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    One-way degassing valve

    Required for whole-bean coffee. Fresh roast gives off CO₂ for days.

    Close-up of a small white one-way degassing valve on the kraft face of a coffee bag.
    Best for
    Whole-bean coffee packed fresh off the roast.
    Structure
    Moulded one-way valve, heat-welded to the pouch face. Clear, black or white.
    Print methods
    n/a (a component, and it sits on top of the artwork)
    Finishes
    Matte · Gloss
    After use
    Compostable valves exist but must be covered by the pouch's certificate. On a mono-polyethylene bag, ask for a valve that matches the film.

    Look and feel

    A small round disc, about 2 cm across, with tiny vent holes, welded flat to the bag face.

    Printing on it

    It's welded on after printing, so its spot goes on the dieline from day one. Keep type and key artwork clear of it.

    How it works

    Fresh roast keeps giving off CO2 for days. The valve opens when pressure builds inside and shuts before outside air can get back in, so the bag doesn't balloon and the beans don't go stale.

    After use

    Compostable valves exist but must be covered by the pouch's certificate. On a mono-polyethylene bag, ask for a valve that matches the film.

    Pairs well with

    Kraft / PET / aluminium / PE pouchCustom QuoteSamples

    How we describe it

    “a small round one-way degassing valve welded to the pouch face”

    Design something on this in Studio

    Also in flexible pouch films

    A kraft paper coffee pouch with a degassing valve and a black circle print, beside a torn piece showing its silver foil liner.

    Kraft / PET / aluminium / PE pouch

    The classic coffee pouch: kraft face outside, full barrier inside.

    A white kraft compostable pouch with a small green leaf print and no metallic layer.

    Kraft / PLA compostable pouch

    Small-batch coffee, tea and dry goods sold through a short supply chain.

    A soft-touch matte black coffee pouch with glossy varnish rings catching the light.

    Matte BOPP / metallised PET / PE pouch

    The matte black (or matte anything) coffee pouch.

    A satin off-white polyethylene pouch printed in pale blue with a navy stripe.

    Mono-material PE pouch

    Brands that need a recyclable claim on the back panel and can live with a softer hand.

    An iridescent oil-slick film pouch with an opaque coral print block and a small clear window.

    Metallised and iridescent film

    Pouches where the film itself is the whole idea.

    The torn-open top of a kraft pouch showing the tear notch and the press-to-close zipper tracks.

    Press-to-close zipper

    Reclosure on coffee, snack and dry-goods pouches.

    The rolled-down top of a kraft coffee bag held closed by a paper-covered tin tie.

    Tin tie

    Reclosure with a craft read, usually on kraft-face bags.