这种涂料晚期用于织物纤维上，起初才用于纸板的处理。因此大多数纸箱厂就采纳拔水剂的叫法。拔水剂是一种蜡乳液，固体含量通俗爲：48%～51%，它的特点是在应用时可用30倍阁下的水稀释，然后涂布于正在成型的瓦楞纸板面上，经过150℃阁下的温度枯燥，纸表面纤维因为醋的包裹，而具备低表面张力，组成对水不浸润的面层。
At first, it was used as a coating for the fabric. Therefore, most carton factories adopt the name of water extractant. Water extraction agent is a wax emulsion, solid content is popular: 48% to 51%, its biggest feature is that when applied, it can be diluted 30 times the amount of water, and then coated on the corrugated board on the surface. After 150 degrees, the temperature is dry. The surface of the paper is wrapped with vinegar and has low surface tension to form a surface layer which does not infiltrate the water.
当遇水时，水在这个纸板上不浸润，组成水点滚落，从而到达防水的感化。然则，蜡对纸纤维的附着力并不好，特别是当拔水剂被稀释了30倍当前，其固含量只需1.5+，纸表面纤维只需很薄一层被蜡包裹。另外因为蜡乳液中蜡的粒径通俗都比通常的高分子乳液粒径大，要往纸纤维深处浸透也难，同时拔水剂通俗对明矾一类化学品敏感，在纸表面每每很快破乳而沉淀下米，因此拔水剂中的蜡粒子绝大局部只在纸面上很薄的一层存在。
When meeting water, water does not infiltrate on this paperboard, forming water points to roll down, so as to achieve the effect of waterproof. However, the adhesion of wax to paper fiber is not good, especially when the extractant is diluted by 30 times. At present, its solid content is only 1.5 +, and the paper surface fiber only needs a very thin layer of wax. In addition, the wax size of wax emulsion is larger than that of the usual polymer emulsion, and it is also difficult to soak in the depth of paper fiber. At the same time, the water absorbent is sensitive to alum chemicals, and the surface of the paper is often broken quickly and precipitated under the surface of the paper. Therefore, the wax particles in the water extraction agent only exist on the thin layer of paper.
在有外磨擦力的感化下，蜡容易被磨擦掉，显露无蜡包裹的纤维，防水后果大大降低 了加强蜡对纸纤维的附着力，在拔水剂中每每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。如许，它们的加入可增进蜡在纸纤维上的附着性，同时假如对蜡结束改性，如将其氧化、基化，也有类似感化，都可使蜡对纸纤维的附着力增加。然则必须指出的是，便是增加了这些步伐，拔水剂在如许的浓度下所组成的仍不是一个防水膜层，因此在碰到磨擦，如纸箱在搬运、堆码过程中遇磨擦，每每会使这一防水表面获得感化。这便是为什么把涂布拔水剂的这种纸箱定爲暂时性防水纸箱。今朝，拔水剂在一些纸箱厂已经是广泛应用，并成爲一道基本工序。
Under the influence of external friction, wax is easy to be rubbed off, and the fibers without wax are wrapped. The result of waterproofing is greatly reduced, and the adhesion of wax to paper fibers is greatly reduced. In the water extraction agent, there are rosin derivatives or carboxylated polymer emulsions, which have good adhesion to paper fibers and good compatibility with wax. In this way, their addition can improve the adhesion of wax on paper fiber. At the same time, if wax is modified, such as oxidation and basification, it also has similar effects, which can increase the adhesion of wax on paper fiber. However, it must be pointed out that with the increase of these steps, the water extractant at such a concentration is still not a waterproof film. Therefore, when there is friction, such as friction in the process of carrying and stacking cartons, this waterproof surface is often affected. This is why the coating of this kind of carton as a temporary waterproof carton. At present, water extractant has been widely used in some carton factories and has become a basic process.
涂布拔水剂大批应用次如果受到如下四个方面的影响：拔水剂的和可机涂性；拔水剂保持了纸张的天性，与今后回归天然的支流合拍；拔水剂对纸箱的收受接管无晦气影响；拔水剂的防水后果对于通俗纸箱的应用完全可以胜任。
If the large-scale application of coating extractant is affected by the following four aspects: the price and machine coating ability of extractant; the extractant keeps the nature of the paper, which is in line with the trend of returning to nature in the future; the extractant has no bad influence on the acceptance of cartons; the waterproof effect of extractant is completely competent for the application of popular cartons.
然而，必须指出的是，在一些特别情况中应用的纸箱，如需要；东库的纸箱，需要在高湿情况中存放的纸箱，需要海运的纸箱，在应用拔水剂时就要郑重了。在实践中已发现有涂拔水剂的纸箱，从冻库掏出后，纸箱发火形变，激发经济纠纷的事例。因此在举荐客户采纳什麼防水处理时，应充分思考客户纸箱的应用情况。
However, it must be pointed out that the cartons used in some special cases, such as those in dongku, those stored in high humidity and those transported by sea, should be used seriously. In practice, it has been found that the cartons coated with water extraction agent, after being taken out from the freezer, are inflamed and deformed, causing economic disputes. Therefore, when recommending the waterproof treatment adopted by customers, we should fully consider the application of customers' cartons.
Thank you for reading this article. Source: heavy duty carton manufacturers. For more information and questions, please click: http://www.gtmfpack.com We will continue to work hard to provide services for you, thank you for your support!
