Green bags for groceries, and promotional bags for specialty shopping, are becoming more and more common. And the planet is thanking us all for it – don’t doubt that! But it means that the bags that do something different will really be the ones that stand out from the crowd, and serve the best marketing and branding purposes. Heat transfer printing is one of the technologies that green bag and promotional bag manufacturers use to get colourful, realistic, stand-out results – we look at the process and how it differs from the other common printing methods for environmental bags.
The easiest way to understand heat transfer printing is to think of the iron-on transfers you might have put on your tshirts while at school – the type that are used for scouts and guides badges, sports emblems and school crests. The printing is actually done onto a special commercial heat transfer paper, and although it works by the same method as home iron-ons, the quality is completely different. Commercial heat transfer paper, applied with a heat press (which we’ll explain in a second), does not peel, bleed colours, or fade. The bags are as washable as non-printed or silk-screened products.
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