Replica Master Mold Segmentation for 3D Pattern Transfer
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Solution Overview
Problem
Existing replica master molds with single-layer flexible polymer films, such as COC, face distortion issues when heated to conform to three-dimensional shapes, leading to inaccuracies in transferring fine irregular patterns.
Innovation Solution
A replica master mold comprising a base material layer with flexibility and a surface shape body having a higher softening temperature, where the base material layer and surface shape body are separated by an intermediate layer, and the surface shape body is made of an inorganic compound, preventing distortion during deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-layer flexible polymer film is used as the replica master mold, then the mold has flexibility to conform to three-dimensional shapes, but the fine irregular pattern distorts when heated for deformation
Solution Approach 1:
The replica master mold is divided into two separate layers: a flexible base material layer and a surface shape body layer containing the fine irregular pattern. This segmentation allows each layer to perform its specific function independently - the base layer provides flexibility for conforming to 3D shapes, while the surface shape body maintains pattern accuracy during heating and deformation.
Solution Approach 2:
The invention uses a composite structure combining a flexible polymer base material with a separate surface shape body that has higher thermal stability. This composite approach allows the mold to exhibit both flexibility from the base material and thermal resistance to pattern distortion from the surface shape body, resolving the contradiction between adaptability and manufacturing precision.
2Shape
If the replica master mold is heated to deform conformally with three-dimensional objects, then the mold can conform to complex shapes, but the fine irregular pattern softens and distorts
Solution Approach 1:
By separating the mold into a base material layer and a surface shape body layer, the invention allows the base layer to undergo thermal deformation for conformal shaping while the surface shape body layer maintains its structural integrity and pattern accuracy due to its higher softening temperature.
Solution Approach 2:
Different parts of the mold have different thermal properties - the base material layer has lower softening temperature for flexibility and conformal deformation, while the surface shape body has higher softening temperature for pattern stability. This local differentiation of material properties resolves the contradiction between achieving conformal shape and maintaining pattern accuracy.
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 configuration allows for accurate transfer of fine irregular patterns without distortion, maintaining high transfer accuracy and preventing shape deformation, even when the replica master mold is deformed to conform to complex three-dimensional objects.
Implementation Method 1
when the polymer stamp is heated to deform in conformity with the shape of the formation object
Implementation Method 2
a softening temperature of the surface shape body is higher than a softening temperature of the base material layer
Data Source
AI summary
A replica master mold 10 comprises: a base material layer 11; and a surface shape body 12 formed on the base material layer 11 and having a fine irregular pattern, wherein a softening temperature of the surface shape body 12 is higher than a softening temperature of the base material layer 11.