Provider of coatings for the hollow glass industry Bohemi Chemicals has developed a hot end coating that enhances the overall mechanical strength of the bottle. Startin S is pure (99%) monobutyltin trichloride, also known as MBTC, that is sprayed on the bottle just after the forming phase at 550–450°C. The high temperature causes all organic components to evaporate, laying down a homogeneous coat of tin oxide that closes any micro cracks on the glass bottle caused by the rough surface of the mould. The process strengthens the bottle and provides ‘grip’ for anchorage of the successive cold end coating. Startin S contains a double quantity of stabiliser, making it suitable for 24 months’ storage.

Bohemi supplies three cold end coatings suitable for different types of production requiring different quality specifications, based on polyethylene waxes with a 20–25% solid content for standard bottles, luxury bottles and tableware.

The company also makes sealing glue: an aqueous dispersion based on high molecular weight ethylene copolymer thermoplastic that has excellent adhesion on glass. It provides a heat seal film capable of enclosing a container with aluminium or paper sheet.

All of Bohemi Chemicals’ products are food grade approved.

Based in Milan, Italy, the company provides coatings to nearly 100 customers around the world without any minimum limit on quantity and with tailor-made solutions to meet customers’ needs.

www.bohemichemicals.com

View Bohemi’s presentation in the Virtual Marketplace: www.glassworldwide.co.uk/virtual-marketplace. The full version of the above news has been published in the May/June issue that has been posted globally and is available to read free of charge in the Digital Archive (sponsored by FIC) at https://www.glassworldwide.co.uk/Digital-Issues