The clamping force of an injection moulding machine is a key factor in ensuring that the mould remains firmly closed during the injection process, allowing the plastic to be injected into the mould cavity at the correct pressure. If the clamping force is insufficient, the mould may open slightly, resulting in defects such as flash, excess plastic around the part, or incomplete moulding. If the clamping force is too high, it will increase the machine's cycle time, energy consumption, and wear.
Topstar injection moulding machines have clamping forces between 90 tons and 470 tons for products that require less clamping force, and large injection moulding machines have clamping forces between 550 tons and 2800 tons for heavier and more complex moulds. When you purchase an injection moulding machine, you will base the clamping force on the size and complexity of the mould, the injection moulding material, and the product you produce.
Injectionmouldingg machines with clamping forces between 90t and 470t: suitable products and applications
Manufacturers use injection moulding machines with clamping forces ranging from 90 to 470 tons to produce small and medium-sized products. These machines are versatile and can process a variety of plastics, including thermoplastics, elastomers and engineering plastics. Clamping forces in this range are ideal for manufacturers producing the following products:
Consumer electronics: Components such as smartphone housings, tablet housings and remote control parts require medium precision and efficient production cycles.
Small household appliances: Plastic parts for coffee machines, blenders, or vacuum cleaners require good surface quality and dimensional accuracy.
Packaging materials, such as lids, closures, and caps for containers of daily necessities, usually require a low to medium clamping force to ensure a seal without deformation.
Automotive parts: Small parts such as knobs, buttons or decorative parts do not require heavy clamping force but still require accuracy and consistency.
These injection moulding machines can produce parts of medium complexity, and their size and efficiency make them ideal for high-volume production. Choose an injection moulding machine with a clamping force of 90 tons to 470 tons to meet the injection moulding needs of industries such as electronics, household goods and packaging.
TM470II-Injection-Molding-Machine
Injectionmouldingg machines with a clamping force o550t-2800t0t: heavy-duty applications
For larger and more complex moulds, injection moulding machines with a clamping force between 55 and 2800 tons are required to ensure the mould is closed correctly and the part is formed. These iinjection mouldingmachines are designed to handle the higher pressures and larger volumes of material required to produce heavy, high-performance parts. Products that typically require this clamping force include:
Automotive parts: Larger bumpers, dashboards, and interior trims require higher clamping forces to ensure accurate moulding and durability.
Industrial equipment parts, such as housings, brackets, or gears used in heavy machinery and industrial applications, must be produced with high precision and strength.
Medical devices: Larger medical parts, such as injection sites, diagnostic equipment parts, and even medical device housings, require strict precision and material requirements.
Packaging housing solutions: Larger packaging products, such as industrial containers or housings for large household appliances, require heavy moulds to achieve the correct strength and function.
These high-tonnage injection moulding machines are particularly suitable for industries that require complex and large products, which demand high injection forces and advanced features such as multi-cavity moulds, automation, and precise material handling. Their higher clamping forces can ensure consistent product quality and efficiency in large-scale production.
TH-2200-Straight-Pressure-Injection-Molding-Machine
Relationship between material type and clamping force
The type of material used in the injection moulding process plays a vital role in determining the required clamping force. Due to viscosity differences during thinjection mouldingng, thermoplastics require less clamping force than engineering plastics. Materials with higher viscosities generally require more clamping force to prevent the mould from separating under pressure.
Generally, a machine with a clamping force in the 90-ton to 470-ton range is sufficient for lighter materials or smaller products. However, for materials that require higher injection pressures, such as high-performance plastics used in the automotive or medical industries, you need a machine with a clamping force in t550-tonton2,800-ton0ton range to ensure controllable and moulding processes. The balance between material selection and clamping force can achieve the desired product quality, minimising defects during production.