Novel Embossing System for Replicating Micro-Structures on Curved Surfaces
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S.-C. Nian
Abstract
Hot embossing is widely used to replicate micro-structures on polymer plate surfaces. The polymer parts of curved surfaces with micro-structures have important functions in various optoelectronic components. However, due to the high precision needed for embossing machines and mold manufacturing, achieving uniform pressure on curved surfaces during the embossing process is difficult. This study modified conventional hot embossing processes to develop an elastic bag embossing system (EBES) for replicating micro-structures on curved surfaces. The pressure equalizing properties of the elastic bag enabled uniform application of pressure on curved surfaces embossed with a general hot compression machine. For the EBES-assisted hot embossing process, a nickel stamper was attached to the elastic bag to compress and replicate micro-structures on the PC film covering the mold surface with single direction curve. This study also developed an EBES-assisted UV exposure process that used a PDMS soft-mold attached to the elastic bag surface to compress the UV curable photoresist covering the surface of the convex lens. Micro-structures were then formed by exposing the photoresist. Experimental results showed that the EBES with Ni stamper could successfully replicated micro-structures onto a 200 mm × 200 mm curved PC film and that the EBES-assisted UV exposure could successfully produced a 50 mm diameter fresnel lens on a convex profile with material of UV photoresist. Experimental tests of pressure-sensitive film showed that EBES enables uniform application of pressure on curved surfaces during the embossing process on standard hot compression machines. The experimental results confirm that the EBES developed in this study is an efficient and economical method for replicating micro-structures on curved surface.
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© 2014, Carl Hanser Verlag, Munich
Artikel in diesem Heft
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- 4th Multi-Functional Materials and Structure Conference
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- Novel Embossing System for Replicating Micro-Structures on Curved Surfaces
- Improved Interfacial Properties of PA6/DE Blends by DE-g-MAH Prepared through Ultrasound Assisted Extrusion
- Effect of Vetiver Grass Fiber on Soil Burial Degradation of Natural Rubber and Polylactic Acid Composites
- A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66
- Unlimited Shear as a Source of Information in Polymer Melt Processing
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- Enhance Slower Relaxation Process of Poly(ethyl acrylate) through Internal Plasticization
- PPS News
- PPS News
Artikel in diesem Heft
- Contents
- Contents
- 4th Multi-Functional Materials and Structure Conference
- Experimental and Computational Investigations of Creep Responses of Wood/PVC Composite Members
- Dispersion Enhancement of Multi-Walled Carbon Nanotubes in Nitrile Rubber
- Mold Filling Simulation Dependence on Material Data Input for Injection Molding Process of Natural Rubber Compound
- Effect of Nanoclay Addition on Morphology and Elastomeric Properties of Dynamically Vulcanized Natural Rubber/Polypropylene Nanocomposites
- Regular Contributed Articles
- A Study of Non-Isothermal Kinetic Reaction for Vulcanization of Chloride Butyl Rubber via Phenol Formaldehyde Resin
- Preparation and Properties of Fluorinated Acrylate Resin Film with Resisting Fluid for Dairy Packaging
- Three-Body Abrasive Wear Behavior of Needle-Punch Nonwoven Jute Fiber Reinforced Epoxy Composites
- Novel Embossing System for Replicating Micro-Structures on Curved Surfaces
- Improved Interfacial Properties of PA6/DE Blends by DE-g-MAH Prepared through Ultrasound Assisted Extrusion
- Effect of Vetiver Grass Fiber on Soil Burial Degradation of Natural Rubber and Polylactic Acid Composites
- A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66
- Unlimited Shear as a Source of Information in Polymer Melt Processing
- Feeding an Extruder of a Modified Feed Zone Design with Poly(vinyl chloride) Pellets of Variable Geometric Properties
- Enhance Slower Relaxation Process of Poly(ethyl acrylate) through Internal Plasticization
- PPS News
- PPS News
