Tape System with Longitudinal Filament for Clean Film Slitting
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Solution Overview
Problem
Existing methods for cutting adhesive films, such as stone guard films, on vehicle surfaces often result in jagged edges and inadequate cutting due to the films' adhesion characteristics, especially when applied with a wet surface to enhance adhesion.
Innovation Solution
A tape system comprising a first extensible tape body with a longitudinally extending filament and a second tape body that bridges over the filament, allowing the filament to tear through the second tape body while maintaining attachment to the surface, reducing film bunching and edge irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wet surface is used to apply the film to enhance adhesion, then the adhesion of the film is improved, but the cutting quality deteriorates with jagged edges and inadequate slitting
Solution Approach 1:
The patent introduces a second tape body as an intermediary element between the filament and the film. This second tape body provides a stable substrate that the filament can tear through cleanly, mediating the cutting process to produce smooth edges even when the film is applied to a wet surface with enhanced adhesion.
2Productivity
If a filament is used to cut the film, then the cutting action is achieved, but the film bunches and creates edge irregularities
Solution Approach 1:
The patent changes the physical parameters of the cutting system by introducing a second tape body with specific width and adhesive properties. This second tape body is arranged to bridge to each side of the filament, creating a stable platform that prevents film bunching during the cutting process and ensures regular edge formation.
3Device complexity
If the filament is positioned at the edge of the tape body, then the cutting is simpler, but the tape body cannot be bent properly
Solution Approach 1:
The patent segments the tape body into two separate components: a first tape body that carries the filament and can be bent as needed, and a second tape body that provides the stable cutting surface. This segmentation allows the first tape body to be positioned and bent appropriately while the second tape body maintains the filament's structural support for clean cutting.
Data Source
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AI summary
The present invention relates to a tape comprising a tape body (11) having a front surface (12), a rear surface (13), a first longitudinal side edge (14) and a second longitudinal side edge (14A), the tape body (11) having an adhesive (15) on the rear surface (13) for attachment to an object (17), the tape body (11) having a first and a second longitudinally extending filament (18, 19) attached thereto, wherein the first and second filaments (18, 19) are arranged such that the second filament (19) when pulled passes through a slot (23) formed by pulling the first filament (18) through the tape body (11), wherein the first and second filaments (18, 19) are attached to the tape body (11) at a position thereon spaced from both side edges (14, 14A) of the tape (10) to a distance (D) which allows bending of the tape (10) in a first side to side direction (21) by extension of the tape (10) along the second longitudinal side edge (14A) and in a second side to side direction (22) by extension of the tape (10) along the first longitudinal side edge (14).