Since the onset of China's reform and opening up in the 1970s, the packaging machinery manufacturing industry has made significant progress, not only optimizing the domestic industry structure but also gaining prominence on the international stage. This article will review the development trajectory and current status of China's packaging machinery industry, analyze existing challenges, and anticipate future trends.
Starting from the 1970s, the Chinese packaging machinery industry has undergone a process of introduction, digestion, absorption, and independent research and development, gradually maturing over time. Today, China has become a Participating (P) member of the International Organization for Standardization (ISO) Packaging Machinery Standardization Technical Committee, indicating that our country's packaging machinery standardization work has stepped onto the international stage.
However, despite the significant progress made by China's packaging machinery industry, it still faces numerous challenges. Firstly, China's packaging machinery technology is relatively backward, trailing behind developed countries. Secondly, energy consumption in China's packaging machinery is high, leading to significant environmental pressure. Additionally, the variety of packaging machinery products in China is limited, making it difficult to meet diverse demands.
To address these issues, we need to accelerate the pace of alignment with international standards, increase efforts to cultivate talent in international standardization, actively promote the transformation of our country's advantageous technologies into international standards, aiming to elevate China's packaging machinery standardization work to a higher level. Moreover, we should pay attention to the application of new materials, such as the widespread use of plastic packaging materials, which will greatly change the design concepts of packaging machinery.
It is worth noting that the development of packaging machinery is closely related to the innovation of packaging technology. For instance, the ancient Chinese invention of papermaking laid the foundation for the birth of paper packaging. Subsequently, with the decline in paper prices, paper packaging began to be widely used in the food industry. Later on, F. Lee from the United States invented the paper bag machine, leading to the emergence of paper product machinery.
Entering modern society, the development of packaging machinery has been even more rapid. In 1861, Germany established the world's first packaging machinery factory and successfully manufactured a fully automatic form-fill-seal machine in 1911. Subsequently, the United States introduced liquid filling machines and gravity filling machines. P. Durand from the United Kingdom used metal containers to preserve food, giving rise to the appearance of canned packaged food.
In recent years, with the emergence of new materials and continuous breakthroughs in packaging technology, packaging machinery is evolving towards intelligent and green directions. Especially with the rise of supermarkets, higher requirements have been placed on product packaging, which further promotes the improvement and development of packaging machinery.
In summary, although China's packaging machinery industry started relatively late, it has developed rapidly in recent years under various efforts. Despite some shortcomings, we believe that as long as we persist in promoting technological innovation and strengthening international cooperation, China's packaging machinery industry will usher in an even brighter future.
With the rapid development of the food processing and pharmaceutical industries, granule packaging machines have found their niche. Serving as indispensable assistants in food factories, granule packaging machines are crucial for operations but also come with certain safety risks. Therefore, establishing pre-startup inspection procedures is paramount. This article will provide detailed guidance on the effective use and maintenance of granule packaging machines to ensure their safety and stability.
In recent years, the rapid growth of the food processing and pharmaceutical industries has led to the widespread use of granule packaging machines. However, these machines come with certain safety risks during operation, making it essential to use and maintain them correctly.
Firstly, before starting the granule packaging machine, carefully inspect the surrounding environment to ensure no factors that may affect the machine's operation are present. Secondly, during machine operation, maintain a distance and avoid direct contact with moving parts, especially the head, fingers, or other parts of the body. Additionally, inserting any items into the sealing blade area is strictly prohibited to prevent equipment damage.
It is worth noting that during machine operation, avoid frequent mode switching or parameter changes. Also, refrain from continuous high-speed operation and simultaneous pressing of multiple buttons. When performing maintenance and repairs, disconnect the power supply first and carefully consider and cautiously modify before maintenance and debugging.
For the maintenance of granule packaging machines, regularly check the tightness of the belts to prevent decreased output or slipping due to loose belts. After prolonged use, clean the surface of the mold to ensure good sealing effects. After each work session, adjust the pressure roller to loosen the bolts.
Furthermore, the packaging film's edges are equipped with optically controlled black marks, with clear and distinct color contrast. Therefore, no other text or patterns should be printed in this area to avoid triggering misoperations.
