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Know the SCOR for a winning strategy of experimentation J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-03-14 Mark J Anderson
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Global food contact regulation updates for first quarter 2024 J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-03-12 Huqiu Zhang
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Development of a multilayer film for the first US Food and Drug Administration cleared aseptically-produced intravenous solution bags with a short history of key medical device milestones J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-02-28 Len Czuba
Flexible intravenous solution containers (IV bags) were introduced to the marketplace in the early 1970s. These new containers were designed to replace glass IV bottles and were quickly adopted widely for delivering medical solutions to patients throughout the world. The 40 years during which commercially available IV solutions in glass bottles were used, the healthcare industry grew dramatically with
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Flexible packaging past, present and future: Reflections on a century of technology advancement J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-02-26 Barry A Morris
Since its inception nearly 100 years ago, flexible packaging has seen tremendous growth due to its ability to meet packaging needs at the lowest cost and with the least amount of material usage. The modern era of flexible packaging began in the early twentieth century with the introduction of cellophane, a transparent “wonder” film which enabled the development of large distribution channels of pre-packaged
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Improvement of PLA-PVA/chitosan nanocomposite laminate film for packaging via crosslinking with electron beam irradiation: Mechanical, thermal and antimicrobial analysis J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-02-16 Thawanrat Chaisit, Punnanee Sumpavapol, Thitirat Rattanawongwiboon, Kittisak Jantanasakulwong, Thorsak Kittikorn
This research investigated and developed a laminate packaging film of poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVA) containing modified chitosan nanoparticles (MCSNPs) treated with 3-(trimethoxysilyl)propyl methacrylate silane (TMSPM) which functioned both as a reinforcement and as an antimicrobial filler. Electron beam irradiation caused crosslink between the PVA and MCSNP molecules via the
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Developing a novel konjac flour/poly-vinyl alcohol composite film: Preparation, properties and characterization J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-01-08 Shuang Lang, Xin Zhang, Guowei Liu, Liangjun Xiao, Hui Wang, Xiaojian Zhou, Guanben Du
Developing bio-based plastic has become an important strategy for solving environmental pollution. In this study, konjac flour (KF) and poly-vinyl alcohol (PVA) as main film-forming substances with added citric acid (CA), glutaraldehyde (GA) and glycerin, were used to prepare bio-based composite films via solution casting. How the PVA polymer amount affected the composite films including mechanical
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State-of-the-art epoxy vitrimer nanocomposites with graphene, carbon nanotube and silica—fundamentals and applications (radiation shielding, sensing and corrosion resistance) J. Plast. Film Sheeting (IF 3.1) Pub Date : 2024-01-04 Ayesha Kausar, Ishaq Ahmad
Recent research is shifting towards adopting recyclable and sustainable plastics instead of traditionally used thermosetting materials. Accordingly, vitrimers behave both as thermoplastics as well as thermosetting polymers. Inimitable vitrimer polymers have been developed with dynamically crosslinked structures enhancing the durability, reprocessing, and mechanical and chemical stability features.
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Blown film stability for low, medium, and high molecular weight polylactic acid and their tensile properties J. Plast. Film Sheeting (IF 3.1) Pub Date : 2023-01-30 Daniel C Licea-Saucedo, Denis Rodrigue, Erick O Cisneros-López, Rubén González-Núñez
Three poly (lactic acid) (PLA) resins with molecular weight (Mw) equal to 55 (3251D), 125 (L105) and 163 (LX175) kg/mol were characterized in terms of capillary viscosity, mechanical and thermal pr...
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Effect of nanoclay and nano-calcium carbonate content on the properties of polybutylene succinate/nanoparticle composites J. Plast. Film Sheeting (IF 3.1) Pub Date : 2023-01-15 Kantima Chaochanchaikul, Chuntip Sakulkhaemaruethai
How nanoparticle type and content affect polybutylene succinate (PBS) properties were investigated by varying nanoclay and calcium carbonate nanoparticles (nanoCaCO3) from 0 to 15 wt%. PBS/nanopart...
