Pressure-Sensitive Label With Patterned Adhesive
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Solution Overview
Problem
Conventional pressure-sensitive labels require a multi-step, multi-location production process, involve excessive materials and costs, and face issues with recyclability, damage to ink layers, and inefficiencies in application, particularly on contoured surfaces and with metallic inks.
Innovation Solution
A pressure-sensitive label construction with reduced layers, eliminating the need for a separate release layer between the carrier and adhesive, allowing the printable layer to be applied in a pattern matching the label design, and positioning the ink layer between the carrier and adhesive for enhanced protection and ease of application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pressure-sensitive label construction with multiple layers (carrier, release layer, adhesive layer, face stock) is used, then the label provides adequate adhesion and transfer, but the production process requires multiple steps and locations, increasing manufacturing time and complexity
Solution Approach 1:
The patent combines the adhesive layer and face stock into a single integrated transfer portion that is applied as one unit to the carrier. This merging eliminates the need for separate release layer and reduces the number of lamination steps required in conventional multi-layer constructions, thereby simplifying the production process while maintaining adhesion and transfer performance
Solution Approach 2:
The label is segmented into two main functional portions: a support portion (carrier) and a transfer portion (adhesive layer with face stock). This segmentation allows the transfer portion to be prepared separately and then applied to the carrier, enabling single-location production and reducing manufacturing complexity while ensuring reliable adhesion
2Adaptability or versatility
If the face stock is applied or laminated to the adhesive layer sequentially after the adhesive layer is laid down, then the label construction allows for printing and finishing processes, but the multi-step process lengthens manufacturing time
Solution Approach 1:
The adhesive layer is prepared with the face stock already integrated in a softened or molten state, allowing the entire transfer portion to be applied to the carrier in one action. This preliminary integration eliminates sequential lamination steps, significantly increasing manufacturing speed while preserving the ability to perform printing and finishing operations on the face stock
3Ease of operation
If a release layer is used between the carrier and adhesive layer, then the transfer portion can peel away from the carrier during label application, but additional materials and costs are required
Solution Approach 1:
The release layer is extracted and eliminated from the label construction. Instead of using a separate release layer, the patent relies on the controlled adhesion properties of the adhesive layer itself and the mechanical action of pressing and peeling during application. This extraction reduces material usage and costs while maintaining ease of label application through the natural peeling action of the transfer portion from the carrier
4Adaptability or versatility
If the ink layer is applied on the face stock after the base pressure sensitive label stock is acquired, then the label design can be customized, but the multi-location process increases manufacturing time
Solution Approach 1:
The printing operation is merged with the label production process at a single location. The transfer portion with face stock is prepared, printed with custom designs, and then applied to the carrier in one continuous process flow. This merging eliminates the need to acquire base label stock from external suppliers and perform separate printing operations, reducing manufacturing time while preserving design customization capabilities
5Illumination intensity
If the ink layer is positioned on the outer surface of the label, then the label decoration is visible, but the ink layer is susceptible to scuffing or damage
Solution Approach 1:
The conventional layer arrangement is inverted: instead of having the ink layer on the outer surface of the face stock, the patent positions the ink layer between the face stock and the adhesive layer. This inversion protects the ink layer from external damage while maintaining label decoration visibility through the face stock, thereby improving ink layer durability without sacrificing aesthetic appearance
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
This configuration reduces manufacturing time, material waste, and costs, increases recyclability, and protects the ink layer from damage, enabling easier application to complex surfaces while allowing the use of metallic inks without additional protective layers.
Implementation Method 1
Pressure sensitive labels are multi-layered constructions that include a pressure-sensitive adhesive, and are used to label articles by applying pressure to the label when it is in contact with an article to adhere the label to the article via the pressure-sensitive adhesive
Data Source
AI summary
A pressure sensitive label and method for preparing same, the pressure sensitive label comprising: (a) a support portion, said support portion including at least a carrier layer; and (b) a transfer portion over said support portion for transfer of the transfer portion from the support portion to an article upon application of pressure to the transfer portion while the transfer portion is in contact with the article, said transfer portion including at least a patterned adhesive layer in confronting relationship with a surface of the carrier layer, wherein the patterned adhesive layer confronts less than substantially the entire surface of the carrier layer.