Composite Engineering – Direct Bonding of plastic PET Films by Plasma Irradiation

Endo, Tamio; Reddy, L. Srinivasula; Nishikawa, Hiroaki; Kaneko, Satoru; Nakamura, Yoshinobu; Endo, Kazuhiko

doi:10.1016/j.proeng.2017.01.315

Cited by 25 publications

(10 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This explains why the PET film did not bond strongly with the PET melt at a low T tool range (40–60 °C) in our experiments. An oxygen plasma treatment on the surface activates the PET by generating more reactive hydroxyl groups on the surface, hence making it possible to chemically bond to the molecule chain of the PET melt [ 10 , 11 ]. In the case of the PMMA melt, the bonding between the activated PET and the PMMA melt is even stronger at the same melt temperature, owing to the higher viscosity of the PMMA, which allows interdiffusion of chains near the interface, as well as the free sidechains in the PMMA molecules.…”

Section: Resultsmentioning

confidence: 99%

“…However, unlike PMMA, PET and PP are partially crystalline materials and do not show strong adhesion properties with polymer melts, e.g., PET film with PET or PMMA melt. Surface activation by gas plasma treatment [ 9 , 10 , 11 ] can be introduced prior to the BIM process to strengthen the bonding quality. By creating reactive oxygen components on the PET film surface we achieved strong bonding between the PET film and structured coating from both, PET and PMMA melts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Back Injection Molding of Sub-Micron Scale Structures on Roll-to-Roll Extrusion Coated Films

2021

View full text Add to dashboard Cite

Roll-to-roll extrusion coated films were bonded onto polymer parts by back injection molding (BIM). The polypropylene (PP) coated polyethylene terephthalate (PET) films were pre-patterned with microstructured V-shaped grooves with 3.2 µm and 53 µm width, and other geometries. Bonding on PET and poly(methyl methacrylate) (PMMA) parts was facilitated by either higher tool or melt temperatures but was particularly enhanced by applying a mild oxygen plasma to the backside of the PET film prior to injection of the polymer melt. Silver wires from conductive nanoparticle ink were embedded into the PP coating during the BIM process by controlled collapse of the V-grooves. Thus, the feasibility of combining standard carrier film materials for printed flexible electronics and packaging into a non-flat polymer part was demonstrated, which could be a helpful step towards the fabrication of polymer parts with surface functionality.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Back Injection Molding of Sub-Micron Scale Structures on Roll-to-Roll Extrusion Coated Films

2021

View full text Add to dashboard Cite

show abstract

“…The interaction between the PET substrate, CNF layer and PU is represented by the schematic shown in Figure b. The PET has −COOH and −OH groups mostly present on the surface . These surface groups and surface roughness of PET help in capturing the thin layer of PEO/CNF.…”

Section: Methodsmentioning

confidence: 99%

“…The PET has −COOH and −OH groups mostly present on the surface. 39 These surface groups and surface roughness of PET help in capturing the thin layer of PEO/CNF. Further, PEO could form a physical cross-linked network with the addition of polyurethane.…”

Section: Introductionmentioning

confidence: 99%

Heterolayered Composite of Carbon Nanofibers Sandwiched between Poly(ethylene terephthalate) and Polyurethane for Flexible Electromagnetic Shielding Application

Tahalyani

Akhtar

Kar

2021

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Multifunctional flexible films having properties of low filler dosing, light weight, small thickness, excellent environmental stability, and durability are highly demanded for absorption dominant electromagnetic interference (EMI) shielding in wearable electronic gadgets and in electronic packaging for civil, military, and space applications. For this, layered flexible films (FFs) of poly(ethylene terephthalate) (PET), carbon nanofibers (CNFs), and polyurethane (PU) were fabricated. The sheet resistance decreased from 48.9 × 10 3 to 8.3 × 10 2 Ω/cm 2 on increasing the CNF wt %, which resembled an improved 3D CNF network. This 3D CNF network was developed to achieve a total shielding efficiency (SE T ) of ∼25 dB (>99.9%) at 2 wt % for just 0.5 mm thickness of the film. Importantly, the fabricated film showed exceedingly consistent EMI shielding performance in a complex environment, with 22.9 dB and 23.6 dB SE T values even after 1 h of ultrasonication treatment in water and 10 000 mechanical bending cycles, respectively. Conveniently, owing to the increased interfacial polarization, conduction loss, and multiple reflections, these FFs exhibited efficient EMI shielding accommodating the absorption dominant mechanism. The EMI shielding was also numerically analyzed through CST microwave studio software over the broad frequency range of 1−18 GHz. This work contributes to the fabrication and study of layered flexible films to enhance mechanical properties and achieve high absorption dominant EMI shielding for future-generation portable/wearable gadgets and packaging applications.

show abstract

“…为主体材料, 但是其耐候性差, 因此需要在其表面层合具有良好耐候性、抗紫外辐射性能和化学稳定性的含氟树脂 [3,4] , 通常采用含氟树脂/PET/含氟树脂三层结构, 以满足长期室外使用的要求 [5] . 太阳能电池的各部分组件需用乙烯-醋酸乙烯酯共聚物(EVA)热熔胶粘接在一起, 因此要求各个组件都能与EVA胶膜有良好的粘接强度.…”

Section: 传统的背板材料采用聚对苯二甲酸乙二醇酯(Pet)作unclassified

Photo-graft modification of fluoropolymer surface and its bonding properties with EVA hot melt adhesive

Qi¹,

Wang²,

Zhao³

et al. 2018

Chin. Sci. Bull.

View full text Add to dashboard Cite

show abstract

Composite Engineering – Direct Bonding of plastic PET Films by Plasma Irradiation

Cited by 25 publications

References 19 publications

Back Injection Molding of Sub-Micron Scale Structures on Roll-to-Roll Extrusion Coated Films

Back Injection Molding of Sub-Micron Scale Structures on Roll-to-Roll Extrusion Coated Films

Heterolayered Composite of Carbon Nanofibers Sandwiched between Poly(ethylene terephthalate) and Polyurethane for Flexible Electromagnetic Shielding Application

Photo-graft modification of fluoropolymer surface and its bonding properties with EVA hot melt adhesive

Contact Info

Product

Resources

About