The sofas on the market are roughly divided into structural processes:
A. Solid wood structure--Due to the shortage of wood resources, the hard wood used for furniture structure is becoming scarce, and the drying treatment of hard wood requires very high technical means, through tenon and tenon joints. Therefore, sofas with real solid wood structure are quite expensive, and it is necessary to ask about the types of solid wood and the technical means of the factory. Such structural sofas are quite rare.
B. Board-wood structure-Use cheap wooden squares as beams and upright supports, combined with multi-layer composite boards to make structural skeletons by nailing. This structure has low material cost, simple manufacture, convenient molding, and high manufacturing efficiency. It is a widely used process structure. Existing shortcomings: The multi-layer composite sheet has high formaldehyde content, which is easy to cause pollution and emit a large amount of peculiar smell. The firmness is generally easy to be deformed by moisture, and the service life is short. When choosing, pay attention to shaking the sofa to check the stability of the structure, open the bottom zipper and take a deep breath to smell whether there is any peculiar smell, and sit down again to feel the impulse response.
C. All-steel welded structure-ordinary standard square steel pipes are welded and formed under standard molds for anti-rust treatment. This process is difficult to form, long working hours, and high technical requirements. Advantages: good structural stability, high strength, good environmental protection, and long service life. Most European sofas adopt this structure, which is the future development direction of domestic sofas.
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