Microcellular Multi-Layer Bottle Thermal Insulation
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Solution Overview
Problem
Acetone-containing bonding agents in dental applications tend to overboil due to low vapor pressure and heat transfer from user handling, making exact dosing difficult with conventional plastic bottles that have poor thermal conductivity and high stiffness.
Innovation Solution
A container with a multi-layer wall comprising an inner layer, a barrier layer, and an outer layer, where the inner and/or outer layers have a microcellular structure with fluid bubbles produced by physically or chemically introduced blowing agents, providing improved thermal insulation and reducing heat transfer from the user's hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the wall thickness of the plastic bottle is increased to reduce thermal conductivity, then thermal insulation is improved, but the stiffness of the bottle increases making exact dosing more difficult
Solution Approach 1:
The patent applies a multi-layer composite wall structure consisting of an inner layer, barrier layer, and outer layer. The inner and/or outer layers have a microcellular structure with closed cells containing blowing agent residues, while the barrier layer provides oxygen and water vapor barrier properties. This composite structure achieves improved thermal insulation through the microcellular structure while maintaining appropriate stiffness and dosing precision through the multi-layer design.
Solution Approach 2:
The patent utilizes a microcellular structure with closed cells in the inner and/or outer layers. These cells have a diameter of 1-100 μm and contain residues of physically and/or chemically introduced blowing agents. The porous microcellular structure provides thermal insulation by trapping air pockets that reduce heat transfer, while the closed cell structure maintains structural integrity and appropriate stiffness for precise dosing.
2Object-affected harmful factors
If the wall thickness is increased to prevent heat transfer to acetone-containing formulation, then overboiling is prevented, but the bottle requires harder pressing making exact dosing difficult
Solution Approach 1:
The multi-layer composite wall structure with microcellular inner and/or outer layers provides enhanced thermal insulation to prevent heat transfer to acetone-containing formulations, preventing overboiling. The barrier layer between the microcellular layers provides additional thermal resistance. This structure achieves protection against overboiling while maintaining appropriate wall stiffness for precise dosing through the optimized multi-layer design.
Solution Approach 2:
The patent changes the physical parameters of the wall structure by introducing a microcellular structure with specific cell diameters (1-100 μm) and controlling the density through blowing agent content. This parameter change achieves improved thermal insulation to prevent acetone overboiling while maintaining the mechanical properties needed for precise dosing operation.
3Temperature
If a multi-layer wall with microcellular structure is used to improve thermal insulation, then heat transfer is reduced, but the device complexity increases
Solution Approach 1:
The patent implements a multi-layer composite wall structure with an inner layer, barrier layer, and outer layer, where the inner and/or outer layers have a microcellular structure. This composite design achieves improved thermal insulation through the microcellular structure while the barrier layer provides additional functional benefits. The complexity is managed through integrated manufacturing processes for creating the multi-layer structure with embedded microcellular features.
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 multi-layer wall design reduces thermal conductivity, prevents overboiling of acetone-containing compositions, and allows for easier dosing by reducing stiffness, while maintaining chemical barrier properties and weight reduction.
Implementation Method 1
A container (30), in particular a bottle, for storing and optionally for applying a liquid, solvent-containing composition having a multi-layer wall (20) at least in part to completely having a microcellular structure (24) with thermally insulating effect
Implementation Method 2
the multi-layer wall (20) comprising at least an inner layer (21), a barrier layer (22) and an outer layer (23), the barrier layer (22) being adapted to form a barrier for oxygen and/or water vapour
Implementation Method 3
the microcellular structure (24) having fluid bubbles (25), and the fluid bubbles (25) being product of a physically and/or chemically introduced blowing agent
Data Source
AI summary
The invention relates to a container (30), in particular a bottle (30), for storing and optionally applying a liquid, solvent-containing compositions, having a multi-layer wall (20) comprising at least one side wall of the bottle, the bottom of the bottle and optionally a discharge region at the opening of the bottle,the multi-layer wall (20)comprising at least an inner layer (21), a barrier layer (22) and an outer layer (23), the barrier layer (22) being adapted to form a barrier for oxygen and/or water vapour, the inner layer (21) and/or the outer layer (23) having a microcellular structure (24), the microcellular structure (24) having fluid bubbles (25), and the fluid bubbles (25) being product of a physically and/or chemically introduced blowing agent. Moreover, the invention relates to a method for producing a container, in particular a bottle (30) for storing and optionally applying a liquid, solvent-containing composition, having a multi-layer wall (20), as well as use of a multi-layer wall (20) for producing the container (30).