Advantages and disadvantages of pine veneer plywood
To understand the advantages and disadvantages of the pine wood plywood used in furniture, we must first know what is pine plywood. Wood panels made of intact log wood are solid wood panels. The pine plywood is made by hot pressing of three or more layers of veneer or thin board wood glue. The environmental protection grade reaches E1. It is the most commonly used material for manufacturing office furniture, cabinets and other types of furniture, and it is also the most cost-effective material on the market. Why are pine plywood so popular in the furniture industry?
Pine plywood are made of strong and durable materials, with good moisture absorption and air permeability, which are good for human health and do not cause environmental pollution. Due to the high cost of pine plywood 4x8 and the extremely high requirements for construction technology, they are not used much in decoration. Healthy and environmentally friendly pine veneer plywood avoid more use of liquid glue during the sheet forming process. Formaldehyde exists in the liquid glue. Therefore, pine plywood are more environmentally friendly and healthier than plywood. The pine plywood is made of multi-layer plywood arranged in a crisscross pattern as the base material through several processes such as cold pressing, hot pressing and sanding. The unique production process and raw material selection of 12mm pine plywood determine its unique quality.
The pine board is composed of solid wood surface layer and solid wood base layer. Compared with the price of expensive solid wood boards, pine plywood are more economical and affordable. The solid wood flooring still has two major phenomena of deformation and cracking. The pine plywood are glued vertically and horizontally, and through high temperature and high pressure, they solve the two major shortcomings of the deformation and cracking of the solid wood boards from the aspect of internal stress.
To sum up, pine veneer plywood is suitable for all kinds of furniture, and its environmental protection is better than particle board. It's just that the pine ply cannot be repaired after the blisters are damaged. Compared with other materials, pine boards need to be carefully taken care of, and they must be taken care of at ordinary times. They are waterproof and anti-scalding and prevent sunlight; pine plywood have fewer and fewer resources, higher prices, and are easily deformed by the environment. Of course, compared to particleboard, pine plywoos is still the first choice!
Matters needing attention in the selection of pine veneer plywood
Cracks: There are two types of cracks: longitudinal cracks and ring cracks. The longitudinal cracks penetrate the wood texture and will gradually extend; the ring cracks mostly occur between the wood textures and generally do not extend.
Worm eyes: The dazzling eyes left after moth eaten. After the veneer wood is artificially dried, the worms have died, and the worms will no longer develop, but the existence of worm eyes will affect the appearance.
Texture: The texture of good wood is a regular texture, such as the texture is messy or the grade of the plank is low.
Decay: Wood tissue is necrotic, mildewed, and discolored, resulting in loose texture and reduced strength.
Penetration: After the veneer is hot-pressed and glued, the adhesive leaks from the pores of the veneer to the outer surface to form glue spots. Its adverse effect is mainly to cause spots on the surface of the workpiece after painting.
Bubbling: Bubbling is the swelling and bubbles of the veneer after the veneer is glued. The repair process is troublesome and greatly affects the production efficiency.
Cracking: After the veneer is pasted, there is a gap larger than 0.3mm on the surface, which often appears in the veneer deformation or splicing. This is also the most common defect in the veneer pasting process
Lack of glue: Refers to the partial lack of adhesive or discontinuity of the glue layer between the substrate and the veneer after hot pressing, mainly caused by uneven glue application or low adhesive viscosity.