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Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process. The presence on an item of a recycling code, a chasing arrows logo, or a resin code , is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
Resin code for polyethylene terephthalate Polypropylene lid of a Tic Tac box, with a living hinge and the resin identification code, 5, under its flap. The Resin Identification Code (RIC) is a technical standard with a set of symbols appearing on plastic products that identify the plastic resin out of which the product is made. [1]
Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. Polycarbonate lenses also protect the eye from UV light.
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GOST R 52936-2008: Free-flow diving suits. General technical requirements; GOST R 53279-2009: Fire equipment. Fire connecting heads. General technical requirements. Methods of testing; GOST R 53574-2009: Noise. Assessment of noise annoyance by means of social and socio-acoustic surveys; GOST R 53685-2009: Electrification and electric supply of ...
Download QR code; Print/export Download as PDF; Printable version; ... (Exposition Press Books, 1974) References This page was last edited on 24 May ...
A polycarbonate is an oxocarbon dianion consisting of a chain of carbonate units, where successive carbonyl groups are directly linked to each other by shared additional oxygen atoms. That is, they are the conjugate bases of polycarbonic acids , the conceptual anhydrides of carbonic acid , or polymers of carbon dioxide .
Japan has a system of recycling marks, recycling identification marks (リサイクル識別表示マーク), which indicate and classify recyclable materials. They are similar to the resin identification codes , in that they have surrounding arrows, with text inside to indicate the type of material.