Half-Cut Double-Sided Tape Processing Without Blade Adhesive Contact
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Solution Overview
Problem
Conventional methods for manufacturing half-cut double-sided tape face issues such as mechanical failure due to direct contact between the die cut roll blade and adhesive, and difficulties in accurately transferring adhesive tape pieces to the release liner without residue.
Innovation Solution
A method involving a processing protection layer is applied to the adhesive surface before half-cutting, using a wider protect release paper tape to cover the adhesive, allowing half-cutting without direct contact with the die cut roll, and enabling easy peeling and winding of the tape pieces on the original release liner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the die cut roll blade directly contacts the adhesive tape for half-cutting, then the cutting operation can be performed, but mechanical failure occurs due to adhesive contamination of the blade
Solution Approach 1:
A release liner is introduced as an intermediary layer between the die cut roll blade and the adhesive tape. The blade contacts the release liner instead of the adhesive, preventing contamination and mechanical failure while still enabling effective cutting of the adhesive tape through the liner.
2Extent of automation
If the adhesive tape is cut into strip shape and transferred to release liner, then automated application becomes possible, but transfer accuracy and residue-free positioning becomes difficult
Solution Approach 1:
The adhesive tape is pre-cut into individual strip segments on the release liner before application. This preliminary cutting action enables automated picking and placing operations while the release liner maintains precise positioning of each strip, eliminating transfer accuracy issues and residue problems.
3Quantity of substance
If continuous double-sided tape is used, then material utilization is efficient, but cutting and peeling operations become complex and difficult to control
Solution Approach 1:
The continuous adhesive tape is segmented into individual strip segments while remaining on the release liner. This segmentation provides discrete, easily handled pieces for automated application without requiring complex cutting and peeling mechanisms, simplifying the overall system while maintaining material efficiency.
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
This approach prevents adhesive contamination of the die cut roll, ensures accurate half-cutting, and facilitates easy peeling and winding, producing high-quality half-cut double-sided tape without the need for special materials or machines.
Implementation Method 1
If the release agent is applied to both surfaces of the release liner, the release liner may be one sheet
Implementation Method 2
an adhesive layer is provided on both surfaces of a base material layer
Data Source
AI summary
To provide a half-cut double-sided tape from a double-sided tape with a release-liner by means of a simple process without contacting a cutter blade directly to an adhesive layer when making the half cuts in the half-cut process. A processing protection layer formation step of feeding a protect release paper tape having the release surface to the double-sided tape to form a processing protection layer on the double-sided tape with the release liner; a half-cut step of continuously performing half-cut together with the processing protection layer and the double-sided tape on the release liner while leaving only the release liner, and making a number of the double-sided tape pieces of proper length are held on the release liner; a half-cut double-sided tape winding step of winding the half-cut double-sided tape with the release liner while peeling off the processing protection layer. A cut trace has a fully cut region in the width direction of the double-sided tape on the release liner and a non-cut region in the width direction of the protect release paper tape, so that the peeling is facilitated.