Blow Molding Machine
Why choose us?
About Us
TNN Group was established in 1998 and has been in business for over 20 years. Our headquarters are in Dalian, Liaoning, China, known for its beautiful coastline. We currently employ 33 people and have a network that includes offices, cooperative laboratories, independent e-commerce platforms, three overseas companies, two domestic offices, and two subsidiaries.
Certificates
We hold several certifications, including ISO9001, CE, EU GMP, Halal, and Kosher.
Production Lines
We operate five production lines with a monthly capacity of 10 million pieces.
Quality Assurance
We follow strict processes to ensure a pass rate of over 99%.
After-Sales Service
We provide world-class products with fast delivery and secure payment options to customers around the globe.
Product Range
Our products include filling and capping machines, labeling machines, crown caps, pull ring caps, RingTab caps, glass bottles, various labels, PET preforms, and PE films.
What is Blow Molding Machine
Blow molding machine is also known as hollow blow molding, is a kind of rapid development of plastic processing methods. Blow molding machine is a machine which blow the plastic to the mould cavity with certain shape using wind when the liquid plastic start to spry out.
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Principle of Blow Moulding Machines
Parison Extrusion: The first step in blow moulding is the extrusion of a parison. In this process, plastic resin, in the form of small pellets or granules, is melted and forced into a hollow tube shape through an extruder. The extruded plastic tube, still hot and malleable, is then captured by the machine’s clamping unit.
Moulding: Once the parison is securely held in place, the mould closes around it, creating a cavity in the desired shape of the final product. The machine then uses compressed air to blow the parison, expanding it against the walls of the mould. The hot plastic conforms to the exact shape of the mould, taking on its form.
Product Ejection: After the plastic has cooled and solidified within the mould, the machine opens the mould and releases the finished product. The product is carefully ejected, and the process is ready to repeat for the next cycle.
Blow Molding Machine Common Problems and Maintenance Plans
Blow molding machines play an important role in the production of plastic products, especially containers and packaging materials. However, like all industrial equipment, blow molding machines may encounter various problems during operation. Understanding these common problems and their maintenance measures is crucial to ensuring stable operation and extending the service life of the equipment.
The plastic melt has uneven color or impurities
Cause: Impure raw materials, uneven heating temperature, or too high temperature.
Maintenance: Clean the barrel and screw regularly to ensure the use of pure raw materials, and adjust the heating temperature.
The wall thickness of the product is uneven
Cause: Improper mold temperature control, mold misalignment, or uneven air blowing.
Maintenance: Check and adjust the mold temperature, ensure proper mold alignment, and adjust the blowing pressure and time.
The product shrinks or deforms
Cause: Uneven cooling or premature demolding.
Maintenance: Optimize the cooling system to ensure uniform cooling, and adjust the demolding time.
Low production efficiency
Cause: Aging equipment and suboptimal parameter settings.
Maintenance: Regularly inspect and service the equipment, and optimize parameter settings for improved efficiency.
Types of Blow Molding Machines
Blow molding machines can be classified into several types, depending on the specific requirements of the manufacturing process. These include extrusion blow molding, injection blow molding, and stretch blow molding machines.
Extrusion Blow Molding Machines:
Extrusion blow molding machines are the most common type used in the industry. They work by melting plastic resin, usually high-density polyethylene (HDPE), and extruding it into a hollow tube called a parison. The parison is then captured within a mold, and compressed air is blown into it to expand and take the shape of the mold cavity. This technique allows for high production rates and is ideal for manufacturing large quantities of containers such as bottles, drums, and jerry cans.
Injection Blow Molding Machines:
Injection blow molding machines are primarily used for producing small and intricate products, such as medical vials, inhalers, and cosmetics containers. This process begins by injecting molten plastic into a mold cavity, similar to injection molding. Once the plastic part is solidified, the mold opens, and the preform is transferred to a blow mold. Compressed air is then introduced to stretch and shape the plastic into the desired form.
Stretch Blow Molding Machines:
Stretch blow molding machines are specifically designed for the production of PET bottles, commonly used in the beverage industry. The process begins by injecting molten PET into a preform mold. The preform is then transferred to a stretch blow mold, where it is reheated and stretched in both length and diameter using a core rod. Finally, compressed air is blown into the stretched preform to shape it into the final bottle form. This type of blow molding machine offers excellent clarity and durability for PET bottles.
Advantages of Using a Blow Molding Machine for Manufacturing Products
Blow molding is a manufacturing process used to create hollow objects such as bottles, containers, and other types of plastic products. Here are some advantages of using a blow molding machine for manufacturing products:
Cost-Effective: Blow molding is a cost-effective manufacturing process compared to methods such as injection molding or rotational molding. It requires fewer materials and less energy, resulting in lower production costs.
Versatility: Blow molding can be used to create a wide range of products in different shapes and sizes. The process is versatile enough to accommodate various materials, including thermoplastics, thermosetting plastics, and elastomers.
Efficiency: Blow molding is an efficient process that can produce a large number of products quickly. It has a high production rate, allowing manufacturers to produce items faster than with other manufacturing processes.
Strength and Durability: Products created through blow molding are known for their strength and durability. They are resistant to impact, temperature, and other environmental factors.
