Unclear application scenarios for injection molding vs. injection blow molding; challenging decision-making regarding equipment selection.
Difficulties in calculating parameters such as clamping force, shot weight, and number of cavities.
Challenges in meeting standards for neck finish precision, wall thickness uniformity, and surface quality.
Excessive waste from runners and gates; low material utilization rates.
Time-consuming mold changes impacting production efficiency for diverse product lines.
Separate purchasing of machines and molds leads to high coordination costs and long lead times.

Suitable for PET preforms, caps, pipe fittings, household plastic products, packaging components, and other solid or structural plastic parts.
Key considerations: Product weight, plastic raw material, clamping force, shot weight, mold dimensions, number of cavities, and cycle time.
Suitable for small hollow containers requiring high precision in neck finish, superior surface quality, and consistent wall thickness.
Ideal applications: Pharmaceutical bottles, health supplement bottles, cosmetic containers, food containers, and other small, precision plastic bottles.

Comparison Criteria
Injection Molding
Injection Blow Molding
Applicable Products
Preforms, caps, pipe fittings, household goods
Pharmaceutical bottles, cosmetic bottles, precision containers
Product Structure
Solid or thick-walled structures
Hollow, thin-walled structures
Neck Precision
General-purpose
High (no secondary trimming required)
Scrap Generation
Runner scrap is recyclable
No runner waste; high material utilization rate
Key Equipment
Injection molding machine
Injection blow molding machine
Evaluate product wall thickness, geometric complexity, and functional requirements
Select plastic raw materials and determine the injection molding or injection blow molding process route
Match appropriate equipment models and specifications
Precisely calculate key parameters such as clamping force and shot weight
Execute mold fabrication using in-house CNC equipment
Conduct joint testing and commissioning of the machine and mold
Submit trial-produced samples to the customer for approval
Ship equipment and perform on-site installation
Provide systematic training and long-term technical support
Suitable for producing PET preforms, plastic bottle caps, and packaging accessories; injection molding machines and molds are configured based on product weight and cavity count.
Suitable for tablet bottles, health supplement bottles, oral liquid packaging, and other containers requiring high precision in neck dimensions and wall thickness.
Suitable for lotion bottles, cosmetic containers, roll-on bottles, and other packaging requiring superior aesthetic and surface quality.
Suitable for household goods, pipe fittings, packaging accessories, and various other injection-molded products.
