Technology suitable for the dyeing of the polyester
With the phenomenon of the so-called “sublimation printing” come up with the Americans. From the USA it was enlarged consequently to the countries of Benelux and in these days we begin with using this technology in our country. What is it dealing about? Sublimation printing is one of the transfer technologies and its basis consists in improvement of 2 physical effects. The first of them is the power of the special ink, which is lay on the transferal paper, to change its solid state to the gaseous immediately. The second physical effect is connected to the power of certain polymers, when thanks to the heating up the material comes to the releasing of their structure and to the opening of the microporuses. Everything behaves so, that the selected motive is by the transfer in the thermo-press carried over from the special two-ply paper to the material, so the pigment dispersed in the gas gets through the microporuses into the structure of the material and after the chilling it is fixed inside of the matter.
Which materials could be used?
The most suitable material for the application of this technology is the 100% polyester (PES). This shines for the intent of the printing with direct ideal properties. It is proof, mechanically and chemically resistant and it is possible to use it by the production of different kind of materials. In limited dimensions it is possible to use other materials too, (for example polyamide, poly acrylate, triacetate etc.) It is recommended to choose for the improvement of the sublimation printing only the materials, which contains at least 65% of one from the above mentioned materials. That means that it is possible to use mixed media too, in the case that they are able to resist the temperature 200°C
The best assertion
From the above mentioned result, that the technology of the sublimation is possible to apply on the usual textile materials. It is suitable to use it by dyeing the carpets, foils and paints, produced on the base of the abovementioned polymers. This, relatively wide spectra of transfer media, with the connection to the large area digital printing and the application of special continuous thermo-press (roll-to-roll), enables photorealistic printing production in the stripes with the length up to 150cm for the purpose of the large area advertisement.
The typical products of the sublimation printing are the sport jerseys. But nowadays it is possible to use this kind of printing by the production process of the outdoor applications, like for example the large area advertisement, the advertisement on the facades, banners, flags, slogan boards, promotional tents and roofs, sunshades , umbrellas etc. Commonplace there are the interior applications like carpets, textile photo wall-covering, printing parts of the promotional systems, replicas, curtains, table-cloth, table mats, coating fabric and many others.
The sublimation printing is also suitable for the clothes and clothes accessories. We could mention sport jerseys, T-shirts, shirts, jackets, aprons, scarves or shawls. It is possible by special applications, which could be for example terry production with specially in-weaved polyester bordure
Technology which comes in the right time
Customers are rightly asking us, why we come up with the new technology and why now. They are wondering to themselves, if there is something bad on the traditional processes of the digital printing? It is really sensitive question because of two reasons.
We can’t forget the directive of European Union REACH. Above all there is its part, which is concerned to the reduction of the usage of organic resolvents and other substances. It is obvious to everyone, that right this fact is reflected in the prices of the expendable properties for traditional technologies. After all it is clear, that new developed inks and materials will take in their prices the costs for the development and research.
There is also the fear of the necessity of big investments to the technologies, which gets away really quickly. But in the case of the choice of the sublimation are there evident accruement of the printing quality and the characteristics of the media. The fear from pretty high seriousness of technologies could be unfounded if the production know-how is managed well. Then it is able to count with the same or even lower production costs.
Advantages of digital sublimation thermo-transfer printing :
- for touch insensible printing
- extremely resistant to abrasion and chemical substances
- low weight and high fastness of used materials
- absolutely square lines and edges of the printing, continuous –tone without screen
- brilliant transmission of the colors thanks to the optical characteristics of the polymers, without light reflection
- the products could be washed and dry-cleaned
- ecologically and healthy – without harmful substances
- functional characteristics – special surface and in-dept lay-out (rainproof, watertight, nonstaining, fireproof)
We remind you, that the traditional technologies don’t dispose of most from abovementioned advantages.
Disadvantages, which we have to face with:
- complicated production process
- unavailability of the production know-how for large area printing
- capital heftiness for the technological complex
- strong lobby of the straight digital solvent and pigment printing
This whole article we could close with the words: “You don’t have reason to be afraid of the sublimation printing to the terry bordure with us!” Matched team and more than five years of experiences with this type of production are the guarantee of the high-quality results.