Finally, granule packaging machines can be monitored throughout the process via computer, enhancing work efficiency and precision. However, strict adherence to the above precautions is still necessary in actual operations to ensure the safe and stable operation of the equipment, extend its service life, and improve work efficiency.
In the field of commodity circulation, consumers have increasingly higher demands for the packaging of small bagged products. They not only require attractiveness, easy transportation, storage, and convenient use but also demand accurate measurement of the products inside the packaging bags with minimal errors. Therefore, accurate measurement has become a focal point of the packaging industry. This article summarizes and compares volumetric and dynamic weighing measurement device solutions in response to this issue, aiming to provide useful references for relevant practitioners.
The plastic granule packaging machine achieves highly accurate weighing results thanks to its excellent gravity measurement and weight sensor technology. This article will elaborate on the working principle and advantages of the plastic granule packaging machine.
Recently, significant breakthroughs have been made in the research of plastic granule packaging machine technology, which has a profound impact on the industrial sector. This machine fully utilizes advanced gravity measurement and weight sensor technology, resulting in highly accurate weighing results for plastic granules.
The working principle of the plastic granule packaging machine mainly relies on gravity measurement and weight sensors. Firstly, the plastic granules to be weighed are fed into the packaging machine through a feeding device. Then, with the aid of gravity, the plastic granules are delivered to the measuring cup. When the measuring cup reaches the preset weight, the weight sensor detects this change and controls the switch of the feeding device, stopping the delivery of plastic granules. By adjusting the opening and closing time of the feeding device, precise weighing of plastic granules of different weights can be achieved.
In terms of weighing technology, plastic granule packaging machines mainly use the following two techniques:
The advantages of plastic granule packaging machines in weighing are mainly reflected in the following aspects:
With its advanced weighing technology and significant advantages, the plastic granule packaging machine has gradually become an indispensable equipment in modern production. I believe that with the continuous advancement of technology, plastic granule packaging machines will be widely applied in more fields.
We are delighted to introduce to you a high-end technological product - the volumetric quantitative packaging and measuring equipment. This equipment is designed specifically for packaging materials with stable density and small volume. It boasts advantages such as easy operation, fast speed, and low cost, although its precision may be slightly lacking.
The volumetric quantitative packaging and measuring equipment is a precision instrument that utilizes advanced technology. It is suitable for measuring and packaging materials with stable density and small volume. The equipment features a compact structure, easy operation, fast speed, and relatively low cost. However, its precision needs to be improved.
Based on different application scenarios, volumetric quantitative packaging and measuring equipment can be classified into two main types: fixed volume cup type and adjustable volume cup type.
The fixed volume cup type can be further divided into two categories, each suitable for packaging granular and powdery materials respectively. Among them, the granular material packaging equipment mainly consists of a hopper, a measuring cup, a turntable, a scraper, a powder cover, a valve, a shaft, and a frame. The working process is as follows: the turntable drives the measuring cup to rotate. When the measuring cup enters the bin isolated by the scraper, it begins to fill with material, while the hopper also replenishes material until the measuring cup is completely filled. Subsequently, as the measuring cup leaves the bin, the scraper levels the material on its top, ensuring consistent material height in each cup. Finally, when the measuring cup reaches the discharge port, the top valve is opened by the top rod, allowing the material to fall into the packaging bag through the discharge pipe. Once the material falls, the valve is closed again by the top rod, completing the entire measuring process automatically.
The adjustable volume cup type is more suitable for packaging granular or powdery materials where changes in density can significantly affect accuracy. This equipment mainly consists of a hopper, an adjustable measuring cup, a rotating disc, a fixed plate, a scraper, a powder cover, an adjustment mechanism, a control device, and a frame. The working process is as follows: the rotating disc drives the adjustable measuring cup (composed of a fixed cup and an adjustable cup), and the lower scraper rotates with the shaft. When the adjustable measuring cup enters the bottom of the hopper, the material in the hopper automatically fills the cup, and the upper scraper fixed on top levels the cup mouth to ensure no accumulation on the rotating disc and consistent material height in each adjustable measuring cup. Then, when the measuring cup reaches the elongated hole discharge port of the fixed plate, the material in the adjustable measuring cup will fall into the packaging bag. At the same time, the lower scraper fixed at the bottom will scrape the material seeped from the adjustable cup to the discharge port, allowing it to fall into the packaging bag, thus completing the process of automatic metering and discharge.
