Delaminating Bottle Structure for Squeeze Recovery and Layer Separation
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Solution Overview
Problem
Conventional containers with separable laminated layers face challenges in ensuring both flexibility and restorability of the squeeze area while maintaining effective separability of the inner layer body from the outer layer body after dispensing contents.
Innovation Solution
The container design incorporates a recessed structure in the circumferential step or rib portion, with concave ribs and grooves, and a reinforced area with secondary recesses to enhance separability and dispensing operability, using polyethylene terephthalate for the outer and inner layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the step of the step portion is made larger or the rib portion is formed deeper to increase flexibility and restorability of the squeeze area, then dispensing operability is improved, but the inner layer body becomes less likely to separate from the outer layer body after dispensing
Solution Approach 1:
The circumferential step portion is segmented by dividing it into multiple compression-resistant areas arranged circumferentially. Each area contains a rib portion with controlled depth, preventing any single deep rib from blocking inner layer body collapse while collectively providing sufficient structural support for squeeze flexibility.
Solution Approach 2:
Different regions of the circumferential step portion have different rib portion depths and compression resistances. The rib portions are strategically positioned to provide localized structural support where needed while allowing other regions to collapse more easily, achieving both flexibility and separability.
2Reliability
If the step of the step portion is made smaller or the rib portion is formed shallower to improve separability of the inner layer body, then separability is improved, but flexibility and restorability of the squeeze area are insufficient
Solution Approach 1:
The circumferential step portion is divided into multiple compression-resistant areas with rib portions distributed circumferentially. This segmentation allows the structure to provide sufficient overall support for squeeze flexibility while individual rib portions remain shallow enough to permit inner layer body collapse and separation.
Solution Approach 2:
Multiple shallow rib portions are combined circumferentially to collectively provide the structural support needed for squeeze area flexibility and restorability, while each individual rib portion maintains sufficient shallowness to allow inner layer body collapse and separation.
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
The design ensures increased separability of the inner layer body while maintaining favorable dispensing operability and ensures the effectiveness of the container's functionality.
Implementation Method 1
an inner layer body separably laminated on an inner surface of the outer layer body and capable of undergoing volume reduction and shape change
Implementation Method 2
the trunk has a flexible and restorable squeeze area, which can be squeezed (pressed) so that the contents stored inside the container are dispensed to the outside through the mouth
Data Source
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AI summary
A container (1) with separable laminated layers includes an outer layer body (2), an inner layer body (3) separably laminated on an inner surface of the outer layer body (2) and capable of undergoing volume reduction and shape change, and an ambient air inlet (9) continuously extending between the outer layer body (2) and the inner layer body (3). The container (1) with separable laminated layers has a bottle shape including a tubular mouth (4), a shoulder (5) continuous with the mouth (4), a trunk (6) continuous with the shoulder (5), and a bottom (7) continuous with the trunk (6). The trunk (6) includes a squeeze area (6a) that is continuous with the shoulder (5) via a circumferential step portion (11) or a circumferential rib portion. The step portion (11) or the rib portion is provided with a recess (20) that is concave toward an inner side of the container.