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LDPE-Nanoclay films for food packaging with improved barrier properties J. Plast. Film Sheeting (IF 3.1) Pub Date : 2023-01-12 Carolina Barros, Sónia Miranda, Olga Castro, OS Carneiro, AV Machado
This study focuses on the development of low-density polyethylene matrix nanocomposite films for food packaging industry and aims at improving low-density polyethylene oxygen barrier properties whi...
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Theoretical Analysis of Roll-over-web Coating of a Non-Newtonian Polymer Using Lubrication Approximation Theory J. Plast. Film Sheeting (IF 3.1) Pub Date : 2023-01-11 Hafiz M. Atif, Mobeen Akhtar, Muhammad A. Javed
Roll-coating process plays an important role in many industries for its practical applications such as paint, PVC coated fabrics and plastic industries. There are several roll-to-roll coating metho...
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A rheology and processing study on controlling material and process defects in polymer melt extrusion film casting using polymer blends J. Plast. Film Sheeting (IF 3.1) Pub Date : 2023-01-09 Dhammaraj Rokade, Prashant Patil, Sheetal Nandimath, Harshawardhan Pol
The primary objective of this research paper is to control the material and process defects in polymer melt extrusion film casting (EFC) process for linear chain architecture polyethylene (PE) resi...
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A maddock mixer design that mitigates gels in polyethylene resin film applications J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-10-26 Mark A Spalding, Xiaofei Sun, Stephen L Kodjie, Libo Du, Timothy W Womer, Ned Uzelac
Maddock mixers are ubiquitous in plastics processing for single-screw extruders and injection molding plasticators due to their low cost to build and their ability to provide a uniform level of dis...
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Blade coating analysis of carreau fluid model with Magnetohydrodynamics and slip effects J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-10-19 M Mughees, M Sajid, MN Sadiq, H Shahzad, N Ali
Coating is a process that improves and enhances life, quality and efficiency of the web. Common industrial adhesive application to board and paper, metal foils polymer coatings, photographic film e...
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Tetra functional epoxy/polyhedral oligomeric silsesquioxane (POSS) nanocomposites with enhanced mechanical, thermal, anticorrosion and dielectric properties J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-07-20 Dhanapal Duraibabu, Srinivasan Ananda Kumar, Muthukaruppan Alagar
Tetra functional epoxy resin namely tetraglycidyl 1,4’-bis (4-amine-phenoxy) sulphone benzene epoxy (TGBAPSB) was developed via 1,4’-bis (4-amine-phenoxy) sulphone benzene (BAPSB) and epichlorohydr...
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Coating of a viscoplastic material onto a moving porous web during forward roll coating process: A theoretical study J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-07-18 Muhammad Zahid, Imran Siddique, Rifaqat Ali
In this paper, a mathematical model of forward roll for coating a thin viscoplastic fluid onto a moving porous web is developed when the web passes through a small gap between the two rigid rolls. ...
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Rheological impact of Sutterby fluid in isothermal forward roll coating process: a theoretical study J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-07-13 Alia Hanif, Zaheer Abbas, Sabeeh Khaliq
In this paper, the incompressible and isothermal flow of Sutterby fluid is investigated during the forward roll coating process. The mass and momentum equations are non-dimensionalized and simplifi...
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From the Editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-06-16 John R. Wagner, Jr
By my count the seventh wave of this COVID-19 corona virus pandemic is winding down. Governments and regulatory agencies are rescinding mask mandates in light of public opposition and the desire to get back to normal, whatever that is. The US has rescinded the requirement that US citizens returning to the USA via air need to have a negative COVID19 test. At this writing we are around 550 million cases
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Mechanical properties of thermoformed multilayer parts containing non thermoformable materials J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-06-17 Lisa-Maria Wittmann, Dietmar Drummer
Different viscous materials were chosen to simulate the behavior of degraded materials in the thermoforming process and to demonstrate the potential of using multilayer sheets for thermoforming non...
