Sealing Tape Roll With Interior Barrier Layers
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Solution Overview
Problem
Sealing tapes with variable water vapor diffusion resistance due to manufacturing-related inhomogeneities lead to undesirably high water vapor diffusion and air permeability deviations, deviating from nominal values when wound into rolls.
Innovation Solution
A sealing tape roll with a flexible, compressible foam structure incorporating multiple interior barrier layers that extend over at least 50% of the tape's width, arranged in a row along the longitudinal direction to uniformly influence water vapor and air permeability, thereby minimizing inhomogeneity effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If sealing tape is wound into a roll for space-saving storage and transport, then storage efficiency and handling ease are improved, but manufacturing-related inhomogeneities cause variable water vapor diffusion resistance and air permeability
Solution Approach 1:
The sealing tape incorporates barrier layers with specifically tailored local properties at different positions through the thickness. These barrier layers have different water vapor diffusion resistances and are strategically positioned to compensate for manufacturing inhomogeneities, ensuring consistent performance across the entire sealing tape cross-section when wound into rolls.
Solution Approach 2:
The sealing tape is constructed as a composite material system combining foam material with multiple barrier layers of different materials and properties. This composite structure integrates materials with complementary characteristics to achieve uniform water vapor diffusion resistance and air permeability control, overcoming the variability introduced by rolling and manufacturing processes.
2Reliability
If barrier layers are added to reduce water vapor diffusion, then water vapor diffusion resistance is improved, but local inhomogeneities still cause deviations from nominal values
Solution Approach 1:
Barrier layers are positioned at specific locations through the sealing tape thickness with locally optimized properties. This local quality approach ensures that areas with higher diffusion resistance are strategically placed to compensate for manufacturing variations, achieving uniform overall performance despite inherent manufacturing inhomogeneities.
Solution Approach 2:
The invention modifies the water vapor diffusion resistance parameter by introducing barrier layers with different diffusion resistance values at different positions. By changing these parameters strategically throughout the sealing tape cross-section, the overall uniformity of water vapor diffusion resistance is achieved, compensating for manufacturing variations.
3Reliability
If multiple barrier layers are incorporated to control permeability, then water vapor diffusion control is improved, but device complexity increases
Solution Approach 1:
Instead of uniformly complex multi-layer structures throughout, barrier layers are strategically positioned only where needed to control water vapor diffusion and air permeability. This localized approach achieves effective permeability control while minimizing overall structural complexity and maintaining ease of integration into the sealing tape.
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 solution significantly reduces water vapor diffusion and air permeability deviations, ensuring consistent performance and adherence to predetermined values by creating a homogeneous sealing tape section.
Implementation Method 1
the diffusion of water vapor in the functional direction of the sealing tape, i.e., in the direction between the interior and exterior sides of the joint to be sealed, which is considered so as to define a diffusion gradient between the interior and exterior sides of the room
Implementation Method 2
A barrier layer of this type has greater resistance to the diffusion of water vapor than the foam of the sealing tape and is therefore able to reduce the diffusion of water vapor through the sealing tape
Data Source
AI summary
A sealing tape roll comprises a sealing tape of flexible, compressible foam with a plurality of interior barrier layers, wherein the sealing tape is wound up into the sealing tape roll around an axis extending transversely to a longitudinal direction of the sealing tape in such a way that side surfaces of the sealing tape form end surfaces of the sealing tape roll. The sealing tape comprises a plurality of sealing tape sections, which, in an unwound state of the sealing tape, are arranged in a row in the longitudinal direction, wherein a barrier layer of the plurality of barrier layers is arranged between each pair of adjacent sealing tape sections of the plurality of sealing tape sections. The plurality of barrier layers extend over at least 50% of a width of the sealing tape roll between the opposite end surfaces of the sealing tape roll.