As a high-end technological product, the volumetric quantitative packaging and metering equipment boasts advantages such as easy operation, fast speed, and low cost. However, its precision falls slightly short. We believe that with the continuous advancement of technology, this equipment will undoubtedly find broader applications, bringing greater economic benefits to businesses.
With technological advancements, traditional methods of quantitative packaging and metering face challenges. Recently, new types of drum-type, plunger-type, and screw-type quantitative packaging and metering equipment have emerged in the market. These devices employ advanced technology to ensure precise metering and rapid dispensing processes, meeting the demands of modern production. Let's delve into the characteristics and advantages of these three types of equipment.
Drum-type quantitative packaging and metering equipment are renowned for their stability and excellent flow properties. This type of equipment mainly includes two forms: fan-shaped drum and cylindrical drum with adjustable volume chambers of trough-shaped cross-section. Among them, the fan-shaped drum equipment consists mainly of a hopper, drum, casing, and clamping mechanism. The working principle is as follows: the drum rotates under the drive of the transmission shaft, and when the fan-shaped groove reaches the feeding pipe, the material flows from the hopper into the fan-shaped groove. When the drum leaves the feeding pipe, the casing scrapes off the excess material to ensure a constant volume of material in the sealed chamber. When the measuring chamber reaches the discharge pipe, the material will enter the packaging bag through the discharge pipe, completing the automatic metering and dispensing process.
Plunger-type quantitative packaging and metering equipment are designed specifically for powder, granular, and viscous materials. This equipment mainly consists of a hopper, casing, plunger, and frame. The working principle is as follows: the plunger undergoes linear reciprocating motion under the action of the drive mechanism. When the plunger moves to the left, the rotary valve rotates clockwise, closing the discharge pipe and opening the feeding pipe, allowing the material to be sucked into the chamber between the plunger and the casing for metering through the feeding pipe. When the plunger moves to the right, the rotary valve rotates counterclockwise, closing the feeding pipe and opening the discharge pipe, pushing the material to the discharge pipe and falling into the packaging bag, completing the automatic metering and dispensing process.
The screw-type quantitative packaging and metering equipment utilize a screw feeder for metering. This equipment mainly consists of a drive device, metering screw, hopper, agitator, and frame. The working principle is as follows: the drive device drives the metering screw and agitator to enter the metering tube from the feeding port, passing through the receiving hopper before falling into the packaging bag, completing the automatic metering and dispensing process.
Conclusion:
The above three types of new quantitative packaging and metering equipment all adopt a discontinuous dispensing method, which is conducive to the transverse sealing of bag packaging while ensuring the consistency between the material volume in the metering chamber and the material volume in the packaging bag. Although they have advantages such as simple structure, flexible operation, fast metering speed, and low cost, manufacturing errors in the metering chamber and changes in material density may still affect the metering accuracy. Therefore, when choosing equipment, comprehensive considerations based on actual conditions should be made to achieve the best results.
Recently, we conducted an in-depth study on the weighing-type dynamic quantitative packaging and metering equipment and found that it performs well when handling materials that are prone to moisture, have uneven particle sizes, or significant variations in density. While this equipment offers high accuracy, it comes with slower operating speeds and higher costs.
Here are our research findings:
Continuous Weighing Measurement: This essentially falls under the category of timed measurement methods, involving monitoring the stability of material flow and transit time. The main instruments used include electronic belt scales and screw scales. Electronic belt scales are suitable for measuring powders and granular materials and consist of components such as hoppers, conveyor belts, scales, and sensors, achieving the goal of stable material flow. Screw scales, on the other hand, are suitable for granular materials that are less prone to adhesion and bridging. They are composed of components such as hoppers, servo motors, screw feeders, baffles, sensors, adjustment controllers, and frames, enabling stable control of material flow.