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Analytical study of isothermal blade coating process using Rabinowitsch fluid model J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-06-15 Z Abbas, S Khaliq, F Murtaza, MY Rafiq
Blade coating process is widely applied in the industry for its practical applications in photographic films, paint industries, and magnetic storage devices. Also for manufacturing newspaper, metal...
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Optimization of ethylene acrylic acid and low density polyethylene blend in tie-layer J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-06-14 Yong Zheng, Yiqing Jiao, Haewoong Park, Fei Chen, Byoungcheon Jo
Ethylene acrylic acid copolymer (EAA) is widely used as tie-layer in multilayer film structures containing aluminum foil. EAA provides adhesion between the foil and rest of the film structure. It c...
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Effects of magnesium borate on the mechanical performance, thermal and chemical degradation of polyethylene terephthalate packaging material J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-06-06 Bilal Demirel, Esra Kılıç, Ali Yaraş, Fatih Akkurt, Fugen Daver, Derya U Gezer
This study is on polyethylene terephthalate (PET) compounded with magnesium borate (MB) (Mg2B2O5) powders between (0.2–3.2% by weight) which were synthesized via sol-gel technique at laboratory-scale. The MB/PET composites were characterized in terms of chemical, thermal degradation, and mechanical properties. Their phases and chemical structures were identified by X-ray Diffraction and Fourier Transform
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A review on microphase separation measurement techniques for polyurethanes J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-06-01 Mehdi Gholami, Vahid Haddadi-Asl, Iman Sahebi Jouibari
Polyurethanes (PUs) microstructure and characteristics is strongly affected by microphase separation that arises from the thermodynamic immiscibility between the hard and soft segments. The extent of phase separation as well as the morphology and size of the separated phase governs their mechanical, electrical, thermal, and functional properties. This review: (1) provides an insight into how phase
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Research on preparation technology of animal skin intrinsic multifunctional packaging material J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-05-28 Jiaxing Zhang, Zhongzhen Long, Hui Chen, Zhihua Shan
High-end leather packaging material safe, environmentally friendly, and has a good market prospect. It is an interesting technology to solve the intrinsic functionalization of skin collagen packaging materials. Nano-Hydroxyapatite (HA) precursors solution with a specific 1.67 calcium to phosphorus ratio (Ca/P) were infiltrated into the three-dimensional collagen network matrix (3DCM) in situ growth
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Numerical analysis of two-layered isothermal calendering of viscoplastic and Newtonian fluids with different viscosity ratios J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-05-23 Muhammad Ilyas, Muhammad Zahid, Muhammad Mushtaq
Co-extruded multi-layer plastic sheets and polymer structures formed by calendering process or by cold rolling are widely used in the packaging industry and thin-film transistor manufacturing. The different materials are extruded from separate extruders into the single sheet die which delivers a multi-layer sheet with uniform layer thickness at die exit. This multi-layer sheet is then stretched between
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Enhancement of atomic oxygen resistance for heat-sealable isomeric co-polyimide films by combining ether linkage with diphenylphosphine oxide J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-05-19 Hongjiang Ni, Xiaoke Yang, Jun Li, Daijun Zhang, Jingang Liu, Shiyong Yang, Xiangbao Chen
Heat-sealable isomeric co-polyimide (CPI) films with enhanced atomic oxygen (AO) resistance and mechanical strength were synthesized from 2,3,3′,4′-oxydiphthalic anhydride (aODPA), 4,4′-oxydianiline (ODA), and 2,5-bis [(4-aminophenoxy)phenyl]diphenylphosphine oxide (BADPO). We investigated how the molecular structure and diamine ratio affected the thermal properties, solubility, mechanical properties
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Polymer/graphene nanofoam nanocomposites: Properties and potential J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-04-28 Ayesha Kausar
Graphene is a nano-allotrope of carbon. It is a two dimensional (2D) one atom thick single layer of sp2 hybridized carbon atoms. An important form of graphene is the three dimensional (3D) graphene, also known as graphene nanofoam. This review article précises progress in the field of 3D graphene-based polymeric nanocomposites. The 3D macroscopic graphene nanostructures when used to reinforce polymer
