European Major Chemical Group

200L dual L-ring chemical drum mold project (UN 1H1 certified)

PAIN POINTS

Chemical drums must hold corrosive liquids and meet UN hazmat packaging certification. The old mold's unstable parison control caused wall thickness deviation of ±1.2mm, cracking under 1.2m drop tests. Uneven cooling caused elliptical deformation at the sealing surface, creating leakage risk when fitted with the lid.

MOTEK SOLUTION

• Used 7075 aviation aluminum forged cavities with precise parison program control, controlling wall thickness deviation within ±0.4mm.
• Designed dedicated conformal cooling ring at drum opening, ensuring sealing surface roundness ≤0.6mm for zero-leakage lid fit.
• Optimized bottom-to-body transition structure, passing 1.8m drop test and 250kPa hydraulic test.

"motek's chemical drum mold helped our product pass UN 1H1 certification on the first try. Our clients are very satisfied with the sealing and drop resistance."

North American Industrial Chemical Distributor

120L wide-mouth chemical drum mold project (threaded opening + seal ring groove)

PAIN POINTS

Wide-mouth drums require frequent opening for material access. The old mold's blow-molded thread had pitch deviation from uneven shrinkage, causing difficult lid threading or poor sealing. Seal ring grooves showed scuffing due to insufficient draft. Low cooling efficiency resulted in a 75-second cycle.

MOTEK SOLUTION

• Used threaded inserts with precision guiding, controlling thread accuracy within ±0.1mm for smooth lid operation.
• Optimized seal ring groove draft angle and ejection system, eliminating scuffing and ensuring sealing reliability.
• Designed zoned cooling channels for the drum body, reducing cycle time from 75s to 60s.

"motek's wide-mouth drum mold gave us smooth lid operation and zero leakage, increasing capacity by 20%. Our clients are very satisfied."