Control of bubble size in a carbonated liquid

Patent metadata

Field	Value
Publication number	US-9327462-B2
Application number	US-201414148037-A
Country	US
Kind code	B2
Filing date	Jan 6, 2014
Priority date	Oct 20, 2010
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

Cans, bottles and/or other containers used to hold a carbonated beverage can include internal features to promote and/or control bubble formation.

First claim

The invention claimed is:

1. A method, comprising:
placing a core rod into a mold chamber, wherein
the core rod has numerous channels formed in a front face of the core rod;

injecting molten plastic into a space between the core rod and walls of the mold chamber so as to create a preform having pointed protrusions; and
blow-molding the preform so as to create a plastic bottle having the pointed protrusions on an interior bottom surface of the plastic bottle; wherein the blow-molding comprises stretch blow molding with a push rod having a concave cup-like end that fits over the pointed protrusions in the preform.

2. The method of claim 1 , wherein not all of the channels have the same dimensions.

3. The method of claim 1 , wherein a ring of the push rod end pushes against, a portion of the preform surface surrounding the pointed protrusions in the preform.

4. The method of claim 1 , wherein the channels are conically shaped.

5. The method of claim 1 , wherein the pointed protrusions are conically shaped.

6. The method of claim 1 , wherein the molten plastic comprises molten polyethylene terephthalate (PET).

Assignees

• Pepsico Inc

Inventors

• Nicholson Lee M
• Given Peter S
• Joshi Prasad V
• Liu Wei
• Lefebvre Denise H
• Jankowiak Marcin

Classifications

• B65D17/4012

  for opening partially by means of a tearing tab · CPC title

• B65D85/73 Primary

  with means specially adapted for effervescing the liquids, e.g. for forming bubbles or beer head · CPC title

• B29K2067/003

  PET, i.e. poylethylene terephthalate · CPC title

• B65D17/02

  of curved cross-section, e.g. cans of circular or elliptical cross-section · CPC title

• B65D25/38

  Devices for discharging contents ({containers formed by folding or erecting paper blanks B65D5/72} ; incorporated in removable or non-permanently secured closure members B65D47/00; for discharging thin flat articles B65D83/08) · CPC title