What are disposable paper cups made of?

1 poor-quality paper cups are made of recycled polyethylene, which will produce cracking changes during reprocessing, generating many harmful compounds that are more likely to migrate into the water during use. South China Agricultural University, School of Food, an expert in food packaging materials, Professor Zhang Qinfa has pointed out that the paper cups in the production in order to achieve the effect of water insulation, will be coated with a layer of polyethylene waterproof film on the inner wall. Polyethylene is the safest chemical in food processing. However, if the material used is not good or the processing technology is not up to standard, the polyethylene may oxidize to carbonyl compounds when it is hot-melted or coated onto the paper cups. Carbonyl compounds are not volatile at room temperature, but may be volatilized when hot water is poured into paper cups, so people may smell a strange odor. Analyzing from the general theory, long-term intake of such organic compounds must be harmful to human body.

2 main classifications

Domestic disposable paper cups can be divided into three kinds according to their uses, ? Cold drink cups, hot drink cups and ice cream cups. hot drink cups and ice cream cups. And according to the coating of the paper cups can also be divided into three kinds: wax coated cups, straight wall double-walled cups and polyethylene coated cups.

Waxed cups are the kind of paper cups described in the rumor mill, coated with a layer of wax used to insulate the water, regular manufacturers will use food-grade paraffin wax, accidentally drinking in the human body will not cause harm.

If you want to fill a hot drink, you need to add a layer of emulsion, straight wall double-wall cups with this coating, and because of the double-wall cups insulated, so commonly used to do hot drinks cups and ice cream cups.

Polyethylene coated cups are covered with a thin layer of polyethylene in the cup wall, belonging to the new process, the advantage is that cold and hot drinks can cope with ease, and the surface is smoother, the polyethylene itself is non-toxic and tasteless, but a long time under the heat of the situation, if the choice of material is not good or the processing process is not adequate, may be oxidized to carbonyl compounds. Carbonyl compounds are not volatile at room temperature, but when the paper cups are poured into hot water, they may be volatile, so people sometimes smell the paper cups have a strange odor is the reason. Analyzing from the general theory, long-term intake of this organic compound must be harmful to human body. [1]

3Usage specifications

Specifications normally used

Capacity Specifications (mm)

Ounces ml Upper mouth x lower mouth x height

2 ounces 60 ml 50 x 35 x 50

3A ounces 80 ml 55 x 40 x 57

3B ounces 80 ml 58 x 40 x 60

3C oz 80 ml 55×38×58

3D oz 80 ml 58×38×55

Turn Left|Turn Right

4 oz 110 ml 68×49×58

5A oz 200 ml 88×73×52

5B oz 160 ml 66×47 ×x 74

5.5 oz 160 ml 68 x 49 x 68

6.5 oz 180 ml 70 x 49 x 78

7 oz 200 ml 73 x 51 x 81

9 oz 250 ml 75 x 53 x 90

9.5 oz 270 ml 77 x 53 x 95

10 oz 280 ml 90×72×62

10.5 oz 300 ml 90×72×70

12A oz 340 ml 82×52×108

12B oz 460 ml 92×68×98

13A oz 360 ml 95×58×100

13B oz 360 ml 95×58×95

14 oz 360 ml 84×60×117

8(Euro) oz 270 ml 81×51×94

14B oz 400 ml 88×60×110