Non Woven Fabric or Nonwoven cloth, also known as nonwovens, is composed of directional or random fibers. It is called cloth because it has the appearance and certain properties of cloth. Simply put: it is not made of yarns interwoven and braided together, but the fibers are directly bonded together by physical or chemical methods. Non-woven fabric manufacturer process flow, non-woven fabric production fibers are mainly polypropylene (PP), polyester (PET). In addition, there are nylon (PA), viscose, acrylic, ethylene (HDPE), chlorine (PVC). According to application requirements, non-woven fabrics are divided into two categories: disposable application type and durable type. Non-woven fabrics have no warp and weft threads, which are very convenient for cutting and sewing, and are light and easy to set. Nonwovens break through the traditional textile principle, and have the characteristics of short process flow, fast production rate, high output, low cost, wide use and multiple sources of raw materials. Compared to textile fabrics, it has less strength and durability and cannot be cleaned like other fabrics. Because the fibers are arranged in a certain direction, they are easy to split from the right angle, etc., so the improvement of the production method is mainly focused on the improvement of preventing splitting. Non-woven fabrics can be divided into different production processes.
◆Spunlace non-woven fabric is to spray high-pressure fine water flow onto one or more layers of fiber network, so that the fibers are entangled with each other, so that the fiber mesh can be reinforced and has a certain strength. Features: 1. Flexible entanglement, does not affect the original characteristics of the fiber, does not damage the fiber. 2. The appearance is closer to traditional textiles. 3. High strength, low piling. 4. High hygroscopicity, fast moisture absorption. 5. Soft hand feeling, good drape. 6. The appearance is changeable. 7. Long production process and large footprint. 8. The equipment is complex, the energy consumption is large, and the water quality requirements are high. Product applications: medical curtains, surgical gowns, surgical covers, medical dressing materials, wound dressings, medical gauze, aviation rags, clothing lining fabrics, coated substrates, electronic industry advanced rags, cotton pads, wet wipes, mask covering materials, etc.
◆Heat-bonded non-woven fabric refers to the addition of fibrous or powdered hot-melt bonding reinforcement materials to the fiber mesh, and the fiber mesh is then heated and melted and cooled to strengthen into cloth. Features: The surface bonding hot rolling surface is relatively smooth, and the point bonding hot rolling is relatively fluffy. Product application: production of baby diapers and women's sanitary napkin wrapping materials, ointment base cloth, clothing lining, masks, etc.
◆Pulp airborne mesh non-woven fabric can also be called dust-free paper, dry papermaking non-woven fabric. It uses airborne web technology to open the wood pulp fiberboard into a single fiber state, and then use the airflow method to agglomerate the fibers on the mesh curtain, and then strengthen the fiber mesh into cloth. Features: good fluffiness, soft feeling, super moisture absorption. Product application: medical hygiene materials, especially superabsorbent disposable hygiene products (such as diapers, sanitary napkins, wet wipes, wipes, etc.).
◆ Wet non-woven fabric is to open the fiber raw materials placed in the water medium into a single fiber, and at the same time mix different fiber raw materials to make a fiber suspension slurry, the suspension slurry is transported to the network forming mechanism, and the fiber is formed into a network in a wet state and then reinforced into a cloth. Features: 1. High production speed, can reach 400m/min. 2. You can make full use of staple fiber. 3. The uniformity of the product fiber mesh is good. 4. Large water consumption and high one-time investment. Product application: 1. Special paper: dust/liquid filter paper, tea bags. 2. Industrial use: filters, insulation materials, sound absorbing materials. 3. Medical use: medical backing, medical tape, surgical bag wrapping material. 4. Civil: wallpaper, etc. ◆Spunbond non-woven fabric is after the polymer has been extruded and stretched to form a continuous filament, the filament is laid into a net, and the fiber mesh is then subjected to self-bonding, thermal bonding, chemical bonding or mechanical reinforcement methods to make the fiber mesh become a non-woven fabric. Features: 1. The fiber mesh is composed of continuous filament. 2. Excellent tensile strength. 3. There are many changes in the process, and a variety of methods can be used to strengthen it. 4. Wide range of filament tread variation. Product application: 1. Polypropylene (PP): geotextile, tufted carpet base fabric, coated base cloth, medical and health materials, wrapping materials with disposable products, etc. 2. Polyester (PET): filter material, lining material, tufted carpet base fabric, agricultural material, packaging material, etc.
◆The process of meltblown non-woven fabric: polymer feeding--- melt extrusion --- fiber formation--- fiber cooling --- forming a network--- reinforcement into cloth. Features: 1. The fiber mesh is composed of extremely fine shorter fibers. 2. Good uniformity of the web, soft feeling. 3. Good filtration performance and liquid absorption performance. 4. The fiber mesh strength is poor. Product application: filter materials, medical and health materials, clothing materials, battery separator materials, wiping materials.
◆Needle-punched non-woven fabric is a kind of dry non-woven fabric, and needle-punched non-woven fabric is to use the puncture effect of the needle to strengthen the fluffy fiber mesh into cloth. Features: 1. Flexible entanglement between fibers, with good dimensional stability and elasticity. 2. Good permeability and filtration performance. 3. Feel plump and fluffy. 4. Various collection patterns or three-dimensional molding products can be manufactured according to requirements.