Valve for vented package
Multiwall pouch bag with vent strip
ApplicationNo. 852537 filed on 05/07/1997
US Classes:383/101, Fluid circulates between bag plies383/103, Opening in bag material426/118Packaging structure cooperating with food generated gas
ExaminersPrimary: Garbe, Stephen P.
Attorney, Agent or Firm
Foreign Patent References
International ClassB65D 033/01
Foreign Application Priority Data1993-12-28 JP
AbstractA wrapping device having a laminate film is disclosed. The laminate film includes at least a pair of outer layer and inner layer comprising synthetic resin layers non-heat-fusible relative to each other, a bonded portion through which the outer layer and the inner layer are bonded to each other by bonding means and a non-bonded portion where the outer layer and the inner layer are separated from each other. A communicating passage is formed at the non-bonded portion by the inner and outer layers. A communicating construction is provided to the inner layer at the non-bonded portion, the construction allowing communication between space facing the inner layer and the communicating passage.