With the global condiment market expanding steadily, packaging quality and production efficiency have become key factors for manufacturers to stand out in fierce competition. HDPE (High-Density Polyethylene) is widely recognized as the optimal material for condiment packaging, thanks to its outstanding properties—excellent resistance to chemicals, impact, and leakage, as well as compliance with international food safety standards. It is perfectly suited for packaging various condiments, such as soy sauce, vinegar, edible oil, chili sauce, and salad dressing. To meet the growing demand for mass production of high-quality HDPE condiment bottles, our company has independently developed and upgraded the Double Station Four Die Head Extrusion Blow Molding Machine, integrating cutting-edge extrusion technology, intelligent control systems, and humanized design. This machine not only breaks through the efficiency bottleneck of traditional equipment but also ensures stable product quality, providing global condiment packaging manufacturers with a cost-effective and competitive production solution.
1. Core Design: Double-Station & Four-Die Head for Unmatched Production Efficiency
The most distinctive feature of this machine is its innovative double-station and four-die head integrated design, which is specifically tailored to the large-batch production characteristics of condiment bottles. Unlike traditional single-station or single-die head blow molding machines that have long idle time during mold opening, demolding, and feeding, our double-station structure realizes alternating cycle operation—while one station is engaged in blow molding and cooling of the bottles, the other station completes mold opening, demolding, and raw material feeding simultaneously. This seamless connection eliminates idle time in the production process, maximizing the utilization rate of the equipment.
Equipped with four independent and precision-manufactured die heads, the machine can produce four HDPE condiment bottles in a single production cycle. For standard condiment bottles with a capacity of 200ml to 500ml (the most common specification in the market), the maximum production capacity can reach 7,500 bottles per hour. This efficient design not only reduces the unit production time of each bottle but also minimizes labor input—one operator can easily control the entire production line, significantly reducing labor costs for enterprises. Whether it is a large-scale condiment enterprise with annual output of millions of bottles or a medium-sized packaging factory that needs flexible production, this machine can perfectly meet the production demand.
2. Advanced Extrusion System: Optimized for HDPE Material to Ensure Stable Molding
To fully exert the performance advantages of HDPE material and ensure the quality of finished condiment bottles, we have optimized the extrusion system of the machine based on the physical and chemical properties of HDPE. The extrusion system adopts a φ65mm high-quality alloy steel screw with an L/D ratio of 30:1, which is经过 special surface nitriding treatment to enhance wear resistance and corrosion resistance, extending the service life of the screw by more than 30% compared to ordinary screws.
The screw is designed with a barrier flight structure and a MADDOCK mixing zone, which can fully melt, mix, and plasticize HDPE particles, even if the raw material contains a small amount of recycled material (conforming to food-grade standards), it can still form a uniform and stable viscous flow state. The barrel and die heads adopt segmented temperature control technology—there are 4 heating zones for the screw and 3 independent heating zones for each die head, with a temperature control range of 160℃ to 220℃ and an error of less than ±2℃. This precise temperature control effectively avoids material degradation caused by overheating or uneven plasticization caused by insufficient temperature, ensuring the transparency, smoothness, and structural strength of the finished bottles. In addition, the die heads adopt a torpedo design with double spider support legs, and the gap between the core rod and the die can be adjusted steplessly, which can accurately control the wall thickness uniformity of the parison, effectively preventing bottle deformation, leakage, or rupture during filling, capping, and long-distance transportation.
3. Precision Mold Clamping System: Adapt to Diverse Condiment Bottle Designs
The mold clamping system is the key part to ensure the molding accuracy of condiment bottles. Our machine is equipped with a hydraulic mold clamping system with a clamping force of 100kN to 140kN, which can provide stable and uniform clamping force to prevent parison overflow during the blow molding process. The mold platen size is 300×600mm, which is compatible with various mold designs for condiment bottles, including round, square, rectangular, and special-shaped bottles. It can also be customized according to customer needs to match different neck sizes, thread specifications (such as screw caps, press caps, or flip caps), and bottle capacities (ranging from 100ml to 1000ml), fully meeting the diverse packaging needs of different condiment products.
