Rich Experience
Taizhou Huangyan Baixing Machinery Co.,Ltd. is a company specializing in manufacturing and developing PET blow molding machine and blow moldings. The Company has been engaged in blow molding industry for more than 20 years.
Quality Service
Before the sale to provide customers with the most appropriate solution, during the exchange will constantly report the production progress. Random free spare parts and machine wil be sent to customers. After sale we will immediately write solutions to reply to customers.
Complete Range Of Products
Currently, Baxing Machinery manufactures the following main products: BX series automatic, manual and semi-automatic two-step blow molding machine and blow moldings with various shapes and specifications.
Global Sales Network
The products are exported to the Philippines, Malaysia, Indonesia, Iraq, Syria, Pakistan, Nigeria, Mexico, Paraguay, Peru, Russia,Cyprus, and other countries and regions.
Automatic blowing machines are a type of blow molding machine that uses hydraulic pressure. Thermoplastic resin, obtained by extrusion or injection molding, is formed into a tubular plastic preform. While still hot (or heated to a softened state), it is placed in an open mold and immediately filled with compressed air in the preform, causing the plastic preform to expand and adhere tightly to the inner wall of the mold. After cooling and demolding, various hollow products are obtained.
The bottle body is milky white, indicating that the temperature of the light box is too high. Adjust the temperature of the corresponding lamp tube according to the whitening position.
The bottle body is blue and stretched white, indicating that the temperature of the light box is low. Adjust the temperature of the corresponding lamp tube according to the whitening position.
Aggregate at the bottle mouth, increase the temperature of the first layer of lamp tube, or close the cooling water outlet valve of the small bottle mouth.
The deformation of the bottle mouth indicates that the temperature of the bottle mouth is too high, so reduce the temperature of the first layer.
The belly button appears at the bottom of the bottle, and the pre-blowing delay is too high, so lower it in units of 0.01S
The bottleneck becomes thicker, and the pre-blowing delay time is too short. Increase the pre-blowing delay in units of 0.01S.
Blow molding is a fairly straightforward process that includes melting, homogenizing, extruding, molding (blowing), cooling, and ejection.
Plastic Resin Feeding Or Charging
The first step in the blow molding process is plastic feeding. This is done by conveying the plastic pellets into the extruder hopper. Vacuum pumps draw pellets from big bags or bulk containers and transfer them into the raw material silos or hoppers. A rotary feeder at the bottom of the silo controls the rate of feeding into the plastifier or extruder. Compressed air is then used to convey the stored pellets to the extruder hopper. In other systems, plastic pellets from big bags or bins can be vacuum conveyed directly to the extruder hopper without the need for a separate conveying air system.
Plasticizing Or Melting
As the plastic resin enters and goes through the extrusion machine, it is melted by continuous kneading and heating. Electric heating elements or heating bands are wrapped around the extruder barrel to provide heat for melting the polymer. The extruder screw has different sections that serve a specific purpose. These are feeding, compressing, and metering. The extruder screw is designed to provide sufficient shearing and compression to homogenize and extrude the plastic.
Parison Extrusion Or Preform Injection
This process is the preparation of the parison or preform to be inflated. This is done by extruding the plastic through free extrusion or injection into a preform mold.
Sealing Or Clamping
Sealing or clamping involves a split die that captures the preform. The ends of the parison (extrusion blow molding) are sealed except for one hole, typically the container opening, where the compressed air will be injected.
Inflation Or Blow Molding
This step is where the plastic takes its form. Compressed air is introduced inside the preform. This inflates the preform until it is molded according to the profile of the die.
Cooling And Ejecting
The next step is the cooling process. Typically, as the plastic touches the die, it cools at a predefined rate which stabilizes the dimensions of the product. After cooling, the mold opens and ejects the product.
Trimming
Flashing is generally evident in extrusion blow molding. Most blow molding machines have auto deflashing features as the dies clamp the preform. But in some instances, flash is present at the top and bottom parts of the product, especially at the opening where compressed air is injected. This excess material is trimmed by a rotating knife. To minimize wastage, some systems collect the excess materials, grind them, and feed them back to the extrusion machine.
Leak Test
This is the typical quality control method used in manufacturing bottles or packaging materials. In this step, either vacuum or compression is generated inside the container. The machine will then check if air enters or escapes the container by monitoring the pressure. If a leak is sensed from the container, it is rejected and fed back into the system.
To ensure the highest quality in blow molding, several vital parameters must be closely monitored:
Perform Quality: Ensure the performance is high quality and free from defects.
Heating Efficiency: Achieving uniform heating for optimal material distribution.
Stretching Consistency: Maintaining consistent stretching to ensure uniform wall thickness.
Air Pressure Control: Precise control of air pressure for proper bottle shaping.
Cooling Systems: Effective cooling systems to maintain bottle integrity and shape.
Here are some benefits:
No waste is Produced
There is no production of extra scrap material.
Better Finishing
The surface finish is brilliant.
Versatility in Design
In any insert related
Sturdy Material
The processed delivers tighter part tolerances that are safe and secure
Exceptional Accuracy and consistency
You don't have to worry about altered shapes. The mold accuracy is brilliant and gives accurate results.
Better Finishing
The products yield more product volume than other methods.
