Smoking Filter Adhesive System for Bonding Strength
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Solution Overview
Problem
Filters for smoking articles face challenges in maintaining adequate adhesive strength during manufacturing and over time, leading to potential detachment issues.
Innovation Solution
A filter design incorporating a cylindrical filter main body wrapped with a sheet, utilizing a combination of first and second hot melt type adhesives and aqueous adhesives at specific positions, ensuring continuous adhesion between the filter and the sheet, which compensates for the quick-drying nature of hot melt adhesives with the longer-drying aqueous adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If hot melt type adhesive is used for adhering the sheet to the filter main body, then adhesive strength is achieved quickly during manufacturing, but adhesive strength decreases after a predetermined time has elapsed
Solution Approach 1:
The patent combines two different adhesive types (hot melt type adhesive and aqueous adhesive) into a single adhesive application system. The hot melt type adhesive provides rapid initial bonding during manufacturing, while the aqueous adhesive provides long-term durability. This merging of adhesive functionalities resolves the contradiction between quick setting and long-term durability.
Solution Approach 2:
The patent uses a composite adhesive system consisting of two distinct adhesive materials with different properties. The hot melt type adhesive (rapid-setting) and aqueous adhesive (durable) work together in a composite manner, where each adhesive contributes its superior property to the overall bonding system, achieving both quick setting and long-term durability.
2Duration of action of stationary object
If aqueous adhesive is used alone, then long-term adhesive strength is maintained, but adhesive setting time is excessive for efficient manufacturing
Solution Approach 1:
The patent merges the advantages of two adhesive types by applying both hot melt type and aqueous adhesives together. The hot melt type adhesive provides immediate bonding that enables efficient manufacturing, while the aqueous adhesive ensures long-term durability, thus resolving the contradiction between manufacturing efficiency and adhesive durability.
Solution Approach 2:
The hot melt type adhesive performs the preliminary bonding action during manufacturing, providing immediate adhesion that enables efficient production. The aqueous adhesive then provides sustained long-term bonding. This preliminary action by the hot melt adhesive eliminates the manufacturing efficiency problem while the aqueous adhesive ensures durability.
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
This configuration maintains high adhesive strength both during and after manufacturing, preventing sheet detachment from the filter main body, thus ensuring a high-quality smoking article with improved durability and flavor filtration.
Implementation Method 1
a first hot melt type adhesive and a first aqueous adhesive provided at a position between the filter main body and the sheet; and a second hot melt type adhesive and a second aqueous adhesive provided at a position between the one end portion and the other end portion
Data Source
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AI summary
A smoking article includes: a filter main body that is cylindrical; a sheet that forms a cylindrical body having one end portion and another end portion opposite to and overlapping the one end portion to wrap the filter main body; a first hot melt type adhesive and a first aqueous adhesive provided at a position between the filter main body and the sheet; and a second hot melt type adhesive and a second aqueous adhesive provided at a position between the one end portion and the other end portion.