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Light Garment Direct-to-Garment Pretreat for Polyester, Blends and Natural Garments

For years, the printing on 100% polyester garments has not been possible with direct-to-garment (dtg) inks. This is because dtg inks are waterbased inks designed to bind to natural fabrics that have fibers that are loosely wound. Synthetic garments, like polyester garments, are made with tightly wounded fibers that are not as absorbent as natural fibers. Thus, the waterbased dtg inks typically will bleed and wash out on polyester garments. This makes the prints look very faded after the first wash. A similar effect also happens on 50/50 blend garments as well.

This is where DTG Pretreat fluid comes in. This fluid is specifically designed to work with CMYK inks to provide a receptive coating on the polyester and 50/50 blend garments or substrates. This means a DTG printer can use their printers to print on the following type of garments / products:

100% Polyester Garments Blend Garments (especially hoodies and other types of sweatshirts) Mouse Pads Can Coolers Polyester Flags Tote Bags and many more items.

DTG Pretreat can also be used on 100% cotton garments to provide for a slightly better colors (e.g. especially providing richer blacks and brighter reds) and better washability.  It is recommended to try the pretreat fluid on cotton garments by printing a color chart and compare it to a color chart printed on a non-pretreated 100% cotton garment.  Then perform a wash test on both garments.  This will allow the customer to determine when it would be beneficial to use the pretreat fluid and when it would be acceptable not to.

Step by Step Instructions under Features

Step-by-Step Instructions:

Step #1: Using a hand-held spray bottle, apply the appropriate amount of pretreatment fluid depending on the fabric content for a full 14” x 16” print. For smaller areas, apply a proportional amount of pretreat fluid based on the size of the printable area. You will want to overspray the area a little bit to make sure the pretreatment covers the printable area when loaded on the dtg printer.

* 100% Cotton – 13 to 15 grams * 50/50 Blends – 16 to 18 grams * 100% Polyester – 18 to 20 grams

Step #2: Heat press the garment to 20-30 seconds at 356 degrees F (or approximately 25-35 seconds for 330 degrees F). Changes in the time and temperature may be used depending on the results of the wash test.

Step #3: Print and Cure the garment using the recommended settings for your dtg printer.