Temperature-Control Mat Adhesive Layout for Water-Resistant Bonding
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Solution Overview
Problem
The existing temperature control mats face issues with detachment and uneven temperature profiles when used with self-leveling cast masses of high water content, as water penetrates under the adhesive, causing the heating cable mat to detach from the substrate and resulting in uneven surface coverage.
Innovation Solution
The use of a double-sided adhesive tape with the adhesive on the underside passing through the carrier web, allowing for a water-resistant bond and simplified handling by covering the adhesive surface, which is protected during rolling and unrolling, and the adhesive strip on the upper side for secure attachment of the temperature control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied directly to the underside of the carrier web, then the mat can be bonded to the substrate, but water penetrates under the adhesive causing detachment and uneven temperature profiles
Solution Approach 1:
A double-sided adhesive tape is introduced as an intermediary element between the carrier web and the substrate. This tape provides a water-resistant adhesive layer that prevents water penetration while maintaining reliable bonding. The tape acts as a protective barrier that eliminates the harmful effect of water infiltration without compromising the bond stability.
2Reliability
If double-sided adhesive tape is used with adhesive on the underside, then water-resistant bonding is achieved, but the exposed adhesive surface causes handling difficulties
Solution Approach 1:
The adhesive layers are positioned on both sides of the double-sided tape, with one adhesive layer facing the substrate and the other adhesive layer facing inward toward the carrier web. This inverted configuration protects the adhesive surface from exposure during handling while maintaining water-resistant bonding capabilities. The inward-facing adhesive is covered by the carrier web, eliminating handling difficulties.
3Ease of manufacture
If the temperature control mat is rolled up for transport and storage, then space is saved, but the exposed adhesive causes the mat to stick to itself
Solution Approach 1:
The double-sided adhesive tape is configured with adhesive layers on both sides, allowing the rolled-up mat to adhere to itself during storage and transport. This self-adhesion prevents unrolling and maintains a compact form factor. The adhesive that would normally cause handling issues is inverted to face inward, where it becomes beneficial for maintaining the rolled configuration.
4Manufacturing precision
If adhesive is applied to the entire underside of the carrier web, then complete coverage is achieved, but post-processing effort increases due to detachment issues
Solution Approach 1:
The double-sided adhesive tape serves as a mediator that provides uniform adhesive distribution across the entire underside of the carrier web. This ensures complete and even coverage without the detachment problems associated with direct adhesive application. The water-resistant properties of the tape eliminate the need for post-processing to address detachment issues, reducing time loss.
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
This configuration provides a stable and even temperature profile by ensuring the mat adheres correctly to the substrate, simplifying handling and installation, and allowing for the use of high-water-content casting compounds without additional post-processing efforts.
Implementation Method 1
the adhesive is arranged on a double-sided adhesive tape which is glued to the underside of the carrier web
Implementation Method 2
the adhesive layer on the underside of the adhesive tape adheres to the upper side of the carrier web and thus prevents the rolled up temperature control mat from unrolling
Data Source
Figure 1~2
AI summary
The invention relates to a temperature-controlling mat (1) which comprises a substrate strip (2) with an upper face (9) and a lower face (11), and at least one temperature-controlling device (5) arranged on the substrate strip (2), an adhesive being arranged on the lower face (11) of the substrate strip (2). The aim of the invention is to improve the handling properties of the temperature-controlling mat. For this purpose, the adhesive is arranged on a double-sided adhesive tape (12) bonded to the lower face (11) of the substrate strip (2). In the rolled-up state of the temperature-controlling mat (1), the adhesive on the lower face of the adhesive tape (12) is covered by the upper face (9) of the substrate strip (2) and the adhesive tape (12) is bonded to the upper face (9) of the substrate strip (2).