Glue with a heat gun (HDPE & PP)
Hot melt adhesives don’t offer the same performance as 2-components-adhesives, but they provide an accessible, quick and wasteless solution for those applications with no need for a high performance bonding.
We generally don't recommend glueing parts together as it will make the disassembly harder at the end of the product’s life. So check out other joining techniques first! If this is still needed, here some guidelines. —
Step 1 - Stay safe
- ventilated space, mask
Step 2 - Choose the right glue sticks
Of course the composition of the glue will vary depending on the brand. In our research the following BÜHNEN hot melts worked well:
- A21325.1 (for PP)
- A20364.1 and J2169 (for HDPE)
Step 3 - Prepare the surfaces
Before applying the hot melt make sure to clean the surfaces you are going to glue together with a non-aggressive product like IPA (Isopropyl Alcohol) cleaner and a Scotch Brite or similar to remove any dirt or release agent left from the mould.
Step 4 - Apply the hot melt
You want to glue the pieces together while the glue is still hot (< 25s). So make sure you have everything ready because you have very little time for error correction. Once you put them together, in a few seconds both pieces will get glued.
Step 5 - Recommended applications
(Another very functional application: This adhesive can help making other joinery methods watertight by sealing the surface.)
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