Analysis of Fault Problems of Automatic foil stamping die cutting machine

Summary: Automatic foil stamping die cutting machine will inevitably have some faults during use. So, what are the common faults of f oil s tamping machine ? This article mainly analyzes the common use problems of f oil s tamping machine . bubbles in the f oil s tamping area, wrinkling in the f oil s tamping area and other problems and solutions.

Analysis of Fault Problems of Automatic foil stamping die cutting machine

What are the common faults of foil stamping machines :

 1. The foil stamping machine is repaired or the foil stamping is not strong:

a: Light pressure or low temperature – increase pressure or increase temperature and time.

b:The foil-stamping material does not match the object to be ironed. Choose the appropriate foil stamping material.

 2. After foil stamping , it is dull and the paste is not clear :

Foil-stamping temperature is too high and the pressure is too high, reduce the temperature and reduce the pressure.

 3. the same plate after foil stamping varies :

The large size of the image and text area and the uneven pressure will increase the large-area image and text pressure, which can be corrected by the padding method to adjust the pressure of the large and small areas to be equal.

 4. Unable to burn or the burn marks fall off :

a: The foil-stamping material does not match the object to be ironed, so choose the appropriate foil-stamping material;

b: If the quality of the foil stamping material is not good, replace it temporarily, check its quality, temperature is too low, pressure is too low – re-adjust the temperature and pressure;

c. No adhesion promoter or too much powder during printing – use adhesion promoter, remove the printing Powder the same material, normal.

 5. Good times and bad in foil stamping : unstable material quality :

a: Check material quality, temporarily replace and record

b: Abnormal temperature or pressure – check temperature, time, pressure, and adjust foil-stamping .

 6. The thin line graphics and text are not clear :

a: Patterned fabrics with excessively large concave and convex patterns by foil-stamping are not suitable for foil-stamping thin line drawings

b: If the pressure is too light, increase the pressure and temperature to make up.

 7. Leakage after foil stamping :

a: The pattern of the product being foil stamped is too deep to increase the pressure

b: The pressure is small, the temperature is low, and the temperature is increased by 5 degrees.

Analysis of common problems in Foil stamping die cutting machine

1. Foil stamping is not firm

(1) When the foil-stamping is not firm due to the low temperature or light pressure of the foil stamping , the temperature and pressure can be readjusted;

(2) During the printing process, due to the excessive amount of drying oil added to the ink, the surface of the ink layer dries too fast to cause crystallization, so that the foil-stamping foil cannot be hot stamped . The solution is to first try to prevent the occurrence of crystallization during printing, and secondly, if the crystallization occurs, the foil stamping foil can be removed, and the printed product can be air-pressed under heating to destroy the crystalline layer, and then carry out foil-stamping .

(3)  Adding wax-containing lightening agent, anti-sticking agent or non-drying oily substance to the ink will also cause poor foil-stamping . The solution is to first stick a layer of absorbent paper on the printing plate and press it again, and then carry out the foil-stamping operation after adsorbing the wax and insoluble oil on the bottom ink layer.

2. The pictures and texts of F oil stamping are blurred and dizzy

F oil stamping process, it was found that the pictures and texts were blurred and dizzy, which were mainly caused by the high foil-stamping temperature and the coking of the foil stamping paper. If the foil-stamping temperature of the printing plate is too high, so that the foil stamping paper film exceeds the acceptable limit, at this time, the foil stamping paper film will expand around, If the phenomenon of dizziness and void occurs, the temperature must be adjusted to an appropriate range according to the characteristics of foil-stamping paper. For the coking of foil-stamping paper, the main reason is that the shutdown of the foil stamping process is too long, so that a certain part of the foil-stamping paper is in contact with the electrothermal high temperature printing plate for a long time, and the phenomenon of thermal coking occurs . Therefore, if the production process is stopped, the temperature should be lowered, or the foil-stamping paper should be removed, or a thick paper can be placed in front of the higher temperature printing plate to isolate the soup gold paper from the printing plate.

3. 
   

   Fuzzy and pasted version

The main reasons for this failure are that the foil-stamping temperature is too high, the foil stamping paper coating is too thick, the embossing force is too large, and the foil stamping paper installation is loose . Appropriate measures should be taken according to the specific situation. The high temperature of foil-stamping is the main reason for unclear writing and paste. During foil-stamping , if the temperature of the printing plate is too high, the base layer and other film layers will transfer and stick, resulting in unclear writing and paste. Then the foil stamping temperature should be appropriately adjusted according to the temperature range of the foil stamping paper . In addition, foil stamping paper with a thinner coating should be selected , the appropriate pressure should be adjusted, and the pressure of the pinch roller and the tension of the winding roller should be adjusted appropriately.

4. The image and text edges are uneven and unclear

main performance is that when foil-stamping , the edge of the picture and text has a burr phenomenon, which affects the printing quality. The main reasons for this phenomenon are: uneven pressure on the printing plate, mainly because the layout is not flat when the plate is loaded, which causes the pressure on the layout to be uneven, some of the pressure is too high, and some are too small, so that the graphics and text are affected. If the force is uneven, the surface of the foil-stamping paper will not be smooth, and the adhesion between each part and the substrate will be different, resulting in uneven printing. Therefore , the foil-stamping plate must be flat and solid to ensure that the foil stamping pressure is even, so as to ensure that the pictures and texts are clear. In addition, if the pressure of the printing plate is too large during foil stamping , it can also cause the image and text to be printed unevenly. During the foil-stamping process, it is necessary to adjust the foil-stamping pressure to an appropriate level. It is necessary to ensure that the pads of the embossing machine should be accurately fitted according to the area of the pattern, without shifting or moving. In this way, it can be ensured that the image and text are consistent with the pad layer during foil-stamping , and the hair around the image and text can be avoided. Also, the pressure is uneven after foil-stamping on the same plate . This is because the size of the image and text area is very different, the pressure of the large area of the image and text should be increased, and the padding method can be used to correct and adjust the pressure of the large and small areas to make them equal. Finally, if the temperature is too high during foil-stamping , it will also cause uneven printing of images and texts. Therefore, it is necessary to control the foil-stamping temperature of the printing plate reasonably according to the characteristics of foil stamping paper, so as to ensure that the four sides of the image and text are smooth, flat and hair-free.

