Bottle for storage of small volumes of carbonated beverages
A blow-molded bottle for a carbonated beverage includes a threaded mouth, a cylindrical side wall, a bottom, and a standard fill capacity of 37.5 mL to 105 mL. The bottle is blow-molded from a laminated preform including an outer layer formed from polyethylene terephthalate, an intermediate gas barrier layer formed from a polyamide comprising a dicarboxylic acid component and a diamine component comprising m-xylylenediamine, and an inner layer comprising polyethylene terephthalate. The laminated preform may weigh from about 4 to 16 grams. The polyamide layer provides the bottle with excellent resistance to carbon dioxide, hydrogen, and nitrogen transmission and prevents the degradation of nutrients and flavors.
1 . A blow-molded bottle for a carbonated beverage, the bottle comprising:
a threaded mouth;
a cylindrical side wall;
a bottom; and
a standard fill capacity of 37.5 mL to 105 mL;
wherein the bottle has a ratio of surface area to volume in the range of 1.1 to 1.3 cm −1 ;
wherein the bottom portion of the sidewall is curved inward;
wherein the diameter of the side wall is greater than the diameter of the mouth;
wherein the bottle is blow-molded from a laminated preform;
wherein the laminated preform comprises:
an outer layer formed from polyethylene terephthalate,
an intermediate gas barrier layer formed from a polyamide comprising a dicarboxylic acid component and a diamine component comprising m-xylylenediamine; and
an inner layer comprising polyethylene terephthalate;
wherein the laminated preform weighs from about 13 to 16 grams; and
wherein the blow-molded bottle extends the shelf life of the carbonated beverage by 37%-90% when compared to the same beverage stored in a comparative bottle made from a 21 g monolayer preform comprising a single polyethylene terephthalate layer;
has superior resistance to hydrogen, nitrogen, and CO 2 transmission, when compared to a comparative bottle with a standard fill capacity of 75 mL to 105 mL that is blow-molded from a comparative preform comprising a single polyethylene terephthalate layer and a weight of about 14.5 to 21 grams;
wherein the intermediate gas barrier layer provides 3% to 5% of the total mass of the preform.
2 . The blow-molded bottle of claim 1 , wherein the dicarboxylic acid component of the polyamide is an aliphatic dicarboxylic acid having an even number of between 6 and 10 carbon atoms, an isomer of benzenedicarboxylic acid, or a mixture thereof.
3 . The blow-molded bottle of claim 2 , wherein the dicarboxylic acid component of the polyamide comprises adipic acid, alone or in combination with an isomer of benzenedicarboxylic acid.
4 . The blow-molded bottle of claim 2 , wherein the dicarboxylic acid component of the polyamide is adipic acid.
5 . The blow-molded bottle of claim 1 , wherein the bottom has a punt.
6 . The blow-molded bottle of claim 1 , wherein the wall and base of the blow-molded bottle are 12% to 47% thinner than a wall and a base of the comparative bottle.
7 . The blow-molded bottle of claim 1 , wherein:
the bottle has a volume of 75 to 105 mL;
the laminated preform weighs 15 grams;
the wall and base of the blow-molded bottle are 20% to 41% thinner than a wall and a base of the comparative bottle; and
the comparative bottle has a volume of 75 to 105 mL, and is blow-molded from the comparative preform, wherein the comparative preform weighs 15 grams.