Paper Carrier Sealing Label with Breaking Points

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Solution Overview

Problem

Conventional sealing labels with plastic films face challenges in printability and recyclability due to low surface energy and high resource consumption, making them difficult to print and recycle effectively.

Innovation Solution

A sealing label design featuring a carrier layer with a paper layer, an intermediate layer with predetermined breaking points, and an adhesive layer, allowing for reliable separation and improved printability without the need for special pretreatments, while enhancing recyclability by using a paper-based structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If plastic films are used as carrier layer, then stability and uniform structure are improved, but printability deteriorates due to low surface energy requiring special pretreatments

Engineering Contradiction:

ImprovestabilityVSAvoidprintability

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent changes the material parameter of the carrier layer from plastic film to paper, fundamentally altering the surface properties. Paper naturally possesses high surface energy and porosity, enabling direct printing without corona or plasma treatments, thus resolving the printability issue while maintaining structural stability through the paper's inherent properties

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs a paper-based carrier layer that is inherently printable and can be easily discarded after use. This disposable approach eliminates the need for expensive pretreatment processes and complex recycling infrastructure, as the paper carrier can be directly integrated into waste paper streams, reducing manufacturing costs and simplifying the production process

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Stability of the object's composition

If plastic films are used as carrier layer, then stability is improved, but recyclability deteriorates due to resource consumption and difficulty in processing

Engineering Contradiction:

ImprovestabilityVSAvoidrecyclability

Core Design Contradiction:

Stability of the object's compositionVSLoss of substance

Solution Approach 1:

The patent changes the material composition from synthetic plastic to natural paper, fundamentally altering the recyclability parameter. Paper is biodegradable and can be processed through existing waste paper infrastructure, enabling circular economy integration. This material substitution maintains the carrier layer's structural stability during use while dramatically improving end-of-life recyclability and reducing fossil resource dependence

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent designs the sealing label so that the paper carrier layer can be easily separated and recovered after use. The intermediate layer's predetermined breaking points enable clean separation, allowing the paper carrier to be collected and fed into waste paper recycling processes. This recovery mechanism transforms the carrier from waste to recyclable material, improving overall sustainability without compromising initial stability

Inventive Principle:

Principle #34Discarding and recovering

3Reliability

If intermediate layer is designed with predetermined breaking points, then evidence of opening is improved, but force transmission deteriorates due to inhomogeneity and low stability of paper

Engineering Contradiction:

Improveevidence of openingVSAvoidforce transmission

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The patent applies local quality by creating predetermined breaking points only in specific areas of the intermediate layer, while maintaining the overall structural integrity of the paper carrier. The breaking points are strategically positioned to provide clear opening evidence at the seal interface, while the rest of the paper carrier maintains sufficient strength for force transmission during the sealing process

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent creates a composite structure combining paper carrier layer with an intermediate layer that has controlled weakness zones. This composite design allows the strong paper to provide overall structural support and force transmission, while the intermediate layer's predetermined breaking points provide localized failure modes for reliable opening evidence. The combination synergistically resolves both requirements

Inventive Principle:

Principle #40Composite materials

Data Source

PatentEP4202889A1Sealing label, method for producing a sealing label and use

Publication Date: 2023.06.28 TESA SCRIBOS

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AI summary

The invention relates to a sealing label (1) comprising a carrier layer (2), an adhesive layer (4), and an intermediate layer (3) arranged between the carrier layer (2) and the adhesive layer (4), the intermediate layer (3) having predetermined breaking points (30) for internal separation of the intermediate layer (3), wherein the carrier layer (2) comprises at least one paper layer (21). The invention further relates to the use of the sealing label (1), its manufacturing process, and the use of a carrier layer (2) comprising or consisting of a paper layer (21) for manufacturing the sealing label (1).