A. Integrated design reduces material conveying loss
The injection and blow molding units of the injection blow machine are closely connected, and the preform does not need to be transferred through external equipment such as conveyor belts and manipulators, which avoids temperature loss, surface scratches or contamination of the material during transportation. Especially for high-temperature sensitive materials (such as certain thermoplastic elastomers), this "zero transfer" design can maintain the best molding state of the material and reduce the problem of inconsistent shrinkage caused by temperature fluctuations.
For example, when producing medical infusion bottles, the cleanliness and stability of the material directly affect the safety of the drug. The closed production process of the injection blow machine can minimize the risk of contamination.

B. Strong dependence on molds, but higher molding accuracy
The mold of the injection blow machine needs to meet the dual needs of injection molding (preform molding) and blow molding (final shape finalization). The mold structure is relatively complex (such as injection molding cavity, blow molding cavity, blowing channel, etc.), but because of this, the mold and equipment are more matched, and the positioning error during molding can be controlled within 0.01mm.
This high precision is crucial for products that need to be tightly sealed (such as aerosol cans and pressure packaging bottles), and can ensure that the assembly gap between the valve and the bottle mouth is uniform to avoid leakage.

C. Suitable for small-capacity products, with significant advantages in batch production
The efficiency and cost advantages of injection blow molding machines are particularly prominent when producing small-capacity hollow products below 500ml (such as oral liquid bottles, essence bottles, and sample packaging). Compared with large-scale blow molding equipment, its single injection volume is small, the cycle is short (usually 8-15 seconds/piece), and the multi-cavity design (such as 32 cavities, 64 cavities) can achieve "small volume, high batch" production, and the output per hour can reach tens of thousands of pieces.
However, large-capacity products (such as buckets above 1L) require larger blow molding space and injection volume, so the applicability of injection blow molding machines is weaker, and they are more suitable for step-by-step processes or large-scale hollow blow molding machines.

D. Strong linkage of process parameters, easy to realize intelligent control
The injection pressure, blow molding air pressure, temperature, clamping force and other parameters of modern injection blow molding machines are linked and adjusted through the central control system. For example, the holding time in the injection stage can automatically match the expansion rate in the blow molding stage to avoid internal stress or deformation of the product.
Some high-end equipment is also equipped with sensors and Internet of Things technology, which can collect production data (such as cavity pressure and product weight) in real time, and automatically correct parameters through algorithms to achieve "adaptive production", further reduce manual intervention, and improve long-term production stability.

E. Small equipment footprint and high space utilization
The injection blow molding machine integrates injection molding and blow molding functions on one device, which can reduce the floor space by 30%-50% compared with the step-by-step combination of "injection molding machine + blow molding machine". For enterprises with limited plant space (such as pharmaceutical clean workshops and cosmetics production lines), this can save valuable site resources and reduce the interference of logistics routes caused by equipment layout.