Knowra Plastic bottle Plastic bottle A hollow container made from plastic, typically used to store and dispense liquids. Its shape, resin, and closure are designed around the contents and intended use.
Polyethylene terephthalate : A strong, lightweight thermoplastic polyester commonly used for beverage bottles and food packaging. Its clarity, strength, and gas barrier make it the standard resin for many drink bottles.
Carbonated soft drink : A sweetened beverage containing dissolved carbon dioxide that produces effervescence when released. Carbonation requires bottles that resist internal pressure and limit gas loss.
Polymer : A large molecule made of repeating chemical units linked into chains or networks. Bottle plastics are polymers whose chain structure governs their processing and properties.
Plastic pollution : The accumulation of plastic materials in the environment, where they can persist and harm ecosystems. Discarded bottles are a conspicuous source of plastic litter on land and in waterways.
Glass bottle : A hollow container made from glass, commonly used to store and dispense liquids. Glass is reusable and highly recyclable, but heavier and more breakable than plastic.
High-density polyethylene : A durable, chemically resistant thermoplastic used in containers, pipes, and household products. It forms opaque, squeezable bottles for products such as milk, detergent, and shampoo.
Milk bottle : A container designed to store and dispense milk, traditionally made from glass or plastic. Milk packaging favors opaque, easy-to-handle bottles that protect contents from light.
Polymer crystallinity : The degree to which polymer chains are arranged in ordered regions rather than disordered regions. Crystallinity affects a bottle resin's stiffness, clarity, and resistance to gases.
Bottle deposit scheme : A system that charges a refundable deposit on beverage containers to encourage their return. Refunds can increase collection of used bottles and reduce litter.
Aluminum can : A sealed metal container, usually made from aluminum, used for beverages and other products. Cans offer a rigid, opaque alternative with different transport and recycling trade-offs.
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