Before conducting the vehicle-level evaluation, the contact load distance and compression set were measured, which are component level tests. The compression set was measured under the condition of 80 ℃ and 45 h of soaking. As shown in Figure (5), additional tests were performed under typical manufacturing deviation (δma = 1.87) conditions (glass positions are nominal and nominal + 2 mm). This is because the contact of the glass must be maintained even in the deviation state where the manufacturing quality deteriorates, and there is no incomplete closure of the glass owing to a sudden increase in the contact load.
In Table 11, the test results were found to satisfy the specification, in particular, it had a load of 0.96 N/100 mm or more even after the compression set; it was possible to obtain a result where contact with the glass was maintained even with manufacturing deviation. This can be attributed to the increase in the initial contact load owing to the decrease in the compression set of the material and increase in the initial overlap.