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Industry News J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-04-08
Full circle: ZnII-complexes bearing half-salan ligands facilitate the mild and selective degradation of various commercial polyesters and polycarbonates into value-added products (green solvents and chemical building blocks). We report the first example of discrete metal-mediated poly (bisphenol A carbonate) methanolysis being appreciably active at room temperature, whilst the production of several
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Regulatory expert corner global food contact regulation updates for 1st quarter 2022 J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-03-26 Huqiu Zhang
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The effect of polycarbodiimide chain extender on thermal stability and mechanical properties of biobased poly(lactic acid)/natural rubber blown films J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-03-25 Kornchanok Akaradechakul, Peerapong Chanthot, Noppadon Kerddonfag, Cattaleeya Pattamaprom
This is the first study investigating how polycarbodiimide (PCDI) delays thermal degradation of poly(lactic acid)/natural rubber blends (PLA/NR) during the preparation of PLA/NR masterbatches (MB) and PLA/MB compounds for the film blowing process. The PCDI concentration used in this work was from 0 to 1 wt%. The torque plastograms, FTIR, and 1H-NMR spectra indicated the successful chain extending reaction
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From the editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-03-25 John R. WagnerJr
The sixth wave of this COVID-19 corona virus pandemic is winding down. Governments and regulatory agencies are rescinding mask mandates in light of public opposition and the desire to get back to normal, whatever that is. At this writing, we are at 440 million cases worldwide and rising by ∼1.5–2 million cases per day worldwide and there have been > 6 million deaths which are increasing by ∼10,000
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Statistician’s corner what’s behind aliasing in fractional-factorial designs J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-03-24 Shari Kraber
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The effect of stretching and tie layer composition on adhesion strength of multi-layered films J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-03-18 Mou Paul, Barry Morris, Jeff Weinhold, Karlheinz Hausmann
Multilayer films are widely used in flexible packaging to provide an optimum balance of performance and cost. Orientation in the semi-solid state via tenter frame, double bubble, and machine direction orientation processes enhances barrier and mechanical properties and offers a means toward light weighting packaging structures. Interlayer adhesion of coextruded films, however, substantially decreases
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Effect of nanofillers on polyurethane/polystyrene matrix nanocomposites: Characteristics and forthcoming developments J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-02-18 Ayesha Kausar
Polyurethane and polystyrene are significant thermoplastic polymers having unique physical properties. This article considers the research trials on the fabrication, remarkable features, and technical applications of the polyurethane/polystyrene nanocomposites. The carbonaceous nano particles and inorganic nanofillers used with the polyurethane/polystyrene blend or copolymer are carbon nanotube, graphene
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Effect of temperature and pressure on the interfacial morphology and bond strength of thermally laminated glycol-modified polyethylene terephthalate/styrene-co-butadiene block copolymer films and comparison with coextruded (polyethylene terephthalate/styrene-co-butadiene block copolymer/polyethylene terephthalate) and polyethylene terephthalate/styrene-co-butadiene block copolymer/polyethylene terephthalate J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-02-06 Katsunori Ishida, Shotaro Nishitsuji, Ken Miyata
This study focuses on controlling the interfacial adhesive strength between heat-sealed styrene-co-butadiene block copolymer (SBC) and glycol-modified polyethylene terephthalate (PETG) multilayer films. In comparison, the interfacial bond strength of coextruded PETG/SBC/PETG films was weaker. The lamella structures of SBC and free polybutadiene increased the interfacial adhesive strength. The coextruded
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Entanglement density, macromolecular orientation, and their effect on elastic strain recovery of polyolefin films J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-01-31 Fanny Traon, Yves Grohens, Yves-Marie Corre