The mold closing mechanism adopts a multi-link self-locking design, which not only ensures stable clamping force but also realizes fast mold closing and opening speed, shortening the molding cycle. The hydraulic system adopts imported Rexroth valves and high-pressure hoses, which have the advantages of fast response, low noise, and low energy consumption. In addition, the mold is equipped with a built-in spiral cooling water channel and evenly distributed exhaust grooves—the cooling water channel can accelerate the cooling and solidification of the bottles, reducing the molding cycle by 15% to 20%, while the exhaust grooves can discharge the air in the mold in time, avoiding air bubbles, indentations, and other defects on the surface of the finished bottles, ensuring the dimensional accuracy and appearance quality of each bottle.
4. Intelligent Control & Easy Operation: Reduce Labor Costs and Improve Production Stability
In order to adapt to the needs of modern automated production and reduce the difficulty of operation, our machine is equipped with a high-performance PLC (Programmable Logic Controller) control system and a 10-inch color touch screen operation interface. The interface is designed in English (supporting multi-language customization) and has a simple and intuitive layout, allowing operators to easily complete parameter setting, real-time monitoring, and fault query without professional training.
Key production parameters such as extrusion speed, blow pressure (0.6-0.8MPa), cooling time, mold clamping speed, and die head temperature can be adjusted steplessly according to the specifications of the condiment bottles, and the system supports storage of up to 50 sets of product parameters. When switching between different product models, operators only need to recall the corresponding parameter group, which greatly shortens the debugging time. The machine is also equipped with imported electrical components, including TE frequency converters, Omron relays, and Siemens sensors, which ensure the stable operation of the whole system, reduce the failure rate to less than 2% per year, and minimize maintenance costs and production downtime for enterprises.
5. Safety & Environmental Protection: Comply with Global Standards for Green Production
We attach great importance to the safety of operators and environmental protection requirements, and have incorporated relevant designs into every detail of the machine. The equipment is equipped with a full set of safety protection devices, including emergency stop buttons (installed on both sides of the machine), safety doors with interlock devices, and anti-collision sensors. When an abnormality occurs (such as door opening during operation or equipment failure), the machine will automatically shut down to protect the personal safety of operators and the integrity of the equipment.
In terms of environmental protection and energy conservation, the machine adopts an optional servo energy-saving hydraulic system, which can reduce power consumption by 20% to 30% compared to traditional hydraulic systems. The optimized air circulation design reduces compressed air consumption to 1.5-2.5 m³/min, further reducing production costs. In addition, the machine supports the production of lightweight HDPE condiment bottles—under the premise of ensuring product strength and leak-proof performance, it can reduce raw material usage by 8% to 12%, and the finished bottles are 100% recyclable, complying with EU, US, and other global environmental protection standards, helping enterprises achieve green production and enhance their market competitiveness in environmental protection.
6. Versatility & Comprehensive After-Sales Service: Create Long-Term Value for Customers
While the machine is mainly designed for the production of HDPE condiment bottles, it also has strong versatility. It can process other thermoplastic materials such as PP (Polypropylene), which is suitable for producing a variety of packaging products, including detergent bottles, milk bottles, small food containers, and cosmetic bottles. The machine can also produce single-layer or multi-layer (2-3 layers) bottles with oxygen and UV-blocking layers—the multi-layer structure can effectively prevent the oxidation and light-induced deterioration of condiments, extending the shelf life of condiments by 30% to 50%, which is an essential feature for high-end condiment packaging.
As a professional foreign trade manufacturer of plastic processing machinery with more than 10 years of experience, we adhere to strict quality control standards. Each component of the machine undergoes rigorous inspection and testing before assembly, and the whole machine is subject to a 72-hour continuous operation test to ensure stable performance and reliable quality. We provide comprehensive after-sales services for global customers, including free installation guidance, on-site operation training, 1-year free warranty, and permanent spare parts supply. Our professional technical team can provide 24-hour online technical support to solve any problems encountered by customers in the production process in a timely manner.
Conclusion
Our HDPE Condiment Bottles Double Station Four Die Head Extrusion Blow Molding Machine is a high-efficiency, stable, and cost-effective production equipment that integrates advanced technology, intelligent control, and environmental protection concepts. It perfectly solves the pain points of low efficiency, unstable quality, and high cost in the production of traditional condiment bottles, and can provide strong support for condiment packaging manufacturers to expand production scale, improve product quality, and reduce production costs. Whether you are a small and medium-sized enterprise looking to upgrade equipment or a large-scale manufacturer pursuing industrial upgrading, we can provide customized solutions according to your specific needs. We are committed to cooperating with global customers to create greater value and jointly promote the development of the condiment packaging industry.
