As outlined by Textile Learner in their article “Melt Blown Non-Woven Technology – An Overview,” melt blown technology has experienced significant growth over the past two decades. Initially developed in 1951 by the US Naval Research Laboratories, this technology was designed to produce microfibers for filters aimed at collecting radioactive particles. Since then, it has evolved into a crucial process with numerous industrial applications.

The melt blown process involves the use of high-velocity air to blow molten thermoplastic resin from an extruder onto a conveyor, forming a fine, self-bonding fibrous web. This process produces fibers ranging from as small as 0.1 µm to as large as 15 µm in diameter. Key elements of the process include the extruder, metering pump, and die assembly, all working together to ensure consistent fiber production.

One of the standout features of melt blown technology is its ability to produce non-woven fabrics with unique structure-property relationships. The die assembly, for example, plays a critical role in determining the uniformity of the web. The polymer melt is extruded through hundreds of small orifices, forming filaments that are then subjected to hot air. This controlled process ensures the creation of a uniform, high-quality product.

The melt blown process can be categorized into two types: direct and indirect. Direct processes involve the combination of hot air and polymer melt directly applied to the product, while indirect processes utilize heat exchangers to transfer heat without direct contact. Both methods are used across industries, with applications ranging from filtration to medical textiles.

Given its wide range of applications and adaptability, melt blown non-woven technology continues to be a vital component in industries requiring high-performance materials.

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Article with all rights reserved, courtesy of textilelearner.net.