In the small-capacity plastic container sector, stable parison extrusion, dependable clamping control, flexible multi-cavity setup, and manageable energy consumption matter more than merely “making a bottle.” The DHS-2L Blow Molding Machine is a single-station machine that supports 1 to 6 die-head configurations and is designed for packaging in petroleum, cosmetics, chemicals, pharmaceuticals, food, toys, and auto-parts applications. It also features a high-precision single-station linear guide, a Japanese hard-gear reducer and inverter, a special-steel central-incoming extrusion die, and a PLC + HMI control system. In practical terms, this is not just a forming machine; it is a 2L-class extrusion blow molding solution built around continuous, stable, repeatable production.
From the specifications, the DHS-2L has a maximum container capacity of 2L, supports PE and PP materials, offers 1, 2, 3, or 4 die heads, weighs about 4 tons, measures roughly 2.5×1.6×2.4m, delivers 40–50 kg/hr extrusion output, uses 22 kW total power, averages about 12 kW energy consumption, and requires 0.6 MPa air pressure with 0.4 m³/min air consumption. Taken together, these figures make the positioning very clear: the machine is suited to small to medium production of 2L hollow packaging while balancing output, footprint, and energy usage.
This parameter mix is not only about “being able to make 2L bottles”; it is about aligning cycle time, energy efficiency, and stability in small-container production. For daily chemical bottles, lubricant containers, small chemical packages, food containers, or compact industrial hollow parts, the 2L range typically demands enough extrusion capacity without the overhead of oversized systems that increase energy use and maintenance complexity. With a 50 mm screw, 25:1 L/D ratio, 3 heating zones, and an 11–15 kW extrusion drive, the DHS-2L reflects a classic small-to-mid capacity extrusion blow molding configuration, which is why it can be viewed as a “general-purpose 2L hollow container platform” in practice.
The machine is not limited to one bottle shape; it can correspond to multiple slender, rounded-shoulder, narrowed-neck, and ribbed body styles. That matters because packaging appearance often affects brand recognition, shelf presence, and logistics efficiency. For manufacturers, it also means the same machine can be adapted to different bottle design schemes, improving equipment utilization over time.
The DHS-2L’s design focus centers on four parts: clamping, extrusion, die head, and control. The official materials state that the clamping system uses a high-precision single-station linear guide; the extrusion system uses a hard-gear reducer and Japanese inverter; the die head system uses a central-incoming extrusion die with special steel, imported hydraulic valves, seals, and proportional control valves; and the control system consists of a Japanese PLC and HMI, automatic temperature modules, and imported electrical components. The value of this combination is that it optimizes mechanical rigidity, temperature precision, and motion response within one coordinated system.
Looking more closely, the basic components include a die with a vertical first-in-first-out structure, an extrusion unit with automatic temperature control, a hydraulic fixed bidirectional clamping system, an imported hydraulic unit with proportional control, and a Siemens PLC electrical system. This setup is well suited to blow molding operations that require stable, repeated motion, because once fluctuations in clamping, extrusion, and temperature control are minimized, it becomes easier to control parison length, wall-thickness distribution, opening quality, and trimming consistency. In hollow container production, stability is part of quality itself.
If we view the machine as a process chain, the logic is: raw material enters the extrusion unit, where the screw plasticizes it and the temperature-control module stabilizes the melt; the die head then forms the parison; the clamping system provides stable holding; the blowing assembly performs vertical or angled forming; the air pipeline accelerates cooling; and then automatic deflashing, conveying, recycling, and take-out complete the cycle. This shows that the DHS-2L is not only about “blowing the container”; it aims to connect the upstream and downstream steps into a complete production rhythm.
It also supports multiple automation extensions: it can be connected to a conveyor to send trimming scrap to a crusher for reuse, convey finished bottles out to connect directly with a filling machine, be equipped with a robot arm for bottle take-out, and even use a circular cutter for foil-sealing bottle neck trimming. For real factories, these interfaces matter because they directly affect labor cost, line synchronization, and downstream packaging efficiency. In simple terms, the machine’s value is not just in standalone operation, but in acting as an embeddable hollow-packaging node that connects upstream material handling with downstream filling and automation.
Among the specifications, the most important aspect is not any single number but the relationship among them. For example, the 40–50 kg/hr extrusion output, 22 kW total power, and 12 kW average energy consumption indicate that the machine emphasizes stable continuous production rather than extreme speed. The 40 kN clamping force, 158–410 mm platen opening stroke, 320×320 mm max mold size, and 160–240 mm mold thickness range show that it can accommodate common 2L-class containers. The 3 heating zones and 4.2 kW die heating power reflect a focus on maintaining uniform melt temperature.
