Round Corner Case is more and more popular in the hardcover book, note book, menu, and diary, etc..
ST is the first inventor for the round corner case making in China, and ST’s round corner case making technology hase been obtained national invention patents since 2011.
In these years, ST keep improving the round corner case making technology, until now, it has been the 5th generation round corner case making technology from ST.
The advantages of the generation round corner case making technology including:
More materials for choosing, the cover materials can be PU, PP, special paper, leather, kraft paper, lamination paper, flannel, etc., the boad materials can be grey board with sponge, with corrugated cardboard, MDF board, etc.