Hollow Blow Mold Manufacturing Case
Booling provided mold manufacturing services for a leading manufacturer of hollow blow molded containers. The client procured multiple molds for the production of blow molded containers.
Cooperation Case: Blow Mold Manufacturing for Hollow Containers
A leading industrial packaging enterprise in China is one of the major domestic manufacturers of hollow blow molded containers. Its product portfolio covers a full range of chemical, food-grade and hazardous goods transport & storage containers with capacities from 5L to 1,000L. The client required multiple sets of blow molds for IBC tank liners, 200L open-top drums, 200L tight-head drums and stackable barrels.
Client Requirements
| Requirement | Specification |
|---|---|
| Mold Output | Annual output of over 60,000 units per mold (for IBC / 200L series) |
| Wall Thickness Uniformity | Maximum wall thickness deviation ≤ ±0.30 mm across the entire surface |
| FDA Compliance | Surface roughness Ra ≤ 0.25 μm for food-grade container molds; no dead corners |
| Mold Lifespan | Minimum 250,000 shots |
| Lead Time | Within 110 days from drawing confirmation to qualified T2 samples |
| After-sales Service | Supply spare parts, maintenance and technical process support throughout the mold service life |
Challenges And Difficulties
Unstable wall thickness uniformity
The molds from the former supplier presented a wall thickness deviation of up to ±0.50 mm at the four corners and bottom ring of IBC tank liners.
Short mold service life
Temperature differences can easily cause condensation on the duct surface. Additionally, the airflow noise (hissing) must be strictly controlled to prevent noise from entering the passenger cabin. This poses challenges to both material and structural design.
Solutions
We delivered a total of 5 sets of blow molds covering IBC tanks and chemical drums. The average lead time was 105 days, well within the target of 120 days. The average first-year scrap rate stood at 0.9%, lower than the required maximum of 1.5%. The earliest delivered IBC mold has run for 160,000 shots without major maintenance. Equipped with our molds, the client achieved a substantial increase in annual output and saw remarkable growth in business share across the European market.
Client Testimonial
Booling Mold boasts outstanding engineering strength in large blow molds. Their advanced wall thickness control and optimized cooling systems helped us meet strict European client requirements. We have expanded cooperation from the first IBC mold to the entire product range.
— Technical Director, Partner Enterprise
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