Custom Heat Seal Paper
Custom heat seal paper from 100 — kraft or white paper with a heat-sealable coating, supplied as printed sheets, rolls for packing machines, or made-up flat sachets for tea, spices, sugar and samples.
Paper that closes itself with a hot bar
- Paper
- Kraft or white paper 40–80 gsm with heat-sealable coating on one face
- Seal
- Peelable or firm seal; sealing temperature range supplied with the order
- Formats
- Printed sheets, slit reels, made-up flat sachets, lidding paper
Order online
Order heat seal paper
Starting from $0.75 per unit
Printed to your artwork or plain, sold in runs of 100 up to 5,000 units per product online. Freight to the US, UK, Canada and Australia is inside the price.
How an online order runs
- Add the units you needThen check out with your delivery address. Add other products to the same order on the way.
- A digital proof comes backLaid on the dieline, before anything prints. Change it as often as you need.
- Pay once you approve itPay by PayPal invoice or bank transfer after you approve your digital proof, or cash on delivery in the US and Canada.
- We make it and ship it deliveredYour delivery date is confirmed with the proof, against the spec and your fill date. Freight and customs are handled on the way to you.
Another size, board or finish, or more than 5,000 units? Send the spec for a price instead. Freight by market and our terms cover delivery and remakes.
Get a price for Heat Seal Paper
Send the size and quantity — we reply the same working day with a price, a dieline and a date. Artwork optional at this stage.
- Free dielineThe flat drawing comes with the quote, before you commit.
- Proof before pressNothing is printed until you have seen it laid on the dieline.
- Die kept for reordersTooling is paid once. Every reorder skips straight to press.
- Quoted in four marketsUS, UK, Canada and Australia, in the delivery currency.
What the coating does
The sealable layer is a water-based or polymer coating applied to the inside face. Under heat and pressure it softens, the two faces fuse, and the seal sets as it cools. Different coatings seal at different temperatures and give different strengths: a peelable seal for a sachet a customer tears open with fingers, or a firm seal that has to be cut.
The coating also adds some resistance to grease and moisture, but it is not a full barrier. For products that must be kept dry for months, a foil or film layer is still needed.
Forms it is supplied in
| Printed sheets | Cut to size for hand-made sachets and wraps |
|---|---|
| Reels | Printed rolls slit to width for form-fill-seal packing machines |
| Flat sachets | Made-up three-side-seal bags, filled and closed on a bench sealer |
| Lidding paper | Sealed onto paper trays and cups as a peel-off lid |
Products that suit a paper sachet
- Sugar, salt and pepper portions for cafés and takeaway.
- Loose tea, herbal blends and coffee samples.
- Spice mixes, seasoning portions and dry rubs.
- Seed packets, bath salts and other dry, free-flowing goods.
- Single-use samples for a launch or a mailer insert.
Getting a clean seal
Seal quality depends on three settings: temperature, pressure and dwell time. Too cool and the seal peels apart; too hot and the paper scorches or the coating squeezes out. We give the coating’s sealing range with the order so it can be set on your sealer, and can send a few test sheets first. Powder or crystals caught in the seal area is the most common cause of a leaking sachet, so fill from the center and keep the top dry. Our guide to how barrier packaging works helps decide whether paper alone is enough.
Printing on the outside face
Only the inside carries the sealable coating, so the outside prints like ordinary paper. Kraft gives a natural look with one or two colors; white paper takes full color for brand logos and portion details. Keep text and dark solids out of the seal margin, where heat can mark the ink. For unsealed food wraps, see our range of food papers.
Send the product, the fill weight, your sealer type and whether you need sheets, reels or finished sachets.
Heat Seal Paper — specification
The rows that are specific to this build first, then what applies to every job we run. Anything not listed is a question, not a limit — send the brief.
