发明名称 |
Container having tapered sidewall made from sheet material and lid to seal same |
摘要 |
A package is provided with a lid and container that are heat sealed together. A multi-ply sheet material is provided for being thermoformed to define the container which has a tapering wall and bulge-resistant bottom end. Prior to thermoforming the container from the sheet, the sheet is heated with oval pads on a plurality of plates which are arranged in a configuration to facilitate control of the sheet temperature. A plug is used in the thermoforming process to contact the sheet and position the sheet within a die. A lid sheet is heat sealed to the container sheet over the thermoformed containers so as to produce a pair of spaced-apart, annular bead heat seals. The package is completed by severing the sealed-together sheets at the periphery of the container with a punch and die set that produces and clean, smooth cut surface.
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申请公布号 |
US6286705(B1) |
申请公布日期 |
2001.09.11 |
申请号 |
US19970810722 |
申请日期 |
1997.03.03 |
申请人 |
ABBOTT LABORATORIES |
发明人 |
MIHALOV LORI J.;SITA LEWIS H.;STEVENS TODD A.;ULSTAD DAVID C.;ZEITLER W. GEORGE |
分类号 |
B29C65/18;B29C65/74;B65B7/16;B65B61/06;B65D8/18;B65D17/40;B65D51/20;B65D77/20;(IPC1-7):B65D41/00 |
主分类号 |
B29C65/18 |
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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