What does the triangle symbol usually print on the bottom of a plastic bottle mean?

Underneath the plastic bottles, boxes or items there is always a triangular symbol made up of 3 arrows and a number in it (from 1 to 7). It is not only a recycling symbol as many people often think, but it is a way for users to know exactly what kind of plastic it is, its nature and characteristics, and how to use it and even lice are thrown away properly.

The following infographic will show 7 symbols corresponding to 7 common types of plastic, including PE, PVC, PET, PS, .

The content arranged in the first paragraph is a general introduction to the type of plastic, then below are the characteristics and comparison between them according to the melting point, hardness, transparency, scratch resistance, .

Picture 1 of What does the triangle symbol usually print on the bottom of a plastic bottle mean?
When plastic bottles and jars are needed, the characteristics and capabilities of each type of plastic are an important factor.

Picture 2 of What does the triangle symbol usually print on the bottom of a plastic bottle mean?
There are common types of plastic as follows: PE, PVC, PS, HDPE .

Picture 3 of What does the triangle symbol usually print on the bottom of a plastic bottle mean?
Depending on the type of plastic will be used for different purposes.

Picture 4 of What does the triangle symbol usually print on the bottom of a plastic bottle mean?
Each type of plastic has a different degree of heat resistance, impact resistance, hardness .

Picture 5 of What does the triangle symbol usually print on the bottom of a plastic bottle mean?
The figure in the triangle arrow indicates the type of plastic.

Update 18 December 2018