Label Sheet Assembly With Removable Carrier Strip
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Solution Overview
Problem
Existing label application systems for index dividers are time-consuming, prone to errors, and difficult to align, with previous solutions like precut labels on carrier strips being flimsy and sticky, and facestock with ties leaving rough edges and making printing irregular.
Innovation Solution
A label sheet assembly comprising a carrier sheet, facestock sheet, and liner sheet with pressure-sensitive adhesives, where cut lines define labels and a carrier strip, allowing for simultaneous application and detachment from the strip, maintaining uniform thickness and avoiding printer issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If precut labels on carrier strips are used, then label application is simplified, but the carrier strip becomes flimsy and difficult to align
Solution Approach 1:
The label sheet is divided into multiple rows with labels in odd-numbered rows separated from even-numbered rows by a carrier strip. This segmentation allows the carrier strip to provide structural support for alignment while being removed after application, resolving the contradiction between operational simplicity and alignment precision.
Solution Approach 2:
The carrier strip acts as an intermediary element that temporarily holds labels in place during application and removal. It provides the necessary structural rigidity for alignment but is subsequently removed, preventing it from interfering with the final label placement precision.
2Ease of operation
If carrier strip is used to hold labels, then labels are easier to align, but the carrier strip becomes sticky and may stick to unwanted surfaces
Solution Approach 1:
The carrier strip is designed with localized adhesive properties only in specific areas where labels are applied, while other areas remain non-sticky. This local quality approach provides necessary alignment support without causing unwanted adhesion to surrounding surfaces.
Solution Approach 2:
The carrier strip is extracted and removed from the final label assembly after serving its alignment function. This extraction eliminates the harmful stickiness issue while preserving the alignment benefits during the application process.
3Ease of operation
If facestock with ties is used, then labels can be held during alignment, but ties leave rough edges and make printing irregular
Solution Approach 1:
The ties are completely extracted from the final label assembly. Instead of using ties to hold labels during alignment, the patent uses a carrier strip system that is subsequently removed, eliminating the source of rough edges and printing irregularities.
Solution Approach 2:
The label sheet is segmented into odd and even rows with carrier strips between them, allowing labels to be held during alignment without ties. This segmentation enables a cleaner final product suitable for printing while maintaining operational ease during application.
4Manufacturing precision
If labels are applied individually, then alignment can be controlled, but the process becomes time-consuming and error-prone
Solution Approach 1:
Multiple labels in odd-numbered rows are merged and separated from even-numbered rows by the carrier strip. This merging allows multiple labels to be applied simultaneously in a controlled manner, dramatically increasing application speed while maintaining alignment precision through the carrier strip's structural support.
Solution Approach 2:
The carrier strip is pre-positioned between odd and even rows before label application. This preliminary action establishes the alignment framework in advance, allowing multiple labels to be applied quickly and accurately without individual alignment control for each label.
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
Facilitates fast, efficient, and accurate alignment of labels on index dividers, ensuring smooth printer passage and eliminating issues of irregular sizes and adhesive residue, allowing for multipass printing without waste.
Implementation Method 1
The facestock sheet is releasably attached to one side of the carrier sheet with a layer of pressure sensitive adhesive
Data Source
AI summary
A label sheet assembly including a liner sheet, a carrier sheet, and a facestock sheet. The facestock sheet includes cut lines defining labels and cut lines defining at least a portion of a carrier strip. The carrier sheet can include cut lines defining at least a portion of the carrier strip. The carrier strip can be removed from the label sheet assembly to expose at least a portion of a layer of pressure sensitive adhesive on the labels. The label sheet assembly has a uniform thickness in an area that includes the carrier strip and the labels.