Perforated Receipt and Label Roll with Adhesive Segmentation
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Solution Overview
Problem
Existing combined receipt and label rolls have adhesive that can stick to clothing and documents, and the receipt cannot be folded or written on due to a release coating on the front side, limiting their usability.
Innovation Solution
A receipt and label roll design with a longitudinally-extending weakened structure, such as a perforation, divides the web into adhesive and adhesive-free portions, allowing the receipt to be separated and folded without sticking issues, and enabling ink writing on the ink-receptive surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adhesive is applied to the back side of the substrate to enable the combined receipt and label to be attached to items, then the attachment function is improved, but the adhesive can stick to clothing, wallets, documents and other surfaces causing unwanted adhesion
Solution Approach 1:
The web is divided into a first web portion containing adhesive and a second web portion substantially devoid of adhesive, separated by a longitudinal weakened structure. This segmentation allows the adhesive to be confined to specific areas where attachment is needed, while the second web portion remains adhesive-free to prevent unwanted adhesion to clothing and documents.
2Ease of manufacture
If a release coating is disposed on the entire front side of the substrate to prevent adhesive from sticking to the front side when wound on the core, then the winding function is improved, but the receipt cannot be folded without adhesive inside the folded receipt and cannot be written on with ink
Solution Approach 1:
The release coating is applied only to a portion of the front side of the substrate corresponding to the adhesive area on the back side, rather than the entire front side. This segmented approach allows the release coating to prevent adhesive from sticking to the front side during winding, while leaving other areas of the front side free for folding and writing without adhesive interference.
3Ease of operation
If the web is divided into adhesive and adhesive-free portions by a longitudinal weakened structure, then the usability of the permanent receipt is improved, but the device complexity increases
Solution Approach 1:
Different portions of the web are given different properties: the first web portion has adhesive applied to its back side for attachment functionality, while the second web portion is substantially devoid of adhesive for clean receipt functionality. The longitudinal weakened structure creates a clear separation between these functional zones, allowing each portion to perform its specific function optimally.
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 permanent receipt that is adhesive-free, preventing sticking to clothing and documents, and allows for folding and ink writing, enhancing user convenience and functionality.
Implementation Method 1
the printer thermally images a portion of the thermal-sensitive coating layer 26 to provide receipt information on the thermally-imaged portion
Data Source
AI summary
A receipt and label roll comprises a core and a web having a longitudinally-extending axis and wound on the core along the axis. The web includes (i) a substrate having a front side and a back side opposite the front side, (ii) a thermally-sensitive coating disposed on the front side of the substrate, (iii) adhesive disposed on a portion of the back side of the substrate along the web axis, and (iv) a release coating disposed on the front side of the substrate along the web axis to prevent the adhesive from sticking to the front side of the substrate when the web is wound on the core. The web further includes (v) a longitudinal weakened structure extending along a direction parallel to the web axis and dividing the web into a first web portion on which the adhesive is disposed and a second web portion which is substantially devoid of adhesive.