| http://www.w3.org/ns/prov#value | - These factors limit the shelflife of the product and also the period of use of the product since the container cannot be erlectively resealed once it has been opened. v-Vhile the disadvantages of conventional sealing closures have long been known, other types of seals have not been developed because the cost of a precision titted seal having an eiective sealing design has been too great for use in
|
