will this unstick in the heat?

I would say no....but never tried it.

can this be applied to a patch to make it an iron on patch?

In theory, if the stuff works properly, then yes, but it wouldn’t bond my light weight materia (flour sack towels) so I wouldn’t trust it to hold a patch on.

Can it be used to fix a tear on a sweater?

This is a double-sided adhesive. (Think of it like a REALLY strong double-sided tape that requires heat to bond.) Typically for tears, you would use this if you want to patch the tear with fabric (and this can be used as the adhesive for that fabric patch.) It shouldn't be used alone on a tear since it's double-sided. The HeatnBond UltraHold is a no sew product so you would only want to use this on a heavier weight fabric that you do not plan to sew.

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Thermoweb 3509-38 9.5 mm x 9.1 m Ultra Hold Roll, White

Thermoweb 3509-38 9.5 mm x 9.1 m Ultra Hold Roll, White

Product ID: 47879300

Details

Brand
heatnbond
Colour
White
Material
Paper
Number of items
1
Recommended uses for product
Sewing Textile

🔥3x stronger bond

🧵No sewing needed

🛠️Double-sided adhesive

€ 14.82

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Description

🔥 Stick with the best—bond like a pro, no stitch required!

CREATIVE FREEDOM - Ideal for textile bonding, crafting, and DIY projects without limits
UNMATCHED STRENGTH - Heat-activated bond that's 3x stronger than traditional fusible webs
EFFORTLESS CRAFTING - No pins, no sewing—just iron and go for a flawless finish
PERMANENT WATERPROOF - Reliable, long-lasting hold that stands up to moisture
VERSATILE COMPATIBILITY - Works seamlessly on fabric, leather, wood, suede, and more

Thermoweb 3509-38 Ultra Hold Roll is a heat-activated, double-sided adhesive tape designed for permanent, no-sew bonding on fabrics and diverse materials like leather, wood, and suede. Its bond strength is three times stronger than traditional fusible webs, waterproof, and perfect for professional-grade crafting and textile projects.

Specifications

ASIN	B00114LZX0
Adhesive Format	TAPE
Adhesive Location	both_sides
Adhesive Side Count	2
Best Sellers Rank	451,384 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 970 in Arts & Crafts Tape
Brand	heatnbond
Colour	White
Compatible Material	Plastic
Customer Reviews	3.8 3.8 out of 5 stars (81)
Global Trade Identification Number	00000943038108
Item Dimensions L x W x Thickness	10W x 10Th millimetres
Item Resistance	waterproof
Item Thickness	0.38 Inches
Item Weight	0.01 Ounces
Manufacturer	ULTRAHOLD 10mmx9m(3/8"x10yds)
Manufacturer Part Number	3509-38
Material	Paper
Model Number	3509.38
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Permanent
Recommended Uses For Product	Sewing, Crafting, Textile Bonding
Size Name	3/8 inch x 10 yards
Surface Recommendation	Leather
UPC	000058656426 000943038108
Unit Count	1.0 count
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 14.82

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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