Polylactic acid non-woven fabric materials can combine the inherent performance advantages of polylactic acid with the structural characteristics of ultrafine fibers, large specific surface area, and high porosity of non-woven fabric materials, and have broad application prospects in the field of air filtration.
The application of polylactic acid non woven fabric in the air filtration industry can be mainly divided into mask filter materials and environmentally friendly filter materials (industrial smoke and dust filtration, air purification, personal protection, etc.).
So, what are the advantages and characteristics of using polylactic acid non-woven fabric as an air filtration material?
Biodegradability
For mask filter materials, biodegradability is a very important characteristic. The traditional mask filter layer uses double-layer melt blown PP non-woven fabric, which is almost non degradable. Abandoned masks, whether flowing into rivers and oceans or buried in soil, pose a huge threat to the ecosystem.
The mask filter layer made of polylactic acid material can not only effectively filter harmful substances such as dust and bacteria in the air, but also degrade after use and disposal, reducing the pressure on the ecosystem.
When polylactic acid fiber products are exposed to natural environments with certain temperature and humidity (such as sand, silt, seawater), polylactic acid can be completely decomposed into carbon dioxide and water by microorganisms. If polylactic acid fibers are buried in soil, the natural degradation time is about 2-3 years; If polylactic acid fibers are mixed with organic waste and buried, they will decompose within a few months.
Polylactic acid product waste can be completely decomposed into carbon dioxide and water under industrial composting conditions (temperature 58 ℃, humidity 98%, and microbial conditions) for 3-6 months.
Antibacterial and deodorizing agents
The particularity of polylactic acid fiber lies in its ability to not only achieve “physical filtration”, but also “biological filtration”. The surface of PLA fiber is weakly acidic, which can inhibit the growth of microorganisms and reduce the spread of allergens and bacteria in the air to a certain extent. In terms of deodorization, it mainly relies on its own acidity to destroy the cell structure of odor causing bacteria, kill odor causing bacteria, and achieve the effect of deodorization.
Based on this characteristic, polylactic acid disposable biodegradable masks have significant deodorizing effects and can be worn for a long time without breathing. Used for household air filtration equipment, the filtered air is fresh and odorless, while effectively preventing the filter material from moldy and sticking, extending its service life.
Filtering performance
Polylactic acid fibers have certain filtering properties, and their fiber fineness and cross-sectional shape can be designed to optimize air flow and particle capture, effectively filtering out small particles and pollutants in the air.
High breathability
The structural design of polylactic acid fibers can achieve high breathability, ensuring smooth air flow without affecting the efficiency of air circulation.
Good tensile strength
Polylactic acid fibers have high tensile strength, which makes air filter cotton more durable and less prone to deformation or damage during use.
Strength and toughness
Non woven fabrics made from polylactic acid fibers can achieve high strength and excellent toughness to meet the folding requirements of some application scenarios.With the progress of social development and technological innovation in the textile industry, polylactic acid materials with richer functionality will provide users with more choices.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Oct-08-2024