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The differences between medical nonwoven materials PP, SMP, SM, and SSPP
Release date:
2022/05/19
S stands for spunbond, a type of nonwoven fabric;
M stands for meltblown nonwoven fabric.
PP stands for polypropylene.
In nonwoven fabric technology, there is a sandwich material known as SMS, which stands for spunbond-spunbond-spunbond. This material combines the excellent strength of spunbond fabrics with the superior barrier properties of meltblown spunbond fabrics and is commonly used in medical products.
SMS nonwoven fabric is produced by combining two distinct processes—spunbond and meltblown. The spunbond nonwoven fabric boasts high strength but exhibits a significant difference in tensile strength between the warp and weft directions, resulting in relatively poor performance. In contrast, the meltblown nonwoven fabric offers exceptional barrier properties and excellent water resistance. By integrating these two materials into a single product, SMS nonwoven fabric achieves robust waterproof performance, superior breathability, and effective isolation capabilities. This combination effectively prevents bacterial penetration and safeguards against pathogens entering the bloodstream.
SMS nonwoven products can effectively prevent cross-infection between medical staff and patients and protect the health of healthcare workers. In terms of price and barrier performance, SMS offers numerous advantages over spunlace medical materials. In recent years, more modular composite material technologies have been developed—such as SMMS and SSMMS—creating multilayer composite materials that enhance both production efficiency and product quality.
For spunbond/meltblown nonwoven composite materials, the surface layer (spunbond layer) determines the hand feel, while the inner layer (meltblown layer) enhances barrier properties and filtration performance, thereby improving the overall performance of the spunbond/meltblown combination. The comfort, softness, and high barrier properties of blow-molded composite nonwovens are the core strengths, further boosting the core competitiveness of China’s medical nonwoven fabric manufacturing industry.
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John Han
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