There are lots of types of foams to get laminated in packaging applications. Custom packaging and Laminating machine using the bonding queries about hot melts and hot melt equipment daily.
The range of foams and substrates they may be laminated to require a number of type of hot melts and different types of hot melt systems to make use of these hot melts.
Some 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 have to be applied at a higher temperature and laminated fast yet others remain “Open” and will be assemble a long time after the application form.
Most customers consider the use of hot melt for bonding Film laminating machine since these products accelerate the development process. The standard method of applying hot melts is at bead form and unfortunately from your stick gun most of the time. Usually the hot melt in bead from burns into the foam decreasing the laminated region of 03dexopky involving the two substrates.
Optional ways of hot melt application which are used worldwide by foam fabricators are spray, swirl, fiberization and rollcoating. These techniques allow you to apply a longer open time hot melts very fast to your temperature sensitive foams or Cutting press instead of impact the surface negatively. The more open time simply gives you more hours to work alongside the adhesive because it is being applied in the thin pattern to foam.
All substrates should be evaluated together with the proposed hot melt and application approach to insure that the adhesive and application system meet you production and quality requirements.