Semi-synthetic fibers and syntethic fibers
Semi-synthetic fibers, such as Viscose and Modal, are made from organic polymers (like cellulose), which are treated by a reagent.
Synthetic fibers, such as Acrylic fibers and Polyester fibers, are made from synthesized polymers, this means that the polymer doesn’t exist in nature but it’s synthesized in lab from an organic compound (petroleum derived) thanks to polymerization chemical reactions.
When we talk about Viscose we mean a semi-synthetic fibers made from cellulose. In this case fibers are made from cotton linters✳︎, unlike Modal that is made starting from beechwood cellulose.
The Viscose manufacturing system reproduces the silkworm that changes mulberry cellulose in two thin silk flosses. Cellulose liquid solution is forced through a nozzle that is full of minuscule holes. The fiber is extruded from each one of these holes and finally the fiber solidifies in a liquid. The number of holes in the nozzle goes from one thousand to twenty thousand and each of them simultaneously produces a fiber of the exact same section.
Finally these fibers are put together through twisting in order to obtain a thread of the required diameter.
✳︎Linter makes up the enveloping part of cotton seed after flock harvest.
Viscose features make it a good fiber, especially blended in with other fibers, that can exalt Viscose properties. For example a Viscose and Polyester mix makes this fabric more elastic, stranger and more insulating. Viscose is a light fiber, silky to the touch and to the eye, even quite resistant to wear and tear and anti-static.
What’s Micromodal fabric
You have probably heard of it before. Nowadays it’s quite easy to find it in many things, especially in underwear. Do you really know what Micromodal is? It’s thought that Micromodal, like Viscose, is a synthetic fiber, which cause allergies and perspiration. Truth is different.
Modal is a semi-synthetic fiber, not synthetic, which was patented by the Austrian company Lenzing Modal®✳︎. It’s totally biodegradable and natural. Its extraction and production are made without using any synthetic components. It’s used only forestry wood. Modal comes from beech wood that gives, after being processed, a really light fiber. Let’s think that 10000 metres of Modal fiber weight just 1 gram. Less than silk! So Micromodal is extremely light, anallergic, anti-static. Besides it it has a really high hygroscopic index: absorbes humidity optimally and leaves your skin dry. These features make Micromodal fabric a suitable fiber for summer clothing.
✳︎”European ECO-Label” was bestowed on Lenzing S.p.A.. That confirm Lenzing Modal® is totally chlorine and toxic substances free and it’s constituted only by eco-friendly wood.
Modal and Micromodal fabric
Modal and Micromodal are the same fiber, they are made from the same source and in the same way. The only difference is about size: Micromodal fiber is thinner and lighter than the Modal one, and its width is 6 micron. For this reason Micromodal fabric is considered a microfiber. This feature makes Micromodal lighter, and even through its weft is thicken, it’s able to keep the same transpiring ability as Modal.
Pigment printing and digital printing
Pigment printing is made using drums or squares, that are called matrices, the color is located inside these matrices. Once colors are ready, the fabric is put on a long conveyor belt. Matrices are above it and divided by colors.
Matrices are pressed on fabric and they print it through repeated movements. It’s the same method as mimeograph.
The last passage is called heat setting, a method needed to fix colors on fabric, in order to make it more resistant to stress.
Digital printing is made by using an electronic printer, this one is similar to a normal inkjet printer. The ink is directly poured on fabric by print heads.
Before being able to print it’s necessary to treat the fabric to make colors stick better to the fiber.
Once fabric is printed it’s used heat setting to ensure the maximum adhesion of color.
In the end fabric goes in special washing machines in which the exceeding color is washed away and after that it’s dried.
Digital printing allow colors to be brighter and neater and thanks to its versatility it offers more chances for customization. Color, easily sticking to the fiber, makes unique and high-quality chromatic effects.
Pigment printing is more suitable for bigger productions of hip but cheaper products.
International fibers codes chart
Here there is a link to a fibers chart in which you’ll find all the abbreviations that have been used in our website (underlying address link to Unione Industriale Pratese site):
Products labels present the full name of each fiber, as laws decree, therefore they will be fully understandable.