Polyurethane Foam Injection Molding Machine

Polyurethane foam injection molding machines are industrial equipment specifically used to produce polyurethane foam products. In production, its main raw materials are polyols and isocyanates. Polyols are usually derived from petroleum or natural oils and have different molecular weights and functions, while isocyanates are highly reactive chemicals. In addition, catalysts, surfactants, and foaming agents are added to control the reaction and foam characteristics. Its working principle is based on the reaction between polyols and isocyanates. When these two ingredients are mixed, a chemical reaction occurs to produce polyurethane. The reaction is catalyzed by various catalysts to accelerate the process.

Features

1. Precision Injection Capability
The polyurethane foam injection molding machine is available with different screw diameters of 28mm, 30mm, and 32mm, and corresponding screw length-to-diameter ratios of 20.1, 18.8, and 17.6. This allows for highly precise control of the injection process. In addition, its theoretical shot volume range is 72 to 94 cm3, enabling accurate delivery of the right amount of material for different product requirements. Whether it is a small and delicate foam part or a larger part, the machine can be adjusted to deliver the specific volume required. Furthermore, the shot weight range is 65 to 85 grams, further enhancing precision. This level of precision is essential for producing high-quality products with consistent dimensions and properties. In the production of automotive foam parts, specific shot weights and volumes can be programmed to meet the precise specifications of each part, ensuring consistency across batches.

2. Efficient Ejection Mechanism
The 64mm ejector stroke and 31 kN ejector force of this polyurethane foam injection molding machine ensure smooth ejection of molded products. This reduces the risk of foam product damage and improves production efficiency. After the foam has cured, the ejection system quickly and efficiently removes the product from the mold, ready for the next production cycle. In a high-volume production environment, this efficient ejection mechanism is essential to maintain a smooth production flow.

3. Powerful Performance
The polyurethane foam injection molding machine is equipped with a pump motor with a power of 11 kW and a heater with a power of 6.3 kW. The maximum pump pressure of 140 MPa ensures smooth operation of the stable hydraulic system. This combination of power sources enables the machine to efficiently handle different production loads. For example, in the continuous production process of furniture foam pads, the powerful pump motor and heater ensure that the polyurethane raw materials are properly melted and injected at the required pressure.

4. Compact Design
With machine dimensions of 3.8x1x1.8 meters and a weight of 2.5 tons, the A70/C130 is relatively compact. This makes it easier to install and integrate into production facilities with limited space. The 25 kg hopper capacity and 95-liter tank capacity provide sufficient raw materials and hydraulic oil for continuous operation. In small to medium-sized production facilities, the machine's compact size is a significant advantage as it does not take up excessive space while still providing powerful performance.

5. Powerful Clamping System

The polyurethane foam injection molding machine is equipped with a powerful clamping system that can provide a clamping force of up to 700 kN. This feature ensures the stability and safety of the mold during the injection process and prevents the mold from being deformed or damaged.

Application

1. Automotive Industry
In the automotive industry, polyurethane foam injection molding machines are widely used to produce components such as seats, headrests, and armrests. The foam provides comfort and support to passengers while also reducing vibration and noise. For example, a typical car seat can contain up to several kilograms of polyurethane foam. The machine can be programmed to produce foam with specific density and hardness levels to meet the requirements of different car models and customer preferences. In addition, the excellent insulating properties of the foam help regulate the temperature inside the car, reducing the need for excessive air conditioning or heating and saving energy.

2. Furniture Industry
The furniture industry is another major user of polyurethane foam injection molding machines. Sofas, mattresses, and cushions are often manufactured using this technology. The foam can be customized to provide different levels of softness and support depending on the intended use. For example, a mattress may require a higher-density foam for better support, while a sofa cushion may require a softer foam for comfort. The machine can produce large quantities of foam quickly and efficiently, meeting the high demand of the furniture market.

3. Construction Industry
The construction industry also benefits from polyurethane foam injection molding machines. Foam is used for insulation purposes, reducing heat transfer and energy consumption in buildings. It can be sprayed or injected into walls, roofs, and floors to create a seamless insulation layer. For example, buildings insulated with polyurethane foam can save up to 30% on heating and cooling costs compared to buildings without insulation.

4. Electronics Industry
Foam produced by polyurethane foam injection molding machines is widely used in packaging materials for electronic equipment. These foam packaging can effectively absorb and disperse external impact forces, preventing electronic components from being damaged during transportation and storage. The damage rate of electronic equipment packaged with polyurethane foam is reduced by more than 30% compared with traditional packaging materials, thus significantly improving the reliability and service life of the product.
In addition, polyurethane foam injection molding machines can also produce various mats and gaskets, which play a vital role in electronic devices. For example, at the connections between circuit boards and housings and between electronic components, polyurethane foam pads, and gaskets can provide stable support and cushioning, preventing components from being displaced or damaged due to vibration or temperature changes. This not only ensures the normal operation of the electronic device but also improves its overall stability and durability.

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