Plastic Neck Outsert for Metal Bottles on Plastic Bottling Lines
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Solution Overview
Problem
Metal beverage bottles with smooth necks are not compatible with plastic bottling lines, as they lack the necessary neck structure to be filled and processed, and adapting them with a support flange is difficult and costly.
Innovation Solution
A plastic outsert is designed with a smooth interior and exterior threads, a support flange, and a tapered transition, allowing it to be assembled onto metal bottles, enabling them to be used on plastic bottling lines and accepting plastic bottle caps, while maintaining a smooth, cost-effective manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If metal beverage bottles have smooth necks for easy manufacture, then manufacturing cost is reduced, but they cannot accept plastic closures or be processed on plastic bottling lines
Solution Approach 1:
The invention divides the bottle neck into two functional segments: the metal bottle body maintains its smooth neck for easy manufacturing, while a separate plastic outsert component is added to provide threading and compatibility features. This segmentation allows each part to optimize its own function without compromising the other.
Solution Approach 2:
The plastic outsert acts as an intermediary component between the metal bottle neck and plastic closures/bottling line equipment. It mediates the incompatibility by providing the necessary threading and structural features that metal bottles lack, while being easily attachable to the smooth metal neck.
2Adaptability or versatility
If metal bottles are adapted with support flanges for plastic bottling line compatibility, then adaptability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
Instead of modifying the entire metal bottle structure to include support flanges, the invention segments the compatibility features into a separate plastic outsert component. This avoids complex metal forming operations and keeps the manufacturing process simple.
Solution Approach 2:
The plastic outsert is a relatively simple, inexpensive component compared to modifying metal bottle manufacturing processes. It can be easily produced and attached, providing an economical solution for achieving bottling line compatibility.
3Ease of manufacture
If metal bottles lack threading on their necks, then manufacturing is simpler, but they cannot accept plastic closures
Solution Approach 1:
The invention segments the threading function from the metal bottle body and places it on the separate plastic outsert. This maintains the simplicity of metal bottle manufacturing while adding closure compatibility through the outsert's external threading.
Solution Approach 2:
The plastic outsert with external threading serves as an intermediary that enables plastic closure compatibility without requiring threading on the metal bottle neck itself. It bridges the gap between the smooth metal neck and the threaded closure requirement.
Data Source
AI summary
A metal bottle assembly adapted for use on a plastic bottling includes a metal bottle with an outsert assembled on the neck portion of the bottle. The outsert may be constructed from plastic material and may be fixed to the bottle using an interference fit. The outsert enables the bottle to be placed on a plastic bottling line with minimal or no modifications to the bottling line. The outsert also ensures that the metal bottle is not damaged by handling on the plastic bottling line. In some embodiments, the outsert is designed to elastically deform as it is pressed on the neck of a pre-formed metal bottle and therefore create the interference fit between the outsert and the bottle. In some embodiments the outsert is retained on the neck of the bottle through the interference fit alone.