Appeal No. 1996-1792 Page 3
Application No. 08/220,244
BACKGROUND
Appellants' invention relates to a bottle having a molded
wall comprising three layers of the same resin with the
intermediate layer including a black colorant that renders that
layer opaque to light transmission. The inner and outer layers
each include a white colorant to mask the black coloration of
the intermediate layer. A method of forming such a bottle is
also claimed. According to appellants, the claimed bottle
"provides a clean white, aesthetically pleasing appearance"
while being "an effective barrier to light transmission" so as
to be useful for storing light sensitive material, such as some
medicaments (brief, page 3). The masked black colored opaque
middle layer may include recycled resins (brief, page 3). An
understanding of the invention can be derived from a reading of
exemplary claim 1, which is reproduced below.
1. A bottle for protecting its associated contents from
degradation due to light, said bottle having an integrally
molded wall having three layers of the same synthetic resin,
each of said layers including a colorant, the colorant of said
intermediate layer providing a black opaque coloration
substantially opaque to light transmission, and the colorant of
the inner and outer layers providing a white opaque coloration
masking said black coloration of said intermediate layer to
provide an apparently uniform coloration for the inner and
outer surfaces of said wall and concealing the multilayer
character of said wall.
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007