1. We need to start from the design aspect and reduce the possibility of dimensional errors through reasonable mold design.
2. Processing surface treatment is also an important part of solving dimensional errors.
3. During the use of the mold, you also need to pay attention to some details to avoid dimensional errors.
4. When encountering dimensional errors, we can also take some adjustment and repair methods to solve them.
2. Processing surface treatment is also an important part of solving dimensional errors.
3. During the use of the mold, you also need to pay attention to some details to avoid dimensional errors.
4. When encountering dimensional errors, we can also take some adjustment and repair methods to solve them.
2024
11
22
Foshan Boguan Rotational Molding needs to follow certain requirements and steps when conducting compressive strength testing to ensure that the test results are accurate and reliable.
The following are the requirements to note when conducting compression strength testing:
1. Test environment preparation:
When testing, you should choose a flat and stable ground for testing to ensure that the test bench is stable and not easy to shake, and to avoid the impact of external factors on the test results.
2. Sample preparation:
Select rotational molding material samples that meet the specification requirements for testing. The samples should be representative and sample preparation and processing should be carried out in strict accordance with relevant standards.
3. Test equipment preparation:
Suitable testing equipment should be selected for compressive strength testing. The testing equipment should be accurate and sensitive to ensure the accuracy of the test data.
4. Test method preparation:
According to relevant standards and requirements, develop detailed testing methods and procedures, including loading speed, loading method, number of tests, etc.
5. Test process control:
During the test process, the test conditions should be strictly controlled to avoid the influence of external factors on the test results and ensure the reliability of the test data.
6. Data recording and analysis:
Test data should be recorded in a timely manner and reasonable data analysis should be performed, including calculating compressive strength, drawing stress-strain curves, etc.
7. Result judgment and reporting:
Make reasonable judgments based on the test results, formulate corresponding improvement measures, write detailed test reports, and archive relevant information.
The following are the requirements to note when conducting compression strength testing:
1. Test environment preparation:
When testing, you should choose a flat and stable ground for testing to ensure that the test bench is stable and not easy to shake, and to avoid the impact of external factors on the test results.
2. Sample preparation:
Select rotational molding material samples that meet the specification requirements for testing. The samples should be representative and sample preparation and processing should be carried out in strict accordance with relevant standards.
3. Test equipment preparation:
Suitable testing equipment should be selected for compressive strength testing. The testing equipment should be accurate and sensitive to ensure the accuracy of the test data.
4. Test method preparation:
According to relevant standards and requirements, develop detailed testing methods and procedures, including loading speed, loading method, number of tests, etc.
5. Test process control:
During the test process, the test conditions should be strictly controlled to avoid the influence of external factors on the test results and ensure the reliability of the test data.
6. Data recording and analysis:
Test data should be recorded in a timely manner and reasonable data analysis should be performed, including calculating compressive strength, drawing stress-strain curves, etc.
7. Result judgment and reporting:
Make reasonable judgments based on the test results, formulate corresponding improvement measures, write detailed test reports, and archive relevant information.
2024
11
21
Rotational molding manufacturers need to ensure the stability of the production process level to ensure product quality and production efficiency.
1. Rotational molding manufacturers need to do a good job in equipment maintenance and upkeep to ensure the normal operation of the equipment.
Regularly check various components of the equipment to detect and repair faults in a timely manner to ensure the stability and reliability of the equipment.
In addition, the equipment needs to be cleaned and lubricated regularly to ensure smooth and stable operation of the equipment.
2. Rotational molding manufacturers need to establish strict production processes to ensure that every production link is carried out in accordance with prescribed procedures.
From the procurement of raw materials to the packaging of finished products, each link requires clear operating procedures and quality standards to ensure product consistency and stability.
3. Rotational molding manufacturers also need to provide professional training and technical guidance to their employees to improve their technical level and work quality.
Only with professional training and guidance can employees master the production process.
Be proficient in operating equipment, accurately control production parameters, and ensure product quality and stability.
4. Rotational molding manufacturers need to establish a strict quality control system and conduct comprehensive monitoring and testing of the production process.
Quality inspections are conducted at every production link to ensure that products meet standards and customer requirements.
