| 摘要 |
<p>The disclosure relates to a packaging material and packages, for example bottles, produced from the packaging material, for light-sensitive products. The packaging material (10) includes at least one layer (11) of mineral-filled plastic which, for light barrier elevating purposes, also includes particles (11c) of carbon black. The material (10) which is preferably of triple-layer type, has the mineral-filled layer (11) containing carbon black disposed between outer, surrounding layers (12 and 13) of plastic which is preferably the same plastic as the plastic in the interjacent layer (11). In order to conceal the interjacent layer (11) containing carbon black, at least one, but preferably both, of the outer plastic layers may incorporate white pigment or other white colouring agent, preferably titanium dioxide (TiO2). Bottles are produced from the packaging material (10) by a combined extrusion and blow moulding operation in a per se known manner using conventional process equipment.</p> |
