Layered Adhesive Construction with Interliner for Stable Spooling
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Solution Overview
Problem
The existing methods for winding adhesive tapes into spools are inefficient, especially for tapes with pronounced side edge stickiness, as they require additional logistical efforts and slower spooling speeds due to the need for separate interliner lamination and trimming, increasing costs and complexity.
Innovation Solution
A layered construction comprising an adhesive tape with an outer layer of pressure-sensitive adhesive, a release liner, and an interliner with an adhesively furnished side facing away from the tape, allowing for laminating the interliner onto the tape before slitting and simultaneous winding to form a spool, eliminating the need for separate lamination and reducing sticking issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the interliner is laminated onto the adhesive tape after slitting and trimming, then the side edge stickiness is prevented, but the spooling speed decreases and operational complexity increases
Solution Approach 1:
The interliner is laminated onto the adhesive tape before slitting and trimming operations. This preliminary action ensures that the interliner is already in place to prevent side edge sticking during the subsequent winding process, eliminating the need for post-slitting lamination and thereby maintaining high spooling speeds without operational complexity increases
2Reliability
If the interliner is laminated onto the adhesive tape after slitting and trimming, then the side edge stickiness is prevented, but the manufacturing complexity and costs increase
Solution Approach 1:
The lamination of the interliner onto the adhesive tape is performed before slitting and trimming, consolidating operations into fewer processing stations. This eliminates the need for separate post-slitting lamination equipment and reduces the overall complexity of the manufacturing system while ensuring reliable prevention of side edge sticking
3Reliability
If the interliner protrudes at the sides to prevent sticking, then side edge stickiness is prevented, but the interliner cannot be laminated ahead of slitting
Solution Approach 1:
The interliner is laminated onto the adhesive tape before slitting and trimming operations. This preliminary action allows the interliner to be securely attached during the winding process, preventing side edge sticking without requiring the interliner to protrude beyond the tape edges, thereby simplifying the manufacturing process timing
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 solution enables stable spooling with reduced effort and cost, allowing for gentle winding without squeezing or sticking, even under low tension, and maintains dimensional stability, thus improving the efficiency and cost-effectiveness of the spooling process.
Implementation Method 1
an interliner (IL) lying on the side of the adhesive tape opposite the outer layer of pressure-sensitive adhesive (PSA-A), at least the side of the interliner facing away from the adhesive tape being adhesively furnished
Data Source
AI summary
Layer constructions allow an adhesive tape to be wound to form a spool simply and with relatively uncomplicated apparatus. At least one layered construction comprises: an adhesive tape comprising at least one outer layer of pressure-sensitive adhesive; a release liner lying on the outer layer of pressure-sensitive adhesive; and an interliner lying on the side of the adhesive tape opposite the outer layer of pressure-sensitive adhesive, at least the side of the interliner facing away from the adhesive tape being adhesively furnished, wherein all layers of the layered construction finish substantially flush with respect to each other. At least one spool comprising a spool core and the at least one layered construction wound crosswise in a plurality of plies on said core, and a method for producing the at least one spool are also disclosed.