The reaction that takes place as an adhesive sets is influenced by temperature; a higher temperature will speed up the reaction, which means that labels applied at higher temperatures will usually have better adhesion than those applied at lower temperatures.
It should also be noted that extremely cold temperatures can also have an impact: the reaction may be slowed down, preventing a bond from forming properly, or the adhesive may solidify in extreme cold preventing any reaction – and therefore any adhesion – from taking place. This is why label products are supplied with a minimum application temperature – at lower temperatures, the adhesive simply won’t be able to function and the label won’t adhere to the item being labelled.
During storage/use:
The temperatures that labels are exposed to during use and/or storage after they have been applied can also influence the adhesive bond; any extremes of heat or cold may interfere with an adhesive bond causing the bond to fail and leading to BOPP labels peeling up or falling off entirely.
SURFACE:

Some surfaces are better suited to adhesives than others; the properties of the surface influence how well BOPP labels are able to form a bond that is strong enough to hold a label in place on that surface. The most important factors are the texture of the surface, the shape of the surface, and the material the surface is made of.

Texture: surfaces can have peaks and troughs of various depths, ranging from smooth, flat surfaces to rough, uneven ones. Adhesive bonds are most successful when there is a large surface area available for the adhesive to bond to. Labels on sheets tend to have adhesives that are in a semi-fluid state; this means that the adhesives have some ability to move into troughs in a surface, which means that the best bonds are created when a label is applied to a surface with some shallow troughs as this increases the surface area available between the label and the item being labelled.