What is non woven fabric?
Non woven fabric is a new type of environmentally friendly material. Unlike traditional textiles that require complex processes such as spinning and weaving, it is a fiber network material formed by mixing fibers or fillers with glue or melted fibers in a molten state using membrane, mesh, or felt methods. Non woven fabrics have high strength, good breathability, wear resistance, good flexibility, waterproof and moisture-proof properties, and have therefore been widely used in daily life.
What is the degradation status of nonwoven fabric?
Non woven fabric is different from biodegradable plastics in that it is composed of synthetic fibers, wood pulp fibers, recycled fibers, and other materials, and cannot be degraded or decomposed by microorganisms. Even in natural environments, non-woven fabrics take decades, even centuries, to decompose. If a large amount of non-woven fabric is disposed of in the environment for a long time, it will cause great harm to nature.
However, there are also some biodegradable non-woven fabric materials available now, and whether non-woven fabric is biodegradable depends on its material composition. Non woven fabrics made from polylactic acid (PLA) and other biodegradable materials can be biodegraded, while non-woven fabrics made from traditional plastic materials such as polypropylene (PP) and polyethylene (PE) cannot be biodegraded.
Definition and advantages of biodegradable non-woven fabrics
Biodegradable non-woven fabric refers to non-woven fabric that can be decomposed by microorganisms, animals and plants, hydrolysis or photolysis under certain conditions. Compared with traditional plastic non-woven fabric, it can effectively reduce environmental pollution.
In modern society, ecological environment protection has become a global concern, and biodegradable non-woven fabrics are highly favored due to their environmental characteristics.
Types and characteristics of biodegradable nonwoven fabrics
The commonly used biodegradable non-woven fabrics currently include the following three types:
Starch based biodegradable non-woven fabric
Starch based biodegradable non-woven fabric is an environmentally friendly non-woven fabric mainly composed of starch and made by adding plasticizers, reinforcing agents, reinforcing materials, etc. Compared with traditional plastic non-woven fabrics, starch based biodegradable non-woven fabrics have excellent antioxidant properties and good biodegradability. In addition, starch based biodegradable non-woven fabric has low cost and is an environmentally friendly non-woven fabric with high cost-effectiveness.
Polylactic acid based biodegradable non-woven fabric
Polylactic acid based biodegradable non-woven fabric is an environmentally friendly non-woven fabric made mainly of polylactic acid through polymer chemical methods. Compared with traditional plastic non-woven fabrics, polylactic acid based biodegradable non-woven fabrics have good biodegradability and chemical stability. In addition, polylactic acid based biodegradable non-woven fabric can effectively degrade CO2 and water, releasing a large amount of heat energy, making it an ideal environmentally friendly non-woven fabric.
Cellulose based biodegradable non-woven fabric
Cellulose based biodegradable non-woven fabric is an environmentally friendly non-woven fabric mainly composed of cellulose and made by adding reinforcing agents and materials. Compared with traditional plastic non-woven fabrics, cellulose based biodegradable non-woven fabrics have good biodegradability and physical properties. In addition, cellulose based biodegradable non-woven fabric also has good breathability and moisture absorption, making it a relatively ideal environmentally friendly non-woven fabric.
Conclusion
Non woven fabric itself degrades slowly, but there are also biodegradable non-woven fabric materials available now. For non-woven fabric materials that cannot be quickly degraded, safe and environmentally friendly methods should be adopted to reduce their impact on the environment. For biodegradable non-woven fabric materials, there should be increased promotion and push. Make more people aware of the impact of non-woven fabrics, jointly protect our environment, and achieve sustainable development.
Post time: Sep-03-2024