Adhesives are used to help bond numerous types of materials. Beginning early in the 1900s, it was common for asbestos use in adhesives . Unfortunately, microscopic asbestos fibers are dangerous when inhaled into the lungs. By the 1980s, the dangers were so widely known that asbestos use was largely discontinued.
Asbestos Use in Adhesives
Adhesives are used in flooring, wallpaper, HVAC systems, and many other construction materials. Additionally, they were used to patch seal joints on boilers and pipes on United States Naval ships because, when these adhesives contained asbestos, they were capable of withstanding extreme heat and fire. Fortunately, asbestos-containing adhesives have low toxicity levels and are not friable. As a result of this, the only adhesives banned by the Environmental Protection Agency are sprayed-on asbestos adhesives that contain more than one percent asbestos and flooring felt adhesive.
The majority of liquid, non-roofing adhesives that contained asbestos were created through the use of bagged asbestos. The asbestos was placed into a fluffing machine in order to separate the fibers. Next, resins or solvents were added in a batch-mixing tank, along with pigments or fillers. Once complete, the material was packaged in metal pails, smaller containers, or tubes. By 1985, about 9.6 million gallons of asbestos non-roofing adhesives, sealants, and coatings were being produced. However, throughout the 1980s, the use of asbestos began to decline due to awareness of the danger, coupled with the filing of lawsuits, which increased insurance costs.