Generally there are PET plastic, PP plastic, PETG plast […]
Generally there are PET plastic, PP plastic, PETG plastic. Ordinary cosmetics and washing products packaging containers are mostly made of high-density polyethylene. In order to meet the packaging requirements of different products, the materials used in plastic bottles have also become increasingly rich.
1. PET material is environmentally friendly material. It is polyethylene terephthalate. It has high barrier properties, light weight, non-breaking characteristics, chemical resistance, and strong transparency. Transparent, widely used in gel water. The mouth of the bottle is generally 16 #, 18 #, 22 #, 24 # caliber, which can be used with a pump head.
2. The development of pp transparent packaging bottles has been a hot spot in plastic bottle packaging at home and abroad in recent years. Highly transparent polypropylene container (PP plastic), has good transparency and gloss, strong appreciation, and is quite popular.
3. PETG is polyethylene terephthalate-1,4-cyclohexanedimethanol. PETG is used for various long-lasting daily necessities, such as cosmetic bottles, perfume bottles, pharmaceutical packaging containers, and so on. Compared with PET, PETG has higher transparency, better chemical resistance, better oil resistance, and better weather resistance (yellowing) than PET.
Safety methods for identifying plastic containers:
The bottom of ordinary mineral water bottles is mostly "1-PET" (also known as "1-PETE"); the bottom of bottles containing shampoo, shower gel, laundry detergent and other products are marked with "2-HDPE". On the bottom of the plastic water cup and bottle, the number "7" is written in the triangle with the arrow. At the same time, the reporter also found that there are still some plastic bottles on the market stalls without any logo on the bottom.
PETWhen PET is heat-resistant to 70 ° C and easily deformed, harmful substances to the human body will dissolve. At the same time, it cannot be exposed to the sun in the car. Do not load wine, oil and other substances. Can be filled with room temperature water in a short period of time, but can not be filled with high temperature water, it is not suitable for acid and alkaline drinks.
PP polypropylene can be used to make microwave lunch boxes. It is also the only plastic box that can be placed in a microwave oven and can be reused. The plastic products marked with No. 6 are made of PS polystyrene. Chemicals will be released when the temperature is too high. They cannot be used for strong acid and alkaline substances. No. 7 OTHER stands for other plastics. If these containers are damaged, they should be discontinued because of the fine pits on their surfaces, which easily hide bacteria.
When using a plastic container, be sure to read the numbers marked in the triangle on the bottom of the bottle. Only by knowing the material properties can it be used in a suitable environment. The triangle consisting of three arrows is usually printed on the bottom of the plastic bottle. There is a number in the range from 1 to 7.