Bottle blowing moulds are a vital part of the plastic bottle manufacturing process, and they come in various types to accommodate different production needs. These moulds are designed to create bottles of various shapes, sizes, and materials. In this article, we will discuss the different types of bottle blowing moulds and their specific applications in different industries.

One of the most common types of bottle blowing moulds is the single-cavity mould, which is typically used for small-scale production runs. This mould creates one bottle at a time, making it suitable for manufacturers who produce limited quantities of bottles or need to produce different types of bottles with a wide range of sizes. Single-cavity moulds are often used for specialty products such as custom-designed bottles or bottles with unique shapes that require more detailed work.

In contrast, the multi-cavity mould is designed to produce several bottles at once, making it ideal for high-volume production. This type of mould has multiple cavities, allowing manufacturers to produce a large number of bottles in a shorter amount of time. Multi-cavity moulds are used by manufacturers who need to produce large quantities of bottles efficiently, such as in the beverage or bottled water industries. The use of multi-cavity moulds can significantly increase production speed and reduce labor costs, contributing to overall cost-effectiveness.

Another important variation is the injection stretch blow mould, which is used to create bottles with higher strength and durability. This mould is particularly useful for products that require bottles with a high level of impact resistance, such as carbonated beverages. The process involves both injection molding and blow molding to create bottles with enhanced mechanical properties. The injection stretch blow mould allows for precise control over the thickness and shape of the bottle, ensuring that it can withstand the pressure of carbonated liquids without compromising safety.

Two-stage blow moulding is another method that involves the creation of preforms that are first injection molded before being blown into their final shape in the second stage. This technique is commonly used in the production of PET (polyethylene terephthalate) bottles, which are widely used in the beverage industry. The preform produced in the injection molding phase is then reheated and placed in the blowing mould to create the final bottle. This two-step process provides greater flexibility in the design of the bottle and ensures that the final product meets the desired specifications.

Lastly, custom bottle moulds are designed for specific needs or unique bottle designs. These moulds are tailored to produce bottles that are not part of standard designs, allowing companies to create distinctive packaging that stands out in the market. Custom moulds can be used to produce bottles with unique shapes, embossed logos, or intricate designs, catering to the needs of niche markets.

In conclusion, there are various types of bottle blowing moulds, each serving specific needs in bottle production. From single-cavity moulds for small runs to multi-cavity moulds for high-volume production, the right type of mould can help manufacturers optimize their production processes and meet the demands of different industries.