Forming glass containers from tubular parisons

Patent metadata

Field	Value
Publication number	US-11414337-B2
Application number	US-201916555680-A
Country	US
Kind code	B2
Filing date	Aug 29, 2019
Priority date	Aug 29, 2019
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A method and apparatus for forming a glass parison are disclosed. The method of forming a glass container in accordance with one aspect of the disclosure includes flowing molten glass to a glass feeder spout located immediately upstream of die rollers; feeding molten glass through an annular space established between an orifice ring of the glass feeder spout and a plunger of the glass feeder spout; blowing gas through the plunger into the molten glass to form a continuous tube of molten glass; and die rolling the continuous tube into a continuous string of glass containers.

First claim

The invention claimed is:

1. A method of forming a glass container, comprising:
flowing molten glass to a glass feeder spout located immediately upstream of die rollers;
feeding molten glass through an annular space established between an orifice ring of the glass feeder spout and a plunger of the glass feeder spout;
blowing gas through the plunger into the molten glass to form a continuous tube of the molten glass; and
die rolling the continuous tube into a continuous string of glass containers;
wherein each glass container of the continuous string of glass containers includes at least one open end.

2. The method of claim 1 , wherein the die rollers include polyhedrons carrying one cavity on each face.

3. The method of claim 1 , wherein the die rollers include polyhedrons carrying more than one cavity on each face.

4. The method of claim 1 , wherein the die rollers include two die rollers.

5. The method of claim 1 , wherein the die rollers include at least two sets of die rollers.

6. The method of claim 1 , wherein feeding the molten glass through the annular space includes using the plunger to propel the molten glass.

7. The method of claim 1 , wherein the plunger includes a blow conduit.

8. The method of claim 1 , wherein die rolling the continuous tube includes forming a seal on a bottom of each glass container.

9. The method of claim 1 , further comprising:
applying vacuum through the die rollers to assist with shaping the containers; and
cooling the die rollers by rolling them through a liquid bath.

10. The method of claim 9 , wherein the vacuum is applied to at least one of the at least two die rollers through a stationary vacuum manifold such that the vacuum is applied to a first respective cavity of a first respective face of the at least one of the die rollers at a different time than the vacuum is applied to a second respective cavity of a second respective face of the at least one of the die rollers.

11. The method of claim 9 , wherein the applying vacuum step includes applying the vacuum via vacuum hoses, each respective vacuum hose coupled to a respective opening in the die rollers, the respective opening corresponding to a respective cavity on a respective face of each die of the die rollers.

12. The method of claim 1 , further comprising:
severing the continuous string of glass containers into individual glass containers.

13. The method of claim 1 , wherein the orifice ring includes a heating mechanism.

14. The method of claim 1 , further comprising:
cooling the die rollers by directing a heat exchange medium toward the die rollers via a discharge device.

15. The method of claim 13 , wherein the discharge device is a spray nozzle.

16. The method of claim 13 , where in the discharge device is a pipe, whereby the heat exchange medium exits the pipe as a waterfall.

17. The method of claim 1 , wherein the die rollers are located below the glass feeder spout to receive the continuous tube as it flows downwardly from the glass feeder spout.

Assignees

• Owens Brockway Glass Container

Inventors

• Anderson Walter

Classifications

• C03B7/086

  Plunger mechanisms · CPC title

• C03B7/088

  Outlets, e.g. orifice rings · CPC title

• C03B9/1932

  Details of such machines, e.g. plungers or plunger mechanisms for the press-and-blow machine, cooling of plungers (C03B9/195 takes precedence) · CPC title

• B65D1/02

  Bottles or similar containers with necks or like restricted apertures, designed for pouring contents (thermally-insulated containers B65D81/38, A47J41/00; {feeding-bottles A61J9/00}) · CPC title

• C03B7/08 Primary

  Feeder spouts, e.g. gob feeders · CPC title