| 摘要 |
PROBLEM TO BE SOLVED: To solve problems for example, when a raw material having the most ideal physical property and characteristic is used as a raw material for an engagement pin material used for various kinds of special objects, instead of a conventional raw material, such as polyethylene and nylon, when injection molding is performed, and when it is produced as an assembly and then punched to an object using an attachment tool, in a conventional art, the raw material do not flow to corners of a cavity of a mold, and when cutting a connection part (gate) by a cutter of the attachment tool, it is too hard so that the cutter cannot be released from a runner bar. ! SOLUTION: A plastic pin material is connected to a linear runner bar via a connection part, and arranged with predetermined interval pitch, and slip-prevention parts are provided on both ends in an integrated state. The connection part (gate) is cut by a cutter of a dedicated attachment tool, and an engagement pin material is attached to an obje |
