Splitable Adhesive Tape for Flying Reel Change Splicing
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Solution Overview
Problem
Existing adhesive tapes for flying reel changes in paper or plastic film finishing machines require complex application processes, including folding and repositioning, which can lead to inconsistent adhesion and increased risk of web material rupture during high-speed splicing, resulting in machine downtimes.
Innovation Solution
A double-sided adhesive tape with a splitable layer and a fixation layer, applied directly to the edge of the new web material, featuring a non-adhesive region that splits under radial force, ensuring secure adhesion during acceleration and easy separation during splicing, providing a larger adhesive surface area for reliable bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double-sided adhesive tape is used for flying reel change, then the splicing connection between new and old web material is achieved, but the application process becomes complex requiring folding and repositioning which increases the risk of web material rupture
Solution Approach 1:
The adhesive tape is segmented into two distinct functional layers: a first self-adhesive layer on the carrier for bonding to the web material, and a second self-adhesive layer on the opposite side of the carrier for bonding to the reel surface. This segmentation allows each layer to be optimized independently and simplifies the application process by eliminating the need for folding and repositioning operations.
Solution Approach 2:
The adhesive tape is pre-configured with both self-adhesive layers positioned on opposite sides of the carrier layer before application. This preliminary arrangement of adhesive surfaces eliminates the need for complex folding and repositioning operations during the splicing process, reducing application complexity while maintaining reliable bonding.
2Strength
If the adhesive strength between top layer and second layer is too high, then secure fixation during acceleration is achieved, but web material rupture occurs during splicing
Solution Approach 1:
The adhesive tape provides different adhesive properties at different locations: the first self-adhesive layer bonds to the web material with controlled strength allowing separation during splicing, while the second self-adhesive layer bonds to the reel surface with sufficient strength to prevent unwinding during acceleration. This local differentiation of adhesive quality resolves the contradiction between secure fixation and easy separation.
3Ease of operation
If a complex folding and repositioning process is used to apply the tape, then the tape can be positioned on the web material, but the application time increases and adhesion consistency decreases
Solution Approach 1:
The adhesive tape is pre-configured with both self-adhesive layers positioned on opposite sides of the carrier layer before application. This preliminary arrangement of adhesive surfaces eliminates the need for complex folding and repositioning operations during the splicing process, reducing application time while maintaining consistent adhesion through proper pre-positioning of adhesive surfaces.
4Reliability
If the adhesive surface area is increased for reliable bonding, then splicing reliability improves, but the tape complexity and difficulty of proper application increases
Solution Approach 1:
The adhesive bonding function is segmented across two separate self-adhesive layers positioned on opposite sides of the carrier. Each layer provides a substantial adhesive surface area for reliable bonding to its respective substrate (web material or reel surface), while the carrier layer organizes these surfaces in a simple planar structure that is easy to apply without increasing overall tape complexity.
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 simplifies the application process, reduces the risk of web material rupture, allows for higher rotation speeds, and increases output by ensuring consistent adhesion and easy splicing, enabling faster and more reliable flying reel changes.
Implementation Method 1
the first self-adhesive layer (120) is adhered to the web material (310) being unwound
Implementation Method 2
the second self-adhesive layer (130) is adhered to the topmost web layer (302)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An adhesive tape (10) for use in flying reel change applications comprising a double-sided adhesive tape (100) and a splitable tape (200). In order to obtain a splicing tape which provides for easy and reliable use without having to adhere it to the backside of a topmost layer of web material, at least a third self-adhesive layer (230) of the splitable tape (200) is narrower than the fixation layer (220) of the splitable tape (200), such that an essentially non-adhesive region (240) is formed on the lower surface (212) of the splitable layer (210).