Sealing Liquid Penetration Agent for Mail Sealing
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Solution Overview
Problem
Existing sealing liquids fail to reliably seal mail pieces with varying paper materials, leading to insufficient bonding or unwanted washing-out of water-sensitive imprints, due to inconsistent dosing and material absorbency issues.
Innovation Solution
A sealing liquid containing a penetration agent that reduces absorption time by at least 10%, allowing for a consistent base setting that prevents excessive liquid from washing out, even with high absorbency materials, combined with a wetting agent for effective gumming wetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of sealing liquid is increased to ensure sufficient wetting of gumming, then bonding reliability is improved, but washing-out of water-sensitive imprints occurs
Solution Approach 1:
The patent changes the physical-chemical parameters of the sealing liquid by adding a penetration agent that reduces absorption time. This allows the sealing liquid to be applied in controlled amounts that penetrate quickly into the gumming, preventing both insufficient wetting and excessive liquid that would cause washing-out of imprints.
Solution Approach 2:
The penetration agent acts as an intermediary substance between the sealing liquid and the gumming material. It facilitates controlled penetration and absorption of the sealing liquid into the gumming, ensuring adequate wetting without allowing excess liquid to remain on the surface and cause washing-out.
2Reliability
If the sealing liquid dosage is optimized for high absorbency materials, then reliable sealing is achieved, but insufficient liquid remains for bonding
Solution Approach 1:
The patent modifies the absorption characteristics of the sealing liquid system by introducing a penetration agent that significantly reduces absorption time. This enables the sealing liquid to be absorbed quickly and uniformly by high absorbency materials, ensuring adequate bonding without requiring excessive liquid quantities.
3Device complexity
If a fixed dosing setting is used for all paper materials, then device simplicity is maintained, but sealing performance varies with material absorbency
Solution Approach 1:
The patent changes the physical properties of the sealing liquid through the addition of a penetration agent, which reduces absorption time. This allows a single fixed dosing setting to work effectively across different paper materials, as the modified sealing liquid adapts to various absorbency rates without requiring complex adjustable dosing 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
Ensures reliable sealing across different paper materials without washing-out, maintaining effective bonding and preventing unwanted liquid runoff, regardless of material type or operational state.
Implementation Method 1
a penetration agent, in particular a C1-8 alkyl ester of C1-8 monocarbonic, dicarbonic, or tricarbonic acids
Implementation Method 2
A penetration agent is a substance, which leads to an absorption time of the sealing liquid in paper materials that is reduced relative to water
Implementation Method 3
a wetting agent, in particular a surfactant wetting agent
Data Source
AI summary
The invention concerns a sealing liquid comprising water and a penetration agent for sealing of mail pieces, the use of said sealing liquid as well as sealing devices and franking machines containing such a sealing liquid.