converting it into non-woven fabrics. The nonwoven fabric is made of original fiber/size fiber to maximize the resin compatibility in the composite stack. It is as an economic way to increase the stiffness and volume.

The length of the fiber is usually 30-70mm and is randomly oriented. It is worth noting that the recycling route can reduce the landfill contribution of Sigmatex by up to 90%. Actually, it is about 150 tons per year.

How Do We Send The Waste Back To The Recycling

The fibers used as raw materials for carbon fibrers nonwoven are provided by the carbon fiber processing industry. These can be leftovers from fabric and loose cloth production, or fibers from “end of life” components. In addition, to pure carbon fiber, blends with other fiber types (such as thermoplastic fiber) can also be processed according to customer requirements.

About fabric, it is an artificial material developed in ancient times and still has numerous uses. Generally, there are three ways to manufacture fabrics:; Knitting, knitting and nonwovens. Among these processes, nonwovens are the latest fabric manufacturing process. As senior insiders for nonwoven fabric manufacturing, we have many years of practical experience to purchase perfect textiles for the project according to the needs of customers. As well known fabrics are made in a way that contributes to their use. Meanwhile, the main difference between fabrics is whether they are woven or non-wovens. Let’s discuss about woven and non-woven fabrics below.

Tell You What Difference between non-woven and wovens

Non-woven fabrics

Nonwoven fabric is a type of textile fabric or a manufactured sheet made of fiber layers, which can be a carding fiber mesh, fiber mesh or any system of fibers or threads laid or oriented arbitrarily, and may be combined with textile or non-woven materials (such as conventional woven fabric, plastic film, foam layer, metal foil, etc.). In addition, it is also a textile product with mechanical or chemical combination.

About woven fabrics

Woven fabric is the more traditional of these two fabrics. Woven fabrics are formed by weaving many threads vertically together. The thread that passes through the fabric vertically is the warp thread, and the weft thread is the thread that passes through the fabric horizontally. In short, the latitude is the horizontal line, and the combination of longitude is the basis. When knitting, you only need to alternate between warp and weft. The knitting process is best to stretch the warp on the loom. The strength of woven fabrics depends on the type of thread or yarn used, and it can be made of many different fibers, which makes woven fabrics very versatile. Most clothing fabrics are woven, including shirts, pants, and even denim.

Distinguish the nonwoven fabric and wovens

Although in some cases, non-woven fabrics may be stronger than woven fabrics, the durability of non-woven fabrics depends entirely on their manufacturing methods.

For example, disposable plastic bags and surgical clothes are examples of non-woven materials, but it is obvious which needs to be stronger. If you are designing a product, it is important to weigh the functions of the product to determine what type of fabric you need.

Woven and non-wovens are umbrella categories of different types of fabrics, including nylon, denim, cotton, polyester, etc. Deciding whether to use woven or non-woven is a good place to start the fabric decision-making process.

Manufacturing Technology For Nonwovens

The nonwovens manufacturing technology is basically a continuous process, in which the fiber mesh laying and fiber mesh bonding are carried out by two continuous machines. Generally speaking, the forming process of nonwoven fabrics includes two basic steps, namely, forming a net first and then bonding.

First method

The formation of fiber web in nonwoven production is a key factor in the performance of end-use products. There are three basic ways to form a web: dry paving; Wet paving; And lay the polymer.

Second method

The latter is classified as spinning web and melt-blown web, which is especially suitable for synthetic polymers. There are three basic types of bonding: chemical bonding, thermal bonding and mechanical bonding.

Third method

The natural fiber mesh can be successfully bonded by mechanical process without any additives. Chemical or thermal bonding requires additional adhesive polymers or synthetic fibers.