Why does the synthetic athletic track and sports flooring produce bubbles after construction? In the construction process of polyurethane materials , each construction process needs to be proportioned and constructed according to the manufacturer's requirements. Once it deviates from the manufacturer's construction process, it is likely to cause many problems in the whole site. For example, the PU tartan track and the silicon PU sports field blistered after application . The reasons are as follows: 1. High air humidity during construction During the construction period, due to the rush period, the dew was not dry in the morning, the construction was carried out under the condition of high air humidity in the southern rainy season, and the construction time was not well controlled, resulting in high water content in the construction conditions at that time. Generally, there was no problem on the day of construction, and the next day After sun exposur...