It’s easy to take one look at the assortment of available nozzles for adhesive assembly systems and find yourself overwhelmed by choices. What’s the difference between extrusion, spray, and slot coating? Is one type “better” than the others, and is there any reason you’d need to invest in more than one kind? We’re here to help demystify the process.
Know Your Nozzles
There’s no one-size-fits-all method of adhesive application – this becomes most apparent when you start working with different substrate types. Wood and plastics are often-hardy materials that are a great fit for extrusion (in which small beads, stripes, or other patterns of melt adhesive are released onto the contact surface). This is an economical choice for many purposes, as it uses the adhesive supply efficiently and in small quantities while providing a very strong bond – but it’s not perfect for every manufacturer.
Take foam, on the other hand: most types are comparatively weak and susceptible to melting. As a result, bead extrusion of adhesives is unlikely to allow for a bond that withstands the necessary demands, and it may even damage the substrate with high temperature concentrations. Spray applicators can take that same adhesive material and apply it thinly and evenly across the contact surface.
Since so many products end up incorporating several different materials, it makes sense to keep additional nozzles on hand, rather than purchasing multiple versions of your heavy hardware. Swap out the nozzle on a manual adhesive applicator, and you’ve got a whole different dispensing system at minimal investment cost.
Need expert advice on assembly systems, or a customized solution for your business? Contact Sure Tack Systems today.