Precompressed Sealing Tape With Rigid Element
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Solution Overview
Problem
Existing pre-compressed sealing tapes are limited to small widths due to the restoring force of the foam strip causing deformation into an oval or round shape, which is unsuitable for wider installations, failing to meet the demands for improved sealing and thermal insulation.
Innovation Solution
A pre-compressed sealing tape design featuring an elastically resilient foam strip with a strip-shaped element of higher flexural strength, which maintains the compressed shape even at larger widths, and a film-like covering with a tear tab for easy expansion, allowing for secure attachment and efficient sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the width of the pre-compressed sealing tape is increased to improve sealing performance and thermal insulation, then the sealing effectiveness and heat insulation are improved, but the foam strip deforms into an oval or round shape due to restoring force, making it unsuitable for installation
Solution Approach 1:
The sealing tape is divided into two functional parts: a foam strip for sealing and a rigid strip-shaped element for structural support. This segmentation allows each component to perform its specific function - the foam provides compression and sealing while the rigid element maintains the rectangular shape, resolving the contradiction between width and shape stability.
Solution Approach 2:
The sealing tape combines two different materials with complementary properties: an elastically resilient foam strip and a rigid strip-shaped element with higher flexural strength. This composite structure allows the foam to provide sealing pressure while the rigid material prevents deformation, enabling wide sealing tapes to maintain their rectangular cross-section.
2Stability of the object's composition
If a rigid layer is added to the cover to maintain shape stability, then the structural integrity is improved, but the thermal insulation performance deteriorates due to the rigid layer remaining in the joint
Solution Approach 1:
The rigid strip-shaped element is extracted from the cover and placed as a separate component within the sealing tape structure. This allows the rigid element to provide shape stability during installation while being positioned correctly to minimize its impact on thermal insulation in the final sealed joint, unlike a rigid cover layer that would remain in the joint space.
Solution Approach 2:
The rigid strip-shaped element acts as an intermediary between the foam strip and the external environment during installation. It maintains the rectangular shape of the foam strip while allowing the foam to expand and seal the joint, ultimately being excluded from the final sealed joint space, thus preserving thermal insulation performance.
3Force
If the foam strip is made more resilient to improve sealing pressure, then the sealing force is increased, but the deformation into oval or round shape is exacerbated
Solution Approach 1:
The rigid strip-shaped element with higher flexural strength acts as a counterbalancing structure that resists the deforming forces generated by the resilient foam strip. While the foam provides sealing pressure through its elastic recovery, the rigid element counteracts the tendency to deform into an oval or round shape, maintaining the rectangular cross-section even with high sealing force.
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 enables the production and handling of sealing tapes in various widths with excellent sealing properties and minimized deformation, providing improved thermal insulation and soundproofing.
Implementation Method 1
the restoring force of the precompressed sealing strip results in an oval to round shape inside the cover
Implementation Method 2
The strip-shaped element is made of foam and has a higher flexural strength than the foam strip, the strip-shaped element having a flexural strength of more than 200 kPa
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
The pre-compressed sealing tape has elastically resilient foam strips (2) that are extended in longitudinal direction than in transverse direction. The foam strips have two side surfaces (6) and two cross surfaces (8,9) that are connected with the side surfaces. A strip-shaped element (10) is formed from foam material and has a high bending strength than the foam strips.