Multilayer Faceless Labels With Dual Release Layers
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Solution Overview
Problem
Existing adhesive transfer printing systems are inadequate for high-speed labeling operations, as they struggle to efficiently apply preprinted designs or images onto multiple surfaces without adhesion issues between neighboring transfers.
Innovation Solution
A multilayer laminate structure with two release layers and a support layer, where the first release layer has a higher release force than the second, allowing for sequential and continuous application of preformed images or graphics onto articles, utilizing a system with a conveyor and image application apparatus to separate the support layer from the adhesive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single release layer is used between the image and support layer, then the structure is simple and easy to manufacture, but neighboring adhesive transfers may adhere to one another during continuous application
Solution Approach 1:
The single release layer is segmented into two distinct release layers with different release forces. The first release layer (between image and support) has higher release force to prevent adhesion between neighboring transfers, while the second release layer (between adhesive and support) has lower release force to maintain structural integrity during handling and application.
2Ease of operation
If manual rubbing or pressing is used to establish adhesive bond, then the process is simple and flexible, but the labeling speed is slow and cannot meet high-speed operation requirements
Solution Approach 1:
The adhesive layer is designed with self-aligning and self-bonding properties that enable automatic adhesion to the article surface without requiring manual rubbing or pressing operations. The differential release forces allow the adhesive to naturally bond to the article while the support layer remains attached to the first release layer, enabling high-speed automated application.
Solution Approach 2:
The manual mechanical rubbing or pressing action is replaced by a automated separation mechanism where the support layer is separated from the adhesive layer through controlled release forces, allowing for high-speed automated labeling operations without manual intervention.
3Ease of manufacture
If the release force of the first release layer is lower than the second, then the adhesive can easily separate from the support layer, but neighboring adhesive transfers may adhere to one another
Solution Approach 1:
Different regions of the support layer are assigned different release forces through the two release layers. The first release layer (facing the image) has high release force to prevent adhesion between neighboring transfers, while the second release layer (facing the adhesive) has low release force to enable easy separation during application.
4Adaptability or versatility
If multiple adhesive transfers are applied in a stack arrangement, then multiple images can be applied sequentially, but the complexity of the system increases
Solution Approach 1:
The laminate structure is designed as a universal multi-functional system where the differential release layer configuration enables sequential application of multiple adhesive transfers in a single continuous operation. The same two-release-layer structure handles both the separation of individual transfers and the prevention of adhesion between them, eliminating the need for complex multi-step processing systems.
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
Enables efficient and reliable transfer of preformed images or graphics onto multiple surfaces in high-speed labeling operations, preventing adhesion between neighboring transfers and ensuring consistent application.
Implementation Method 1
A layer of adhesive covers the images or graphics. The resulting sheet assembly can include letters, numbers, and/or graphic designs. A user transfers the images or graphics from the support layer to another surface by contacting the adhesive with the surface. After establishing an adhesive bond with the surface, the support layer is removed from the adhesive and images/graphics, which remain adhered to the surface.
Implementation Method 2
Many such sheeted graphic articles utilize a single layer of a release material between the image or graphics and the support layer. Upon removal of the sheet, the release layer promotes separation of the image/graphic from the sheet.
Data Source
AI summary
Multilayer laminates are described which include one or more layers or regions of printed images or graphics captured under an outer adhesive layer. The laminates include two layers of a release coating applied to opposite faces of a support layer. Also described are systems and methods for applying wound rolls of the multilayer laminates to a collection of articles.