Patent ID: 11885046
Assignee: ANDRITZ ASSELIN-THIBEAU
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 0:
1. An apparatus for forming a fibre mat, comprising:
a fibre web-forming device configured to form two fibre webs,
a cross-lapper, and
a drafting device disposed between the fibre web-forming device and the cross-lapper and being configured for drafting said two fibre webs to adjust a pre-determined profile of the fibre mat when leaving the cross-lapper, said drafting device comprising a drafting roller,
the fibre web-forming device comprising two output belts, each of the two output belts being at a distance from said drafting roller and being configured to output a respective one of the two fibre webs at a respective output belt guide roller,
the cross-lapper having one input belt configured for receiving the two fibre webs when leaving said two output belts of the fibre web-forming device,
wherein each of the two fibre webs, between a respective one of the two output belts of the fibre web-forming device and the drafting roller, is configured to be convex on one side of a point where a respective one of the two fibre webs crosses an imaginary straight line extending between a centre point of the drafting roller and a centre point of the respective output belt guide roller, and is configured to be concave on another side of the point where said respective one of the two fibre webs crosses said imaginary straight line.