I don't know if my friends have noticed that there are always many letters on the surface of the cartons we see in our daily life. What do these letters mean? The manufacturer of corrugated cartons tells you.

　　工廠生產的紙材有不同的等級，主要以字母表示，包括K, A, B, c。在河北省紙箱廠家生產的紙箱中，B = B更為常見。紙箱有特殊要求的標志是A = A, K = K是更嚴格條件下使用的紙箱。所以，K=K表示這種紙箱是由K紙材料加工而成，=表示紙材料厚度為6mm， -表示紙材料厚度為3mm。

　　There are different grades of paper produced in the factory, mainly in letters, including K, a, B, C. Among the cartons produced by Hebei carton manufacturers, B = B is more common. The special requirement mark of the carton is a = a, and K = k is the carton used under more strict conditions. Therefore, k = k means that this kind of carton is made of K paper material, = means that the thickness of paper material is 6mm, - means that the thickness of paper material is 3mm.

　　當然，河北紙盒廠家生產的紙盒不只是K = K, A = A這么簡單，還有A = B這種紙盒，它說將紙盒表面的紙是一種紙材料，層紙是B紙材料。在A類紙類材料和B類紙類材料的各種分類中，廠家以斷裂強度來表示。要知道，A=B紙箱比B=C紙箱的材料更好，這是五層雙孔紙，K3K是三層單孔紙。

　　Of course, the paper box produced by Hebei paper box manufacturer is not only k = k, a = a, but also a = B. It says that the paper on the surface of the paper box is a paper material, and the layer paper is B paper material. In various classifications of class a paper materials and class B paper materials, the manufacturer uses the fracture strength to express. You know, a = B cartons are better than B = C cartons. This is five layers of double hole paper, and k3k is three layers of single hole paper.

　　以上是瓦楞紙箱廠家為大家介紹的相關內容，想要了解更多內容，歡迎訪問網站：http://www.hzlyfs.cnThe above is the relevant content introduced by the corrugated box manufacturer for you. To learn more, please visit the website: http://www.hzlyfs.cn