Glass Container with Sharp Indicia via Blank Mold Embossing
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Solution Overview
Problem
Existing glass container manufacturing methods struggle to produce sharply outlined indicia on external surfaces without the embossments protruding into the container interior, as blow molding techniques often result in less sharpness due to glass flowing and leveling.
Innovation Solution
A method involving forming a parison with pre-defined indicia during the blank molding stage, using a blank mold with engravings to create embossments that are then collapsed into the container wall during blow molding, ensuring sharpness and retention without material being pushed through the wall into the interior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If blow molding techniques are used to form indicia on glass containers, then the manufacturing process is simple and efficient, but the sharpness of the indicia is reduced due to glass flowing and leveling
Solution Approach 1:
The indicia are pre-formed as embossments on the exterior surface of the parison during the blank molding stage, before the blow molding process occurs. This preliminary formation allows the sharp details to be established early when the glass is more formable, and then the parison is simply expanded during blow molding without requiring the glass to flow into sharp features at that stage.
Solution Approach 2:
The manufacturing process is divided into two distinct stages: blank molding (forming the parison with pre-formed embossments) and blow molding (expanding the parison into the final container). This segmentation allows each stage to be optimized independently - the blank molding creates sharp embossments while the blow molding simply expands the pre-formed features without requiring complex tooling or processes.
2Manufacturing precision
If embossments are formed on the parison exterior during blank molding, then sharp indicia are achieved, but there is a risk that material may be pushed through the wall into the container interior
Solution Approach 1:
The embossments are designed with controlled depth and geometry such that they extend only partially into the parison wall thickness. The local depth of the embossments is optimized to create sharp external indicia while stopping before penetrating through the wall, ensuring that the glass material remains continuous and structurally sound throughout the container wall.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the creation of containers with sharply outlined external indicia, such as text and logos, that are sharper than previously achievable, maintaining the container's structural integrity and appearance.
Implementation Method 1
forming a parison into conformity with an internal surface of a blank mold having an engraving in the internal surface that forms an embossment on an exterior surface of the parison
Implementation Method 2
blowing the parison into conformity with an internal surface of a blow mold to produce a container from the parison, including pushing the embossment against the blow mold internal surface to collapse the embossment into a wall of the container
Data Source
AI summary
A container extends along a longitudinal axis and includes a base, a body extending axially from the base, and a generally radially outwardly facing external surface having sharply outlined indicia. The indicia includes generally V-shaped depressions having outer slopes, inner slopes, and vertices connecting the slopes. A method of making the container is also disclosed.