发明名称 Apparatus for cutting hand holes in bags
摘要 An apparatus for forming aligned front and rear hand holes in the front and rear panels of a bag according to the invention has a support having a front face and an oppositely directed rear face adapted to respectively support the front and rear panels of the bag and formed with respective aligned front and rear annular recesses of a shape corresponding to that of the hand holes to be cut. Respective annular front and rear outer holddowns are engageable with the respective faces for pressing the respective panels thereagainst around the respective recesses. An annularly continuous front cutter blade is engageable in the front recess and an annular but discontinuous rear cutter blade is engageable in the rear recess. A rear inner holddown is also engageable with the rear face within the recess. An actuator can press the holddowns against the respective faces and simultaneously press the blades into the respective recesses and thereby cut a piece from the front panel and form an annular but discontinuous cut in the rear panel.
申请公布号 US4631047(A) 申请公布日期 1986.12.23
申请号 US19850808890 申请日期 1985.12.13
申请人 LEMO M LEHMACHER & SOHN GMBH MASCHINENFABRIK 发明人 DRECKMANN, KARL;MIESEN, THEO
分类号 B26F1/38;B26F1/40;B31B19/86;(IPC1-7):B31B1/20;B26F1/44 主分类号 B26F1/38
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