Why does Pet Film Heat Transfer Printer Return Oil And Bubble?

Pet Film Heat Transfer Printer is a special hot stamping technology. Using a special DTF machine and supporting consumables, you can stamp patterns on materials such as clothing.

Compared with traditional printing technology, it has the advantages of vivid patterns, good durability, high breathability and the ability to achieve complex designs.

Today we will explain to you about common problems: Why does DTF film return moisture? How should this situation be handled?

First, let’s understand the reasons: a series of problems such as oil, water return, and bubbling are actually closely related to the machine process, materials, and environment.

01 Process factors

After the pet film t-shirt printer prints the white ink part, it will enter the powder spreading state. At this time, about 50%-60% of the water is still trapped in the white ink layer. Then the film will be sent to the constant temperature drying area of ​​135 to 140 degrees. The glue powder will quickly melt into a film, sealing the white ink. At this time, there is still 30%-40% of moisture in the white ink, which is sealed between the film and the glue powder by this layer of tpu glue powder.

Although the surface of the finished film looks dry, it is actually just an illusion. When the remaining water in it condenses. Water droplets will form. This is an important cause of moisture and water on the surface of the finished film.

02 Material factors

The influence of materials on the quality of white ink heat transfer is self-evident. It has a huge impact on the color accuracy, detail performance, durability, and even feel of the finished product.

Since the printing film is easy to absorb moisture, when storing the white ink heat transfer printing film, more attention should be paid to moisture-proof.

03 Environmental factors

In a humid environment, the printing film is easy to be damp, causing the ink to condense on the printing film, resulting in the inability of ink droplets to spread evenly, resulting in oil return. In addition, a humid environment can easily cause the nozzle of the white ink heat transfer printer to be clogged, thus affecting the printing effect.

Therefore, in order to maintain the quality and effect of DTF white ink heat transfer. It is necessary to avoid using the machine in a humid environment.

How to avoid oil return in DTF transfer ink heat transfer?

1. Open windows for ventilation frequently Open windows for ventilation frequently to keep the indoor air circulating and avoid humid air from being trapped indoors. Thereby reducing the chance of white ink heat transfer being damp.
2. Use a dehumidifier In humid seasons or areas, a dehumidifier can be used to reduce indoor humidity. Thereby reducing the possibility of white ink heat transfer being damp.
3. Properly control the printing temperature Excessive printing temperature will cause the ink to evaporate too quickly, and it is easy to form water droplets on the printing film, resulting in oil return. Therefore, during the printing process, the printing temperature should be properly controlled.
4. Clean the print head regularly. Cleaning the print head regularly can keep the print head in good condition and avoid excessive ink residue on the printing film due to blockage of the print head.
5. Store the heat transfer film properly. Whether it is the raw material of the printing film or the finished product of the heat transfer film that has been printed. It should be avoided in a humid environment (such as a basement or bathroom). The printing medium easily absorbs moisture. And the heat transfer film affected by humidity can cause ink scattering and other phenomena. Therefore, please be sure to wrap the film, seal it well and store it in a ventilated and dry place.