纸箱抗压强度试验标准和方法
纸箱抗压强度试验主要用于各种包装体和纸箱的抗压强度，以防止产品在使用、搬运、堆放、储存和运输过程中因各种包装体强度不足而变形和损坏。也可用于堆叠测试。试验结果可作为工厂堆放成品包装箱高度的重要参考，纸箱抗压强度要求如下：
1、 纸箱外观质量：
1、密封质量：箱体四周无渗漏，箱盖合上后无错缝、分缝；
2、尺寸公差：箱体内径与设计尺寸的公差，大箱体在±5mm以内，小箱体在±3mm以内，外形尺寸基本相同；
3、印刷质量：图案、字迹印刷清晰，色度一致，明亮明亮；大盒印刷位置误差不超过7mm，小盒印刷位置误差不超过4mm；
4、盖的折叠次数：瓦楞纸箱摆动盖通过180度的开闭前后折叠5次以上，一、二类箱的表层、内层和内层裂纹总长度不大于70mm；
此外，接缝应规范，边缘应整齐，无重叠角，箱体表面应无明显损坏或污渍
Test standard and method for compressive strength of cartons
The carton compressive strength test is mainly used for the compressive strength of various packaging bodies and cartons to prevent the products from deformation and damage during use, handling, stacking, storage and transportation due to insufficient strength of various packaging bodies. It can also be used for stacking test. The test results can be used as an important reference for the height of finished product packaging boxes stacked in the factory, and the compressive strength of cartons has the following requirements:
1、 Carton appearance quality:
1. Sealing quality: there is no leak around the box, and there is no stagger and seam separation after the box covers are closed;
2. Dimensional tolerance: the tolerance between the inner diameter of the box and the design dimension shall be kept within ± 5mm for the large box and ± 3mm for the small box, and the overall dimension is basically the same;
3. Printing quality: the pattern and handwriting are printed clearly, with consistent chromaticity, bright and bright; The printing position error shall not exceed 7mm for large boxes and 4mm for small boxes;
4. Fold times of cover: the corrugated box swing cover is folded back and forth for more than 5 times through 180 degrees of opening and closing, and the total length of cracks in the surface layer, inner layer and inner layer of class I and class II boxes shall not be greater than 70mm;
In addition, the joint shall be standard, the edges shall be neat without overlapping corners, and the box surface shall be free of obvious damage or stains
