Hot-melt adhesive resin composition rapid crosslinking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hot-melt adhesive agents require lengthy heating or light energy for crosslinking, and when exposed to moisture, they need special storage conditions, making them difficult to store and use efficiently.
Innovation Solution
A hot-melt adhesive resin composition comprising modified polyolefin, solid phenol resin, and a crosslinking agent, with specific ratios and types of components that allow for rapid crosslinking at elevated temperatures without the need for special storage conditions, forming a strong adhesive bond.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional hot-melt adhesive agents are used to achieve crosslinking reaction, then adhesive force is improved, but heating time increases and storage becomes difficult
Solution Approach 1:
The patent changes the chemical parameters of the adhesive composition by incorporating specific crosslinking agents (isocyanate compounds, polyamines, or oxazoline compounds) and controlling the functional group equivalents (1.0-5.0 times relative to modified polyolefin). This chemical parameter optimization enables rapid crosslinking at 100-200°C for 5-15 minutes while maintaining strong adhesive force, resolving the contradiction between adhesive strength and heating time.
Solution Approach 2:
The patent creates a composite adhesive system combining modified polyolefin (A), solid phenol resin (B), and crosslinking agents (C) in specific ratios. This composite formulation synergistically enhances both adhesive force and crosslinking speed, allowing the system to achieve rapid bonding without requiring extended heating periods or special storage conditions.
2Loss of time
If high reactivity hot-melt adhesive agents are used to reduce crosslinking time, then heating time is reduced, but storage conditions become more restrictive
Solution Approach 1:
The patent optimizes the functional group equivalent ratio of crosslinking agents to 1.0-5.0 times relative to modified polyolefin, creating a balanced reactivity profile. This parameter control ensures the adhesive remains stable during storage while achieving rapid crosslinking (5-15 minutes) when heated to 100-200°C, eliminating the need for special storage conditions like low temperature or light shielding.
Solution Approach 2:
The patent employs readily available crosslinking agents (isocyanate compounds, polyamines, oxazoline compounds) that can be stored under normal conditions and mixed with the adhesive composition just before use. This approach eliminates the need for specialized storage infrastructure while maintaining high reactivity during the brief 5-15 minute heating period.
3Ease of operation
If conventional adhesive compositions are used, then storage is simplified, but crosslinking requires lengthy heating or special equipment
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating crosslinking agents in controlled functional group equivalents (1.0-5.0 times relative to modified polyolefin). This creates a system that stores easily under normal conditions but achieves rapid crosslinking at 100-200°C for 5-15 minutes, significantly improving productivity without requiring special crosslinking equipment.
Solution Approach 2:
The patent replaces complex mechanical crosslinking systems (requiring special equipment, extended heating, or multiple steps) with a chemically optimized composition that crosslinks rapidly through controlled chemical reactions. The specific formulation of modified polyolefin, phenol resin, and crosslinking agents enables fast autoclave-free crosslinking, substituting complex mechanical/thermal systems with simplified chemical bonding.
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 rapid adhesion at 100° C to 200° C for 5 to 15 minutes, maintains high adhesive force, and is easy to store without requiring low temperature or light shielding storage, ensuring durability and stability.
Implementation Method 1
In order to proceed with a crosslinking reaction, the conventional hot-melt adhesive agent may require a long heating step or a light energy irradiating step
Implementation Method 2
The present invention relates to a hot-melt adhesive resin composition and a hot-melt adhesive resin laminate
Data Source
AI summary
A hot-melt adhesive resin composition includes a modified polyolefin in which a functional group is introduced into a polyolefin, a solid phenol resin, and a crosslinking agent, wherein the content of the modified polyolefin is 10 parts by mass or more and 40 parts by mass or less, based on 100 parts by mass of the total of the modified polyolefin and the solid phenol resin, and the modified polyolefin and the crosslinking agent are mixed so that a functional group possessed by the crosslinking agent is more than 1.0 equivalent and 5.0 equivalents or less, based on 1.0 equivalent of a functional group possessed by the modified polyolefin.