METHOD FOR MANUFACTURING ANTISLIP SOLE AND SHOE HAVING SOLE MANUFACTURED BY THE METHOD

• Main Authors: HORIE NAOJI, KAMEYAMA NORIHISA
• Format: Patent
• Language: English
• Published: 09.12.2004
• Edition: 7
• Subjects: CHARACTERISTIC FEATURES OF FOOTWEAR; FOOTWEAR; HUMAN NECESSITIES; MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING ORREPAIRING FOOTWEAR; PARTS OF FOOTWEAR; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a sole integrally formed with a sole body and projections by a mold, which is easily formed by the mold even with an enlarged undercut of the projection for improving antislip performance. SOLUTION: When the projections 3t each having an undercut and the sole body 3a are integrally formed by the mold, a movable element 11 allowed to be raised by a predetermined stroke is inserted in the mold 10, recessed parts 12 for forming the projections are provided across a border surface x between the mold 10 and the movable element 11 to divide the recessed part 12 by the border surface x. After the sole body 3a and the projections 3t are integrally molded by filling a space for forming the sole with a sole material, the movable element 11 is dragged and raised with the sole 3 to demold the sole by expanding an area of an opening of the recessed part. The recessed parts 12 may be provided only on the side of the movable element 11 so as to expand the area of the opening of the recessed part 12 when the movable element 11 is raised. COPYRIGHT: (C)2005,JPO&NCIPI