5. The image and text imprints are incomplete, missing strokes

This failure is mainly caused by foil-stamping paper conveying speed, printing plate and other reasons. For example, the damage or deformation of the printing plate is an important reason for the incompleteness of the graphic imprint. Therefore, if the printing plate is found to be damaged, the printing plate should be repaired or replaced immediately. The deformation of the printing plate makes the printing plate unable to withstand the applied foil stamping pressure, the printing plate should be replaced and the pressure should be adjusted. If the foil stamping paper is cut and conveyed with deviation, the foil-stamping paper will have too small margins when it is cut horizontally, or the foil stamping paper will deviate when it is slanted and unrolled for conveyance, which will cause the foil stamping paper to not match the printing plate graphics, and some graphics and texts will be exposed. resulting in incompleteness. In order to prevent such problems, the foil-stamping paper should be trimmed neatly and flatly, and the margin size should be appropriately increased. Improper conveying speed and tightness of foil-stamping paper can also cause this failure. The foil stamping paper splicing device is loose and displaced, or the winding core and the unwinding shaft are loose, the unwinding speed changes, and the foil stamping paper tightness changes, causing the position of the graphics and text to deviate, resulting in incomplete graphics and text. At this time, it is necessary to adjust the rewinding and unwinding positions. If the foil stamping paper is too tight, the pressure of the pressing roller and the tension of the rewinding roller should be adjusted appropriately to ensure a suitable speed and tightness. This kind of failure can also occur when the foil stamping material is uncomfortable with the object being foil stamped or too much powder is sprayed during printing, so you should pay attention to adjustment. In addition, the printing plate part moves or falls at the position of the bottom plate, the pad of the imprinting mechanism is displaced, etc., so that the normal foil-stamping pressure changes and is uneven, which will result in incomplete graphic imprints, such as too light pressure , can increase the pressure. Therefore, in the process of foil stamping paper foil-stamping , the quality of foil stamping should be checked frequently , and the quality problems should be analyzed immediately, and the printing plates and pads should be checked. If it is found that the printing plate moves or the backing material is displaced, adjust it in time, and put the printing plate and backing material back in place to fix it.

6. The foil stamping cannot be applied or the pictures and texts are flowery

foil stamping , the pictures and texts appear to be blurred or not at all foil stamping . The main reasons are :

(1) Foil-stamping temperature is too low , and the foil-stamping temperature of the printing plate is too low to reach the minimum temperature required for the anodized aluminum foil to be separated from the base and transferred to the substrate . Flowers, bottomless or foil stamping will not work. If this kind of quality problem is found, it is necessary to appropriately increase the temperature of the hot plate in time until the foil stamping produces a good print.

(2) The foil-stamping pressure is small. During the foil stamping process, if the foil stamping pressure of the printing plate is too small and the pressure applied to the anodized aluminum foil is too light, the foil-stamping paper cannot be transferred smoothly, making the foil-stamping graphics incomplete. If this situation is found, it is necessary to first analyze whether the foil stamping pressure is small, and observe the severity of the imprinting marks. If the foil stamping pressure is small, the foil stamping pressure should be increased .

(3) The background color is too dry and the surface is crystallized, so that the foil-stamping paper cannot be foil stamped . When foil stamping , the dryness of the background color is printed immediately within the printable range. When printing the background color, the ink layer should not be too thick. When the printing volume is large, it should be printed in batches, and the production cycle should be shortened appropriately. Once the crystallization phenomenon is found, the printing should be stopped immediately, and the printing should be continued after finding and troubleshooting.

(4) The type of foil stamping paper is wrong or the quality is not good. When the foil stamping paper model is wrong or the quality is not good, the foil-stamping quality also has problems. At this time, the foil stamping paper with suitable type, good quality and strong adhesion should be replaced . For substrates with a larger foil stamping area, foil-stamping can be performed twice in a row to avoid blooming, exposed bottom and failure of foil-stamping .

7. Foil stamping matt

Most of this happens because the foil stamping temperature is too high or the foil-stamping pressure is too high or the foil stamping speed is too slow. The temperature of the electric heating plate should be appropriately reduced, the pressure should be reduced, and the foil-stamping speed should be adjusted . In addition, try to play as few empty cars as possible and reduce unnecessary parking, because empty cars and parking will increase the temperature of the electric heating plate.

8. The quality of foil stamping is unstable

The same material is used, but the quality of foil-stamping varies . The main reasons are unstable material quality, problems with the temperature control of the hot plate or loose pressure adjustment nuts. The material can be replaced first. If the fault persists, it may be the problem of temperature or pressure. The temperature and pressure should be adjusted and controlled successively.

9. The bottom leaks after foil stamping

The main reason is that the pattern of the object to be ironed is too deep, and the pattern of the object to be ironed should be replaced; if the pressure is too small and the temperature is too low, the pressure can be increased to increase the temperature.

All in all, there are many reasons for foil stamping failures in foil-stamping paper . In addition to foil-stamping temperature and pressure speed, attention should also be paid to problems such as printing materials or replacement of foil-stamping paper. Exclude all kinds of reasons.