Contact Adhesives must be applied to both surfaces and allowed some time to dry, or if solvent based the solvent to evaporate before the two surfaces are pushed together.  This time will depend on the specific adhesive, the amount applied and the ambient conditions of the time of the application.  Once the surfaces are pushed together and compression applied, the bond forms very quickly but the total cure of the glue line can take several hours.

Guidelines for using Contact Adhesives

1. Ensure that all surfaces that are to bonded are dry, clean and free of any contaminates.
2. Abrade surfaces if possible.
3. Apply an even amount of adhesive to both surfaces in accordance with the technical information supplied.
4. Allow to 'dry' before bringing the surfaces together.
5. Apply firm even pressure and expel and air pockets.
6. Leave to cure before subjecting the item to any other process.
7. Replace the lid and seal the container immediately after use.
8. If you are using a solvent based product, use in a well ventilated area away from any naked flame or possible electrical arcing.
9. Always follow information given on the technical data sheet and heed any warnings.