Plastic injection blow molding machine is a device that integrates injection molding and blow molding. It is mainly used to produce hollow plastic products (such as bottles, cans, barrels, etc.). Its characteristics cover multiple dimensions such as process, efficiency, and product quality. The following is a detailed description: 
 Process integration and efficient production
One-step molding advantage. The injection blow molding machine completes the two processes of "injection blank" and "blow molding" on the same equipment. There is no need to manually transfer the blank, and the production cycle is shortened by 40%-60% (the traditional two-step method requires the blank to be injected first and then transferred to the blow molding machine). Case: To produce 500ml mineral water bottles, the injection blow molding machine has a single cycle time of about 8-12 seconds, and the production capacity can reach 3000-4500 bottles/hour, which is 1.5-2 times the efficiency of the two-step equipment. High-precision blank control ◦ The injection system adopts a screw/plunger structure, which can accurately control the blank weight (error ≤±0.5g) and wall thickness distribution (such as the uniformity of the wall thickness of the bottle mouth thread area ≤±5%), reducing the defects of the product after blow molding (such as bottle mouth deformation, uneven bottle body thickness) 
 Product quality and performance optimization
Uniform physical properties, the blank is heated evenly during the injection process, the molecular orientation of the product after blow molding is consistent, and the impact strength is 10%-20% higher than that of extrusion blow molded products (such as injection blow molded cosmetic bottles can withstand a 1.5-meter drop without breaking). The bottle mouth thread has high precision (matching tolerance ≤0.1mm), good sealing with the bottle cap, and is suitable for scenes requiring high-pressure sealing (such as carbonated beverage bottles and medicine bottles).  Surface smoothness and detail restoration ◦ The mold surface is mirror polished (roughness Ra≤0.2μm), the surface gloss of the product can reach more than 90%, and the text and patterns on the mold can be clearly presented (such as the line accuracy of the bottle body LOGO ≤0.3mm). 
 Material adaptability and energy saving
Compatible with a variety of plastics. Applicable materials include thermoplastics such as PET, PP, PE, PVC, PS, etc. Some models can process engineering plastics (such as PC, PA) to meet the needs of different fields such as food packaging, medical equipment, and chemical containers. For high-viscosity materials (such as PC), it is equipped with a high aspect ratio screw (L/D=25-30) and a strong plasticizing device to avoid material degradation. Energy-saving design ,The servo motor drive saves 30%-50% energy compared to the traditional hydraulic system (such as a 100-ton injection blow molding machine with a power of about 15kW and a hydraulic machine with a power of about 25kW), and the operating noise is reduced by 10-15dB. The heating system uses electromagnetic induction or ceramic heating, and the thermal efficiency is increased to more than 90%, reducing energy loss. 
Automation and intelligence
Full process automation , Equipped with automatic feeding, blank conveying, and product sorting systems, unmanned production can be realized (such as connecting a robot to automatically take bottles, and connecting to subsequent printing and labeling equipment). Some high-end models support multi-cavity molding (such as 8 cavities in one output and 16 cavities in one output), further improving production capacity and suitable for large-scale production. Intelligent control system Using PLC or PC-Based control system, supporting parameter storage (can save more than 100 sets of process recipes), one-click call when changing products, and shortening the machine adjustment time to less than 30 minutes.  Real-time monitoring of temperature, pressure, position and other data, and generating production reports (such as production capacity, defective rate, energy consumption statistics) to facilitate quality traceability and cost control. 
  Mold and maintenance convenience
Quick mold change design, the mold adopts hydraulic or electric quick locking device, the mold change time is ≤1 hour (traditional models require 2-3 hours), suitable for multi-variety small batch production switching. The mold has a long life and can reach more than 1 million times under normal use (injection mold cavity wear ≤0.05mm). Easy-to-maintain structure ◦ Key components (such as screws and barrels) adopt modular design, which is easy to disassemble and has low maintenance costs; the lubrication system automatically supplies oil at a fixed time to reduce manual maintenance workload. 
Application scenarios and limitations
Applicable scenarios: High precision requirements: medical bottles (need sterile sealing), cosmetic bottles (high appearance requirements), food packaging bottles (such as sauce bottles, oil bottles). Small hollow products: The capacity is usually 1ml-2000ml, and some large equipment can produce barrel products above 5L. Limitations: The equipment cost is relatively high (30%-50% more expensive than extrusion blow molding machines), and is suitable for scenarios with high requirements for product precision and production capacity; It is not suitable for the production of extra-large or extremely complex-shaped products (such as trash cans, car fuel tanks, etc., which are more suitable for extrusion blow molding or injection molding).