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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Heat 'n Bond Ultra Iron with Adhesive – 3/8" X 10 Yds. The

Heat 'n Bond Ultra Iron with Adhesive – 3/8" X 10 Yds. The

Product ID: 732874821

Details

Brand
HeatnBond
Material
紙
Compatible Material
Metal
Unit Count
1.0 Count
Global Trade Identification Number

📏3/8 inch precision width

🧵10 yards continuous adhesive tape

🇺🇸Made in USA quality assurance

Description

🔥 Stick with the best — bond like a pro! 🧵

USA MADE QUALITY - Crafted domestically for trusted durability
LONG LASTING ROLL - Generous 10-yard length keeps projects going strong
PRECISION PERFECT - Exact 3/8" width for flawless bonding every time
VERSATILE ADHESION - Ideal for all fabric bonding needs, from repairs to creative crafts
NO FUSS NO BATTERIES - Ready to use with zero setup or power needed

Heat 'n Bond Ultra Iron with Adhesive offers a precise 3/8 inch width and a generous 10-yard roll of high-quality bonding tape, proudly made in the USA. This no-battery-required adhesive tape is perfect for professional and DIY fabric projects, ensuring durable, clean, and easy iron-on bonding every time.

Specifications

Manufacturer	Thermoweb
Part number	3509-38
Item Weight	0.28 g
Product Dimensions	1.91 x 9.53 x 13.65 cm; 0.28 g
Is Discontinued By Manufacturer	No
Material	紙
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	19 x 95 x 137 mm

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