Processable Raw Materials for Automatic Blowing Machine
There is a wide array of raw materials that can be used for blow molding. Blow molding materials are commonly thermoplastics that do not easily degrade upon heating. Blow molding is extensively used in the manufacture of plastic bottles which is why most raw materials have properties suitable for such application. Currently, blow molding is gaining momentum in the transportation, construction, and consumer goods industries. This makes engineering plastics such as polyamides and polycarbonates viable to be blown molded as well.
Polyethylene (PE): Polyethylene is the most widely used blow molding material. Polyethylene has many desirable characteristics such as easy processability, toughness, and flexibility which are retained even at low temperatures, odor and toxin free, excellent clarity, good water barrier properties, good electrical insulation properties, and low cost.
High-density Polyethylene (HDPE): Among the types of polyethylene, HDPE is the more dominant raw material in terms of market share. Its molecular structure is linear with little branching resulting in higher intermolecular forces. This gives HDPE its high specific strength.
Low-density Polyethylene (LDPE): LDPE has a branched polymer chain that has weak intermolecular forces. This results in lower tensile strength and barrier properties. Nevertheless, it has better impact strength and resilience than HDPE.
Polyethylene Terephthalate (PET): PET, specifically biaxially oriented PET, is known for its low permeability to carbon dioxide. This makes the material desirable for producing bottles for carbonated beverages. The downside of using PET, however, is its affinity with water. It tends to absorb water which makes processing difficult as the resin needs to be dried before extrusion.
Polypropylene (PP): Polypropylene is a polymer that can have a wide range of properties that depends on its molecular weight, morphology, crystalline structure, additives, and copolymerization. It can be made into polymers with a high degree of crystallinity; thus, higher tensile strength and hardness which is comparable to HDPE. Moreover, they can withstand higher temperatures without loss of strength or degradation.
Polyvinyl Chloride (PVC): Polyvinyl Chloride is another versatile material that can be formulated with different stabilizers, plasticizers, impact modifiers, processing aids, and other additives. It can be made into rigid or flexible plastics by modifying the amount of plasticizers. Moreover, they offer better clarity than other versatile plastics such as PP. PVCs can release harmful pollutants, acids, and toxins during processing or degradation. Its compounding ingredients are now being regulated by FDA, EPA, and other organizations.
Nylon or Polyamide (PA): Polyamide is considered as an engineering plastic characterized by its high toughness, high impact strength, resistance to solvents, good abrasion resistance, and can be modified to have high heat resistance. PA production mostly goes into the manufacture of fibers. Only about 10% of PA production volume is used in plastic forming processes. The common applications of blow-molded PA are automotive parts and fuel tanks.
Polycarbonate (PC): Polycarbonate is easily processed by different molding methods, with injection molding and sheet extrusion being the most common. In blow molding, its usual application is bottle production. Polycarbonates are known for their high impact strength, heat resistance, good electrical insulation, transparency, good water barrier properties, and inherent flame retarding properties.
Copolyester: Copolyesters are described as having very high thermal oxidation stability, inherent flame resistance, chemical inertness, excellent clarity, and good mechanical properties. It can be molded into thin-walled containers at high speeds. Moreover, it has intrinsic lubricity and non-stick properties making it viable for molding.
Cyclic Olefin Copolymer (COC): COC is a family of fully amorphous polymer resins that are desired because of its comparable properties with PVC without the negative effects. It is best suited for food packaging, medicine bottles, and vials production because of its low water vapor permeability. The properties of COC can be altered by developing specific blends of polyolefins. Some of the properties that can be modified are its elasticity, transparency, vapor transmission rate, and coefficient of friction.
In plastic manufacturing industries, machines are vital and expensive assets, especially in the blow molding industry, machines often need to be maintained to keep the machine in high productivity.
Many manufacturers are choosing all-electric models of blow molding machines. Here's why with continuous improvement and development, more and more manufacturers are turning their attention to all-automatic blowing machines. The advantages of an all-automatic blowing machine are more obvious.
Energy Saving And Environmentally Friendly
Compared with the traditional one, an all-automatic blowing machine is more energy saving and environmentally friendly. The consumption of electricity is less than 60% of the traditional one's consumption. Because it does not need any lubrication oil in the whole process, such as filling material, cooling and blowing process etc., it has little pollution to our environment.
Lower Maintenance Cost
All-automatic blowing machine has lower maintenance cost than traditional ones because there is no need for lubrication oil change and other parts replacement every year or so which costs much money for maintenance company to do that job in traditional technology but with less operation cost in each time use it can be seen as an advantage comparing other kinds of blow machines.
High Durability
All-electirc blow molding machine has a longer life span than traditional ones which may give customers stable performance during its service life period.
BaiXing Company offers Semi blowing machine,Automatic blowing machine and Servo automatic blowing machine , our company is a successful manufacturer and supplier, we have devoted ourselves to machinery industry many years, we will provide excellent service and competitive price for you, we are expecting to become your long-term partner in China.Taizhou Huangyan Baixing Machinery Co.,Ltd. is a company specializing in manufacturing and developing PET blow molding machine and blow moldings. The Company has been engaged in blow molding industry for more than 20 years.Currently, Baxing Machinery manufactures the following main products: BX series automatic, manual and semi-automatic two-step blow molding machine and blow moldings with various shapes and specifications.