For substandard products, discover and deal with them in time to prevent defective products from flowing into the market.
1. Rotational molding manufacturers need to do a good job in equipment maintenance and upkeep to ensure the normal operation of the equipment.
Regularly check various components of the equipment to detect and repair faults in a timely manner to ensure the stability and reliability of the equipment.
In addition, the equipment needs to be cleaned and lubricated regularly to ensure smooth and stable operation of the equipment.
2. Rotational molding manufacturers need to establish strict production processes to ensure that every production link is carried out in accordance with prescribed procedures.
From the procurement of raw materials to the packaging of finished products, each link requires clear operating procedures and quality standards to ensure product consistency and stability.
3. Rotational molding manufacturers also need to provide professional training and technical guidance to their employees to improve their technical level and work quality.
Only with professional training and guidance can employees master the production process.
Be proficient in operating equipment, accurately control production parameters, and ensure product quality and stability.
4. Rotational molding manufacturers need to establish a strict quality control system and conduct comprehensive monitoring and testing of the production process.
Quality inspections are conducted at every production link to ensure that products meet standards and customer requirements.
For substandard products, discover and deal with them in time to prevent defective products from flowing into the market.
2024
11
20
1. Product geometry and size measurement
2. Physical performance test
3. Appearance and color measurement
4. Chemical testing
5. Temperature resistance and corrosion resistance test
6. Environmental pollution testing
2. Physical performance test
3. Appearance and color measurement
4. Chemical testing
5. Temperature resistance and corrosion resistance test
6. Environmental pollution testing
2024
11
19
Waterproof and dustproof: The rotomolded medical box adopts a sealed design, which can effectively prevent the infiltration of dust and moisture and ensure the dryness and cleanliness of the internal equipment. This property is especially important in humid or harsh environments, protecting medical devices and pharmaceuticals from moisture and corrosion.
Strong and durable: Rotational molded medical boxes usually use high-strength materials, such as new PE materials or high-density polyethylene, which have high strength and toughness and can withstand large external impacts and pressures. Its solid structure and corrosion resistance allow it to maintain good shape and structure in harsh environments, effectively protecting the contents of the box.
Lightweight and portable: Although the rotomolded medical kit has a sturdy structure, it is relatively lightweight, making it easy to handle and carry. The box is usually equipped with wheels, handles and other designs to facilitate movement and transportation, and is suitable for various medical scenarios.
Versatility: Rotational molded medical boxes can be customized with different sizes and internal structures according to needs to adapt to the storage needs of different medical equipment. In addition, it is equipped with security designs such as anti-theft locks to ensure the confidentiality and safety of medical supplies.
Flexible design: The rotational molding process allows the box to be designed into various shapes and sizes to meet different usage needs. At the same time, the rotational molding box can also be equipped with various inserts, such as handles, locks, linings, etc.
Widely used: Rotational molded medical boxes are widely used in hospitals, clinics, first aid stations and other medical scenarios to ensure the safety, hygiene and effectiveness of medical devices and drugs during transportation and storage.
Strong and durable: Rotational molded medical boxes usually use high-strength materials, such as new PE materials or high-density polyethylene, which have high strength and toughness and can withstand large external impacts and pressures. Its solid structure and corrosion resistance allow it to maintain good shape and structure in harsh environments, effectively protecting the contents of the box.
Lightweight and portable: Although the rotomolded medical kit has a sturdy structure, it is relatively lightweight, making it easy to handle and carry. The box is usually equipped with wheels, handles and other designs to facilitate movement and transportation, and is suitable for various medical scenarios.
Versatility: Rotational molded medical boxes can be customized with different sizes and internal structures according to needs to adapt to the storage needs of different medical equipment. In addition, it is equipped with security designs such as anti-theft locks to ensure the confidentiality and safety of medical supplies.
Flexible design: The rotational molding process allows the box to be designed into various shapes and sizes to meet different usage needs. At the same time, the rotational molding box can also be equipped with various inserts, such as handles, locks, linings, etc.
Widely used: Rotational molded medical boxes are widely used in hospitals, clinics, first aid stations and other medical scenarios to ensure the safety, hygiene and effectiveness of medical devices and drugs during transportation and storage.
