Receptacle Liner With Resilient Segment For Rim Grip
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Solution Overview
Problem
Conventional receptacle liners lack features to securely grip the rim of the receptacle, leading to instability and potential falling off during use.
Innovation Solution
A liner design featuring segments made from different materials, where a more elastically resilient material forms a segment extending from the bottom to the top, allowing the top to expand and grip the receptacle rim, combined with a gusseted bag configuration and handle apertures for secure fitting and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liners are used with closed bottom and open top, then the liner structure is simple, but the liner cannot securely grip the receptacle rim and is prone to fall off
Solution Approach 1:
The patent changes the material parameter of the liner by incorporating an elastomeric layer with specific elastic properties (modulus of elasticity between 100-1000 psi) that enables the liner to expand and contract, providing secure grip on the receptacle rim while maintaining structural integrity
Solution Approach 2:
The patent uses a composite structure combining a non-elastomeric layer (providing structural support) with an elastomeric layer (providing gripping capability), creating a multi-layer liner that achieves both stability and secure rim attachment without excessive complexity
2Reliability
If elastic drawstrings are added to grip the receptacle rim, then the grip stability improves, but the manufacturing complexity increases with additional manufacturing steps
Solution Approach 1:
The patent merges the drawstring function into the liner body itself by forming an integrated elastomeric layer that provides both structural support and rim-gripping capability, eliminating the need for separate drawstring components and additional assembly steps
Solution Approach 2:
The patent changes the material properties of the liner by using an elastomeric layer with specific elastic recovery properties that enable the liner to automatically grip and maintain pressure on the receptacle rim without requiring additional fastening mechanisms
3Reliability
If the liner material is made more elastically resilient to expand and grip the rim, then the grip stability improves, but the liner may lose structural robustness for filled contents
Solution Approach 1:
The patent employs a composite liner structure where the non-elastomeric layer provides structural strength and rigidity to support filled contents, while the elastomeric layer provides the necessary elasticity for rim gripping, thereby maintaining both strength and flexibility
Solution Approach 2:
The patent applies different material properties to different regions of the liner: the elastomeric layer is positioned at the top opening where gripping is needed, while the non-elastomeric layer provides structural support throughout the body, ensuring each region has the appropriate local quality for its function
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 the liner securely attaches to the receptacle rim, preventing it from falling off and providing user-friendly handling with minimal manufacturing steps and waste, while maintaining robustness for filled contents.
Implementation Method 1
the second segment is formed of a second material that is more elastically resilient than the first material whereby the mouth at the top of the liner can be expanded by resiliently stretching the second segment so that the liner may apply a gripping force to the receptacle
Data Source
AI summary
A receptacle liner for gripping the receptacle and method of making. A liner may be formed by one or more panels including at least one resilient segment extending from a bottom to a top of the liner. The liner segment can be coextruded so that the resilient segment is made from resilient material and other portions of the liner are made from another material that is less resilient. When the liner is placed in a receptacle, the liner can be expanded by resiliently stretching the resilient segment so that the liner may apply a gripping force to the receptacle. The liner can include gusseted side panels. A mouth can be formed as a recess in the top ends of front and rear panels and extend through the gusseted side panels to define handle portions and form apertures in the handle portions that open to the mouth.