White cardboard gift boxes customization in the white cardboard gift boxes die-cutting of common problems, we to help you solve

    

1. die cutting is the key step in white cardboard gift boxes processing.

     

Die cutting is a key step in white cardboard gift boxes processing, how to ensure the quality of white cardboard gift boxes die cutting is a great concern for printers. At present, the main problems faced by white cardboard gift boxes printers are long plate change time, poor accuracy of printing to cutting, poor die-cutting quality, more paper hairs, too many and too big connection points, irregular trace lines, slow production speed and high scrap rate.

     

     

Rophone packaging has been committed to helping printing and packaging enterprises to achieve process improvement, today, Rophone packaging and everyone to introduce several white cardboard gift boxes more common quality problems and their solutions, I hope it can help your colleagues.

   

     

2. white cardboard gift boxes die-cutting precision is not high

    

The reason for the problem: white cardboard gift boxes die-cutting precision is not high because of the die-cutting version of the problem itself, but also the problem of printing.

- Hand-made white cardboard gift boxes die-cutting version of the error is large.

- white cardboard gift boxes die-cutting indentation and printing process of the operating environment is different will cause paper deformation, resulting in inaccurate die-cutting indentation position, especially after varnishing, laminating, the deformation of the paper is more serious, affecting the die-cutting accuracy.

    

     

Solution: choose advanced white cardboard gift boxes die-cutting plate making process to improve the precision of the die-cutting plate.

Try to ensure that white cardboard gift boxes die-cutting creasing and printing process in the same operating environment, or to ensure the homogeneity of the operating environment (i.e., the same temperature, relative humidity, etc.).

After the varnishing and lamination of the paper to be die-cutting pretreatment, to minimize the impact of paper deformation on die-cutting accuracy.

   

     

3. white cardboard gift boxes die-cutting indentations produce "burst line" and "dark line"

    

The reason for the problem: white cardboard gift boxes "burst line" refers to the pressure of the die-cutting indentation is too large, more than the paper fiber withstand limit, so that the paper fiber fracture or partial fracture.

white cardboard gift boxes "dark line" refers to the undesirable indentation line, generally due to the die-cutting plate and indentation steel line selection is not appropriate, improper adjustment of die-cutting pressure, poor paper quality, paper fiber direction and die-cutting plate row knife direction is not consistent, the paper moisture content is low resulting in a decline in flexibility and other reasons caused by.

Solution.

- Select the appropriate die-cutting plate.

- appropriate adjustment of die-cutting pressure.

- Before die-cutting white cardboard gift boxes to be die-cut printed materials in the workshop for a period of time.

- Increase the relative humidity of the workshop environment.

- To minimize the tension generated on the paper.

    

     

In addition, there is a special case, is in the die-cutting white cardboard gift boxes, due to many positions between the indentation line is very close, if the normal configuration of the height of the indentation line, die pressing on the paper's tension is too large, will also cause "burst line.

Therefore, should try to minimize the pull on the paper, there are two ways: one is to reduce the height of the creasing steel line; second is to reduce the thickness of the creasing bottom die strip, but the two can not be used at the same time, otherwise it will not play a good creasing effect.

The better way is to reduce the height of white cardboard gift boxes creasing steel line, the height of the reduction is usually 0.1 ~ 0.2mm, depending on the quantitative determination of the paper, the quantitative in more than 350g/m2 paper need to reduce the height of the creasing steel line is 0.2mm, the quantitative in 350g/m2 below the paper should be reduced by 0.1mm.

    

    

4. white cardboard gift boxes indentation line run, not full

    

The cause of the problem: white cardboard gift boxes indentation steel line in the role of die cutting pressure twisting, will lead to indentation line running; die cutting pressure is not enough will lead to indentation line is not full.

Solution: Replace the die-cutting plate and increase the die-cutting pressure respectively to improve the problem.

   

     

5. white cardboard gift boxes die-cutting linting, dusting

    

The reason for the problem: in white cardboard gift boxes die-cutting, there will often be die-cut products cutting edge is not smooth, hairy phenomenon, especially from the indentation line closer to some of the cutting edge of the situation is more serious.

This is due to the white cardboard gift boxes die-cutting and pressure, die-cutting version of the adhesive strip, indentation steel line on the paper generated tension, the paper is not completely cut through when the tension generated by the pull off, the white cardboard gift boxes hairy edge.

    

    

Solution: First of all, according to white cardboard gift boxes paper selection of different types of die-cutting knife. Die-cutting knives include straight knives and cross-grain knives, two kinds of grain blade and high and low, the blade formed by the grain and high and low different, directly related to the quality of die-cutting and die-cutting knife life.

In the avoidance of die-cutting hair, straight knife than cross-grain knife; in terms of service life, short sharp knife than high sharp knife good.

In die-cutting white cardboard gift boxes laminated cardboard, you should choose a straight high sharp knife, and require the knife blade is ground, it is best not to use the pressure bump molding process, otherwise the pressure will be too big impact on the die-cutting; and in the processing of ordinary cardboard should be used.

