WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

B31C　MAKING WOUND ARTICLES, e.g. WOUND TUBES (characteristics relating to the working of plastics B29)

B31C 1/00 Forming paper tubes or pipes by feeding at right angles to the winding mandrel centre line

B31C 1/02 ・Machines therefor having additional mandrels

B31C 1/04 ・and forming a tube end into a container bottom

B31C 1/06 ・and inserting into a tube end a bottom to form a container

B31C 1/08 ・Accessories of machines therefor not otherwise provided for

B31C 1/083 ・・{Winding mandrels}

B31C 1/086 ・・・{expansibles}

B31C 3/00 Forming paper tubes or pipes by feeding obliquely to the winding mandrel centre line

B31C 3/02 ・and inserting into a tube end a bottom to form a container

B31C 3/04 ・Seam processing

B31C 5/00 Forming paper tubes or pipes without mandrels

B31C 7/00 Forming conical paper articles by winding (winding blanks B31B)

B31C 7/02 ・Forming truncated cones

B31C 7/04 ・・on two or more mandrels

B31C 7/06 ・・・and inserting into a cone end a bottom to form a container

B31C 7/08 ・Forming pointed cones

B31C 7/10 ・・on two or more mandrels

B31C 9/00 Simultaneous forming of cylindrical and conical shapes by winding separate webs, e.g. forming bottles (winding blanks B31B)

B31C 11/00 Paper-winding machinery combined with other machinery

B31C 11/02 ・for additionally shaping the articles

B31C 11/04 ・for applying impregnating by coating-substances during the winding

B31C 11/06 ・for drying the wound and impregnated articles

B31C 13/00 Making wound articles not otherwise provided for