This build
- Paper
- Kraft or white paper 40–80 gsm with heat-sealable coating on one face
- Seal
- Peelable or firm seal; sealing temperature range supplied with the order
- Formats
- Printed sheets, slit reels, made-up flat sachets, lidding paper
- Outside face, one to full color; seal margins kept clear
- Use
- Dry, free-flowing goods: sugar, tea, spices, seeds, samples
- Minimum
- 100 sheets, sachets or a short reel run
On every job
- Print process
- Flexo on a roll for volume, digital for short runs and for variable data such as batch codes and names.
- Color
- CMYK plus spot colors. On clear film a white underprint is needed wherever a color must read against the product.
- Tolerance
- Die-cut plus or minus 0.5 mm, and the label drawn 3 mm inside the panel so a slightly crooked application still looks square.
- Tooling
- A cutting die per shape and size, made once and kept. A change of artwork on the same shape needs no new tooling.
- Food contact
- Food-safe adhesives and inks where a label goes onto food packaging or a food-contact surface.
- Sustainability
- Paper labels recycle with a paper pack. Synthetic labels come off first, and the spec says which yours is.
- Artwork
- Vector PDF or AI, 3 mm bleed, 4 mm safe area, fonts outlined. We check every file and send a proof before press.
- Dieline
- Supplied free with the quote, before you commit. Yours whether or not you order.
- Sample
- A plain unprinted sample at the finished size on request, for fit and construction.
- Reorders
- Skip the tooling and go straight to press at a lower unit price.
- Lead time
- Quoted with the price against your fill date rather than promised before we have seen the spec.
- Markets
- United States, United Kingdom, Canada, Australia — priced in the delivery currency, freight included.
Boards and films we build heat seal paper on
A label is a face stock, an adhesive and a liner, and each is chosen from where the label lands. The face decides how it prints; the adhesive decides whether it stays there.
Matte paper face
The everyday label. Writable, recyclable with a paper pack, and the right ground for a barcode. Not waterproof.
80–90gsmGloss paper face
Brighter color and a sharper photograph, at the cost of glare and fingerprints. Never put a barcode under a gloss finish.
80–90gsmKraft paper face
Unbleached and tan. One or two colors and white ink; the artisan seal. Colors print warm and muted on it.
70–90gsmClear polypropylene
The no-label look on glass and clear packaging. Needs a white underprint wherever a color has to read against a dark product.
50–60 micronWhite synthetic
PP or PE film: waterproof, tear-proof and dishwasher-tolerant. For bottles, jars, chilled and frozen goods and anything outdoors.
50–80 micronDirect thermal
Prints black with heat and no ink, for shipping and batch labels. It darkens in heat and fades in sunlight, so it is not for retail.
60–80gsmAdhesives
Permanent for corrugated and long-stay labels; removable for a clean peel; freezer-grade for anything applied cold or stored below zero.
Water- or solvent-basedLaminate and varnish
A film or a coat over the print for scuff and moisture resistance. It also stops a pen working, which matters on a label meant to be written on.
Matte, gloss or noneNot sure which? Say what goes in it and where it is sold — the material follows from that. Our notes on recycled, recyclable and compostable cover which claims each stock can honestly carry.
- 01
Send what you have
A dimension, a photograph beside a ruler, or the product itself. No technical drawing needed — that part is ours.
- 02
We quote and draw
A price, a dieline and a date come back together. If a different build would suit the product better, that is in the reply too.
- 03
Approve the dieline
The flat drawing is yours to check: which panel is the front, where the folds fall, how deep the cavity really is.
- 04
Artwork on the dieline
You place your design on the flat we sent, or we place it for you, and you see a proof before anything goes to press.
- 05
A sample if you want one
A plain unprinted sample at the finished size shows fit and construction — the things a drawing cannot.
- 06
Cut, printed, shipped
The die is cut once and kept, so every reorder skips the tooling and goes straight to press at a lower unit price.
Format
Vector PDF or AI where possible. Raster artwork at 300dpi at final size, in CMYK.
Bleed
3 mm past every trim line, so a fraction of drift on the cutter never leaves a white edge.
Safe area
Keep type and anything important 4 mm inside the cut and away from every fold.
