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B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
B31F1/0045—Bending or folding combined with joining
B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
B31F1/0051—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles of definite lentgh
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FR849112D1939-01-191939-01-19Procédé de fabrication d'articles annulaires ou tubulaires en matière souple
ExpiredFR849112A
(fr)