Tire Labeling Adhesive Sheet with Segmented Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pressure sensitive adhesive sheets for tires face issues when used with labeling apparatuses, including adhesive bleeding and failure to stick properly due to the non-flat, asperity surface of tires, leading to running failures and adhesive composition adhering to the apparatus.
Innovation Solution
A pressure sensitive adhesive sheet with a specific configuration including a release material, a first and second pressure sensitive adhesive layer, and substrates, where the second substrate's outline encloses both adhesive layers with a controlled shortest distance between them, ensuring efficient sticking and preventing adhesive bleeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a soft pressure sensitive adhesive composition with increased coating thickness is used to improve embedding ability in tire surface, then the adhesive ability to tire surface is improved, but adhesive bleeding occurs during die cutting and stripping
Solution Approach 1:
The pressure sensitive adhesive layer is divided into two distinct layers: a first pressure sensitive adhesive layer with high adhesive ability for tire surface embedding, and a second pressure sensitive adhesive layer with low adhesive ability to prevent bleeding during die cutting and stripping. This segmentation allows each layer to perform its specific function without interfering with the other.
Solution Approach 2:
Different regions of the adhesive system have different adhesive properties tailored to specific functions. The first adhesive layer near the tire contact surface has high adhesion for embedding, while the second adhesive layer near the release sheet has low adhesion to prevent sticking during processing. This local differentiation of adhesive quality resolves the contradiction between embedding ability and bleeding prevention.
2Reliability
If pressure sensitive adhesive composition is used to stick labels to tires, then labels are attached to tire surface, but adhesive composition adheres to labeling apparatus causing running failures
Solution Approach 1:
The adhesive system is segmented into two layers with different adhesive characteristics. The second pressure sensitive adhesive layer, positioned between the release sheet and the first adhesive layer, has low adhesive ability that prevents it from sticking to the labeling apparatus, while the first adhesive layer maintains high adhesive ability for reliable tire attachment.
Solution Approach 2:
The second pressure sensitive adhesive layer acts as an intermediary layer between the release sheet and the first adhesive layer. This intermediary layer with low adhesive ability prevents direct contact and adhesion between the adhesive composition and the labeling apparatus, thereby avoiding running failures while still allowing the first adhesive layer to perform reliable label attachment.
3Productivity
If continuum of labels is produced by winding up die-cut labels as a roll, then production efficiency is improved, but adhesive composition oozes out and adheres to back surface of release sheet
Solution Approach 1:
The adhesive system is segmented into two functional layers. The second pressure sensitive adhesive layer with low adhesive ability is positioned to face the release sheet during winding, preventing adhesive oozing and adhesion to the release sheet back surface, while allowing continuous production efficiency.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Provided is a pressure sensitive adhesive sheet for tires that enables continuous and efficient labeling on tires using a labeling apparatus. The pressure sensitive adhesive sheet includes a release material (C), a first pressure sensitive adhesive layer (B1), a first substrate (A1), a second pressure sensitive adhesive layer (B2), and a second substrate (A2), in this order, and satisfies Requirement (1): in a planar view of the pressure sensitive adhesive sheet for tires, the outline of the first pressure sensitive adhesive layer (B1) exists inside the outline of the second substrate (A2), and Requirement (2): the shortest distance (X) between the outline of the second substrate (A2) and the outline of the second pressure sensitive adhesive layer (B2) is 0.35 mm or more.