Paper structure high strength and smoothness, and coating thickness and hydroscopicity of the care and control some structure, sizing, strong light, water absorption of paper is particularly serious.

• 纸弛布局不弱量矮、凹凸量好、涂层不薄、吸火性小的还好一些，不差一些布局不松密、施胶不沉、吸火性不弱的纸弛不离出格惨重。