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    Iron Heart Fall/Winter 2025 Collection Preview - Now Live

    Sanforization - What is it?

    The Resource Centre
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    • GilesG
      Giles
      IHUK Crew
      Joined:

      I was looking for a photo of the Sanforization machine we use, but could not find one.  I did, however, fing a pic of the skewing machine.  Skew is sometimes intentionally introduced into denim to negate the twist is introduced into the fabric when being woven….

      "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

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      • S
        Snowy
        Joined:

        @scroogen:

        Haha I thought that maybe you had…  I thought it would be nice to see a diagram with text saying what the machine is actually doing. Just seeing the text might be a little hard to wrap your head around

        Took me 20 minutes or so to get my head around the text, enjoyed the mental challenge. Appreciate the picture which helped validate it.

        Funny that I've know what sanforization does for years, but until this couldn't understand how. And it's far more complicated than I assumed (I had imagined it was given a single wash or something).

        The Skewing machine looks to be full of pressure/gas gauges. The scale of the machinery is crazy too!

        (Aside 3rd person from the point of view of this photo, love the jacket and jeans, lol.)

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        • GilesG
          Giles
          IHUK Crew
          Joined:

          That is Brigitte, Roger from VMC's wife.  The jeans are Edwin, the jacket is Filson….(anyone see Roger, actually trying to get into the machine?)

          "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

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          • Finn666F
            Finn666
            Joined:

            i only have eyes for Ayumi 😘

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            • S
              Snowy
              Joined:

              resisting urge to hijack 🙂 (Thanks Giles).

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              • ChrisC
                Chris
                Raw and Unwashed
                Joined:

                Who's the guy between Haraki and Ayumi?  Someone from the factory explaining how the skewing machine works?

                Oh, and I enjoyed playing a quick game of "Where's Roger?"  I missed him the first time around.

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                • GilesG
                  Giles
                  IHUK Crew
                  Joined:

                  Yep, he's the factory manager explaining how it all works….

                  "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

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                  • Sugar MountainS
                    Sugar Mountain
                    Joined:

                    I was wondering, Why does Haraki prefer sanforization for the majority of IH denim? Selling one-wash denim would address any issues with shrinkage so I presume there are additional reasons.

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                    • GilesG
                      Giles
                      IHUK Crew
                      Joined:

                      He likes the stability that sanforization gives him.  It allows him to be be more sure of creating consistency in production.  With education (read me, going on and on and on and on about it) he is learning to embrace imperfection…..

                      "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

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                      • ChrisC
                        Chris
                        Raw and Unwashed
                        Joined:

                        From a practical standpoint, I sympathize with Haraki, but I'm glad you've been wearing him down.  Raw is much more interesting in the long run.

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                        • RedStripeR
                          RedStripe
                          Joined:

                          great post, very informative 🙂

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