Patent ID: 7767133

Claim:
A method for producing a stretchable removable workpiece, the workpiece having predetermined areas of equal or different thicknesses and having an inner surface and an outer surface with loose fibers adhering thereto, the method comprising: (1) providing a workpiece former having a surface; (2) applying a wetting agent onto at least a portion of the surface of the workpiece former so as to form a wetted surface on the workpiece former; (3) spraying loose fibres onto at least a portion of the wetted surface on the workpiece former, wherein the loose fibres temporarily adheres to the wetted surface to form a fibre coated surface; (4) spraying liquid product material onto at least a portion of the fibre coated surface of the workpiece former in a controlled manner so as to form a stretchable removable workpiece having predetermined areas of equal or different thicknesses and having an inner surface and an outer surface, wherein at least a portion of the inner surface of the workpiece has the loose fibres adhering thereto and wherein said spraying of liquid product material is controlled by adjusting the: (a) relative position of the sprayer and the surface of the workpiece former; (b) spray fan pattern; (c) amount of sprayed material delivered per unit time; (d) timing or duration of the spraying; or (e) material atomization; and (5) spraying loose fibres onto at least a portion of the outer surface of the workpiece, wherein the loose fibres adhere to the outer surface of the workpiece.