As shown in FIG 4, a weakened portion 45 is preferably formed in {HEAD ~ the middle} of {TAIL ~ the internal seal} 43 to cause the seal to rupture when pressure is applied to the exterior of the second compartment 42 
of
As shown in FIG 4 , a weakened portion 45 is preferably formed in { HEAD ~ the middle } of { TAIL ~ the internal seal } 43 to cause the seal to rupture when pressure is applied to the exterior of the second compartment 42
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH