Gluesticks

If glue sticks to the outside of a bottle, how come it doesnt stick to the inside?

Public Comments

1. its sealed! when it reacts to the air and drys out it gets hard.
2. Glue is made up of a substance that sticks to things and a solvent that keeps it liquid until you want it to stick. When you put glue on a piece of paper, the solvent gradually evaporates until the glue becomes sticky. When the glue is in a bottle, there is a space inside the bottle above the liquid that is full of air. So why doesn't the glue dry out? Well there's a limit to the amount of solvent that can evaporate to fill the space in the bottle. Once the space is full of solvent gas, no more solvent evaporates from the glue and the glue stays runny. Hope this helps
3. I think theres is not enough air circulating to make it dry and fixed enough to stick
4. for the liquid clue type, try leave the cap open for a week. It will stick. for the solid type, the clue will be moisten and sooner or later it won't be off any uses.
5. because da inside is wet..>>??
6. the air dries it on the outside
7. It does, but it only dries up inside if you leave the lid off, or unsealed. Because there is more glue on the inside, it takes longer to dry up (when unsealed). The reason it doesn't dry up when it is sealed is because there is little - no air drying it up inside the bottle.
8. Most glues are made up of solvents. When the solvents (water, oil based, ect.) are retained in the container and mixed with the glue material the product stays liquid. Once you release it to the air the solvent evaporates and you are left with the binding agent. (glue)
9. Simple. Air =] It's like any other glues. Air just speed up the harden process. If you buy a super glue bottle but never open it, it will eventually harden up inside in a long period of time. (6 months+ maybe?)
10. This question is asked about 10 times a day here http://answers.yahoo.com/search/search_result;_ylt=AuWbvbKhWzWbLe6L6E2fuXLxxQt.;_ylv=3?p=why+doesn%27t+glue .