Our 3M vent tape 394 features a unique, non-woven synthetic backing with high air/gas permeability, good burst strength and solids barrier for minimal voids and less clean up. Allows air and gases to escape while keeping solids in place. We manufacture 3M vent tape 394 to meet most typical outgassing requirements for foam in place insulation processes in appliance and other industries. The non-woven backing conforms well, providing an effective seal. This unique backing has high air and gas permeability, allowing minimal foaming voids and has good burst strength, which helps reduce clean up. Our 3M vent tape is used to cover openings in the cabinet of refrigerators and freezers during the foam in place manufacturing process. It allows air and gases to escape while keeping solids (such as urethane foam) in place. The air-permeable, non-woven backing of 3M vent tape 394 keeps foam in place insulation inside door and appliance cavities, while helping eliminate voids. In our 3M industrial adhesives and tapes division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.