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Laminated glass is obtained by bonding glass layers using a polymeric interlayer. One polymer used as interlayer is polyvinyl butyral (PVB). Up to now, most of the post-consumer PVB material in laminated glass is incinerated or landfilled, and only 9 % are recycled in secondary uses. Recycling of PVB presents several difficulties related with the contents of glass, humidity, mixing of compositions and polymer optical degradation.

New - Missing Box: A new, unused item with no signs of wear. The item may be missing the original packaging.

The goal of the CWA is to support the use of PVB recyclates by helping the involved parties to agree on the required specifications and promote quality controls and information on properties of PVB recyclates.

This CEN Workshop (CEN/WS) is initiated by the SUNRISE project partners to develop a CEN Workshop Agreement (CWA) on “Plastics – Recycled plastics – Characterization of polyvinyl butyral (PVB) recyclates”. The CWA will define a method of specifying delivery conditions for PVB recyclates and will give the most important characteristics and associated test methods for assessing PVB recyclates intended for use in the production of semi-finished/finished products.

PVBglass

PVA

Manufactured By: ORION FITTINGS Manufacturer Part Number: 1836144 IMS Product Code: 1836144 Packaging: Sold Individually

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The objective of the European funded research project SUNRISE is to optimize the recycling of PVB from laminated glass by sorting the incoming material according to the composition and quality of its PVB interlayer. The different sorted grades of the corresponding PVB recyclates can then be used in various applications.

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