一、纸板翘曲

1、 Cardboard warpage

一般情况下，瓦楞纸板有六种翘曲变形，其中最常见的有

Generally, corrugated board has six kinds of warpage deformation, of which the most common is

1.横向翘曲

1. Lateral warpage

原因如下:内原纸含水率过高(或面纸含水率过低)；单面瓦楞粘合中水分过多；内、面纸的定量档次相差太大。

The reasons are as follows: the moisture content of inner base paper is too high (or the moisture content of face paper is too low); Excessive moisture in single-sided corrugated bonding; The quantitative grade difference between inner and outer paper is too large.

解决方法:(1)增加单面机滚筒上内纸的卷绕面；(2)减少双层预热器上内纸的缠绕面；(3)关闭板式干燥器的一些蒸汽阀；(4)提高复合机的运行速度；(5)减小刮胶辊、施胶辊和下瓦楞辊之间的间隙，减少单面瓦楞的施胶量；(6)更换严重超标的内纸。

Solutions: (1) increase the winding surface of the inner paper on the drum of the single-sided machine（ 2) Reduce the winding surface of the inner paper on the double-layer preheater（ 3) Close some steam valves of the plate dryer（ 4) Improve the running speed of compound machine（ 5) Reduce the gap between the rubber scraping roller, the rubber application roller and the lower corrugating roller, and reduce the sizing amount of single-sided corrugating（ 6) Replace the inner paper seriously exceeding the standard.

2.横向向下翘曲

2. Lateral downward warping

原因如下：面巾纸原纸含水量过高；加热部件的温度和速度异常。

The reasons are as follows: the water content of tissue base paper is too high; Abnormal temperature and speed of heating components.

解决方法：(1)在双层预热器上增加薄纸加热缠绕面；(2)使用粘度好的胶粘剂，减少复合机上的胶量；(3)减少滚筒干燥机上单面机内纸张的卷绕面；(4)降低复合机的生产速度；(5)正确调整生产线的速度和平烘缸的蒸汽阀，使之匹配；(6)更换严重超标的面纸。

Solutions: (1) add thin paper heating winding surface on the double-layer preheater（ 2) Use adhesive with good viscosity to reduce the amount of adhesive on the compounding machine（ 3) Reduce the winding surface of the paper in the single-sided machine on the drum dryer（ 4) Reduce the production speed of compound machine（ 5) Correctly adjust the speed of the production line and the steam valve of the drying cylinder to match them（ 6) Replace the face paper seriously exceeding the standard.

二、纸板的假粘合

2、 False bonding of paperboard

所谓纸板假粘是指纸板离开机器后，纸、内纸、瓦楞纸可以随意剥离的现象。

The so-called false sticking of paperboard refers to the phenomenon that the paper, inner paper and corrugated paper can be stripped at will after the paperboard leaves the machine.

主要原因是:(1)胶粘剂的粘度不够或已经变质；(2)瓦楞机或复合机速度过快；(3)瓦楞机压辊压力不均匀或瓦楞辊磨损；(4)复合涂胶器胶辊间隙过大；(5)纸张含水量过高。解决方法:(1)提高和稳定胶粘剂的质量。相关数据表明，胶粘剂的粘度一般在60S到90S之间；冬天；一般夏天持续90S到120S。七层盒的粘度一般比三层盒慢305℃左右。(2)保证蒸汽压力为1.0兆帕-1.2兆帕，每个滚筒和平板干燥机的温度在160℃左右；(3)国产瓦楞辊产量达到300万米至350万米时，必须及时更换。

The main reasons are: (1) the viscosity of the adhesive is not enough or has deteriorated（ 2) The speed of corrugating machine or compound machine is too fast（ 3) The pressure of the press roll of the corrugating machine is uneven or the corrugating roll is worn（ 4) The rubber roller gap of compound gluer is too large（ 5) The moisture content of the paper is too high. Solutions: (1) improve and stabilize the quality of adhesive. The relevant data show that the viscosity of the adhesive is generally between 60s and 90s; Winter; Generally, it lasts from 90s to 120s in summer. The viscosity of the seven layer box is generally about 305 ℃ slower than that of the three-layer box（ 2) Ensure that the steam pressure is 1.0 MPa - 1.2 MPa, and the temperature of each drum and plate dryer is about 160 ℃（ 3) When the output of domestic corrugated rollers reaches 3 million meters to 3.5 million meters, they must be replaced in time.

三、搓板现象

3、 Washboard phenomenon

所谓搓板现象，是指在制成的瓦楞纸板表面组织上，脊部与脊部脊部之间的凹陷现象，其形状类似家用搓板，故称搓板现象。

The so-called washboard phenomenon refers to the depression between the ridge and the ridge on the surface tissue of the made corrugated board. Its shape is similar to the domestic washboard, so it is called washboard phenomenon.

瓦楞纸板搓板现象的根本原因主要是由于胶粘剂涂胶不当和冷锋两侧聚集过多胶水的影响。这种情况对低定量的箱板纸尤其有害。

The root cause of corrugated board washboard phenomenon is mainly due to the improper application of adhesive and the influence of too much glue on both sides of the cold front. This situation is particularly harmful to low weight carton paper.

控制搓板现象的具体方法有:调整面纸的基重，改用基重更高的箱板纸是消除和减少搓板最直接有效的方法(但会增加成本)；

The specific methods to control the washboard phenomenon are: adjusting the base weight of face paper and switching to box board paper with higher base weight is the most direct and effective method to eliminate and reduce washboard (but it will increase the cost);