The number in the bottom triangle of the plastic cup is 5

- Aug 21, 2019-

The number in the bottom triangle of the plastic cup is 5. The number in the good environmental symbol represents one type of plastic product -- number 1: PET.

Heat resistance to 70℃ easy deformation, there are harmful to the human body out of the material.


Plastic no. 1 May release DEHP after 10 months of use.

Do not put in the sun in the car;

Do not put wine, oil or other substances


No. 2: HDPE (high density polyethylene), detergent, shampoo, bath milk, cooking oil, pesticides and other containers are mostly made by HDPE.

The container is mostly opaque and feels like wax.

Don't use them as water cups or storage containers for other things.

Do not recycle if not thoroughly cleaned.


No. 3: PVC (polyvinyl chloride), mainly used for making water pipes, raincoats, schoolbags, building materials, plastic film, plastic boxes and other utensils.

Excellent plasticity, cheap, so it is very common, can only heat 81℃.

It is easy to produce bad substances at high temperatures and is rarely used in food packaging.

Difficult to clean and easy to remain, do not recycle.

Don't buy drinks if they are loaded.


No. 4: LDPE (low density polyethylene), the most common plastic bags are made from LDPE.

High temperature produces harmful material from time to time, after toxicant enters human body with food, cause the disease such as congenital defect of breast cancer, newborn possibly.

Don't put plastic wrap in the microwave.


No. 5: PP (polypropylene), used to make buckets, trash cans, baskets, baskets, microwave food containers, etc. With a melting point of 167℃, it is the only plastic box that can be put into a microwave oven and reused after careful cleaning.

It should be noted that the box body of some microwave oven meal boxes is made with no. 5 PP, but the lid of the box is made with no. 1 PE. Since PE cannot withstand high temperature, it cannot be put into the microwave oven with the box body.


No. 6: PS (polystyrene), due to its low water absorption, is mainly used to make building materials, toys, stationery, rollers, as well as drink containers or disposable tableware in fast-food restaurants.


Do not put it in microwave oven to avoid release of chemicals due to high temperature.

Loaded with acids (such as orange juice), alkaline substances, will decompose carcinogens.

Avoid packing piping hot food in fast food containers.

Don't cook instant noodles in a microwave.


7th: others.

Common kettle, space cup, milk bottle.

Department stores often use these as freebies.

It is easy to release the toxic substance bisphenol A, which is harmful to human body.

Do not use heat, do not directly in the sun.