When bonding a shoe and lining assembly, it is important to ensure the proper adhesive cure by heating the bond to the correct combination of temperature and time. These readings are shown on the “Bonding Temperature vs. Time” chart for each particular adhesive. Due to the many variables in shoe linings, weight, size and configurations, it is best not to use the overall oven temperature as an accurate measure of the temperature at the adhesive bonding line. This bond line temperature is best determined in a separate test using a thermocouple inserted into the lining next to the shoe. The temperature is measured in that manner at regular intervals of one minute and the results are plotted to ensure the desired results.
The BZ800 and the BZ900 are precision instruments designed for this form of testing. They are both thermocouple activated temperature indicators requiring no special calibration, and both provide an accurate reading of the bond line temperature. The BZ800 thermocouple sensor provides a signal which is converted into a continuous digital read-out. The operator then records that read-out for a manually printed record of the bond line temperature during the test.
The BZ900 provides an automatic and permanent record of the bond line temperature. The thermocouple sensor sends a signal which is converted into a digital read-out, and this value is continuously printed on a paper roll for the owner’s use. The printing command can be initiated manually, automatically at a variety of time intervals, or by remote control.
Both the BZ800 and the BZ900 are supplied in a 120 volt 50/60 Hz version. They are also both available in 220 volts on special request. The plug-in lead wire feature allows for quick and easy thermocouple change-over.