2024
11
18
Advantages: 1. Never leak. It is formed in one step using advanced rotational molding technology, without welding and has good sealing performance. 2. Corrosion resistance, high compressive strength and good earthquake resistance. Using brand-new PE materials imported from abroad. 3. Small footprint. This product occupies about 45% of the area of a traditional septic tank, saving land resources and having flexible site selection. 4. The treatment effect is good. Using microbial technology, there is no need to add other chemicals, which is simple and economical. 5. Long service life. This product is resistant to moisture, acid and alkali, oxidation, high and low temperature without deformation, and can be used normally for more than 50 years.
1. Installation
1. Measure the site setting and excavation dimensions according to the models and specifications of various septic tanks required by the customer (about 450mm-500mm wider than the actual size of the product), and connect in series When septic tanks are connected, the spacing between tanks is 400mm, and the excavation depth depends on the height of each type of septic tank. 2. Before digging the trench, power sources, water pumps, measuring instruments and excavation equipment should be prepared, and surrounding protection work should be done.
2. Foundation treatment
1. For general soil quality, a medium-coarse sand foundation layer with a thickness of 100-200mm can be laid on the original soil foundation or the backfilled and compacted foundation. 2. The pits must not be soaked by water. If the pits are indeed soaked by water, all accumulated water and silt in the pits should be removed first, and then be replaced with good dry soil and a medium-coarse sand base layer should be laid.
1. Installation
1. Measure the site setting and excavation dimensions according to the models and specifications of various septic tanks required by the customer (about 450mm-500mm wider than the actual size of the product), and connect in series When septic tanks are connected, the spacing between tanks is 400mm, and the excavation depth depends on the height of each type of septic tank. 2. Before digging the trench, power sources, water pumps, measuring instruments and excavation equipment should be prepared, and surrounding protection work should be done.
2. Foundation treatment
1. For general soil quality, a medium-coarse sand foundation layer with a thickness of 100-200mm can be laid on the original soil foundation or the backfilled and compacted foundation. 2. The pits must not be soaked by water. If the pits are indeed soaked by water, all accumulated water and silt in the pits should be removed first, and then be replaced with good dry soil and a medium-coarse sand base layer should be laid.
2024
11
16
Method 1: First confirm whether the product is a hollow product. If it is not a hollow product or a foamed solid product, then it can basically be ruled out using rotational molding.
Method 2: Look at the product size. The injection molding process does not have such a large mold. If the plastic product to be made is very large and at least one of the dimensions of length, width and height exceeds the capacity of the current blow molding machine, or the width of the thermoformed sheet available in industry, then this kind of Products can only be produced by rotational molding.
Floor washing machine shell
Method 3: Look at efficiency and cost. If the demand for a plastic product is small, the production cost of blow molding will be very high. At this time, the low-cost advantage of rotational molding will be highlighted.
Method 4: Look at the material composition. The raw material of this plastic product is polypropylene, which is difficult to manufacture by thermoforming. If liquid polyvinyl chloride plastisol is used, it needs to be produced by rotational molding.
Method 5: Look at the product structure. If a plastic article contains a closed parallel double-walled structure, rotational molding is the molding method, since thermoforming requires more complex and expensive multifunctional molds. Rotational molding is also the best choice when the wall thickness of the product is required to be uniform or the outer corners need to be strong.
Method 6: Look at the shape. If a plastic product has a complex shape, such as a filter residue container, it is impossible to produce an integral product using blow molding or thermoforming. In this case, it can only be manufactured by rotational molding.
Method 2: Look at the product size. The injection molding process does not have such a large mold. If the plastic product to be made is very large and at least one of the dimensions of length, width and height exceeds the capacity of the current blow molding machine, or the width of the thermoformed sheet available in industry, then this kind of Products can only be produced by rotational molding.
Floor washing machine shell
Method 3: Look at efficiency and cost. If the demand for a plastic product is small, the production cost of blow molding will be very high. At this time, the low-cost advantage of rotational molding will be highlighted.
Method 4: Look at the material composition. The raw material of this plastic product is polypropylene, which is difficult to manufacture by thermoforming. If liquid polyvinyl chloride plastisol is used, it needs to be produced by rotational molding.
