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Injection Molding Machines for Industrial Plastic Production

Lisong supplies injection molding machines for plastic packaging, PET preforms, household products and industrial components. Available configurations include high-speed, precision, hydraulic and application-specific machines.

Machine selection depends on clamping force, shot capacity, mold dimensions, material, cycle time and required output. Compare the representative specifications and machine categories below, then review individual machine details or contact Lisong for an initial application assessment.

Thin Wall Injection Molding Machine
The Lisong Thin Wall Injection Molding Machine is designed for high-volume production of thin-wall plastic products. Its main applications include disposable beverage cups, lunch boxes, food...
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Plastic Cable Tie Injection Molding Machine
The Plastic Cable Tie Injection Molding Machine is a specialized injection molding machine for producing plastic cable ties, including nylon cable ties made from PA6, PA66 and related materials.
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Plastic Bottle Injection Molding Machine
The Plastic Bottle Injection Molding Machine is a specialized injection molding machine for producing PET bottles and rigid plastic packaging containers. It is developed for manufacturers...
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Plastic Food Container Machine
LISONG Plastic Food Container Machine is a specialized injection molding machine for producing thin-wall plastic food containers. It is mainly used for takeaway containers, lunch boxes, trays,...
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Plastic Cutlery Packaging Machine
LISONG Plastic Cutlery Packaging Machine is an automated packaging machine for disposable plastic spoons, forks, knives, and cutlery sets, mainly used by tableware manufacturers for...
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Plastic Lunch Box Injection Molding Machine
LISONG Plastic Lunch Box Injection Molding Machine is designed for manufacturing disposable plastic lunch boxes, takeaway containers, meal trays, and other PP food packaging products used in food...
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Plastic Spoon Injection Molding Machine
LISONG Plastic Spoon Injection Molding Machine is a specialized injection molding machine for manufacturing disposable PP plastic spoons and other plastic cutlery products used in food service,...
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Plastic Basket Injection Molding Machine
The Plastic Basket Injection Molding Machine is a specialized injection molding machine for manufacturing plastic baskets, fruit baskets, vegetable baskets, storage baskets and other rigid plastic...
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Plastic Pen Injection Molding Machine
The Plastic Pen Injection Molding Machine is a specialized injection molding machine for manufacturing plastic pen parts. It is mainly used for producing plastic components for ballpoint pens, gel...
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Representative Injection Molding Machine Specifications

Specification	LS290G	LS310G
International Size Description	2900-770	3100-770
Clamping Force	3,190 kN	3,410 kN
Maximum Mold Opening Stroke	550 mm	550 mm
Tie-Bar Spacing (H × V)	580 × 515 mm	620 × 510 mm
Screw Diameter	50 mm	50 mm
Specific Injection Pressure (up to 400°C)	1,710 bar	1,710 bar
Maximum Shot Weight (PS)	411 g	411 g
Injection Speed (at injection pressures below 1,000 bar)	434 mm/s	434 mm/s
Electric Drive Capacity (approx.)	99.9 kW	99.9 kW
Net Weight (without oil, approx.)	11,000 kg	11,500 kg
Machine Dimensions (L × W × H, approx.)	6.65 × 1.62 × 2.1 m	6.7 × 1.65 × 2.1 m

Comparing the LS290G and LS310G
The LS310G offers higher clamping force (3,410 kN vs. 3,190 kN) and wider horizontal tie-bar spacing, while both models share the same listed screw diameter, shot weight, and mold opening stroke.
Choose between the two based on projected part area, mold dimensions, injection requirements, and available factory space. Verify mold compatibility against the complete machine specifications before ordering.

How to Select an Injection Molding Machine

Clamping Force

Estimate the required clamping force based on the projected area of all cavities and runners, material characteristics and expected molding conditions. Verify the selection against the mold design and applicable machine specifications.

Shot Capacity

Calculate the combined shot requirements for the parts and runners. Check the required shot weight against the machine's available injection capacity and the processing requirements of the selected material.

Mold Compatibility

Check mold length, width, thickness, tie-bar spacing, opening stroke, mounting requirements and ejection arrangements. Confirm that the mold can be installed and operated within the machine's specified limits.

Cycle Time and Production Output

Define the target cycle time, cavity count and required output per hour or shift. Evaluate the complete molding cycle, including filling, cooling, mold opening, part removal and any automation requirements.

Automation and Auxiliary Equipment

Identify requirements for part removal, stacking, conveyors, temperature control and other auxiliary equipment. Confirm the necessary interfaces and available installation space.

Information Needed for Machine Selection

To support an initial assessment, prepare the product drawing or photo, material, part weight, mold dimensions, cavity count, target output and automation requirements. Verify the final machine selection against the machine specifications and application requirements.

Injection Molding Machine Applications

Thin-Wall Packaging
For disposable cups, food containers and lightweight packaging. Key considerations include part geometry, cavity layout and target cycle time.

Plastic Cable Ties
For high-volume cable tie production, where cavity count, shot requirements and automated part handling affect output.

PET Preforms and Bottles
For PET preform production. Selection depends on preform weight, resin requirements, mold configuration and downstream production requirements.

