In the dynamic world of plastic manufacturing, our PET Preform Injection Molding Machine stands as a paragon of innovation, precision, and high - performance. Designed with the latest technology and engineered to meet the most demanding production requirements, this machine is the ideal choice for businesses looking to produce high - quality PET preforms efficiently.
Working Principle
The PET Preform Injection Molding Machine operates on a well - established principle. First, PET resin pellets are fed into the hopper of the machine. These pellets then enter the heated barrel, where they are melted by the action of a rotating screw. The screw not only melts the resin but also compresses and conveys it towards the nozzle. Once the required amount of molten PET is accumulated at the front of the screw, the screw moves forward rapidly, injecting the molten plastic into the preform mold cavities with high pressure. The mold, which is precisely designed to the shape of the desired preforms, is cooled by a circulating coolant system. This rapid cooling solidifies the PET, giving the preforms their final shape. After a short cooling time, the mold opens, and the ejector system pushes the solid preforms out of the mold cavities, ready for further processing.
Design Features
- Special Screw and Barrel Design: Our machine features a big - diameter screw with a longer L/D ratio. This design is optimized for better plasticizing of the PET material. The longer L/D ratio ensures that the PET resin is thoroughly melted and homogenized, resulting in high - quality preforms with consistent wall thickness and excellent clarity.
- High Plasticization Capacity: With advanced engineering, our PET preform injection molding machine offers a high plasticization capacity. It can melt and process up to 500 kilograms of PET resin per hour, significantly increasing the overall production efficiency. Whether you are running a small - scale production line or a large - scale manufacturing plant, the high plasticization capacity of our machine can meet your production demands.
- Extended Machine Framework and Enlarged Spaces: The machine has an extended framework, along with an enlarged space between tie - bars. The distance between tie - bars is 1200mm, providing enough room to install and operate molds of different sizes and configurations. The long mold opening stroke of 800mm and an adjustable mold thickness from 300mm to 600mm make the machine highly adaptable. It also provides better accessibility for maintenance and cleaning, reducing downtime and increasing the machine's lifespan.
- Precise Temperature Control: The barrel of the machine is equipped with a four - stage or above precise temperature PID control system. This system ensures that the temperature of the molten PET is accurately regulated within a range of ±1°C, which is crucial for maintaining the quality of the preforms. Precise temperature control helps to prevent issues such as over - heating or under - heating of the resin, which can lead to defects in the preforms.
- Enlarged Eject Stroke and Eject Force: To accommodate different preform designs and sizes, our machine offers an enlarged eject stroke of 300mm and an eject force of 50 tons. This allows for the smooth ejection of preforms from the mold cavities without causing any damage to the preforms. Whether you are producing small or large preforms, the powerful ejector system of our machine can handle the task efficiently.
- Bigger Nozzle Hole: The nozzle of the machine has a bigger hole with a diameter of 20mm, which is specifically designed for the injection of PET material. The larger nozzle hole enables the molten PET to flow more freely into the mold cavities, reducing the pressure required for injection by approximately 20% and minimizing the risk of nozzle blockages. This results in a more stable and efficient injection process.
- Powerful Motor and Oil Pump: Our PET preform injection molding machine is equipped with an enlarged motor power of 30kW and an oil pump displacement of 120cc/rev. This combination ensures a faster cycle time, as the machine can quickly move the screw, inject the molten plastic, and open and close the mold. The high - power motor and oil pump also contribute to the machine's ability to handle high - pressure injection, which is essential for producing high - quality preforms.
Applications
- Beverage Industry: The PET preform injection molding machine is widely used in the beverage industry for producing preforms for water bottles, soda bottles, juice bottles, and other beverage containers. The high - quality preforms produced by our machine can be easily blow - molded into bottles that are lightweight, strong, and transparent, making them perfect for packaging beverages.
- Food Packaging: In the food packaging sector, PET preforms are used to create containers for various food products, such as sauces, dressings, and snacks. The excellent barrier properties of PET make it suitable for preserving the freshness and quality of food products. Our machine can produce preforms with precise dimensions and smooth surfaces, ensuring that the final food packaging products are hygienic and visually appealing.
