Composite Cover Sheet With Removable Strip For Tray Sealing
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Solution Overview
Problem
Existing cover sheets for containers storing and dispensing consumer products often have issues with secure attachment and easy removal, particularly when made of materials like metal foils or polymeric films, which can be cumbersome and not easily printable.
Innovation Solution
A cover sheet design featuring a first layer with a printable surface and a second liner layer, where a removable strip is applied with a release layer, allowing easy detachment and secure adhesion to the tray using an adhesive layer, with pre-formed tear lines for easy handling and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal foils or polymeric films are used for cover sheets, then protection and sealing are improved, but ease of printing and handling deteriorates
Solution Approach 1:
The cover sheet comprises a paper or card layer combined with a foil layer, creating a composite structure that integrates the printability and handling properties of paper with the protective and sealing properties of foil. This composite material resolves the contradiction by allowing the cover sheet to be easily printed on and handled like paper while maintaining the reliability of metal foil or polymeric film for protection and sealing.
2Strength
If adhesive layers are added for secure attachment, then attachment strength is improved, but device complexity increases
Solution Approach 1:
The adhesive layer is integrated directly into the cover sheet structure, merging the attachment function with the cover sheet itself rather than adding it as a separate component. This combination maintains strong attachment capability while minimizing device complexity by consolidating layers into a single integrated cover sheet assembly.
3Ease of operation
If removable strips with release layers are added, then ease of removal is improved, but manufacturing complexity increases
Solution Approach 1:
The cover sheet is segmented into distinct functional layers including a removable strip with release layer, allowing the strip to be easily removed while the rest of the cover sheet remains attached. This segmentation enables ease of removal for accessing products while the layered structure can be manufactured efficiently through lamination processes that integrate multiple layers in sequence.
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 solution provides a secure, easy-to-attach, and printable cover sheet that can be efficiently secured to the tray, ensuring effective protection and organization of consumer products while allowing for easy removal and reattachment, enhancing usability and convenience.
Implementation Method 1
an adhesive layer, the release layer being removed to allow the adhesive layer to adhere the cover sheet to the tray
Implementation Method 2
The release layer is applied to the upper surface of the second layer (i.e., the surface that faces the lower surface of the first layer) to allow the removable strip of the second layer to be removed easily and cleanly from the adhesive layer
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A cover sheet (1) to be secured to the tray of a container is described. The cover sheet (1) comprises a first layer (2) and a second layer. An adhesive layer is provided between the first and second layers. The first layer (2) has a first cut line (8) that extends across a corner of the cover sheet between a first edge (6a) and a second edge (6b) to define a tab portion (10) of the first layer. The second layer has a second cut line that extends from the first edge (6a) to the second edge (6b) or a third edge (6c) to define a removable strip of the second layer. Removing the removable strip and the adhered tab portion (10) exposes the adhesive layer on a securing portion of the first layer (2) that can be used to secure the cover sheet to the tray.