Abstract:Fresnel lenses are becoming more and more important because they are widely used as optical elements for concentrating solar power. Micro-hot embossing is a promising approach to fabricate Fresnel lenses. Precision optical elements must be more quickly and cheaply introduced to the market due to the pressure of global competition. The thermal conductivity of Aluminum (Al)-filled epoxy resins is lower than that of conventional mold steel materials. This work demonstrates a technique for fabricating hybrid rapid… Show more
“…For instance, Kuo and Chen 41 and Kuo and Lyu 42 presented a method to fabricate a hot embossing stamp fabricated from aluminium-filled epoxy, as shown in Figure 6. Moreover, Kuo and Chiang 43,44 investigated the effects of distinct backing materials on demoulding times during the hot embossing process. Likewise, Kuo and Wang 45,46 proposed a plasma surface modification method to manufacture precision micro-hot embossing moulds with high surface finishes.…”
Section: Also Notedmentioning
confidence: 99%
“…For instance, Kuo and Chen 41 and Kuo and Lyu 42 presented a method to fabricate a hot embossing stamp fabricated from aluminium-filled epoxy, as shown in Figure 6. Moreover, Kuo and Chiang 43,44 investigated the effects of distinct backing materials on demoulding times during the hot embossing process. Likewise, Kuo and Wang 45,46 proposed a plasma surface modification method to manufacture precision micro-hot embossing moulds with high surface finishes.Figure 6.Schematic diagrams of manufacturing hot embossing stamp: (a) Master model; (b) Designing cooling channels; (c) Pouring aluminium-filled epoxy resin; (d) Removal of mould frame; (e) Removal of master model; (f) Removal of cooling channels.…”
Section: Recent Investigations Of Epoxy Toolingmentioning
The technology of epoxy tooling, at present under continuous development, is used for the rapid manufacture of cost-effective tools for small batch production. It is a valid alternative with no need for expensive investment in metallic moulds for the development of new products. Current investigations are focused on improvements to the production system, improved tool performance, the cost reduction of moulds and tool manufacturing sustainability. In this paper, both the advantages and the disadvantages of epoxy tooling in injection moulding, wax injection, metal stamping and hot embossing are compared with conventional techniques. Following a brief introduction of rapid tooling technologies, the latest advances of epoxy tooling and their implementation in different manufacturing processes are all analysed. These developments refer to the production of new ad-hoc epoxy composites, increased productivity using conformal cooling channels, the reduction of the tooling manufacturing costs through waste reuse and the emerging industry 4.0 technologies for smart manufacturing and tooling. The main objective is to identify both the challenges facing epoxy tooling techniques and future research directions.
“…For instance, Kuo and Chen 41 and Kuo and Lyu 42 presented a method to fabricate a hot embossing stamp fabricated from aluminium-filled epoxy, as shown in Figure 6. Moreover, Kuo and Chiang 43,44 investigated the effects of distinct backing materials on demoulding times during the hot embossing process. Likewise, Kuo and Wang 45,46 proposed a plasma surface modification method to manufacture precision micro-hot embossing moulds with high surface finishes.…”
Section: Also Notedmentioning
confidence: 99%
“…For instance, Kuo and Chen 41 and Kuo and Lyu 42 presented a method to fabricate a hot embossing stamp fabricated from aluminium-filled epoxy, as shown in Figure 6. Moreover, Kuo and Chiang 43,44 investigated the effects of distinct backing materials on demoulding times during the hot embossing process. Likewise, Kuo and Wang 45,46 proposed a plasma surface modification method to manufacture precision micro-hot embossing moulds with high surface finishes.Figure 6.Schematic diagrams of manufacturing hot embossing stamp: (a) Master model; (b) Designing cooling channels; (c) Pouring aluminium-filled epoxy resin; (d) Removal of mould frame; (e) Removal of master model; (f) Removal of cooling channels.…”
Section: Recent Investigations Of Epoxy Toolingmentioning
The technology of epoxy tooling, at present under continuous development, is used for the rapid manufacture of cost-effective tools for small batch production. It is a valid alternative with no need for expensive investment in metallic moulds for the development of new products. Current investigations are focused on improvements to the production system, improved tool performance, the cost reduction of moulds and tool manufacturing sustainability. In this paper, both the advantages and the disadvantages of epoxy tooling in injection moulding, wax injection, metal stamping and hot embossing are compared with conventional techniques. Following a brief introduction of rapid tooling technologies, the latest advances of epoxy tooling and their implementation in different manufacturing processes are all analysed. These developments refer to the production of new ad-hoc epoxy composites, increased productivity using conformal cooling channels, the reduction of the tooling manufacturing costs through waste reuse and the emerging industry 4.0 technologies for smart manufacturing and tooling. The main objective is to identify both the challenges facing epoxy tooling techniques and future research directions.
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