Carpet Tile Multi-Layer Construction for Minimal Subfloor Preparation
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Solution Overview
Problem
Traditional carpet tile installations face issues such as curling, doming, mold, mildew buildup, and the need for extensive subfloor preparation, which can lead to installation delays and safety hazards.
Innovation Solution
A carpet tile design featuring a tufted primary backing with a pre-coat layer, bonded to an extruded polymer secondary backing layer, and a cushion with a reinforcing scrim layer embedded in a polymer layer, which enhances dimensional stability, moisture wicking, and ease of installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional carpet tiles are installed without extensive subfloor preparation, then installation time and labor are reduced, but the carpet tiles may curl or dome due to internal forces
Solution Approach 1:
The carpet tile incorporates a pre-coat layer applied to the backside of the primary backing before installation. This preliminary action creates initial adhesion to the subfloor, counteracting internal forces that cause curling or doming before the tile is even installed, thereby maintaining flatness while enabling rapid installation without extensive subfloor preparation
Solution Approach 2:
The carpet tile uses a composite construction with multiple layers including primary backing, pre-coat layer, secondary backing, and cushion layer. This composite structure combines materials with different properties to provide both dimensional stability (resisting curling/doming) and installation ease, resolving the contradiction between quick installation and maintaining flatness
2Ease of manufacture
If carpet is installed on top of a wet subfloor, then installation preparation is minimized, but mold and mildew may develop and adhesive strength decreases
Solution Approach 1:
The carpet tile incorporates a porous cushion layer that allows moisture vapor to escape from the subfloor through the carpet structure. This porosity prevents moisture accumulation that would otherwise promote mold and mildew growth, enabling installation on wet subfloors without compromising indoor air quality or adhesive performance
Solution Approach 2:
The pre-coat layer acts as an intermediary barrier between the wet subfloor and the carpet layers above. It provides initial adhesion while allowing moisture management, preventing direct contact between moisture and adhesive that would cause adhesive failure or mold growth, thus enabling installation on minimally prepared subfloors
3Stability of the object's composition
If multiple secondary polymer layers and stabilizing layers are added to cushioned carpet tiles, then dimensional stability and cushioning are improved, but weight and shipping cost increase
Solution Approach 1:
The carpet tile uses a strategic composite construction with a primary backing, pre-coat layer, extruded polymer secondary backing, and cushion layer with embedded reinforcing scrim. This composite structure achieves dimensional stability and cushioning performance through the synergistic combination of layers with different functions, avoiding the need for excessive material weight while maintaining structural integrity
Solution Approach 2:
The cushion layer is segmented into a polymer matrix with an embedded reinforcing scrim layer. This segmentation provides dimensional stability through the scrim's tensile strength while the polymer matrix provides cushioning, achieving both goals without requiring multiple separate heavy polymer layers, thus reducing overall weight
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 effectively prevents curling and doming, reduces mold and mildew growth, and allows for minimal subfloor preparation, resulting in a safer, more durable, and easier-to-install carpet tile product.
Implementation Method 1
the polyester layer allows any moisture content in the subfloor to be wicked away from the subfloor and released through the seams of the carpet tile
Implementation Method 2
The opposite, backside of the primary backing may be coated with a pre-coat layer to lock the carpet tufts into the primary backing
Data Source
AI summary
A carpet tile and process for making the same, wherein the carpet tile comprises a facecloth having a plurality of face yarns tufted through a primary backing, an extruded polymer secondary backing layer, and a cushion, comprising a reinforcing scrim layer within a polymer layer. The top surface and bottom surface of the carpet tile are defined by the facecloth and the cushion, respectively. A polymer-based resin is extruded onto the facecloth to form an at least substantially uniform secondary backing layer, and the cushion is laid onto the extruded polymer secondary backing layer while the extruded polymer secondary backing layer remains above a softening temperature for the resin. The entire multi-layer web is then passed through a nip to embed the reinforcing scrim layer into the extruded polymer secondary layer, and the entire web is chilled.