The terms “plastic #1” and “plastic #2” refer to a plastic container's resin identification code. Put simply, this code refers to what type of polymer comprises a container (and not all plastics are created equal). Inside the symbol will be a number, 1-7, which is the resin code.
Top 10 Plastic Pros & Cons – Summary List
| Plastic Pros | Plastic Cons |
|---|
| Processes are optimized | Soil pollution |
| Durability | Air pollution |
| Less fragile | Land pollution |
| Plastic is hygienic | Visual pollution |
High-density polyethylene, or HDPE (No. 2); low-density polyethylene, or LDPE (No. 4); and polypropylene (No. 5) are also used for drinking containers, though less frequently.
Reusing containers is one of the most effective and inexpensive ways to reduce the environmental impact of packaging. Some plastic containers can be made durable enough to be refilled and reused about 25 times before becoming too damaged for reuse.
Health advocates advise against reusing bottles made from plastic #1 (polyethylene terephthalate, also known as PET or PETE), including most disposable water, soda, and juice bottles. 3 Such bottles may be safe for one-time use but reuse should be avoided.
Polypropylene is generally considered safe for use, but you should still be wary of using plastics more often than you have to. The chemicals found in plastic products are proven to contribute to some cancers. While it's nearly impossible to avoid all plastic products, you can use as little plastic as possible.
3 Answers. This is the date the item was manufactured. The upper dial gives the year, the middle one, the month.
One of the simplest ways to carry out a flame test is by cutting a sample from the plastic and igniting it in a fume cupboard. The colour of flame, scent and characteristics of burning can give an indication of the type of plastic: Polyethylene (PE) - Drips, smells like candlewax.
Here's what each plastic recycling symbol means, along with examples it's found in and how to recycle it.
- Plastic Recycling Symbol #1: PET or PETE.
- Plastic Recycling Symbol #2: HDPE.
- Plastic Recycling Symbol #3: PVC or V.
- Plastic Recycling Symbol #4: LDPE.
- Plastic Recycling Symbols #5: PP.
The Basics On 7 Common Types of Plastic
- 1) Polyethylene Terephthalate (PET or PETE)
- 2) High-Density Polyethylene (HDPE)
- 3) Polyvinyl Chloride (PVC or Vinyl)
- 4) Low-Density Polyethylene (LDPE)
- 5) Polypropylene (PP)
- 6) Polystyrene (PS or Styrofoam)
- 7) Other.
The symbol has a numeric number (from 1 – 7) encased by three chasing arrows shaped like a triangle. If you see 1, 2, 4, 5, or 6, you can comfortably assume the bottle or jar is BPA free. If it is 3, or PVC, it likely contains BPA.
What Those Little Numbers Mean
| Recycling No. | Abbreviation | Polymer Name |
|---|
| 4 | LDPE | Low density polyethylene |
| 5 | PP | Polypropylene |
| 6 | PS | Polystyrene |
| 7 | Other | Other plastics, including acrylic, acrylonitrile butadiene styrene, fiberglass, nylon, polycarbonate, and polylactic acid. |
To know if a plastic container or plastic wrap is microwave safe, you should look on the packaging material for a “Microwave Safe†label. Plastic products with an imprinted microwave symbol can be used in the microwave. This symbol is mostly used on reusable plastic storage containers.
In terms of chemical leaching, plastic containers with the recycling code 2 (high-density polyethylene, HDPE), 4 (low-density polyethylene, LDPE) or 5 (polypropylene, PP) are safest for reuse, says Daniel Schmitt, associate professor of plastics engineering at the University of Massachusetts Lowell, U.S. These
Explanation: Animals also mistake single use plastic as food and can choke or become fatally ill from toxins — such as BPA, flame retardants, and PVC — as well as from other chemicals it soaks up. If they're not eaten, these plastic products can ensnare wildlife and end their lives by immobilizing or strangling them.
#7 plastics are not for reuse, unless they have the PLA compostable coding. When possible it is best to avoid #7 plastics, especially for children's food. Plastics with the recycling labels #1, #2 and #4 on the bottom are safer choices and do not contain BPA.
Plastic number 1 refers to polyethylene terephthalate which is one of the most generally used thermoplastic polymer resin. Well, plastic 1 is most frequently used in water and beverages bottles, food jars and containers, salad dressing and oil bottles, clothes fiber, mouthwash bottles.
The difference in the recyclability of plastic types can be down to how they are made; thermoset plastics contain polymers that form irreversible chemical bonds and cannot be recycled, whereas thermoplastics can be re-melted and re-molded.
The plastic number is also sometimes called the silver number, a name given to it by Midhat J. Gazalé and subsequently used by Martin Gardner, but that name is more commonly used for the silver ratio 1 + √2, one of the ratios from the family of metallic means first described by Vera W. de Spinadel in 1998.
The easiest way to check is to look for the Resin Identification Code—i.e., recycling number—which identifies the type of plastic material. The code consists of a triangle of arrows surrounding a number between 1 and 7. Generally, numbers 1 through 7 indicate food grade plastic.
7 types of harmful plastic
- Polyethylene terephthalate. Commonly known as PET, this type of plastic can be most commonly seen as being sold as water bottles and soda bottles.
- High-density polyethylene.
- Polyvinyl chloride.
- Low-density polyethylene.
- Polypropylene.
- Polystyrene.
- Other plastics.