For amorphous polymers, restoring forces are generated by the progressive orientation of the macromolecular chains in the stretching direction leading to a decrease in the system entropy. Orienting the chains in the future stretching direction thus reduces the entropy variation induced by the stretching and limits the entropic restoring force magnitude. Entropic restoring forces created during stretching
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Food packaging and its oxygen transfer models in active multilayer structures: A theoretical review J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-01-27 Rubia Viana Batista, Wanderson Gonçalves Wanzeller, Loong-Tak Lim, Ernesto Quast, Vânia Zanella Pinto, Vivian Machado de Menezes
Many food products are sensitive to oxygen which can promote rancidity, aerobic microorganism growth, browning, vitamin degradation, flavor loss, and other undesirable reactions. Active packaging concepts have been successfully applied to delay these deteriorative phenomena. In particular, oxygen scavengers help limit O2 ingress into packaging thus extending product shelf-life and thereby reducing
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Mathematical simulation of the calendering process for non-Newtonian polymers J. Plast. Film Sheeting (IF 3.1) Pub Date : 2022-01-27 Muhammad Asif Javed, Sarah Nasir, Nasir Ali, Sabeen Arshad
This paper mathematically studies calendering with a tangent hyperbolic model to simulate non-Newtonian polymers. The constitutive equations based on Lubrication Approximation Theory (LAT) are first non-dimensionalized and then simplified. The simplified equations describing the flow inside the calender are solved (a) analytically using the perturbation method and (b) numerically using MatLab built-in
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From the Editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-12-20 John R. Wagner, Jr
We are now in the sixth wave of this COVID-19 corona virus pandemic that continues its spread throughout the world. At this writing it passed 270 million cases and is rising by ∼600–700 K cases per day worldwide and there have been > 5.3 million deaths which are increasing by ∼8000 per day. A new threat is the omicron variant which is more transmissible and hopefully less serious. This threat plus
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Global Food Contact Regulation Updates for fourth Quarter 2021 J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-12-21 Huqiu Zhang
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Improving Your DOE - Analysis with Response Transformations J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-12-21 Shari Kraber
The typical data analysis from a designed experiment (DOE) uses analysis of variance (ANOVA). Characteristics of a good model include having statistically significant model terms (and doing model reduction to remove insignificant terms), along with good lack of fit statistics and ideally, higher adjusted R-squared and predicted R-squared values. Beyond this, it is important that the underlying statistical
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From the Editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-11-28 John R. Wagner, Jr.
The COVID-19 corona virus pandemic continues its spread throughout the world. At this writing it passed 220 million cases and is rising by ∼500,000 cases per day worldwide and there have been >4.5 million deaths which are increasing by ∼10,000 per day. The third wave covered about 3 months and may have had 3 mini waves inside. The fourth wave peak, which was in April 2021, 7-day moving average was
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A review of current knowledge and future trends in polymer/boehmite nanocomposites J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-09-02 Ayesha Kausar
Boehmite [bey-mahyt] is a unique aluminum oxide hydroxide nanostructure. It consists of nanosheets of octahedral aluminum ions with surface hydroxyl groups. Owing to exceptional reinforcing behavior, boehmite nanoparticles have gained immense attention as polymeric nanofillers. Essential matrices used with the boehmite based nanocomposites include poly(methyl methacrylate), polyethylene, polypropylene
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An exact solution for blade coating of a second-grade fluid on a porous substrate J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-08-03 M Mughees, M Sajid, H Shahzad, MN Sadiq, N Ali
This study explores the blade coating process with a simple fixed blade for a second-grade fluid over a moving porous substrate. The article investigates both plane and exponential blade coating. The analysis simplifies the governing equations via lubrication approximation theory by assuming that blade length is much larger than the coating layer thickness. Suitable scales normalize the governing equations
