EP-HGA.JS-2C366(20L) Large-Volume Blow Molding Machine for Pesticide & Chemical Containers

EP-HGA.JS-2C366(20L) Large-Volume Blow Molding Machine for Pesticide & Chemical Containers

The EP-HGA.JS-2C366(20L) represents the high end of the ES series product line — a purpose-built, two-step blow molding machine engineered for large-volume pesticide, industrial chemical, and agrochemical container production. With a maximum container capacity of 22,000 ml (22 litres) and a dual-cavity configuration, this machine occupies a category that very few fully automatic blow moulding machine platforms can address: blow-moulded PET and PC containers in the 5–20 litre range that must meet the dimensional precision, wall uniformity, and chemical resistance standards demanded by leading agrochemical formulators worldwide. Wherever large-format pesticide containers, 10-litre detergent drums, or 20-litre chemical jerricans are required — in Colombia, Brazil, Southeast Asia, or any major agricultural market — the JS-2C366(20L) delivers production-grade reliability.

Unlike smaller-cavity machines that struggle with the long stretching stroke and high blow-air volumes that large containers require, the JS-2C366(20L) was designed from the start for this demanding application. Its 620 mm stretching stroke and 12,500 ltr/min high-pressure air circuit provide the energy and mechanical travel needed to fully inflate a preform into a 480 mm tall, 300 mm diameter container at 35 kg/cm² — producing a biaxially oriented wall that resists both the chemical content and the rough handling typical of field-use agrochemical packaging.

Large-Format Container Production: What Sets the JS-2C366(20L) Apart

Large-volume container production presents challenges that are qualitatively different from those in small-format bottle manufacturing. When a preform weighing 300 g or more is being inflated into a 20-litre container, the stretch-blow window — the narrow band of preform temperatures within which the material will orient correctly — is shorter and more sensitive to variation than in a 500 ml preform. Any deviation in preform temperature uniformity across its wall cross-section results in localised thinning, which in turn creates potential stress-crack initiation sites that can fail catastrophically in chemical service. The JS-2C366(20L) addresses this through its 86 kW infrared heating system, divided into independently controlled zones that maintain the preform body within a tight temperature envelope from the neck support ring to the gate, regardless of the preform's wall thickness distribution.

The machine's two-cavity blow station is configured for the large mold dimensions that containers in this volume range demand. The mold-open distance of 772 mm and clamping stroke of 332 mm accommodate blow molds with the external dimensions needed for 300 mm diameter containers, while the toggle-lever clamping mechanism maintains consistent closing force across both cavities simultaneously. At 700 bottles per hour theoretical output, the JS-2C366(20L) is positioned for operations where production runs are counted in days rather than hours — typical of large-volume agrochemical container lines supplying seasonal crop-treatment campaigns in Colombia, Brazil, India, and comparable agricultural markets.

Key Advantages of the JS-2C366(20L) Blow Molding Machine

Producing large-format chemical and pesticide containers on an automatic pet blowing machine at the quality level that major agrochemical brands require is a fundamentally different engineering challenge from small-bottle production. The JS-2C366(20L) Blow Molding Machine was designed around four core requirements that define performance in this application: thermal control over heavy preforms, adequate mechanical travel for tall containers, sufficient air-flow capacity for large internal volumes, and robust mold clamping across wide-face tooling. Each of these requirements has driven specific design decisions that distinguish the JS-2C366(20L) from adapted small-format machines that are sometimes offered for large-container applications.

The 86 kW heating system — the highest in the ES series — provides the thermal capacity to condition preforms weighing upwards of 250 g within the production cycle time required to sustain 700 bph output. The independent zone controllers allow the operator to establish a temperature gradient across the preform body that compensates for the non-uniform wall cross-section typical of heavy preforms, preventing the localised thinning that leads to gate-area stress cracking in service. The 120 ltr/min cooling water circuit — more than three times the flow of the smallest ES models — supports rapid mold cool-down after each blowing cycle, maintaining cycle time even when mold face areas are large and thermal mass is high.

