Resource efficient low power laser cleaning of compact discs for material reuse by polycarbonate recovery

Leone, Claudio; Genna, Silvio; Caggiano, Alessandra

doi:10.1016/j.cirpj.2015.01.005

Cited by 24 publications

(8 citation statements)

References 35 publications

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“…It results in a very low power consumption, which in the present case reaches about 120 W at the maximum power output (30 W). The latter characteristic is very important when environment, as well as process sustainability is considered [29,30]. In the adopted laser, for a fixed average power, pulse energy (Pe) and pulse power (Pp) depend on pulse frequency, as reported in Fig.…”

Section: Characteristicsmentioning

confidence: 99%

“…Although this kinds of laser source were specifically developed for marking [26], they are so flexible to be adopted in different application, such as: micromachining operations [10,11,13,18] or in surface treatments [27,28,29], nevertheless, here it was adopted because of the good absorption of alumina at the Yb:YAG fundamental wavelength of λ¼1064 nm, the higher pulse power (up to 20 kW), the possibility to have the maximum power (30 W) at all Table 1 Main properties of adopted Al 2 O 3 (declared by the producer).…”

Section: Equipmentmentioning

confidence: 99%

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Experimental investigation on laser milling of aluminium oxide using a 30W Q-switched Yb:YAG fiber laser

Leone

Genna

Tagliaferri

et al. 2016

Optics & Laser Technology

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Section: Characteristicsmentioning

confidence: 99%

Section: Equipmentmentioning

confidence: 99%

Experimental investigation on laser milling of aluminium oxide using a 30W Q-switched Yb:YAG fiber laser

Leone

Genna

Tagliaferri

et al. 2016

Optics & Laser Technology

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“…The move away from CDs and DVDs toward digital versions reduces demand for metals (aluminium, silver, gold alloy) that are used in very small quantities for the reflective layer and are typically not recoverable through end-of-life treatment processes [100]. Although digital technology has facilitated the emergence of servicisation and the rental model (discussed below), this is frequently in addition to ownership of a device [101].…”

Section: Digitisationmentioning

confidence: 99%

“Slowing” and “Narrowing” the Flow of Metals for Consumer Goods: Evaluating Opportunities and Barriers

et al. 2018

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Metal resources are essential materials for many consumer products, including vehicles and a wide array of electrical and electronic goods. These metal resources often cause adverse social and environmental impacts from their extraction, supply and disposal, and it is therefore important to increase the sustainability of their production and use. A broad range of strategies and actions to improve the sustainability of resources are increasingly being discussed within the evolving concept of the circular economy. This paper uses this lens to evaluate the opportunities and barriers to improve the sustainability of metals in consumer products in Australia, with a focus on strategies that "slow" and "narrow" material flow loops. We have drawn on Allwood's characterisation of material efficiency strategies, as they have the potential to reduce the total demand for metals. These strategies target the distribution, sale, and use of products, which have received less research attention compared to the sustainability of mining, production, and recycling, yet it is vitally important for changing patterns of consumption in a circular economy. Specifically, we have considered the strategies of product longevity (life extension, intensity of use, repair, and resale), remanufacturing, component reuse, and using less material for the same product or service (digitisation, servicisation, and light-weighting). Within the Australian context, this paper identifies the strategies that have the greatest opportunity to increase material efficiency for metal-containing products (such as mobility, household appliances, and personal electronics), by evaluating current implementation of these strategies and identifying the material, economic, and social barriers to and opportunities for expanding these strategies. We find that many of these strategies have been successfully implemented for mobility, while applying these strategies to personal electronics remains the biggest challenge. Product longevity emerged as the strategy with the most significant opportunity for further implementation in Australia, as it is the most broadly applicable across product types and has significant potential for material efficiency benefits. The barriers to material efficiency strategies highlight the need for policies that broaden the focus beyond closing the loop to "slowing" and "narrowing" material loops.

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“…Interaction between laser and matter were investigated widely with different laser material processing technology using different laser sources and materials, such as laser drilling [4,5], laser ablation [6][7][8], laser surface modification [9,10], laser cleaning of compact disc by laser polycarbonate recovery [11,12], etc.…”

Section: Introductionmentioning

confidence: 99%

Laser etching of aluminum thin film on polyimide: Simulation and experimental studies

Liu¹,

Xiong²,

Wang³

et al. 2015

Surface and Coatings Technology

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Resource efficient low power laser cleaning of compact discs for material reuse by polycarbonate recovery

Cited by 24 publications

References 35 publications

Experimental investigation on laser milling of aluminium oxide using a 30W Q-switched Yb:YAG fiber laser

Experimental investigation on laser milling of aluminium oxide using a 30W Q-switched Yb:YAG fiber laser

“Slowing” and “Narrowing” the Flow of Metals for Consumer Goods: Evaluating Opportunities and Barriers

Laser etching of aluminum thin film on polyimide: Simulation and experimental studies

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