Meltblown Web Collection and Bonding
topic
Meltblown web collection uses a perforated drum or flat belt collector with vacuum suction maintaining the fine fibre web in position against air turbulence from the high-velocity process air, with collector distance from the die tip controlling the degree of fibre entanglement and thermal bonding occurring before collection that determines web cohesion and the balance between filtration porosity and mechanical integrity in the collected meltblown web.
Role
Controls the degree of self-bonding and web structure formation through collector distance optimisation that determines whether meltblown fibres bond before or after collection, with shorter collector distances producing denser, stronger webs through more thermal bonding while longer distances produce softer, more open structures with higher air permeability, with collector geometry being optimised for each application between barrier performance and pressure drop requirements.
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