Method 5: Look at the product structure. If a plastic article contains a closed parallel double-walled structure, rotational molding is the molding method, since thermoforming requires more complex and expensive multifunctional molds. Rotational molding is also the best choice when the wall thickness of the product is required to be uniform or the outer corners need to be strong.
Method 6: Look at the shape. If a plastic product has a complex shape, such as a filter residue container, it is impossible to produce an integral product using blow molding or thermoforming. In this case, it can only be manufactured by rotational molding.
2024
11
15
Polyethylene (PE) raw materials
PE is widely used in rotational molding processes for a reason:
, PE has a wide processing window and is suitable for long-term high-temperature environments, which reduces the requirements for rotational molding machinery;
Second, at room temperature, PE does not react with water, most greases, acids and alkaline substances, and has a wide range of applications;
Third, PE raw materials are low in cost and easy to promote.
Polypropylene (PP) raw materials
In the consumption structure of synthetic resins, polypropylene is the most common raw material after polyethylene. Compared with polyethylene, polypropylene has the following characteristics:
Low density: The density of PP is roughly between 0.85-0.93, while that of ordinary polyethylene is between 0.91-0.98. One of the reasons is that the crystallinity of PP is lower than that of PE;
Good mechanical properties: The tensile strength and elastic modulus of PP are generally higher than that of PE. At present, the mechanical properties of modified PP can even be comparable to that of PS (polystyrene), and it is widely used in electronic appliances and automobile fields;Good optical properties: Compared with PE, PP has much higher transparency;
PE is widely used in rotational molding processes for a reason:
, PE has a wide processing window and is suitable for long-term high-temperature environments, which reduces the requirements for rotational molding machinery;
Second, at room temperature, PE does not react with water, most greases, acids and alkaline substances, and has a wide range of applications;
Third, PE raw materials are low in cost and easy to promote.
Polypropylene (PP) raw materials
In the consumption structure of synthetic resins, polypropylene is the most common raw material after polyethylene. Compared with polyethylene, polypropylene has the following characteristics:
Low density: The density of PP is roughly between 0.85-0.93, while that of ordinary polyethylene is between 0.91-0.98. One of the reasons is that the crystallinity of PP is lower than that of PE;
Good mechanical properties: The tensile strength and elastic modulus of PP are generally higher than that of PE. At present, the mechanical properties of modified PP can even be comparable to that of PS (polystyrene), and it is widely used in electronic appliances and automobile fields;Good optical properties: Compared with PE, PP has much higher transparency;
2024
11
14
1. Application of innovative technology in rotational molding equipment
Intelligent technology
Internet of things technology
New heating technology
Environmental protection technology
2. Future development trends of rotational molding equipment
Personalization and customization
Efficiency and energy saving
Intelligence and automation
Environmental protection and sustainable development
Intelligent technology
Internet of things technology
New heating technology
Environmental protection technology
2. Future development trends of rotational molding equipment
Personalization and customization
Efficiency and energy saving
Intelligence and automation
Environmental protection and sustainable development
2024
11
12
Advantages and disadvantages of rotational molding aluminum molds:
1. Price advantage: Except for small rotational molds, if medium-sized molds are made with steel plate molds, the mold cost can be saved by at least one-third.
2. Compared with aluminum moulds, steel plate formwork is easier to modify, repair and maintain.
3. Use steel plate mold. Since the wall thickness of the steel plate mold is only 2.5 or 3.0mm, the powder melting time will be shortened during the rotational molding process, which reduces energy consumption to a certain extent.
4. By combining traditional technology with CNC technology, precise rotational molds can be made. In the rotational molding industry, steel plate molds are still widely used.
1. Price advantage: Except for small rotational molds, if medium-sized molds are made with steel plate molds, the mold cost can be saved by at least one-third.
2. Compared with aluminum moulds, steel plate formwork is easier to modify, repair and maintain.
3. Use steel plate mold. Since the wall thickness of the steel plate mold is only 2.5 or 3.0mm, the powder melting time will be shortened during the rotational molding process, which reduces energy consumption to a certain extent.
4. By combining traditional technology with CNC technology, precise rotational molds can be made. In the rotational molding industry, steel plate molds are still widely used.
