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How We Make Our Jeans: Washing and Treatments

In this third chapter of our “how we make our jeans” three-part series, we take a look at where the magic really happens: the washing and treatment processes.

Jeans Intelligence | 06.03.2015

If you’ve read the two first chapters of this series, you will know that we think of jeans making in three stages. First, denim is made from cotton. Next, that denim is sewn into jeans. In this final chapter we cover the last stage; washing and laundry treatments. This is our favourite part.

Denim only really comes to life when it’s faded. This happens naturally when you wear it (learn more about how and why here). However, getting a good fade can take years. Luckily, modern treatment processes allow us to speed up the process, and with innovative technologies and old-fashioned craftsmanship we have become experts in recreating authentically worn in jeans.

How we make JACK & JONES jeans - washing and treatment - the laundry room

Denim’s Character Really Shines Through In the Laundry Room

The natural fade can be replicated in many ways. Depending on the desired outcome, we work with a number of different treatments. Each pair can go through as many as 16 different manual operations.

Overall Fading: Stonewashing and Ozone Treatment

For an even all-over fade, we use both traditional washing, either with or without the small pumice stones, and ozone treatment. The latter is an innovative laundry method in which a gas, in this case ozone, replaces water to lighten the colour of the denim. Ozone laundering, which is a cornerstone of our Low Impact Denim initiative, helps us reach our goals of reducing water and energy consumption by at least 40% and 30%, respectively, in the treatment process.

How we make JACK & JONES jeans - washing and treatment - stonewashing How we make JACK & JONES jeans - washing and treatment - oxidiser spray
How we make JACK & JONES jeans - washing and treatment - grinding

Local Fades: Bleaching, Sanding, and New Innovations

For local fades, a bleaching agent can be applied with brush or spray. The process requires meticulousness and is repeated until the perfect result is achieved. One of the most recognisable treatments is the moustache effect on the thighs of the jeans. These characteristic lines, also known as whiskers, are normally made with sandpaper or laser.

As you’ve probably realised by now, we go a long way to recreate the naturally worn in look in our jeans. We even replicate the 3D-effect of the natural creases; a waxy fluid substance called resin is applied to the jeans to keep creases formed on mannequins in place. The jeans go through a large, industrial oven at 160°C which hardens the resin.

How we make JACK & JONES jeans - washing and treatment - the leather patch
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The Final Touch: Trimming

Even though the processes may be the same, no two jeans will look alike in the end; that’s the beauty of it all! The jeans have been given their signature looks and the only things missing are the very last touch. This is added during the trimming and finishing step where the remaining patches, buttons, and hangtags are attached and the jeans are packed in boxes.

Key Points of the Entire Process

There you have it; a pair of JACK & JONES jeans is created. Let’s make a quick recap of what we’ve covered in this series:

– First, the denim is made. Cotton from different regions (with different qualities) is blended, spun, dyed, woven, and pre-shrunk.

– Next, the unwashed denim is cut (based on computerised patterns) and stitched into jeans.

– Finally, as you’ve seen in this article, the jeans are washed and treated at industrial laundries to get the unique, worn in look that most consumers prefer. Unwashed jeans basically skip this step and go directly to the final trimming step.

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