Selective Pressure-Sensitive Adhesive Label Manufacturing Process
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Solution Overview
Problem
Current adhesive label manufacturing processes are cumbersome and require multiple steps, involving complete adhesive coating followed by selective deadening agent application, which is inefficient and lacks precision in achieving selective adhesive application.
Innovation Solution
A process where a releasable backing is used with a kill material applied selectively, followed by continuous adhesive dispensing over the kill areas and gaps, curing, and then applying face stock to create a selective pressure-sensitive adhesive label stock with a non-stick surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If selective adhesive application is achieved by complete adhesive coating followed by deadening agent application, then adhesive coverage is ensured, but process complexity increases and manufacturing efficiency decreases
Solution Approach 1:
Instead of applying adhesive selectively directly to the face stock, the patent inverts the approach by first applying a continuous adhesive layer to the release paper, then using a deadening agent to eliminate adhesive in areas where it is not needed. This inversion simplifies the application process while maintaining precision.
Solution Approach 2:
The patent applies the adhesive layer to the release paper before the face stock is positioned. This preliminary action allows the adhesive to be uniformly applied first, and then the deadening agent is applied only to specific areas, avoiding the complexity of trying to apply adhesive selectively directly to the face stock.
2Manufacturing precision
If deadening agent is applied in a separate operation after face stock separation, then selective adhesive areas are achieved, but production time increases
Solution Approach 1:
The patent combines the adhesive application and deadening agent application into a single integrated process. Both the adhesive layer and deadening agent are applied to the release paper in sequence before the face stock is applied, eliminating the need for a separate deadening operation after face stock separation and reducing production time.
3Manufacturing precision
If multiple separate operations are used for adhesive application and deadening, then adhesive control is precise, but manufacturing efficiency decreases
Solution Approach 1:
The patent maintains continuous production flow by applying both the adhesive layer and deadening agent in sequence on the release paper before moving to the next step. This continuous process eliminates interruptions and separate operations, improving manufacturing efficiency while maintaining precise adhesive control through the deadening agent application.
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 method simplifies the label manufacturing process, ensures precise selective adhesive application, and results in a uniform, efficient label stock with areas that are either adhesive or non-stick, improving handling and application characteristics.
Implementation Method 1
The strip is then cured in an oven and a face stock is then applied over the continuous adhesive surface
Implementation Method 2
A releasable backing is unrolled and a kill material is selectively dispensed onto one side... results in a uniform, efficient label stock with areas that are adhesive or non-stick
Data Source
AI summary
A process is provided to create a strip of selectively pressure-sensitive adhesive material. A first roller unwinds a backing and a roller dispenses a series of separated areas of inhibited adhesive material. A second roller applies a continuous layer of adhesive material over the inhibited adhesive material and backing. A facing is applied over the continuous layer of adhesive material. The machine then winds the finished material. A removable backing is coated with non-sticky material and then covered by a continuous sticky layer of material. A face stock material is then applied over the continuous sticky layer.