The capacity of bag sizes we provide are approximations only. The capacity (ex. 1-2 oz) is based on tests using whole coffee beans. A bag's capacity will vary depending on the product - and for coffee, the type of bean and style of roasting impacts fill volume. For example, salt vs. tea; salt weighs more than most teas. We highly suggest ordering our sample pack to trial fill your product to determine the right size for your needs.

Our blank flat pouches come in a box of 100. Our custom-printed flat pouches come with a minimum of 1,000 bags. This minimum can be broken down further into 100 per artwork file or design.

To make your bags tamper-proof, you’ll need to heat seal them after filling; this is true for all of our bags, regardless of type or material. We recommend using a heat sealer with an adjustable temperature gauge — our bags should be sealed between 120 and 130 degrees with a hold time of two to four seconds. Sealers without temperature control may run too hot and risk melting the material (no bueno).

Let’s talk science — gather ‘round, coffee snobs. Gases (including a bunch of carbon dioxide) are emitted after roasting and continue to emit even after your coffee is packaged. If the gases are trapped inside the package, this can cause the bag or pouch to inflate or bloat (not cute).

Here’s where the degassing valve magic comes in. When pressure inside a sealed package increases beyond the valve opening pressure, a membrane in the valve momentarily opens to allow gas to escape out of the package. As gas is released — and the pressure inside the package drops below the valve close pressure — the membrane reseals. This one-way air valve is added to fresh roast and ground coffee bags to allow the carbon dioxide to easily escape and prevent more oxygen from entering, slowing the rate of reaction and increasing the lifespan of your lovely coffee. Mm, coffee.

Read more about degassing valves on our blog.

No, there isn’t a zipper on this blank flat pouch. For more features, check out our custom option.