Hemline Heat n Seal Ultra - 43cm x 4.85m

Heat ‘n’ Seal Ultra brings you a fantastic way to bring haberdashery ideas to life. The heat-activ...

Best current price£11.99from Minerva

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2 offers from £11.99 - £21.00

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MinervaMinerva Heat N Seal Ultra Iron/Paper/Denim Hemline 820.U.l
£3.99 delivery
£11.99
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Hobbycraft Trading LtdHemline Heat ‘N’ Seal Ultra 43Cm X 4.85M 43X4.85cm
£4.95 delivery
£21.00
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Product Information

Full details

Hemline Heat n Seal Ultra is an essential tool for crafters, sewists, and DIY enthusiasts who need a reliable, permanent bond for fabric projects without the need for traditional needle and thread. It offers a no-sew adhesion that is three times stronger than standard fusible webs, making it ideal for heavy-duty applications like denim and leather; however, users must ensure they use the correct low-heat settings to avoid damaging delicate materials.

All features

Model Part Number820.U.L
BrandHemline

Extended Product Information

FAQs

Does this product require a sewing machine?

No, this is a no-sew adhesive designed to replace stitching for many applications.

Can I use this on leather?

Yes, it is designed for use on leather, suede, denim, felt, and various other fabrics.

Should I use steam when ironing?

No, you must use low heat without steam for proper activation.

Is the bond permanent?

Yes, it is a permanent iron-on adhesive designed to withstand washing.

Can I wash the finished project?

Yes, projects made with this adhesive can be machine washed at temperatures up to 30°C.

How much material is on a roll?

Each roll is 43cm wide and 4.85m long.

Troubleshooting

The fabric pieces are not bonding correctly.

Ensure the iron is set to low heat and that enough pressure is applied for the full duration of the bonding time.

The bond feels stiff or brittle.

You may have used excessive heat; reduce the iron temperature and ensure no steam is being used during the process.

The edge is lifting after washing.

This often indicates insufficient initial heat or pressure; re-iron the edge with firm pressure to reactivate the adhesive.

Pros and Cons

Pros

  • Significantly stronger hold than standard fusible products
  • Suitable for heavy materials like leather and denim
  • Machine washable up to 30 degrees Celsius
  • No steam required for activation
  • Prevents puckering or lifting after application

Cons

  • Requires careful temperature management to prevent fabric damage
  • Permanent bond means repositioning is difficult once heat is applied
  • Not suitable for fabrics sensitive to heat

Setup, Compatibility & Care

To use, cut the Heat n Seal Ultra to the desired size of your appliqué or fabric piece. Place the adhesive between your two fabric layers, ensuring the paper backing is facing away from the iron. Set your iron to a low heat setting without steam. Press firmly over the area for the recommended time to activate the adhesive. Once cooled, the bond is permanent. The resulting project is machine washable at 30°C. Avoid using high heat or steam, as these may damage the adhesive properties or the fabric itself.

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