Reusable Self-Adhesive Textile Print Medium With Washable Adhesive
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Solution Overview
Problem
Existing self-adhesive media are often limited to single-use applications, with adhesive layers becoming damaged and losing strength after detachment, and lack durability against weather and insect infestation.
Innovation Solution
A self-adhesive textile medium impregnated with hydrophobing agents and fungicides, featuring a thermoplastic or polymeric adhesive layer with a printable lacquer, suitable for multiple uses, easy cleaning, and digital printing, with a protective film for durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a self-adhesive medium is used multiple times, then the adhesive layer accumulates dirt residues and loses adhesive strength, but single-use media are discarded after one application
Solution Approach 1:
The adhesive layer composition is changed by using a specific mixture of thermoplastics and polymers with defined glass transition temperatures and melting ranges, enabling the adhesive to maintain its bonding properties through multiple uses and cleaning cycles
Solution Approach 2:
The adhesive layer is formulated as a composite material combining at least two thermoplastics or polymers with complementary properties, creating a material that resists degradation from dirt accumulation and cleaning while maintaining adhesive effectiveness
2Force
If the adhesive layer is made highly adhesive, then it bonds strongly to substrates, but substrate residues become trapped in the adhesive layer upon detachment
Solution Approach 1:
The adhesive layer's physical parameters are optimized by selecting materials with specific glass transition temperatures (50-150°C) and melting ranges (80-120°C), allowing strong bonding during use while enabling clean release and residue-free detachment under controlled conditions
3Reliability
If the medium is made durable against weather and insects, then it can be used outdoors long-term, but the material composition becomes more complex
Solution Approach 1:
Specific protective functions are extracted and applied only where needed: the textile fabric is impregnated with hydrophobing agents and fungicides to provide weather and insect resistance, while the adhesive layer composition is simplified to focus on reusability and cleaning properties
Solution Approach 2:
The overall medium is structured as a composite system with functionally optimized layers: a protected textile substrate for durability and an independently optimized adhesive layer for reusability, allowing each component to be simplified while maintaining overall performance
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 medium can be reused multiple times, regaining full adhesive strength after cleaning, and maintains effectiveness in various environments and applications, including outdoor and decorative uses.
Implementation Method 1
textile fabric (1) impregnated with a hydrophobing agent
Implementation Method 2
textile fabric (1) impregnated with a hydrophobing agent and a fungicide
Implementation Method 3
adhesive layer (4), which consists of a mixture of at least two thermoplastics or polymers
Data Source
AI summary
The invention relates to a self-adhesive print medium, comprising a textile layer and two impregnating layers, each thereof located on a side of the textile layer, a lacquer layer that is printable, applied to one of the impregnating layers, a pressure sensitive adhesive layer that can be reapplied repeatedly, applied to the impregnating layer that is opposite of the one with the lacquer layer, a protective layer, arranged on the adhesive layer and formed of a sheet, having a very low adhesive strength compared to the pressure sensitive adhesive layer.