Summary:Blow Moulding is the process of creating hollow containers. These products can range from commodity items such as water ...
Blow Moulding is the process of creating hollow containers. These products can range from commodity items such as water and soda bottles, to highly engineered items such as electrical enclosures and gas tanks. Listed below are some of the most common types of blow moulds.
BOTTLE BLOW MOULD
The CBM process is a versatile way to produce plastic bottles. It produces bottles with medium to large-blow-up ratios, which refers to the proportion of neck to body diameter. In other words, these bottles are large in body, but have small necks. This process is especially useful for manufacturing bottles with HDPE and LDPE, and can also produce bottles with very-tight critical neck dimensions. Here are some key points to keep in mind when using the CBM process to manufacture your bottles.
Before using this method, a heated resin is extruded into a parison (vertical tube-like structure) that allows compressed air to flow through it. The parison is then inserted into a two-part bottle blow mould cavity and closed on both sides. Afterward, a blow pin is inserted into the neck section of the parison and inflates it inside the mold cavity. The process is complete after the parison has completely cooled.
A 1.5-liter water bottle weighs only 20.5 grams, whereas a traditional blow mould requires a pressure of 218 psi (15 bar) to complete its expansion. Nonetheless, the process speed is the same, and the shape of the bottle is kept unchanged.
Injection blow molding is a more sophisticated method for producing plastic bottles. This technique uses a heated material to make the preform and then blows it into the bottle. Afterwards, the plastic bottle is cooled and indexed to the next station. Injection blow molding is a highly efficient way to produce high-quality plastic bottles, especially those with small necks. The 3-station method eliminates the reheat stage, reducing tooling costs by about 25%.
OIL BOTTLE BLOW MOULD
The process of producing hollow plastic parts, like oil bottles, is known as blow moulding. This process uses the same concept as glass blowing. In fact, the process is even used for manufacturing amorphous metals, or bulk metallic glasses. It involves low pressure blow air that is forced into a mould cavity. Today, the global production of plastic containers exceeds 10 billion units. This is a testament to the growing importance of the blow moulding process in the manufacturing industry.
To handle different types of containers, from small 18mm necks to 120mm wide mouths. Hengxin bottle blow mould can also produce various shapes, including 2,5 litre and oval bottles. Hengxin mould comes with a heating system.
Another common process is the injection blow molding method. This method involves the use of hot material, which is indexed to a blow molding station and blown into a bottle. Once the bottle has cooled, it is ejected from the mould. This method allows for more precise details such as the neck and the finish area. It also reduces the cost of tooling by about 25%. The biaxial stretching method of blow moulding is also an option to consider.
Another method for plastic part manufacturing is injection stretch blow molding. This technique is characterized by one or two stages, depending on the application and type of part. It is most effective for producing plastic bottles. The process is used to create preforms, which can be sold to bottling companies or used directly to produce bottles. It is a cost-effective option for manufacturing bottles. It follows the same basic principles as glass blowing, which makes it a popular choice for the manufacturing industry.
The HDPE EXTRUSION MOULD is a highly versatile plastic molding process that produces various shapes and sizes. The plastic is first melted and then transferred into the mold cavity that has "A" and "B" parts. The HDPE hardens almost immediately and takes on the shape of the mold cavity. The part is then ejected out of the mold once it has set. This process can be repeated many times. Each HDPE mould is custom-made to meet your project specifications.
An extrusion mould is generally a pocket-friendly option, but the quality of the materials used can vary from excellent to very poor. HDPE, PP, and PC are generally considered to be good materials, but injection moulding is much more expensive. HDPE EXTRUSION MOULD: The benefits of HDPE EXTRUSION MOULD include its environmental benefits. When heated to its melting point, HDPE is recyclable. This material is also acid and alkali resistant, has excellent electrical insulation properties, and has low temperature toughness. HDPE EXTRUSION MOULD: The advantages of this process include the simplicity of setup, high stability, and high speed. Hubei tianrui plastic mould co., LTD has 3000 square meters of workshop space and 60 highly skilled workers with 21 years experience in the extrusion mould industry.
Commercial HDPE EXTRUSION MOULD: The process uses a softened thermoplastic sheet that is vertically extruded from a die head and inflated against a closed HDPE mold's surface. This expanded plastic solidifies to form a hollow HDPE product. HDPE EXTRUSION MOULD manufacturers have many different products in the market today. For instance, cleaning agents are commonly contained in plastic bottles. Some products contain water or chemical liquids in plastic drums.
