Introduction
To achieve the best results, even for complex and detailed designs, each step in the DTF printing process is crucial. And one of the most important uses is the application of DTF powder.
It’s not just the hidden ingredient that bonds the DTF transfer to the substrate, but also results in long-lasting, quality prints. Most beginner printers mess up at first. But mastering these simple steps will let you handle DTF printing like a pro!!
So, let’s explore all about DTF powder and how to use it like a professional. Just a bit of technical understanding and you can easily elevate your prints to smoother, crisper, and longer-lasting results!
What is DTF powder?
DTF powder, also referred to as adhesive powder, is used in the DTF printing process. It is a specially formulated powder that helps stick the print film to the substrate.
When the design has been printed on the print film, and it is still wet, the powder is applied. After that, it is heat-pressed, and the adhesive powder melts. This creates a firm bond between the film and the garment.
So, DTF powder plays a key role not just in the entire printing process but also in achieving professional results. There are three major types of DTF powder, which are as follows:
- TPU (Thermoplastic Polyurethane) is the most commonly used powder material. It is best known for its durability, flexibility, and abrasion resistance.
- PA (Polyamide) is a synthetic polymer used for a balance of strength and elasticity.
- PES (Polyester) provides a rigid finish. It is best for durable printing with good wash resistance in certain applications, but it compromises elasticity for better wear resistance on certain synthetics.
DTF powder also varies in particle size. It’s available as fine, medium, and coarse powder and is used for various applications. Click here for a detailed introduction to DTF powder types.
How to use DTF powder?
To use DTF powder for effective, long-lasting results, the following requirements must be met. Let’s break down those in detail.
Required materials
- DTF Printer: Only specialized DTF printers are used for DTF transfers. Unlike standard printing equipment, this printer prints two layers of inks– CMYK followed by a white base layer, keeping it fresh and wet for powder application.
- DTF Film: For DTF transfers, special DTF film is needed to hold the wet ink until it is heat-pressed.
- DTF ink: The process requires specifically DTF-formulated pigmented inks. White ink plays a crucial role because it will come into direct contact with the powder.
- DTF powder: It is the adhesive powder specifically used for DTF transfers. It usually acts as glue for prints, helping them stick to the fabric for longer without cracking or peeling. The DTF powder particle size must match your design and fabric type.
- Curing oven: The powder is dry after it’s applied. To adhere to the fabric, the powder must be melted into a gel before heat pressing. This is done in the curing oven.
- Heat press: This provides the high pressure and precise temperature (usually 150°C–160°C). It fuses the melted powder resin into the fibers of the garment.
Suitable working environment
DTF powder is hygroscopic in nature. That’s why when working with DTF powders, a proper work environment is essential. Here are some key points that help with the smooth “shaking” process:
- Humidity control: It’s best to maintain humidity between 40% and 60%. An extreme level of humidity– whether high or low– can affect the powder application process.
- Temperature Stability: Keep the temperature at 20°C-25°C (68°F–77°F). High temperatures can cause the powder to soften prematurely. While extremely low temperatures will affect how well the ink accepts the powder.
- Ventilation: When you’re working with DTF powders, your working environment must be well-ventilated. Or otherwise, you can use an air purifier or extractor fans. It is because these powders consist of fine thermoplastic particles and fumes from the curing oven. Breathing them in will eventually lead to health hazards.
- Dust-free zones: Keeping your environment dust-free is also important. Dust particles can settle on the wet film or contaminate the powder after shaking, causing bumps in the final prints.
DTF powder storage method
As stated, DTF powder is the main ingredient for strong adhesion. So, proper storage is essential for maintaining quality and extending shelf life.
- Airtight Containers: It is not recommended to leave the powder open or place it in a loosely rolled bag. When storing the DTF powder, use a sealed plastic tub or a heavy-duty zip-lock bag. Immediately place the remaining powder back after use.
- Silica Gel Packs: Use moisture-absorbing desiccant packets (silica gel) in your storage container. This will ensure that any trapped air stays dry.
- Cool and Dark Location: Storing the containers in a cool and dry place is essential. UV rays from sunlight and heat fluctuations can affect the chemical properties of the TPU (polyurethane) over time.
- “First In, First Out” (FIFO): Try using older batches of powder first and then go for new ones. In general, the shelf life of DTF powders is 6 to 12 months if stored correctly; after that, they often lose adhesion strength.
Complete steps for using DTF powder
Print the design
First, you must print the design on the print film. This is done using a specialized DTF printer with a special high-quality DTF print film. Additionally, only use premium DTF inks for vibrant, crisp print results.
Apply the powder
When you have printed the design and the ink is still wet, it’s time to apply the DTF powder. Sprinkle the DTF powder over the entire design. You can use a sifter or shaker to do it in a controlled manner. Even and proper coverage is key here.
Shake off excess
Leaving only the powder on the design, gently shake off the excess powder from the film using a powder shaker. You can secure it for reuse for next time.
Cure/Melt the powder
In the curing oven, place the film to slightly melt the DTF powder. A low temperature of ~130–150°C must be maintained here. Heat will activate the powder, and it will be ready to be transferred to the garment in the heat press.
Heat press transfer
Finally, place the powdered, sprinkled film onto the fabric, upside down, in the heat press. The temperature should be set to 150–165°C / 300–325°F for approximately 15 seconds. Heat press the design to the fabric. Peel off the film after cooling.
FAQs
What types of DTF powder are there?
There are various types of DTF powders available and used for different applications. Different varieties include TPU (Thermoplastic Polyurethane), PES (Polyester), and PA (Polyamide). At the same time, different particle-sized DTF powders– fine, medium, and coarse– are also available.
Can DTF powder be reused?
Yes, if you have applied excess powder, you can shake it off and reuse it, provided it is not melted or cured and is dust-free.
Can DTF powder be used in any printing technique?
No, DTF powder is a specialized powder specifically formulated for DTF printing. So, it can not be used in other techniques.
Conclusion
DTF powder, an important component of DTF printing, helps prints adhere to fabric perfectly. Though DTF powder application is not complicated, just a bit of technical understanding will help you with long-lasting prints with excellent washability, strength, and durability. This guide solves your problem by explaining how to use the DTF powder and apply it for effective results.
