Accidents happen. Water-based and protein glues are popular for packaging, laminating, and labeling applications and need to be applied as a liquid. The risk of having an accidental spill increases when glues are in the liquid state. 

Just like with most natural products, glues have an expiration date.  You'll notice, especially with your natural glues (protein/gelatin based) and liquid water-based glues, that after they have hit their expiration date they may become moldy and unusable.

What do you do if your glue is expired?

Paper tube winding is the process of spirally winding and gluing ribbon-like cardboard plies together into a cylinder shape. These tubes can range in size and thickness, and are cut to the desired length.

Consumer safety is critical when manufacturing packaging for food and beverages. To help protect the public, the U.S. Food and Drug Administration (FDA) regulates the use of glue for food packaging purposes.