After years of serving metal cap manufacturing factories, we've found a easily ignored yet common issue in daily production, fine metal powder and floating workshop dust tend to settle inside thread grooves during high-volume aluminum cap and anti-theft cap processing.
From our field statistics, nearly 20% of packaging leakage failures for beverage and personal care aluminum caps are related to uncleaned thread groove residues, not gasket quality problems.
Most standard threading equipment does not support in-process cleaning, tiny debris left in thread grooves will press and rub against inner gaskets during capping, it creates micro scratches and minimal sealing gaps that cannot be detected by conventional finished-product inspection. These minor flaws slowly lead to leakage during long-distance shipping or shelf storage, causing steady after-sales troubles for cap producers.
Based on our actual production experience in metal cap machinery, we upgraded our threading units with built-in cyclic dust removal and groove cleaning functions.
Different from simple post-cleaning tools, our structure runs continuous cleaning throughout the whole thread forming procedure, it largely reduces residual powder buildup inside grooves. For most of our clients, this practical improvement helps them effectively control hidden leakage risks and maintain stable cap sealing performance in long-term mass production.
