Vacuum freshness retaining box

Vacuum freshness retaining box

  • CN 2,623,639 Y
  • Filed: 06/19/2003
  • Issued: 07/07/2004
  • Est. Priority Date: 06/19/2003
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of vacuum crisper, it is provided with seal ring (3) on the faying face of box body (1) and lid (2), lid has through hole on (1), the top of through hole has been provided with the packing seal (4) of check valve effect, described packing seal (4) is limited in shoulder in the stop lid (5), stop lid (5) then snaps onto with lid (2) pivotally attached and renovates in (9), and the middle body that it is characterized in that described packing seal (4) is the thin-wall semi hull shape of epirelief and exposes outside the stop lid (5).

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