Vulcanizing solution

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Vulcanizing solution with patches and sandpaper for repairing a bicycle inner tube

Vulcanizing solution or vulcanizing liquid - more rarely also rubber solution - is a rubber adhesive that is mostly used to repair bicycle tubes and is often included with the repair kit .

application

If a bicycle tube has a hole, for example caused by a nail, it is pulled out with the defective point between the rim and the jacket. A tube patch of the right size - like a sticking plaster to seal the defective area - is selected. The damaged area is roughened with the sandpaper that comes with every repair kit. Then vulcanizing solution is applied around the hole the size of the patch and spread evenly with the cap of the tube. The solution then takes about five minutes to dry out; in the process it loses its damp shine. Then the protective aluminum foil is peeled off the underside of the patch and firmly attached. After a further two minutes, the so-called vulcanization is complete, during which the rubber tube has bonded to the patch through the chemical process.

Tractor tires are also repaired in this way. In the automotive sector with its tubeless tires , however, damage is repaired differently today.

functionality

Naphtha is used as a solvent for natural rubber. When the liquid is applied, the rubber of the bicycle tube is "loosened" on the surface - in other words, molecular bonds are opened. After the solvent has evaporated, an adhesive film forms. By pressing the patch, it is permanently connected to the bicycle tube. Strictly speaking, the curing solution is an adhesive, and this form of repair has nothing to do with the process of vulcanization .

Individual evidence

  1. ↑ Mending a bike: this is how the tire will last Kölnische Rundschau. March 27, 2012, accessed October 15, 2018 .

swell

Hazardous substance labeling

  • Lovely

  • Dangerous for the environment

  • Extremely flammable

  • Lovely (old)

  • Environmentally hazardous (old)

  • Extremely flammable (old)