Two component melt blown technology Meltblown non woven fabric extrusion equipment
DATE：2021/2/24 9:14:38 / READ： / SOURCE：This station
Two component melt blown technology Meltblown non woven fabric extrusion equipment
Since entering the 21st century, the technology of melt blown nonwovens has developed rapidly in the world.
Hills and Nordson developed two-component meltblown technology earlier, including skin core, side-by-side, triangle and so on. Generally, the fiber size is close to 2 & micro;, and the number of holes in the meltblown wire assembly can reach 100 holes per inch, and the extrusion amount of each hole can reach 0.5g/min.
Skin core type: it can make nonwovens feel soft, and can be made into concentric, eccentric and shaped products. Generally, cheap materials are used as the core, and expensive polymers with special or required properties are used as the outer layer. For example, the core is polypropylene and the outer layer is nylon to make the fiber hygroscopic; the core is polypropylene and the outer layer is low melting point polyethylene or modified polypropylene or modified polyester for bonding. For carbon black conductive fiber, the conductive core is wrapped inside. Melt blown non-woven fabric extrusion production equipment handern.com
Juxtaposition type: it can make nonwovens have good elasticity. It is usually made of two different polymers or the same polymer with different viscosity into juxtaposition type bicomponent fiber. It can be made into spiral crimp fiber by using different heat shrinkability of different polymers. For example, 3M company has developed melt blown PET / PP bicomponent fiber nonwovens. Due to the different shrinkage, the spiral curl is formed, which makes the nonwovens have excellent elasticity.
Tip type: This is another kind of polymer compounded in trefoil type, cross type and tip type. For example, when making antistatic, moisture conducting and conductive fibers, conductive polymer can be compounded on the top, which can not only conduct moisture, but also conduct electricity and antistatic, and save the amount of conductive polymer. Melt blown non-woven fabric extrusion production equipment handern.com
Micro Dan type: can use orange petal shaped, strip stripping type components, can also be island type components. Two kinds of incompatible polymers are used to peel and split to make ultrafine fiber net, even nanofiber net. For example, the peel and split bicomponent fiber developed by Kimberly Clark is to make ultrafine fiber net by using the bicomponent fiber made of two kinds of incompatible polymers, which can be completely stripped in less than one second in hot water. For island type, the sea should be dissolved to obtain fine island fiber network.
Mixed type: it is a kind of fiber net with CO spinning and bicomponent fibers, which is composed of different materials, different colors, different fibers, different cross-section shapes, and even fibers juxtaposed with skin core, so that the fibers have all kinds of required properties. This kind of melt blown bicomponent fiber nonwovens or mixed fiber nonwovens can further improve the filterability of the filter media, and make the filter media have antistatic, conductive, hygroscopic, enhanced barrier properties, etc., or improve the adhesion, fluffy and air permeability of the fiber web. Melt blown non-woven fabric extrusion production equipment handern.com
Two component meltblown fiber can supplement the deficiency of single polymer performance. For example, polypropylene is relatively cheap, but it is not resistant to radiation when used in medical and health materials. In this way, polypropylene can be used as the core, and the problem of radiation resistance can be solved by choosing appropriate radiation resistant polymer to wrap it outside. So that the product can be cheap, but also to meet the functional requirements, such as in the medical field can be used for respiratory heat and moisture exchanger, can provide appropriate similar to natural heat and humidity. The utility model has the advantages of light weight, disposable use or convenient disinfection, low price, and the additional function of removing pollutant filter. It can be made up of two kinds of two-component melt blown fiber webs mixed evenly. The core is polypropylene and the skin is nylon. The bicomponent fiber can also adopt special-shaped cross section, such as trilobal and multilobal, to make its surface area larger. At the same time, the polymer which can improve the filtration performance can be used in the surface or tip part of the bicomponent fiber. Alkene or polyester melt blown bicomponent fiber mesh can be made into cylindrical liquid and gas filters. The melt blown two-component fiber net can also be used as cigarette filter nozzle, high-grade ink wicking core by wicking effect, wicking rod for liquid retention and infusion, etc.
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