Embossed Soccer Ball Panels Thermal Bonding
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Solution Overview
Problem
Conventional hand-stitched and thermo-bonded soccer balls face issues with high manufacturing costs, material usage, and transportation efficiency due to exposed stitches and bulkiness, respectively.
Innovation Solution
A method involving cutting and embossing panels with determined stitch lines, machine stitching, and subsequent heat and pressure molding to create a robust and durable soccer ball with minimal external stitch exposure, using a bladder and panels made from laminated materials like PVC, EPDM foam, and fabric.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hand stitching is used to join panels, then the ball can be manufactured with traditional methods, but the manufacturing cost increases and production time extends to two to four days
Solution Approach 1:
The patent replaces the mechanical hand stitching process with a thermal bonding system that uses heat and pressure to join panels. The bonding machine applies controlled thermal energy to activate adhesive layers between panels, eliminating the need for manual needle and thread operations. This substitution of mechanical stitching with thermal processing directly reduces both labor costs and production time while maintaining joint strength.
Solution Approach 2:
The patent changes the bonding parameters from mechanical (stitch tension, needle penetration) to thermal (temperature, pressure, time). By controlling thermal parameters during the bonding process, the system achieves consistent panel joining without the time-consuming manual operations of hand stitching. The thermal bonding parameters can be precisely controlled and automated, significantly improving productivity while reducing costs.
2Ease of manufacture
If hand stitching is used with multiple layers of cloth and latex adhesive, then the ball can be constructed traditionally, but material consumption increases significantly
Solution Approach 1:
The patent uses composite panel structures with integrated adhesive layers that are thermally activated. Instead of applying multiple layers of cloth and latex adhesive separately during assembly, the panels are pre-fabricated with bonded composite structures. This reduces material waste by optimizing the adhesive application and eliminating excess layers that would be used in traditional hand-stitched construction.
Solution Approach 2:
The thermal bonding process replaces the need for excessive latex adhesive and multiple cloth layers required in hand stitching. The controlled thermal activation of adhesive layers provides sufficient bonding strength without requiring the abundant material application typical of traditional methods, thereby reducing material consumption and waste.
3Ease of manufacture
If conventional stitching is used, then the ball can be assembled, but exposed stitches on the surface lead to quicker abrasion and reduced durability
Solution Approach 1:
The thermal bonding system replaces mechanical stitching that creates exposed surface threads with a seamless thermal bond. The heat-activated adhesive creates a continuous bonded surface without protruding stitches, eliminating the weak points where abrasion would concentrate. This substitution directly improves durability by removing the exposed stitch elements that cause premature wear in traditionally stitched balls.
Solution Approach 2:
The patent applies local thermal bonding at specific panel junctions to create smooth, flush transitions without exposed stitching. The bonding process creates locally optimized joint quality where the adhesive forms a seamless connection between panels, eliminating the surface irregularities and exposed threads that would otherwise be present in mechanically stitched areas. This local quality enhancement prevents abrasion at critical stress points.
4Reliability
If thermo bonding is used to eliminate exposed stitches, then durability improves, but transportation costs increase due to inability to deflate balls
Solution Approach 1:
The patent uses controllable thermal bonding parameters that create bonds strong enough for durability but flexible enough to allow ball deflation. By optimizing the temperature, pressure, and bonding time parameters, the system creates joints that maintain structural integrity during use yet permit the ball to be deflated for compact transportation. This parameter optimization resolves the contradiction between bond strength and deflation capability.
Solution Approach 2:
The bonding system creates dynamically adaptable joints that can accommodate both rigid structural requirements during play and flexible deflation requirements during transportation. The thermal bonds provide sufficient rigidity for durability during use but maintain enough elasticity to allow volume reduction when deflated, enabling cost-effective transportation while preserving durability benefits.
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 method reduces manufacturing costs, enhances durability and performance, and improves transportation efficiency by creating a uniformly shaped ball with reduced stitch exposure and superior abrasion resistance compared to traditional methods.
Implementation Method 1
applying heat and pressure at the stitch lines for embossing the plurality of panels
Implementation Method 2
applying heat and pressure at the stitch lines for embossing the plurality of panels
Implementation Method 3
molding the soccer ball by applying heat and external pressure to the soccer ball
Implementation Method 4
molding the soccer ball by applying heat and external pressure to the soccer ball
Implementation Method 5
internal pressure due to the air in the soccer ball
Data Source
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AI summary
A sports ball having a high-performance cover formed from a plurality of embossed panels. The panels embossed at 2-3 mm from the edges of each of the panels. High tension stitching applied at the embossed regions for formulating a high performance soccer ball.