Blow Molding
Your Professional Blow Molding Supplier
Our goal is to be your reliable partner for blow molding in China. Hengji Mould & Plastic Co.,ltd is specialized in designing and manufacturing of plastic injection molds for automobile interiors&exteriors and lights, as well as injection molding service. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
Why choose us
Production equipment
We have CNC machining centers, five-axis high-speed milling machines, deep-hole drills, EDMs, mold clamping machines, injection molding machines, coordinate measuring machines, and other processing and testing equipment.
Quality control
We strictly adhere to the ISO9001 quality management system and continuously strive for excellent product quality.
Our team
We have a design team staffed with experts in CAE/mold flow analysis, automotive interior and exterior design, and mid- to senior-level technicians. We are a strong and capable team.
Our services
Our team of experts will recommend the most suitable products according to customer needs and provide detailed consultation, we ensure timely delivery, and we provide long-term service support.
Advantages of Blow Molding
Cost-effectiveness
Blow molding is a highly efficient and cost-effective production method, particularly for large-scale manufacturing. The process allows for the production of hollow parts, reducing material usage and overall costs.
Design flexibility
Blow molding enables the production of complex shapes and designs, including intricate contours, handles, and indentations. It offers excellent design flexibility, making it suitable for a wide range of products.
Seamless construction
Blow molding creates seamless parts, eliminating the need for additional assembly or joining processes. This seamless construction enhances the structural integrity and durability of the finished products.
Wide range of materials
Blow molding supports various materials, including high-density polyethylene (hdpe), polypropylene (pp), and polyethylene terephthalate (pet). This versatility allows manufacturers to select the most suitable material for their specific application requirements.
Specification of Blow Molding
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Product name |
Blow molding |
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Color |
Customizable |
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Product Dimensions |
Customizable |
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Fit Type |
Universal Fit |
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Automotive Fit Type |
Universal Fit |
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Special Features |
Decorate, Scratch proof |
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Origin |
China |
Types of Blow Molding
Extrusion blow molding
An extruder forces molten plastic through a die head, which forms the parison around a blow pin, with the help of a rotating screw.
Injection blow molding
To make a hollow parison, molten plastic is injection molded around a core inside a parison mold. Both the parison and the core are transferred to the blow mold and securely fastened when the parison mold opens.
Stretch blow molding
It’s similar to injection blow molding in that the parison is formed in the same way. However, it is heated and stretched downward by the core before being inflated after it is transported to the blow mold.
Blow moulding is used to manufacture a wide range of products, from everyday items to industrial components. Common applications include: Bottles for soft drinks, milk, and juices. Containers for shampoo, cleaning products, and cosmetics. Toys like plastic balls and watering cans.
Industrial parts such as drums, ducts, and packaging solutions. The process is highly versatile, allowing for the creation of both simple and complex shapes, depending on the needs of the product.
Production Process of Blow Molding
Regardless of material type, blow molding has three key steps. First a controlled quantity of melt is made into parison or preform. Next, the parison is forced against a mold to increase the container volume and define the shape. Last, the molded object is cooled to retain the shape. Blow molding makes use of the steadily increasing viscosity of the glass or thermoplastic polymer melt as it cools.
The viscosity of the material at the point of “blowing” must be in the appropriate range for easy deformation against the mold without gross flow under gravity, and the rate of cooling after this point must be fast enough to raise the viscosity to levels that are necessary to retain the shape. The processes themselves are highly nonisothermal with a hot melt cooling continuously throughout, but they are also automated and reproducible.
Packing and Shipping of Blow Molding
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Packing |
Box |
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Shipping |
Shipped by road, sea, rail |
FAQ