The die-head parameters are equally important: a max die-pin diameter of 60 mm, twin-die center distance of 130 mm, tri-die center distance of 85 mm, and four-die center distance of 65 mm. These figures determine how the machine can be arranged, what mold spacing is feasible, and how it balances space and cycle time in multi-die output. In other words, die-head layout is not abstract at all; it directly affects product consistency, changeover efficiency, and process flexibility.
The official materials explicitly position the machine for packaging in petroleum, cosmetics, chemicals, pharmaceuticals, food, toys, and auto-parts, while company information notes that its broader equipment portfolio serves containers made from PE, PVC, PP, PC, PETG, PS, PAN, PA, PPE, PPO, ABS, POM, TRA, and more. Considering the DHS-2L’s 2L capacity and multi-die capability, it is especially suitable for small-capacity packaging, functional bottles and jars, compact industrial containers, and plastic hollow parts that require high consistency.
From a product-management and market-strategy perspective, one of the biggest strengths of this kind of equipment is that it can cover both standardized bottles and differentiated appearances. Standardization means better changeover efficiency and lower production risk; differentiation means stronger brand recognition and shelf competitiveness. For buyers, this kind of hollow-packaging solution allows new appearances, new specifications, and new end-use applications without changing the entire production-line logic.
The machine’s advantages can be condensed into four production-oriented words: stable, adjustable, line-ready, and maintainable. Stability comes from reinforced platens, reinforced tie bars, a box-shaped moving stand, and spherical bearings on the mold-closing and mold-moving cylinders. Adjustability comes from manual mold and blow-pin positioning, screw movement in multiple directions, and variable blowing orientation. Line-readiness comes from conveyor integration, scrap recycling, direct connection to filling lines, and robotic take-out. Maintainability comes from organized piping, a reinforced frame, and a new safety machine door design.
One particularly practical highlight is the combination of automatic deflashing and recycling. Automatic trimming reduces manual intervention, and the trimmed scrap can be sent to a crusher for reuse. That is valuable for daily chemical bottles, small-pack containers, and batch container production because these products often involve repeated runs, where scrap recovery directly affects material costs. Combined with direct discharge to a filling machine, the equipment is designed not only for the blow molding stage, but also for downstream packaging efficiency.
The official materials also provide background that helps assess delivery capability: the company has both a machinery department and a mold department focused on the design and manufacturing of plastic extrusion blow molding equipment and molds; it is located in Huzhou, Zhejiang, with a total investment of 10 million USD and a 58,000-square-meter site; its machines are mainly exported to more than 80 countries across Asia, the Middle East, Europe, Africa, Australia, and Latin America; and it states that it holds over 40 patent technologies. For buyers, this is as important as the machine specs because it shows that supply chain, design, molds, service, and international delivery are integrated.
The after-sales support is also comprehensive: inquiries are replied to within 12 hours, communication is available in English and Chinese, working hours run Monday through Saturday from 8:00 am to 5:00 pm, spare parts have a one-year warranty, and engineers can be sent onsite for installation, commissioning, and training. These commitments matter especially for blow molding equipment because real-world deployment is not “turn it on and done”; it usually involves mold trials, parameter tuning, process adaptation, and operator training.
If your target is PE or PP hollow containers within 2L, and you want a line with multi-cavity capability, stable clamping precision, expandable conveyor integration, and convenient interfaces for downstream filling or recycling, then the DHS-2L’s parameter set is highly targeted. Especially when a factory is focused on stable repeat production for small-to-medium packaging rather than ultra-large capacity or extreme high speed, the machine’s 40–50 kg/hr extrusion rate, 22 kW total power, single-station layout, and automation options become a strong fit.
If mold changeover and appearance differentiation matter more to you, this machine still offers room to expand. The images show multiple bottle profiles, and the structural description indicates support for mold and blow-pin positioning adjustments, multi-direction screw movement, circular trimming, and robotic take-out. In other words, it is not meant for a single package only; it is meant for continuous iteration around a family of related container designs.
The core value of the DHS-2L Blow Molding Machine is not any single metric, but the way it combines 2L capacity, single-station blow molding, multi-die configuration, PE/PP compatibility, PLC control, automatic trimming, recycling integration, and after-sales support into one practical production logic. For factories looking for a small-capacity hollow-container solution, this kind of machine—one that can form, integrate into a line, and keep improving over time—often has more long-term value than equipment that only advertises one extreme specification.
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