Sofa Soft Hardness Tester: Precision Equipment for Comfort and Durability Testing

This tester is widely used by furniture manufacturers, R&D labs, and quality inspection agencies to evaluate material performance and seating comfort.

1. What Is a Sofa Soft Hardness Tester?

A Sofa Soft Hardness Tester is a mechanical device that measures how much a sofa or cushion compresses under a specific load. It simulates real human sitting pressure to assess cushion hardness, elasticity, and recovery ability.

Main Testing Functions:

• Evaluate cushion firmness and comfort index
• Measure foam elasticity and recovery rate
• Assess seat uniformity and deformation resistance
• Verify compliance with national and international furniture standards

2. Technical Specifications

• Load range: 0–2000 N (adjustable)
• Displacement range: 0–300 mm
• Load accuracy: ±1%
• Displacement resolution: 0.01 mm
• Testing speed: 50–250 mm/min adjustable
• Control system: PLC or computer-controlled servo system
• Load sensor: high-precision strain gauge load cell
• Force application: circular indenter simulating human sitting pressure
• Display: real-time digital or graphical interface
• Applicable standards: ISO 3386, ASTM D3574, EN 1957

The system ensures precise and repeatable results, enabling accurate evaluation of foam and cushion materials used in sofas, chairs, and automotive seats.

3. Working Principle

The tester uses a servo motor to drive an indenter that compresses the sofa surface at a constant rate. The load cell measures the resistance force, while the displacement sensor captures the deformation depth.
The resulting load–displacement curve reflects the cushion’s hardness, softness, and resilience characteristics.

Testing Procedure:

1. Place the sofa cushion on the test platform.
2. Set load parameters and compression depth via the control panel.
3. Start the test – the machine applies downward force at a controlled speed.
4. Record and analyze the load–displacement curve to determine firmness and comfort.

4. Key Features and Advantages

• High accuracy: ±1% load precision ensures reliable test results.
• Human-body simulation: Circular indenter replicates real sitting pressure.
• Advanced control: Servo motor and PLC ensure smooth, stable operation.
• Comprehensive analysis: Automatically generates force–deformation curves.
• Standard compliance: Fully meets ISO and ASTM testing protocols.
• Durable design: Built with robust steel frame and ergonomic layout.

These features make the Sofa Soft Hardness Tester indispensable for developing comfortable, durable, and high-quality furniture.

5. Testing Applications

The Sofa Soft Hardness Tester is used across furniture and automotive industries for evaluating cushion and foam materials.

• Residential sofas and lounge seating
• Office and commercial seating systems
• Automobile seats and backrests
• Mattress foam and bedding products
• Public seating and auditorium chairs

It ensures that every seating product provides optimal comfort and maintains structural integrity over time.

6. Why Choose Our Sofa Soft Hardness Tester

Compared to conventional test equipment, this machine combines smart control, high precision, and intuitive software to deliver consistent results with minimal operator effort.

Advantages Overview:

• One-button operation with automatic calibration
• Real-time data visualization and automatic report generation
• Long service life with low maintenance requirements
• Compatible with multiple international test standards

Conclusion

The Sofa Soft Hardness Tester provides a precise and efficient method to assess the comfort, firmness, and quality of sofa and cushion materials.
By integrating advanced servo control and load sensing technology, it helps manufacturers ensure their products meet the highest comfort and durability expectations.

Investing in this equipment means achieving consistent quality, enhanced customer satisfaction, and full compliance with global furniture testing standards.