Buckets and Containers
For buckets, chemical containers and other molded products. Evaluate projected area, part weight and mold dimensions.

Cutlery and Consumer Products
For cutlery, baskets, pens and similar products. Consider cavity count, part geometry and required production output.

Compare Injection Molding Machine Categories

The categories below describe common production requirements. They may overlap depending on the machine configuration and application.

Machine Category	Typical Applications	Key Selection Considerations
High-Speed Injection Molding	Thin-wall packaging and high-volume molded products	Cycle time, injection performance, mold configuration and automation
Hydraulic Injection Molding	General-purpose plastic molding	Clamping force, injection capacity, operating requirements and installation space
Precision Injection Molding	Components with tight dimensional tolerances	Process repeatability, control requirements, mold precision and material characteristics
PET Preform Injection Molding	PET preforms for bottle production	Preform weight, resin specifications, mold configuration and downstream production requirements
Application-Specific Configurations	Cable ties, cutlery, buckets and other dedicated applications	Product geometry, cavity count, mold design and target output

Injection Molding Machine Manufacturing Capabilities

Manufacturing Facilities

Lisong's manufacturing facilities cover approximately 40,000 m² and include CNC equipment for machine component production. Manufacturing and assembly requirements depend on the machine design and configuration.

Component Manufacturing and Machine Assembly

Manufacturing and assembly requirements depend on the machine design and configuration. Mechanical components, electrical systems and control systems should be verified against the applicable technical specifications.

Technical Team

More than 80 professional and technical personnel support manufacturing and technical operations. Evaluate engineering requirements for the selected machine and application.

Injection Molding Machine Quality Control and Testing

Component and Assembly Inspection
Component inspection and assembly checks should be conducted according to the applicable technical specifications and inspection procedures.

Electrical and Control System Verification
Check electrical connections, control systems and machine functions against the applicable inspection requirements.

Pre-Shipment Testing and Documentation
Before ordering, confirm the pre-shipment testing scope, acceptance criteria and available inspection records. If mold trials or customer witness inspections are required, establish the arrangements and responsibilities before order finalization.
Confirm the inspection procedures, test records and acceptance criteria with Lisong before ordering.

Technical Support and Global Services

Lisong coordinates project support according to the machine configuration, destination and agreed service terms.

Packing and International Shipping

Packing, shipping arrangements and export documentation are coordinated according to the order and destination. Confirm shipping methods, delivery schedules and cost allocation in the quotation or sales contract.

Installation and Operator Training

Installation, commissioning and operator training are available subject to project requirements. Confirm the service scope, schedule and charges before ordering

After-Sales Technical Support

After-sales support may include maintenance guidance and troubleshooting, as specified in the service agreement.

Frequently Asked Questions

Q: What warranty does Lisong provide for its injection molding machines?

A: Lisong provides a 3-year warranty. Please refer to the quotation or warranty documentation for coverage details, exclusions and claim procedures.

Q: What is the production lead time?

A: The typical production lead time is 45–60 days, depending on the machine model, configuration and order requirements. The confirmed schedule will be specified during order confirmation.

Q: How large is an injection molding machine?

A: Dimensions vary by model. The LS290G is approximately 6.65 × 1.62 × 2.1 m, while the LS310G is approximately 6.7 × 1.65 × 2.1 m. Confirm the complete installation requirements before ordering.

Q: What information is needed to select a machine?

A: Provide your product details, material, part weight, mold dimensions, cavity count, target cycle time and output. Product drawings or photos will help Lisong assess your requirements.

Q: Can the machine be tested with our mold before shipment?

A: Mold-matching and pre-shipment testing can be arranged subject to the machine configuration, agreed testing scope and project requirements. Confirm the arrangements before order finalization.

Q: Can machines be configured for different countries?

A: Electrical specifications, including voltage and frequency, should be confirmed according to the destination market and the agreed machine configuration.

Q: How are injection molding machines shipped internationally?

A: Shipping arrangements depend on the destination, delivery schedule and agreed terms. Available transport methods, shipment tracking and export documentation should be confirmed for each order.

Q: Can Lisong supply automation equipment?

A: Part picking, stacking and production-line integration can be evaluated according to the machine configuration, application and production requirements.

Q: What documents are provided before shipment?

A: Confirm the available shipping documents, inspection records, machine manuals, electrical specifications and compliance documents in the quotation or sales contract.

Q: How do I estimate the required clamping force?

A: Multiply the total projected area of all cavities and runners by the estimated cavity pressure and an appropriate safety factor. The required force depends on the part design, material and molding conditions. Verify the result against the mold and machine specifications.

Q: How do I determine the required shot capacity?

A: Add the weight of all parts and runners per cycle, then compare the total with the machine's rated shot weight.
Shot utilization (%) = Required shot weight ÷ Rated shot weight × 100%.
The rated shot weight may vary with the reference material. Consider the material, screw design and processing conditions, and confirm the usable capacity with the machine supplier.

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Plastic Bottle Injection Molding Machine, Plastic Cutlery Packaging Machine, Thin Wall Injection Molding Machine