Sheet folding machine pocket - has flexible wall sliding clear for access to inside when resetting

The pocket is enclosed on all sides by a noise-absorbent cladding leaving the entrance free. The cladding comprises side walls (4, 11) fixed to or hinging on the machine frame (1), with guides for flexible sliding walls (5, 6 12) extending round the top and bottom of the pocket. The latter can be slid clear when desired to allow access to the inside of the pocket when resetting to suit different sheet sizes etc., and they can be coated with foam material. They can be wound onto rollers (7, 8, 13) to get them out of the way. The flexible sliding walls are attached to easily pushed open discharge means.