Pneumatic Tyre Net Layer for Functional Material Removal
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Solution Overview
Problem
The strong adhesion of additional functional layers, such as sealant and sound-absorbing layers, to the innerliner of pneumatic tires complicates their removal during disposal, repair, or replacement, impairing disposal and maintenance operations.
Innovation Solution
Incorporating a net layer with a mesh structure between the innerliner and additional functional layers, allowing for easy removal without interfering with adhesion or tire functionality, and optionally using adhesive properties on the net layer for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional functional layers are strongly adhered to the innerliner using adhesive materials, then sealing and noise reduction functions are improved, but removal during disposal or repair becomes difficult
Solution Approach 1:
The patent introduces a net layer as a separate intermediate component between the additional functional layer and the innerliner. This segmentation allows the system to have strong adhesion during use while enabling easy removal by detaching the net layer, thus resolving the contradiction between reliable adhesion and ease of removal.
Solution Approach 2:
The net layer acts as an intermediary element that mediates between the additional functional layer and the innerliner. It provides the necessary adhesion during tire operation but can be easily removed later, facilitating both disposal and repair operations without compromising the original adhesion requirements.
2Reliability
If additional functional layers are applied directly to the innerliner, then tire functionality is improved, but disposal operations are impaired
Solution Approach 1:
By segmenting the additional functional layer into a net layer structure, the patent enables differentiated disposal of various materials. The net layer can be removed separately from the innerliner, facilitating easier and more efficient disposal operations while maintaining the functional integrity of the tire during its service life.
Solution Approach 2:
The net layer is designed to be easily discarded or recovered separately from the innerliner and additional functional materials. This allows for differentiated disposal where valuable materials can be recovered and reused, while simplifying the overall disposal process compared to removing directly adhered layers.
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
Facilitates the removal of additional layers at the end-of-life of the tire without affecting tire performance or adhesion, enabling efficient disposal and maintenance by interposing a removable net layer that does not interfere with the tire's operation or adhesion of the functional layers.
Implementation Method 1
The adhesion of such additional layers to the innerliner is guaranteed by means of the use of adhesive materials
Data Source
AI summary
Pneumatic tyre (1) comprising a carcass ply (11), two ring beads (12), a tread strip (10), a tread belt (15) comprising at least two tread plies (16), an innerliner (2) and an additional functional material layer (4,5) arranged between the innerliner (2) and the inner cavity (17) of the pneumatic tyre (1), wherein between the innerliner (2) and the layer of additional functional material (4,5) a net layer (3) is interposed, which facilitates the removal thereof during disposal at the end-of-life of the pneumatic tyre.