Corrugated Box Pull Tab Incisions for Tape Peeling
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Solution Overview
Problem
In corrugated fiberboard boxes with pull tab and push-in portions, peeling the adhesive tape can be difficult due to resistance from the tape's adhesion, especially when the tape is stuck above the pull tab portion, leading to potential tearing of the face liner.
Innovation Solution
The design includes specific incision configurations on the side surface portions, such as wider spacing between second incisions and auxiliary incisions, and varying lengths and orientations of cuts in the face and back liners, to facilitate easier peeling by reducing the force required for pulling the tab and pushing the push-in portion, while guiding the peeling process to avoid resistance from the adhesive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the adhesive tape is stuck above the pull tab portion, then the tape can be applied easily, but the peeling operation becomes difficult due to adhesion resistance
Solution Approach 1:
The side surface portion is divided into multiple incision regions (first incision, second incision, third incision) that segment the peeling path. This segmentation allows the peeling force to be distributed across multiple controlled separation points, reducing the concentration of force and adhesion resistance at any single point, thereby facilitating easier tape removal even when applied above the pull tab portion.
Solution Approach 2:
The incisions act as intermediary elements between the adhesive tape and the side surface portion. These pre-formed separation paths provide controlled weak points that guide the peeling process, allowing the tape to be removed along predetermined lines rather than requiring forceful tearing through the entire bonded area.
2Ease of operation
If the pull tab portion is pulled with sufficient force to peel the adhesive tape, then the tape can be removed, but the face liner may tear
Solution Approach 1:
The incisions are pre-formed in the side surface portion and face liner before the adhesive tape is applied. These preliminary cuts create predetermined separation paths that will guide the peeling process. When peeling occurs, the face liner separates along these pre-established lines rather than experiencing uncontrolled stress concentration, preventing unexpected tearing while still allowing effective tape removal.
Solution Approach 2:
The third incision that extends into the face liner segments the liner material along a controlled path. This segmentation allows the face liner to be separated in a controlled manner during peeling, distributing the stress along the incision line rather than concentrating it, thereby preventing catastrophic tearing of the liner.
3Device complexity
If the incisions are closely spaced, then the structure is simpler, but the peeling force required increases due to greater adhesion resistance
Solution Approach 1:
The incisions are strategically positioned at specific locations on the side surface portion where they can effectively guide the peeling process. The first incision is positioned to start the separation, the second incision continues the path, and the third incision extends into the face liner to complete the controlled separation. This localized positioning optimizes the peeling efficiency without requiring excessive force or complex configurations.
Data Source
AI summary
The pull tab portion is formed as an area surrounded by four solid or broken line-formed incisions. The four incisions include a first incision which is formed as a boundary line of the push-in portion, a pair of second incisions each of which is continuous with the first incision and which are spaced apart from each other in the width direction of the adhesive tape, and a third incision which is continuous with each of the pair of second incisions and functions as a folding line. When those ends of the pair of second incisions which are each located opposite to the push-in portion are called tape-side incision ends, the distance between the two tape-side incision ends in the width direction of the adhesive tape is set greater than the width of the adhesive tape.