Spun laying
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Flash Spinning
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Melt blown
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1. First the polymers are melted in spun laying process.
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1. First the polymer is dissolved in a solvent in flash spinning method.
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1. First the polymers are melted in melt blown process.
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2. The polymers are extruded out through a spinneret
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2. The polymer is extruded in the form of a sheet
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2. The polymer is extruded out though a relatively large hole compared
to holes in spinneret
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3. The polymer is cooled by air and then drawn out and laid in the form
of web.
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3. The polymer sheet is first drawn and then by mechanical fibrillation
is made into a fibre network and thus web forms.
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3. The polymer is first subjected to hot air which makes it expand. Then
it is cooled by cold air and laid in the form of web.
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4. Polyester and polypropylene are most commonly used.
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4. Polyethylene and polypropylene is used.
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4. Polyester and polypropylene are most commonly used.
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Production Equipment For Polymer Extrusion