Self-Adhesive Tape Width Expansion for Sealing Joint Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing self-adhesive tapes for sealing joints in construction require precise application of spaced-apart self-adhesive strips, leading to instability and irregularities during rolling, especially when the additional material thickness of the strips accumulates, causing manufacturing challenges and potential faulty coatings.
Innovation Solution
A self-adhesive tape design featuring a carrier material with a central region where multiple layers are arranged one on top of the other, forming internal surfaces that are not initially exposed, allowing for a transition to a second state with increased width where the self-adhesive layer covers only part of the outer surface, reducing material thickness and enhancing stability and ease of application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spaced-apart self-adhesive strips are applied separately on large rolls, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple self-adhesive strips into a single integrated tape structure with a common carrier material. The carrier material serves as a unified base for multiple self-adhesive layers, eliminating the need for separate application processes and reducing positioning complexity while maintaining manufacturing precision.
Solution Approach 2:
The self-adhesive strips are pre-positioned and fixed onto the carrier material during manufacturing, creating a pre-assembled tape structure. This preliminary action eliminates the need for precise field application and reduces the complexity of the installation process while ensuring accurate positioning.
2Reliability
If multiple self-adhesive strips are arranged on top of each other, then sealing capability is improved, but stability of the roll deteriorates
Solution Approach 1:
The patent distributes self-adhesive layers in the longitudinal direction along the tape rather than stacking them vertically in the transverse direction. This dimensional rearrangement maintains the cumulative sealing capability while preventing the accumulation of material thickness that would cause roll instability.
Solution Approach 2:
The self-adhesive functionality is segmented into multiple discrete layers positioned at different locations along the tape length, rather than concentrating multiple thick adhesive strips at the same position. This segmentation maintains total adhesive area for sealing while distributing material thickness to preserve roll stability.
3Ease of operation
If self-adhesive layer covers the entire outer surface, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent applies self-adhesive layers selectively at specific locations and in specific orientations along the tape, rather than uniformly across the entire surface. This localized application provides direction-specific adhesion where needed while simplifying the manufacturing process by avoiding the need for precise positioning of multiple separate strips.
Data Source
Figure 1~3
Figure 4~6
AI summary
The invention relates to a self-adhesive tape (1) suitable and intended for sealing joints, comprising at least a first layer of a carrier material (2) which has two opposing outer surfaces (4, 5) of the carrier material, wherein at least one of these outer surfaces is at least partially coated with a self-adhesive layer (3), wherein in the first state an outer surface is completely covered by the self-adhesive layer at least in a central region with respect to the width direction of the tape, wherein the tape can be transferred from a first state to a second state, wherein the tape has a greater width in the second state than in the first state and in the second state the self-adhesive layer does not completely cover the outer surface at least in the central region with respect to the width direction of the tape.Furthermore, the invention relates to a method for producing a self-adhesive tape suitable and intended for sealing joints.