Plastic is an incredibly versatile material that has become ubiquitous in our modern world. It is used in everything from packaging and consumer goods to construction and transportation. However, the widespread use of plastic has also led to a significant environmental problem: plastic waste. To mitigate this problem, recycling has become an essential part of managing plastic waste. In this article, we will discuss plastic number 7, also known as “other” plastic, and the various recycling options for this type of plastic.
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What is number 7 plastic?
The recycling code for number 7 plastic is “other,” and it encompasses a wide range of plastic materials that do not fit into any of the other six categories. These materials are often a combination of different plastic types or are made from unique plastic formulations that make them difficult to recycle. The presence of different materials in these plastics can make them challenging to process and recycle, leading to a lower demand for these types of plastics in the recycling market.
Number 7 recycling symbol
The recycling symbol for number 7 plastic is the same as the other recycling codes, which is a triangle made up of three arrows. However, the number 7 is often found within the triangle, indicating that the plastic is a type 7 plastic.
Recycling #7 plastic
Recycling number 7 plastic can be a challenge, as it requires specialized processing equipment and technologies. However, many facilities are now equipped to recycle number 7 plastic, and there are several recycling options available.
Mechanical recycling
One of the most common ways to recycle number 7 plastic is through mechanical recycling. This process involves shredding the plastic into small pieces, washing and cleaning the pieces, and then melting them down to create new plastic products. Mechanical recycling is the most cost-effective and widely used method of recycling plastic, but it is not always possible with number 7 plastics due to their unique composition.
Chemical recycling
Chemical recycling is a newer method of recycling plastic that uses chemical processes to break down the plastic into its component parts, such as monomers or polymers. These components can then be used to create new plastic products or other chemicals. Chemical recycling is still in its early stages of development, but it shows promise as a way to recycle difficult-to-process plastics like number 7.
Examples of 7 plastic
Within the category of number 7 plastic, there are several subcategories of plastics, each with their own unique properties and characteristics. Some common types of number 7 plastic include:
Acrylic
Acrylic, also known as polymethyl methacrylate (PMMA), is a type of plastic that is often used in applications where transparency is essential, such as windows, displays, and lighting. It is also used in aquariums and signs. Acrylic is not usually recycled, but some facilities can process it if it is free of other contaminants.
Polycarbonate
Polycarbonate is a type of plastic that is known for its strength, durability, and transparency. It is used in a wide range of applications, including eyeglasses, CDs and DVDs, and electronics. Polycarbonate is challenging to recycle due to its composition, but some facilities can process it. PC (Polycarbonate) is a valuable polymer known for resistance to the elements and extreme heat while maintaining it’s clarity. PC is used in displays, fish tanks, bullet proof glass, windows and utility meter housing. Even contaminated PC can usually be recycled and has good value. There are ready end markets for recycled PC and it can be compounded with other alloys like ABS to create housing for electronics and medical devices.
Polylactic (PLA)
Polylactic acid (PLA) is a type of plastic made from renewable resources such as cornstarch or sugarcane. It is often used in biodegradable packaging and other disposable products. PLA can be recycled, but it requires specialized equipment and processes.
Fibers
Plastic fibers, such as those used in carpets and textiles, are often made from a combination of different types of plastic. Recycling these fibers can be difficult due to their unique composition.
Nylon
Nylon is a type of plastic that is known for its strength, durability, and resistance to abrasion.
