Classification and identification of plastic cup materials

Classification and identification of plastic cup materials

Classification and identification of plastic cups, plastic cups are a common kind of cups, and disposable plastic cups are widely used. Many people worry that plastic materials are harmful to our health. Here, we will share the classification and identification of plastic cups.

Material classification and identification of plastic cups 1 1. What is the plastic cup made of?

When we usually use plastic cups, I don't know if you have noticed the recycling sign at the bottom of plastic cups;

These seven signs are the bottom signs of plastic cups used in our lives; The difference is that each plastic is different.

1 PET, used for mineral water bottles, coke bottles, etc.

No.2 HDPE is used for products such as shower gel and toilet cleaner.

No.3 PVC, making raincoats, combs and other products.

No.4 LDPE is used as film products such as plastic wrap.

No.5 PP: water cups, microwave lunch boxes, etc.

No.6 PS: making instant noodle boxes, fast food boxes, etc.

No.7 PC/ other categories: kettles, cups, milk bottles, etc.

How do we choose plastic cups?

All the materials of plastic cups are introduced above. Let's talk in detail about the most used water cup materials in our daily life.

Common plastics in daily drinking cups are PC, PP and Tritan.

PC and PP are no problem with boiling water.

However, PC is controversial, and many bloggers are promoting that PC will release bisphenol A, which is seriously harmful to health.

The process of making cups is actually not complicated, and many small workshops are copying. In the production process, the product will release bisphenol A when it meets hot water above 80℃.

The' water cup' made by strict implementation of the technology will not have this problem, so when choosing a PC water cup, find the brand of the water cup, and don't be greedy and cheap, and finally hurt yourself. Diller Di Lebel is very strict in the production process.

PP and Tritan are the main plastics for making baby bottles.

Tritan is a baby bottle material designated by the United States at present, which is very safe and will not precipitate harmful substances.

PP plastic is dark gold, which is the most commonly used bottle body material in China. It can be boiled at high temperature to kill viruses, and it is very resistant to high temperature.

So how do you choose the material of the cup?

Plastic water cups that meet the national regulations are safe in actual use. Only by comparing these three materials with each other can we determine the priority level.

Safety performance: Tritan > PP & gtPC；;

Affordable: PC > PP & gtTritan

High temperature resistance: PP > PC> tritan

Second, according to the adaptive temperature selection

Simple understanding is what we usually use to hold drinks;

We just need to ask ourselves one question: "Did I bring boiled water?"

Installation: choose PP or PC;

Do not install: choose PC or Tritan；;

Above the plastic cup, heat resistance has always been the premise of choice.

Third, choose according to the purpose.

For the lover to go out shopping as a companion cup, choose a small, exquisite and waterproof one;

Frequent business trips and long-distance trips, choose large-capacity wear-resistant water cups;

For daily use in the office, choose a cup with a larger mouth;

Choose different parameters for different purposes, and be accurate and responsible for your long-term use of water cups.

Fourth, according to the capacity selection.

Everyone drinks different amounts of water. Healthy boys consume 1300ml of water every day, while girls consume 1 100ml of water every day.

A bottle of boxed pure milk is 250ml, so you have an idea of how much milk you can hold.

The following is a general version of the capacity selection method.

350ml-550ml is suitable for babies and short trips.

550ml- 1300ml for home use and sports.

1300ml-5000ml long-distance travel and family picnic

Five, according to the design choice

The design and shape of cups are different, so it is very necessary to choose a cup suitable for your own use.

Although some plastic cups are particularly beautiful, many designs are invalid. Try to choose a cup that meets your needs.

Girls choose cups with straws, and it will be better not to stick lipstick.

Boys often travel or exercise, and choose to drink straight, so they can gulp water.

And when choosing, we should also consider portability; See if the plastic cups have hooks or lanyards. If there is no matching one, it is recommended to buy one with a hook or a lanyard, otherwise it will be particularly troublesome to carry and can only hold the cup body.

The material classification and identification of plastic cups are 2 1, and the triangle symbol is the symbol of plastic recycling. There are 1-7 numbers in the triangle, and each number represents a different plastic material.

2. The number 1. The chemical name of PET is polyethylene terephthalate. Most of our common mineral water bottles and carbonated beverage bottles are made of this material. Generally, after 70℃, harmful substances are easy to dissolve.

3, the number 2. Represents HDPE, that is, high-density polyethylene, which is often used in cleaning products, bath products, white medicine bottles and so on.

4, the number 3. PVC stands for PVC and is rarely used in food packaging at present.

5, the number 4. LDPE stands for LDPE, which is often used in plastic wrap and plastic film. This material will produce toxic substances when exposed to high temperature.

6. The number 5. Polypropylene stands for PP and is often used in microwave lunch boxes. The plastic with this logo is the only plastic that can be put into the microwave oven and reused after cleaning.

7. The number 6. PS stands for PS polystyrene, which is often used in instant noodle boxes and fast food boxes in bowls. Containers made of this material will release toxic substances when exposed to high temperature and acid and alkali substances, so they can't be heated in the microwave oven, and they can't contain acidic or other alkaline substances such as orange juice. Avoid packing hot food in fast food boxes.

8. The number 7. Stands for PC and is often used to make baby bottles, kettles, space bottles and so on. This material is easy to release the toxic substance bisphenol A at high temperature, which is harmful to human body. So when using this kind of water cup, don't heat it, don't expose it to the sun, especially when using PC baby bottle, don't use boiling water, it is best to change it once every three months.

Classification and identification of plastic cup materials 3 How to classify plastic cup materials?

1, plastic cups are classified by number.

2.No. 1 PET- polyethylene terephthalate. Common mineral water bottles, carbonated beverage bottles, etc. Heat resistance to 70℃ is easy to deform, and substances harmful to human body are melted out.

No.3 and no.2 HDPE high density polyethylene. Common white medicine bottles, cleaning products, bath products. Don't use it as a cup, or as a storage container for other items. If the cleaning is not thorough, don't recycle it.

No.4 and no.3 PVC- PVC Common raincoats, building materials, plastic films, plastic boxes, etc. Excellent plasticity and low price, so it is widely used, and can only resist heat of 865438 0℃. It is easy to produce harmful substances at high temperature and is rarely used in food packaging.

No.5 and no.4 PE- PE Common cling film, plastic film, etc. Harmful substances will be produced at high temperature, and toxic substances may cause diseases such as breast cancer and birth defects of newborns after entering the human body with food. Don't put plastic wrap in the microwave.

6,5 polypropylene. Common soybean milk bottles, sour milk bottles, fruit juice bottles, microwave lunch boxes. With a melting point as high as 167℃, it is the only plastic box that can be put into a microwave oven and can be reused after careful cleaning.

7,6 polystyrene. Common instant noodle boxes and fast food boxes in bowls. Can't put it in the microwave oven, so as not to release chemicals when the temperature is too high.

8, 7 personal computers-other categories. Common kettles, space cups and milk bottles. Department stores often use cups made of this material as gifts. It is easy to release bisphenol A, a toxic substance harmful to human body. Don't heat it when using it, and don't directly bask in the sun.