Method and device for bonding a non-woven fibre produced by the air-lay method
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United States of America Patent
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Issued Date -
Jun 5, 2003
app pub date -
Sep 27, 2002
filing date -
Jan 18, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The conventional method for production of a multiple-layer, non-woven fibre is by means of the air-lay method, with thermal bonding using bonding fibres. The same method can be applied to a composite non-woven fibre with an intermediate pulp layer. This method of bonding does not reduce the later pilling wear and hardly influences the inner composition of the layers of the composite. According to the invention, the outer non-woven fibre is preferably made from a bicomponent fibre and treated by hydrodynamic needling for bonding, such that not just the surface is bonded, but also the layers are bonded to each other.
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