Performance introduction and product application of Nonwovens
Nonwovens, also known as non-woven fabrics, are mainly made of polyethylene and polypropylene plastic particles, by-products produced during petroleum refining. Short fibers or filaments are obtained through high-temperature melting, spinning and other processes, and then through friction, embracing and bonding, or a combination of these methods for directional or random arrangement, so as to make sheets, fiber webs or floc pads, It is called "nonwovens" because it does not need to be woven but has the appearance and some properties of cloth.
The production of nonwovens mainly includes base material manufacturing, post-processing and other links, including fiber preparation, netting, reinforcement and post-treatment, that is, the fibers such as polymer chips, short fibers and filaments are connected into a mesh by air flow or mechanical means, then reinforced by water pricking, needle pricking or hot rolling, and finally made into non-woven fabrics through post-treatment. Downstream enterprises further process non-woven materials to form surgical clothes, sanitary napkins, diapers, wet wipes and other products, which are sold to end consumers.
According to the different subdivision process flow, the nonwovens industry can be divided into spunbonded, needled, Spunlaced chemical bonding, thermal bonding and other subdivision fields. The nonwovens produced by different raw materials and processes have different properties, so the downstream application fields are also different. For example, spunbonded nonwovens have high strength, high temperature resistance and poor hand feel, and are used in medical protective clothing, packaging cloth, luggage cloth, automobile interior decoration, etc; Spunlaced nonwovens have the characteristics of air permeability, softness, moisture absorption and high strength. They can be used in medical materials, cosmetic cotton, wet wipes and other products.
The raw materials of nonwovens mainly include polypropylene (polypropylene), polyester (polyester), viscose fiber, acrylic fiber and polyamide fiber. The proportion of use in 2017 was 63%, 23%, 8%, 2% and 1.5% respectively. The different proportion of various raw materials will affect the characteristics and uses of Nonwovens. Before 2000, viscose fiber was most used in the production of nonwovens. After 2000, polypropylene and polyester were popularized in the production of sanitary absorbent materials and medical nonwovens, and gradually occupied a dominant position.
Nonwovens are mainly used in the field of personal hygiene and nursing, such as female hygiene products, baby hygiene products, elderly care products, personal cleaning and nursing products and household hygiene and nursing products. It is mainly used to make the core raw materials of the surface layer, diversion layer and absorption core layer of disposable personal care and hygiene products, which directly affects the performance of the products. The types of nonwovens used for disposable personal care and hygiene products mainly include spunbonded cloth, spun melt cloth, hot-air cloth, hot-rolled cloth and Spunlaced cloth. Chemical adhesive cloth and pulp airflow mesh cloth will also be used as diversion and absorption layer materials.
With the rapid development of sanitary napkin and baby paper diaper market, China has become the country with the largest consumption and fastest growth rate of disposable sanitary products in the world. In 2018, the market scale of disposable sanitary products (including absorbent sanitary products and wipes) in China reached 118.87 billion yuan, an increase of 12.0% at the same time. Among the absorbent sanitary products, women's sanitary products, baby diapers and adult incontinence products accounted for 50.7%, 42.6% and 6.7%. The proportion of women's sanitary products decreased, and the product structure was adjusted to the direction of mature market.
For sanitary products, absorption is an important indicator of testing. Responsible manufacturers will conduct comprehensive testing on the performance of sanitary products before their products are put on the market, so as to maintain a good product brand. The non-woven fabric absorption tester produced by our company is used to detect and evaluate the absorption or water holding capacity of non-woven fabric. It adopts color touch screen input and output, Chinese and English operation menus, and is equipped with automatic lifting mechanism, which makes the operation easier.
Sgj362a nonwovens absorption tester
It is used to detect and evaluate the absorption or water holding capacity of nonwovens.
Compliance with standards:
YY/T0472. 2-2004 and other standards.
1. Color touch screen display and control, Chinese and English interface, menu operation mode.
2. The test pool, tray and drain rack are made of stainless steel.
3. Equipped with constant temperature water bath to ensure the accuracy and reliability of the test water temperature.
4. Fully automatic lifting mechanism, simpler operation.
5. It adopts 32-bit microprocessor, with fast data processing speed and stable and reliable operation.