The versatility and freedom of plastic to be used in a variety of applications have undoubtedly contributed to the rise of plastic in modern society. But do you know what plastic is and how it can meet your specific needs? In that case, plastic is a synthetic polymer, and polymer suppliers provide various types of plastic resins tailored to the requirements of different industries. With that in mind, let’s dive into the world of synthetic polymers and explore the different types of plastics. Let’s get started!
The Basics of Synthetic Polymers
First of all, polymers are large molecules composed of repeating structural units known as monomers. In general, polymer suppliers provide both natural and synthetic polymers. However, in this context, we are focusing on synthetic polymers, which are created through chemical processes by linking monomers into chain-like structures.
Furthermore, there is a profound connection between synthetic polymers and plastics; plastics are a category of materials derived from synthetic polymers. Different types of plastics are developed by utilizing specific combinations of monomers and polymerization processes. Each type of plastic exhibits unique characteristics and finds applications in various industries.
It’s essential to note that not all synthetic polymers are plastics; synthetic polymers encompass a broader range of materials beyond plastics, including fibers, resins, and elastomers.
Synthetic Polymers Properties:
- Easy to Mold
- Low Thermal Conductivity
- Longevity
- Versatility
- Durability
- Lightweight
- Tensile Strength
- Electrical and Thermal Insulation
- Corrosion and Chemical Resistance
- Transparency
- Flexibility
- Water Resistance
- Cost-Effective
- Recyclability
5+ Types of Plastic/Polymers You'll Find Nearly Everywhere
In 1988, the Society of the Plastics Industry introduced the Resin Identification Code (RIC) system which divided plastic resins into 7 different categories. The following are different grades and types of plastic that have their own unique properties. Have a look!
Rc- no
Plastic Type
Resin Identification Code
Applications
1
Polyethylene Terephthalate
PETE/PET
Microwave containers, soft drink bottles, condiments jars, clothes, housing materials, etc.
2
High-density Polyethylene
HDPE/PE-HD
Personal care product packaging, toys, buckets, chairs, benches, cleaning products, etc.
3
Polyvinyl Chloride
PVC/V
Credit cards, plumbing wires, blood bags, medical fluid bags, window frames, cables, etc.
4
Low-density Polyethylene
LDPE/PE-LD
Plastic wrap, bread bags, grocery bags, garbage bags, beverage glasses, etc.
5
Polypropylene
PP
Food & beverage packaging, Water bottles, plastic jars, battery cases, caps, etc.
6
Polystyrene
PS
CD/DVD cases, food trays, tumblers, disposable cutlery, medical equipment, insulation materials, etc.
7
Other Resin
OTHERS/O
Products that are not made from given 1 to 6 are considered as others.
Polyethylene Terephthalate (PET) - #1
With its meltable structure and ease of molding, polyethylene terephthalate is a thermoplastic material well-suited for rigid plastic packaging. PET/PETE can be recycled to revert to its original form and can also be transformed into
polyester fabrics. This widely used synthetic polymer, characterized by its linear structure, is primarily utilized in the production of beverage and water bottles, medical and food packaging, and textile fibers.
High-density Polyethylene (HDPE) - #2
A polymer known as high-density polyethylene (HDPE) is highly resistant to chemicals and exhibits remarkable durability and toughness. It finds common use in products such as shampoo bottles, syrup containers, and sauce bottles. HDPE is not only recyclable but also stronger than PET.
Polyvinyl Chloride (PVC) - #3
With its weathering and chemical resistance properties, polyvinyl chloride (PVC) is an exceptionally rigid and durable type of plastic resin, making it ideal for manufacturing building and construction materials. In addition to these advantages, PVC can also be disinfected, making it suitable for medical and surgical applications
Low-density Polyethylene (LDPE) - #4
Low-density polyethylene (LDPE) resin is softer, clearer, and more flexible than HDPE plastic resins. Despite these benefits, LDPE plastic resins are not necessarily recyclable. Their primary uses include serving as liners inside
beverage cartons, corrosion-resistant work surfaces, and a variety of other products.
Polypropylene (PP) - #5
Polypropylene, one of the most commonly used synthetic polymers in our daily lives, is known for its high chemical resistance and excellent thermal stability. It is well-suited for packaging purposes and the production of plastic films.
Polystyrene (PS) - #6
The monomer styrene is utilized in the production of polystyrene, a synthetic hydrocarbon polymer. Plastic forks, DVD cases, stationery, toys, and various packaging materials are primarily manufactured from this rigid, transparent,
and brittle material. Polystyrene exhibits a styrofoam-like texture and excellent thermal insulation properties.
Other Plastic Resins (O) - #7
Plastics that do not fall into the categories numbered 1 through 6 are classified as ‘other plastic resins,’ designated by code number 7. This category includes polycarbonate, polylactide, acrylic, acrylonitrile butadiene, styrene, fiberglass, and nylon. Examples of products made from these other plastics include plastic baby bottles, large water bottles, medical storage containers, eyeglasses, and exterior lighting fixtures.
In addition, these resins have been controversial in recent years: the reason for this is their degradation at high temperatures, which releases bisphenol A, a compound that is regarded as potentially hazardous to the environment. Plus, A 7 number type of plastic resin cannot be recycled.
Summary
In summary, the realm of synthetic polymers and plastics encompasses a vast array of materials that play crucial roles in our daily lives, offering everything from the robustness of PVC in construction to the adaptability of PET in packaging.
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