Linerless Thermosensitive Recording Sheet Package for Roll Stability
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Solution Overview
Problem
Linerless thermosensitive recording sheets face issues with roll shape stability during long-term storage, particularly due to humidity-induced winding misalignment and deformation, which affects their usability in printers.
Innovation Solution
A linerless thermosensitive recording body package is developed with a specific peel force range of 50 mN/50 mm to 250 mN/50 mm and a water content of 4.5% to 6.5%, sealed in a packaging material with thermal fusion for air or water blocking, using pillow packaging to maintain roll shape stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the releasability is reduced to prevent paper jam during conveyance, then the printer reliability is improved, but the roll shape stability deteriorates and the roll becomes easily deformable
Solution Approach 1:
The invention changes the physical-chemical parameters of the recording sheet by controlling water content (4.5-6.5%) and peel force (50-250 mN/50mm) to simultaneously achieve both low releasability for paper jam prevention and adequate roll shape stability for long-term storage
2Reliability
If the releasability is reduced to mitigate paper jam, then the conveyance reliability is improved, but the roll becomes unable to maintain circular shape in low-humidity environment
Solution Approach 1:
The invention adjusts the water content parameter to a specific range (4.5-6.5%) that provides sufficient moisture to maintain hydrogen bonding and roll shape in low-humidity environments, while keeping the peel force low enough to prevent paper jam during conveyance
3Ease of operation
If the releasability is reduced to ease handling, then the ease of operation is improved, but the roll comes out of winding alignment and tapers in high-humidity environment
Solution Approach 1:
The invention optimizes the water content to (4.5-6.5%) to maintain adequate inter-layer adhesion through hydrogen bonding in high-humidity environments, preventing the roll from coming out of winding alignment or tapering, while maintaining low peel force (50-250 mN/50mm) for ease of handling
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 package ensures excellent roll shape stability during long-term storage and reduces paper jam occurrences during printer conveyance, maintaining printer compatibility.
Implementation Method 1
An opening of the packaging material is sealed by thermal fusing for air or water blocking
Implementation Method 2
a roll of a linerless thermosensitive recording sheet... The linerless thermosensitive recording sheet includes a support, a thermosensitive color developing layer provided over one surface of the support, a release layer over the thermosensitive color developing layer, and an adhesive layer provided over an opposite surface of the support
Data Source
AI summary
Provided is a linerless thermosensitive recording body package, a roll of a linerless thermosensitive recording sheet being packaged in the linerless thermosensitive recording body package, the linerless thermosensitive recording sheet including a support, a thermosensitive color developing layer over one surface of the support, a release layer over the thermosensitive color developing layer, and an adhesive layer over an opposite surface of the support, the linerless thermosensitive recording sheet being wound in roll shape in a manner that the adhesive layer comes to an internal side of the support, wherein a peel force for peeling the linerless thermosensitive recording sheet from the roll is 50 mN/50 mm or greater but 250 mN/50 mm or less, wherein a water content of the linerless thermosensitive recording sheet is 4.5% or higher but 6.5% or lower, the roll of the linerless thermosensitive recording sheet being seal-packaged in the linerless thermosensitive recording body package.