Dealing with oil back on DTF transfer film can be frustrating, especially when it affects the quality of your prints. Understanding the causes and solutions is crucial for maintaining high standards in your printing process.

Avoid over-printing: Over-printing leaves too much ink on the film, causing moisture and oil return. Control the amount of ink used during the printing process to prevent this issue and ensure better print quality.

What is Oil Back for DTF Transfer Film?

Oil back in DTF (Direct-to-Film) transfer film refers to the phenomenon where printed films become oily or greasy over time.

This occurs when the ink does not properly set or cure, leading to moisture and oil returning to the film’s surface. This issue can compromise the quality of the final product, making it less appealing and durable.

Why Could Oil Back Happen?

Oil back can occur due to several reasons:

1. Over-Printing: Applying too much ink during the printing process can result in excess moisture, which eventually leads to oil back. It’s essential to use the right amount of ink to avoid this problem.
2. Insufficient Drying/Curing: If the film is not adequately dried or cured after printing, the residual moisture can cause oil to return to the surface. Proper curing techniques are crucial to prevent this.
3. Environmental Factors: High humidity and poor storage conditions can exacerbate the oil back issue. It’s vital to store printed films in a controlled environment to maintain their quality.
4. Ink Concentration and Film Quality: The concentration of the ink and the quality of the DTF film are also significant factors. Poor-quality films with inadequate ink absorption layers can lead to oil back issues. Ensuring high-quality film and appropriate ink concentration is essential for optimal results.

How to Avoid Oil Back?

To avoid oil back on DTF transfer film, consider the following solutions:

1. Control Ink Usage: Avoid over-printing by using the correct amount of ink for each print. This reduces the risk of excess moisture leading to oil back.
2. Proper Drying/Curing: Ensure that your prints are thoroughly dried and cured. Use high-quality dryers and follow the recommended curing times and temperatures to set the ink properly.
3. Environmental Control: Store your printed films in a cool, dry place with controlled humidity levels. This helps prevent moisture from affecting the prints and causing oil back.
4. Use a High-Quality Dryer: Invest in a reliable dryer that ensures even and thorough drying of your prints. A good dryer can significantly reduce the chances of oil back by eliminating excess moisture effectively.
5. Quality Materials: Use high-quality DTF films with good ink absorption layers and ensure the ink concentration is suitable for your printing needs.

Function Of DTF Dryer

Since there are many factors that cause the dtf transfer film to return oil, so what are the solutions? Today we will focus on the principle of replacing a good dryer to solve the problem of oil return.

You should know the dryer is playing an import role during dtf transfer printing. What it is function actually?

Dryers play a crucial role in the production of DTF (Direct to Film) Transfer Films, primarily functioning to quickly dry white and colored inks after printing, effectively preventing ink migration.

Ink migration often occurs due to incomplete curing of the ink, which not only affects the aesthetics of the pattern but can also degrade the practical performance of the product.

Therefore, choosing the right dryer is essential for ensuring both product quality and production efficiency.

By choosing the appropriate dryer, you can not only increase production efficiency but also significantly enhance the final product quality.

When selecting a dryer, it is important to consider the scale of production, product characteristics, and specific requirements of the production process to determine the most suitable type。

How many types of Our DTF Dryer

We offer three types of dryers: single-section, double-section, and triple-section dryers, each with distinct features and suitable scenarios as below table shonw to you:

Dryer Type	Description	Suitable for	Advantages
Single Section Dryer	Simple structure, compact size	Small scale production, lab testing	✓ Front guide plate, front roasting lamp. ✓ Middle area low-temperature water evaporation. ✓ Rear area high-temperature powder baking. ✓ Prevention of oil and water return. ✓ Low energy consumption, minimal space required.
Double Section Dryer	Advanced temperature control, moderate size	Medium scale production	✓ Front guide plate, front roasting lamp, front baking box (50 cm), high-temperature baking box (100 cm). ✓ Front baking box set at 100℃ for water evaporation, ✓ Rear baking box at 140℃ for powder baking. ✓ The machine can bake simultaneously while color oil and water are returning, ✓ Capable of baking 4 passes with a printing speed of 55 meters per hour.
Three Section Dryer	High capacity, continuous production capability	Large scale production	✓ Front guide plate, front roasting lamp, front baking box, middle baking box, rear baking box. ✓ Front baking box at 90℃ for water evaporation, middle baking box at 120℃ for oil evaporation, and rear baking box at 100℃ for powder baking. ✓ The machine can bake simultaneously while color oil and water are returning。 ✓ capable of baking 4 passes with a printing speed of 55 meters per hour.

Our Advantage Of DTF Dryer

Here we want to highlight the advantages of our dryers, which are one of the solutions to prevent oil back. We offer three types of dryers as detailed in the table below. You can choose based on your budget.

✅Powder Sprinkling:

Rubber plate sprinkling, easy to clean, automatic control of film formation.

✅Quality Inspection:

Front three-quality inspection backlight, inspecting the quality of finished products in real-time.

✅Suction Fan:

Independent control of front and rear dual suction fans, ensuring absolute net grid.

✅Positioning:

Equipped with 4 positioning devices, ensuring stable operation.

✅Winding:

Double winding mechanism, suitable tension, and orderly winding.

✅Exhaust Fan:

Automatic oil and water exhaust fan device, preventing temperature loss in the baking box.

✅Powder Blocking:

Prevents powder residue from absorbing moisture, eliminating the need for frequent powder addition.

✅Control Cabinet:

Built-in control cabinet, machine width of 88 cm, equipped with German Weidmüller meter.

✅Power:

11 lamp tubes, 5 kW power consumption per hour.

Overall, a good dryer can prevent issues such as oil backflow or powder adhesion caused by DTF ink or DTF powder, as well as yellowing or deformation of the DTF transfer film.

Highlighting Our Services

At YXCHTV company, we are your one-stop heat transfer solutions expert. Our comprehensive range of products and services is designed to help you avoid issues like oil back, ensuring the highest quality for your prints.

We provide top-of-the-line dryers and other essential equipment to support your DTF printing process, helping you maintain consistency and reliability in your products. Trust us to deliver solutions that meet your needs and exceed your expectations.

Summary

Avoiding oil back in DTF transfer films is crucial for maintaining print quality. By controlling ink usage, ensuring proper drying, using quality materials, and investing in high-quality equipment, you can prevent this issue.

Partner with us for reliable solutions and expert support in all your heat transfer needs.