Starch Adhesive Composition for Fast-Setting Paper Core Bonding
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Solution Overview
Problem
Existing aqueous adhesive compositions, such as dextrin or starch solutions, do not provide fast setting times, leading to poorer productivity in high-speed industrial processes for manufacturing paper cores and tubes.
Innovation Solution
An aqueous adhesive composition comprising amylomaltase-treated starch or maltodextrin and ammonium zirconium carbonate, which provides a balance between adhesive properties and fast setting times, is developed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If aqueous solutions of dextrin or starch are used as adhesive compositions, then environmental friendliness is improved, but setting time increases (becomes slower)
Solution Approach 1:
The patent modifies the chemical structure of starch through amylomaltase treatment, transforming native starch into a modified starch with altered gelatinization and setting properties. This parameter change in molecular structure enables the starch to achieve fast setting times while maintaining environmental friendliness, resolving the contradiction between using eco-friendly adhesives and achieving rapid setting.
Solution Approach 2:
The invention creates a composite adhesive system combining amylomaltase-treated starch with specific additives (borax, boric acid, or zinc borate) in controlled ratios. This composite formulation synergistically combines the environmental benefits of starch-based adhesives with the fast-setting properties enabled by the modified starch structure and additive interactions, achieving both ecological sustainability and rapid bonding performance.
2Productivity
If PVAc dispersions are used to achieve fast setting times, then productivity is improved, but environmental friendliness deteriorates
Solution Approach 1:
The patent employs starch-based adhesives that are biodegradable and environmentally friendly, replacing the persistent PVAc dispersions. The modified starch formulation is designed to deliver rapid setting performance comparable to PVAc, allowing the industry to adopt short-living, biodegradable adhesive solutions that maintain productivity while reducing environmental impact.
Solution Approach 2:
Through amylomaltase treatment and controlled modification of starch parameters, the invention achieves setting kinetics comparable to PVAc dispersions. The modified starch exhibits altered gelatinization temperature, viscosity profile, and bonding characteristics that enable fast setting times, thus matching the productivity benefits of PVAc while eliminating its environmental drawbacks.
3Object-affected harmful factors
If native starch is used in adhesive compositions, then environmental friendliness is improved, but adhesive performance and setting time deteriorate
Solution Approach 1:
The patent applies amylomaltase treatment to starch before formulating the adhesive composition, performing a preliminary chemical modification that enhances the starch's adhesive properties. This pre-treatment alters the starch molecular structure to improve bonding strength and setting characteristics, ensuring that the environmentally friendly starch-based adhesive achieves reliable performance comparable to synthetic alternatives.
Solution Approach 2:
The invention systematically modifies starch parameters through enzymatic treatment, controlling the degree of modification to optimize adhesive properties. By adjusting starch concentration, modification level, and additive ratios, the patent achieves a balance between environmental friendliness and adhesive reliability, creating a starch-based adhesive that meets industrial performance requirements.
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 composition achieves a setting time of 29 seconds, enhancing production speed and productivity in core-winding processes.
Implementation Method 1
which allows for rapid bonding and improved productivity by forming thermoreversible gels in low concentrations
Implementation Method 2
an aqueous adhesive composition comprising: a) an amylomaltase-treated starch or an amylomaltase-treated maltodextrin; and b) ammonium zirconium carbonate (AZC)
Data Source
AI summary
The present invention relates to an aqueous adhesive composition comprising: —a) an amylomaltase-treated starch or an amylomaltase-treated maltodextrin; and —b) ammonium zirconium carbonate.