Offset Tearable Lines for Separable Label Assembly
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Solution Overview
Problem
Existing self-adhesive label sheets are difficult to remove efficiently, particularly for large mailings, as they require manual bending to separate labels from the backing, which can be cumbersome and inefficient.
Innovation Solution
A label assembly with a face sheet, a back sheet, and an adhesive layer, featuring offset tearable lines of separation on both sheets, allowing for angled tearing to expose label edges for easy removal, facilitating the separation of labels without bending the sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual bending is used to separate labels from the backing sheet, then labels can be removed from the sheet, but the process becomes cumbersome and inefficient for large mailings
Solution Approach 1:
The label assembly is divided into multiple segments through the matrix structure and tearable lines. The face sheet is segmented into individual label portions separated by matrix regions, and the back sheet is segmented with tearable lines that correspond to label boundaries. This segmentation allows users to easily separate and remove individual labels or groups of labels by tearing along predefined lines, eliminating the need for manual bending and significantly improving removal efficiency for large mailings.
2Ease of operation
If the label sheet is bent to separate labels, then labels can be removed, but adhesive may be exposed and label integrity compromised
Solution Approach 1:
The matrix structure extracts and removes the adhesive layer from the areas surrounding each label, creating clean separation zones. The tearable lines are positioned to separate only the non-adhesive matrix portions from the label areas, allowing label separation without exposing or damaging the adhesive. This extraction approach maintains label integrity while enabling easy separation.
Solution Approach 2:
The tearable lines are pre-formed in the back sheet during manufacturing, positioned to align with label boundaries. This preliminary action prepares the separation path in advance, allowing users to simply tear along predetermined lines without needing to bend or manipulate the sheet. The preliminary positioning ensures that tearing occurs only in safe zones away from adhesive, preventing label damage while maintaining integrity.
3Ease of operation
If offset tearable lines are used on both face sheet and back sheet, then label edges are exposed for easy removal, but the structure becomes more complex
Solution Approach 1:
The offset tearable lines on the face sheet and back sheet are merged to work together as an integrated separation system. The face sheet tearable lines and back sheet tearable lines are offset relative to each other, creating a stepped separation pattern that exposes label edges. When users tear along both sets of lines, the combined action cleanly separates labels from the backing while maintaining structural integrity. This merging of two offset line systems achieves effective label removal without requiring overly complex individual components.
Data Source
AI summary
A label assembly including a face sheet, a back sheet, and a layer of an adhesive positioned between the face sheet and the back sheet. A separation line divides the label assembly into at least two portions. The separation line is formed by a first tearable line of separation extending across the back sheet and a second tearable line of separation extending across the face sheet. The first tearable line of separation is offset with respect to the second tearable line of separation, and at least one of the first and second tearable lines of separation includes an angled portion extending at an angle to an other of the at least one of the first and second tearable lines of separation.