Fiber Sleeve Edge Covering for Moisture-Resistant Stability
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Solution Overview
Problem
Cardboard sleeves for viscous materials in cartridge guns are prone to moisture absorption, leading to deformation and loss of stability due to hygroscopic properties, especially in humid environments.
Innovation Solution
The sleeve edges are covered by a material portion that extends over both the inner and outer sides of the sleeve wall, providing protection against moisture ingress, which can be made from the same or different materials, and optionally serving as a label.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sleeve is made of cardboard or paper material to be sustainable and recyclable, then environmental friendliness and recyclability are improved, but moisture resistance deteriorates causing deformation and loss of stability
Solution Approach 1:
The sleeve combines cardboard material with a protective coating layer to create a composite structure. The cardboard provides sustainability and recyclability, while the coating layer provides moisture resistance, thus resolving the contradiction between environmental friendliness and moisture resistance.
Solution Approach 2:
A thin film or coating layer is applied to the sleeve surface to act as a barrier against moisture. This flexible shell protects the hygroscopic cardboard material from direct contact with moisture while maintaining the sleeve's overall flexibility and sustainability characteristics.
2Ease of manufacture
If the sleeve is made from natural fiber materials, then ease of manufacture and cost are improved, but resistance to harmful factors (moisture) deteriorates
Solution Approach 1:
A protective coating or film is applied to the natural fiber sleeve to create a moisture barrier. This thin film prevents moisture from reaching the hygroscopic fibers, preventing swelling and deformation while maintaining the ease of manufacture and cost-effectiveness of using natural fiber materials.
Solution Approach 2:
The sleeve is designed as a disposable product with a simple structure that combines inexpensive natural fiber material with a cost-effective protective coating. This approach prioritizes low cost and ease of manufacture while providing sufficient protection against moisture for the intended short-term use.
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
Enhances moisture resistance, maintaining the sleeve's shape and stability, allowing it to withstand humid conditions without deforming.
Implementation Method 1
paper and cardboard react strongly to moisture due to their hygroscopic properties. They absorb and hold moisture from their environment
Data Source
AI summary
The invention relates to a sleeve for receiving a filling product, wherein the sleeve has a proximal end comprising a proximal abutting edge, and a distal end comprising a distal abutting edge, and a sleeve wall extending between the proximal end and the distal end and delimiting a receiving space for the filling product, wherein the sleeve wall comprises an inner side facing the receiving space and an outer side facing away from the receiving space and wherein the sleeve is produced from a material comprising fibers. The invention is characterized in that at least one abutting edge of the sleeve is covered by a material portion resting against the sleeve wherein, in a region adjoining the abutting edge, the material portion covering the abutting edge rests against both the inner side and the outer side of the sleeve wall.