Cardboard box is a very common way of packaging in reality, its specifications are not limited, it can be temporarily folded according to the packaging items to determine the size, and the price is low, at the same time, it also has the environmental protection characteristics of recycling, so it is welcomed by many industries. But as a carton, fear of water and fire is an unavoidable problem. The possibility of open fire contacting the carton is very small, but water is very common. The following editor will introduce how the carton is waterproof.

纸板板在生产过程中采用暂时性防水剂处理后，具有暂时防水功能。当水短时间落于其上时，不沾湿而成水滴，能防止水浸透纸板。暂时性防水剂处理纸板工艺近十年来在我国各大纸箱厂均已应用。这种防水剂当初从日本引进，其日文字面为“拔水剂”。

The paperboard has the function of temporary waterproof after being treated with temporary waterproof agent in the production process. When the water falls on it for a short time, it will not get wet and become water drops, which can prevent the water from soaking the paperboard. In recent ten years, the technology of temporary waterproof agent treating paperboard has been applied in all major carton factories in China. This kind of waterproof agent was introduced from Japan at the beginning, and its Japanese literal is "water extracting agent".

这种涂料早期用于织物纤维上，后来才用于纸板的处理。因此大多树纸箱厂就采用拔水剂的叫法。拔水剂是一种蜡乳液，固体含量一般为：48%～51%，它的特点是在使用时可用30倍左右的水稀释，然后涂布于正在成型的纸板面上，经过150℃左右的温度干燥，纸表面纤维由于醋的包裹，而具有表面张力，

This kind of coating was used on the fabric fibers in the early stage, and then used in the treatment of paperboard. Therefore, most of the tree carton factory uses the name of water extraction agent. Water extraction agent is a wax emulsion, solid content is generally 48% to 51%, it is characterized by the use of 30 times the water can be diluted, and then coated on the forming of the cardboard surface, after 150 degrees Celsius drying temperature, paper surface fiber wrapped by vinegar, and has low surface tension.

形成对水不浸润的面层。当遇水时，水在这个纸板上不浸润，形成水滴滚落，从而达到防水的作用。但是，蜡对纸纤维的附着力并不好，特别是当拔水剂被稀释了。

Form a surface that is not wetted by water. When meeting water, water does not infiltrate on this paperboard, forming water drops to roll down, so as to achieve the function of waterproof. However, the adhesion of wax to paper fiber is not good, especially when the extractant is diluted.
              

30倍以后，其固含量较，纸表面纤维只有很薄一层被蜡包裹。另外由于蜡乳液中蜡的粒径一般都比通常的高分子乳液粒径大，要往纸纤维深处渗透也难，同时拔水剂一般对明矾一类化学品敏感，在纸表面往往很快破乳而沉淀下米，因此拔水剂中的蜡粒子绝大部分只在纸面上很薄的一层存在。

After 30 times, its solid content is low, and only a thin layer of fiber on the paper surface is wrapped by wax. In addition, because wax particles in wax emulsion are generally larger than the size of ordinary polymer emulsion, it is difficult to infiltrate into the depths of paper fibers. At the same time, the water absorbent is generally sensitive to alum chemicals, and it often breaks down quickly on the surface of paper.

在有外摩擦力的作用下，蜡容易被摩擦掉，露出无蜡包裹的纤维，防水效果大大降。为了增强蜡对纸纤维的附着力，在拔水剂中往往有松香衍生物或羧化高分子乳液，它们既对纸纤维有很好的粘附力，与蜡又有较好的相溶性。这样，它们的加入可促进蜡在纸纤维上的附着性，同时如果对蜡进行改性，如将其氧化、基化，也有类似作用，都可以使蜡对纸纤维的附着力增加。但是必须指出的是，就是增加了这些措施，拔水剂在这样的浓度下所形成的仍不是一个防水膜层，因此在遇到摩擦，

Under the action of external friction, the wax is easy to be rubbed off, exposing the fiber wrapped without wax, and the waterproof effect is greatly reduced. In order to enhance the adhesion of wax to paper fibers, there are often rosin derivatives or carboxylated polymer emulsions in the water extraction agent. They have good adhesion to paper fibers and good solubility with wax. In this way, their addition can promote the adhesion of wax on paper fiber. At the same time, if wax is modified, such as oxidation and basification, it also has a similar effect, which can increase the adhesion of wax on paper fiber. However, it must be pointed out that even with the increase of these measures, the waterproof film formed by the extractant at such concentration is still not a waterproof film, so when encountering friction,

如纸箱在搬运、堆码过程中遇摩擦，往往会使这一防水表面失去作用。这就是为什么把涂布拔水剂的这类纸箱定为暂时性防水纸箱。目前，拔水剂在一些纸箱厂已是广泛使用，并成为一道基本工序。

If cartons encounter friction in the process of handling and stacking, the waterproof surface will lose its function. This is why the coating of such cartons as temporary waterproof cartons. At present, water extractant has been widely used in some carton factories and has become a basic process.

以上就是纸板箱防水功能的介绍，需要注意的是这只是暂时性防水的手段，平常的纸箱使用中还是要注意避免雨水和潮湿的问题。如想了解更多精彩内容请点击：纸箱厂家https://www.shuangfengbaozhuang.cn 。

The above is the introduction of the waterproof function of the cardboard box. It should be noted that this is only a temporary waterproof means. In the normal use of the cardboard box, we should pay attention to avoid the problems of rain and moisture. For more information, please click: carton manufacturer https://www.shuangfengbaozhuang.cn  .