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公开(公告)号:US3559562A
公开(公告)日:1971-02-02
申请号:US3559562D
申请日:1969-06-06
申请人: BOISE CASCADE CORP
发明人: CARLSON HERBERT E , BLACK RODRICK E
摘要: A device for preserving fresh fruit by releasing sulfur dioxide into a sealed container of the fruit. The device comprises a layer of solid coating material and a particulate compound forming a substantially uniform dispersion throughout the layer. The compound is characterized by the release of sulfur dioxide on contact with water vapor. One device is formed of a dispersion of sodium bisulfite in a layer of white scale paraffin wax containing a viscosity-increasing agent.