Sealing Tape With Nested Barrier Layer Protecting Against Damage
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Solution Overview
Problem
Existing sealing tapes with outer barrier foils are prone to damage during transport and installation, and their production is complex and limited by the size of laminate blocks, while also requiring high energy consumption.
Innovation Solution
A sealing tape design featuring two flexible foam strips with a barrier layer between them, where the barrier layer is partially formed from a foil strip and enclosed in a pocket, allowing for variable properties and reduced energy consumption, with adhesion points only on specific areas for simplified production and expanded tape length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the barrier layer is arranged on the outside of the sealing tape, then the vapor impermeability is enhanced, but the barrier layer is damaged during transport or installation
Solution Approach 1:
The barrier layer is nested between the two foam strips, with the first foam strip wrapping around and enclosing the barrier layer and second foam strip. This nested configuration protects the barrier layer from damage during transport and installation while maintaining its vapor impermeability function.
Solution Approach 2:
Instead of placing the barrier layer on the outside surface of the sealing tape, the invention inverts the arrangement by positioning it internally between the foam strips. This inversion protects the vulnerable barrier layer while preserving its protective function.
2Reliability
If large-area barrier layers are formed on plates by lamination or gluing, then the barrier properties are improved, but the production process requires many complex work steps
Solution Approach 1:
The sealing tape is segmented into multiple functional layers (first foam strip, barrier layer, second foam strip) that can be separately manufactured and then assembled. This segmentation allows for simplified production of individual components and flexible assembly processes.
Solution Approach 2:
The invention uses composite material construction with distinct functional layers - open-pored foam material for sealing and expansion, and a barrier layer for vapor protection. These layers are combined in a structured assembly that leverages the advantages of each material while simplifying production.
3Object-affected harmful factors
If the barrier layer is arranged inside the sealing tape, then the barrier layer is protected against damage, but the production energy consumption increases
Solution Approach 1:
The foam strips are designed to be self-adhesive or self-bonding, allowing the barrier layer to be enclosed without requiring extensive external adhesive application or complex bonding processes. The structure essentially assembles itself through the inherent properties of the foam materials.
Solution Approach 2:
The adhesion between foam strips and barrier layer is applied only where necessary - at the interfaces between layers - rather than requiring complete surface bonding throughout. This partial action reduces energy consumption while maintaining structural integrity.
4Ease of manufacture
If the foam strips are made in one piece, then the production is simplified, but the expansion capability is restricted
Solution Approach 1:
The sealing tape is divided into separate foam strips that can expand independently. This segmentation allows each strip to expand freely without being constrained by a monolithic structure, while the strips are connected through the barrier layer assembly.
Solution Approach 2:
The foam strips are designed with dynamic expansion capability, allowing them to change volume and shape in response to installation conditions. The separated construction enables this dynamic behavior while the barrier layer provides structural connection.
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 barrier layer is protected within the tape, enabling variable property design and reduced energy consumption, while simplifying production and expanding tape length without increasing foam consumption, and allowing for targeted release of additional materials.
Implementation Method 1
reduces a vapor diffusion permeability of the sealing tape in the functional direction
Implementation Method 2
made of a flexible foam that can recover after compression
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The sealing tape (2) for sealing a joint comprises two foam strips (114, 116) made of soft foam, which are not formed in one piece and are arranged side by side in the functional direction (F) of the sealing tape (2). A barrier layer with at least one film strip (130) is arranged between the foam strips (114, 116) and is bonded to both foam strips (114, 116). In a region between the first foam strip (114) and the second foam strip (116), and at least including the first film strip (130) of the barrier layer (30), at least one longitudinal pocket (134) or at least one longitudinal cavity (150) is formed, which is completely enclosed on at least four sides.