There are many types of plastic bottles. Each bottle has its own symbol(number) on bottom. The purpose of the symbol is to identity each type material. Here introduce them from 1 to 7.

Commonly used in water bottles, carbonated drinks, cosmetic bottles, Juice bottles, etc. Which produced by the PET stretch blow molding machine. The ordinary PET Bottle only can resist the temperature to 60 degree. More than 70 degree, there is substance which is harmful to human body. If use it more than 10months, it may release carcinogens DEHP.

Commonly used in white medicine bottle, cleaning product, bath product. Do not use it as water cup or storage container. Do not recycle.

Common used in raincoats, building materials, plastic films, plastic boxes, etc. It has excellent plasticity and low price. It is widely used and can only be heat-resistant to 81 degrees. It is easy to produce bad substances at high temperature, and rarely used in food packaging. Difficult to wash, easy residue. Do not recycle. Do not buy packaged drinks.

Commonly used in plastic wrap, plastic film, etc. Harmful substances are produced at high temperature. After the toxic substances enter the human body with food, it may cause diseases such as breast cancer and birth defects of newborns. Do not put plastic wrap in the microwave.

Commonly used in soy milk bottles, yogurt bottles, juice drink bottles, microwave lunch boxes. The melting point is as high as 167 degrees, and it is the only plastic box that can be put in the microwave.

Used in Toys, hard packing, refrigerator trays, cosmetic bags, vending cups.

Winiber, PET stretch blow molding machine manufacturer. We can provide whole line for bottle production. If you have any requirement on PET Stretch blow molding machine or PET preform Mold, welcome to inquiry from us!