Easy-Open Media Wrapper With Integrated Weakness Lines
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Solution Overview
Problem
Conventional packaging for stackable media, such as reams of paper, requires additional features like tear strips or pull tabs for opening, which complicates the manufacturing process and can disrupt the orientation of the contents, leading to inefficiencies and potential damage.
Innovation Solution
A media wrapper with a built-in line of weakness, comprising a first, second, and connecting line of weakness portion, configured to facilitate controlled tearing without external opening features, allowing for easy access while maintaining the package's orientation and reducing manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tear strip or pull tab is added to facilitate opening, then ease of operation is improved, but device complexity and manufacturing complexity increase
Solution Approach 1:
The patent merges the opening function into the wrapper structure itself by integrating a line of weakness directly into the wrapper material. This eliminates the need for separate tear strips or pull tabs, combining the sealing and opening functions into a single integrated structure, thereby reducing device complexity while maintaining ease of operation.
Solution Approach 2:
The line of weakness is pre-formed within the wrapper during manufacturing, creating a predetermined tear path that guides the opening process. This preliminary preparation of the opening mechanism eliminates the need for additional opening features and simplifies both the structure and manufacturing process.
2Ease of operation
If conventional opening methods are used, then ease of operation is improved with tear strips, but the orientation of contents is disrupted
Solution Approach 1:
The line of weakness is strategically positioned and oriented within the wrapper to correspond with the fold lines and package geometry. This localized design ensures that tearing occurs along predetermined paths that preserve the overall package structure and content orientation, rather than disrupting the arrangement of items inside.
3Ease of operation
If additional opening features are added, then ease of operation is improved, but manufacturing cost increases
Solution Approach 1:
By combining the opening function into the wrapper structure itself through the integrated line of weakness, the patent eliminates the need for separate opening features like tear strips or pull tabs. This merging reduces material usage and manufacturing steps, thereby lowering production costs while maintaining ease of opening.
Solution Approach 2:
The wrapper structure itself provides the opening mechanism through the built-in line of weakness, making the package self-sufficient. The wrapper design inherently includes the opening function, eliminating the need for additional components and reducing manufacturing complexity and cost.
Data Source
AI summary
A structure is described for forming a wrapper, e.g., for print media, where the structure includes lines of weakness for facilitating a user's tearing of the wrapper to access the contents. The lines of weakness may include a first line of weakness that extends along a fold line of an envelope fold forming one of the front or rear or right sides of the wrapped package, as well as a second line of weakness that extends substantially perpendicularly to the respective longitudinal fold lines and a third line of weakness that extends between the first line of weakness and the second line of weakness and is disposed at a non-zero angle with respect to each. In this way, a tear initiated near the first line of weakness and may be propagated along the other lines of weakness to create an opening for accessing the product.