Thermally fusible sheet material with biodegradable bonding compound
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Solution Overview
Problem
Current thermally fusible sheet materials for the textile industry face challenges in achieving high resistance to washing and dry cleaning while maintaining biodegradability and compostability, and they often compromise on properties like softness, durability, and care stability.
Innovation Solution
A thermally fusible sheet material is developed using a backing ply with a bonding compound structure that includes polyalkylene succinates as hotmelt adhesives, which provides high bond strength and stability even after multiple care treatments, and is suitable for use as interlining, lining, or outer fabric in clothing and other textile products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional hotmelt adhesives are used to achieve high bond strength and washing resistance, then bonding performance is improved, but biodegradability and compostability are compromised
Solution Approach 1:
The patent changes the chemical composition parameters of the hotmelt adhesive from conventional non-biodegradable polymers to polyalkylene succinates with specific molecular structures that enable both high bond strength and biodegradability. The succinate ester groups in the polymer chain provide controlled degradation while maintaining adhesive performance.
Solution Approach 2:
The bonding compound structure uses a composite formulation combining polyalkylene succinates with complementary additives and modifiers that enhance both the adhesive properties and biodegradation characteristics, creating a material system that satisfies conflicting requirements for strength and environmental compatibility.
2Reliability
If biodegradable materials are used to maintain environmental compatibility, then biodegradability is improved, but washing and dry cleaning resistance deteriorate
Solution Approach 1:
The patent optimizes the molecular weight, glass transition temperature, and chemical structure parameters of the polyalkylene succinate to achieve a balance where the material maintains structural integrity during washing and dry cleaning while remaining biodegradable. Specific parameter ranges are selected to prevent premature degradation during use.
3Strength
If conventional bonding compounds are used to ensure durability and care stability, then mechanical properties are improved, but softness and tactile properties deteriorate
Solution Approach 1:
The bonding compound is formulated with spatially differentiated properties where the polyalkylene succinate provides durability and stability in the bonding interface, while surface-modifying additives and plasticizers are distributed to maintain softness and tactile comfort on the fabric surface, creating locally optimized zones within the coating structure.
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 use of polyalkylene succinates in the bonding compound structure ensures high bond strength and stability to washing and dry cleaning, maintaining the material's biodegradability and compostability, while also offering good tactile and optical properties, making it suitable for high-quality textile products.
Implementation Method 1
The bonding compound enables permanent bonding of the interlining to a further substrate
Implementation Method 2
the bonding compound generally includes at least one hotmelt adhesive... being thermoplastic polymers, they can be melted reversibly
Data Source
AI summary
A thermally fusible sheet material, comprising a backing ply composed of a textile material and bearing a bonding compound structure, wherein the bonding compound structure comprises at least one polyalkylene succinate as hotmelt adhesive, and a process for making the same.