The paper corner protector is made of three kinds of raw materials: bobbin paper, kraft paper and white latex, which are pressed by the machine corner protector. It is green, environmentally friendly, less pollution, low cost, easy to recycle and has a wide range of uses.

纸张角部常见质量问题：层次、空边、压裂。

Common quality problems in paper corners: layer, empty edge and fracturing.

一般情况下，纸面上的角部会出现分层，这是由于辊筒压力不足造成的；而空边则是因为牛皮纸在进入轮辊筒之前没有用纱管纸包住，白乳胶未涂平均也是原因之一。如果纸护角处出现压破质量问题，通常是胶量过大或压轮压力过大，此时需要调整。

Generally, delamination occurs at the corners of the paper, which is caused by insufficient roller pressure; The empty edge is because kraft paper is not wrapped with bobbin paper before entering the wheel roller, and the average uncoated white latex is also one of the reasons. If there is a crushing quality problem at the corner of the paper guard, it is usually too much glue or too much pressure on the pressure roller, which needs to be adjusted at this time.

涂抹白乳胶一般有两种方法，喷胶或刮胶；两者各有利弊。后者适合高品质的纸张，能平均喷涂，节约成本，如果纸张质量不好就不能使用。多数选择后者，可将纸张完全浸入胶池中；但这种方法的缺点是：一是很费胶，二是商品干燥速度慢。在刮胶的时候尽量选择乳胶管会比较好，不使用硅胶管，刮胶的作用要比乳胶管稍差一点。

There are generally two methods to apply white latex, spraying or scraping; Both have advantages and disadvantages. The latter is suitable for high-quality paper, which can be sprayed evenly and save cost. If the paper quality is not good, it can not be used. Most choose the latter, and the paper can be completely immersed in the glue pool; But the disadvantages of this method are: first, it costs a lot of glue, and second, the drying speed of goods is slow. It is better to choose latex tube when scraping glue. Silicone tube is not recommended. The effect of scraping glue is slightly worse than that of latex tube.

随着包装行业竞争的日益激烈，所以在市场上出售的纸护角出现了以次充好、偷工减料的情况并不罕见，因此顾客购买时一定要分辨好质量的好坏，对于那些有质量问题的纸护角，再的也不要购买！

With the increasingly fierce competition in the packaging industry, it is not uncommon for paper corner guards sold in the market to be shoddy and shoddy. Therefore, customers must distinguish good quality when buying. For those paper corner guards with quality problems, don't buy them at a lower price!