Single convex and concave composite paper

CN2741765
The structure of single-sided convex-convex composite paper consists of concaves and convexes on the surface of paper, core paper and core paper. A row of pits are formed on the surface of the core paper, and the pits on the surface of the core paper are convex on the back surface of the core paper. The two rows of concave and convex are arranged in an offset manner. The concave and convex surfaces of the core paper are bonded to the surface paper. The single-faced concave-convex composite paper and the prior art have the advantages of simple and reasonable design structure, uniform intensity distribution, small anti-seismic deformation, and easy processing.

Source: China Packaging News