Processing Mode and Applications of Nonwovens
Nonwovens, also known as nonwoven fabric or simply nonwovens, is a type of textile material that is produced by bonding fibers together, typically without the use of traditional weaving or knitting methods. Unlike woven fabrics, where threads are interlaced, nonwoven fabrics are created by mechanically, thermally, or chemically bonding or entangling fiber
According to production process
Water Jet Nonwovens:
High-pressure fine water jets are sprayed onto a layer or multiple layers of fiber web, causing the fibers to interlace with each other, thereby reinforcing the web and giving it a certain strength.
Heat Bond Nonwovens:
In the fiber web, fiber-shaped or powder-shaped thermoplastic bonding materials are added. The fiber web is then heated, melted, cooled, and solidified into fabric.
Pulp Airflow Forming Nonwovens:
Also known as dust-free paper or dry-forming nonwoven fabric. It utilizes airflow forming technology to loosen wood pulp fiberboard into individual fiber states. The fibers are then collected on a forming curtain using airflow, and the resulting web is further solidified into cloth.
Wetlaid Nonwovens:
Fiber raw materials placed in a water medium are loosened into individual fibers. Simultaneously, different fiber raw materials are mixed to create a fiber suspension, which is then transported to a forming mechanism. The fibers form a web in a wet state and are further solidified into fabric.
Spunbond Nonwovens:
After polymers have been extruded, stretched to form continuous filaments, these filaments are laid out into a web. The web is then self-adhered, thermally bonded, chemically bonded, or mechanically reinforced to transform it into nonwoven cloth.
Meltblown Nonwovens:
High-temperature molten polymers are extruded through nozzles to form fibers. These fibers are then scattered by airflow or rollers, covering a collection belt. Finally, the fibers are cooled and solidified to create the cloth.
Needle-punched Nonwovens:
A type of dry-laid nonwoven fabric, needle-punched nonwoven fabric utilizes the puncturing action of needles to strengthen a loose fiber web into a cohesive fabric.
Stitch-bonded Nonwovens:
Another type of dry-laid nonwoven fabric, stitch-bonding involves using a chain stitch structure to reinforce a fiber web, yarn layers, non-textile materials (such as plastic films, thin metal foils, etc.), or their combinations to create a nonwoven fabric.
Classification Based on Purpose:
Medical and Hygiene Nonwovens: Surgical gowns, protective suits, disinfection wrap, face masks, diapers, household wipes, cleaning cloths, wet wipes, magic towels, roll towels, beauty products, sanitary pads, disposable hygiene cloths, etc.
Home Decor Nonwovens: Wall coverings, tablecloths, bed sheets, bedspreads, etc.
Apparel Nonwovens: Lining, fusible interlining, wadding, shaping cotton, various synthetic leather base fabrics, etc.
Industrial Nonwovens: Filter materials, insulation materials, cement packaging bags, geotextiles, covering fabrics, etc.
Agricultural Nonwovens: Crop protection cloth, seedling cloth, irrigation cloth, thermal curtains, etc.
Other Nonwovens: Space cotton, thermal and sound insulation materials, oil-absorbent felt, cigarette filter tips, tea bag envelopes, etc.
Nonwovens Characteristics:
- Versatility: Nonwovens can be engineered with specific properties like softness, strength, absorbency, and breathability.
- Porosity: The level of openness in the fabric can be controlled, making nonwovens suitable for various applications.
- Cost-Effective: Nonwovens production can be efficient and cost-effective, contributing to its widespread use in disposable products.
Applications of Nonwovens:
- Healthcare: Surgical gowns, face masks, and medical wipes.
- Hygiene Products: Diapers, sanitary napkins, and wet wipes.
- Home and Cleaning: Cleaning wipes, dust covers, and disposable cloths.
- Automotive: Car interiors, headliners, and filters.
- Agriculture: Crop covers, plant protection, and gardening fabrics.
- Packaging: Reusable shopping bags and packaging materials.
Advantages of Nonwovens:
- Disposable: Widely used in single-use or disposable products due to its cost-effectiveness.
- Customization: Nonwovens can be tailored for specific applications by adjusting fiber types, processes, and treatments.
- Rapid Production: Nonwoven fabrics can be manufactured quickly, making them suitable for high-volume production.
- Environmental Considerations: While nonwoven cloth are often used in disposable products, efforts are being made to develop environmentally friendly options, such as biodegradable or recyclable nonwovens.
While nonwovens are often used in disposable products, efforts are being made to develop environmentally friendly options, such as biodegradable or recyclable nonwovens. Nonwovens play a crucial role in various industries, offering a wide range of applications due to their versatility and adaptability. Their use continues to evolve with advancements in technology and a growing emphasis on sustainable practices in manufacturing.