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Wood Coatings Introduction

PUdaily, Shanghai- Thanks to the boosting high-end wood furniture market, HDI enjoyed an ever-growing trend over the course of last few years. Notwithstanding the highly segmented market, its contribution to HDI sector cannot be disregarded. For the being, sluggish economic growth at both home and abroad lowers the rise of wood coatings. And yet, the sector is believed to be motivated by mounting export along with the recovery of the economy worldwide. Also, considering that China will see more demand for high-end furniture and the price of HDI hardener is slipping, the competitiveness and demand of HDI as well as TDI hardener will keep increasing. The classification and features of wood coatings are concluded for your reference.

Wood coatings are employed for decoration and protection of wooden products such as furniture, shoe cabinet, and cupboard.

Classification

Wood coatings involve nitrocellulose coatings (NC), PU coatings, water-based coatings, PE coatings and UV-curable coatings. Their raw materials, environmental protection property, usage and effect vary among different types.

NC coatings

Nitrocellulose coatings are used extensively in the furniture industry due to their “user friendliness” and the ability to be applied by multiple coats, particularly when used in conjunction with various color applications such as NGR stains, overall stains, sap stains, toners, fillers, wiping stains and glazes. Nitrocellulose coating systems are easily repaired throughout the finishing process. Rubbing and polishing are easily accomplished.

PU coatings

PU coatings have excellent versatility and exceptional chemical and physical resistance. They produce hard surface topcoats with excellent results. It is suitable for various uses and product sectors.

PE coatings

PE coatings are resistant against many acids as well as against sea water. They are shock and impact resistant, malleable, electrical insulating and have good gliding properties. In addition, their resistance to UV-rays makes them suitable for outdoor use. Polyethylene coatings are produced with the fluidized-bed sintering procedure.

UV-curable coatings

The industrial wood finisher has essentially three options in types of UV-curable coatings to use—100% UV, water-reduced UV and solvent reduced UV. Each type of UV-curable coating can be applied by virtually any method of application. The selection of the UV-curable coating type applied by any method is really a matter of finish build or thickness, the ease to achieve certain finish subtleties (gloss, leveling, etc.), and the ease of use of the coating system. In general, if 100% UV-curable coatings can be used to produce the desired finish quality, it is best to set a course of action to use them. Costs, operation expenses and reporting requirements will be most advantageous with 100% UV-curable coatings. If very thin film builds are desired, less than 100% actives may be necessary and the use of water-reduced UV-curable coatings is most preferential

Water-based coatings

Water-based coatings consist of acrylates, water-soluble resins, additives and water. Coatings dry through the evaporation of the water. During this physical drying process, the dispersed particles fuse to form a homogeneous film. The art of producing water-based coatings is in finding the right formulation. The coating must always have the desired properties, whether in liquid form, during application, or as a dried coating film.