lojmikak
Dołączył: 30 Sie 2010
Posty: 1597
Przeczytał: 0 tematów
Ostrzeżeń: 0/5
Skąd: olvovw
|
 Wysłany: Nie 5:15, 08 Maj 2011 Temat postu: mbt shoes sale How to identify toxic plastic food |
 |
|
How to identify toxic plastic food packaging
Products abound. We all know and serve food to the plastic packaging should be non-toxic but sometimes people do not pay attention to this issue. He took a plastic bag to conveniently used to hold food, the body does not know that this is harmful. Because some of the plastic. If PVC is toxic. Although non-toxic PVC resin. But in the process of manufacturing plastics plasticized added brake and dibutyl phthalate Dioctyl phthalate so toxic; Add stabilizer mainly lead stearate is also toxic. Coupled with easily lead salt precipitation, there will be set once the store into the role of the human body. A long time, people poisoned, so use plastic food packaging and serve food to use special bags, boxes, must not be used indiscriminately. Dong material the use of child items in the tiny package, we should note the following points. 1 PVC products with ethanol, ether and other solvents precipitate when exposed to lead salt, so in full bloom with this soft plastic food is unfit; 2. If you use PVC products in full bloom oily foods such as fritters, fried cake, fried fish. Snacks and the like would lead to the spread of plastic food hit: 3 PVC products with temperature higher than 105 ~ c will be dissolved when the toxic substances,[link widoczny dla zalogowanych], such as the Tianjin College of Finance Liu North Star - a long-term results at 80 ℃ HCI will slowly release more gas using a gas toxic to a human body other Bakelite (Bakelite) containing free phenol and formaldehyde is toxic to humans, it should be for food products, electrical appliances, surgery and food packaging. Power E (feces formaldehyde plastic), although non-toxic, odorless at room temperature, but in the 100 ~ C in boiling water bubbles or for holding vinegar, there will be precipitation of harmful formaldehyde. Should not be used for food packaging or tools. Other products such as waste plastic recycling is difficult to guarantee because of its complex composition with no toxicity is not the official use as food packaging. Everyday plastics used for food packaging is not added as plasticizer and antioxidant species, such as making ethylene, polypropylene, polystyrene,[link widoczny dla zalogowanych], nylon, etc., they are non-toxic. Such as the commonly used food bag is made of polyethylene plastic, and another example, bottles, cups, sugar tanks, tray, spoon, lunch boxes, are also using non-toxic plastic. Dong material products in common in their home I do not how toxic Lu? Identification of many methods, such as the appearance of the method, proportion method, solvent, boiling water immersion, combustion and other relatively simple, accurate and feasible method is combustion method, are presented below : The samples were cut out of a small bar clamp grip, in light of the kerosene lamp (such as no alcohol lamp lit candles can be replaced Ⅲ) watch their ease of combustion, the S2. - Away from the situation after the fire,[link widoczny dla zalogowanych], the color of flame and smoke, burning odor and other phenomena and mechanized units can be determined from what kind of plastic. Ping-l ethylene le. 1 -: not flammable, away from the fire Jimie, flame and smoke green color for the bottom tip of yellow, white smoke when burned soften,[link widoczny dla zalogowanych], have brushed off after the phenomenon,[link widoczny dla zalogowanych], hydrochloric acid gas to stimulate taste. Ping ethylene le. 1 -: flammable, away from the fire continued to burn after the flame and smoke the blue end of the top yellow, melting constantly drip when burning, burning paraffin wax with a similar issue of taste. JIL ~ l Ping-styrene le. 1 -: flammable, away from the fire continued to burn after the flame and smoke Secheng orange, black smoke, it is obvious that the end of black carbon into the air, a characteristic smell of styrene gaze. ItS 1 -: flame from the fire then turns off, yellow flame and smoke, fuel expansion cracks will issue a burnt wood smell intoxicated with benzene. Dong storm I expected: flame from the fire after the Jimie, flame and smoke color yellow, light blue tip, fuel expands and cracks when issued pungent smell of urea and formaldehyde Dong nylon material: the slow burn from the fire off slowly after the flame was yellow, when burning constantly dripping and foaming melt, a burning smell similar to wool. ● China Packaging 20oo Volume 20 No. 5 63
相关的主题文章：
abercrombie günstig Plastic film for packaging th
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
Post został pochwalony 0 razy
|
|
