1.四层瓦楞纸板黏合要点
1. Bonding points of four layer corrugated board
（1）瓦楞芯纸复合时，涂布胶水会增加瓦楞芯纸含水量，胶黏剂干燥后又要防止瓦楞芯纸脆化，因此选择含水量少、渗透性缓，并易于均匀涂布的瓦楞芯纸复合用胶黏剂非常关键。
(1) When the corrugated core paper is compounded, the coating glue will increase the water content of the corrugated core paper. After the adhesive is dried, it will also prevent the corrugated core paper from embrittlement. Therefore, it is very important to choose the composite adhesive with low water content, slow permeability and easy uniform coating.
（2）在满足复合后黏合强度的前提下，上胶量以尽可能少为原则。
(2) On the premise of meeting the bonding strength after composite, the amount of glue shall be as small as possible.
（3）压瓦楞前，控制好复合后的瓦楞芯纸的湿度也很重要。湿度太大不但影响成型，而且会在复合时引起脱胶；湿度太小，会在瓦楞成型弯曲时使楞峰脆化破裂。
(3) Before pressing corrugating, it is also very important to control the humidity of the composite corrugating core paper. Too high humidity not only affects the molding, but also causes degumming during compounding; If the humidity is too low, the corrugated peak will be brittle and broken when the corrugated forming is bent.
（4）四层瓦楞纸板的瓦楞楞型应由制辊企业根据两层瓦楞芯纸和一层胶的厚度专门计算设计，以生产出理想的瓦楞纸板。
(4) The corrugated type of four layer corrugated board should be specially calculated and designed by professional roller making enterprises according to the thickness of two layers of corrugated core paper and one layer of glue, so as to produce ideal corrugated board.
（5）在真空吸附式单面机上加工四层瓦楞纸板时，要注意调节好吸附系统（吸附罩与瓦楞辊的位置、间隙和风量）和加热系统；复合后的瓦楞芯纸要求有更高的温度才能将热量传递到楞峰，满足糊化温度的要求。加厚的瓦楞芯纸硬度会变大，容易在成型后脱离瓦楞辊，影响涂胶和复合，产生高低楞、塌楞、脱胶和“木耳边”等质量问题，所以必须有足够的吸附风量和负压以及加热温度，才能保证在瓦楞纸板成型后顺利涂胶复合。
(5) When processing four layers of corrugated paperboard on the vacuum adsorption single-sided machine, attention should be paid to adjusting the adsorption system (the position, gap and air volume between the adsorption cover and the corrugated roller) and the heating system; The composite corrugated core paper requires a higher temperature to transfer heat to the corrugating peak to meet the requirements of gelatinization temperature. The hardness of thickened corrugated core paper will become larger, and it is easy to break away from the corrugating roller after forming, which will affect the gluing and compounding, and cause quality problems such as high and low corrugation, collapse, degumming and "ear edge". Therefore, there must be enough adsorption air volume, negative pressure and heating temperature to ensure smooth gluing and compounding after forming.
2.车速与纸板质量的关系
2. The relationship between speed and paperboard quality
（1）应以生产线更稳定、更经济的速度为理想的调整速度。
(1) The most stable and economical speed of the production line should be the ideal adjustment speed.
（2）纸张的强度和湿度应适合车速。
(2) The strength and humidity of the paper should be suitable for the vehicle speed.
（3）车速的波动会影响纸张的湿度控制。车速越稳定，各层纸张的湿度控制越稳定，纸板的质量也越稳定，此时好的供热系统非常必要。
(3) The fluctuation of vehicle speed will affect the humidity control of paper. The more stable the speed is, the more stable the humidity control of each layer of paper is, and the more stable the quality of paperboard is. At this time, a good heating system is very necessary.
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