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Avoid Reusing Mineral Water Bottles
pine Webmaster of Pineapple
2008/09/21 13:52
508 topics published
A 12-year-old girl in Dubai developed cancer after using the same mineral water bottle for 16 consecutive months.

Most plastic bottles contain a material called polyethylene terephthalate, or PET for short. PET is a polymer produced by the combination of terephthalic acid and ethylene glycol. PET plastic is lightweight, highly transparent, impact-resistant, and shatterproof. It also prevents carbon dioxide from escaping, keeping sodas fizzy. Therefore, PET plastic is suitable for packaging, especially for water and beverages. Some scholars believe that PET contains a potential carcinogen called diethylhydroxylamine, or DEHA for short. Using it once is safe, but repeated use due to frugality or convenience may pose a cancer risk.

Every plastic bottle has a number at the bottom (it is a triangle with an arrow, and there is a number inside the triangle). If the number is "05" or above, it can be reused. The higher the number, the safer it is. If the number is less than "05," such as "04" or below, or if there is no number at all, do not reuse or heat it.

* The bottom of a typical mineral water bottle is marked with a "1" (so don't leave it in a car under the sun!!)
* The bottom of a plastic heat-resistant bowl from a noodle stall is marked with a "5"
* The bottom of a typical heat-resistant plastic tea cup is marked with a "5"
* The bottom of a Nestle coffee creamer bottle is marked with a "2"
* The bottom of the yogurt bottle advertised by Lin Chi-ling is marked with a "2"

Plastic Material Codes:

1. Polyethylene Terephthalate (PET), commonly known as the "PET bottle."
2. High-Density Polyethylene (HDPE, PE)
3. Polyvinyl Chloride (PVC)
4. Low-Density Polyethylene (LDPE, PE)
5. Polypropylene (PP)
6. Polystyrene (PS), if it is expanded polystyrene, it is commonly known as "Styrofoam."
7. Others (OTHERS)

1. PET (Polyethylene Terephthalate)

PET was initially used for synthetic fibers, films, and tapes. It wasn't until 1976 that it was used for beverage bottles. Containers made from PET are commonly known as "PET bottles." PET bottles are extremely hard, tough, lightweight (only 1/9 to 1/15 the weight of glass bottles), convenient to carry and use, and require less energy to produce. They are also gas-tight, non-volatile, and resistant to acids and alkalis, making them excellent packaging for carbonated drinks. In recent years, PET bottles have become an important container for carbonated drinks, tea, juice, bottled water, alcohol, and soy sauce. Additionally, PET bottles are widely used for packaging detergents, shampoos, cooking oils, condiments, sweets, medicines, cosmetics, and alcoholic beverages.3. PVC (Polyvinyl Chloride)

The invention of PVC material dates back quite early and has been widely applied in industrial products. PVC shares the advantages of other plastic materials and excels in processing and plasticity. Due to its low cost, it is commonly used, mostly in non-food applications such as water pipes, raincoats, school bags, building materials, plastic films, and plastic boxes. In container applications, it is often used for filling vegetable oil, detergents, pastry boxes, and packaged drinking water. However, because PVC contains chlorine, there is a concern that VCM monomers may be released during the bottle manufacturing, filling, and recycling processes, posing potential health risks. With the rise of environmental awareness in recent years, manufacturers have gradually shifted to using other materials for filling containers.

4. PE (Polyethylene)

PE is the most widely used plastic in industrial and daily life applications, generally divided into high-density polyethylene (HDPE) and low-density polyethylene (LDPE). PE has excellent resistance to both acidic and alkaline substances. HDPE has a higher melting point and greater hardness than LDPE and is more resistant to corrosive liquids. Most plastic bags and various translucent or opaque plastic bottles seen on the market today are made of PE, such as detergents, shampoos, shower gels, cooking oils, pesticides, etc., most of which are packaged in HDPE bottles. LDPE is ubiquitous in modern life, not because of containers, but because of the plastic bags you see everywhere. Most plastic bags and films are made of LDPE.

5. PP (Polypropylene)

PP and PE can be considered siblings, but PP has better physical and mechanical properties than PE. Therefore, bottle manufacturers often use PE for the bottle body, while the cap and handle are made of PP, which has greater hardness and strength. PP has a high melting point of 167°C, is heat-resistant, and its products can be sterilized with steam. PP is commonly used to make bottles for soy milk, rice milk, 100% pure juice, yogurt, juice drinks, dairy products (such as pudding), and larger containers like buckets, trash cans, laundry tubs, baskets, etc. In recent years, PP has also been widely used to make disposable tableware or cups (for fast-food restaurants to serve cold desserts, such as those used by the popular "Quickly" chain). PP containers are opaque or translucent and have the advantages of being acid and alkali resistant, chemical resistant, impact resistant, and high-temperature resistant (approximately 20°C to 120°C).

6. PS (Polystyrene)

PS has low water absorption and excellent dimensional stability, and can be processed by injection molding, compression molding, extrusion, and thermoforming. Generally, it is divided into two categories based on whether it has undergone a "foaming" process: foamed and non-foamed. Non-foamed PS is mainly used in building materials, toys, stationery, etc., and is also commonly used to make containers for fermented dairy products (such as Yakult, Jianjianmei, and other dairy or lactic acid products). In recent years, it has also been widely used to make disposable tableware.Foamed PS (commonly known as Styrofoam) is expanded 20 to 100 times using a foaming agent during the manufacturing process. It is used as cushioning packaging material for household appliances or information products, or as insulated containers such as ice cream boxes and fish boxes, generally referred to as EPS (Expanded Polystyrene). It is also used to make disposable tableware. This type of Styrofoam is usually first made into flat sheets, called PSP (Expanded Polystyrene Paper), which are then formed into various containers. There are also food-grade EPS foam products molded into shapes, such as coffee cups and grass jelly cups.

Source: http://www. foodqs. com/ news/ alibaba/ info. asp? id=1411302& zt=zx
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