| 发明名称 |
Machine and method for manufacturing square or flat bottom bags having movable positions or stations including the use of a mandrel |
| 摘要 |
A method and apparatus for the rapid and continuous formation of reinforced flat bottom bags from a substantially endless roll of gussetted tubing.
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| 申请公布号 |
US4230030(A) |
申请公布日期 |
1980.10.28 |
| 申请号 |
US19780933085 |
申请日期 |
1978.08.11 |
| 申请人 |
HANSON, VIOLET M. |
发明人 |
HANSON, VIOLET M.;STRECKER, EDGAR |
| 分类号 |
B31B3/00;(IPC1-7):B31B33/14 |
主分类号 |
B31B3/00 |
| 代理机构 |
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