3D Printing Release Layer for Support Removal and Lamination Strength
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Solution Overview
Problem
Existing layer fabrication methods for 3D objects face challenges in removability of unnecessary portions like supporting structures and molds, and often result in insufficient strength in the lamination direction due to limitations in material combinations and melting processes.
Innovation Solution
A novel 3D printing method involving a laminated body forming process with a release layer and a support structure, where the release layer is used to stabilize the object's shape and facilitate easy removal of unnecessary portions, and a heating and cooling process to enhance bonding between layers while maintaining shape integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water-soluble particles with special structure are used as support material, then ease of removal of supporting structure is improved, but material combination flexibility deteriorates
Solution Approach 1:
The invention changes the key parameter from water solubility to density difference. By using support material with density significantly different from the object material, the supporting structure can be easily removed through density-based separation processes, while allowing flexible combination of various materials without being constrained by solubility requirements.
Solution Approach 2:
The invention replaces the chemical removal mechanism (water dissolution) with a physical separation mechanism (density-based separation). This substitution allows for easier removal of supporting structures while expanding material selection, as the separation relies on density differences rather than chemical solubility properties.
2Strength
If object is heated to melt lamination interface, then strength in lamination direction is improved, but shape stability deteriorates due to excessive melting
Solution Approach 1:
The invention introduces a release layer as an intermediary between the object and support material. This release layer has specific thermal properties that allow heat to be applied for bonding without directly affecting the support material structure, enabling controlled melting at lamination interfaces while maintaining overall shape stability.
Solution Approach 2:
The invention applies local quality by creating distinct regions with different thermal properties: the object and lamination interfaces are designed to melt and bond under heating, while the support material maintains its structural integrity. This localized thermal response allows strength improvement without compromising shape stability.
3Ease of operation
If release layer is added to stabilize shape and facilitate removal, then removability of unnecessary portions is improved, but device complexity increases
Solution Approach 1:
The invention merges multiple functions into the release layer: it provides shape stabilization during fabrication, enables easy removal of supporting structures through density-based separation, and facilitates object extraction. By combining these functions into a single component with specific density properties, the system achieves improved removability without proportionally increasing complexity.
Solution Approach 2:
The release layer serves multiple purposes: it acts as a shape-stabilizing mold during fabrication, provides a separation interface for removing support material based on density differences, and enables easy object extraction. This multi-functionality reduces the need for separate specialized components, balancing improved removability with manageable complexity.
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 improves the removability of unnecessary portions and strengthens the object in the lamination direction, allowing for more robust and efficiently fabricated 3D structures with enhanced material selection flexibility.
Implementation Method 1
a heating and cooling process of heating the laminated body to a temperature at which the object melts and then cooling the laminated body to solidify the object
Implementation Method 2
heating the laminated body to a temperature at which the object melts
Implementation Method 3
cooling the laminated body to solidify the object
Implementation Method 4
the release layer is used to stabilize the object's shape
Implementation Method 5
heating the laminated body to a temperature at which the object melts to strengthen a bonding between layers
Data Source
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AI summary
A fabrication method includes laminating a fabrication material (111) to form an object, and applying release material (112) on a surface of the object (101) to form a release layer on the surface of the object (101). A surface free energy of the release material (112) is equal to or smaller than 25 mN / m.