Cycling Chamois Pad Breathability via Cold Adhesive Joining
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chamois pads for cycling shorts suffer from poor breathability and rigid coupling points, leading to discomfort and reduced reliability over time due to continuous pressure on the saddle.
Innovation Solution
A chamois pad comprising a fabric layer, a soft polyurethane foam layer, a high-density polyurethane foam layer, and a breathable expanded polyurethane layer, joined by cold cross-linking adhesive, with anatomically contoured raised portions created through material removal processes, ensuring comfort and breathability without compressed or thermoformed rigid points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyurethane foam layers are heat-sealed and thermally bonded to cycling shorts, then the chamois pad provides protection and cushioning, but the breathability is reduced and rigid coupling points are created causing discomfort
Solution Approach 1:
The invention removes the thermal bonding process entirely, extracting the harmful effect of heat sealing that creates rigid coupling points. The layers are joined by mechanical means (staples or adhesive tape) instead of thermal bonding, eliminating the creation of rigid points while maintaining layer attachment and protective function.
Solution Approach 2:
The invention applies different joining methods to different areas: mechanical fastening (staples or adhesive tape) is used at specific locations rather than continuous thermal bonding across the entire surface. This creates localized attachment points that maintain breathability in non-attached areas while still providing secure layer coupling.
2Stability of the object's composition
If multiple layers are thermally bonded together, then the chamois pad structure is secure, but the comfort is reduced due to rigid points affecting breathability
Solution Approach 1:
The thermal bonding process is completely removed from the construction method. Instead of heat sealing layers together across the entire surface, the invention uses discrete mechanical fastening elements (staples or adhesive tape) applied at specific locations, eliminating rigid coupling points while maintaining adequate layer stability.
Solution Approach 2:
The invention uses materials and joining methods that maintain porosity and breathability. Mechanical fastening with staples or adhesive tape leaves the foam material's porous structure intact in most areas, allowing air circulation and moisture wicking to function effectively, unlike continuous thermal bonding which seals the pores.
3Reliability
If continuous pressure is applied on the saddle, then the chamois pad provides protection, but over time the rigid coupling points reduce reliability and increase discomfort
Solution Approach 1:
The invention eliminates thermal bonding and rigid coupling points that degrade under continuous pressure. By using flexible mechanical fastening (staples or adhesive tape), the structure remains adaptable to pressure changes without creating hard points that would cause discomfort or reduce reliability over time.
Solution Approach 2:
The invention creates a dynamic structure where the layers can move and adapt to pressure changes. Mechanical fastening allows the chamois pad to flex and conform to the cyclist's anatomy under saddle pressure, maintaining comfort and protection, whereas thermal bonding creates rigid structures that cannot adapt.
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 provides enhanced comfort and breathability, maintaining anatomical compatibility and preventing abrasions while eliminating rigid points, ensuring long-term softness and impact cushioning without post-forming adhesive bonding.
Implementation Method 1
The layers 11, 12, 13, 14 are mutually joined by cold cross-linking adhesive, so as to define a multilayer block 20
Implementation Method 2
a second intermediate layer 12 made of soft polyurethane foam
Implementation Method 3
a fourth layer 14 directed outwardly in the configuration for use, made of breathable filter foam, for protecting anatomical parts
Implementation Method 4
with the breathability and impact cushioning capabilities of the original materials
Data Source
Figure 1~2
Figure 3
AI summary
A chamois pad for cycling shorts (10), comprising: - a first layer (11) of fabric, directed toward a user in the configuration for use, - a second intermediate layer (12) made of soft polyurethane foam, - a third intermediate layer (13) made of high-density polyurethane foam, - a fourth layer (14) directed outwardly in the configuration for use, made of breathable filter foam, for protecting anatomical parts.