30L ReCo 3-layer Stackable Barrel Blow Molding Machine
Single/Double Stations
Single/Double/Triple/up to 16 Head
Production Volume:2ml~35L
Multi layers: Co-Extrusion 1-6 Layers
Multi cavities: 1~16 cavities
Specialize for the PE/PP/PETG/PVC/Nylon/Co-Extrusion material
Special function: View Stripe
What is Stackable Barrel Blow Molding Machine?
The stackable barrel blow molding machine is a heavy-duty industrial system specifically engineered to manufacture large plastic containers that feature a unique “nesting” or interlocking design.
Unlike standard round barrels, these stackable containers have specialized top and bottom geometries – recessed bottoms and raised lid areas – that allow them to be stacked securely on top of one another without sliding, which is critical for logistics, chemical storage, and space-saving in warehouses.
Bestar Blow Molding Machine Feature
Bestar Machine matched with any European molds to increase production capacity and competitive machine investment cost with high-speed applications.
Easily configured for monolayer and multi-layer applications.
Co-extrusion multilayer head with PWDS (Parison wall distribution System).
Single or multi parison.
Efficient electric drives on extrusion system.
In-mold labeling and view stripe capable.
Technical Parameter
| Article | 30L Stackable Container |
|---|---|
| Diehead | 1-Fold Extrusion Head |
| Layer | ReCo 3-layer |
| Double/Single Stations | Double Station |
| Net Weight | 1300±10g |
| Cycle Time (Machine with S136molds) | 60 seconds with IML |
| Cycle Time with PWDS | 32 second |
| Article Output Per Hour (Machine with S136molds) | 120 pcs/hour |
| Output with PWDS | 225 pcs/hour |
| Machine Type | B25D-750 |
Blow Molding Machine Detail
Control System
Austrian B&R control system with PLC control, convenient to check or adjust temperature, speed and time, etc.
Embedded 100-point parison control system, well-distributed thickness and cost saving.
Fault diagnosis and alarms automatically are displayed on screen. Analyze and correct parameters by ADSL connection.
Die Head
Precise and accurate die head design-streamline, no blind angle and faster color change.
Lower back pressure, extending service time of extruder unit and gear box.
Multi-cavity flow channel, easy to control flow.
Multi-layer co-extrusion head with heart curve or sprial mandrel.
Single layer die head with offset spider.
View stripe on die heads at request.
Deflashing Unit
Top punching devices for neck, shoulder and handle with electro pneumatic control, including electro pneumatic control for cooling of flash and blowing away.
Bottom punching devices include counter support pneumatically spring loaded with electro pneumatic control. Driven by pneumatic cylinder.
Vertical adjustment for different article length.
Leak Tester
Fast filling, testing, diversity and decompression.
Automatic removal of leak products.
Article Conveyor System
Perfect combination between the design of robot arm and conveyor, reasonable layout, space saving.
Labor cost and production risk are effectively reduced.
Electrical Cabinet
Separate cabinet for heavy and light current.
Isolation transformer protects PLC from damage caused by short circuit.
Embedded industrial air conditioner guarantees normal working of control system under terrible circumstance.
Final Blow-molded Product
Blow Molding Machine FAQ
What materials are used for stackable barrels?
The most common material is HDPE (High-Density Polyethylene) because of its high impact strength, chemical resistance, and “stiffness,” which allows the bottom barrel to support the weight of several full barrels stacked above it. PP (Polypropylene) is also used for products requiring higher heat resistance.
Can these machines produce multi-layer barrels?
Yes. Blow molding machines use Co-extrusion (3 to 6 layers). This allows a middle layer of recycled plastic (PCR) to be sandwiched between layers of virgin plastic, reducing costs while maintaining the barrel’s strength and chemical safety.
How is the “stacking feature” molded accurately?
The molds for these machines are highly complex. They include specialized undercuts and cooling inserts in the top and bottom sections to ensure the interlocking ridges are perfectly formed and don’t warp during the cooling phase.
What is the difference between an Accumulator Head and Continuous Extrusion?
Accumulator Head: Necessary for very large barrels (above 30L). It stores a large amount of molten plastic and “shoots” it out quickly to prevent the heavy parison from stretching too much under its own weight.
Continuous Extrusion: Used for smaller stackable containers (5L–20L) to maintain a high-speed, steady output.
How do the machines ensure the barrels are leak-proof?
Most blow molding machine include an Integrated Leak Tester. After the barrel is blown and trimmed, it is moved to a station where it is pressurized with air; if the pressure drops, the machine automatically rejects the barrel.
Can I add a “View Stripe” to a 20L stackable barrel?
Yes. By using a small secondary extruder, a transparent vertical line can be added so the user can see the chemical level inside without opening the lid.
What special features are needed for chemical stackable barrel?
High-Precision Neck Finishing: The neck (where the cap screws on) must be dimensionally perfect to prevent leaks. Machines often have calibration blowing for the neck.
Leak Testing Station (often integrated): Many production lines include an inline air-pressure test to automatically reject leaking bottles.
Anti-Drop Neck Ring Handling: Prevents neck deformation during part transfer.
Deflashing System: Efficiently removes the “tail” and excess flash (especially for handle-ware bottles).
Production process flow of stackable barrel?
Raw Material Handling → Drying & Conditioning → Melting & Extrusion → Parison Formation → Mold Clamping & Blowing → Cooling & Ejection → Deflashing & Finishing → Leak Testing → Quality Inspection → Packaging & Palletizing
What key factors should I consider when choosing blow molding machine?
Bottle size & weight: Max./min. capacity (e.g., 100ml to 5L).
Output requirement: Bottles per hour/shift.
Neck finish detail: Type of thread (e.g., ISO, API, custom), handleware capability.
Material: HDPE melt index suitability.
Automation level: Auto-parison control, robot take-out, in-line trimming.
Floor space & utilities: Air consumption (CFM), cooling water (GPM), power (kW).
How to improve the production efficiency of blow molding machine?
Shorten the molding cycle: By precisely optimizing core process parameters such as heating, blowing, and cooling, and adopting rapid mold change technology and efficient mold cooling systems, time is compressed in each cycle to maximize output per unit of time.
Ensure continuous and stable operation: Implement a strict preventive maintenance plan and introduce automation devices (e.g., automatic feeding, robotic part removal) to minimize non-productive time wasted due to equipment failures, manual operations, and product defects.
About Suzhou Bestar Blow Molding Machinery
Bestar provides customers high efficiency, innovative, energy saving blow molding machinery solutions.
Bestar has won great trust from international customers by providing high-quality blow molding machines and perfect after-sales service. Bestar blow molding machines have been sold to North America, Poland, Mexico, Colombia, Peru, Argentina, Chile, Indonesia, Malaysia, Vietnam, Bangladesh, Saudi Arabia, South Africa, Egypt, Ghana, Tanzania, Ethiopia and other countries.
Bestar management “to take quality as a core principal, honesty and customer first, and create mutual benefits” we wish to share benefits, mutual cooperation and prosperity with domestic and international customers.
Contact Bestar Machinery
- Email: sales@bestarmachinery.com
- Mobile: +8618862609888
- WhatsApp: +8618862609888
- Fax: +86-512-5818 8210
- Address: Zhangjiagang Economic Development Zone, the eastern side of Gangcheng street, 215600, Jiangsu Province,China
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