1、 Raw paper:
Melamine impregnated paper is divided into three categories: plain paper, printing paper, and wear-resistant paper. According to the purpose of the product, it can be divided into two categories: face paper and base paper. Plain paper has the difference between original color paper and printing paper. Original paper is the best, with a pure color that is not easily discolored, while printing paper has a more uneven color Generally, solid colored printing paper is used as the base paper (commonly used for laminate flooring, also known as balance paper)
Wood grain paper is printed on the basis of base paper, and the number of plate rollers used for printing varies according to the realistic requirements of wood grain.
Art printing paper: Among them, Senjia's art series is the most leading.
2、 Ink:
Printing cannot do without ink, and the ink used for melamine wood grain paper is water-based ink. There are two types of ink: domestic ink and imported ink. The main difference is the issue of long-term weather resistance. To identify the printing quality, you can use a magnifying glass to observe the amount of "white space" left. If there is too much white space left, it will affect the purity of the color. In addition, a large amount of white space can be seen with the naked eye, and the quality is very average. worthless. In addition, it is not allowed to have ink or inaccurate color matching.
If the color is burnt yellow, the ink quality is poor.
3、 The content of melamine determines the wear resistance quality of melamine surface. Moisture proof and mold proof improve quality.
The best impregnated paper has a melamine content of 100%, followed by 70%. Currently, impregnated paper with a 70% content is mostly used. The shelf life of pure melamine impregnated paper can reach more than 1 year.
The worst example is sugar glue that cannot flow in, which acts as melamine glue. If exposed to air for 5 minutes, it will immediately form a bonding state. Therefore, it should be placed in an air-conditioned room to prevent premature bonding and curing. Sugar is soluble in water, so it is not moisture-proof. Before long, due to wiping, the protective layer on the surface is easily melted off. Therefore, manufacturers of sugar coated paper have added a large amount of curing agent in order to address this issue, resulting in quality problems such as premature curing that may expire within a week or 15 days. Simple detection method: Place a wet towel on the sticker panel and check for any surface changes, such as bubbles or bumps, the next day. Whether the surface gloss is damaged after wiping.
There is a type of impregnated paper that uses urea formaldehyde adhesive, with melamine ratios of 60%, 50%, 40%, and 30%. Although better than sugar glue, the shelf life is generally only up to 3 months, and some are even shorter. The simple identification method is:
When the surface of the board is burned by fire, there is a smell of urea.
The issue of formaldehyde release. There are also differences between E1. E2. and E0
4、 The weight (thickness) of paper
Melamine paper can be divided into many types based on color requirements, printing requirements, impregnation yield requirements, and usage requirements
Category: There are several types such as 70g, 80g, 85g, 90g, 110g, 120g, 135g, etc.
Generally, 80 grams of domestically produced titanium white hemp veneers are sufficient for pressing, but it is not suitable for pressing matte surfaces as it may cause a phenomenon of bottom penetration. And producing 85 grams of hemp flour, 90 grams is enough.
5、 Curing agent
A simple melamine board also involves the issue of stain resistance. In addition to the difference in impregnating glue, there is also an important factor that is the quality of the curing agent There is a distinction between imported and domestically produced products.
6、 Wear resistant paper
Wear resistant paper is a type of adhesive paper impregnated with melamine and containing aluminum oxide. Wear resistant paper makes the surface of reinforced composite flooring shiny and wear-resistant. It has the characteristics of high transparency, wear resistance, no defects, fire resistance, and easy maintenance.
There are several types of wear-resistant paper, such as 18g, 22g, 45g, etc., and the wear resistance coefficient varies depending on the production process. Currently, wear-resistant paper is widely used in reinforced wood flooring. Good wear-resistant paper can withstand a test of 6000 revolutions per minute. Furniture boards are currently not widely used.
7、 Decorative base paper
The weight range is 70-110g/m2. Also known as "melamine impregnated paper" or "titanium white paper", it has excellent covering power and weather resistance (color fastness). After printing and dipping, the raw paper is used for reinforcing wooden flooring, office furniture pressure plates, etc.
8、 Melamine impregnated adhesive film paper
Features: It can be used for laminating substrates such as particleboard, medium density fiberboard, or hard fiberboard. And it has natural decorative effects and advantages such as damage resistance, acid and alkali resistance, scratch resistance, corrosion resistance, and easy cleaning. Protection: Store under sealed conditions with relative humidity of 55%~65%, humidity of 10~30 ℃.
9、 There are also paint paper, PU paper, etc
According to different impregnation processes and usage requirements, pre impregnated paper and post impregnated paper can also be produced. Currently, some companies are producing softened melamine impregnated paper, which can be bent but not broken.