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  2. Twinwall plastic - Wikipedia

    en.wikipedia.org/wiki/Twinwall_plastic

    Although single layer polycarbonate sheeting is more flexible than polycarbonate in twinwall configuration, it still retains significant advantages over alternative materials, including glass. A typical 6mm sheet has a density of 0.72 g/cm^2 [ 6 ] and a thermal insulation R value of 0.3 m^2°C/W, while allowing 80% of visible light pass through ...

  3. Polycarbonate - Wikipedia

    en.wikipedia.org/wiki/Polycarbonate

    Other applications, including polycarbonate sheets, may have the anti-UV layer added as a special coating or a coextrusion for enhanced weathering resistance. Polycarbonate is also used as a printing substrate for nameplate and other forms of industrial grade under printed products. The polycarbonate provides a barrier to wear, the elements ...

  4. Optical disc - Wikipedia

    en.wikipedia.org/wiki/Optical_disc

    The molten polycarbonate fills the pits or spaces between the lands on the negative, acquiring their shape when it solidifies. This step is somewhat similar to record pressing. The polycarbonate disc cools quickly and is promptly removed from the machine, before forming another disc.

  5. Tritan copolyester - Wikipedia

    en.wikipedia.org/wiki/Tritan_copolyester

    Tritan, a copolymer offered by the Eastman Chemical Company since 2007, is a transparent plastic intended to replace polycarbonate, because of health concerns about Bisphenol A (BPA). [1] [2] Tritan is a copolymer made from three monomers: dimethyl terephthalate (DMT), cyclohexanedimethanol (CHDM), and 2,2,4,4-Tetramethyl-1,3-cyclobutanediol ...

  6. Plastic extrusion - Wikipedia

    en.wikipedia.org/wiki/Plastic_extrusion

    Cross-section of a plastic extruder to show the screw Short video on injection molding (9 min 37 s). Plastics extrusion is a high-volume manufacturing process in which raw plastic is melted and formed into a continuous profile.

  7. Compact disc - Wikipedia

    en.wikipedia.org/wiki/Compact_disc

    A polycarbonate disc layer has the data encoded by using bumps. A shiny layer reflects the laser. A layer of lacquer protects the shiny layer. Artwork is screen printed on the top of the disc. A laser beam is reflected off the CD to a sensor, which converts it into electronic data.

  8. Double-walled pipe - Wikipedia

    en.wikipedia.org/wiki/Double-walled_pipe

    Double-walled pipe system may use plastic pressure pipe systems materials of high-density polyethylene (HDPE), polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene (PP), polyvinylidene fluoride (PVDF), and ethylene chlorotrifluoroethylene copolymer (ECTFE).

  9. Thermoplastic-sheathed cable - Wikipedia

    en.wikipedia.org/wiki/Thermoplastic-sheathed_cable

    10/4 mm 2 and 16/6 mm 2 have stranded conductors and CPC (fixed high power equipment or sub-mains) In older properties (pre-1970) cable with imperial sizes are found ...

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