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HOW MUCH DO YOU KNOW ABOUT THE INTERNAL STRUCTURE OF A SOFA?

Sofa is a must-have item for home and office. Everyone is familiar with it, but do you know the internal structure of the sofa you often use? Only by understanding the internal structure of the sofa and the materials used in its manufacture can you choose a good sofa. Yipin Oudi will give you an in-depth understanding of the inner structure of the sofa.

Generally speaking, the sofa is composed of the main frame, the sitting structure, the outer fabric and the filling.

1. The main frame of the sofa

Currently, the main frames of sofas on the market mainly include solid wood structures and board-wood combined frame structures. The board-wood combined frame structure is commonly used because this structure has a simple manufacturing process, convenient molding, and high efficiency, but its cost is higher than that of solid wood structures. It is relatively low, so there are currently many sofas on the market that have wood-board combination structures.

2. The seat structure of the sofa

The sitting surface is the main part of the sofa that bears force, and is also a key part of the comfort and service life of the sofa. The seating surface structure of the sofa mainly includes rubber bandage (good elasticity but short service life, easy to collapse), wooden plate (inelastic, poor sitting feeling but long service life), snake-shaped steel spring (good elasticity, good sitting feeling, easy to use) long life).

3. Sofa leather and fabrics

Leather materials are divided into genuine leather and PU leather. Genuine leather is divided into yellow cowhide and buffalo leather. According to the number of layers, it can be divided into first layer leather, second layer leather and third layer leather. According to the origin, it is divided into domestic leather and imported leather. The imported leather has the best quality, environmental protection and color. It has high fastness, good elasticity and breathability, and high mechanical strength, especially high tear strength and tensile strength.

The density of the fabric is related to the mechanical wear and tear life of the sofa over a long period of time. The sofa fabric should be relatively thick. Currently, most sofa manufacturers in my country use blended fabrics or chemical fiber fabrics.

4. Sofa stuffing

There are three main types of fillings for sofas: soft polyurethane foam (commonly known as sponge), down filling, and artificial cotton filling. Under normal circumstances, it is more suitable to use high-resilience sponge as the cushion filling of fabric sofas on the market, combined with artificial cotton filling to increase comfort and service life.