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US 2011/0217405 A1Published application
Method and installation for producing a non-woven web with dust removal
OwnerJean-Michel Dubusinventor
Life of this patent
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Abstract
The invention relates to equipment for producing a non-woven web, comprising a device (107, 108) for driving a filament packet, using an air stream, towards a conveyor (101) and an electrostatic device (117) arranged so as to apply electrostatic forces to the filaments of the driven packet, characterised by a means (801, 804) for removing dust from the driving air stream.
Claims11
Spunbond tower successively comprising, in a downward direction:
- a die (103) providing hot filaments,
- a device (106) for cooling the hot filaments to form cooled filaments by means of air which is introduced via a cooling air inlet,
- a device (107) for drawing the cooled filaments to form drawn filaments by means of air which is introduced via a drawing air inlet and
- a forming device (108) for depositing drawn filaments in the form of a web on a conveyor belt (109), the forming device comprising two opposing air inlet apertures (115, 116) at the same level, each aperture extending over the entire transverse extent of the forming device and an electrostatic device (117) below the level of the apertures,
- characterised by
- means (803, 804) for removing dust from the air being introduced via the apertures.
3 more elements
Dependencies are inferred from the claim text.