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UV radiation-absorber packing
The invention relates to a packing for foods sensitive to UV radiation. More in particular, the invention relates to a packing made of green glass UV Absorber UV radiation, e.g. a bottle for packing foods and beverages made of green glass absorbing UV radiation and largely transmitting visible light. This means that efforts are directed to obtaining a type of glass largely transmitting visible light and having a green color. The latter means that the dominant wavelength of the glass is in the vicinity of 500 to 565 nm.
As is known, UV radiation, more in particular radiation having a wavelength less than about 400 nm, has a negative effect on the odor and the flavor of foods and beverages, such as beer. This negative effect is ascribed to the chemical reaction of components under the influence of UV radiation.
It has long since been known that it is possible to reduce UV radiation by using glass provided with a number of additions, mostly metal compounds. Until recently UV radiation-absorbing green glass, to which the present invention relates, was chiefly obtained by incorporating chromium compounds in the glass. EP-A 261 725 describes the manufacture of green UV radiation-absorbing soda-lime glass with an amount of chromium compounds which may be partially replaced by nickel Compounds, if required. The use of especially chromium compounds, like of nickel compounds, is increasingly felt to be less desirable, both from the viewpoint of costs and from the viewpoint of environmental effects of the metal compounds.
As is known, UV radiation, more in particular radiation having a wavelength less than about 400 nm, has a negative effect on the odor and the flavor of foods and beverages, such as beer. This negative effect is ascribed to the chemical reaction of components under the influence of UV radiation.
It has long since been known that it is possible to reduce UV radiation by using glass provided with a number of additions, mostly metal compounds. Until recently UV radiation-absorbing green glass, to which the present invention relates, was chiefly obtained by incorporating chromium compounds in the glass. EP-A 261 725 describes the manufacture of green UV radiation-absorbing soda-lime glass with an amount of chromium compounds which may be partially replaced by nickel Compounds, if required. The use of especially chromium compounds, like of nickel compounds, is increasingly felt to be less desirable, both from the viewpoint of costs and from the viewpoint of environmental effects of the metal compounds.
Light Stabilizer for Plastics
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