Forming section for forming a fibrous web, a papermaking machine comprising a forming section and a method of forming a fibrous web

A method of forming a fibrous web, the method comprising the steps of:

• injecting stock in an inlet gap (6) formed between a first forming fabric (3) and a second forming fabric (5), each of the first and second forming fabric (3, 5) being configured to run in a loop supported by guide elements (4), and wherein a forming roll (7) is located in the loop of the second forming fabric (5) and the forming roll (7) is configured to guide the second forming fabric (5) into the inlet gap (6) and to guide the first and the second forming fabric (3, 5) along a part of their path which is common to both the first and the second forming fabric (3, 5) and which begins at the inlet gap (6);
• causing the forming fabrics (3, 5) to run in their loops such that the stock that is injected into the inlet gap (6) passes between the first and the second forming fabric (3, 5) as the forming fabrics (3, 5) are guided by the forming roll (7) such that water is removed from the injected stock,
• wherein the forming roll (7) comprises a flexible tubular jacket (8) configured to run in a loop around an axis of rotation (A) that extends in a direction perpendicular to the direction in which the first and second forming fabric (3, 5) are configured to run and in that the forming roll further (7) comprises a support ledge (9) located inside the loop of the flexible tubular jacket (8) and extending in a direction parallel to the axis of rotation (A) of the flexible tubular jacket (8) and which support ledge (9) is configured to be capable of pressing the flexible tubular jacket (8) in a direction outwards away from the axis of rotation (A) of the flexible tubular jacket (8) in an area along the loop in which the flexible tubular jacket (8) is configured to run such that, in the area in which the flexible tubular jacket (8) is pressed outwards by the support ledge (9), the flexible tubular jacket (8) is caused to follow a path with a radius of curvature which is smaller than the radius of curvature of the flexible tubular jacket (8) outside the area in which the support ledge (9) contacts the flexible tubular jacket (8).