Resin identification code in the context of Polycarbonate

⭐ Core Definition: Resin identification code

A resin identification code (RIC) is a symbol embedded on plastic products, used to sort plastic waste for recycling. They consist of a triangle of clockwise "chasing arrows", around a number indicating what type of resin it is made of (01 for PET, 02 for HDPE, 03 for PVC, 04 for LDPE, 05 for polypropylene, 06 for polystyrene, or 07 for Other).

These symbols were originally created in 1988 by the Plastics Industry Association in the United States, amid growing concerns about plastic pollution. Since 2008, they are administrated by the ASTM and comprise the technical standard D7611/D7611M-21 "Standard Practice for Coding Plastic Manufactured Articles for Resin Identification". The European Commission Decision 97/129/EC "Identification System For Packaging Materials" extends this system with recycling codes for other materials like batteries, paper, and glass.

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👉 Resin identification code in the context of Polycarbonate

Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates find many applications. Polycarbonates do not have a unique resin identification code (RIC) and are identified as "Other", 7 on the RIC list. Products made from polycarbonate can contain the precursor monomer bisphenol A (BPA).

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⭐ Core Definition: Resin identification code
👉 Resin identification code in the context of Polycarbonate
Resin identification code in the context of Polystyrene
Resin identification code in the context of HDPE

Resin identification code in the context of Polystyrene

Polystyrene (PS) /ˌpɒliˈstaɪriːn/ is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to air and water vapor and has a relatively low melting point. Polystyrene is one of the most widely used plastics, with the scale of its production being several million tonnes per year. Polystyrene is naturally transparent to visible light, but can be colored with colorants. Uses include protective packaging (such as packing peanuts and optical disc jewel cases), containers, lids, bottles, trays, tumblers, disposable cutlery, in the making of models, and as an alternative material for phonograph records.

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Resin identification code in the context of HDPE

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a thermoplastic polymer produced from the monomer ethylene. It is sometimes called "alkathene" or "polythene" when used for HDPE pipes. With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes and plastic lumber. HDPE is commonly recycled, and has the number "2" as its resin identification code.

In 2008, the global HDPE market reached a volume of more than 30 million tons.

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Resin identification code in the context of Polycarbonate

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⭐ Core Definition: Resin identification code

👉 Resin identification code in the context of Polycarbonate

Resin identification code in the context of Polystyrene

Resin identification code in the context of HDPE