During the polyurethane foaming process, the foam has shrinkage, crispness, too soft, heartburn, cracking, smoke and other problems. How to analyze the causes.During the polyurethane foaming process, affected by the construction conditions, foaming equipment, construction technology and ambient temp

At present, the total global output of polyurethane has exceeded 10 million tons per year, with an average annual growth rate of 4.4% in production capacity and an average annual growth rate of 3.4% in consumption. As the largest production base and consumer market in the polyurethane industry in As