Squeeze package

Details Squeeze package Squeeze package

B - Operations, Transporting

65

D

222/88

B65D 37/00 (2006.01)

Patent

CA 1240960

Abstract of the Disclosure Disclosed is a squeeze package comprising a flexible plastic hollow vessel and a viscous content packad in the vessel, wherein the hollow vessel comprises a flexible cylindrical barrel, a narrowed orifice passage connected to the barrel through a shoulder and a residence portion connected to the orifice passage through a stepped portion and having a squeeze opening on the top end thereof, the content has a viscosity of 1,000 to 250,000 cP, and the dimension of the vessel and the viscosity of the content are within the range satisfying the require- ments represented by the following formulae: log ? ? -log ? - log S1/S0 + 5.45, log ? ? 0.588 log S0 + 0.764 log E + 2.30, and S1/S0?2 wherein ? stands for the viscosity (cP) of the content, S0 stands for the sectional area (mm2) of the orifice passage, S1 stands for the sectional area (mm2) of the residence portion, ? stands for the length of the residence portion in the axial direc- tion and E stands for the elastic recovery (g) of the cylindrical barrel in the non-packed state. This package has an excellent squeeze characteristic and occurrence of the air-back phenomenon is prevented in this package.

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