The Benefits of Using Discharge Screen Printing Ink

April 28, 2023

Introduction

The world of screen printing is vast and varied, with numerous techniques and ink options available. One type of ink that has gained popularity among screen printers is discharge ink. In this article, we'll explore the benefits of using discharge screen printing ink, and how it compares to other methods. So, let's dive in and learn more about this fascinating printing technique. But before we get started please check out this professionally done video by Matt from Printavo:

What is Discharge Screen Printing Ink?

Discharge ink composition

Discharge ink is a unique type of screen printing ink that works by removing the dye from the fabric, rather than laying color on top of it. It consists of a discharge agent, which breaks down the garment's dye, and a water-based pigment, which then replaces the original dye with a new color.

Example of Discharge Printing by ThreadBird.com

Discharge printing process

The discharge printing process starts by applying the discharge ink to the screen, and then pressing it onto the fabric. The discharge agent reacts with the garment's dye and removes it, leaving behind a lightened area in the shape of the design. The pigment is then applied, resulting in a vibrant print.

Ingredients for printing with discharge ink (source - https://psylographics.com/)

Ingredients for printing with discharge ink

Benefits of Using Discharge Screen Printing Ink

Vibrant colors on dark garments

One of the biggest advantages of using discharge ink is its ability to produce vibrant colors on dark garments. Traditional screen printing methods struggle to achieve this without using a thick layer of ink, which can feel heavy and uncomfortable. Discharge ink, on the other hand, replaces the garment's original dye, ensuring bright, vivid colors even on dark fabrics.

Soft-hand feel

Discharge screen printing produces a soft-hand feel on the fabric, as the ink becomes part of the garment. Unlike plastisol, which sits on top of the fabric, discharge ink doesn't create a noticeable layer, resulting in a more comfortable, breathable print.

Eco-friendly option

Discharge ink is water-based and free from PVC and phthalates, making it an eco-friendly alternative to traditional plastisol inks. Additionally, it requires less energy to cure, further reducing its environmental impact.

Detailed designs

Discharge ink is ideal for intricate and detailed designs, as it maintains fine lines and sharp edges. This is because it removes the garment's dye, rather than adding a layer of ink, allowing for greater precision in the final print.

Durability

Discharge screen printing is known for its durability, as the ink becomes part of the fabric. This means the print is less likely to crack or peel over time, ensuring a long-lasting, high-quality finish.

Ease of use

Discharge ink is easy to work with, as it flows smoothly through screens and requires minimal adjustments during the printing process. This makes it an attractive option for screen printers looking to streamline their workflow.

Comparing Discharge Inks with Other Printing Methods

Discharge vs. Plastisol

Plastisol is the most common type of screen printing ink and is known for its durability and vibrancy. However, it has a noticeable layer that sits on top of the fabric, resulting in a heavier, less breathable print. Discharge ink, on the other hand, becomes part of the fabric, resulting in a softer, more comfortable print.

Discharge vs. Water-based

Water-based inks are an eco-friendly option for screen printing, but they struggle to achieve vibrant colors on dark fabrics. Discharge ink, on the other hand, is specifically designed to work on dark garments, resulting in a bright, vivid print. Additionally, discharge ink is known for its durability, making it a more reliable choice for long-lasting prints.

Selecting the Right Discharge Ink for Your Project

There are several factors to consider when selecting the right discharge ink for your project, including the fabric type, desired color, and print size. Some discharge inks work better on certain fabrics, while others are designed to produce specific colors. It's essential to do your research and select the ink that best suits your needs.

Tips for Successful Discharge Screen Printing

Here are some tips to help ensure a successful discharge screen printing project:

Use the right type of fabric for discharge printing
Pre-wash the fabric to remove any sizing or finishing chemicals
Use a high-quality discharge ink
Apply enough ink to ensure full coverage of the design
Use a high mesh screen to achieve fine details
Allow the ink to cure fully before washing

Following these tips will help ensure a high-quality, long-lasting print.

Conclusion

Discharge screen printing ink is a fantastic option for screen printers looking to produce vibrant, long-lasting prints with a soft-hand feel. Its eco-friendly properties, ease of use, and versatility make it a popular choice for both novice and experienced screen printers alike. By following the tips outlined in this article, you can achieve stunning results with discharge ink.

FAQs

Is discharge ink more expensive than other types of screen printing ink?
- Discharge ink can be more expensive than traditional plastisol inks, but the increased durability and eco-friendliness make it a worthwhile investment.
Can discharge ink work on all types of fabrics?
- Discharge ink works best on 100% cotton or cotton/polyester blends. It may not work well on synthetic fabrics.
How long does discharge ink last?
- Discharge ink is known for its durability and can last for many years with proper care.
Can I achieve fine details with discharge ink?
- Yes, discharge ink is ideal for producing intricate and detailed designs.
Is discharge ink difficult to use?
- Discharge ink is easy to work with and requires minimal adjustments during the printing process.