Adhesive Tape for Battery Electrodes with Central Coating
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Solution Overview
Problem
Conventional adhesive tapes used in secondary battery electrode manufacturing often cause adhesive leakage during processing, leading to production of faulty electrodes, equipment damage, and reduced efficiency due to frequent cleaning and manual handling.
Innovation Solution
An adhesive tape with a synthetic resin base film and an acryl-based adhesive layer coated only on the central portion, accompanied by a color printed layer for sensor detection and a release sheet, to prevent adhesive leakage and enable automated cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is coated on the entire lower surface of the adhesive tape, then adhesive bonding strength is improved, but adhesive leakage occurs during processing
Solution Approach 1:
The adhesive is coated only on the central portion of the lower surface of the adhesive tape, leaving the peripheral regions without adhesive coating. This local differentiation allows the central area to provide strong bonding while the peripheral areas prevent adhesive leakage during processing operations.
2Object-generated harmful factors
If adhesive leakage is prevented by reducing adhesive coating area, then adhesive leakage is reduced, but bonding strength decreases
Solution Approach 1:
The adhesive coating is strategically placed only in the central portion where bonding is required, while peripheral regions remain adhesive-free to prevent leakage. This localized approach optimizes both bonding strength and leakage prevention simultaneously.
3Reliability
If conventional adhesive tape is used, then electrode connection is achieved, but production efficiency decreases due to frequent cleaning and manual handling
Solution Approach 1:
A color printed layer is added to the adhesive tape to enable sensor detection. This allows automated systems to identify the adhesive tape position and perform cutting operations automatically, eliminating manual handling and frequent cleaning requirements while maintaining reliable electrode connection.
4Productivity
If adhesive tape is used to connect electrode substrate rolls, then continuous electrode production is enabled, but equipment breakdown occurs due to adhesive adhesion to processing devices
Solution Approach 1:
By limiting adhesive coating to the central portion only, the peripheral regions that contact processing equipment during winding and cutting operations remain adhesive-free. This prevents adhesive from adhering to equipment surfaces, maintaining equipment functionality while enabling continuous production.
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
Prevents adhesive leakage during processing, minimizes waste, and enhances production efficiency by allowing automated cutting of the adhesive tape, reducing manual handling and equipment maintenance.
Implementation Method 1
an adhesive layer which is formed on a lower surface of the base film and is configured such that an adhesive is coated on the central portion of the base film except peripheries of the base film
Data Source
AI summary
Disclosed herein is an adhesive tape for connecting secondary battery electrodes which prevents an adhesive from leaking to electrodes during electrode processing processes even though the adhesive tape for connecting the electrodes is adhered or which prevents the adhesive from leaking to the electrodes wound near the adhesive tape in a case that the electrode substrates are wound in a roll type in order to continuously connect electrode substrates of the front and rear ends during a secondary battery electrode manufacturing process, thereby preventing the electrodes from being damaged and from being unacceptable. The adhesive tape for connecting secondary battery electrodes comprises: a base film formed in a thin plate type and made of a synthetic resin; and an adhesive layer formed on the lower surface of the base film by applying an adhesive to the central portion of the base film, except the left and right peripheries.