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In the field of injection molding, what we commonly refer to as "tonnage" actually refers to the clamping force of the injection molding machine, measured in 

"tons" (t). In simple terms, it represents the maximum clamping force that the mold-clamping mechanism of the injection molding machine can apply to the 

mold, with the aim of ensuring that the mold does not "expand" under the huge injection pressure when injecting plastic under high pressure.

The main difference between different tonnage injection molding machines lies in the product sizes and application fields they can produce. The larger the 

tonnage, the larger the plastic products that can be produced, and the requirements for equipment precision and stability also increase exponentially.

Small tonnage (50-200 tons): The symbol of precision and speed

Small-tonnage injection molding machines are mainly used for producing plastic parts with small sizes and high precision requirements. These machines pursue 

high speed, high response, and high stability.

Common products include:

•Electronic and electrical: Mobile phone chargers, connectors, internal precision parts of switches

•Daily life: Plastic gears, bottle caps, pen holders, small toys

•Medical devices: Syringes, infusion sets, etc., small consumables

Medium tonnage (200-600 tons): The backbone of manufacturing

This is the most widely used range of injection molding machines, capable of meeting the production needs of most industrial products. Medium-tonnage equipment 

needs to find the best balance between "sufficient clamping force" and "controllable energy consumption".

Common products include:

•Automotive industry: Interior parts, lamp housings, bumper clips

•Household appliances: Television casings, air conditioner panels, washing machine inner buckets

•Daily items: Plastic chairs, storage boxes, trash cans

Large tonnage (600-1000 tons and above): The cradle of large products

When the projected area of the product is large, the wall thickness is thick, or there is an extremely high requirement for dimensional stability, large-tonnage injection 

molding machines must be used. These machines are expensive and have high energy consumption, and are an important indicator for evaluating a molding enterprise's ability to undertake large-scale projects.

Common products include:

•Automobile manufacturing: Large bumpers, instrument panel frameworks

•Logistics and storage: Large pallets, sanitation trash cans

•Home appliances: Air conditioning outdoor units, washing machine bases

Why is the selection of tonnage so important?

If the clamping force is insufficient, the mold will be pushed open, resulting in flash (spurs) on the product, which affects the appearance and dimensional accuracy; if the clamping force is too high, not only will the equipment procurement cost and energy consumption increase sharply, but the molten plastic may also decompose due to the long residence time in the barrel, thereby affecting the product quality.

As a professional injection molding manufacturing enterprise, Haina Company is equipped with a full range of injection molding equipment from precision to large-scale, capable of meeting the diverse production needs of customers.

💡Monochrome injection molding machine matrix 

The coverage range has expanded from 120 tons to 600 tons, forming a complete gradient. Whether it is precision electronic components or medium-sized automotive parts, Haisan can carry out efficient and high-quality production at the most suitable tonnage:

💡LSR (liquid silicone rubber) and dual-color injection molding capabilities

In addition to the conventional single-color injection molding, Haisan also equips professional LSR injection molding machines and dual-color injection molding machines:

Among them, the 1000-ton dual-color injection molding machine is an important symbol of Haishan Company's large-scale manufacturing capacity. The dual-color injection technology enables one machine to form products of two materials or two colors at once, and is widely used in fields such as car lamps, seals, and products combining soft and hard materials. The 1000-ton clamping force indicates that Haishan has the ability to undertake large-scale dual-color injection molding projects, which is quite rare in the industry. 

Summary

From 120 tons of FANUC precision injection molding, to 600 tons of medium-sized single-color part production, and then to 1000 tons of large-scale dual-color injection molding - the equipment matrix of Haina Company has achieved full coverage of mainstream injection molding tonnage.

What does this mean?

• Customers no longer need to split the same project among multiple suppliers. Hansan can complete all production from precision small parts to large components in one step.

• Each product can be produced on the most suitable tonnage equipment, ensuring quality and optimizing costs.

• The 1000-ton dual-color injection molding capacity is the foundation for Hansan to undertake complex and large-scale injection molding projects.

Choosing Haina means choosing a molding manufacturing partner that can handle from "small" to "large" and from "single color" to "dual color" with ease.