Should you drink the first glass of water in a disposable paper cup?

Should you drink the first glass of water in a disposable paper cup?

To determine if you should drink your first glass of water, you first need to determine what type of paper cup you are holding.According to GB/T 27590, paper cup can be divided into cold drink cup, hot drink cup and ice cream cup according to the use, according to the composition of raw materials can be divided into waxing cup and film cup.

The surface of the waxed cup is coated with paraffin, and the membrane cup is coated with polyethylene (PE).According to GB 7189, paraffin wax used for paper cup coating is of food grade and has a melting point between 52 and 68℃. It is not heat resistant and will melt when it meets hot water, which is not suitable for holding hot drinks.At the same time, it is at low temperature (especially below 0℃) and easy to become hard and brittle, easy to produce cracking, friction resistance, easy to transfer to drinks or food, so the waxed cup is generally only suitable for cold drinks.The film cup is different, because polyethylene heat resistance is strong, below 100℃ will not melt, low temperature will not crack, so it can be used to hold hot drinks, cold drinks, ice cream (can be stored in the refrigerator).

As can be seen from the above, the waxed cup has been basically eliminated by the market because of its narrow application scope, and is now very rare.So how to tell whether a paper cup is waxed or coated?

Very simple, as can be seen from the information on the outer packing.It can be seen from the main raw materials of the outer packaging and the text on the left that the paper cup is PE coated cup.

Now back to the subject’s question, should I drink the first glass of water in a disposable paper cup?

If you are using a waxed cup with hot water (above 50 ° C), don’t bother, because it doesn’t matter how many times you use the cup, the paraffin on the surface of the cup may be melted by the hot water, making it possible to drink into your mouth.Although food grade paraffin eat the belly is not much harm, but the point is that the film of wax melting exposed leads to production of paper cup and soaked by water, paper may precipitate the harmful ingredients, such as heavy metals, fluorescent material, printing ink, etc., especially if the manufacturers use inferior quality raw materials of paper.

If the connection is hot water (50℃ above), with the film cup, which should be specifically distinguished.I forgot to introduce that the film cup can be divided into a single film cup and a double film cup, the single film cup is just coated on the inside of the paper cup, the double film cup is coated on the inside and outside of the paper cup, with two kinds of paper cup water but there is a difference.

Many students may be confused, whether it is a single layer or a double layer, they are not coated on the inside, used to connect hot water effect is not the same?That would be wrong.

Everybody think, you buy back the paper cup is not a set of one?If it is a single-layer coated cup, is the outer surface of the upper cup in contact with the inner side of the cup below it?In this way, the ink printed on the outside may be attached to the inside of another paper cup.In fact, to solve this problem, GB/T 27590 has provisions, namely, “the mouth of the cup should not be printed within 15 mm from the cup body, and the bottom of the cup should not be printed within 10 mm from the cup body”.In line with the provisions of “the mouth of the cup should not be printed within 15 mm from the cup body, and the bottom of the cup should not be printed within 10 mm from the cup body”, the purpose of the cup mouth can not be printed is to avoid direct contact between the consumer’s mouth and the printing ink. The purpose of the cup bottom can not be printed is to avoid the bottom of the cup rubbing against the inside of another cup when the cup is set up one by one.