What are the requirements for cosmetic plastic bottles?

2021-11-08

Generally there are PET plastic, PP plastic, PETG plastic. Ordinary cosmetics and detergent packaging containers are mostly made of high-density polyethylene. In order to meet the packaging requirements of different products, the materials used for plastic bottles are becoming more abundant.

1. The PET material is an environmentally friendly material, polyethylene terephthalate, with high barrier properties, light weight, non-breaking characteristics, chemical resistance, strong transparency, and can be made into pearlescent, colored, magnetic white, Transparent, widely used in gel water. The bottle mouth is generally standard 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 for plastic bottle packaging at home and abroad in recent years. Highly transparent polypropylene container (PP plastic), with good transparency and gloss, is highly appreciated and very popular.

3. PETG is polyethylene terephthalate-1,4-cyclohexanedimethanol. PETG is used in all kinds of 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 weather resistance (yellowing) performance than PET.

Extended information:

How to identify the safety of plastic containers:

The bottoms of ordinary mineral water bottles are mostly "1-PET" (also known as "1-PETE"); the bottoms of bottles containing shampoo, shower gel, laundry detergent and other products are marked with "2-HDPE". On the bottom of plastic water cups and baby bottles, the number "7" is written in a triangle with an arrow. At the same time, the reporter also discovered that there are still some plastic bottles on the market, without any signs on the bottom.

When PET heats up to 70°C and is easily deformed, substances harmful to the human body will dissolve out. At the same time, it should not be exposed to the sun in the car, and should not be filled with alcohol or oil. It can be filled with room temperature water in a short period of time, but it cannot be filled with high-temperature water, nor should it be filled with acid-alkaline beverages.

PP polypropylene can be used to make microwave lunch boxes, and it is also the only plastic box that can be placed in microwave ovens and can be reused. The plastic products marked with No. 6 are made of PS polystyrene, which will release chemicals when the temperature is too high, and cannot be used to install strong acids and strong alkaline substances. No. 7 OTHER means that it is made of other plastics. If such containers are damaged, they should be discontinued, because the tiny pits on their surface can easily hide bacteria.

When using plastic containers, be sure to read the numbers marked in the triangle at the bottom of the bottle. Only when you understand the properties of the material can you use it in a suitable environment. The triangle formed by three arrows is usually printed on the bottom of the plastic bottle, and there is a number in it, ranging from 1 to 7.

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