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Resin identification code

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The SPI resin identification coding system is a set of symbols placed on plastics to identify the polymer type. [1]

27 relations: Bioplastic, Glasses, Headlamp, High-density polyethylene, Linear low-density polyethylene, List of symbols, Low-density polyethylene, Mackinaw City, Michigan, Miscellaneous Symbols, Nylon, PET bottle recycling, Plastic, Plastic lumber, Poly(methyl methacrylate), Polycarbonate, Polyethylene terephthalate, Polylactic acid, Polymer, Polypropylene, Polystyrene, Polyvinyl chloride, Recycling, Recycling symbol, Society of the Plastics Industry, Styrofoam, Unicode, Wash bottle.


Bioplastics are plastics derived from renewable biomass sources, such as vegetable fats and oils, corn starch, or microbiota.

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Glasses, also known as eyeglasses or spectacles, are frames bearing lenses worn in front of the eyes used for vision correction.

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A headlamp is a lamp attached to the front of a vehicle to light the road ahead.

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High-density polyethylene

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum.

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Linear low-density polyethylene

Linear low-density polyethylene (LLDPE) is a substantially linear polymer (polyethylene), with significant numbers of short branches, commonly made by copolymerization of ethylene with longer-chain olefins.

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List of symbols

This is a list of graphical signs, icons, and symbols.

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Low-density polyethylene

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.

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Mackinaw City, Michigan

Mackinaw City is a village in Emmet and Cheboygan counties in the U.S. state of Michigan.

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Miscellaneous Symbols

Miscellaneous Symbols is a Unicode block (U+2600–U+26FF) containing glyphs representing concepts from a variety of categories, astrological, astronomical, chess, dice, musical notation, political symbols, recycling, religious symbols, trigrams, warning signs, and weather, among others.

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Nylon is a generic designation for a family of synthetic polymers, more specifically aliphatic or semi-aromatic polyamides.

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PET bottle recycling

Bottles made of polyethylene terephthalate (PET, sometimes PETE) can be "recycled" to reuse the material out of which they are made and to reduce the amount of waste going into landfills.

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Plastic is a material consisting of any of a wide range of synthetic or semi-synthetic organics that are malleable and can be molded into solid objects of diverse shapes.

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Plastic lumber

Plastic lumber (PL) is a plastic form of lumber (timber) made of virgin or recycled plastic.

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Poly(methyl methacrylate)

Poly(methyl methacrylate) (PMMA), also known as acrylic or acrylic glass as well as by the trade names Plexiglas, Acrylite, Lucite, and Perspex among several others (see below), is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass.

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Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures.

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Polyethylene terephthalate

Polyethylene terephthalate (sometimes written poly(ethylene terephthalate)), commonly abbreviated PET, PETE, or the obsolete PETP or PET-P, is the most common thermoplastic polymer resin of the polyester family and is used in fibers for clothing, containers for liquids and foods, thermoforming for manufacturing, and in combination with glass fiber for engineering resins.

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Polylactic acid

Polylactic acid or polylactide (PLA, Poly) is a biodegradable thermoplastic aliphatic polyester derived from renewable resources, such as corn starch (in the United States and Canada), tapioca roots, chips or starch (mostly in Asia), or sugarcane (in the rest of the world).

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A polymer (Greek poly-, "many" + -mer, "parts") is a large molecule, or macromolecule, composed of many repeated subunits.

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Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications including packaging and labeling, textiles (e.g., ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes.

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Polystyrene (PS) is a synthetic aromatic polymer made from the monomer styrene.

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Polyvinyl chloride

Polyvinyl chloride, more correctly but unusually poly(vinyl chloride), commonly abbreviated PVC, is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene.

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Recycling is a process to convert waste materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution (from incineration) and water pollution (from landfilling) by reducing the need for "conventional" waste disposal and lower greenhouse gas emissions as compared to plastic production.

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Recycling symbol

The universal recycling symbol (or in Unicode) is an internationally recognized symbol used to designate recyclable materials.

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Society of the Plastics Industry

Founded in 1937, SPI: The Plastics Industry Trade Association represents the third largest manufacturing sector in the United States.

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Styrofoam is a trademarked brand of closed-cell extruded polystyrene foam currently made for thermal insulation and craft applications.

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Unicode is a computing industry standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems.

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Wash bottle

A wash bottle is a squeeze bottle with a nozzle, used to rinse various pieces of laboratory glassware, such as test tubes and round bottom flasks.

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[1] https://en.wikipedia.org/wiki/Resin_identification_code

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