Partner Brands

Our engineering team carries over two decades of continuous research and practical manufacturing experience in blow molding machine design, spanning the full range from small-format cosmetic packaging to the large-volume agrochemical and industrial chemical containers this machine addresses. Throughout that period we have built a portfolio of national patents covering innovations in preform heating architecture, servo-driven stretch-blow mechanics, and high-pressure air management. Our production platform handles PET, PETG, PC, PCTG, and PP materials across industries including cosmetics, water and beverages, edible oil, pharmaceuticals, food packaging, and baby products. We maintain a particularly strong position in the high-specification cosmetics and pharmaceutical sectors, where dimensional accuracy is non-negotiable. Clients who rely on our plastic blow molding machine systems include Yibao, Haitian, Luhua, Walch, Blue Moon, Proya, Libai, Estée Lauder, Walmart, Da Senlin, and Shining Eye Drops.

Mold Engineering for Large-Format Containers

Large-volume container molds impose physical demands — mold weight, face area, cooling circuit length — that standard mold designs cannot satisfy without engineering compromises. All tooling supplied for the JS-2C366(20L) is manufactured in-house to specifications developed specifically for containers in the 5–20 litre range, with cooling circuit geometry and structural stiffness calculated for the thermal and mechanical loads of continuous production.

Preform Injection Mold

• The die lip is constructed in two precision-matched sections that lock concentrically during the forming cycle, maintaining gate-to-neck co-axiality on the heavy preforms this machine processes.
• Enhanced cooling channel routing extracts heat efficiently from thick-wall preform cross-sections, preventing the extended cooling times that would otherwise reduce overall output rate.
• Cavity-forming surfaces are machined from imported 2316 die steel — hardened, treated for corrosion resistance, and selected for its dimensional stability under repeated thermal cycling with large-mass preforms.
• Core plates and cavity plates are fabricated from 420 stainless steel, providing corrosion resistance appropriate for processing environments where moisture or cleaning chemicals contact the tool surface.
• Maintenance access is designed for practicality — a consideration that carries extra weight when the mold is physically large and heavy, requiring safe and efficient handling during scheduled service.
• Interchangeable die inserts follow a standardised fitment interface, allowing the same mold base to serve multiple preform neck-finish standards without full tooling replacement.
• The cavity architecture supports multi-type preform production from a single mold platform, providing flexibility for operations that supply multiple container formats from a shared preform base design.

Blowing Mold

• Cavity blocks are sourced from premium alloy tool steel grades selected for compressive strength at the high clamping forces that large-face molds require, and for dimensional stability over extended production campaigns.
• All container profiles — including grip geometry, label panels, stacking features, and base reinforcement — are developed in professional 3D CAD/CAM software and transferred directly to CNC cutting programs.
• A range of standard large-format container profiles is available for immediate selection; fully custom designs are supported through digital simulation and prototype validation before tool steel is committed.
• Cooling channel positioning is modelled to achieve uniform heat extraction across the full face of large-format container molds, preventing differential shrinkage that causes dimensional deviation in tall containers.
• All structural and cavity components are machined on multi-axis CNC centres, holding surface finish and dimensional tolerances critical for closure-sealing integrity on wide-mouth chemical containers.

Machine Structure & Engineering Detail

The JS-2C366(20L) stretch blow molding machine is structured around three sub-systems, each scaled for the physical demands of large-volume container production in ways that smaller ES series machines are not.

Preform Heating System: The 116-position preform carrier traverses an infrared heating tunnel with multiple independently controlled zones. For the heavy preforms that 10-litre and 20-litre containers require, the installed 86 kW capacity provides sufficient thermal energy to fully condition each preform within the available residence time at the target production rate. Zone-by-zone temperature adjustment allows the operator to build a deliberate temperature gradient from the gate area to the neck support ring — essential for directing material flow toward the container base and away from the neck finish during the stretch-blow cycle.

Blow Station: The two-cavity blow station uses a toggle-lever clamping mechanism providing repeatable clamping force across both large-format mold faces. The servo-driven stretch rods travel 620 mm — long enough to reach the base of a 480 mm tall container and maintain tension on the preform through the full blowing cycle. The 12,500 ltr/min high-pressure air supply at 35 kg/cm² ensures that the large internal volume of 20-litre containers is pressurised quickly and completely, with no pressure decay that would result in under-blown base panels or shoulder geometry defects.

