**5.3 Bonding strength vs. environmental condition 1 vs. loading**

Testing has been done to measure the bonding strength, failure mode per different loading after a high temperature environmental condition (70°C for 1 week), and a high humidity condition (50°C/95%RH for 1 week). As shown in **Table 5**, polyurethane hot melt adhesive solution has no de-bonding when the weight loading of 25, 50, and 100 kg was placed on top of glass part; then, 3 times of 100 kg impact was applied to the glass part and the bond line remained intact between glass and mating substrates but the glass in the diddle was shattered instead. **Figures 23** and **24** explain the intact bond line area of both chrome-plated + glass and ABS + glass bonding.
