Laser transmission welding of Clearweld-coated polyethylene glycol terephthalate by incremental scanning technique

Wang, Y.Y.; Wang, A.H.; Weng, Zhikun; Xia, Haibin

doi:10.1016/j.optlastec.2016.01.008

Cited by 29 publications

(4 citation statements)

References 25 publications

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“…Some of the polymers are susceptible to laser light at this wavelength, creating carbonized dark marks on their surface. These include, among others, polycarbonate (PC) [18], polystyrene (PS) [19], and polyethylene terephthalate (PET) [20]. On the other hand, popular materials from the group of polyolefins, such as polyethylene (PE) or polypropylene (PP), do not absorb laser energy in the range of λ = 1064 nm, creating a blurred graphic symbol [21,22].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Selected Laser-Marking Parameters and Surface Conditions on White Polypropylene Moldings

2022

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Laser marking of polymer materials is a technology that is increasingly used in industry. Polypropylene (PP) shows a low ability to absorb electromagnetic radiation in the near-infrared range (λ = 1064 nm). The paper presents the influence of the surface condition of white-colored polypropylene moldings on the efficiency of their marking with a laser beam. In addition, the operation of the commercial laser marking additive (LMA) Lifolas M 117009 UN, intended to support the process of laser marking of polyolefin surfaces, was verified. The study is an attempt to combine laser operating parameters, material, and geometric properties of PP moldings to obtain the expected quality of graphic symbols. The test samples were made by injection molding method with the use of a specially designed modular injection mold. The molding cavities were prepared with various methods of metal processing, thanks to which obtained moldings differed in surface condition. The marking effects were assessed based on colorimetric tests and digital image analysis. The 0.5 wt% LMA content resulted in obtaining a graphic sign with high contrast in comparison to the background. The gradual increase in the modifier content resulted in a further increase in contrast. These values depended on the degree of surface finish of the samples, and therefore on the roughness parameters. Samples with a rough surface finish showed higher contrast compared to surfaces with a high surface finish. It was also found that for the analyzed moldings, the laser-marking process should be performed with the use of a low head velocity (450–750 mm/s) and a high concentration of the laser beam (0.03–0.05 mm).

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Section: Introductionmentioning

confidence: 99%

The Impact of Selected Laser-Marking Parameters and Surface Conditions on White Polypropylene Moldings

2022

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“…As a result, a mark is obtained with a large color difference from the polymer. Some polymers are sensitive to laser light and easily absorb laser energy to form carbonized dark marks, such as polystyrene (PS), polycarbonate (PC), polyethylene terephthalate, and polybutylene terephthalate . Other polymers are easy to foam and form light‐colored marks, such as polyformaldehyde and poly(methyl methacrylate) .…”

Section: Introductionmentioning

confidence: 99%

Effective Control of Laser‐Induced Carbonization Using Low‐Density Polyethylene/Polystyrene Multilayered Structure via Nanolayer Coextrusion

Cheng

You

Cao

et al. 2019

Macro Materials & Eng

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Controlled carbonization is very critical in improving the effect of laser‐induced patterns on a polymer surface. In the present work, the effects of a multilayered structure on the physical and laser‐marking properties of a low‐density polyethylene/polystyrene (LDPE/PS) multilayered film are studied. The multilayered film is prepared using nanolayer coextrusion and treated in air by scanning with a neodymium‐doped yttrium aluminum garnet (Nd:YAG) pulsed laser beam. Based on various analyses, the laser‐induced patterns on the LDPE/PS multilayered film are significantly different from those on a conventional LDPE/PS blend. Furthermore, a mechanism for controlling the carbonized area of a multilayered film is proposed. This study also provides an effective method to fabricate laser‐patterning polymer materials based on a multilayered structure. Nanolayer coextrusion will have broad application prospects in the field of polymer laser marking. Importantly, this work opens up a valuable and viable direction for the practical application of these multilayered polymer materials.

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“…For the Rotary Friction Welding, key factors for the strength are the higher burn-off length and the higher rotation speed [10]. For the laser welding, key factors for the strength determination are laser intensity and a scanning speed [11][12][13]. For the ultrasonic welding, key factors for the strength of the thermoplastic seam are a frequency and duration of frequency applying to welded material [14].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Failing load and Optimization of Hot Air Welding Parameters on PVC-Acrylic Coated Polyester Fabric by Taguchi and ANOVA Technique

Khaothong¹

2019

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There are several factors affecting the strength of welding seam through hot air for PVC-acrylic coated polyester fabrics. To obtain the most durability of the welding seam for practical use, the experimental design of this study adopts Taguchi method for determining a number of experiments. Each input parameter has five different levels. The result shows that the input parameters providing maximum failing load for welding in warp and weft directions are the following: the distance between a head of blower and workpiece (Dis) of 10 mm, the temperature of hot air (Tem) of 160 o C, the torque (Tq) of 9,000 N.mm, and the speed of hot air (Sha) of 4,000 mm/s. The maximum failing loads are 95.38 kN/m and 86.17 kN/m for warp direction and weft direction, respectively. After filtering the input parameters at the significance level of 0.05, the input parameters which significantly affect the strength of welding seam are the distance between a head of blower and workpiece, and the temperature of hot air. Additionally, the relationship between the input parameters and the failing load seams can be establishad. The comparison between the actual experimental data and the predicted values of the failing load for both welding directions shows that the average percentage error is less than 0.1% so that the forecast equation is appropriate for the explanation of the variables for this study and provide statistical reliability.

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Laser transmission welding of Clearweld-coated polyethylene glycol terephthalate by incremental scanning technique

Cited by 29 publications

References 25 publications

The Impact of Selected Laser-Marking Parameters and Surface Conditions on White Polypropylene Moldings

The Impact of Selected Laser-Marking Parameters and Surface Conditions on White Polypropylene Moldings

Effective Control of Laser‐Induced Carbonization Using Low‐Density Polyethylene/Polystyrene Multilayered Structure via Nanolayer Coextrusion

Analysis of Failing load and Optimization of Hot Air Welding Parameters on PVC-Acrylic Coated Polyester Fabric by Taguchi and ANOVA Technique

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