When you enter a fast food restaurant, you may see that the tableware used is melamine. Melamine tableware is durable and not fragile, and the cost is also cheaper than ceramic tableware, which saves the merchants cost. There are more and more merchants using melamine tableware, but there are many unqualified melamine tableware, which causes the melamine tableware to fail.
(1) Raw material ratio: If the melamine powder percentage is not enough, or the degree of ball milling of the raw material is not enough, the raw materials are rough, and the raw material is insufficiently added, the produced tableware structure is loose or has obvious defects, so that it is in daily life. Soy sauce, vinegar, etc. are easily infiltrated and are not easily removed. The book also pointed out: If the formula is not easy to cause the formaldehyde content to exceed the standard, the safety and health requirements are not met.
(2) Mold finish and exhaust control: In the press molding process of melamine tableware, in order to eliminate the small molecular substances such as formaldehyde and water generated during the cross-linking curing reaction of melamine-formaldehyde resin, there must be an exhaust process. If the exhaust is improper, it will not only affect the discharge of formaldehyde molecules, but also create pores on the surface of the tableware, which will cause the stains to deposit and affect the food hygiene of the tableware.
(3) Pressing temperature, pressure and curing time: If the pressure, temperature is not proper or the curing time is insufficient, it may contain more melamine and formaldehyde residues, which seriously affect the safety and quality of the tableware.
(4) Quality control of surface printing ink: Since the printing ink in the tableware can directly contact the food, it is important to select inks that meet the hygiene and safety standards.
It is recommended that fast food restaurants, or some retail stores, should pay attention to whether their products have passed the quality certification when purchasing melamine tableware, and they are responsible for their own buyers. The general public should also polish their eyes when purchasing products.
Post time: Nov-01-2019