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Thread: Heatsealing with an iron ;)

  1. #1
    Senior Member simonsk8r's Avatar
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    Heatsealing with an iron ;)

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Not the most exciting of topics haha, but just I'd share how I did it.

    About a year ago I ordered 100 one-way valve bags, but didn't realise they were the sort that needed heatsealing! Read about people using an iron to heat seal them if you didn't have a proper heat sealer, so this is how it went down!

    I lay a towel on the ground (also had a hardcover book underneath it just for a firm surface), and lay the bag on there (pic 1).

    Turned the iron on (just a dry iron, didn't add water) to about midway on the heat setting. Initially I was heatsealing too low on the bag where the ziplock and plastic was, and only found out later that THAT wasn't a great idea, ended up semi melting and warping the plastic which led to holes/rips in the bag, defeating the purpose of it.

    So pics 2, 3, and 4 show how NOT to do it, and what the dire consequences are in pic 5 and 6.

    After destroying a few bags haha, I started ironing up higher away from where the plastic would be, so heating only the paper bag. Also I heard people ironing it with baking paper across the bag, I initially did this but upon testing without it found I didn't need it. Bag didn't catch on fire so all good!

    So pics 7, 8 and 9 show my final method. I held the middle of the iron at the top third (JUST BEFORE the "Pull tab to open" part) for about 5-10 seconds, and did the same for the middle third and the end third. Then I just ran the iron over the whole lot a few times.

    Then flipped the bag over and did the same thing. The whole thing did not take long at all per bag!

    Then I ripped the tab off (seemed to rip easier while it was warmed, it got stuck otherwise I found...) like in pic 10.

    And that's it! What a riveting thread right! This is not a professional nor guaranteed correct heat sealing, but just what I happened to try
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  2. #2
    Senior Member simonsk8r's Avatar
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    Pic 1, initial layout

  3. #3
    Senior Member simonsk8r's Avatar
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    Pics 2, 3, 4: how NOT to heatseal as it melts/rips up the plastic

    Pics 5, 6: the consequence of doing so

  4. #4
    Senior Member simonsk8r's Avatar
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    Pics 7, 8, 9: how I correctly (potentially!) ironed it. Notice the position being just before the very top of the rip tab

  5. #5
    Senior Member simonsk8r's Avatar
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    Pic 10: Rrrrrrrrrrrrip away and enjoy your new bags to fill with roasted coffee!

    (I sure hope they sealed properly... XD )

  6. #6
    Senior Member simonsk8r's Avatar
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    Also, anyone who has any tips/methods they've used feel free to share, or to correct any potential errors I may have made hehe.

  7. #7
    Senior Member fatboy_1999's Avatar
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    I went through the whole melting stuff with the iron phase.

    Far better off to shell out the $30 on that auction site and get the unit designed to do it.
    sealer.JPG
    Had mine for over 10 years, no issues.

    Brett.
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  8. #8
    Senior Member flynnaus's Avatar
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    You can pick up cheap Impulse heat sealers from Eeebay ($30-40). These are Chinese knockoffs of course but they do the job. I've had one for a few years now and I need to run at at least twice (once each side) to guarantee a seal but it depends on the thickness of the bag.

    Edit: fatboy beat me to it but that's the same as mine and I've had it almost as long as Brett
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  9. #9
    Mal Dimal's Avatar
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    Personally, and because they are so cheap to buy these days, why not use one of these?
    Much simpler and designed for the job...

    ImpulseSealer.JPG

    Mal.

    Ah, snap!
    Me too.

  10. #10
    Senior Member simonsk8r's Avatar
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    Hahaha... yep, fair enough, makes sense to just get one of them. Just figured I had an iron already and if it does the same job cool. But didn't realise one that would actually get the job done effectively would be so cheap!

    Appreciate it guys
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  11. #11
    Senior Member solace's Avatar
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    I too am an iron man

    But I go the baking paper option as have noticed sometimes the edges aren’t 100% even and glue is exposed - my day job attire probably doesn’t need glue residue added to it!

  12. #12
    Senior Member magnafunk's Avatar
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    I have a vacuum sealer and use the seal only function, works a treat. You have to let it cool a little between bags if you're doing more than a couple but it's very rare that I need to do that
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  13. #13
    Senior Member simonsk8r's Avatar
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    Behmor Coffee Roaster
    Quote Originally Posted by solace View Post
    I too am an iron man

    But I go the baking paper option as have noticed sometimes the edges arenít 100% even and glue is exposed - my day job attire probably doesnít need glue residue added to it!
    Ah yep fair enough, might consider the baking paper for next time!

    Quote Originally Posted by magnafunk View Post
    I have a vacuum sealer and use the seal only function, works a treat. You have to let it cool a little between bags if you're doing more than a couple but it's very rare that I need to do that

    Ah okay, yeah I might end up looking into a proper bag sealer.. just figure it will do it more evenly than the old iron, and seems aLOT easier to use than setup stuff for using the iron.

    I'll test out whether any air is escaping through the top just by closing the ziplock and squeezing and seeing if I can feel air leaking out. It looks fairly sealed but can't 100% tell...



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