Heat-Seal Backing
Custom iron-on patches have a layer of heat-activated adhesive on the back that melts into the fabric when pressed with an iron or heat press. We make them in embroidered, woven, printed, chenille and leather construction from 5 pieces, with heat-seal backing included at no extra charge and a free digital mockup before you pay.
Heat-seal backing is a thin sheet of thermoplastic adhesive bonded to the back of the patch during production. When you apply heat and pressure, the adhesive softens and flows into the weave of the garment. As it cools, it hardens again and locks the patch in place. No needle, thread or sewing skill is needed, which is why iron-on is the most popular backing for merch, team giveaways and retail patches.
The bond depends on three things: enough heat to melt the adhesive, firm pressure to push it into the fabric, and enough time for it to flow. Too little of any one leaves a patch that peels at the corners. Our step-by-step guide to ironing on a patch covers the exact process.
| Fabric | Iron-on? | Better option |
|---|---|---|
| Cotton, canvas, twill | Works well | Iron-on |
| Denim | Works well | Iron-on, sew edge for jackets |
| Poly-cotton blends | Usually fine at lower heat | Iron-on |
| Nylon, polyester shells | Risk of melting | Sew-on or hook-and-loop |
| Leather, suede | Not recommended | Sew-on or adhesive |
| Waterproof / coated fabric | Adhesive won't grip | Sew-on or hook-and-loop |
Natural fibers with an open weave give the adhesive something to grab, so cotton t-shirts, hoodies, denim, canvas bags and cotton-front caps are ideal. Synthetic shells and coated rain gear either can't take the heat or are too smooth for the glue to hold. Always check the garment's care label before pressing.
A household iron is fine for a handful of patches. Use a dry setting with no steam, press straight down on a hard flat surface, keep a pressing cloth between the iron and the patch, and hold rather than sliding. Turn the garment over and press from the back as well.
A heat press is the better tool for runs of 25 or more. It holds a set temperature, applies even pressure across the whole patch and times each press, so every garment comes out the same. Shops applying patches to hats use a curved cap platen; see our trucker hat patches page for that.
Whichever you use, let the patch cool completely before you test the edges. Warm adhesive is still soft and can lift if you pull at it.
A well-pressed iron-on patch on a cotton or denim garment can last for the life of the garment with normal care. What shortens its life is hot washing, high dryer heat and constant flexing on areas such as elbows and knees. Wash inside out on a cool cycle, air-dry or tumble low, and the adhesive stays put.
If a corner lifts, press it again with a cloth on top. For workwear that goes through industrial laundry, kids' clothing and jackets that see heavy wear, add a few stitches around the border after ironing. That combination gives you the quick placement of iron-on and the security of sew-on.
Choose sew-on patches for leather, nylon, waterproof fabric, uniforms that are washed hot and often, and any patch larger than about a hand's width where the edges take a lot of stress. Choose hook-and-loop patches when you want to swap a patch between jackets, bags or tactical gear. Our iron-on vs sew-on vs velcro comparison walks through each backing side by side.
PVC patches are rubber-like and usually sewn on or fitted with hook-and-loop rather than ironed. Tell us your garment when you request a mockup and we'll confirm the right backing.
Prices below come straight from our price sheet for designs up to 4″ on the longest side. Iron-on backing is included. Compare every type on the custom patch pricing page.
| Patch type | 25 pieces | 50 pieces | 100 pieces |
|---|---|---|---|
| Embroidered | $120$4.80 each | $165$3.30 each | $220$2.20 each |
| Woven | $148$5.92 each | $185$3.70 each | $235$2.35 each |
| Printed | $120$4.80 each | $165$3.30 each | $220$2.20 each |
Pricing shown covers designs up to 4″ on the longest side. Over 4″? We’ll email your custom price within 6 to 10 hours.
On cotton, denim and poly-cotton blends a properly pressed heat-seal patch holds through regular washing. Turn the garment inside out, wash cool and skip high dryer heat. For items washed very often, add a few stitches around the edge.
We don't recommend it. The heat needed to melt the adhesive can scorch or melt nylon and polyester shells, damage leather, and the adhesive does not grip coated or waterproof fabric well. Choose sew-on or hook-and-loop backing for those materials.
A heat press gives even temperature and firm pressure across the whole patch, so it bonds more consistently and faster. A household iron works fine for small runs if you press firmly, don't slide the iron, and let the patch cool before handling.
No. Iron-on / heat seal, sew-on and adhesive backings are included in the price. Only hook-and-loop backing adds a per-patch charge.
Every custom patch type starts at 5 pieces: embroidered, woven, printed, chenille, leather, PVC and glow-in-the-dark PVC. Larger quantities simply lower your per-piece price.
You review and approve your free digital mockup before paying. After payment, we make a real sample and send you a photo of it to approve before the full production run begins.
