The birth of the sofa | The production process and process of a sofa

The most typical piece of furniture is the sofa. After a busy day, we usually like to lie down on the comfortable sofa at home to rest. It can be said that the sofa is the furniture we touch most every day besides the bed. So, how is the sofa made?

The basic production process of a sofa set can be divided into: making the sofa frame, laying the foundation, cutting the sofa feet, coloring the sponge, gluing and nailing, and then finishing the sofa set with a cover.

Sofa frame production, base

Before the sofa is made, it is necessary for experienced craftsmen to draw the pattern. Without a good pattern, it is impossible to make a good sofa. Because every joint needs to be carefully calculated, and a slight difference in the appearance will not be a small difference.

After the board is ready, the sofa frame will be officially made. The current sofa frame is mainly divided into two materials: solid wood and composite board. The sofa frame is similar to the human skeleton and supports the entire sofa. The firmness of the sofa frame structure and the rationality of the design angle will affect the quality and use function of the sofa.

Solid wood frame production process

1. Drying Wood

Because wood contains moisture, the moisture content of wood can be controlled within 12% by drying, which can greatly reduce the deformation rate of wood. It is not easy to deform, rot and be eaten by insects.

2. Cutting

Cut out the backrest, armrests and other parts according to the sample drawing. Then the wood is sanded, wind sheared, trimmed and other processes are carried out.

3. Mortise and tenon reinforcement

The various parts of the sofa frame are tightly combined using the mortise and tenon method.

The mortise and tenon joint technique has been passed down in China for thousands of years. If you have an old furniture set at home, it must be spliced using the mortise and tenon joint technique. Otherwise, it will not be so strong. In addition, in order to strengthen the frame, each joint of the frame must be positioned using a precisely cut wooden tripod, and after being connected with nails or screws, white glue must be applied. (Reinforcement)

There are some small details to pay attention to here, and the joints must be sewn accurately.

4. Primer

The main thing is to add springs and bandages to the sofa. Put elastic bands on the sofa back frame. Because the back frame does not bear as much force as the seat frame, elastic bands can be used. Some people also use so-called black leather belts, which are made from discarded tires.

Springs are usually made of serpentine springs (also called S-shaped springs) to increase the bearing capacity of the sofa, and then fixed with special spring clips to reduce noise. The springs must be installed firmly and there should be no movement when pressed hard. The quantity depends on specific needs.

5. Net cloth

The cushion area is covered with a breathable mesh fabric, which can effectively prevent moisture and allow ventilation, thus increasing the life of the sofa.

Sofa filling

The filling materials in the sofa include sponge, down and artificial cotton. The types of sponge are mainly high, medium and low density sponge. The sponge in the sofa will affect the sitting feeling of the sofa. The quality of the filling sponge will also affect the service life of the sofa.

(1) Cut out sponges of different shapes according to the shape of the sofa.

(2) Wrap the sponge around the outside of the sofa frame.

Jacket cutting and sewing

Each surface of the sofa you see is a board, called a leather board. The leather board is placed on the cowhide for painting, and attention is paid to avoiding unqualified leather. Leather cutting will begin later.

You can also use a blade to cut it. Of course, if it is cloth, you can use electric scissors to cut multiple layers at a time.

After cutting the leather, the sofa cushions, armrests, and backrests are classified and packaged so that the next "sewing" can be carried out smoothly and efficiently.

Sewing, flat lathe, will cut the leather, piece by piece, the sewing process is very important, which is related to the appearance of a sofa set craftsmanship quality.

Pressed line

For single-needle sewing, both single and double lines need to be pressed to a margin of 5 mm. The lines should be symmetrical, straight and clear, with regular and uniform directions.

Pressing the seam. Double needle sewing machine presses the seam, overlaps the fabric and places it at the joint of the flat sewing machine, and the double needle sewing machine will overlap and sew it firmly. The whole outer cover production process of fabric sofa is the same. However, cutting cloth is easier than cutting leather. But for skilled workers, it is the same.

Transfer door

Put the sewn leather or cloth cover on the sofa. Fix it with nails according to the appropriate positioning of the sofa surface. The fabric sofa needs to be equipped with hardware such as zippers. These processes are completed.

After that you can see a leather sofa like this——

Or a fabric sofa like this——

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