How to decatize fabric: Complete and practical guide

Welcome everyone! Today, let's dive into the world of fabric decatizing, an essential step in textile manufacturing. Let's discover together the details of this process: what is decatizing, why is it important to decatize a fabric, which fabrics undergo this transformation, and what methods are used? We will answer these questions in detail. Make yourself comfortable, we'll get started right away!

What does “decatizing a fabric” mean?

Wondering what it means to " decatize a fabric "? Well, over time, this step in sewing has become more important. Originally, decatizing meant " removing the cati from the fabric ." The cati is the finish that fixes the weave. It's a bit like a protective layer , like armor for your fabric. By removing it, you allow the fabric to return to its original nature, more supple, freer. It's as if your fabric is breathing a real sigh of relief. Nowadays, decatizing more commonly means " preparing the fabric ," just before starting your most beautiful creation.

Why decatize a fabric?

Why on earth would we decide to remove this precious armor? Well, for several reasons! Let’s look at it in more detail:

Prevent potential shrinkage in first wash

One of the main reasons to decatize fabric is because of the potential shrinkage during the first wash . Many fabrics have a tendency to shrink, which could compromise the size of your finished project. By decatizing beforehand , you minimize this risk and ensure that your creation retains its original dimensions, even after washing . For more information on fabric care, visit our dedicated article .

Remove the finish that the manufacturer put on the fabric to enhance it.

As explained above, the term "decat" originates from the idea of ​​removing the "cati", that is, the finish that the manufacturer applies to the fabric . This finish is designed to improve the appearance of the textile and give it a neater look. However, in sewing, it can be problematic , as it can hinder the manipulation of the fabric, making it more difficult to work with the pattern and seams. By decatizing your fabric, you remove this finish and thus make your project easier to make .

Your fabric may bleed, that is, fade

Another important aspect of decatizing is preventing fabric from fading . Some fabrics tend to bleed, or lose their color, during the first wash . This can lead to unwanted variations in the color of your project. Decatizing minimizes this risk by removing unstable pigments , ensuring that your creation retains its bright, vibrant colors.

Clean the fabric of dust and microorganisms

In addition to the benefits mentioned above, decatizing also provides a deep cleaning of your fabric . Textiles can accumulate dust, microorganisms, and other impurities before they reach your expert hands. By performing decatizing, you remove these unwanted elements, which contributes to the quality of your project and the durability of the fabric.

Why not decatize a fabric?

But be careful, not everyone decides to remove this armor . A tailor once told us: " In my opinion, the primer has some undeniable advantages. Thanks to it, the fabric remains stable when placing the pattern. In addition, it guarantees a clean cut and makes my job much easier when it is time to assemble ."

We can also mention the case of natural fiber fabrics that are already decrepit in the factory, ready to use! These are made of a mixture of fibers that make them impervious to shrinkage. These fabrics also have several other advantages, we present them to you right here in our article on the advantages of natural fabrics .

Are you not sure if the fabric has already been degraded and you want it to be? No worries, our tailor friend has one last piece of advice for you: " If you still have any doubts, don't take any risks! Simply test a small piece of fabric in the upcoming washing conditions. If it survives, then you can confidently embark on your new project . "

Which fabrics to decate?

Before we look at the fabrics that can benefit from decatizing, it is essential to remember that this step is not mandatory in all sewing projects . As previously explained by our dear seamstress, decatizing is an option that you can choose to apply if you wish, depending on your needs and the specific properties of your fabrics.

1. Natural fiber fabrics

Natural fiber fabrics are often treated with a finish to protect them during shipping and storage . Before using them in a sewing project, it is recommended to decatize these fabrics to allow them to regain their natural suppleness. Removing the finish will ensure a better drape and a more elegant final result .

2. Artificial fibers made from natural fibers

Viscose is an example of a man-made fiber created from natural raw materials. Although viscose has many of the same qualities as natural fibers, it is often treated with a finish to improve its durability and stability . Therefore, decatizing is also recommended for viscose. By removing this finish, you prepare the fabric to better absorb dyes and ensure an optimal final result.

Which fabrics should not be decatized?

On the other hand, synthetic fibers, such as polyester , do not need this treatment. And yes, trying to decatize something that cannot shrink - it has no effect. And of course, do not try to decatize synthetic imitations of leather or non-washable textiles , otherwise, you risk causing undesirable consequences...

The different ways to decatize a fabric

Now, let's move on to the decatizing methods. There are of course several ways to do this, here they are:

• Hand wash
• Washing machine
• Iron
• Steam generator

Let's look at this in a little more detail.

Hand wash

Hand washing is the gentlest way to decate fabric . To do this, fill a sink or basin with cool or warm water, add a mild detergent, and then agitate the water to create a soapy solution. Then, gently submerge the shrunken garment in the water and let it soak for about 15 minutes. Avoid rubbing or wringing the fabric, as this can further damage it. After soaking, rinse the garment in clean water, gently squeeze out excess water, and then gently stretch it back into shape. Finally, lay it flat to dry.

Washing machine following manufacturer's recommendations

If you choose to machine decate a fabric, it is essential to follow the manufacturer's instructions to avoid further shrinkage . Be sure to set the machine to the gentlest wash cycle and the recommended water temperature. Use a mild detergent and avoid vigorous spin cycles. After washing, immediately remove the garment from the machine and gently stretch it to reform it. Hang it to dry, avoiding wringing.

Using an iron

This method is great for fabrics that can handle heat . It’s also great for impatient people, as it’s much quicker! Place a damp towel over the shrunken fabric, then steam iron on a low heat setting. The steam will soften the fibers, and you can gently stretch the fabric back to its original size. Be sure not to use too high a temperature, as this can damage the fabric .

Using a steam generator

The steam generator offers another option for decatizing fabric. In reality, it is an improved version of iron decatizing . Thanks to its increased steam output, it is more effective than the traditional iron. To do this, you simply need to set the steam generator to the recommended temperature for the type of fabric you are using, then direct the steam on the shrunken area while gently stretching the fabric. Make sure to maintain an appropriate distance between the steam generator and the fabric to avoid any risk of damage.

To conclude

In conclusion, decatizing is like a waltz between the art and science of sewing . It is a crucial step for some fabrics, while others prefer to keep their protective "armor". Choose wisely, and may your fabric dance gracefully on your next sewing project. On that note, we'll see you very soon for a new article! In the meantime, if your thirst for reading has not faded, we have other blog articles just waiting for you!