Vacuum-Compressed Insulation Filling Material for Construction Gaps
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Solution Overview
Problem
Existing filling methods for construction gaps, such as foam-in-place methods, face challenges including low applicability to vertical surfaces, poor air tightness, and the need for additional equipment and chemical foaming agents, which complicate site cleanliness and require additional finishing treatments.
Innovation Solution
A heat-insulating filling method using an expansion material inserted into an elastic outer cover material, evacuated to compress the material, and then expanded to fill gaps between construction members without additional apparatus, providing heat insulation, sound insulation, and fireproofing properties without chemical foaming agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mono-fluid type foaming agent is used, then convenience of use is improved, but foaming velocity is low and air tightness property deteriorates
Solution Approach 1:
The foaming agent is divided into two separate fluid components (Component A and Component B) that are mixed at the time of application. This segmentation allows each component to be optimized independently - Component A provides the base foam structure while Component B accelerates the foaming reaction, thereby achieving both ease of use and high air tightness property simultaneously
2Reliability
If a two-fluid type foaming agent is used, then air tightness property is improved, but device complexity and workability deteriorate due to additional apparatus requirements
Solution Approach 1:
The two separate foaming components and the mixing apparatus are merged into a single pre-mixed foam cartridge. The cartridge contains both Component A and Component B in separate chambers with a common dispensing mechanism, eliminating the need for separate storage drums and mixing equipment while maintaining the high air tightness properties of two-fluid systems
Solution Approach 2:
The foam cartridge employs a nested structure where Component A and Component B are housed in separate internal chambers within a single outer cartridge. The dispensing mechanism is nested at the tip, allowing both components to be delivered simultaneously through a single nozzle without requiring external mixing apparatus
3Ease of operation
If a mono-fluid type foaming agent is used, then ease of operation is improved, but foaming quality and cell structure deteriorate
Solution Approach 1:
The optimal ratio of Component A to Component B is pre-determined and the components are pre-positioned in the cartridge in precise proportions. This preliminary preparation ensures that when the foam is dispensed, the chemical reaction occurs at the ideal stoichiometric ratio, producing uniform cell structure and high foaming quality without requiring complex on-site mixing control
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 method allows for easy and efficient filling of construction gaps with improved insulation and fireproofing properties, maintaining site cleanliness and eliminating the need for additional treatments, while avoiding the use of chemical foaming agents.
Implementation Method 1
opening the stopper to flow air through the nozzle and expanding the expansion material through the air
Implementation Method 2
compressing the expansion material by evacuating the outer cover material
Data Source
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Figure 5
AI summary
A filling material, according to the present invention, comprises: an outer cover material having elasticity; an expansion material which is inserted into the inside of the outer cover material, and which is compressed when the outer cover material is vacuum-absorbed; a nozzle which is provided on one end of the outer cover material and draws in air so as to vacuum-absorb the inside of the outer cover material, or into which air is injected in order to expand the expansion material inside the outer cover material; and a stopper for maintaining the inside of the outer cover material in a vacuum state when the nozzle is blocked while the inside of the outer cover material is vacuum-absorbed.