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Multilayer sheets for thermoforming non thermoformable polymers J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-08-03 Lisa-Maria Wittmann, Dietmar Drummer
Multilayer sheets were used for thermoforming non thermoformable polymers in order to face the challenge of semi-crystalline polymers like low melt-stiffness. Mono- and 2-layer sheets consisting of different polypropylene (PP) homopolymers were extruded on a twin screw extruder. The PP viscosity as was measured by melt flow rate (MFR) 3 g/10 min., 12 g/10 min., 22 g/10 min. and 50 g/10 min. The layer
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Experimental and numerical investigations on a high-density polyethylene (HDPE) blown film cooling with a new design of the counter-flow/radial jet air-ring J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-07-05 ME Ismail, MM Awad, AM Hamed, MY Abdelaal, EB Zeidan
This study experimentally and numerically investigates a typical HDPE blown film production process cooled via a single-lip air-ring. The processing observations are considered for the proposed subsequent modifications on the air-ring design and the location relative to the die to generate a radial jet, directly impinging on the bubble. Measurements are performed to collect the actual operating parameters
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Influence of magnetohydrodynamics and heat transfer on the reverse roll coating of a Jeffrey fluid: A theoretical study J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-07-04 Fateh Ali, Yanren Hou, Muhammad Zahid, MA Rana, Muhammad Usman
The purpose of this article is to provide a mathematical model of magnetohydrodynamic (MHD) non-isothermal flow of an incompressible Jeffrey fluid as it goes through a minimal gap between the two counter rotating rolls. The dimensionless forms of governing equations are obtained by using appropriate dimensionless parameters. The LAT (lubrication approximation theory) is utilized to simplify the dimensionless
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Advances in polystyrene/graphene nanoplatelet nanocomposites J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-30 Ayesha Kausar
This article analyses research trials on noteworthy features and technological impact of the polystyrene/graphene nanoplatelet nanocomposites. In polystyrene matrix, graphene nanoplatelets have been used as remarkable nanofiller. Substantial improvements in polystyrene physical properties occurs by adding low nanofiller content. Simple in situ, emulsion, solution, or melt synthesis strategies have
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From the Editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-29 John R. Wagner, Jr.
The COVID-19 corona virus pandemic continues its spread throughout the world. At this writing it passed 175 million cases and is rising by ∼400,000 cases per day worldwide and there have been >3.7 million deaths which are increasing by ∼10,000 per day. The third wave covered about 3 months and may have had 3 mini waves inside. The fourth wave peak, which was in April 2021, 7-day moving average was
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Analysis of flow and heat transfer over stretching/shrinking and porous surfaces J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-21 Azhar Ali, Dil Nawaz Khan Marwat, Aamir Ali
Flows and heat transfer over stretching/shrinking and porous surfaces are studied in this paper. Unusual and generalized similarity transformations are used for simplifying governing equations. Current model includes all previous cases of stretched/shrunk flows with thermal effects discussed so far. Moreover, we present three different cases of thermal behavior (i) prescribed surface temperature (ii)
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Characterisation of the opening behavior of multilayer films with cohesive failure mechanism by in situ peel tests in the ESEM J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-18 M Heuser, A Zankel, C Mayrhofer, K Reincke, B Langer, W Grellmann
In this work, peel tests inside the chamber of an ESEM (in situ peel tests) are described with heat-sealed test specimens of packaging systems made of multilayer films that simulate different flexible packaging types, according to the packaging line used. The in situ peel tests provided evidence to describe the influence of three different main aspects of the packaging process in relation to the opening
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Numerical study of non-isothermal analysis of exiting sheet thickness in the calendering of micropolar-Casson fluid J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-13 Zaheer Abbas, Sabeeh Khaliq
