Breathable Microfiber Textile Composite With Protected Vapor Pores
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Solution Overview
Problem
Existing textile composites used in upholstery and automotive applications suffer from reduced breathability due to polyurethane coatings, leading to moisture retention and sensitivity to soiling, and existing perforation methods make surfaces prone to dirt accumulation and water penetration.
Innovation Solution
A breathable microfiber textile composite with continuous pores in the base fabric, laminated with a water vapor-permeable microfiber top layer and an optional non-woven structural layer, ensuring moisture dissipation and protection from soiling, produced through perforation methods like spiked rollers or laser beams, with an adhesive that maintains vapor passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a polyurethane coating is applied to the base fabric, then the textile composite has desired appearance and structure, but breathability is significantly reduced
Solution Approach 1:
The patent applies porous polyurethane foam instead of solid polyurethane coating. The foam structure contains numerous interconnected cells that allow water vapor transmission while maintaining the protective and aesthetic functions of the polyurethane layer. This resolves the contradiction by providing both desired appearance/structure and breathability through the porous architecture.
Solution Approach 2:
The patent creates a composite structure combining base fabric, porous polyurethane foam, and microfiber nonwoven fabric. This multi-layer composite achieves breathability through the foam's porous structure while the fabric layers provide mechanical strength and appearance, resolving the contradiction between structural integrity and vapor permeability.
2Reliability
If the plastic material is perforated for gas escape, then breathability is improved, but the visible surface becomes punctured and sensitive to soiling and soaking
Solution Approach 1:
The patent moves the perforation function to the foam layer's internal structure rather than creating surface holes. The three-dimensional foam cell structure provides breathability through its internal porous network while keeping the external surface intact and smooth, eliminating sensitivity to soiling and soaking.
Solution Approach 2:
The patent uses porous polyurethane foam where the pores are distributed throughout the volume rather than being surface perforations. This internal porosity allows breathability without creating visible surface openings that would be sensitive to dirt and water penetration.
3Reliability
If a microfiber nonwoven fabric is laminated to the foam layer, then breathability is maintained through the cover layer, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines multiple functions into the porous foam layer: it provides structural support, aesthetic appearance, and breathability through its inherent porosity. The microfiber nonwoven fabric is laminated to enhance surface properties while the foam's internal structure maintains breathability, achieving functional integration without excessive complexity.
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 composite effectively dissipates moisture, prevents soiling, and simplifies cleaning by maintaining breathability and protecting underlying pores from water, making it suitable for seating and loungers while being wear-resistant and easy to produce.
Implementation Method 1
A top layer (2) of microfiber fabric (M), which is water vapor permeable, is laminated with adhesive (6) to the base fabric (B)
Implementation Method 2
The breathable microfiber textile composite has continuous pores in the layer of the base fabric. The pores pierce both the carrier layer and the foam layer at regular intervals
Data Source
Figure 1~2
Figure 3
AI summary
Microfiber textile composite (1) comprising a base fabric (B) consisting of a carrier layer (4) as a woven fabric, knitted fabric or fleece made of synthetic and/or natural materials and a foam layer (3) arranged on a surface of the carrier layer and based on Polyurethane foam and a cover layer (2) of microfiber fabric (M) which is laminated to the free surface of the foam layer by means of adhesive (7) and is permeable to water vapor, the microfiber textile composite (1) having continuous pores (7 ) at regular intervals for the passage of water vapor, so that the microfiber textile composite (1) retains its breathability. Process for producing the microfiber textile composite, with the steps: (i) perforating the base fabric (B) to produce the pores (6), (ii) laminating the cover layer (2) with the adhesive (7, 8) onto the base fabric ( b).