Composite Molded Article Rigid Body Portion Membrane Integrity
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Solution Overview
Problem
Composite molded articles with flexible main body portions face challenges in stably connecting gas permeable membranes, as deformation during attachment and detachment operations can damage the membranes or compromise their gas permeability and sealing properties.
Innovation Solution
A composite molded article design featuring a main body portion with a plate-shaped bottom wall and peripheral wall made of elastically deformable polymer material, incorporating a gas permeable membrane that covers a vent hole and is connected to the bottom wall, with rigid body portions at the outer peripheral part of the membrane to prevent deformation and maintain membrane integrity during attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the main body portion is formed of elastically deformable polymer material to enable easy attachment and detachment, then the ease of operation is improved, but the gas permeable membrane may be damaged or its sealing property may deteriorate due to deformation during attaching and detaching operations
Solution Approach 1:
The bottom wall portion is divided into two distinct regions: a flexible outer peripheral part that enables attachment/detachment operations, and a rigid body portion at the center that protects the gas permeable membrane. This segmentation allows each region to perform its specific function without compromising the other.
Solution Approach 2:
Different parts of the bottom wall portion are given different mechanical properties: the outer peripheral part is made elastically deformable for flexibility during attachment/detachment, while the central region is made rigid to protect the membrane. This local differentiation of material properties resolves the contradiction between overall flexibility and local protection.
2Adaptability or versatility
If the main body portion is made flexible to allow deformation during attaching and detaching, then the adaptability is improved, but the manufacturing precision of the gas permeable membrane connection may deteriorate
Solution Approach 1:
The bottom wall is segmented into a flexible outer region for adaptation during attachment and a rigid central region that maintains precise geometric dimensions for the membrane connection, ensuring manufacturing precision is preserved at the critical connection point.
Solution Approach 2:
The central region where the gas permeable membrane connects is given rigid properties to maintain manufacturing precision, while the outer peripheral part is made flexible to provide adaptability during attachment operations, allowing each zone to optimize its local function.
3Ease of manufacture
If the gas permeable membrane is connected to a flexible main body portion, then the ease of manufacture is improved, but the reliability of the membrane connection may worsen during deformation
Solution Approach 1:
The bottom wall portion is segmented into a flexible outer region and a rigid body portion at the center. The gas permeable membrane is connected to this rigid body portion, which maintains connection stability during deformation while still allowing integral formation with the flexible outer region for ease of manufacture.
Solution Approach 2:
The connection region for the gas permeable membrane is localized to the rigid body portion, which provides stable connection properties, while the outer flexible region maintains ease of manufacture through integral formation. This local quality differentiation resolves the contradiction between ease of manufacture and connection reliability.
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 design ensures the gas permeable membrane and its connecting portion remain undamaged and functional, maintaining gas permeability and sealing properties even when the main body portion is deformed, facilitating easy maintenance and repeated use.
Implementation Method 1
a gas permeable membrane which is permeable to gas but is impermeable to liquid
Implementation Method 2
a gas permeable membrane which is permeable to gas but is impermeable to liquid
Implementation Method 3
the main body portion is formed of an elastically deformable polymer material
Data Source
AI summary
A composite molded article comprising: a main body portion including, a bottom wall portion formed of an elastically deformable polymer material, and a peripheral wall portion protruding so as to surround a peripheral edge of the bottom wall portion and formed of an elastically deformable polymer material; a vent hole passing through the bottom wall portion; and a gas permeable membrane integrally connected to the main body portion and is permeable to gas but is impermeable to liquid, wherein the gas permeable membrane is arranged to the bottom wall portion so as to cover the vent hole and connected to the bottom wall portion at a periphery of the vent hole, and wherein the bottom wall portion includes at least one rigid body portion which is more difficult to be deformed than the bottom wall portion at an outer peripheral part of the gas permeable membrane.