Color
Convert to CMYK before sending. Uncoated stock prints lighter; a spot color is the only exact match.
Fonts
Outline them or supply the files. A missing font substitutes silently and the proof will not match.
Barcodes
On a light, matte, unvarnished patch with the quiet zone clear — a code on gloss fails the scanner.
Not set up that way? Send it anyway — fixing a file is a short conversation, and we check every one before press. Our guide to preparing print files covers each point.
A label is finished for what will rub against it and whether anyone writes on it.
Matte laminate
Scuff and moisture resistance. Stops a pen working, so not for a label meant to be filled in.
Gloss laminate
Deeper color and a wipeable face. Never over a barcode.
Varnish only
A thin coat instead of a film, so a paper label still recycles with the pack.
Hot foil
On a small label the block is tiny and the effect is out of proportion to the cost.
Embossed label
Raised shape on a face stock, usually on a bottle or a jar where it is felt.
Textured face
Felt, laid or cotton label stock for wine and spirits. Prints softly and tears with a fiber edge.
Not sure which suits the shelf it sells from? Say where the product is sold and we suggest one — our notes on specialty finishes show them on real boxes.
Sizing a label to the panel it sits on: heat seal paper
A label is cut to the surface, not to a standard size. Send the container or the box — or its dimensions and the panel you want covered — and the label is drawn to fit with the tolerance an applicator needs.
- Flat panel
- The panel less 3 mm each way, so a slightly crooked application still looks square. Rounded corners resist lifting.
- Wrap-around
- The circumference less 5 mm, so the ends butt rather than overlap. A wrap that overlaps its own print reads as a mistake.
- Corner radius
- 2–4 mm. A square corner lifts first and, on a shipping label, jams a sorter.
- Barcode area
- A white matte area with the quiet zone clear on both sides. Verified on the printed label, not on screen.
- Roll direction and core
- Set to your applicator: the wind direction, the core size and the number of labels per roll. Send the machine model.
- Application temperature
- Cold or damp surfaces need a specific adhesive. A standard permanent applied at 2°C often does not stay on.
Not sure your numbers are right? Send the product dimensions rather than the box dimensions and we work the box out — the full method is in our guide to measuring for a box.
Interactive · five steps · no sign-up
Spec your Heat Seal Paper
Pick a shape, type a size, choose a face stock and a finish. The preview on the left redraws as you go, and the spec lands with us exactly as you set it.
Frequently asked questions
Got a question about heat seal paper? The answers below cover what we get asked most. If yours is not here, send it with a brief, message us on WhatsApp, or call +1 503-461-4788 — we reply the same working day.
What is heat seal paper?
Paper with a coating on one face that melts under heat and pressure, so the paper seals to itself without glue or film.
Can I seal heat seal paper with a bench impulse sealer?
Yes. Bench and hand sealers work; we supply the coating’s sealing temperature so you can set the machine.
Is heat seal paper moisture-proof?
It resists some moisture and grease, but it is not a full barrier. Products that must stay dry for months need foil or film.
What products can go in heat seal paper sachets?
Dry, free-flowing goods such as sugar, salt, tea, spices, seeds, bath salts and samples.
Can heat seal paper be peelable?
Yes. A peelable coating opens with fingers; a firm seal is used where the pack should be cut open.
Do you supply heat seal paper on rolls?
Yes. Printed reels are slit to width for form-fill-seal packing machines.
Why is my heat seal paper sachet leaking?
Usually product caught in the seal area, or a temperature or dwell time outside the coating’s range.
Can heat seal paper be printed?
Yes, on the outside face, from one color on kraft to full color on white. Keep ink out of the seal margin.
Is heat seal paper recyclable?
Most coated sealing papers are accepted with paper recycling; it depends on the coating and on local programs.
Can heat seal paper be used as a lid?
Yes. Lidding paper is sealed onto paper trays and cups and peeled off to open.
What weight is heat seal paper?
Typically 40 to 80 gsm. Lighter papers suit small sachets; heavier ones suit lidding and larger portions.
Same range