   

    

And in the processing of ordinary cardboard should be used when the short sharp knife, and according to the quality of the paper fiber to determine the blade pattern.

The fiber is poor or coarse paper should be selected straight knife, fiber quality of paper can be selected cross-grain knife to improve the life of the die-cutting knife.

Secondly, you can also be closer to the indentation steel line die cutting knife at 60 ° of the arch adhesive strip, reduce white cardboard gift boxes die with the pressure of the indentation steel line on the paper generated by the pull.

Such as die-cutting quantitative 300g / m2 of paper usually choose 0.4mm × 1.3mm, 23.4mm high creasing steel line, such as this failure can be replaced with 0.4mm × 1.2mm, 23.3mm high tip creasing steel line, so as to reduce the white cardboard gift boxes die with pressure on the paper's pull, die-cutting linting The problem can be basically solved.

   

   

6. white cardboard gift boxes die-cutting "paste version"

     

The cause of the problem: white cardboard gift boxes die-cutting "paste version" refers to the paper sticking to the die-cutting version, the causes of this failure are the following.

- Die-cutting knife around the adhesive sponge tape density is too small or too small hardness, rebound force is not enough.

- Die-cutting knife edge is not sharp, the paper is too thick, causing clamping knife or die-cutting sticky knife.

Solution: according to the distribution of the die-cutting knife, the reasonable choice of white cardboard gift boxes different hardness of the sponge strip or replace the die-cutting knife.

   

    

7. white cardboard gift boxes die-cutting "loose version"

    

The reason for the problem: white cardboard gift boxes die-cutting "loose plate" mainly with the die-cutting version of the plate-making process and sponge tape related. If the shape of the live parts is complex or arranged in a lot of live parts, and die-cutting version of the connecting point is small and little, it is easy to cause die-cutting loose plate.

Solution: Increase the number of dots on the die-cutting plate of white cardboard gift boxes appropriately, and try to keep the length direction of the printed matter in line with the direction of paper delivery when making the die-cutting plate of white cardboard gift boxes.

   

   

8. white cardboard gift boxes connection point is too big

    

The end users of white cardboard gift boxes always ask for smaller and fewer connection points, and the manufacturers of white cardboard gift boxes always make the machine run faster, which makes it more difficult for the operator. In order to reduce the difficulty, the connection point should be at the stress point, hit by wire grinding machine, use hard tape or soft wood at the edge of the knife that needs to hit the connection point to prevent the connection point from breaking, so that the connection point can be smaller and less.　

  

     

9. white cardboard gift boxes trace line irregularity

     

Considering the need of folding and gluing boxes, white cardboard gift boxes must have good creasing lines. What's more, when white cardboard gift boxes are running on the automatic packing machine, the opening force must be stable and consistent. In this way, the selection of the right type of creasing line is an essential element when die-cutting white cardboard gift boxes. Depending on the thickness of the paper, the height and width of the mark line is chosen and the right mark line is bonded to the die-cutting base, so that the indentation can achieve higher quality and make the box easy to fold.

   

    

10. white cardboard gift boxes long changeover time

    

The preparation work before changing white cardboard gift boxes should be done well. Using the center line of the machine as a reference, you can easily and accurately set up the die-cutting tools, including full-size die-cutting plates, pre-assembled bottom die plates, etc. At the same time, white cardboard gift boxes tools are pre-loaded off the machine and fine tuning on the machine further reduces the adjustment time for repetitive products. With a good management system, usually the plate change time for repeat products, including automatic scrap removal, can be completed in less than 30 minutes.

   

 

    

11. slow production speed of white cardboard gift boxes

    

Many white cardboard gift boxes printer's die-cutting machine die-cutting speed is relatively low, such as 2000 to 3000 sheets / hour, while some printers die-cutting machine die-cutting speed can be as high as 7000 to 7500 sheets / hour.

Using modern white cardboard gift boxes automatic die-cutting machine, the operator can easily achieve the highest production speed. The production speed can be optimized by using the tools recommended by the equipment manufacturer. In addition, the high quality of white cardboard gift boxes can be achieved. 

  

   

12. high scrap rate of white cardboard gift boxes

Most printers have a high rejection rate of white cardboard gift boxes. There will be some scrap at the beginning of die-cutting and tuning, which can be reduced by using the right tools and the right procedures. Scrap during the run is the result of downtime and jamming, and proper alignment and accurate tooling preparation can reduce scrap rates. In addition, manual scrap removal can increase the scrap rate of white cardboard gift boxes and reduce profitability.

As the consumer market is upgrading, consumers are demanding more and more value for white cardboard gift boxes packaging, so it is very important for printers to do a good job of printing white cardboard gift boxes, and the die-cutting process as a key step in the printing of white cardboard gift boxes. Only with a detailed understanding of the problems that are likely to arise and to solve them, can we better complete the printing of white cardboard gift boxes.