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咖啡豆包装袋的排气装置
- 专利权人:
- 张育诚
- 发明人:
- 张育诚
- 申请号:
- CN01219300.3
- 公开号:
- CN2485241Y
- 申请日:
- 2001.04.10
- 申请国别(地区):
- 中国
- 年份:
- 2002
- 代理人:
- 朱黎光`张占榜
- 摘要:
- 一种咖啡豆包装袋的排气装置,由排气装置及一护环组成;其中排气装置为W形体具有气嘴,气嘴顶端处设有半球体,由其头中心割一切口至底,该底呈凹形连接气嘴,W形体边缘呈较薄的凸缘片;通过本实用新型,当内装的咖啡豆积蓄足压的气体向袋外撑顶时,气体会冲顶凹形的切口成开口让气体由此泄出袋外,当袋内气压小于大气压力时,半球体的切口因挠性恢复而封闭,加上半球体四周的压力将切口压紧,气嘴的颈部为压力所扼住,能达到阻绝空气进入袋内的目的。
- 来源网站:
- 中国工程科技知识中心
- 来源网址:
- http://www.ckcest.cn/home/
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