Plaster Strip Arrangement for Sealing Building Joints
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Solution Overview
Problem
The assembly of expansion joint profiles on construction sites is cumbersome and expensive, often resulting in sealing issues.
Innovation Solution
A plastering strip arrangement with pre-attached expansion strips that are held in a compressed state by locking means, allowing for quick and easy assembly by fixing two contact legs together with holding means such as adhesive tape or clips, ensuring reliable sealing upon expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If expansion joint profiles are assembled using separate components (joint strips and sealing tape) on construction sites, then sealing function is achieved, but assembly becomes cumbersome and expensive
Solution Approach 1:
The patent combines the joint strip and sealing tape into a single integrated expansion joint profile component. The sealing tape is pre-mounted on the joint strip, eliminating the need for separate assembly steps on construction sites. This integration directly resolves the contradiction by maintaining reliable sealing function while dramatically simplifying the assembly process to a single installation step.
Solution Approach 2:
The sealing tape is pre-attached to the joint strip during manufacturing, performing the sealing preparation action in advance. This preliminary action eliminates the need for complex on-site assembly operations, resolving the contradiction between achieving reliable sealing and maintaining ease of operation during installation.
2Reliability
If separate joint strips and sealing tapes are used, then sealing is achieved, but assembly time and cost increase
Solution Approach 1:
By merging the joint strip and sealing tape into one integrated component, the patent eliminates multiple assembly operations. This single-component design maintains effective sealing while significantly improving assembly speed and reducing labor costs, directly addressing the productivity contradiction.
Solution Approach 2:
The sealing tape is pre-installed on the joint strip during factory production, performing the sealing preparation action beforehand. This preliminary action transforms a multi-step on-site assembly process into a single rapid installation operation, resolving the contradiction between reliable sealing and high assembly productivity.
3Reliability
If expansion strips are introduced separately on site, then sealing is achieved, but assembly becomes complex and time-consuming
Solution Approach 1:
The patent merges the expansion strip functionality into the integrated joint strip component. The sealing tape is pre-mounted on the joint strip, eliminating the need for separate introduction and installation steps on construction sites. This integration maintains reliable sealing while reducing device complexity and assembly steps to a single installation operation.
Solution Approach 2:
The sealing tape and joint strip are pre-assembled during manufacturing, performing the complex assembly action in advance. This preliminary action eliminates multiple on-site assembly steps, resolving the contradiction between achieving reliable sealing and minimizing device complexity during installation.
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
Simplifies the installation process by replacing multiple attachment steps with a single work step, providing a reliable and permanent seal without the need for separate introduction of expansion strips, and accommodates movement due to temperature fluctuations.
Implementation Method 1
an expansion strip (34) is attached to one of the two contact legs (22, 46) and is held in a compressed state by a locking means (44), and wherein the expansion strip (34) is designed such that it expands after the locking means (44) is released and seals against the opposite contact leg (46, 22), in particular with delayed expansion
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
An arrangement of plastering beads (16) according to the invention for sealing placement in a joint (14) between two opposing end faces (4, 10) of adjacent, in particular aligned, first and second building components (2, 8), in particular masonry sections or insulation panels, comprises: a first plastering bead (18) with a contact leg (22) for contacting the end face (4) of the first building component (2); and a second plastering bead (20) with a contact leg (46) for contacting the end face (10) of the second building component (8), which is opposite the end face (4) of the first building component (2); wherein a retaining means (32) is provided which fixes the two contact legs (22, 46) to each other, in particular is attached to the rear areas (28, 46) of the contact legs;wherein an expansion strip (34) is attached to one of the two mounting legs (22), in particular bonded to it, and is held in a compressed state by a locking means (44), and wherein the expansion strip (34) is designed such that it expands after the locking means (44) is released and seals against the opposite mounting leg (46).