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    Iron Heart Fall/Winter 2025 Live Reveal - Thursday 12th of June at 1700BST

    Dying Processes

    Sustainability at Iron Heart
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    • AlexA
      Alex
      IHUK Crew
      Joined:

      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 1 Reply Last reply Reply Quote 3
      • denim-dawgD
        denim-dawg
        Iron Heart Deity
        Joined:

        Amazing ✊🏼

        last edited by 1 Reply Last reply Reply Quote 0
        • mclaincauseyM
          mclaincausey
          見習いボス
          Joined:

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

          Think it, be it.

          last edited by T4920T 1 Reply Last reply Reply Quote 0
          • ?
            A Former User
            Joined:

            @Alex great info

            last edited by 1 Reply Last reply Reply Quote 0
            • T4920T
              T4920
              見習いボス
              @mclaincausey
              Joined:

              @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 1 Reply Last reply Reply Quote 0
              • mclaincauseyM
                mclaincausey
                見習いボス
                Joined:

                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 T4920T 1 Reply Last reply Reply Quote 0
                • T4920T
                  T4920
                  見習いボス
                  @mclaincausey
                  Joined:

                  @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 1 Reply Last reply Reply Quote 0
                  • MizmazzleM
                    Mizmazzle
                    見習いボス
                    Joined:

                    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 GilesG 1 Reply Last reply Reply Quote 0
                    • GilesG
                      Giles
                      IHUK Crew
                      @Mizmazzle
                      Joined:

                      @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 T4920T 1 Reply Last reply Reply Quote 1
                      • T4920T
                        T4920
                        見習いボス
                        @Giles
                        Joined:

                        @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 1 Reply Last reply Reply Quote 0
                        • GilesG
                          Giles
                          IHUK Crew
                          Joined:

                          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 1 Reply Last reply Reply Quote 0
                          • Daniel 0D
                            Daniel 0
                            Joined:
                            This post is deleted!
                            last edited by 1 Reply Last reply Reply Quote 0
                            • HeavyGenesH
                              HeavyGenes
                              Raw and Unwashed
                              Joined:

                              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 1 Reply Last reply Reply Quote 0
                              • CosmoSix5C
                                CosmoSix5
                                Haraki san Prodigy
                                Joined:

                                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.

                                John 1 1-3 ❤️♥️❤️♥️

                                last edited by 1 Reply Last reply Reply Quote 0
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