Multilayer Polymer Films

Aswathi, M. K.; Maria, Hanna J.; Izdebska, Joanna; Thomas, Sabu

doi:10.1007/978-94-017-7324-9_8

Cited by 12 publications

(12 citation statements)

References 22 publications

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“…Various techniques have been used to integrate different polymeric and nonpolymeric materials to form multilayer packaging structures. The most common multilayer film preparation techniques include coextrusion, coinjection with stretch blow molding, lamination, and coating (Ajitha, Aswathi, Maria, Izdebska, & Thomas, 2016). Appropriate selection of preparation techniques and precise control over process variables are key aspects of manufacturing multilayer packages and are essential for achieving the full capability and functionality of individual layers to serve specific purposes.…”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

“…The coextrusion technique is the most predominant approach used in the production of multilayer packaging structures. A typical coextrusion process involves two or more polymeric materials usually in the form of granules or pellets being subjected to heat treatment and being molten separately (Ajitha et al., 2016). The polymeric melt streams are then combined together and extruded as a single unit with multiple layers (Messin et al., 2017) (Figure 2).…”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

“…Two webs are bonded together as the extruded polymeric material in the center solidifies. Then, after trimming the edges, the finished laminate is wound (Ajitha et al., 2016). The effectiveness of bonding between the extrudate and the webs depends on the chemical compatibility between the extrudate and the webs, which can be improved by methods such as corona discharge, use of copolymer and chemical primer coating, line speed because adhesion needs certain level of surface polymer oxidation to provide good bond strength, temperature of the polymeric extrudate as it affects the degree of oxidation, and thickness of the extrudate because thicker extrudate can carry more heat that can, in turn, provide better bonding (Morris, 2016).…”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

“…In solvent‐less lamination, the adhesive employed is 100% solid and it does not undergo any drying treatment but requires mild heating to reduce the viscosity of the adhesive in order to facilitate bonding. The solvent‐less system is comparatively efficient, economical, and ecofriendly as there is no solvent emission (Ajitha et al., 2016).…”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

“…Solvent‐based coating is similar to adhesive lamination; the solvent is coated onto the web material and sent into the oven thereby increasing the temperature of the web for drying of the solvent. In case of aqueous dispersions, hot air, infrared, or ultrasonic heating techniques are commonly employed (Ajitha et al., 2016).…”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

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Multilayer packaging: Advances in preparation techniques and emerging food applications

Anukiruthika

Sethupathy

Wilson

et al. 2020

Comp Rev Food Sci Food Safe

183

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In recent years, with advantages of versatility, functionality, and convenience, multilayer food packaging has gained significant interest. As a single entity, multilayer packaging combines the benefits of each monolayer in terms of enhanced barrier properties, mechanical integrity, and functional properties. Of late, apart from conventional approaches such as coextrusion and lamination, concepts of nanotechnology have been used in the preparation of composite multilayer films with improved physical, chemical, and functional characteristics. Further, emerging techniques such as ultraviolet and cold plasma treatments have been used in manufacturing films with enhanced performance through surface modifications. This work provides an up-to-date review on advancements in the preparation of multilayer films for food packaging applications. This includes critical considerations in design, risk of interaction between the package and the food, mathematical modeling and simulation, potential for scale-up, and costs involved. The impact of in-package processing is also explained considering cases of nonthermal processing and advanced thermal processing. Importantly, challenges associated with degradability and recycling multilayer packages and associated implications on sustainability have been discussed. K E Y W O R D Sbiodegradability, improved film characteristics, multilayer packaging, nanotechnology, sustainability, recycling

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Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

See 3 more Smart Citations

Multilayer packaging: Advances in preparation techniques and emerging food applications

Anukiruthika

Sethupathy

Wilson

et al. 2020

Comp Rev Food Sci Food Safe

183

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Polymer Adhesion

Kumar,

Patil,

Dhinojwala

2023

Encyclopedia of Polymer Science and Technology

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Polymer adhesives play an important role in industries in the areas of multilayer packaging, structural bonding, wearables, and medical adhesives. The adhesive strength involves two main components. The first component is a function of thermodynamic surface or interfacial energies, and the second component is related to bulk dissipation. The bulk dissipation term can contribute to an almost thousand‐time enhancement in adhesion strength compared to the thermodynamic work of adhesion. In this article, we discuss the basic formulations to calculate the surface and interfacial energies of solids and relate these parameters to the thermodynamic work of adhesion. We also discuss the mechanisms that contribute to the velocity‐dependent adhesive strength. Since almost all practical surfaces are rough, we present the recent theoretical and experimental data on how roughness affects adhesion. The experimental techniques to measure surface structure, thermodynamic work of adhesion, and fracture strength of adhesives are also described in this article. The recent literature on natural adhesive systems has attracted significant interest and provides a brief discussion on how natural systems can be an important source of inspiration for new chemistry and structure to optimize adhesion for various environmental conditions. We end this article with a section summarizing the industrial applications of polymer adhesion.

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Integrating Electrohydrodynamic Processes with Food 3D Printing

2022

3D Printing of Foods

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Multilayer Polymer Films

Cited by 12 publications

References 22 publications

Multilayer packaging: Advances in preparation techniques and emerging food applications

Multilayer packaging: Advances in preparation techniques and emerging food applications

Polymer Adhesion

Integrating Electrohydrodynamic Processes with Food 3D Printing

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