Content area
Full Text
Thestrength of the bond with a cold seal adhesive will vary for many reasons.
When discussing cold seal adhesives, people tend to use one of three different names-cold seal adhesives, self-seal adhesives, and cohesives. All these terms describe exactly the same material. The title used for this column-cold seal adhesives-seems to describe the use of these materials most accurately. Rarely, some people may refer to these adhesives as "latex." This is perhaps too generic and does not connote the fact that the application for the material is providing adhesion.
The technology for cold seal adhesives dates back many years. The formulations for these products commonly contain natural rubber latex, which is the predominant ingredient. Manufacturers of cold seal adhesives may add tackifying resins, plasticizers, extenders, or other ingredients. When added to the natural rubher latex, these ingredients modify the adhesive characteristics of the final product.
An antioxidant is a necessary ingredient, since natural rubber...