There are many types of foams to get laminated in packaging applications. Custom packaging and Laminating machine with all the bonding questions regarding hot melts and hot melt equipment daily.
All the different foams and substrates they may be laminated to require a number of type of hot melts and several types of hot melt systems to utilize these hot melts.
A number of the standard hot melts used are pressure sensitives (PSA) , polyolefins (APAO), ethyl vynil acetates (EVA). Each hot melt offers different bond capabilities. Each hot melt has different viscosities and softening points for temperature resistance requiring different application methods. Some must be applied in a higher temperature and laminated fast as well as others remain “Open” and might be assemble long after the application.
Most customers consider the use of hot melt for bonding Hot melt laminating machine because they products accelerate the development process. The typical approach to applying hot melts is at bead form and unfortunately from the stick gun most of the time. Often the hot melt in bead from burns into the foam lowering the laminated section of 03dexopky involving the two substrates.
Optional strategies for hot melt application that happen to be used worldwide by foam fabricators are spray, swirl, fiberization and rollcoating. These methods allow you to use a longer open time hot melts fast to your temperature sensitive foams or Travel Head Cutting Machine and never modify the surface negatively. The longer open time simply gives you additional time to work alongside the adhesive as it is being applied within a thin pattern to foam.
All substrates must be evaluated with all the proposed hot melt and application method to insure that the adhesive and application system meet you production and quality requirements.