Provided is a Low-E glass plate protection method capable of preventing or inhibiting Low-E layer alteration. In the protection method, a protective sheet having a substrate and a PSA layer provided to at least one face of the substrate is applied for protection via the PSA layer to a Low-E glass plate having a Low-E layer that comprises a zinc component. The method is characterized by using the protective sheet wherein the PSA layer is formed from a water-dispersed PSA composition and includes less than 850 µg ammonia per gram of PSA layer weight.
本发明提供了一种能够防止或抑制 Low-E 层改变的 Low-E
玻璃板保护方法。在该保护方法中,将具有基板和在基板的至少一个面上设置的 P
SA 层的保护片通过 P
SA 层应用于具有包含
锌成分的 Low-E 层的 Low-E
玻璃板,以进行保护。该方法的特点是使用的保护片中的 P
SA 层是由
水分散 P
SA 组合物形成的,并且每克 P
SA 层重量中的
氨含量小于 850 微克。