Some experimental studies on CO2 laser cutting quality of polymeric materials

Davim, J. Paulo; Barricas, Nuno; Conceição, Marta; Oliveira, Carlos

doi:10.1016/j.jmatprotec.2007.06.056

Cited by 126 publications

(75 citation statements)

References 5 publications

(8 reference statements)

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“…Typically, laser processing of polymers is performed using excimer lasers: 157-355 nm [2], 248 nm [3], 308 nm [4]; solid-state lasers with fundamental or harmonics generation: 395/790 nm [5], 532/1,064 nm [6], 1,064 nm [6,7]; and CO 2 lasers 10.6 μm [4,[8][9][10][11][12]. In terms of the laser pulse duration, both ultra-short (femtosecond [13], and picosecond [14]), as well as long (microsecond) or continuous operation lasers [8][9][10][11][12] can be utilized.…”

Section: Introductionmentioning

confidence: 99%

“…In terms of the laser pulse duration, both ultra-short (femtosecond [13], and picosecond [14]), as well as long (microsecond) or continuous operation lasers [8][9][10][11][12] can be utilized. The main motivation for the use of ultra-short pulses is the reduction of the heat-affected zone HAZ due to the shorter duration of the heat source, or the improvement of light absorption resulting from nonlinear effects such as multiphoton absorption [15].…”

Section: Introductionmentioning

confidence: 99%

“…There are many scientific articles presenting laser processing of various neat polymers (without fillers): for example polytetrafluoroethylene [8,14], polyethylene [5,9,10], polycarbonate [3,[9][10][11], PMMA [3,7,10,11], polyetheretherketone [3,14], as well as fiber-reinforced polymers [12,17], but there is still a lack of information on nylon grooving properties through vaporization by infrared lasers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The influence of organobentonite clay on CO2 laser grooving of nylon 6 composites

Antończak

Nowak

Szustakiewicz

et al. 2013

Int J Adv Manuf Technol

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The popular polycaprolactam (polyamide PA6), commonly referred to as nylon 6, widely used as a construction plastic, is not a typical material for micromachining by CO 2 laser vaporization. In this paper, we describe investigations of the pulsed CO 2 laser grooving of both the chemically pure and the organobentonite clay modified nylon 6. Our results indicate that doping of nylon 6 with nanoparticles of organophilized bentonite significantly improves the grooving ability, predictability of the process, and its quality. In order to determine the nature of the changes in the depth and width of the grooves as a function of the laser process parameters, theoretical modeling of the laser grooving of nylon was carried out. The basic parameters of the laser grooving process versus laser beam intensity, pulse repetition rate, scanning speed of the material and various compositions of the organophilized bentonite dopant are presented. Additionally, an example of a three-dimensional engraving/milling of tested materials as well as the impact of doping on the channel profile are examined. The modification of nylon 6 by appropriate doping with bentonite clay radically improves the quality of micromachining with a CO 2 laser.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of organobentonite clay on CO2 laser grooving of nylon 6 composites

Antończak

Nowak

Szustakiewicz

et al. 2013

Int J Adv Manuf Technol

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“…Laser cutting process parameters have been proven to have a major role on the quality features of the cutting edge as reported in [4][5][6][7][8]. Caiazzo et al [4] have investigated the application of CO 2 laser cutting on three thermoplastics, polyethylene (PE), polypropylene (PP) and polycarbonate (PC) with different thicknesses.…”

mentioning

confidence: 99%

“…However, they mentioned that cutting speed and compressed air pressure have more significant effect on the roughness than the effect of laser power. A preliminary study has been presented by Davim et al [7] to evaluate the effect of the processing parameters on the quality of the cut for several polymeric materials. It was evident that the Heat-affected zone (HAZ) increases with the increase in laser power but it decreases with increase in the cutting speed.…”

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confidence: 99%

Effect of process parameters and optimization of CO2 laser cutting of ultra high-performance polyethylene

2010

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The aim of this work is to relate the cutting edge quality parameters (responses) namely: upper kerf, lower kerf, ratio of the upper kerf to lower kerf and cut edge roughness to the process parameters considered in this research and to find out the optimal cutting conditions. The process factors implemented in this research are: laser power, cutting speed and focal point position. Design of experiment (DoE) was used by implementing Box-Behnken design to achieve better cut qualities within existing resources. Mathematical models were developed to establish the relationship between the process parameters and the edge quality parameters. Also, the effects of process parameters on each response were determine. Then, a numerical optimization was performed to find out the optimal process setting at which the quality features are at their desired values. The effect of each factor on the responses was established and the optimal cutting conditions were found.

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Microscopic and mechanical properties of semi‐crystalline and amorphous polymeric parts produced by laser cutting

Ghavidel

Shabgard

Biglari

2016

J of Applied Polymer Sci

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Microscopic and mechanical properties of polymeric parts are effective factors on their durability. Laser cutting is one of the most common methods for production of 2D polymeric parts. Experimental study of the mentioned properties of semi‐crystalline and amorphous polymeric parts after laser cutting is conducted in this research. Low density polyethylene (LDPE) and polystyrene (PS) are considered as semi‐crystalline and amorphous polymers, respectively. Laser power and cutting velocity were selected as input parameters of cutting process. According to microscopic observations, the microcracks, re‐solidified spots of molten material, and sink marks just appear in heat affected zone (HAZ) on amorphous polymer. Results also showed that the HAZ width and surface roughness values are smaller for semi‐crystalline polymer. For both polymers, decreasing of power and increasing of cutting velocity reduce the HAZ and surface roughness. In the case of mechanical properties, tensile strength of semi‐crystalline and amorphous polymers reduces after laser cutting. Results of experiments revealed that the extension of HAZ and deterioration of surface finish decrease tensile strength of parts. Therefore, lower power and higher cutting velocity condition is preferable for reaching the better mechanical properties. Furthermore, two separate mathematical models for each polymer are presented for prediction of tensile strength after laser cutting process. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44179.

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Some experimental studies on CO2 laser cutting quality of polymeric materials

Cited by 126 publications

References 5 publications

The influence of organobentonite clay on CO2 laser grooving of nylon 6 composites

The influence of organobentonite clay on CO2 laser grooving of nylon 6 composites

Effect of process parameters and optimization of CO2 laser cutting of ultra high-performance polyethylene

Microscopic and mechanical properties of semi‐crystalline and amorphous polymeric parts produced by laser cutting

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