In daily life, we often come into contact with plywood, many people do not know about plywood, what is plywood, according to plywood manufacturers, plywood is made of wood segments cut into veneer or wood square planing into thin wood, and then glued with adhesive three or more layers of plate material, generally with odd layers of veneer, And the fiber directions of the adjacent layers of the veneer are glued to each other vertically.

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Plywood is one of the commonly used furniture materials, one of the three wood-based panels, can also be used for aircraft, ships, trains, cars, construction and packing boxes and other materials, a group of veneers generally according to the direction of adjacent layers of wood grain each other vertical group of billets glued together, generally the table board and the inner board is matched in the center layer or the two ends of the board core, With the veneer after gluing according to the direction of wood grain crisscrossed into the slab, under heating or not heating constraints, the number of layers is generally odd, a few also have even numbers, the vertical and horizontal direction of the physical, mechanical properties of the difference is small.

Commonly used plywood types are plywood, plywood and so on, plywood can advance the rate of wood plywood, is a primary way to save wood.

Now the furniture board, because the size of the wood is different, sometimes the need for splicing, today let the plywood manufacturer to introduce us the problems and treatment methods when the plywood splicing.

One is that it is too tight or too loose after stitching, and this problem is mainly caused by the improper adjustment of the feeding squeeze roller of the stitching machine. In such a case, we only need to adjust a pair of conical squeeze rollers under the working table of the stitching machine to make it suitable.

The second kind often appears is that the end of the board is not uniform, this situation is mainly composed of improper joint operation, in the longitudinal tape splicer feed when the end of the two boards are not aligned or the board is not rectangular when the edge of the board, to treat this situation needs to know that the board should have a benchmark when the edge of the board, can not cut the board into parallelogram.

The third situation is that the adhesive tape is not firmly pasted after the plywood splicing, resulting in not strong, such a situation is due to the adhesive tape is not sufficiently wet, the temperature of the heating roller of the plywood manufacturer stitching machine is too high or too low, the pressure of the rolling rod is not possible, the treatment method is simple, the adhesive tape can be fully wet with water, check the heating roller, and increase the pressing force of the rolling rod.

Plywood is a modern use of more board products, about the purchase of plywood, plywood manufacturers hereby to help you comb out, plywood manufacturers suggest following the following points, so that you choose a satisfactory product.

To choose those wood grain is clear, the front smooth, no rough feeling of plywood board, pay attention to the wood grain and color of the board are similar, so that the match is more beautiful, the surface of the plywood can not appear hard, bruises, scars and damage and other defects, pay attention to whether the board deteriorates.

From the side to observe whether the plate degumming phenomenon, the method of detecting whether the splint appears loose glue is to knock the various parts of the plate by hand, the sound is brittle to prove that the quality is good, the sound is stuffy, the splint has appeared loose glue phenomenon, pay attention to the tightness of the splint joint and no uneven phenomenon.

Plywood production methods of the general plywood manufacturers, dry method, dry and wet method three, single harmonic wet refers to the veneer with glue pressure monotonous or wet veneer, cold and hot refers to hot pressing or cold pressing welding.

Defects of wet and hot production: due to the high water content of the veneer, long hot pressing time, low production rate, because it is made of wet and hot method, the internal stress is large, simple warping deformation, and its bonding strength is low.

The defects of the dry process are: due to the long contraction time, so the plywood production cycle is long, more suitable for small business production, dry heat production: this is a rotary cut veneer, after monotonous, the water content of the veneer is between ~ ~, hot pressing the blank into the plate, the production characteristics of the method are: High temperature bonding, short time, large output, high bonding strength, good product quality, flat surface lubrication, not easy to deformation, suitable for all types of adhesive production.

Because the method overcomes the lack of heating and monotonous methods, the production is more active, large, medium and small enterprises can be produced, and the products are more suitable for the needs of the market, therefore, the plywood produced by domestic and foreign enterprises is usually produced by dry heat method.