Insect Bite Patch With Grid Structure and Acrylate Adhesive
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Solution Overview
Problem
Conventional wound patches for insect bites have complex structures, are sensitive to storage conditions, and require sterile packaging, making them costly and prone to degradation, which affects their effectiveness and storage durability.
Innovation Solution
A method involving an adhesive-coatable organic carrier material coated with a non-UV-curing acrylate adhesive, applied at specific temperatures and pressures, and structured with a grid pattern to enhance mechanical properties and reduce itching, without the need for active ingredients, allowing for a simple single-layer design that is less sensitive to storage conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active substances are incorporated into the wound dressing to prevent itching, then the effectiveness against itching is improved, but the structure becomes more complex and storage sensitivity increases
Solution Approach 1:
The patent removes active substances from the wound dressing and extracts only the mechanical function of scratching relief. The wound dressing becomes inert, while the itching prevention function is transferred to the patch structure itself through micro-hooks that mechanically scratch the skin surface.
Solution Approach 2:
The patch structure serves multiple functions: it protects the wound from contamination while simultaneously preventing itching through mechanical scratching action. The micro-hooks on the patch underside provide the scratching function without requiring separate active ingredients or multi-layered wound dressings.
2Reliability
If active substances are used to prevent itching, then the therapeutic effect is improved, but storage conditions become more restrictive and storage time is limited
Solution Approach 1:
The patent replaces unstable active substances with a stable mechanical structure. The micro-hooks on the patch provide lasting scratching functionality without degradation, eliminating the need for controlled storage conditions and extending product shelf life indefinitely.
3Reliability
If a multi-layered structure with active substances is used, then the therapeutic function is improved, but sterile packaging is required and manufacturing complexity increases
Solution Approach 1:
The patent extracts active substances from the wound dressing layer, simplifying the manufacturing process. The wound dressing can be produced without sterile packaging requirements, while the therapeutic function is achieved through the mechanical micro-hook structure on the patch.
4Reliability
If the entire underside is made self-adhesive, then the attachment reliability is improved, but the mechanical flexibility is reduced
Solution Approach 1:
The patent applies adhesive properties only to specific regions of the patch underside rather than the entire surface. This localized adhesion maintains mechanical flexibility in non-adhesive areas while ensuring reliable attachment where needed, and allows integration of micro-hooks in adhesive regions for itching prevention.
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
The patch effectively reduces itching and swelling caused by insect bites for an extended period, maintaining effectiveness regardless of storage conditions and time, with improved mechanical properties and simplified manufacturing, reducing costs and storage sensitivity.
Implementation Method 1
Coating an underside of the carrier material with a non-UV-curing acrylate adhesive suitable for bonding the same to human skin
Data Source
AI summary
A method of making a patch comprising the steps of (1) providing a carrier material; (2) coating an underside of the carrier material with a suitable non-UV-curable acrylic adhesive, the adhesive being a solution of a polyacrylate in an organic solvent or solvent mixture, the solvent or solvent mixture being used in an amount of from 25% to 70% by weight; (3) assembling the patch; (4) forming a grid structure on the patch so that it comprises a plurality of intersecting strips. According to the invention, the adhesive is applied at a temperature of 90° C. to 120° C. for a time of 5 s to 60 s, and before and/or after the application of the adhesive, the patch is activated by repeated irradiation of the underside by ultraviolet light.