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Veneer decoration is a crucial step in the production of panel furniture. It not only improves the surface resistance of the substrate, including wear, heat, water, and corrosion, but also enhances and improves the material's strength and dimensional stability. However, veneer lamination often presents challenges. Zhoubao has identified two common issues for you to explore.
01. Bubbling and degumming occur in large or small areas
If this happens, first peel the veneer from the substrate surface and observe the adhesion between the veneer, substrate, and adhesive at the blister. If there is almost no adhesive left on the substrate surface, it indicates that the substrate and the adhesive are not compatible. You can replace the adhesive or sand the substrate surface to improve the surface quality and thus the bonding strength. If there are many substrate fragments on the torn veneer, it means that the internal bonding strength of the substrate does not meet the strength requirements of the adhesive veneer. The simplest solution is to choose a more suitable substrate.
02. Uneven surface after finishing
The main reason for unevenness after finishing is the large thickness deviation of the base material. The thickness deviation can be reduced by sanding so that it can meet the requirements of the veneer process.
Whether it is thin wood veneer or decorative paper veneer, some quality problems will arise during the processing. Summarizing the above two points, the main problems encountered in the veneer process are the uneven surface of the substrate and the substandard surface quality.
The smoothness of the substrate surface, the bonding strength of the inner surface, and the uniformity of thickness will all affect the quality of the veneer. At the same time, the surface of the substrate often has small areas of glue spots, paraffin spots, oil stains and other impurities, which will affect the penetration of the adhesive, making it difficult for the substrate and the facing paper to be well bonded, and thus causing problems such as debonding and bubbling.
The process of treating the substrate surface is the key to solving the bonding strength of veneer.
LSB high energy home board
Skin-feeling ultra-flat finish all-round
LSB high-energy home panels are made from high-quality pine wood with few boils and wormholes grown in the area between 34° and 47° south latitude. After degreasing, they are planed into slender planings with uniform and flat structure. They are then glued with formaldehyde-free MDI glue under high temperature and high pressure to form artificial boards.
Unlike the poplar wood commonly used in the industry, which is relatively soft and has low strength and hardness, and the eucalyptus wood, which has high internal stress and is prone to cracking and has a relatively hard texture, pine wood has straight texture and medium texture; the core wood is resistant to corrosion and the sapwood is easy to process into anti-corrosion.
The key points are:
Fully automatic three-time sanding and one-time forming
Meet various finishing pressing needs
LSB finished unfaced board
LSB high-energy home furnishing board is formed in one piece through 65 working steps. The board density, strength and thickness are uniform and consistent. There is no chipping or burr during processing, and no need to waste knife. The fully automatic equipment sands the board three times, and the board surface is super flat, comparable to medium and high density fiberboard. It can be pressed with various finishes such as triamine paper veneer, UV, PET, etc., and the pressing efficiency is higher.