- Cosmetics and Personal Care: PET preforms are also commonly used in the cosmetics and personal care industry for packaging products like shampoo bottles, lotion bottles, and perfume bottles. The ability to produce preforms with intricate designs and high - quality finishes makes our machine a popular choice for companies in this industry. The lightweight and durable nature of PET containers also make them convenient for consumers to use and transport.
- Pharmaceutical Industry: In the pharmaceutical industry, PET preforms are used to manufacture containers for medications. The strict quality requirements of the pharmaceutical industry demand preforms that are free from contaminants and have consistent quality. Our PET preform injection molding machine is designed to meet these high - standard requirements, producing preforms that can be used to create safe and reliable pharmaceutical packaging.
Technical Parameters
- Clamping Force: Our machines are available with a range of clamping forces, starting from 100 tons and going up to 500 tons. The appropriate clamping force depends on the size and complexity of the preforms you want to produce. A higher clamping force is required for larger preforms or preforms with complex geometries to ensure that the mold remains closed during the high - pressure injection process.
- Injection Capacity: The injection capacity of our PET preform injection molding machines ranges from 50 grams to 500 grams. This allows you to choose a machine that can produce preforms of different sizes. Whether you need to produce small preforms for vials or large preforms for gallon - sized containers, we have a machine that can meet your needs.
- Number of Cavities: Our machines can be configured to run molds with different numbers of cavities, such as 16 cavities, 24 cavities, 32 cavities, 48 cavities, and 72 cavities. The number of cavities you choose will depend on your production volume requirements. A higher number of cavities means that more preforms can be produced in a single cycle, increasing the overall production output.
- Cycle Time: The cycle time of our machines is typically very short, ranging from 10 seconds to 25 seconds. This fast cycle time is achieved through the efficient design of the machine's components, such as the powerful motor, oil pump, and precise control system. A shorter cycle time means that more preforms can be produced in a given time period, improving the productivity of your manufacturing process.
- Power Consumption: Our machines are designed to be energy - efficient, with power consumption ranging from 15 kW to 40 kW. We understand the importance of reducing energy costs in today's manufacturing environment, and our machines are engineered to minimize power consumption without sacrificing performance.
Our Company Advantage
- Rich Experience: Our company has over 20 years of experience in the design, manufacture, and sale of PET preform injection molding machines. We have a team of highly skilled engineers and technicians who are well - versed in the latest technologies and trends in the plastic manufacturing industry. Our experience allows us to provide our customers with reliable and high - quality machines that are tailored to their specific needs.
- Customization Options: We understand that every customer has unique requirements. That's why we offer a wide range of customization options for our PET preform injection molding machines. Whether you need a machine with a specific clamping force, injection capacity, or number of cavities, we can customize the machine to meet your exact specifications.
- Mold Trial Testing Service: Before shipping the machine to our customers, we offer a mold trial testing service in our factory. When the machine is finished, we will arrange a mold trial testing of the customer's mold in the machine in our workshop. The customer can choose to come and watch the test running on the spot. If the customer is unable to come, we will take clear photos and videos of the testing and send them to the customer for checking. This ensures that the customer's mold can be run successfully on the ordered machine before shipment, reducing the risk of any issues at the customer's site.
- After - Sales Support: Our commitment to our customers doesn't end with the sale of the machine. We provide comprehensive after - sales support, including technical assistance, spare parts supply, and maintenance services. Our team of experts is always available to answer any questions or resolve any issues that our customers may encounter with their machines.
In conclusion, our PET Preform Injection Molding Machine is a state - of - the - art equipment that offers precision, efficiency, and quality. With its advanced design features, wide range of applications, and excellent technical parameters, it is the perfect choice for businesses in the plastic manufacturing industry. Whether you are a small - scale start - up or a large - scale manufacturer, our machine can help you achieve your production goals and stay ahead in the competitive market. Contact us today to learn more about our PET preform injection molding machines and how we can assist you in your plastic manufacturing endeavors.
