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Dying Processes

Sustainability at Iron Heart
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  • A
    Alex
    IHUK Crew
    Joined: 28 Sept 2009

    DYING PROCESSES
    At Iron Heart, we use a variety of different dyes and dyeing techniques. Which dye and which method we use is dictated by how deep, bright and fast we want the colour to be. No matter which method we use, they all use a large amount of water, CO2 and energy.

    Currently we are looking very closely at our use of sulphur dyeing, either the dyeing of the fabric or the overdyeing of garments post construction. To make the colour particles bond to the surface of the fabric sodium sulphide is used as a reducing agent, harmful gases are released in the process and the wastewater produced is harmful to the environment.

    Iron Heart is actively researching alternatives to using sodium sulphide as a reducing agent and aims to have phased out the use of sulphur dyes by the end of 2023.

    Most, but not all, Iron Heart garments are one-washed post production, to remove shrinkage and ensure the garment exits the process clean and fresh. However, unlike many other jeans manufacturers, we do not use any water or chemicals to "distress" or give a worn/aged look to any of our garments. Doing this massively reduces the amount of water used and also reduces the amount of dye that ends up in any given watercourse.

    last edited by 26 Aug 2021, 15:09 1 Reply Last reply Reply Quote 3
    • D
      denim-dawg
      Iron Heart Deity
      Joined: 20 Oct 2021

      Amazing ✊🏼

      last edited by 10 Mar 2023, 22:53 1 Reply Last reply Reply Quote 0
      • M
        mclaincausey
        見習いボス
        Joined: 12 Apr 2013

        So the IHSH-07 in its current form could become a collectible.

        Think it, be it.

        last edited by 10 Mar 2023, 23:35 T 1 Reply Last reply 11 Mar 2023, 10:10 Reply Quote 0
        • ?
          A Former User
          Joined:

          @Alex great info

          last edited by 11 Mar 2023, 10:01 1 Reply Last reply Reply Quote 0
          • T
            T4920
            見習いボス
            @mclaincausey
            Joined: 27 Apr 2022

            @mclaincausey I'm probably being dim, but how does this relate to the IHSH-07? That's the Hickory Western right?

            “𝑁𝑒𝑣𝑒𝑟 𝑙𝑒𝑡 𝑡ℎ𝑒 𝑓𝑢𝑡𝑢𝑟𝑒 𝑑𝑖𝑠𝑡𝑢𝑟𝑏 𝑦𝑜𝑢. 𝑌𝑜𝑢 𝑤𝑖𝑙𝑙 𝑚𝑒𝑒𝑡 𝑖𝑡, 𝑖𝑓 𝑦𝑜𝑢 ℎ𝑎𝑣𝑒 𝑡𝑜, 𝑤𝑖𝑡ℎ 𝑡ℎ𝑒 𝑠𝑎𝑚𝑒 𝑤𝑒𝑎𝑝𝑜𝑛𝑠 𝑜𝑓 𝑟𝑒𝑎𝑠𝑜𝑛 𝑤ℎ𝑖𝑐ℎ 𝑡𝑜𝑑𝑎𝑦 𝑎𝑟𝑚 𝑦𝑜𝑢 𝑎𝑔𝑎𝑖𝑛𝑠𝑡 𝑡ℎ𝑒 𝑝𝑟𝑒𝑠𝑒𝑛𝑡.”

            last edited by T4920 3 Nov 2023, 11:54 11 Mar 2023, 10:10 1 Reply Last reply Reply Quote 0
            • M
              mclaincausey
              見習いボス
              Joined: 12 Apr 2013

              It is @T4920 ; it is sulphur dyed (typo here I see):

              A647588A-1907-4457-AA4F-7855728A46B6.jpeg

              Think it, be it.

              last edited by mclaincausey 3 Nov 2023, 13:30 11 Mar 2023, 13:27 T 1 Reply Last reply 11 Mar 2023, 13:56 Reply Quote 0
              • T
                T4920
                見習いボス
                @mclaincausey
                Joined: 27 Apr 2022

                @mclaincausey ahhh I thought sulphur dyed always equalled black, silly me!

                “𝑁𝑒𝑣𝑒𝑟 𝑙𝑒𝑡 𝑡ℎ𝑒 𝑓𝑢𝑡𝑢𝑟𝑒 𝑑𝑖𝑠𝑡𝑢𝑟𝑏 𝑦𝑜𝑢. 𝑌𝑜𝑢 𝑤𝑖𝑙𝑙 𝑚𝑒𝑒𝑡 𝑖𝑡, 𝑖𝑓 𝑦𝑜𝑢 ℎ𝑎𝑣𝑒 𝑡𝑜, 𝑤𝑖𝑡ℎ 𝑡ℎ𝑒 𝑠𝑎𝑚𝑒 𝑤𝑒𝑎𝑝𝑜𝑛𝑠 𝑜𝑓 𝑟𝑒𝑎𝑠𝑜𝑛 𝑤ℎ𝑖𝑐ℎ 𝑡𝑜𝑑𝑎𝑦 𝑎𝑟𝑚 𝑦𝑜𝑢 𝑎𝑔𝑎𝑖𝑛𝑠𝑡 𝑡ℎ𝑒 𝑝𝑟𝑒𝑠𝑒𝑛𝑡.”

                last edited by 11 Mar 2023, 13:56 1 Reply Last reply Reply Quote 0
                • M
                  Mizmazzle
                  見習いボス
                  Joined: 29 Jun 2021

                  This is interesting. So overdyed garments always use sulphur as well…did not know this. I applaud IH for placing their environmental responsibilities as a priority. This makes me love the brand even more and proud to be contributing to an organization with its head on straight.

