Atmospheric Cold Plasma to Improve Printability of Polyethylene Terephthalate

Sandanuwan, Thisara; Hendeniya, Nayanathara; Attygalle, Dinesh; Amarasinghe, D.A.S.; Weragoda, Sampath; Samarasekara, A.M.P.B.

doi:10.1109/mercon52712.2021.9525797

Cited by 5 publications

(9 citation statements)

References 29 publications

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“…According to Song et al [67] adding CP to the PLA film surface increased polarity, which in turn boosted the film surface's hydrophilicity and wettability. Sandanuwan et al [51] found CA decreased with higher exposure times to CP. CA decreased faster when the biofilm was closer to the plasma jet tip.…”

Section: Contact Angle (Ca)mentioning

confidence: 97%

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Cold Plasma Technology in Food Packaging

et al. 2022

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Cold plasma (CP) is an effective strategy to alter the limitations of biopolymer materials for food packaging applications. Biopolymers such as polysaccharides and proteins are known to be sustainable materials with excellent film-forming properties. Bio-based films can be used as an alternative to traditional plastic packaging. There are limitations to biopolymer packaging materials such as hydrophobicity, poor barrier, and thermos-mechanical properties. For this reason, biopolymers must be modified to create a packaging material with the desired applicability. CP is an effective method to enhance the functionality and interfacial features of biopolymers. It etches the film surface allowing for better adhesion between various polymer layers while also improving ink printability. CP facilitates adhesion between two or more hydrophobic materials, resulting in significantly better water vapour permeability (WVP) properties. The sputtering of ionic species by CP results in cross-linkage reactions which improve the mechanical properties of films (tensile strength (TS) and elongation at break (EAB)). Cross-linkage reactions are reported to be responsible for the improved thermal stability of CP-treated biopolymers. CP treatment is known to decrease oxygen permeability (OP) in protein-based biopolymers. CP can also enable the blending of polymers with specific antimicrobial substances to develop active packaging materials. In this review article, we have presented an overview of the recent advancements of CP in the food packaging application. Furthermore, the influence of CP on the properties of packaging materials, and recent advancements in the modification of polymeric food packaging materials have been discussed.

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Section: Contact Angle (Ca)mentioning

confidence: 97%

“…The ability to transfer ink onto the material is low creating printing constraints. CP treatments offer a solution to these issues as the application increases water permeability for PET materials improving wettability properties without chemical alteration [51].…”

Section: Impact Of Cp On Modification Of Food Packaging Polymersmentioning

confidence: 99%

Cold Plasma Technology in Food Packaging

et al. 2022

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“…Plasma is produced by excitation of gas with electrical energy to make it highly reactive. This method is very effective in activating polymeric surfaces, Hegemann et al [8], Sandanuwan et al [9]. The effect of the treatment can last from 48 h to 7 days, as stated by Sundriyal et al [10].…”

Section: Introductionmentioning

confidence: 95%

Modelling of the Motion and Interaction of a Droplet of an Inkjet Printing Process with Physically Treated Polymers Substrates

Tofan

Jasevičius

2021

Applied Sciences

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This study examines the effect of energetic surface treatment on the adhesion strength of high-density polyethylene (HDPE), polypropylene (PP) and polyethylene terephthalate (PET) substrates. The purpose of this work is to determine the surface wettability of polymers suitable for food contact. These plastics have been treated with various pre-treatment methods to improve surface tension and good adhesion for inkjet printing and avoid any visual changes. It is important to determine the adhesion of the ink to the polymer surface to improve post-consumer recycling. Digital inks have been tested on various treated plastics to analyse coating properties and adhesion forces in accordance with DIN ISO 2409 standards. The impact of the inkjet droplet on the treated and non-treated surface was also investigated using the COMSOL computer simulation software.

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“…One of the most recent industrial applications of LTP is large-format UV–digital printing [ 13 , 14 , 15 ]. The stability of such printing depends on the choice of substrate materials and the printed color pattern.…”

Section: Introductionmentioning

confidence: 99%

Plasma Treatment of Large-Area Polymer Substrates for the Enhanced Adhesion of UV–Digital Printing

Fleischer,

Kelar Tučeková,

Galmiz

et al. 2024

Nanomaterials

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UV–digital printing belongs to the commonly used method for custom large-area substrate decoration. Despite low surface energy and adhesion, transparent polymer materials, such as polymethylmethacrylate (PMMA) and polycarbonate (PC), represent an ideal substrate for such purposes. The diffuse coplanar surface barrier discharge (DCSBD) in a novel compact configuration was used for substrate activation to improve ink adhesion to the polymer surface. This industrially applicable version of DCSBD was prepared, tested, and successfully implemented for the UV–digital printing process. Furthermore, wettability and surface free energy measurement, X-ray photoelectron spectroscopy, atomic force, and scanning electron microscopy evaluated the surface chemistry and morphology changes. The changes in the adhesion of the surface and of ink were analyzed by a peel-force and a crosscut test, respectively. A short plasma treatment (1–5 s) enhanced the substrate’s properties of PMMA and PC while providing the pre-treatment suitable for further in-line UV–digital printing. Furthermore, we did not observe damage of or significant change in roughness affecting the substrate’s initial transparency.

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Atmospheric Cold Plasma to Improve Printability of Polyethylene Terephthalate

Cited by 5 publications

References 29 publications

Cold Plasma Technology in Food Packaging

Cold Plasma Technology in Food Packaging

Modelling of the Motion and Interaction of a Droplet of an Inkjet Printing Process with Physically Treated Polymers Substrates

Plasma Treatment of Large-Area Polymer Substrates for the Enhanced Adhesion of UV–Digital Printing

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