From the Sector

Polyester has been the cornerstone of the textile printing industry for decades. Its compatibility with the digital sublimation process—a cost-effective, simple technology—has driven exponential growth in polyester printing. However, the very characteristics that make polyester well suited for sublimation printing render this printing technique unsuitable for other materials, such as cotton and some blended fibres, leaving a significant gap in the market.

This gap was, until recently, partially filled by direct-to-textile printing. However, this method requires substantial initial investments in equipment and heavily relies on the time- and resource-consuming pre- and post-processing of fabrics to ensure colourfastness, colour accuracy, and compatibility with different substrates. Consequently, a need arose for a more sustainable and cost-effective solution that could cater to a wider range of textiles.

In response to this demand, Mimaki spent six years developing a breakthrough technology, TRAPIS, a simple two-step textile transfer printing solution, consisting of only an inkjet printer and a high-pressure calender. The design of choice is printed by the inkjet printer onto the company’s groundbreaking Texcol® pigment ink transfer paper. This is then transferred to the application via the calender.

Entirely removing the treatment stages means that printing on non-polyester materials has gone from an expensive and time-consuming task to one that is simple, cost-efficient and more sustainable.

Ideal for home textiles and soft signage which often require vibrant colours but varied materials, this technology gives printers the ability to print on a wide variety of materials, including natural fibres like cotton and silk without losing stretchability or colourfastness. All this can be done with just one type of ink, making the process flexible and adaptable to customer demands.  

The pre-treatment and washing of the fabric is often needed in digital dye printing, producing a significant amount of wastewater in the process. TRAPIS eliminates those stages altogether and is almost entirely waterless, saving around 14.5 litres per square metre of water, an almost 90% decrease in comparison to digital dye printing .

Additionally, this eliminates the need for wastewater treatment facilities, which can be both expensive and constrictive when it comes to where the solution is installed.

International technology group ANDRITZ supplied and recently commissioned a tearing line at Sealy Australia’s mattress manufacturing plant in Brisbane. Versatile technology enables Sealy to recycle post-consumer and post-industrial textile waste in one line.

Sealy is a leading Australian manufacturer of high-quality mattresses, producing 1,000 mattresses per day at its Brisbane plant. To replace some of the virgin fiber feedstock with more sustainable recycled fibers, the company installed an ANDRITZ tearing line at the plant.

The ANDRITZ reXline tearing can process up to 1,200 kg/h of cotton denim waste and up to 800 kg/h of quilt waste. The 6-cylinder Exel module allows flexible switching between the two types of material. The combination of the reXline and the ANDRITZ airfelt line, which has been in operation at the Brisbane plant since 2008, enables Sealy to process large amounts of waste into new mattresses ready for sale around the world.

“With our new line, we are taking a significant step towards circularity by making new mattresses from textile waste that would otherwise be burnt or landfilled,” says Shaun Guest, Fiber Plant Factory Manager of Sealy Australia.”