There are many types of foams to be laminated in packaging applications. Custom packaging and Laminating machine with the bonding questions regarding hot melts and hot melt equipment each day.
All the different foams and substrates they are laminated to require a variety of form of hot melts and several types of hot melt systems to utilize these hot melts.
A few 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 with a higher temperature and laminated fast as well as others remain “Open” and can be assemble a long time after the application form.
Most customers consider the usage of hot melt for bonding Hot melt laminating machine as these products accelerate the production process. The typical way of applying hot melts is at bead form and unfortunately from your stick gun on many occasions. Usually the hot melt in bead from burns in to the foam lowering the laminated area of 03dexopky in between the two substrates.
Optional strategies for hot melt application that are used worldwide by foam fabricators are spray, swirl, fiberization and rollcoating. These techniques let you apply a longer open time hot melts really quick into a temperature sensitive foams or Cutting press instead of impact the surface negatively. The more time open time simply gives you more hours to use the adhesive because it is being applied in a thin pattern to foam.
All substrates should be evaluated with the proposed hot melt and application method to insure that the adhesive and application system meet you production and quality requirements.