This theoretical analysis reports on the non-isothermal calendering process of micropolar-Casson fluid and studies the viscoplastic and microrotation effects by utilizing the lubrication approximation (LAT). Exact dimensionless velocity and pressure gradient solutions are achieved. Then a numerical integration technique determined other mechanical quantities. Implementing the finite difference approximations
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Antimicrobial activity and physicochemical characterization of thermoplastic films based on bitter cassava starch, nanocellulose and rosemary essential oil J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-09 Josette Araya, Marianelly Esquivel, Guillermo Jimenez, Diana Navia, Luis Poveda
Extended shelf-life of many foods is a modern requirement that has been achieved by means of fossil-based plastic films despite their environmental issues. Recently, starch-based, fully biodegradable thermoplastics are gaining momentum as packaging material; however, if they are in contact with food, aspects such storage, water interaction and spoilage due to microorganisms must be considered. Essential
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Extraction and application of cellulose microfibers from Washingtonia palm as a reinforcement of starch film J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-06-04 Laila Sajid, Oussama Azmami, Zakia EL Ahmadi, Abbès Benayada, Aicha Boukhriss, Sanaa Majid, Said Gmouh
This work aims to optimize the industrial extraction conditions of cellulose microfibers (CMFs) from Washingtonia palm fiber for application in starch bio-composite films. The CMF extraction was a mixed process that combines caustic soda treatment with hydrogen peroxide bleaching in a stirred thermostatic bath. To study the yield, whiteness index and α-cellulose content, three variables were selected;
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Polymer dots and derived hybrid nanomaterials: A review J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-04-13 Ayesha Kausar
Quantum dots are tiny (∼5 nm) nanoparticles with outstanding electronic, optical, luminescence, and semiconducting properties. Polymer dots are important and unique quantum dots. Polymer dots have been designed and used for advanced hybrid nanomaterials and applications. This review article deliberates scientific trials on design, fabrication, characteristics, and technical solicitations of polymer
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From the Editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-04-07 John R. Wagner, Jr.
The COVID-19 corona virus pandemic continues its spread throughout the world. It is now approaching 120 million cases and rising by ∼400,000 cases per day worldwide and >2.6 million deaths increasing by ∼10,000 per day. The third wave covered about 3 months and may have had 3 mini waves inside. The peak, which was in December 2020, averaged ∼650,000 cases per day. At this writing we may be seeing the
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Evolving scientific aptitude of poly(ethylene glycol) filled with carbonaceous nanofillers J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-02-27 Ayesha Kausar
There is rising interest in the development of poly(ethylene glycol) based nanocomposites. Poly(ethylene glycol) is a synthetic water soluble polyether polymerized from ethylene glycol monomer. Poly(ethylene glycol) matrix has been reinforced with various carbonaceous nanofillers such as graphene, graphene oxide, carbon nanotube, and nanodiamonds to form nanocomposites. In this state-of-the-art review
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Oriented and annealed poly(lactic acid) films and their performance in flexible printed and hybrid electronics J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-02-01 Enni Luoma, Marja Välimäki, Teijo Rokkonen, Hannu Sääskilahti, Jyrki Ollila, Jari Rekilä, Kirsi Immonen
Flexible and hybrid electronics (FHE) are widely utilized from wearable to automotive applications. Instead of commonly used poly(ethylene terephthalate) (PET) film, bio-based and biodegradable polymer, poly(lactic acid) (PLA), is a most promising novel substrate alternative for FHE. From the point of heat curable conductive inks, the poor heat resistance and inherent brittleness are the major drawbacks
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From the Editor J. Plast. Film Sheeting (IF 3.1) Pub Date : 2021-01-25 John R. Wagner, Jr.
As I write this the COVID-19 corona virus pandemic continues it spread throughout the world. It is now approaching 88 million cases and rising by ∼500,000 cases per day worldwide and >1.8 million deaths increasing by ∼10,000 per day. Since my last editorial, the cases have again tripled, and the deaths doubled. And when you read this the numbers will be out of date. There is some indication that we