B31F1/0061 - CPC Classification

Mechanical deformation without removing material, e.g. in combination with laminating; Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor; Bending or folding combined with joining; Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles of indefinite length

• B31F1/0064 » {using internal forming surfaces, on e.g. mandrels} 1
• B31F1/0067 » {using only external forming surfaces, e.g. sleeves} 0

Recent Application in this class: