Use a base for light or dark fabrics

It may be necessary to use a base depending on the color of the polyester chosen. This is because different inks act differently on light or dark fabric.

To prevent dye migration, use a white or gray base background. White in a single application is applied to stop the migration of dyes. Once the base is laid, any color of plastisol can be applied to it. At the opposite pole, a gray base is thicker and dries at a lower temperature, which helps to slow down the migration of dyes. Because it is thicker, the gray base works best on sportswear.

Pay attention to the drying process of the dyes
Before the final drying, the dyes may migrate if you heat the fabric too much under flash application. Apply flash to the base image only as long as the image needs to be fixed.

Regardless of the inks you use for screen printing on polyester, you will need to test the inks on the chosen fabrics to avoid color migration.

Use special paper to maintain the design during the drying process
Because it is a synthetic fiber, polyester requires the use of a sheet during the application and curing process. A sheet may be a piece of paper or similar material placed under the design, inside the garment before printing. The poyiester fabric has many air gaps between the threads, allowing ink to pass through. This occurs most often when you print white ink on dark polyester fabrics.

Learning a new technique is always challenging, so we make sure we do more tests. If you want to print screen printing on polyester, consider the skills of our workshop, as well as over 13 years of experience in the field. We are waiting for you to give life to your projects!

Tips for printing on polyester

There is no one option that suits everyone when it comes to choosing the type of polyester you want to print. Different blends, from polyester / cotton to polyester / viscose, have different characteristics when screen printed . Polyester is renowned for its wrinkle resistance, durability and hypoallergenic qualities. Although a synthetic fiber, polyester is naturally resistant to dyeing and resistant to shrinkage, providing a magical combination of comfort. Here are some tips for printing on polyester:

Choose the right polyester for screen printing
Different types of polyester blends have their own challenges. Depending on the fiber ratio, polyester mixed with other fibers may prevent the ink from being properly absorbed. For example, during drying, a migration of paint may occur on a mixture of 50/50 polyester and cotton .

To avoid migrating dyes, be sure to choose the right polyester blend for the project and, while drying, avoid overheating the fabric. A 100% polyester blend will allow the ink to set well, while anything below 65% polyester can cause hardening problems.

Choose the right paint
Working with polyester requires experimentation with ink before moving to mass production.

There are several types of inks. Plastisol ink is synthetic and shiny, water-based ink is more environmentally friendly and softer to the touch. This is because water-based ink is absorbed into the fabric. The plasticine sits on top of the fabric creating a feeling of stiffness.

Due to the resistance of polyester to moisture absorption, water-based inks require you to use a base. Unlike plastisol ink, water-based inks dry faster.