Recycling facility for non-wovens

Abstract

Recycling facility for non-wovens, comprising a fraying roller (8), a flat carding machine (9) without workers mounted downstream of the fraying device (8) in the direction of travel of the non-wovens in the facility.

Claims

1. A facility for manufacturing non-wovens comprising: a device for opening and mixing fibres to obtain opened and mixed fibres, a primary carding machine with workers for carding the opened and mixed fibres into a carded web, a consolidation device by water jets to consolidate the carded web into a consolidated web, a dryer for drying the consolidated web into a dried web, a rewinder for rewinding the dried web into a rewound web, a cutting device for cutting selvedges from the rewound web, a fraying device for fraying the selvedges frayed selvedges, a secondary carding machine without workers for carding the frayed selvedges into carded selvedges which are recycled to the device for opening and mixing fibres.

2. The facility according to claim 1, comprising a sizing device mounted upstream of the fraying device.

3. The facility according to claim 1, characterised by a cutting device downstream of the rewinder, the non-woven cutting waste from the cutting device being sent to the fraying device.

4. The facility according to claim 3, characterised in that the non-woven cutting waste is sent to the fraying device passing first through a sizing device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the attached drawings, given purely as examples:

(2) FIG. 1 is a flow diagram of a recycling facility according to the invention and of the associated non-wovens production line;

(3) FIG. 2 is an elevation view of a fraying roller with workers;

(4) FIG. 3 shows part of the roller fitted with metal workers;

(5) FIG. 4 is a cross-sectional view of a metal worker on the fraying device;

(6) FIG. 5 is a cross-sectional view of a flat carding machine.

DETAILED DESCRIPTION OF THE INVENTION

(7) The non-wovens production line shown in FIG. 1 includes a device 1 for opening and mixing fibres that sends the opened and mixed fibres to a carding machine 2 of a type other than a flat carding machine, in particular to a carding machine with workers. The carded web leaving carding machine 2 is consolidated in a device 3 for consolidation by water jets into a wet web which is sent to a drier 4. The dried web goes to a rewinder 5, if applicable, before being unwound, then cut and rewound at 6.

(8) The lint from the rewinder 5 and the cutting device 6 is sent to a sizing device 7, then to a fraying roller with workers 8, the frayed fibres leaving the fraying device 8 are carded in a flat carding machine 9. After intermediate storage 10 the carded web may be sent to the opening and mixing device 1.

(9) The fraying device is shown in elevation in FIG. 2. It consists of a feed roller 11 that advances the consolidated non-woven web continuously on a table 12. A rotating roller 13 fitted with metal workers 14 shreds and frays the non-woven web when it passes over the lip of the table 12 in the space between the table 12 and the rotating roller 13. The rotating roller 13 of the fraying device is fitted with workers (FIG. 3). A worker is shown in FIG. 4. It has a height h of 15 mm and a base diameter of 3.5 mm and is made from steel, preferably stainless steel. The distance between centres of the workers is 10 mm.

(10) A flat carding machine is shown in elevation in FIG. 5. It consists mainly of a rotating drum 15. Part of the drum is enclosed by caps 16 connected in an endless chain 17. The fibres are worked between the caps 16 and the drum 15, while the caps move slowly in the direction opposite to the movement of the fibres over the drum 15. A device 18 is provided for cleaning the caps 16 on their return passage to the drum 15. A doffing roller 19 detaches the carded fibres from the drum 15.