Vulcanizable Ink Decal for Tire Sidewall Markings
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Solution Overview
Problem
Existing methods for decorating vulcanized rubber products, such as tire sidewalls, are costly, labor-intensive, and limited in customization options, with traditional techniques requiring significant investment and resulting in wastage and defective designs.
Innovation Solution
A decorative decal and adhesive system utilizing a carrier sheet with vulcanizable ink and a heat-activated adhesive, which is thermally transferred onto the rubber product, allowing for customizable designs without altering the tire's motif and enabling easy removal without damaging the tire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional extrusion or molding techniques are used for tire sidewall markings, then the markings are durable and integrated with the tire, but the process requires significant investment in materials, equipment and labor along with sizable wastage costs
Solution Approach 1:
The patent uses a decal that is a copy or replica of the desired marking design, transferred onto the tire sidewall rather than forming the marking directly through molding or extrusion. This allows the design to be created separately with minimal waste and then applied to the tire surface, eliminating the need for expensive molds and reducing material wastage from defective designs.
Solution Approach 2:
The marking process is divided into separate components: the decal itself (made from elastomeric ink), the carrier sheet for handling, and the adhesive layer for attachment. This segmentation allows each component to be optimized independently and enables the decal to be manufactured efficiently without requiring integrated molding equipment.
2Stability of the object's composition
If traditional extrusion or molding techniques are used for tire sidewall markings, then the markings are integrated with the tire structure, but the technique is extremely limiting in terms of customizable designs
Solution Approach 1:
The decal serves as a removable copy of the desired design that can be easily customized without requiring new molds or dies. Each decal can be independently designed and printed with elastomeric ink, allowing for extensive customization while maintaining the appearance of being integrated into the tire sidewall.
Solution Approach 2:
The patent enables design parameter changes by simply altering the decal design rather than requiring physical changes to molding equipment. The elastomeric ink decal can be printed with various designs, colors, and configurations, allowing rapid adaptation to different customization requirements without changing the fundamental application process.
3Strength
If adhesives are applied to the tire sidewall prior to thermal transfer of decals, then the bonding strength is improved, but the processing difficulty and expense of the tire increases
Solution Approach 1:
The patent combines the adhesive application and decal transfer operations into a single integrated step. The adhesive is applied to the carrier sheet along with the elastomeric ink decal, and both are thermally transferred together to the tire sidewall in one process, eliminating the need for separate adhesive application steps and reducing processing complexity.
Solution Approach 2:
The carrier sheet serves as an intermediary that holds both the elastomeric ink decal and the adhesive layer together during handling and transfer. This intermediary allows the adhesive and decal to be applied simultaneously and transferred as a single unit, simplifying the overall process while maintaining strong bonding.
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
This solution reduces costs and labor by eliminating additional adhesive application steps, allows for durable and visually appealing designs on smooth or raised surfaces, and enables decal removal without damaging the tire, minimizing wastage and improving customization options.
Implementation Method 1
The vulcanizable ink is vulcanized upon the support surface of the carrier sheet
Implementation Method 2
the heat-activated adhesive is also partially activated upon the display area
Implementation Method 3
The decorative decal having the partially activated adhesive is thermally transferred to the vulcanized rubber product
Data Source
AI summary
The system (10) includes at least one elastomeric, vulcanizable ink (18) that defines a decorative decal image (20). The decal image (20) has perimeter edges (22) and a display area (24) extending between the perimeter edges (22). The vulcanizable ink is vulcanized upon a carrier sheet (12). A heat-activated adhesive layer (26) is applied to overlie the display area (24) of the decal image (20), and the heat-activated adhesive layer (26) is also partially activated upon the display area (24) of the decal image (20). The decorative decal image (20) having the partially activated adhesive layer (26) is then thermally transferable to a vulcanized rubber product (28) such as a side wall (30) of an automotive tire (32), after which the carrier sheet (12) is removed.