Biodegradable Cellulose Adhesive Tape Substrate
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Solution Overview
Problem
Conventional adhesive tapes, particularly masking tapes, face issues of incomplete saturation, inhomogeneous production, and non-biodegradability, leading to imperfect sealing and environmental concerns due to their non-recyclable and non-compostable materials.
Innovation Solution
A cellulose fiber-based biodegradable substrate is developed, coated with an aqueous release coating containing a water-soluble polymer, a lactone with alkyl chains, and a crosslinking agent, which is applied continuously on a single production line, providing strength and tack properties compliant with manufacturing standards and certified biodegradability according to EN 13432.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional crepe paper is used as substrate for adhesive tapes, then mechanical properties and flexibility are achieved, but the material is not biodegradable and causes environmental pollution
Solution Approach 1:
The patent changes the chemical composition parameters of the substrate by using cellulose fibers with specific properties (length, fineness, purity) and treating them with natural substances like starch and gelatin to achieve biodegradability while maintaining mechanical performance
Solution Approach 2:
The patent creates a composite material structure by combining cellulose fibers with natural binders (starch, gelatin) and coatings to produce a biodegradable substrate that maintains the mechanical properties needed for adhesive tape applications
2Ease of manufacture
If saturation treatment is performed outside the production line, then flexibility in processing is achieved, but incomplete and inhomogeneous saturation occurs leading to imperfect sealing
Solution Approach 1:
The patent merges the saturation treatment step with the continuous production line process, integrating what was previously a separate post-processing step into the main manufacturing flow to ensure uniform application
Solution Approach 2:
The patent applies saturation treatment during the production process itself rather than as a subsequent step, performing the impregnation action preliminarily while the substrate is still being formed to ensure complete and uniform penetration
3Reliability
If multiple distinct steps are used for paper saturation and coating, then thorough treatment is achieved, but production complexity and costs increase
Solution Approach 1:
The patent combines multiple treatment steps (saturation, coating, drying) into a single continuous production line process, merging what were previously separate operations into one integrated system that achieves the same treatment completeness with reduced complexity
Solution Approach 2:
The patent creates a multi-functional production line that performs saturation, coating, and drying operations in sequence within a single continuous process, making the production system universal for handling multiple treatment requirements without needing separate dedicated equipment for each step
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 biodegradable substrate achieves comparable or superior performance to traditional crepe paper in terms of mechanical properties and peel strength, while ensuring environmental sustainability by being fully compostable and reducing production costs through a simplified process.
Implementation Method 1
a release coating... comprising: a) at least one water-soluble polymer (WSP) containing hydroxyl groups
Implementation Method 2
c) at least one crosslinking agent
Data Source
AI summary
A biodegradable cellulose fiber-based substrate, at least one side of which is coated with a release coating including: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, and b) at least one lactone substituted with at least one linear or branched and/or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms. The biodegradable substrate is certified biodegradable in accordance with EN 13432. A method of production thereof is also disclosed.