Apparatus and process for the production of a non-woven fabric
AssigneeFare S.R.L.
InventorRosaldo Fare'
Life of this patent
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Abstract
In an apparatus for the production of a non-woven fabric of filaments, where a plurality of filaments are extruded, cooled, stretched and collected on a mobile support, the means of collecting the filaments include furthermore, a gas permeable mobile support element (28), an aspirator (29) and one or more aspiration ducts (33C-36C), the collecting means being insulated from the environment air.
Claims19
An apparatus for the production of a non-woven fabric of filaments, comprising a spinneret (2) to extrude a plurality of filaments, a cooling chamber (3) to cool said filaments, a stretching duct (7) located below the cooling chamber to stretch said filaments and a means for collecting the stretched filaments and forming a non-woven fabric, wherein said means for collecting comprises a gas permeable mobile support element (28), at least one aspirator (29) and a plurality of aspiration ducts (33C-36C), to define a plurality of aspiration areas (33-36) on the said mobile support element (28), characterized in that said collecting means is provided with insulation means to avoid inflow of ambient air with a deposition area (33, 34, 38) on said mobile support element (28).
A process for the production of a non-woven fabric of filaments, comprising the phases of
- extruding a plurality of filaments from a spinneret (2),
- cooling said filaments in a cooling chamber (3),
- stretching said filaments in a stretching duct (7) located below the cooling chamber,
- depositing the stretched filaments on a gas permeable mobile support element (28) in a deposition area (33, 34, 38) to form a layer of filaments while drawing air through the same mobile support element in correspondence of a plurality of aspiration areas (33-36) defined by corresponding aspiration ducts (33C-36C), characterized by
- preventing ambient air from entering said deposition area (33, 34, 38).
Dependencies are inferred from the claim text.