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US 11,383,420 B2Granted
Resin bottle and method for making the same
AssigneeThe Coca-Cola Company
InventorsNaoto Mikajiri, Manabu Inomata
Life of this patent
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Abstract
To provide a resin container and a method for manufacturing the same with which it is possible to generate more effervescence than hitherto. This resin container is provided with: a resin container main body inside which is formed an accommodating space that is hermetically sealed using a cap; and a textured region which is formed on an inner surface of the container main body and is formed from a rough surface.
Claims13
A resin container comprising:
- a resin container main body inside which is formed an accommodating space that is hermetically sealed using a cap;
- and
- a textured region which is formed on an inner surface of the container main body and is formed from a rough surface comprising fine irregularities having an arithmetic mean roughness (Ra) of between 0.8 micrometers and 7.0 micrometers, a ten-point mean roughness (Rz) of between 4 micrometers and 25 micrometers, and a mean spacing (Rsm) of between 100 micrometers and 500 micrometers.
A resin container for a beverage comprising:
- a carbonated beverage;
- a resin container main body inside which is formed an accommodating space in which the carbonated beverage is accommodated;
- a cap which is attached to a mouth portion of the container main body and which hermetically seals the accommodating space;
- and
- a textured region which is formed on an inner surface of the container main body and is formed from a rough surface comprising fine irregularities having an arithmetic mean roughness (Ra) of between 0.8 micrometers and 7.0 micrometers, a ten-point mean roughness (Rz) of between 4 micrometers and 25 micrometers, and a mean spacing (Rsm) of between 100 micrometers and 500 micrometers.
2 more elements
A method for manufacturing a resin container, comprising:
- preparing a resin preform having on an inner surface of a main body portion of the resin preform a textured pattern formed from a rough surface comprising fine irregularities having an arithmetic mean roughness (Ra) of between 4 micrometers and 11 micrometers;
- and
- stretching the preform by blow molding, to mold the resin container having on an inner surface thereof a textured region formed from the rough surface comprising fine irregularities having an arithmetic mean roughness (Ra) of between 0.8 micrometers and 7.0 micrometers, a ten-point roughness (Rz) of between 4 micrometers and 25 micrometers, and a mean spacing (Rsm) of between 100 micrometers and 500 micrometers.
A method for manufacturing a resin container, comprising:
- disposing in a cavity of a die a resin preform having a main body portion in the shape of a bottomed cylinder;
- and
- inserting into the preform a stretch rod having on a distal end thereof a texture-imparting pattern formed from a rough surface comprising fine irregularities having an arithmetic mean roughness (Ra) of between 4 micrometers and 11 micrometers;
- blow-molding the resin container by stretching the preform while pressing the distal end of the stretch rod against the bottom surface of the main body comprising fine irregularities having an arithmetic mean roughness (Ra) of between 0.8 micrometers and 7.0 micrometers, a ten-point roughness (Rz) of between 4 micrometers and 25 micrometers, and a mean spacing (Rsm) of between 100 micrometers and 500 micrometers.
1 more element
Dependencies are inferred from the claim text.