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Corrugated plastic

From Wikipedia, the free encyclopedia

Corrugated plastic box used as reusable packaging
Corrugated plastic box used as reusable packaging
Corrugated plastic dividers used to pack automotive components.
Corrugated plastic dividers used to pack automotive components.

Corrugated plastic or corriboard - also known under the tradenames of Polyflute, Coroplast, FlutePlast, IntePro, Proplex, Correx, Twinplast, Corriflute or Corflute - refers to a wide range of extruded twinwall plastic-sheet products produced from high-impact polypropylene resin with a similar make-up to corrugated fiberboard. It is a light-weight tough material which can easily be cut with a utility knife. Manufacturers typically offer a wide variety of colors and thicknesses (quite commonly 3, 4, 5 mm).

Corrugated plastic made of polycarbonate is sometimes referred to as Twinwall plastic.

Chemically, the sheet is inert, with a neutral pH factor. At regular temperatures most oils, solvents and water have no effect, allowing it to perform under adverse weather conditions or as a product component exposed to harsh chemicals. Standard sheets can be modified with additives, which are melt-blended into the sheet to meet specific needs of the end-user. Special products that require additives include: ultra-violet protection, anti-static, flame retardant, custom colors, corrosive inhibitors, static-dissipative, among others.

This material is commonly used to erect commercial, political or other types of signs and for constructing plastic containers and reusable packaging. It is widely used in the signwriting industry for making signs for real estate sales, construction sites and promotions.

The last decade has found its increasing use among guinea pig, rabbit, domesticated hedgehog and other small pet enthusiasts as components of DIY cages. Additionally, it is used by members of the remote-controlled aircraft community to build nearly indestructible SPAD model aircraft.

Use of corrugated plastic in welded hollow plastic plate air-to-air heat exchangers. From U.S. Patent 4,820,468[1]
Use of corrugated plastic in welded hollow plastic plate air-to-air heat exchangers. From U.S. Patent 4,820,468[1]

At least one manufacturer[who?] of air-to-air heat exchangers (used in heat recovery ventilation) uses a fused stack of sheets of this material alternating with spacers made of the same material as the heat-exchange medium. One air stream passes through the corrugated channels in the interior of the sheets, while the other passes between the exterior layers of the stacked sheets.

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Transcription

Contents

Recycling

Corrugated plastic is usually made from polypropylene which is capable of being recycled. Resin identification code 5 applies:

the number 5 surrounded by a recycling symbol, with the letters "P P" below.[2]

See also

References

  1. ^ US 4820468  "Method for making welded hollow plastic plate heat exchangers."
  2. ^ Plastics recycling information sheet, Waste Online

Further reading

  • Yam, K. L., Encyclopedia of Packaging Technology, John Wiley & Sons, 2009, ISBN 978-0-470-08704-6.
This page was last edited on 14 September 2018, at 00:41
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