Customization: Blow molding allows for significant customization of products. It is possible to adjust the size, shape, and color of products to meet specific customer needs.
Environmentally Friendly: Blow molding is an environmentally friendly process since it uses less material and produces less waste compared to other manufacturing methods.
Consistency: Blow molding machines can produce consistent products, with each item having the same dimensions, shape, and thickness.
Key Components of Blow Molding Machines
Blow molding machines have several fundamental parts as discussed below:
Extruder
Converts plastic resin into molten parisons that are fed into molds.
01
Mold
Shapes the final products and holds the parisons during inflation.
02
Clamping Unit
Keeps together halves or sections of mold while blowing occurs.
03
Blow Pin
It inflates the pre-form by being inserted in its piece with compressed air
04
Cooling System
It cools and solidifies molded part for ejection from mold.
05
Blow molding machines are widely used in various industries and have further optimized blow molding technology to produce multi-layer plastic industrial containers with various shapes and complex structures.
Automatic blow molding machines are commonly used in the food and cosmetics packaging industries. This includes packaging for food, cosmetics, pharmaceuticals, and other daily products. Examples of packaging items produced by blow molding include beverage bottles, milk bottles, plastic boxes, cosmetic containers of various shapes, and medicine bottles of different sizes.
In the transportation industry, blow molding machines are employed to produce various road traffic facilities with diverse uses and shapes. These include collision-resistant buckets, water barriers, roadblocks, warning columns, enclosures, and pallets.
Blow molding machines are also utilized in public environmental facilities, known as environmental protection facilities. They can produce items such as mobile toilets and septic tanks.
In the chemical industry, blow molding machines are used to create containers for holding chemical liquids. This includes double-ring barrels, IBC (Intermediate Bulk Container) totes, and other chemical storage solutions.
In addition to the industries mentioned, blow molding machines can also produce products for other fields, such as plastic parts, plastic pipes, and plastic films.
9 Useful Tips for Blow Molding Machine Selection
Size Matching: Ensure the product specifications align with the machine model. Refer to the maximum size limits in the machine specification chart to confirm compatibility.
Custom Programming: If you have specific requirements regarding the size, capacity, shape, weight, or average output of the products you need, provide this information to the supplier. They can then recommend a blow molding machine that offers economic efficiency based on your needs. It is advisable to have some relevant knowledge before selecting a machine to make an informed decision based on your actual requirements.
Production Capacity: Estimate your required monthly production capacity and verify with the supplier if their machine can meet this requirement. It is recommended to allow for an additional 25% capacity to accommodate any unforeseen needs.
Other Parts Specifications: The mold clamping force is critical for your production. Additionally, consider the accumulator head type machine; the accumulator shot is also important.
Machine Automation: Machine automation can be achieved through PLC control or wired relay logic. PLC control offers a wide range of options, from customized microprocessor controllers to established industrial control systems.
Auxiliary Machinery: Pay attention to auxiliary machinery, which is crucial when selecting a blow molding machine. Choose auxiliary equipment based on the supplier's recommendations, such as air compressors, grinders, and cooling systems.
Quality Checking: During machine testing, check for safety, technological performance, and any signs of abrasion or damage on the machine's appearance.
Cost Performance: This is a key consideration when selecting a blow molding machine. Do not prioritize low cost at the expense of performance. Opt for a machine with high cost performance. Many customers are attracted to low prices but end up incurring losses. Higher-quality machines may have a higher upfront cost but offer better reliability and energy efficiency, leading to long-term savings.
After-Sales Service: Clearly understand the after-sales service provided by the supplier. This ensures your benefits are protected and helps avoid unnecessary losses and issues. Yankang has an experienced engineering team and after-sales staff who can handle installation and debugging. We also offer door-to-door service if needed. Excellent after-sales service can minimize losses and provide professional solutions.
Factors Affecting the Service Life of Blow Molding Machines
Blow molding machines are widely used due to their excellent product quality and performance, leading to an increase in sales. These machines are known for their relatively long service life. However, several factors can affect their longevity.
Temperature and humidity do not significantly impact the service life of blow molding machines. Instead, the following factors play a more crucial role:
Adherence to Proper Usage: Using the blow molding machine according to the correct methods, operating procedures, and specifications is essential. Deviations from recommended practices can reduce the machine's service life.
Product Quality and Usage Frequency: The quality of the products being manufactured and the frequency of machine use can also influence its service life. High-quality products and consistent, moderate use are generally beneficial.
Correct Operation: Long-term incorrect operation of the blow molding machine can lead to malfunctions and damage. Ensuring proper use and maintenance is vital to avoid such issues and extend the machine's lifespan.
Our Factory
Since 1998, TNN Group has been founded for over 2 decades. Head quarter locates in Dalian -the most beautiful coastal city in Liaoning, China. Currently, TNN has 33 staffs, self-owned offices, cooperative laboratory, independent e-commerce platform, ISO9001 and CE certification, independent trademark and other high-level professional office equipment and institutional certifications, 3 overseas companies, 2 domestic offices and two subsidiaries..
FAQ
The TNN Development Limited is one of the most professional blow molding machine manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy discount blow molding machine made in China here from our factory.
Printing Metal Beer Cap, Small Glass Bottle