Adhesive Tape Reinforcing Layer for Flying Roll Change Tearing
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Solution Overview
Problem
During the flying roll change process in paper mills, the second adhesive mass layer of the splice cleaving tape may not fully adhere to the new web, leading to tearing and contamination, resulting in increased cleaning efforts and machine pollution.
Innovation Solution
Incorporating a reinforcing layer between the second adhesive mass layer and the cleavage system to increase the tear force and prevent tearing, which is achieved by applying a polymeric or metal-based material that enhances the adhesion and stability of the tape, ensuring reliable unwinding and minimizing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the second adhesive mass layer is applied to the cleavage system without a reinforcing layer, then the adhesive tape can be manufactured with simpler structure and lower cost, but the tear force of the cleavage system on the second adhesive mass layer is insufficient, leading to tearing and contamination during flying roll change
Solution Approach 1:
The adhesive tape is constructed as a composite structure with a carrier layer, first adhesive mass layer, second adhesive mass layer, and reinforcing layer. The reinforcing layer is integrated between the second adhesive mass layer and the cleavage system, creating a multi-layer composite that combines the adhesive properties of the adhesive mass layers with the mechanical strength of the reinforcing layer, thereby preventing tearing while maintaining structural integrity
Solution Approach 2:
The reinforcing layer is strategically positioned only in the region where it is most needed - between the second adhesive mass layer and the cleavage system. This localized reinforcement provides enhanced tear force precisely at the critical interface during the flying roll change process, without unnecessarily complicating the entire adhesive tape structure or adding weight to non-critical areas
2Ease of operation
If the second adhesive mass layer does not fully adhere to the new web, then the adhesive tape can be applied more easily, but the cleavage system may tear and contaminate the machine, increasing cleaning efforts
Solution Approach 1:
The reinforcing layer is incorporated into the adhesive tape structure before application, providing pre-existing mechanical support and tear resistance to the second adhesive mass layer. This beforehand reinforcement ensures that even if adhesion is not perfect, the cleavage system will not tear or contaminate the machine during the flying roll change process, as the reinforcing layer has already cushioned against potential tearing forces
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 reinforcing layer significantly increases the tear strength of the adhesive tape, preventing tearing and contamination, allowing for trouble-free unwinding and reducing machine pollution by ensuring the cleavage system opens reliably without tearing, thus maintaining a clean machine environment.
Implementation Method 1
a reinforcing layer VS1 which is applied on the surface of the second adhesive mass layer K2 and which increases the tear force of the part of the cleavage system K4 remaining after the columns on the second adhesive mass layer K2
Data Source
Figure 1~2
Figure 3~4a
Figure 4b
AI summary
The invention relates to an adhesive tape (K) for the flying roll change of flat web material (RB) wound on rolls (R, B), comprising a carrier layer (K3) having a first surface (K31) and a second surface (K32) opposite the first surface (K31), a first adhesive layer (K1) which is arranged directly or indirectly at least partially on the first surface (K31) of the carrier layer (K3), a second adhesive layer (K2) which is arranged indirectly on at least a surface area of the second surface (K32) of the carrier layer (K3), and at least one predetermined breaking surface for splitting the adhesive tape (K) in a planar manner, wherein the predetermined breaking surface is formed as part of a splitting system (K4) between the carrier layer (K3) and the second adhesive layer (K2), characterized in that a reinforcing layer (VS1) is applied between the second adhesive layer (K2) and the splitting system (K4).which increases the tensile strength of the part (K4b) of the splitting system (K4) remaining on the second adhesive layer (K2) after splitting, along the direction of travel of the adhesive tape (K).