发明名称 |
Vacuum packaging apparatus and process. |
摘要 |
<p>A vacuum packaging process and apparatus employ the novel step of deliberately at least partically repressurizing the exterior of a packaging receptacle after commencement of the evacuation of the exterior and interior of the receptacle in a chamber. Two separate gas pressure restroation phases may be employed, separated by a resumption of the gas extraction, and the receptacle is closed during the second of these gas pressure restoration phases.</p> |
申请公布号 |
EP0077458(A1) |
申请公布日期 |
1983.04.27 |
申请号 |
EP19820108140 |
申请日期 |
1982.09.03 |
申请人 |
W.R. GRACE & CO. |
发明人 |
SEGOTA, PIETRO;NIELSEN, BRODER |
分类号 |
B65B31/02;(IPC1-7):65B31/02 |
主分类号 |
B65B31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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