Foam Sealing Strip With Embedded Barrier Layer for Vapor Tightness
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Solution Overview
Problem
Existing sealing tapes are complex to manufacture and prone to damage during installation due to external film strips, while internal film strips integrated into foam materials are cumbersome to produce.
Innovation Solution
A method involving a foam carrier with incisions on both surfaces, where film strips or adhesive tape are introduced into these incisions, and the foam is stretched and tensioned to widen the cuts, allowing for easier integration and closure around the inserted elements, forming a continuous barrier layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If film strips are arranged on the outside of the sealing tape, then vapor impermeability is increased, but the films can be damaged during installation
Solution Approach 1:
The film strip is nested inside the foam material rather than being placed externally. The incisions in the foam allow the film strip to be inserted and contained within the foam structure, protecting it from external damage while maintaining its vapor barrier function. This nesting approach resolves the contradiction by embedding the vulnerable component within the protective foam matrix.
2Object-affected harmful factors
If film strips are integrated inside the foam material, then protection during installation is improved, but manufacturing complexity increases
Solution Approach 1:
The foam material is segmented by creating incisions that allow the film strip to be inserted. Rather than requiring complete integration of the film into the foam matrix, the foam is divided into sections with controlled openings, simplifying the manufacturing process while still achieving internal protection of the film strip.
Solution Approach 2:
The incisions are created in the foam material before the film strip is inserted. This preliminary preparation of the foam structure allows for easier and more straightforward integration of the film strip, reducing manufacturing complexity compared to attempting to embed the film during foam formation or requiring post-formation modifications.
3Ease of manufacture
If incisions are made in both surfaces of the foam carrier, then film strip integration is simplified, but manufacturing steps increase
Solution Approach 1:
The incisions in the first and second surfaces are combined to form a continuous pathway through the foam carrier. By coordinating the incisions on both surfaces, the film strip can be inserted through one surface and emerge through the other, creating a continuous barrier layer without requiring separate complex integration steps for each surface.
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 method simplifies the production of sealing tapes by creating a continuous barrier layer within the foam, enhancing vapor impermeability and ease of installation while reducing manufacturing complexity.
Implementation Method 1
the foam is stretched and tensioned to widen the cuts
Implementation Method 2
an adhesive layer, and in particular a self-adhesive film, is applied to the foam sheet
Data Source
Figure 1~4
Figure 5~8
Figure 9~12
AI summary
Sealing tape (10) with a foam carrier, wherein this foam carrier extends in a predetermined longitudinal direction (L) and has a first surface (2a) and a second surface (2b) and these surfaces (2a, 2b) are opposite each other, characterized in that a first cut (12) is arranged in the first surface, which extends at least also in a thickness direction (D), wherein this thickness direction extends from the first surface (2a) to the second surface (2b), and in the second surface (2b) a second cut (24), which also extends at least also in this thickness direction (D), wherein at least one of the cuts extends at a predetermined angle other than 0° to the thickness direction (D) and a foil strip (6), an adhesive tape strip and/or an adhesive-like medium is introduced in the two cuts.