Abstract: A laminate structure for forming a barrier member of a container, the laminate structure includes a base layer, a barrier film layer, a first functional polymer layer, and a second functional polymer layer configured to at least partially seal the laminate structure to a container wall of the container, the first functional polymer layer reactive to the application of radiofrequency energy for promoting joining the second functional polymer layer to the container wall of the container. Also disclosed is a sealing assembly for joining a barrier member to a container.

Abstract: An amplifier system includes an operational amplifier having a reference applied to one input terminal. A voltage above or below the reference voltage is applied to the other input terminal by way of an interface circuit. The interface circuit adapts the input for use with a switch or, alternatively, the interface may be disabled to permit use of a variable resistor input such as a thermistor. The output of the operational amplifier may be a switching circuit. The amplifier system is adapted for use in a fluid level system to permit the alternate use of a switch type or thermistor level sensor.