发明名称 |
Sulphur dioxide generators |
摘要 |
A sulphur dioxide generator (10) is disclosed which comprises two composite sheets (12, 14). First stage release of sulphur dioxide is from a coating (26) of the composite sheet (14). The coating (26) is between a paper sheet (22) and a weldable coating (24). The coating (26) incorporates a substance which, in the presence of moisture, generates sulphur dioxide. Second stage release is from sulphur dioxide generating powder which is in pockets (30). The composite sheet (12) comprises a paper layer (16) and a weldable layer (18). The layers (24, 18) are sealed together along a series of longitudinal and transverse lines to form the pockets (30).
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申请公布号 |
US2002041939(A1) |
申请公布日期 |
2002.04.11 |
申请号 |
US20010848255 |
申请日期 |
2001.05.04 |
申请人 |
CLEMES DENNIS CHARLES;VAN DER WESTHUYZEN PETRUS JOHANNES;VAN DER MERWE PIETER JOHANNES |
发明人 |
CLEMES DENNIS CHARLES;VAN DER WESTHUYZEN PETRUS JOHANNES;VAN DER MERWE PIETER JOHANNES |
分类号 |
A23B7/152;B65D81/28;(IPC1-7):B32B1/02 |
主分类号 |
A23B7/152 |
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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