Abstract: Apparatus for forming a fibre mat including a fibre web-forming device (card), a cross-lapper and a device for drafting the fibre web(s) disposed between the web forming device and cross-lapper to draft the fibre web(s), in particular in a time-varying, specifically periodic manner, to adjust a predetermined desired profile of the fibre mat leaving the cross-lapper, the web-forming device including at least one output belt for at least one web, and preferably two output belts for two webs, an upper and lower web respectively; wherein the cross-lapper has an input belt receiving the web(s) from the output belt(s) of the web forming device, characterised in that the path of the at least one web, and preferably of the two, upper and lower, webs, between the output belt(s) of the web-forming device, in particular the card, and the input belt of the cross-lapper includes at least one bending point.

Abstract: Apparatus for forming a fibre mat, in particular a non-woven mat, comprising a fibre web-forming device, for example a card, a cross-tapper and a device for drafting the fibre web(s) disposed between the web forming device and the cross-lapper in order to draft the fibre web(s), in particular in a time-varying, specifically periodic manner, to thereby adjust a predetermined desired profile of the fibre mat leaving the cross-lapper, the web-forming device comprising at least one output belt (1, 2) for at least one web (5, 6), and preferably two output belts (1, 2) for two webs (5, 6), an upper and lower web respectively; wherein the cross-hipper has an input belt (7) for receiving the web(s) from the output belt(s) of the web forming device, characterised in that the arrangement is such that the path of the web, or of the at least one web, and preferably of the two, upper and lower, webs, between the output belt(s) of the web-forming device, in particular the card, and the input belt of the cross-lapper includ

Abstract: A machine for forming an annular textile preform includes: a horizontal sheet-forming turntable for forming a helical fiber; a horizontal intermediate turntable positioned under the sheet-forming turntable; a horizontal intermediate unwinder positioned on the intermediate; a final horizontal unwinder positioned under the intermediate unwinder; and a horizontal preform-forming turntable positioned under the final unwinder.

Abstract: A machine for forming an annular textile preform includes: a horizontal sheet-forming turntable for forming a helical fiber; a horizontal intermediate turntable positioned under the sheet-forming turntable; a horizontal intermediate unwinder positioned on the intermediate; a final horizontal unwinder positioned under the intermediate unwinder; and a horizontal preform-forming turntable positioned under the final unwinder.

Abstract: A method of forming an annular textile preform by needling a helical fiber sheet includes in succession: unwinding a helical fiber sheet from a horizontal sheet-forming turntable driven at a constant and predefined speed of rotation NFS onto a horizontal intermediate unwinder driven at a speed of rotation NDI and positioned on a horizontal intermediate turntable driven at a speed of rotation NFI, unwinding the helical fiber sheet from the intermediate unwinder onto a final horizontal unwinder driven at a speed of rotation NDF, and unwinding the fiber sheet from the final unwinder onto a horizontal preform-forming turntable driven at a variable and predefined speed of rotation NFP so as to be subjected to needling thereon. The speeds NDI, NFI, and NDF are controlled in such a manner that NDF is proportional to NFP, NFI=(NFS?NDF)/2, and NDI=(NFS+NDF)/2.

Abstract: Apparatus for forming a fibre mat, in particular a non-woven mat, comprising a fibre web-forming device, for example a card, a cross-lapper and a device for drafting the fibre web(s) disposed between the web forming device and the cross-lapper in order to draft the fibre web(s), in particular in a time-varying, specifically periodic manner, to thereby adjust a predetermined desired profile of the fibre mat leaving the cross-lapper. The web-forming device provides at least one output belt for at least one web, and preferably two output belts for two webs, an upper and lower web respectively; wherein the cross-lapper has an input belt for receiving the web(s) from the output belt(s) and the arrangement is such that the path of the web between the output belt(s) of the web-forming device, in particular the card, and the input belt of the cross-lapper includes at least one bending point.

Abstract: The invention provides a method of forming an annular textile preform by needling a helical fiber sheet, the method comprising in succession: unwinding a helical fiber sheet (8) from a horizontal sheet-forming turntable (6) driven at a constant and predefined speed of rotation NFS onto a horizontal intermediate unwinder (24) driven at a speed of rotation NDI and positioned on a horizontal intermediate turntable (22) driven at a speed of rotation NFI, unwinding the helical fiber sheet from the intermediate unwinder onto a final horizontal unwinder (12) driven at a speed of rotation NDF, and unwinding the fiber sheet from the final unwinder onto a horizontal preform-forming turntable (18) driven at a variable and predefined speed of rotation NFP so as to be subjected to needling thereon, the speeds NDI, NFI, and NDF being controlled in such a manner that NDF is proportional to NFP, NFI=(NFS?NDF)/2, and NDI=(NFS+NDF)/2.

Abstract: An installation for consolidating a batt of fibers, for example a nonwoven web, includes a mechanical consolidation workstation using needlepunching from which the fiber batt emerges in a machine or MD direction. A device is provided downstream of the consolidation workstation for stretching in the cross or CD direction which is transverse, in particular perpendicular, to the machine direction, and parallel to the plane of the batt, particularly before it is wound onto a reel. A consolidated nonwoven that can be obtained by the installation is also provided.

Abstract: An installation for consolidating a batt of fibers, for example a nonwoven web, includes a mechanical consolidation workstation using needlepunching from which the fiber batt emerges in a machine or MD direction. A device is provided downstream of the consolidation workstation for stretching in the cross or CD direction which is transverse, in particular perpendicular, to the machine direction, and parallel to the plane of the batt, particularly before it is wound onto a reel. A consolidated nonwoven that can be obtained by the installation is also provided.