What should I do if the white cardboard gift boxes have high and low angles? These 3 aspects must be strictly guarded against!

     

1. The process of white cardboard gift boxes is long, and there are many factors that affect the quality:

    

The production process of white cardboard gift boxes is a multi-process and multi-step process. Due to the long production process of white cardboard gift boxes, the control of each step of white cardboard gift boxes is related to the quality of each product. However, there will still be some problems in actual work, which will affect the smooth production of white cardboard gift boxes.

   

    

2. Common problems in the process of white cardboard gift boxes - high and low angles:

    

The author will analyze the common problems in the white cardboard gift box manufacturing process through 5 issues - high and low angle, acne, dew, blistering, embossing, and hope to be helpful to the white cardboard gift box counterparts. In this issue, let's talk about the high and low angles of the white cardboard gift box.

   

     

3. The grey board is the key skeleton supporting the white cardboard gift boxes:

    

In the manufacturing process of white cardboard gift boxes, the gray board is the key skeleton supporting the white cardboard gift boxes. Whether it is die-cutting or slotting, any problems can affect the forming quality of white cardboard gift boxes. The high and low angles are the most common problems. one.

   

     

4. What are the high and low angles of white cardboard gift boxes?

   

In simple terms, it is the cover or bottom of the white cardboard gift boxes. The width and width of the adjacent two sides are inconsistent. After the four sides are folded, the height of the white cardboard gift boxes is higher on one side than the other. Like stairs, this phenomenon is not only It will cause the white cardboard gift boxes to form a plane at the corners and vertices of the mouth when pasting the wrapping material, and the white cardboard gift boxes will be exposed to dust, and sometimes even the white cardboard gift boxes will be folded.

   

    

5. How did the high and low angles of white cardboard gift boxes appear? Summarize the following factors.

    

5.1. Slotted white cardboard gift boxes

   

Grey board slotting is an important process in the production of white cardboard gift boxes. The offset and non-vertical slot position will directly affect the forming quality of white cardboard gift boxes. This is the most common problem in the slotting process of white cardboard gift boxes.

  

    

5.2. White cardboard gift boxes slot offset

    

During the grooving process of the white cardboard gift boxes, the grooving tool holder is loose, and the tool head is biased to one side, so that the slot can not be carried out according to the predetermined position. In the right state, consistency and stability are affected.

  

In this regard, the operator should measure the slot position every 500 sheets during the operation of the equipment, and at the same time observe whether the tool holder and the tool head have any signs of loosening, find the problem and eliminate it in time, and select the unqualified gray board cards that have been opened. , to prevent substandard products from flowing into the production line.

  

    

5.3. The slot of white cardboard gift boxes is not vertical

     

The main reason that the horizontal slot and the cross vertical slot are not perpendicular is that the error of the paper cutting machine itself is too large, and the cut gray board card cannot reach a right angle of 90 degrees.

When grooving, the gray board card is pushed into the machine parallel to the edge. The slot opened by the first knife is parallel to the edge of the gray board card. When the second knife is opened, the cross angle will change. The most obvious is If the margins on the two ends are inconsistent, there will be obvious high and low angles after the gray board is folded.

   

In order to completely solve this problem, first of all, the white cardboard gift boxes paper cutter must be strictly corrected, and the vertical error should be controlled within the range of process requirements. Only with equipment that meets the precision can cut out the gray that meets the specifications of white cardboard gift boxes. board. In order to prevent the unorthodox gray board from entering the slotting process, the white cardboard gift boxes paper cutting machine personnel should do more inspections and verify the accuracy of the equipment. Once the accuracy is found to be deviation, it must be corrected in time.

   

At the same time, the slotting personnel should check the grey board card before slotting. The method is very simple. Take two gray board cards and stack them one on the other. After the bottom edges are aligned, check whether the two sides are consistent. Quality risk, must not be put into mass production.

   

In addition, for products with high precision requirements, it is necessary to use a die-cutting machine to die-cut the gray board. The die-cut gray board is not only square, but also improves the accuracy of the slot position, and the edge cross-section is smoother and straighter. Therefore, the gray board card die-cutting process has become the best choice to ensure product quality in the current white cardboard gift boxes manufacturing process.

   

    

5.4. Slotting depth of white cardboard gift boxes

    

For the control of the slotting depth of white cardboard gift boxes, because there is no convenient and reliable method, it is often judged by the experience of the operator, feeling the pre-folding strength and observing the light transmittance through simple methods, but this method usually has a large Bias and misjudgment.

   

For example, if the slotting tool of white cardboard gift boxes becomes dull and is not replaced in time, the same pre-folding force may not be consistent with the actual groove depth. For the same groove depth, the light transmittance of gray board cards of different materials is also different. The difference is that the depth of the four slots of the white cardboard gift boxes is inconsistent, and the thickness of the reserve layer will also deviate to varying degrees. When the slot depth on the vertical side changes, the height of the four folded sides will be generated. Gap. Although the error range is small, the height difference after folding will double. Therefore, in order to completely avoid the appearance of high and low angles, it is necessary to ensure that the slot is horizontal and vertical, and the thickness of the bottom should be controlled between 0.10 and 0.15mm. , which is an important indicator.

In order to get rid of the traditional empirical inspection method, the accuracy and consistency of the slotting depth of white cardboard gift boxes can only be guaranteed by using instrument inspection.

   

Using a thickness gauge to measure the groove depth is not only accurate and fast, but there is one point that needs to be paid attention to. The needle must be accurately selected during operation, and the needle must fall on the top of the V-groove, so that the measured data can be accurate.

   

For the depth of each groove, it is necessary to select 3 points to measure in turn, record and display the data and compare. When the depth is found to be different, the groove knife should be re-adjusted to control the error within ±0.03mm, and only according to the data requirements. , the depth of 4 V grooves can be consistent, and the phenomenon of high and low angles will not occur.

   

     

6. Die cutting of white cardboard gift boxes

     

Some white cardboard gift boxes require the gray board to adopt the semi-piercing die-cutting process. Due to the unbalanced pressure adjustment, the depth of one side is shallower than the depth of the other side. After folding the gray board, the half-pierced side will be higher than half. On the shallow side, although the depth error on both sides is only about 0.2mm, after folding, the height error of the mouth edge will be obvious, which will affect the quality of the white cardboard gift boxes pasting process.

   

In this regard, we must first adjust the pressure of the die-cutting machine to balance the pressure around the steel plate. Fold the four sides of the die-cut gray board to see if the adjacent edges of the four corners are flush. If one side is lower than the other, it means that If the semi-penetration depth is inconsistent, reduce the pressure locally or lay paper under the steel plate until it is adjusted to fully meet the process requirements.

   

If it is found that the semi-penetration is too deep and the bottom layer is less than 0.10mm during the inspection, there will be a risk of breakage. This problem is often very concealed and must be paid attention to, especially the multi-joint die-cutting, which is the top priority. , each operator should pay enough attention.

   

    

7. The next issue of white cardboard gift boxes bad phenomenon notice---acne

    

Acne of white cardboard gift boxes refers to the fact that during the pasting process of white cardboard gift boxes, particulate matter remains on the lower layer of the white cardboard gift boxes packaging material, which partially props up the surface to form a raised and irregular bubble, like a Scabies on the surface of human skin is very ugly, which seriously damages the flatness and aesthetics of the white cardboard gift box surface.

How to avoid white cardboard gift boxes acne phenomenon? Stay tuned for the next exciting content.