Meltblown fabric and non-woven fabric are actually the same thing. Meltblown fabric also has a name called meltblown non-woven fabric, which is one of many non-woven fabrics. Spunbond non-woven fabric is a type of fabric made from polypropylene as raw material, which is polymerized into a mesh through high-temperature drawing, and then bonded into a fabric using hot rolling method.
Different process technologies
Spunbond non-woven fabric and melt blown non-woven fabric are both types of non-woven fabric, but their manufacturing processes are different.
(1) The requirements for raw materials are different. Spunbond requires an MFI of 20-40g/min for PP, while melt blown requires 400-1200g/min.
(2) The spinning temperature is different. Melt blown spinning is 50-80 ℃ higher than spunbond spinning.
(3) The stretching speed of fibers varies. Spunbond 6000m/min, melt blown 30km/min.
(4) The stretching distance is not cylindrical. Spunbond 2-4m, melt blown 10-30cm.
(5) Cooling and stretching conditions are different. Spunbond fibers are drawn using 16 ℃ cold air with positive/negative pressure, while melt blown fibers are blown using near 200 ℃ hot air in the main room.
Different product performance
The breaking strength and elongation of spunbond fabric are much higher than those of meltblown fabric, and the cost is lower. But the hand feel and fiber uniformity are poor.
Meltblown fabric is fluffy and soft, with high filtration efficiency, low resistance, and good barrier performance. But it has low strength and poor wear resistance.
Comparison of process characteristics
One of the characteristics of melt blown nonwoven fabrics is that the fiber fineness is relatively small, usually less than 10um (micrometers), with most fibers having a fineness between 1-4um.
The various forces on the entire spinning line from the nozzle of the meltblown die to the receiving device cannot maintain balance (due to fluctuations in stretching force caused by high-temperature and high-speed airflow, as well as the influence of cooling air speed and temperature), resulting in varying fineness of meltblown fibers.
The uniformity of fiber diameter in spunbond nonwoven fabric web is significantly better than that of meltblown fibers, because in the spunbond process, the spinning process conditions are steady-state, and the fluctuations in stretching and cooling conditions are relatively small.
Comparison of Crystallization and Orientation Degree
The crystallinity and orientation of melt blown fibers are smaller than those of spunbond fibers. Therefore, the strength of melt blown fibers is poor, and the strength of the fiber web is also poor. Due to the poor fiber strength of melt blown nonwoven fabrics, the actual application of melt blown nonwoven fabrics mainly relies on the characteristics of their ultrafine fibers.
Comparison between melt blown fibers and spunbond fibers
Fiber length – spunbond is a long fiber, meltblown is a short fiber
Fiber strength – spunbond fiber strength>meltblown fiber strength
Fiber fineness – Meltblown fibers are finer than spunbond fibers
Comparison and summary of spunbond and meltblown processes
| Spunbond | Melt blown method | |
| Raw material MFI | 25~35 | 35~2000 |
| Energy consumption | Less | More often |
| Fiber length | Continuous filament | Short fibers of varying lengths |
| Fiber fineness | 15~40um | Thickness varies, with an average of<5 μ m |
| Coverage rate | Lower | Higher |
| Product strength | Higher | Lower |
| Reinforcement method | Hot bonding, needle punching, water needling | Self bonding is the main method |
| Variety change | Difficulty | Easily |
| Equipment investment | Higher | Lower |
Different properties
1. Strength and durability: In general, the strength and durability of spunbond nonwoven fabrics are higher than those of meltblown nonwoven fabrics. Spunbond non-woven fabric has better tensile strength and stretchability, but it will stretch and deform when pulled; However, melt blown non-woven fabric has poorer stretchability and is prone to direct breakage when pulled with force.
2. Breathability: Spunbond non-woven fabric has good breathability and can be used to make medical masks and other products. However, meltblown non-woven fabric has poor breathability and is more suitable for products such as protective clothing.
3. Texture and Texture: Spunbond non-woven fabric has a harder texture and lower cost, but its texture and fiber uniformity are poor, which is more in line with the needs of certain fashion products. Meltblown fabric is fluffy and soft, with high filtration efficiency, low resistance, and good barrier performance. But it has low strength and poor wear resistance.
4. The surface of spunbond non-woven fabric generally has obvious dot patterns; And meltblown non-woven fabric has a relatively smooth surface with only a few slight patterns.
Different application fields
Due to the different properties and characteristics of the two types of non-woven fabrics, their application fields also differ.
1. Medical and health: Spunbond non-woven fabric has good breathability and a soft touch, suitable for use in medical and health products such as masks, surgical gowns, etc. Meltblown non-woven fabric is suitable for use as a filter layer in the middle of masks, protective clothing, and other products.
2. Other products: The soft touch and texture of spunbond non-woven fabric are suitable for making leisure products, such as sofa covers, curtains, etc. Meltblown non-woven fabric has high filtration efficiency and is suitable for producing various filter material products.
Conclusion
In summary, spunbond nonwoven fabric and meltblown nonwoven fabric have their own characteristics and are suitable for different fields. Consumers can choose more suitable materials based on their product needs.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., a manufacturer of non-woven fabrics and non-woven fabrics, is worthy of your trust!
Post time: Aug-07-2024