High-quality coatings for the hollow glass industry


Since 1998 we provide high quality coatings for the hollow glass industry from our warehouse in Milan, Italy to more than 100 customers all over the world. During this 20 years of activity we developed an expertise in the problem solving of the quality of hollow glass from the hot tunnel to the labelling process. Bohemi Chemicals’ philosophy is to focus on a limited range of products as long as they are on the cutting edge of quality and are capable of providing a real added value.



STARTIN S : pure MonoButylTinChloride (MBTC3) at 99,0 % to be sprayed on the bottle just after the forming phase at 550-450°C. The pure Tin layer remaining from the evaporation of the MBTC3 closes the microcracks of the glass caused by the rough surface of the mould, enhances the overall mechanical strength of the bottle and provides a grip for the successive cold end coating anchorage is provided. Startin S beyond being pure al 99,0 % presents a double quantity of stabilizer component making it suitable for more than 6 months storage.


Cold end coating is based on Polyethylene Waxes with a 20-25% solid content and has a strong impact on the overall result, finishing and lifecycle of the bottle; it is applied after the annealing lehr (150°

  • 90° C). Sprayed on the bottle with appropriate and well oriented guns, it forms a protective plastic layer anchored on the hot end coating enhancing scratching resistance and avoiding the typical white ring on the its shoulder. Bohemi Chemicals supplies 3 Cold End Coatings suitable for different types of production requiring different quality specifications: standard bottles, luxury bottles and tableware. P4218 M : standard quality cold end coating suitable for a generalist production such as for wine, beer or water bottles which do not justify the use of costly treatments.

P1500 : very high quality coating suitable for luxury bottles such as for cognac, whiskey and champagne bottles. Thanks to its superior strength it has a proper application in returnable bottles which have to face an extended lifecycle and periodical sterilizing processes with caustic soda which may remove the coating. P1500 is a very versatile product capable of maintaining its properties in a wider range of application parameters as concentration percentage, spray angle and temperature. EN21 : the cold treatment for tableware items which are normally subjected to minor mechanical stresses thanks to the dedicated packaging and direct path to the final consumer. EN21 is specifically formulated for this type of products to have the best quality/cost ratio.


Glass packaging is widely perceived as a high-quality choice from the consumers, and many food producers base their products’ positioning strategy on this characteristic. Nowadays we can find in supermarkets a wide range of glass containers such as for yogurts, chocolate creams, jams, perfumes and medicines. The Food’s Safety Regulations impose a strictly procedure for the packaging and in many case the container must implement a protective foil film between the content and the external cap.

P5010 : is an aqueous dispersion based on high molecular weight ethylene copolymer thermoplastic having an excellent adhesion on glass. It provides a heat seal film capable of perfectly closing the container with the aluminium or paper sheet. Differently from other products which have to be applied by the food producer when he fills the jar, P5010 can be applied on the justly created container, left to dry and be secondly thermally reactivated when the jar is filled and closed by the external cap. In this way the glassmaker can offer a more complete service and the food maker can forget about the glue’s supplying and application. Furthermore, P5010 does not leaves the typical and annoying aluminium or paper residues when the product is opened by the consumer.