Hey there! As a supplier of non woven fabric, I'm super excited to walk you through the production processes of meltblown non woven fabric. It's a fascinating journey from raw materials to the final product, and I can't wait to share it with you.
Step 1: Selecting the Raw Materials
The first step in making meltblown non woven fabric is choosing the right raw materials. Typically, polypropylene (PP) is the go - to material. It's got some great properties like being lightweight, strong, and resistant to moisture. The quality of the polypropylene really matters here. We source high - grade PP pellets that have the right melt flow rate. A proper melt flow rate ensures that the polymer can be melted and extruded smoothly in the next steps.
Step 2: Melting the Polymer
Once we've got our polypropylene pellets, it's time to melt them down. We use an extruder for this process. The extruder is like a big, high - tech oven. It heats the PP pellets to a temperature between 200°C and 300°C. As the temperature rises, the solid pellets turn into a molten, viscous liquid. This molten polymer is then pushed forward through the extruder by a screw mechanism. The screw helps to mix the polymer evenly and keep a consistent flow of the molten material.
Step 3: Extrusion through Spinnerets
After the polymer is melted, it's ready to be extruded. We push the molten polymer through a spinneret, which is a plate with a bunch of tiny holes in it. These holes are usually really small, around 0.2 to 0.6 millimeters in diameter. As the molten polymer passes through these holes, it forms long, thin filaments. The size and shape of the holes in the spinneret play a crucial role in determining the diameter and properties of the filaments.
Step 4: High - Speed Air Blowing
Right after the filaments come out of the spinneret, we hit them with a blast of high - speed hot air. This high - speed air blows the filaments and stretches them. The air also cools the filaments rapidly, causing them to solidify. The high - speed air flow breaks the filaments into shorter lengths and gives them a random, entangled structure. This entangled structure is what gives meltblown non woven fabric its unique properties, like high porosity and good filtration efficiency.
Step 5: Web Formation
As the stretched and cooled filaments are blown by the air, they land on a collecting screen or conveyor belt. The filaments start to pile up and form a web. The random arrangement of the filaments in the web makes the fabric strong in all directions. The thickness and density of the web can be controlled by adjusting the speed of the conveyor belt and the flow rate of the polymer.
Step 6: Bonding and Finishing
Once the web is formed, it might need some bonding to make it even stronger. There are different methods of bonding, such as thermal bonding, chemical bonding, or mechanical bonding. Thermal bonding involves heating the web to a certain temperature so that the filaments fuse together at their contact points. Chemical bonding uses adhesives to stick the filaments together. Mechanical bonding can be done by needle punching or hydroentangling.
After bonding, we might do some finishing touches. This could include adding antistatic agents, water - repellent coatings, or other functional treatments depending on the end - use of the fabric.
Applications of Meltblown Non Woven Fabric
Meltblown non woven fabric has a wide range of applications. It's commonly used in the medical industry for making surgical masks, respirators, and medical gowns. The high filtration efficiency of the fabric helps to block out bacteria and viruses. In the hygiene industry, it's used for products like baby diapers and sanitary napkins. The fabric's softness and absorbency make it a great choice for these applications.
If you're interested in our non woven fabric products, we've got some great options. Check out our Non Woven Fabric for Disposable Bed Sheet, which is perfect for hospitals and hotels. We also have Disposable Eco - friendly Pp Non - woven Fabric, which is a great choice for those who are environmentally conscious. And if you're looking for something with a bit of style, our Blue Color Disposable Non Woven is a cool option.
Contact for Procurement
If you're in the market for high - quality meltblown non woven fabric or any of our other non woven products, don't hesitate to reach out. We're here to answer all your questions and discuss your specific requirements. Whether you need a small quantity for a trial or a large order for your business, we've got you covered.
References
- "Nonwoven Fabric Handbook" - A comprehensive guide that covers the production, properties, and applications of non woven fabrics.
- Journal of Nonwoven Fabrics Research - Articles in this journal often provide in - depth research on the latest techniques and developments in non woven fabric production.