Application of Weighing-Type Dynamic Quantitative Packaging and Metering Equipment: This type of equipment is mainly used in industries that require precise measurement, such as food, chemical, and pharmaceutical industries. For example, in the food industry, this equipment can be utilized to control the weight of food products, ensuring that the quality of each packaged food meets standards.
Conclusion: Despite the challenges of slow operating speeds and high costs associated with weighing-type dynamic quantitative packaging and metering equipment, its accuracy and stability in handling special materials make it a preferred choice in many industries. We believe that through further research and improvements, these challenges can be addressed, making this equipment more practical and efficient.
In recent years, the quantitative packaging industry has been evolving rapidly. However, traditional volumetric quantitative packaging metering technology is no longer sufficient to meet the growing market demands. In order to address this issue, a new technology called non-continuous weighing-type quantitative packaging metering technology has emerged.
The core of this new technology lies in the closed-loop control system, which accurately controls the amount of material entering the weighing hopper, thus achieving precise measurement. It is particularly suitable for packaging powdered and granular materials.
Non-continuous weighing-type quantitative packaging metering equipment mainly comes in two forms: slot-type vibratory feeding and screw rod feeding. Among them, the slot-type vibratory feeding equipment includes components such as a hopper, slot-type vibrator, weighing hopper, weighing sensor, control system, actuator, and frame. Its working principle is as follows: First, the material in the hopper is controlled to form a certain thickness by adjusting the coarse and fine feeding gates; then, the material flows into the weighing hopper through the vibrating trough and the coarse and fine feeding gates at the end of the trough; finally, the weighing sensor converts the weight of the material into an electrical signal, which is transmitted to the microcontroller control system for comparison with the set value. When the weight in the weighing hopper reaches the set value, the equipment sends out a signal to end the coarse feeding, stops supplying material to the weighing hopper, and starts discharging material into the packaging bag.
On the other hand, screw rod feeding equipment mainly consists of components such as a hopper, stepper motor, weighing hopper, feeding screw rod, weighing sensor, control system, actuator, and frame. Its uniqueness lies in controlling the number of drive pulses of the stepper motor to achieve fast or slow feeding to the weighing hopper, thus achieving dynamic feeding.
Although weighing-type dynamic quantitative packaging metering equipment is more complex in structure, relatively slower in measurement speed, and higher in cost compared to volumetric quantitative packaging metering equipment, it has the following advantages:
In summary, the emergence of non-continuous weighing-type quantitative packaging technology has brought new development opportunities to the quantitative packaging industry. It is believed that in the near future, this technology will be more widely applied, creating greater value for enterprises.
Our team has developed a new type of automatic plastic granule packing machine, representing a revolutionary breakthrough. Its introduction significantly enhances product quality and lays a solid foundation for the company's future development.
In modern industrial production, plastic granules serve as widely used raw materials, where precise measurement plays a crucial role in determining the final product quality. To address this challenge, our team conducted in-depth research and repeated experiments, successfully developing a brand-new automatic plastic granule packaging machine.
This packaging machine consists of four core modules: the conveying system, measuring system, packaging system, and control system. The conveying system transports granular materials from the storage warehouse to the measuring system. The measuring system accurately measures the weight of materials and controls the material discharge accordingly. The packaging system then packs the measured materials into bags or containers according to predefined specifications. Finally, the control system monitors and regulates the operation of the machine throughout the process.
It's worth mentioning that our packaging machine incorporates state-of-the-art weighing devices such as electronic scales or weight sensors to accurately sense the weight of materials, ensuring precise and error-free material discharge every time. Additionally, the packaging system is equipped with advanced equipment such as bag folding machines and automatic weighing and bagging machines, streamlining the entire packaging process for enhanced efficiency and convenience.
In terms of control system, our packaging machine adopts electrical or computer control technology, enabling precise control of each part's operation according to pre-set programs. Moreover, the control system can monitor various data during the packaging process, such as packaging weight, in real-time to promptly detect and address any potential anomalies.
Overall, our automatic plastic granule packaging machine not only achieves precise measurement and packaging of materials but also greatly enhances production efficiency and product quality. We believe that this innovative technology will soon find wider applications, bringing greater economic benefits and social value to our company.