Iron-on & adhesive

Iron-on and adhesive leather patches

A patch can be fixed without a stitch line — provided the adhesive suits the fabric.

An iron-on or adhesive leather patch carries a heat-seal film or a pressure-sensitive adhesive on its reverse, so it can be bonded to fabric with a heat press or an iron instead of being sewn. Heat-seal adhesive needs a specific temperature, pressure and dwell time to activate fully, so it has to match what the fabric can tolerate; pressure-sensitive adhesive suits cases where heat is impossible or temporary positioning is wanted. EP TRIM can specify the right backing for your patch and recommend press parameters.

Heat-seal versus pressure-sensitive

Heat-seal adhesive bonds strongly and survives a number of washes, but it needs press equipment and a fabric that tolerates heat. Pressure-sensitive adhesive needs no heat and is quick to apply, which suits decorative or rarely washed products — but its bond and wash resistance are clearly lower. Where the product goes through a wash process, heat-seal is the better choice.

Why a trial is not optional

The same adhesive behaves very differently across fabrics: smooth polyester bonds readily, while a napped or water-repellent face needs higher temperature and longer dwell — and that higher temperature can scorch the leather. Settings cannot be copied from someone else's line. They have to be established with trial pieces made from your fabric and your patch, then fixed for production.

Three common reasons a patch will not hold

One: the wrong adhesive — high-temperature film on a low-melt fabric. Two: the press runs cooler than its setting because the machine was never calibrated. Three: dwell time is too short and the adhesive never fully melts. The first two are settled by a trial; the third needs the line to follow a standard. We can issue the recommended settings as a process card that ships with the goods.

Options and craft

Backing: Heat-seal film (press bonded), pressure-sensitive adhesive (no-sew), or none (sewn)
Fabric: Cotton, polyester, blends and denim; water-repellent finishes and low-melt fabrics need a trial first
Press settings: Recommended temperature, pressure and dwell time for your adhesive and fabric
Leather: Full-grain, split or PU; thinner stock bonds more easily
Wash resistance: Depends on the adhesive and the wash; a wash trial can be run first
Typical use: Cap fronts, bag exteriors, uppers and decorative labels on garments

Where it is used

Cap fronts, no stitching
Bag and leather-goods exteriors
Uppers and tongue labels
Decorative and positioning labels on garments
Home textiles and protective wear

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Frequently asked

How many washes will an adhesive patch survive?

There is no single number: it depends on the adhesive grade, the fabric, the wash temperature and whether it is machine spun. Heat-seal adhesive applied at correct settings normally takes several gentle washes; pressure-sensitive adhesive generally does not survive a machine wash. Tell us your wash conditions and we will give you a measured result from trial pieces rather than a verbal promise.

Can a patch have both adhesive types?

It is possible but rarely needed. A common approach is pressure-sensitive adhesive for positioning followed by stitching: the patch is tacked in place so the stitch line is accurate, and the long-term hold does not depend on the adhesive.

Our fabric has a water-repellent finish — will it bond?

Yes, but only after a trial. A water-repellent finish markedly reduces wetting and adhesion, usually calling for higher temperature, a film formulated for coated fabrics, or local preparation. We will only commit after trial results.

Can we buy only the patches and bond them ourselves?

Yes. We supply the backed patches with recommended settings on a process card and your line does the bonding. If pieces lift afterwards we will help trace whether it is the adhesive, the settings or the fabric.

Does the backing change the feel or look of the patch?

It does not affect the front, it only makes the piece slightly stiffer. If your design needs a soft hand, go thinner on the leather or switch to a sewn patch with no backing.

Minimum order and sampling time?

Agreed per design, lower where a mould exists. Sampling starts once leather, shape and backing are confirmed, after which we send backed trial pieces for you to run on your press. Send artwork, volume and fabric details to begin.

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