Custom Online Blow Molding Service
Booling’s blow molding technology employs advanced processing equipment, such as extruders, injection molding machines, and stretch blow molding machines. These devices can ensure production stability and dimensional accuracy throughout the entire molding process. Whether producing cosmetic bottles, beverage containers, or blow-molded barrels, it enables fast and high-quality manufacturing.
Booling's Blow Molding Service
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Blow Molding Capability
| Parameter Item | Booling Standard (Imperial Unit) | Metric Reference |
|---|---|---|
| Maximum Overall Dimension of Molds for IBC & Large Hollow Containers (Limit of mold frame; length, width and height cannot be combined arbitrarily) | 82.7 in × 51.2 in × 19.7 in | 2100mm × 1300mm × 500mm |
| Recommended Safe Wall Thickness (Optimal range for impact resistance and leakage prevention of IBC tanks) | 0.08 in ~ 0.20 in | 2.0mm ~ 5.0mm |
| Minimum Limit Wall Thickness (Tanks will crack and leak easily during drop test if thinner than this value) | 0.06 in | 1.5mm |
| Maximum Depth of Parting Surface (Excessive depth tends to cause local thin walls and mold sticking) | ≤7.9 in; overall outline size shall be reduced for deeper structures | ≤200mm; outline dimension needs to be reduced for products with greater depth |
| Standard Dimensional Tolerance for Mass Production | Linear overall dimensions: ±0.020 in Local features such as bottle necks and mounting lugs: ±0.008 in | Linear overall dimensions: ±0.5 mm Local features such as bottle necks and mounting lugs: ±0.2 mm |
The Characteristics Of Products Manufactured By Blow Molding
Hollow structure, one‑piece molding
We use hollow structural design and high-performance material formulations, which not only achieve lightweight products, but also give the products strong compression resistance and impact resistance, making them very suitable for transportation.
Lightweight and high strength
We use a hollow structure design, combined with the lightweight properties of the plastic materials we use, to achieve a reduction in product weight while still providing strong compression and impact resistance.
High surface smoothness
We use our own self-manufactured blow molding molds, whose cavity surface features high smoothness, allowing us to produce finished products with high surface smoothness.
Suitable for mass production
The blow molding production technology we use is highly automated, which effectively shortens the production cycle, making it very suitable for mass production.
Blow Molding Materials
HDPE (High Density Polyethylene)
It resists cracking during collision and transportation, withstands most acids and chemicals. Wall thickness is easy to control during blow molding.
Typical products: IBC tanks, large outdoor industrial hollow storage containers.
PP (Polypropylene)
Lightweight with moderate heat resistance and rigidity. Suitable for reusable food containers and small hollow housings.
Limitation: It tends to crack under strong impact at low temperatures.
PP+GF20% (20% Glass Fiber Reinforced Polypropylene)
Adding 20% glass fiber improves rigidity and structural strength. Finished parts are less prone to deformation with better dimensional stability.
Downside: Reduced toughness and poorer impact resistance, not suitable for products subject to frequent knocks and collisions.
Note: Glass fiber reinforced polypropylene is widely used for automotive blow molded components.
Application: Various industrial structural support parts.
PP+GF30% (30% Glass Fiber Reinforced Polypropylene)
With 30% glass fiber filled, it delivers higher rigidity and heat resistance than GF20 grade, resisting deformation under long-term load.
The material is more brittle with weak impact resistance, not recommended for working conditions with frequent impacts.
Note: Glass fiber reinforced polypropylene is widely used for automotive blow molded components.
Application: High-precision industrial structural components under continuous load.
ABS
It resists scratches during handling and assembly and maintains stable dimensions under different temperatures, ensuring consistent fitting with mating parts. It can be easily printed and painted. It will be corroded by organic solvents, so it is not applicable for chemical storage containers.
Typical products: Large flat hollow structural parts, automotive hollow components, equipment outer housings.
Whatever your needs, we have the solution.
Services Offered by Blow Molding Technology
Product Development
We adopt CAE simulation software to replicate the complete blow molding cycle, predicting potential risks including corner wall thinning, parison sag, stress concentration and stacking-induced warpage. Fillet geometry, gradual wall thickness distribution, segmented parison programming and vent layout are optimized according to simulation outputs.
The optimal design scheme is finalized prior to mold machining. Compared with conventional development workflows, the development cycle can be shortened by 10%～15%, trial revision frequency reduced by 15%～20%, which cuts machining, raw material and labor costs incurred from repeated mold rework.
Mold Design
We develop high-precision custom blow molds for large hollow products including IBC liners, 200L chemical drums and heavy-duty hollow pallets, preventing uneven cooling, bubble trapping and dimensional deviation during continuous production. We optimize conformal cooling channel layout, vent distribution, parison stretching ratio and cavity structural rigidity according to product load and volume requirements.
The finalized mold structure is confirmed before steel cutting. Compared with conventional mold design schemes, steady cycle time is guaranteed, daily production capacity is increased by 5%～8%, and long-term dimensional deviation is controlled within ±0.5mm for stable mass production.
Material Selection
We classify and screen blow molding grades including HDPE, PP, ABS material, PP and ABS, targeting common production defects such as chemical corrosion, low-temperature cracking, outdoor aging and poor surface printing performance. We match resin fluidity, impact toughness and barrier properties according to product storage medium, working temperature and service environment.
The most suitable material grade is confirmed before formal mold tryout. Compared with empirical material selection, product failure rate is reduced by 10%～15%, and post-production material cracking and leakage risks are eliminated for long-term batch operation.
Prototyping
We perform full-process in-house mold tryout to detect hidden defects such as weak weld lines, local material thinning and inconsistent wall thickness distribution on large hollow parts. We calibrate blowing pressure, extrusion speed and mold clamping clearance while recording complete molding parameter databases during sample production.
Fully qualified samples and inspection reports are delivered before shipment. Compared with traditional on-site trial debugging, the on-site trial iteration times are reduced by over 15%, and the overall mass production launch cycle is shortened by approximately 4-710 days.
Volume Production
We establish standardized mass-production process parameters for long-term continuous blow molding production, optimizing parison extrusion stroke, cooling time and blowing sequence to improve output consistency and wall thickness stability during high-volume operation. Auxiliary fixtures such as trimming jigs and blow pins are matched when required to maintain consistent molding conditions between batches.
Process windows are confirmed before mold delivery. Documented production parameters help reduce frequent adjustments and support stable production for standard industrial containers and hollow products. For standard container products, monthly output exceeding 3000 to 10,000 pieces can be supported.
After-Sales Service
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