Vacuum feeding hot melt adhesive into the hot melt applicator is an efficient way to automate and improve the quality and consistency of your hot melt adhesive application.
2 key items should be reviewed to determine if your hot melt adhesive can be vacuumed for auto-feeding your hot melt application equipment.
Size of the Solid Hot Melt Form at Room Temperature
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Check to see if your current hot melt or a hot melt that comes in small vacuum feed form is available for your application.
Only small forms- the size of large BBs, or small chips – the size of small gum, (Chiclets or smaller), can be vacuum transferred from an auto-feed bin/drum into the hot melt application unit.
The small solid hot melt form must be free flowing at room temperature during shipping and inventory storage.
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Some hot melt adhesives come in small from but have residual tack that can form small blocks of adhesive that will not vacuum / auto feed without manually separating the blocks of pellets or chips.
Some small forms can block during shipping and storage.