2024
11
11
1.This innovative technology is based on the basic rotational molding technology of "polyethylene integrated molding, completely seamless". Through secondary proportioning of raw materials and innovative adjustments to the production process, it achieves the perfect combination of product flexibility and rigidity.
2. Innovative adjustment of the production process to achieve perfect combination In the rotational molding process, the adjustment of the production process is crucial. This innovative technology achieves the perfect combination of product flexibility and rigidity through the optimization of the production process. While ensuring the strength of the product, it also improves the impact resistance of the product so that it can remain stable in complex environments.
3. New concave and convex process design to optimize the box structure In product design, the optimization of the box structure is crucial. This innovative technology uses a new concave and convex process design to make all parts of the box more reasonable and effectively improve the product's pressure resistance. At the same time, the concave and convex design also enhances the sealing performance of the product, ensuring that the product can still maintain excellent performance without leakage even if it sinks 150mm to the bottom of the water.
4. Advanced silicone sealing technology to ensure product sealing In the rotational molding process, sealing technology is the key to ensuring product performance. This innovative technology uses advanced silicone sealing technology, which effectively solves the shortcomings of traditional sealing technology. Even when the product sinks 150mm into the water, the silicone sealing technology can still maintain good sealing performance and ensure no leakage of the product.
2. Innovative adjustment of the production process to achieve perfect combination In the rotational molding process, the adjustment of the production process is crucial. This innovative technology achieves the perfect combination of product flexibility and rigidity through the optimization of the production process. While ensuring the strength of the product, it also improves the impact resistance of the product so that it can remain stable in complex environments.
3. New concave and convex process design to optimize the box structure In product design, the optimization of the box structure is crucial. This innovative technology uses a new concave and convex process design to make all parts of the box more reasonable and effectively improve the product's pressure resistance. At the same time, the concave and convex design also enhances the sealing performance of the product, ensuring that the product can still maintain excellent performance without leakage even if it sinks 150mm to the bottom of the water.
4. Advanced silicone sealing technology to ensure product sealing In the rotational molding process, sealing technology is the key to ensuring product performance. This innovative technology uses advanced silicone sealing technology, which effectively solves the shortcomings of traditional sealing technology. Even when the product sinks 150mm into the water, the silicone sealing technology can still maintain good sealing performance and ensure no leakage of the product.
2024
11
09
1. Selection of rotomolding mold. On the same rotational molding machine, if conditions permit, choose the same type of mold. If you want to produce other products of different categories at the same time, when selecting the rotational molding mold, strive to install the molds that are similar in size and the weight difference should not be too great. The thickness requirements are basically the same. This is to avoid product aging and degradation or residual plastic powder, because different rotational molding molds require different processing cycles.
2. The installation distance of rotational molding molds. How many molds should be installed on a mold bracket should be calculated well. There should be enough distance between the molds to avoid blocking each other, which is conducive to the conduction of hot air and also facilitates mold opening and closing.
3. The balance of the mold bracket. This point must be noted. If the bracket is heavy on one side and light on the other, the rotation of the rotomolding machine will be affected. At least it will cause uneven thickness of the product. In serious cases, it will damage the rotomolding machine.
4. Pay attention to the diameter of the oven of the rotational molding machine, and calculate the rotation range when installing the mold, otherwise it will bring adverse consequences.
5. When installing the rotomolding mold, you must consider both the firmness and the speed of installation and disassembly.
2. The installation distance of rotational molding molds. How many molds should be installed on a mold bracket should be calculated well. There should be enough distance between the molds to avoid blocking each other, which is conducive to the conduction of hot air and also facilitates mold opening and closing.
3. The balance of the mold bracket. This point must be noted. If the bracket is heavy on one side and light on the other, the rotation of the rotomolding machine will be affected. At least it will cause uneven thickness of the product. In serious cases, it will damage the rotomolding machine.
4. Pay attention to the diameter of the oven of the rotational molding machine, and calculate the rotation range when installing the mold, otherwise it will bring adverse consequences.
5. When installing the rotomolding mold, you must consider both the firmness and the speed of installation and disassembly.
2024
11
08
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