Control & Utilities: The PLC platform manages all blow cycle parameters — stretch rod position profile, pre-blow pressure, blowing pressure, mold timing, and preform transport speed — through a colour touchscreen HMI. Up to 50 container format recipes can be stored and recalled instantly. The 120 ltr/min cooling water circuit is distributed through independently valved circuits for the mold body and the base plug, allowing differential cooling where the container geometry requires it. For operations in Colombia and other tropical markets where ambient temperatures affect utility performance, the separate cooling circuit control allows compensation without compromising container quality.

Toepassingsscenario's

The JS-2C366(20L) bottle blow molding machine is optimised for large-format container applications where the combination of volume, wall integrity, and closure-sealing precision determines commercial viability. The following categories represent the primary applications where this blow molding machine for sale provides the strongest operational fit.

Choosing the Right Blow Molding Machine for Large-Volume Container Production

Selecting a blow molding machine for large-format containers requires careful evaluation of parameters that are often less prominent in small-format machine procurement. The following considerations should guide the selection process.

1. Stretching Stroke vs. Container Height. The maximum container height a blow molding machine can produce is determined by its stretching stroke — not by mold height alone. The JS-2C366(20L)'s 620 mm stretching stroke sets the upper limit for axial preform extension, accommodating containers up to 480 mm tall. If your largest container format falls outside this range, no adjustment to mold design will compensate for insufficient stroke length. Confirm that your tallest SKU's internal container height is within the machine's stated stroke capacity before committing to a specification.

2. Air Supply Dimensioning. At 12,500 ltr/min high-pressure air consumption, the JS-2C366(20L) has the highest demand in the ES series by a considerable margin. Specifying the compressor for this machine is not a standard calculation — at high altitude locations such as those common in Colombia and the Andean agricultural belt, compressor output must be derated for air density. Engage your compressor supplier with the machine's stated consumption at the actual installation altitude before finalising the compressor specification.

3. Two-Step vs. Extrusion Blow Architecture. Understanding what are the different types of blow molding machines is essential when specifying for large containers. For PET containers in the 5–20 litre range requiring biaxial orientation and chemical barrier performance, the two step blow molding machine approach — injection-moulded preform plus separate stretch-blow — delivers superior wall uniformity and material properties compared with extrusion blow molding. For HDPE containers where biaxial orientation is not required, an extrusion blow molding machine may be an appropriate alternative. Confirming which material and orientation requirement your container specification demands should precede machine selection.

4. Cooling Water Flow Rate. The 120 ltr/min cooling water demand of the JS-2C366(20L) is significantly higher than the smaller ES models. Verify that your site's chiller or cooling tower can supply this flow rate at the required temperature (8–12°C) without degrading the thermal performance of other production equipment sharing the same circuit.

Compatible Auxiliary Equipment

The JS-2C366(20L) is designed for integration within a complete production system. We supply and recommend the following auxiliary equipment, each selected for compatibility with the machine's utility requirements and production characteristics — providing a genuine one-stop supply advantage for buyers who prefer a single accountable supplier for the entire blow moulding system.

Over ons

We are a blow molding machine manufacturer with over twenty years of specialist experience in stretch-blow container production systems, covering equipment from the smallest cosmetic packaging machines through to the large-volume industrial and agrochemical container platforms represented by the JS-2C366(20L) Blow Molding Machine. Our engineering team has developed and patented advances in preform heating efficiency, servo-controlled stretch mechanics, and high-pressure air management — each one the result of solving a real production problem identified in close collaboration with customers operating in demanding industrial and agricultural packaging environments.

Our export footprint extends across more than 50 countries. In Latin America — including Colombia, Brazil, Argentina, and Chile — we have an established installed base of large-format and standard blow molding machine systems serving both agricultural and industrial chemical packaging operations. Regional partners hold local stock of critical wear and replacement parts, providing rapid-response support that minimises production stoppages in markets where long machine downtime has a direct impact on seasonal agrochemical supply chains.

Each machine dispatched from our facility has completed a minimum 72-hour continuous factory acceptance test, with container samples from each cavity and a full production data record provided to the buyer before shipment. This standard applies to the JS-2C366(20L) as it does to every other model in the range — because a blow molding machine operating in an agrochemical packaging plant in Colombia should arrive at site as a proven production tool, not a prototype.

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