When it comes to the comfort of a sofa, several factors play a crucial role, and understanding them is essential for designing furniture that meets the ever-increasing demands of consumers.

1. Improving Foam Layers

To heighten the comfort of a sofa, attention must be given to the composition of the foam layers. Enhancing the softness of the middle or bottom layer concerning the surface layer can alter the average pressure on the seat.

This adjustment aims to alleviate pressure on the thighs when users are seated, thereby minimizing any uncomfortable sensations.

2. Impact of Frame and Springs

The sofa's frame is fundamental in determining its shape and providing overall support. Ensuring the frame's strength is paramount, with particular emphasis on the corners and junctions of its parts.

Rigorous testing for strength and stiffness is necessary to meet established standards before proceeding with the design. Additionally, various types of springs, such as serpentine springs and medium concave springs, contribute differently to the overall comfort, based on their placement within the sofa.

Considering the warmth of the sofa fabric is also vital, as it can affect the skin's respiratory function and potentially lead to discomfort or skin issues. Different materials, such as everyday leather, imitation leather, and fabric, offer distinct levels of warmth and comfort, factors that should be carefully considered during sofa design.

3. Seat Height and Depth Considerations

Optimal seat depth is crucial for user comfort. A well-designed sofa should provide a comfortable experience for the calf, preventing a sense of pressure on the lower limbs.

Balancing seat surface pressure is essential to avoid hindering blood circulation in the lower limbs and buttocks. Adequate lumbar support is necessary to prevent tension in the lumbar muscles, reducing discomfort and enhancing overall well-being.

Research on seat height and depth emphasizes the importance of even pressure distribution, lower average pressure, and reduced pressure under the thighs while seated. These factors contribute to minimizing fatigue and improving overall work efficiency, making appropriate seat depth and height pivotal for maintaining human health.

The sofa, as a quintessential piece of seating furniture, is now subject to higher expectations regarding comfort and functionality. Analyzing furniture structures from the consumer's perspective is imperative, with a focus on extracting key elements influencing comfort.

To ensure optimal sofa comfort, strategic use of different foam densities, placement of springs, and thoughtful consideration of seat height and depth are essential. This holistic approach aims not only to relieve physical fatigue but also to enhance the efficiency of rest and work, meeting the evolving needs of discerning consumers.