How do I design custom flat pouches and single-serve sachet dielines?

What are the heat-seal, tear-notch and hang-hole margins on a flat pouch dieline?

When you request a free custom dieline for printed flat pouches, our prepress team maps out the exact mechanical zones for your packet size and closure choice. Around the left, right and bottom edges sits the permanent heat-weld border (0.25 inches wide on small sachets under 4 inches, and 0.3125 to 0.375 inches wide on larger flat pouches). Along the open filling end sits the top closure zone, which you will heat-seal shut after filling. On a tear-open single-serve sachet, the V-cut tear notches sit about 0.375 to 0.5 inches below the top edge. Add a subtle dashed line and a small scissor or arrow icon across that tear path so customers see immediately where to rip, and keep your logo at least 0.25 inches below the tear line. On a resealable flat pouch with a press-to-close zipper and a euro hang hole, the top header extends 1.25 to 1.5 inches tall to hold the hang hole, top seal, tear notches and zipper track.

How do I keep small ingredient and dosing text sharp on miniature sachets?

A 2.5 × 3.5 inch cosmetic serum sachet or a 3 × 4.5 inch supplement packet has less than 6 square inches of usable back-panel space after subtracting the perimeter heat seals. Fitting a Supplement Facts box, ingredient list, allergen statement, directions, distributor address and lot-code box into that tight space requires clean prepress typography rules so fine letters never fill in with ink on press. Set small body text on sachets at 5.5-point to 6-point minimum in a clean sans-serif typeface, and print dark text as 100 percent single-color black (K=100) or a single dark Pantone ink over a light opaque background rather than building tiny letters out of four overlapping CMYK plates. If your sachet has a dark forest green, burgundy or black background with white reversed-out text, use at least 6-point medium or semi-bold weight so surrounding background ink does not pinch thin letter strokes.

1. Dark text on light background: use 100% K (black) or a single spot Pantone at 5.5 pt minimum for razor-sharp edges.
2. White reversed text on dark background: use 6 pt minimum in medium/semi-bold weight and avoid thin serif hairlines.
3. Metallic or clear sachets: always place a 100% opaque White Ink Underbase block behind nutrition panels and barcodes.
4. QR codes for extended directions: print a 0.6 × 0.6 inch high-contrast QR code linking to full multi-language instructions.

How do clear windows, metallic foil knockouts and kraft paper work on flat pouches?

Even on a slim flat packet, surface finish and material layering make a dramatic difference in how customers perceive your brand. For facial sheet masks, eye patches and botanical bath soaks, a velvety soft-touch matte lamination paired with metallic gold or silver accents makes a single-use packet feel like a luxury spa treatment. On metallized barrier film, you can create shimmering metallic borders, flavor badges or trading-card holographic effects at zero extra cost simply by knocking out the white ink underbase layer. If you pack colorful spices, heirloom garden seeds, bath salts or artisanal jerky in custom zipper pouches or kraft flat pouches, we can register a clear unprinted window in any custom oval or rectangle shape right into the front panel. Just keep the window outline at least 0.375 inches away from the side heat welds and zipper track so the seal strength stays uniform around the entire perimeter of the packet.

What drives the unit cost of custom flat pouches across multiple flavors?

Because flat pouches have no bottom gusset web and fewer folding stations on the converting line, they have a lower base material cost per packet than stand-up pouches of the same width and height. The main cost drivers are outer Width × Height, whether the packet is tear-open only or includes a press-to-close zipper, barrier film structure (standard metallized vs heavy liquid-grade aluminum foil or kraft), and total run quantity. When launching a variety pack of five drink flavors or four sheet mask formulas, keep the exact same outer Width × Height, barrier film stack and tear-notch position across every SKU. Grouping identical-size sachets together in one quote lets us run your entire line efficiently with zero die or plate charges, 10% off your first order, and our written US competitor price-beat guarantee. That makes it easy to test limited-edition seasonal flavors or regional sampler packs without tying up budget in setup tooling.

How do I get a free flat pouch dieline or print an AI design concept?

Tell us your target Width × Height (or what you are packing) in the quote form and our team will generate a custom flat pouch dieline template with all weld seams, bleed lines and tear notches marked. If you already have artwork in Illustrator (.ai), PDF or EPS format, upload it for a free prepress check. If you only have a logo or an AI-generated packaging mockup, our free design help and print your AI design service turn your concept into a press-ready vector file with a free 2D proof and 3D mockup before payment. During prepress review, our specialists check your minimum font sizes, verify that your UPC barcode has a 100% opaque white underbase on metallic or clear films, and confirm that no headlines or critical directions fall inside the top tear-off header or perimeter crimp seams.

What are the most common flat pouch and sachet artwork mistakes?

Check these five prepress details before approving your flat pouch digital proof

1. Placing brand logos or mixing instructions in the top 0.625 inch tear-off header where the customer rips the strip away upon opening.
2. Running small ingredient text within 0.25 to 0.375 inches of the left, right or bottom edges where the heated sealing jaws crimp the film.
3. Building tiny 5-point back-panel text out of four-color rich black (CMYK) instead of crisp 100% single-color black (K=100).
4. Forgetting to add a solid white ink underbase rectangle behind nutrition facts and UPC barcodes on metallic or kraft flat pouches.
5. Designing a retail hang hole on the front dieline without leaving 1.25 to 1.5 inches of top header space above the zipper track.

Packaging for this

Custom Flat Pouches

Custom Zipper Pouches

Custom Supplement Pouches

Custom Display Boxes

Print your AI design

Custom print your AI design

Custom Coffee Bags

More guides