                  In the easy chair with my boots on, melted whiskey in my hand. Could'na been asleep for more than three hours...time to go to work again...

                  last edited by 11 Mar 2023, 14:12 G 1 Reply Last reply 11 Mar 2023, 17:47 Reply Quote 0
                  • G
                    Giles
                    IHUK Crew
                    @Mizmazzle
                    Joined: 22 Sept 2009

                    @Mizmazzle said in Dying Processes:

                    This is interesting. So overdyed garments always use sulphur as well…

                    No, overdyeing can be done in lots of different ways.

                    One of them, and currently the most pleasing from an evolution point of view is sulphur based, but it is challenging environmentally, and the cost of using sulpur is getting prohibitive because cleaning up waste-product to make it environmentally kind, is increasing massively.

                    So we are looking at alternatives to using sulphur in all our dyeing techniques.

                    "OK face up to it - you're useless but generally pretty honest and straightforward . . . it's a rare combination of qualities that I have come to admire in you" - Geo 2011

                    last edited by 11 Mar 2023, 17:47 T 1 Reply Last reply 11 Mar 2023, 17:55 Reply Quote 1
                    • T
                      T4920
                      見習いボス
                      @Giles
                      Joined: 27 Apr 2022

                      @Giles is there a reason that other sulphur dyed garments I own (looking at you RGT) have a distinct smell to them, whereas it's never been an issue with my IH gear. Do they undergo any additional treatment to alleviate this?

                      “𝑁𝑒𝑣𝑒𝑟 𝑙𝑒𝑡 𝑡ℎ𝑒 𝑓𝑢𝑡𝑢𝑟𝑒 𝑑𝑖𝑠𝑡𝑢𝑟𝑏 𝑦𝑜𝑢. 𝑌𝑜𝑢 𝑤𝑖𝑙𝑙 𝑚𝑒𝑒𝑡 𝑖𝑡, 𝑖𝑓 𝑦𝑜𝑢 ℎ𝑎𝑣𝑒 𝑡𝑜, 𝑤𝑖𝑡ℎ 𝑡ℎ𝑒 𝑠𝑎𝑚𝑒 𝑤𝑒𝑎𝑝𝑜𝑛𝑠 𝑜𝑓 𝑟𝑒𝑎𝑠𝑜𝑛 𝑤ℎ𝑖𝑐ℎ 𝑡𝑜𝑑𝑎𝑦 𝑎𝑟𝑚 𝑦𝑜𝑢 𝑎𝑔𝑎𝑖𝑛𝑠𝑡 𝑡ℎ𝑒 𝑝𝑟𝑒𝑠𝑒𝑛𝑡.”

                      last edited by 11 Mar 2023, 17:55 1 Reply Last reply Reply Quote 0
                      • G
                        Giles
                        IHUK Crew
                        Joined: 22 Sept 2009

                        I do not know, I will try and find out - on the Shinkansen to Kojima at ATM....

                        "OK face up to it - you're useless but generally pretty honest and straightforward . . . it's a rare combination of qualities that I have come to admire in you" - Geo 2011

                        last edited by 12 Mar 2023, 04:11 1 Reply Last reply Reply Quote 0
                        • D
                          Daniel 0
                          Joined: 12 Mar 2023
                          This post is deleted!
                          last edited by 12 Mar 2023, 23:59 1 Reply Last reply Reply Quote 0
                          • H
                            HeavyGenes
                            Raw and Unwashed
                            Joined: 4 Jan 2011

                            I came across this article. Speaking on Indican and sustainability of the denim industry.

                            https://abcnews.go.com/amp/US/new-discovery-blue-jean-dyeing-denim-sustainability-study/story?id=107564309

                            One excerpt from the article…
                            “Researchers found that forming indigo directly in the yarn through the engineering of an enzyme called indican eliminates the requirement for reducing chemicals while still ending up as the color indigo.”

                            I’m clueless about this whole process but it leads me to believe the indigo color achieved through this process would not fade. As it would not be a “dye” in the sense of dye adhering to the fabric but rather the enzyme chemically changing the color of the fabric. Maybe someone in the know can elaborate.

                            Cheers! 

                            last edited by 2 Mar 2024, 21:31 1 Reply Last reply Reply Quote 0
                            • C
                              CosmoSix5
                              Haraki san Prodigy
                              Joined: 4 Sept 2023

                              If shooting millions of even hundreds of thousands of these garments out id see the possibility of worry. The cost of paying the government penalties to do it may be a good reason. Gotta find a way to keep those buttons oxidized though. So much better looking. I had the 507blod sent in error. Hated the fit/look but those buttons almost made me deal with it. Used the opportunity to cancel the 526blod just for the fact it wasn't sulphur dyed.

                              WTB Brund Flannel 2 or 3x

                              last edited by 27 Jul 2024, 18:33 1 Reply Last reply Reply Quote 0
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