Dual Peel Strength Tape for Fluidic Ejection Cartridge
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Solution Overview
Problem
Fluidic ejection cartridges face issues with incomplete removal of protective tapes from ejection heads during storage and shipping, leading to potential damage and contamination, as existing tapes either peel prematurely due to weak adhesiveness or fail to detach completely due to strong adhesiveness.
Innovation Solution
A fluidic ejection cartridge design featuring a first removable tape with a low peel strength and a second removable tape with higher peel strength, along with a release structure on the side wall, such as scored or ribbed areas, to facilitate complete and damage-free removal of the protective tape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a protective tape with relatively weak adhesive layer is used, then the protective tape can be easily removed from the ejection head, but the protective tape may peel and fall off prematurely during packaging and conveying
Solution Approach 1:
The protective tape system is segmented into two distinct tapes: a first protective tape with weak adhesive for easy removal, and a second protective tape with strong adhesive for secure attachment during transport. This segmentation allows each tape to fulfill its specific function without compromise.
Solution Approach 2:
The first protective tape acts as an intermediary between the ejection head and the second protective tape. It provides a controlled interface that allows easy removal while maintaining secure protection during transport through its interaction with the second tape.
2Reliability
If a protective tape with greater adhesiveness is used, then the protective tape will not peel off prematurely during packaging and conveying, but the protective tape may detach from the pull tape and remain on the ejection head preventing proper operation
Solution Approach 1:
The protective tape system is divided into two tapes with different adhesive properties. The first tape has weak adhesive for complete removal, while the second tape has strong adhesive for secure transport protection. This segmentation resolves the contradiction between strong adhesion and easy removal.
Solution Approach 2:
Different adhesive strengths are applied locally to different functional requirements: the first tape provides weak adhesion where easy removal is needed, while the second tape provides strong adhesion where secure attachment is needed during transport.
3Object-affected harmful factors
If the protective tape has sufficient adhesiveness to prevent premature peeling, then the ejection head is protected during transport, but the tape may not detach completely from the ejection head upon removal
Solution Approach 1:
The protective system is segmented into two tapes: the first tape with weak adhesive that removes completely without residue, and the second tape with strong adhesive that provides transport protection. This eliminates both premature peeling and residual contamination issues.
Solution Approach 2:
The first protective tape serves as an intermediary layer that interfaces with the ejection head. Its weak adhesive ensures complete removal without residue, while the second tape provides the strong adhesion needed for transport protection.
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 ensures complete removal of the protective tape without damaging the ejection head, preventing residual adhesive and contamination, while maintaining sufficient adhesiveness to prevent premature peeling.
Implementation Method 1
attached to the ejection head by a first adhesive having a first peel strength
Implementation Method 2
attached to a portion of the first removable tape by a second adhesive having a second peel strength, wherein the second peel strength is greater than the first peel strength
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A fluidic ejection cartridge and a fluid ejection device thereof. The fluidic ejection cartridge (10) includes a cartridge body for fluid having a first end (30) and a second end (32) opposite to the first end (30), and having a plurality of side walls (34, 38) attached to the first and second ends (30, 32); an ejection head (20) disposed on the second end (32) of the cartridge body; a release structure (60) configured on one of the side walls (34); a first removable tape (12) attached to the release structure (60) on the side wall (34) and attached to the ejection head (20) by a first adhesive having a first peel strength, and a second removable tape (14) attached to a portion of the first removable tape (12) by a second adhesive having a second peel strength, wherein the second peel strength is greater than the first peel strength.