1. 瓦楞紙箱的材質(zhì)：瓦楞紙箱是由面紙，芯紙，里紙構(gòu)成的，材質(zhì)的優(yōu)劣對瓦楞紙箱質(zhì)量好壞影響較大，市面上各廠家材質(zhì)代碼略有不同,原紙的等級劃分有A紙，B紙，C紙，K紙，一般K紙為200g左右,A約為160g左右,B為120g左右。在相同楞別的條件下，K級紙優(yōu)于A級紙,A級紙優(yōu)于B級紙,B級優(yōu)于C級紙,材質(zhì)的好壞手感能感覺出來，優(yōu)材質(zhì)重量足，手感厚重，堅挺，外觀顏色均勻，有光澤，雜質(zhì)少。
材質(zhì)對比
C一般為再生紙,吸水性快易爛，性能不如B級紙。吸水性對比
2.瓦楞紙箱的工藝，包括紙板印刷，開槽，釘合等工藝，在印刷開槽機(jī)組中，該部分主要由上、下壓線輪，上、下輥筒，上、下開槽刀。紙板經(jīng)過上、下壓線輪完成瓦楞紙板的縱壓線及送紙功能，隨著科技的發(fā)展，印刷開槽設(shè)備實現(xiàn)了自動化，采用吸風(fēng)式進(jìn)紙，這種送紙方式直接關(guān)乎紙板加工過程中紙箱的挺度與印刷位置。壓力過大會導(dǎo)致紙板變軟，挺度降低，都會影響瓦楞紙箱諸如箱壓，承重等性能，壓力過小，印刷會跑位。
瓦楞紙箱質(zhì)量好壞，成型后合箱目視能初步做出判斷，箱體是否周正，手感是否堅挺，印刷是否清晰，合蓋是否密封等，這些紙箱質(zhì)量指標(biāo)都與工藝有著密切的關(guān)系，所以工藝水平考驗著印刷師傅的水平，決定著公司技術(shù)實力的高低。
1. material of corrugated box: corrugated box is composed of face paper, core paper and lining paper. The quality of the material has a great impact on the quality of corrugated box. The material codes of various manufacturers in the market are slightly different. The grade of base paper includes a paper, B paper, C paper and K paper. Generally, K paper is 200g left and right, a is about 160g and B is about 120g. Under the same conditions, k-grade paper is better than A-grade paper, A-grade paper is better than B-grade paper, and B-grade paper is better than C-grade paper. The quality of the material can be felt. The quality material has sufficient weight, thick and firm feel, uniform appearance color, luster and less impurities.
Material comparison
C is generally recycled paper, with fast water absorption and easy deterioration, and its performance is not as good as grade B paper. Water absorption comparison
2. the corrugated box process includes paperboard printing, slotting, stapling and other processes. In the printing slotting unit, this part mainly consists of upper and lower line pressing wheels, upper and lower rollers, and upper and lower slotting knives. The paperboard passes through the upper and lower pressing wheels to complete the longitudinal pressing line and paper feeding functions of corrugated paperboard. With the development of science and technology, the printing slotting equipment has realized automation, and the air suction paper feeding is adopted. This paper feeding method is directly related to the stiffness and printing position of the carton in the paperboard processing process. If the pressure is too high, the paperboard will become soft and the stiffness will be reduced, which will affect the performance of corrugated boxes, such as box pressure and load-bearing. If the pressure is too low, the printing will move.
The quality of corrugated boxes can be preliminarily judged by visual inspection after forming. Whether the boxes are upright, whether the feel is firm, whether the printing is clear, whether the covers are sealed, etc. These carton quality indicators are closely related to the process. Therefore, the process level tests the level of printers and determines the level of the company's technical strength.
