Adhesive Preparation Package Embossed Heat Seal
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Solution Overview
Problem
Conventional adhesive preparation packaging often results in pinholes due to inadequate heat-sealing, leading to compromised air-tightness and sterility, especially when packaging transdermal drug-containing preparations, which can cause drug adsorption and affect treatment efficacy.
Innovation Solution
The use of an adhesive preparation package with a heat-sealed portion comprising both embossed and flat heat-sealed patterns surrounding the periphery, where the flat heat-sealed portion has a band width of 0.4 mm to 2.0 mm, ensuring complete sealing without wrinkles or pinholes, and utilizing a transparent packaging film for visual confirmation of sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat sealing treatment is applied to package adhesive preparation, then air-tightness and sterility are improved, but pinholes occur in the heat-sealed portion
Solution Approach 1:
The patent applies different surface treatments to different regions of the heat-sealed portion. The first region has an embossed surface with凹凸 patterns that prevent pinhole formation, while the second region maintains a smooth surface for proper heat sealing. This local differentiation allows the heat-sealed portion to simultaneously achieve pinhole-free structure and effective sealing.
2Reliability
If heat sealing treatment is applied to package adhesive preparation, then sterility is improved, but wrinkles occur in the heat-sealed portion
Solution Approach 1:
The embossed surface in the first region of the heat-sealed portion effectively prevents wrinkle formation by providing a textured structure that accommodates film tension and thickness variations. The smooth second region maintains proper sealing contact. This local differentiation enables wrinkle-free heat sealing while maintaining sterility.
3Reliability
If packaging film thickness is increased to prevent pinholes, then heat sealing reliability is improved, but drug adsorption to packaging film increases
Solution Approach 1:
The embossed surface structure in the first region prevents pinhole formation without requiring increased film thickness. The textured surface accommodates film variations and provides mechanical stability for reliable heat sealing. This allows use of thinner packaging films that adsorb less drug, reducing drug loss while maintaining sealing reliability.
4Quantity of substance
If packaging film thickness is reduced to minimize drug adsorption, then drug content retention is improved, but pinhole occurrence increases
Solution Approach 1:
The embossed surface structure in the first region provides mechanical stability and prevents pinhole formation even in thin packaging films. The textured surface compensates for reduced film thickness by providing structural reinforcement. This enables use of thin films that minimize drug adsorption while maintaining pinhole-free heat sealing.
5Reliability
If heat sealing pressure is increased to prevent pinholes, then sealing completeness is improved, but film breakage occurs
Solution Approach 1:
The embossed surface in the first region distributes heat sealing pressure across the凹凸 structures, preventing localized stress concentration that causes film breakage. The smooth second region maintains adequate sealing pressure for complete sealing. This pressure distribution allows complete sealing without exceeding film strength limits.
6Strength
If heat sealing pressure is decreased to prevent film breakage, then film integrity is improved, but sealing completeness deteriorates
Solution Approach 1:
The smooth second region of the heat-sealed portion provides optimal contact for heat transfer and sealing at reduced pressures. The embossed first region maintains structural integrity and prevents pinholes even at lower pressures. This differentiation enables complete sealing at pressures that preserve film integrity.
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 solution prevents pinhole formation, maintains air-tightness and sterility, reduces drug adsorption to the packaging film, and allows for visual or image-based confirmation of complete sealing, enhancing the stability and appearance of the packaged adhesive preparation.
Implementation Method 1
the packaging films being heat-sealed around the adhesive preparation
Implementation Method 2
the heat-sealed portion of the packaging film comprises an embossed heat-sealed portion and a flat heat-sealed portion
Data Source
AI summary
The present invention provides an adhesive preparation package containing an adhesive preparation and a packaging film(s) enclosing said preparation, the packaging films being heat-sealed around the adhesive preparation, wherein the heat-sealed portion of the packaging film comprises an embossed heat-sealed portion and a flat heat-sealed portion, and the embossed heat-sealed portion and the flat heat-sealed portion each form a pattern surrounding the periphery of the adhesive preparation. The adhesive preparation package of the present invention is free of occurrence of pinholes in a heat-sealed portion and can maintain superior air-tightness and sterility.