Achieving Print Durability in DTG Printing: A Technical Overview

DTG (Direct-to-Garment) printing has revolutionized the custom apparel industry, offering a high level of detail and flexibility in design. However, as with any printing method, ensuring the durability of the print is crucial to meeting customer expectations. In this article, we will delve into a recent discussion about the relationship between the amount of white ink used in the underbase and the durability of the print in DTG printing. We will also explore key factors that influence print durability, such as pretreatment, ink selection, and curing techniques.

The Link Between White Ink and Print Durability

One DTG printing enthusiast sought advice from the community regarding the connection between the amount of white ink used in the underbase and the longevity of the print. Through their experimentation, they noticed a significant difference in print durability when comparing two different resolutions: 1440 x 1440 dpi and 1440 x 720 dpi. The lower resolution prints exhibited a "cracked" appearance, even after the first wash.

Expert Insights

Responding to the query, community members highlighted several critical factors contributing to print durability:

1. Pretreatment and Curing: A seasoned DTG printer emphasized that pretreatment and curing techniques play a pivotal role in print durability. Using less ink may impact the binding of the ink to the fabric, affecting longevity. It's essential to ensure that the ink can effectively penetrate the pretreatment and securely adhere to the garment.
2. Ink Percentage Levels: To enhance the opacity of white ink, some users suggested increasing the percentage levels in RIP software, such as AcroRIP. Additionally, employing multiple passes of white ink followed by color can help achieve a vibrant white appearance on the garment.
3. Ink Selection: The choice of ink also matters. Some users recommended KODAK DTG White ink, which has proven to be less prone to clogging. Selecting high-quality ink can contribute to better print durability.
4. Print Quality vs. Layer Thickness: One individual raised concerns about their inability to replicate the thick layer of ink seen on their competitor's T-shirts. Achieving a similar quality may require a balance between layer thickness and print quality.

The Crucial Role of Curing

Another community member emphasized the importance of curing in achieving optimal print durability. Curing is the process of "baking" the ink into the garment, forming cross-links between the garment and the ink. These cross-links are the key to print longevity. Curing can be accomplished using a tunnel dryer, a heat press, or a combination of both methods.

Two critical factors in curing are temperature and time. Correctly setting these parameters ensures that the ink bonds effectively with the fabric, enhancing durability. Failing to achieve proper curing may compromise cross-linking and result in reduced print longevity.

Wash Testing for Calibration

To fine-tune the DTG printing process and ensure print durability, conducting a wash test before delivering garments to customers is highly recommended. This test helps calibrate the machinery involved and assesses the effectiveness of pretreatment, curing, and ink adhesion.

Achieving print durability in DTG printing involves a combination of factors, including pretreatment, ink selection, curing techniques, and calibration through wash testing. While the amount of white ink used is a significant contributor, it is only one piece of the puzzle. By mastering these elements, DTG printers can consistently produce high-quality, long-lasting prints that meet customer expectations.

For more in-depth insights and tutorials on DTG printing and related topics, we invite you to follow our YouTube Channel BCH Technologies and explore our tech blog. If you're in the Greensboro, North Carolina area, don't hesitate to visit us locally for hands-on expertise in DTG printing and other tech-related matters. Happy printing!