Spot Adhesive Application for Label Carrier Waste Reduction
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Solution Overview
Problem
Conventional adhesive label production methods generate significant waste due to excessive adhesive and release agent usage, making it difficult to recycle and resulting in non-reusable materials.
Innovation Solution
The method involves applying adhesive only to specific areas where labels will be located on the carrier material, reducing adhesive usage and allowing for the reuse of label material by keeping the punched grid largely free of adhesive, and using spot or structured adhesive application to minimize waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied to the entire surface of the backing material, then the label material can be fully bonded to the backing, but the amount of adhesive used increases significantly and the die-cut residue becomes contaminated with adhesive making it non-recyclable
Solution Approach 1:
The patent applies adhesive only in specific areas where labels will be positioned on the backing material, rather than coating the entire surface. This localized adhesive application maintains sufficient bonding reliability for label attachment while significantly reducing adhesive consumption and preventing contamination of die-cut residues, thereby enabling their reuse or recycling.
Solution Approach 2:
The backing material surface is divided into multiple zones: areas where labels will be positioned (with adhesive application) and areas where labels will not be positioned (without adhesive application). This segmentation allows the die-cut residues from non-adhesive areas to remain clean and reusable, while still providing adequate adhesive coverage for label bonding in the designated areas.
2Ease of operation
If the backing material is fully coated with release agent, then labels can be easily removed from the backing, but the removed backing material with release agent becomes waste that is difficult to recycle
Solution Approach 1:
The release agent is applied selectively only in areas where labels will be positioned on the backing material, rather than coating the entire backing surface. This localized release agent application enables easy label removal from the adhesive areas while leaving the non-adhesive areas of the backing material clean and suitable for reuse or recycling.
Solution Approach 2:
By limiting release agent application to only the necessary areas, the patent enables the recovered backing material (particularly from non-adhesive areas) to be reused or recycled, transforming what would have been waste into a recoverable resource.
3Productivity
If die-cutting is performed after full adhesive coating, then labels can be separated from the backing, but the die-cut residue is contaminated with adhesive and printing residue making it impossible to reuse
Solution Approach 1:
The patent applies adhesive only in the specific areas where labels will be positioned, leaving the areas corresponding to die-cut residues free of adhesive. This ensures that when die-cutting is performed, the residues remain clean without adhesive or printing residue contamination, enabling their reuse or recycling while maintaining efficient label production.
4Strength
If adhesive is applied in large quantities to ensure complete coverage, then bonding strength is maximized, but the cost and environmental impact increase due to excessive material usage
Solution Approach 1:
The patent applies adhesive only in the specific areas where labels will be positioned on the backing material, rather than coating the entire surface. This localized application provides sufficient bonding strength for label attachment while significantly reducing the total quantity of adhesive required, thereby lowering costs and environmental impact.
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 approach significantly reduces waste, enables the reuse of label material, and conserves resources by minimizing adhesive and release agent usage, while maintaining effective adhesion and ease of label removal.
Implementation Method 1
coating a release agent-coated backing material with an adhesive, and joining the printed label material with the backing material coated with the adhesive
Data Source
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AI summary
A method for producing adhesive labels (2) is disclosed, comprising printing on a label material (4), applying an adhesive or bonding agent (H) to a carrier material (16) provided with a release agent (T) in a spot application (8) essentially limited to the area of a subsequent adhesive label, and combining the carrier material (16) provided with the adhesive or bonding agent (H) with the printed label material (4) so that the adhesive or bonding agent (H) is essentially only located in the area of the adhesive label (2).