What do the codes 1–7 on plastic packaging mean? Learn about healthy types of plastic, harmful ones, and tips for safe use.
Resin identification codes 1–7: quick comparison
| Code | Common name | What it identifies | First thing to check |
|---|---|---|---|
| 1 | PET / PETE | Polyethylene terephthalate | Label and local collection rules |
| 2 | HDPE | High-density polyethylene | Intended use and maker instructions |
| 3 | PVC / V | Polyvinyl chloride | Product type and contact conditions |
| 4 | LDPE | Low-density polyethylene | Label and reuse instructions |
| 5 | PP | Polypropylene | Heat and food-contact instructions |
| 6 | PS | Polystyrene | Reuse and temperature instructions |
| 7 | Other | Resins outside codes 1–6 or multilayer materials | Material name and compliance statement |
Why Are Plastic Numbers Important?
Plastic is an indispensable part of our lives: water bottles, food containers, children's toys... But not all of them are equally safe.
under the plasticsCodes 1–7 in the triangle, shows which plastic is safe and which poses a health risk. Knowing these codes, especiallyfood contact productsIt is very critical for.
Healthy Plastic Types
Number 2: HDPE (High Density Polyethylene)
- Area of use:Milk bottles, detergent containers, toys.
- Advantage:It does not contaminate harmful chemicals into food.
- In terms of health:By expertssafest plasticis considered as.
👉 Suggestion:If possible, choose HDPE coded products in food and beverages.
Number 5: PP (Polypropylene)
- Area of use:Yogurt cups, straws, baby products.
- Advantage:Heat resistant, oil and moisture proof.
- In terms of health:It does not emit harmful compounds even when heated.
👉 Suggestion:It is the ideal type of plastic for storing hot foods.
Risky Plastic Types
Number 1: PET (Polyethylene Terephthalate)
- Area of use:Water bottles, soda bottles.
- Advantage:Lightweight and transparent, safe for disposable use.
- In terms of health:It may produce bacteria when used again.
👉 Suggestion:Treat PET bottles for single use only.
Number 3: PVC (Polyvinyl Chloride)
- Area of use:Toys, food containers, pipes.
- Disadvantage:It can leach the chemicals it contains into food and water.
- In terms of health:It may contain carcinogenic substances.
👉 Warning:Stay away from PVC packaged foods.
Number 6: PS (Polystyrene)
- Area of use:Disposable cups, plates, egg cartons.
- Disadvantage:It is cheap and light, but can emit toxic gas at high temperatures.
- In terms of health:Long-term use carries the risk of cancer.
👉 Warning:Try not to use Styrofoam plates and cups.
Number 7: Others (BPA, PC and Mixed Plastic)
- Area of use:Sports bottles, feeding bottles, storage containers.
- Disadvantage:It may contain BPA and may disrupt hormone balance.
- In terms of health:It poses a great risk, especially for babies.
👉 Suggestion:Choose products labeled “BPA free”.
Things to Consider When Using Plastic
- Do not reuse disposable PET bottles.
- Stay away from products containing PVC, PS and BPA.
- Do not use plastic containers in the microwave.
- Turn to alternatives such as glass, stainless steel and bamboo.
- For children's products, be sure to choose BPA-free and PP (5) coded products.
Choosing the Right Plastic for the Environment and Health
Choosing the right plastic is important not only for health but also for the environment.HDPE (2)AndPP (5)Coded plastics are both safer and more convenient for recycling.
PVC (3) and number 7 (BPA-containing) plastics are not suitable for recycling and can remain undissolved in nature for hundreds of years.
👉 By making more conscious choices, you can both protect your health and contribute to nature.
Conclusion
Plastic numbers say a lot about the safety of the products we use in our lives.
- Safe preferences:2 (HDPE) and 5 (PP).
- Things to consider:1 (PET – disposable).
- Things to definitely stay away from:3 (PVC), 6 (PS) and 7 (BPA content).
With the right information, you can make much healthier and safer choices in daily life.
Frequently Asked Questions (FAQ)
1. What do plastic numbers mean for health?Plastic numbers indicate the food contact safety of plastic and the risks involved.
2. Which plastic should be preferred for children's products?The safest plastic for baby bottles and toysPP (5)is the coded one.
3. Is it harmful to wash and reuse PET bottles?Yes. There is a risk of bacterial growth and chemical leakage when reused.
4. Why is BPA considered harmful?BPA can disrupt the hormonal system and cause long-term health problems.
5. What alternatives can be used instead of plastic?Glass bottles, stainless steel flasks and bamboo storage containers are the safest alternatives.
Related guides
Continue reading: Plastic Recycling Codes | Meanings and User Guide.
Continue reading: contract injection molding with İdeal Plastik: High Quality and Affordable Price.
Sources
ASTM D7611 resin identification code — The code identifies the resin family; it is not a safety or recyclability guarantee.
European Commission guidance on food-contact materials — Suitability depends on the finished product, intended use and applicable requirements.