Melamine (MF, chemical formula: C3H6N6) melamine plastic tableware belongs to high polymer whose monomers are formaldehyde and melamine. In the reaction, 37% formaldehyde aqueous solution is used, and the molar ratio of formaldehyde and melamine monomers is 2~3.
Chinese name melamine plastic tableware
Other name imitation porcelain tableware
Tableware ingredient melamine
Production process preheating program plain surface program

The results show that with the increase of formaldehyde dosage, the amount of formaldehyde binding also increases, and the reaction is easy to be carried out. Melamine resin obtained from different hydroxymethyl melamine can be prepared by changing the amount of formaldehyde. When the pH of the reaction system is 8.5, the side reaction is less and the reaction is easy to control. The temperature is high, the reaction speed is fast, and the binding amount of formaldehyde is not affected in the range of 54~80℃. The first step of the reaction is to form different numbers of N-hydroxymethyl substituents, followed by further condensation into a linear resin. Generally speaking, the reaction conditions are different, the molecular weight of the product is different, from soluble in water to insoluble in water, and even can generate insoluble and insoluble solids. Melamine resin does not cure at room temperature, and generally needs to be heat-cured at 130~150 ° C. The results show that adding a small amount of acid as catalyst can increase the curing rate. The cured melamine formaldehyde resin is colorless and transparent, stable in boiling water, and can even be used at a high temperature of 150 ° C, with self-extinguishing, arc resistance and good mechanical properties.

Production technology：1， Preheating procedure: Use the raw material box according to the weight of the tableware required to be produced, and put it into the high profile wave to preheat evenly, so that the powdered raw material block.,2， Plain surface process: pour the preheated and caked raw materials into the mold, start the mechanical plain surface process, through high temperature and high pressure, curing molding.,3，. Decal program: Brush the cover powder of the flower paper according to the shape of the flower cut, according to the requirements on the plain surface molding tableware, the flower paper should be pasted, the decal orientation is moderate, so that people look beautiful and generous, stick the flower to start the mechanical printing program.4. Gold processing: After the product is pasted, evenly sprinkle the polishing powder on the surface of the product, the polishing powder can not be scattered less, otherwise it will affect the color of the product, of course, it can not be scattered more. Then start the machine, after mechanical high temperature and high pressure, curing, the surface of the product has a porcelain general shine.
5. Polishing procedure: After the product is produced, it should be polished and polished, because the products produced have raw edges, which is not conducive to the use of people’s lives and easy to cause damage to people’s hands and mouths; Therefore, grinding and polishing are essential, and the raw edge of the product can be removed by grinding and polishing, so that the product looks more beautiful and the edge is smoother.
6. Inspection and packaging procedures: after the product has passed the grinding and polishing operation, it enters the inspection link. In order to ensure the quality of the product and strictly control the quality inspection, there should be an initial inspection and re-inspection, and the unqualified products are picked out and then put into the warehouse for packaging

Melamine Tableware Knowledge:

Melamine plastic tableware, also known as imitation porcelain tableware, is widely used in the fast food industry and children’s catering industry for its lightweight, beautiful, low temperature resistance (can be directly put into the refrigerator), resistance to boiling (can be steamed, boiled), pollution resistance, not easy to break and other properties, and is loved by consumers and children.
How to choose tableware
Due to the high price of melamine powder, some illegal businessmen directly use urea-formaldehyde molded powder as raw material to produce in order to pursue profits; Some use urea-formaldehyde molding powder as raw material, and then coat the outer surface of the tableware with a layer of melamine powder. Tableware made of urea-formaldehyde is harmful to human health. When consumers buy, they must first go to regular stores and supermarkets to buy, do not be cheap, buy on the ground; Secondly, the purchase depends on whether the appliance has obvious deformation, color difference, whether the surface is smooth, whether the bottom is uneven, whether the decal pattern is clear, whether there are wrinkles and bubbles, whether the colored tableware is faded with a white napkin to wipe back and forth.
How to use cutlery correctly
Due to the particularity of the molecular structure of melamine plastic, melamine tableware is not suitable for use in microwave ovens, and will crack if used. Melamine plastic tableware cleaning, to use a softer cloth, do not use a cloth such as cleaning cloth and cleaning powder to clean the surface of the tableware, because cleaning cloth, cleaning powder will wipe the surface of the tableware, making it more susceptible to contamination.