First, the appearance quality: 1, printing quality: pattern, handwriting printing clear, uniform color, bright and bright; printing position error large box does not exceed 7mm, small box does not exceed 4mm; 2, closed quality: no leakage around the box, each No difference between the cover and the seam; 3. Dimensional tolerance: The inner diameter of the box and the tolerance of the design should be kept in the large box Â±5mm, the small box Â±3mm, the outer dimensions are basically the same; 4, the folding number of the cover: corrugated box cover After reciprocating and folding for more than 5 times at 180 degrees, the total length of cracks in the surface layer of the first and second types of boxes and the inner layer and the third type of box is not more than 70 mm; in addition, the joint specification is required, the edges are neat, and the angle is not overlapped. The surface is not allowed to have obvious damage or smudges. Second, the pressure resistance of the carton and the influencing factors The pressure resistance of the carton is the most important quality indicator for many commodity packaging requirements. During the test, the corrugated carton is placed between the two pressure plates and pressurized. The pressure at which the carton collapses is the carton compressive strength, expressed as KN. 1. Predetermined carton pressure strength The carton requires a certain compressive strength. It is because the carton stacked in the lowest layer of the carton is subjected to the pressure of the upper carton during the storage and transportation process. In order not to collapse, it must have suitable resistance. The compressive strength and the compressive strength of the carton are calculated by the following formula: P=KW(n-1) where P----carton compressive strength, NW----carton weight after loading, N n---- The number of stacking layers K----stacking code safety factor stacking layer number n is obtained according to the stacking height H and the individual carton height h, n=H/h The stacking code safety factor is determined according to the number of layers of the stacking code. National standard: Storage period less than 30d, take K=1.6, storage period, 30d-100d, take K=1.65, storage period, greater than 100d, take K=2.0 2. Calculate the compressive strength of the carton according to the raw materials. After the carton compressive strength is determined, the appropriate one should be selected. Carton board, corrugated paper to produce corrugated boxes, to avoid waste caused by blind production; According to the ring pressure of the base paper, there are many formulas for calculating the compressive strength of the carton, but the more concise and practical is the kellicutt formula, which is suitable for estimating 0201 Type carton compressive strength. 3. The method for determining the compressive strength of the carton is affected by various factors in the production process. The compressive strength of the carton produced by the raw material is not necessarily exactly the same as the estimated result. Therefore, the final method for accurately determining the compressive strength of the corrugated box is The carton is tested with a carton compression tester after constant temperature and humidity treatment; for small and medium-sized factories without test equipment, a wooden board can be placed on the carton, and then an equal amount of heavy objects are piled on the wooden board to roughly determine whether the compressive strength of the carton is satisfactory. Requirements; 4. Factors affecting the compressive strength of the carton 1) Raw material quality The base paper is the decisive factor in determining the compressive strength of the carton, as can be seen by the kellicutt formula. However, the influence of other conditions in the production process of corrugated cardboard is not allowed to be neglected, such as the amount of binder, high-impact impregnation, coating, and composite processing. 2) The moisture carton is made of corrugated cardboard with too high water content, or it can reduce its compressive strength when stored in a humid environment for a long time. Fiber is a kind of water-absorbent. When the rainy season and the humidity in the air are high, the relationship between the moisture content of the paperboard and the atmospheric environment is very important. 3) Box type refers to the type of box and the size ratio of boxes of the same type, which have a significant influence on the compressive strength. Some carton boxes are made of double-layer corrugated cardboard, and the compressive strength is obviously improved compared with the single-layer box of the same specification; under the same conditions, the higher the box, the worse the stability and the lower the compressive strength. 4) Printing and opening printing will reduce the compressive strength of the carton. Products with venting requirements are opened in the box surface, or punching the handle hole on the side of the box, which will reduce the strength of the carton, especially the large opening area, biased to a certain side, etc., the impact is more obvious. 5) Defects in processing process In the process of box making, the pressure line is improper, the groove is too deep, and the combination is not strong, etc., and the pressure resistance of the box is also reduced. Third, the carton dynamic performance test For some specific commodity packaging, such as ceramics, glass products, electrical appliances, instruments, etc., but also to check the carton cushioning performance of the goods, that is, simulation transport, handling, vibration, drop and other tests; 1, drop test The carton after the packaged product is dropped from the specified height according to the posture of the package, and the goodness of the packaged goods in the carton after a certain number of times is checked, or the number of times the carton is dropped when the carton is damaged. 2. The bevel impact test rotates the carton on the trolley, then slides it off the slope of a certain height and finally hits the baffle. It is similar to the emergency braking situation during transportation. 3. Vibration test The carton packaged goods are placed on the vibrating table to be subjected to vibration in the horizontal and vertical directions, or simultaneously subjected to two-way vibration, and the time elapsed after checking the merchandise condition or the destruction of the merchandise carton after a certain period of time. 4. Hex drum rotation test Put the carton into the hexagonal rotary drum equipped with the impact plate, rotate according to the specified number of revolutions, and then check the damage of the goods and the carton. The above dynamic experiments are destructive, and the ability to improve the resistance to damage to cartons and merchandise is the use of cushioning, baffles or other protective measures when packaging goods. In addition, some packaging cartons also need to be sprayed, weather-resistant and other experiments, according to the contractual agreement between the two parties.
Carton Erector refers to automatically complete unpacking, forming, and bottom folding. And now complete the next part of the adhesive tape, open the box board stacked into cardboard, the bottom of the box is folded according to a certain procedure, and sealed with tape and then delivered to the special equipment of the boxing machine. Automatic carton forming machine and automatic unpacking machine are the assembly line equipment for automatic unpacking of large batches of cartons, automatic folding of the lower cover and automatic sealing of the bottom tape. The machine is controlled by PLC+ display screen, which is greatly convenient for operation and is essential for automated large-scale production.
Case Erector,Carton Erector,Case Erector Machine,Carton Erector Machine
Jining Myway Machinery Co., Ltd. , https://www.mwpackall.com