4. What are the technological limits of hot-air welding?
There are few limits to this technology, apart from the thickness and heat behaviour of the materials.
Thin thicknesses (less than 70 µm) require precise temperature control.
When you need to weld two materials, you need to know how they are made. This is a key factor in the unsurprising success of hot-air assembly.
The other critical point is the processing mode of the thermoplastics you have to weld. Here are a few high-risk processing methods: extrusion blow-molding, extrusion stretch-molding, injection blow-molding, foamed materials, certain non-woven, woven or needle-punched textiles, and so on. So if one of your materials is the result of one of these processing methods, there's a risk that it will "shrink"; it...
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What are the technological limits of hot-air welding?
Combining several operations with hot-air welding
Bibliography
Also in our database
Regulatory references
NF EN 13067 : December 2012 — Plastics welding personnel — Welder qualification test — Thermoplastic welded assemblies
AFG B.527.9 : According to the specifications of the French Gas Association, qualification test for polyethylene operators.
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