BOTTLE-FORMING PREFORM WITH A MULTILAYERED WALL, AND GASEOUS BEVERAGE BOTTLE OBTAINED WITH SUCH A PREFORM
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United States of America Patent
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Issued Date -
Oct 24, 2024
app pub date -
Jul 12, 2022
filing date -
Jul 12, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
The invention concerns a preform (10) for forming a bottle for gaseous beverage, the preform comprising a multilayered wall obtained by injection in a mould from an injecting point (22) located at a central bottom end of the preform, the multilayered wall including an inner layer (24), an outer layer (26) and a gasbarrier layer (28) sandwiched between the inner and outer layer. The gas barrier layer (26) advantageously extends along the entire preform multilayered wall except for a bottom ending portion (30), this bottom ending portion free of barrier layer (30) being a central part of a base-forming portion (20) delimited by a solid angle (α) comprised between 5° to 80°, the apex (C) of this solid angle being the centre of a semi-spherical lower segment of the base-forming portion (20). A bottle obtained by blow-moulding such a preform has a bottom ending portion free of barrier layer within a solid angle comprised between 5° and 50°.
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