Moisture Curable Adhesive with Spacer Particles for Floor Installation
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Solution Overview
Problem
Existing adhesive compositions for wood floor installations over concrete substrates face issues with moisture vapor transmission, leading to dimensional changes and bond degradation, and require multiple applications or specialized tools, resulting in non-uniform adhesive films and increased installation time.
Innovation Solution
A one-component moisture-curable adhesive composition incorporating irregularly shaped spacer particles, which ensures a continuous and uniform adhesive layer with controlled moisture vapor transmission and sound abatement properties, allowing for a single application without specialized tools and reducing installation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If membrane-forming curing compounds or vapor barriers are applied to seal the concrete surface, then moisture vapor transmission is reduced, but installation time increases due to multiple applications and curing requirements
Solution Approach 1:
The patent combines the adhesive composition and vapor barrier function into a single integrated product. The adhesive layer itself provides moisture vapor transmission control without requiring separate membrane applications, eliminating multiple steps and reducing installation time while maintaining effective moisture protection.
Solution Approach 2:
The adhesive composition performs multiple functions simultaneously: it bonds the flooring to the substrate while also controlling moisture vapor transmission. This multi-functional approach eliminates the need for separate vapor barrier applications and reduces the overall number of installation steps.
2Manufacturing precision
If specialized tools are used for adhesive application, then adhesive film uniformity is improved, but device complexity and installation time increase
Solution Approach 1:
The adhesive composition contains built-in spacer particles that automatically maintain uniform film thickness during application. The spacers self-regulate the adhesive layer height without requiring specialized application tools, allowing standard tools to achieve consistent results and simplifying the installation process.
Solution Approach 2:
The patent modifies the adhesive composition by incorporating spacer particles of specific sizes and distributions. These particles change the physical parameters of the adhesive system, enabling it to self-level and maintain uniform thickness without specialized application equipment, thereby achieving film uniformity with simpler tools.
3Manufacturing precision
If spacer particles are added to the adhesive composition, then adhesive film thickness control is improved, but moisture vapor transmission control deteriorates due to air gaps
Solution Approach 1:
The patent carefully controls the size, distribution, and concentration of spacer particles within the adhesive composition. By optimizing these parameters, the adhesive maintains uniform thickness while the particles are sufficiently small and evenly distributed to prevent continuous air gap formation, thus preserving moisture vapor transmission control.
Solution Approach 2:
The adhesive is formulated as a composite material containing polymer matrix, additives, and spacer particles. This composite structure allows the adhesive to maintain continuity and adhesion properties while incorporating thickness-controlling spacers, achieving both film uniformity and effective moisture vapor transmission control.
4Strength
If pressure is applied to the top of the floor covering during installation, then bond strength is improved, but adhesive squeeze out increases and film thickness control deteriorates
Solution Approach 1:
The spacer particles are incorporated into the adhesive composition before application, acting as pre-positioned thickness regulators. During pressing, these particles compress uniformly and prevent excessive adhesive squeeze-out while maintaining consistent film thickness, allowing effective bond strength development without thickness control deterioration.
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 composition provides a continuous, uniform adhesive layer that prevents moisture vapor transmission and sound leakage, reduces installation time, and enhances bond strength, while also acting as an anti-fracture membrane and antimicrobial protector.
Implementation Method 1
a one-component moisture curable polymer system
Implementation Method 2
a plurality of irregularly shaped spacer particles of size 0.5 mm to 10 mm... which regulate the minimum thickness of the composition and enable a continuous uniform layer of adhesive to be applied
Implementation Method 3
exhibits controlled moisture vapor transmission
Implementation Method 4
sound abatement
Data Source
AI summary
An adhesive composition for adhesively bonding floor coverings to a variety of substrates. The composition includes 0.2 to 10 weight percent of a plurality of irregularly shaped spacer particles of size 0.5 mm to 10 mm; 10 to 50 weight percent of a moisture curable polymer system; and 40 to 90 weight percent of additives for modifying physical properties of the composition. The adhesive has a composition such that, when cured, results in an elastomeric film of uniform thickness that exhibits controlled moisture vapor transmission and sound abatement properties. A floor structure and a method for constructing the floor structure using the adhesive composition are also provided.