Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
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R. Boutrouka
Abstract
Seal strength at high and low temperatures as well as the width of the heat sealing temperature range are important properties in packaging industry. In addition, for sterilisable and retort applications, having those properties at elevated temperatures is crucial. Polypropylenes (PP) are usually used for these applications, however, the sealing temperatures are too high and the temperature range for the seal process is narrow, thus blending with a PP elastomer copolymer can be an alternative. In this study, hot-tack and heat seal properties were determined for a homo-polypropylene, a random co-polypropylene and an elastomer co-polypropylene based films and their blends. It is found that the seal initiation temperature (for hot tack and heat seal) is governed by the melting temperature and crystallinity and the increase of the elastomer content in the blends leads to a decrease of the seal initiation temperature. It is also shown that the sealing force depends on the ease of chains diffusion across the sealing interface. Finally, it was found that the strength of the heat sealing increases by recrystallization in the sealing interface after cooling.
References
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© 2018, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Special Issue Contributions
- Preparation of Poly(l-lactic acid) Scaffolds by Thermally Induced Phase Separation: Role of Thermal History
- Modification of Syndiotactic Polypropylene with Nano-Calcium Carbonate and Halloysite
- Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
- Flow-Induced Crystallization of Polyamide-6
- PLA Crystallization Kinetics and Morphology Development
- Morphology in Multilayer Blown Films of Polypropylene and Ethylene-Octene Copolymer Blends
- A Criterion for the Formation of Fibrillar Layers in Injection Molded Parts
- Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
- The Effect of Cellulose Nanocrystals (CNC) on Isothermal Crystallization Kinetics of LLDPE and HDPE
- A Rheological Investigation of the Crystallization Kinetics of Syndiotactic Polypropylene of Varying Degree of Tacticity
- Effect of Mutual Interaction between High and Low Stereo-Regularity Components on Structure Formation in Melt Spinning Process of Isotactic Polypropylene Blend Fibers
- Analysis of the No-Flow Criterion Based on Accurate Crystallization Data for the Simulation of Injection Molding of Semi-Crystalline Thermoplastics
- Interfacial Tension Properties in Biopolymer Blends: From Deformed Drop Retraction Method (DDRM) to Shear and Elongation Rheology-Application to Blown Film Extrusion
- Stress Optical Behavior and Structure Development in Melt Spun PEEK/PEI Blends
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Special Issue Contributions
- Preparation of Poly(l-lactic acid) Scaffolds by Thermally Induced Phase Separation: Role of Thermal History
- Modification of Syndiotactic Polypropylene with Nano-Calcium Carbonate and Halloysite
- Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
- Flow-Induced Crystallization of Polyamide-6
- PLA Crystallization Kinetics and Morphology Development
- Morphology in Multilayer Blown Films of Polypropylene and Ethylene-Octene Copolymer Blends
- A Criterion for the Formation of Fibrillar Layers in Injection Molded Parts
- Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
- The Effect of Cellulose Nanocrystals (CNC) on Isothermal Crystallization Kinetics of LLDPE and HDPE
- A Rheological Investigation of the Crystallization Kinetics of Syndiotactic Polypropylene of Varying Degree of Tacticity
- Effect of Mutual Interaction between High and Low Stereo-Regularity Components on Structure Formation in Melt Spinning Process of Isotactic Polypropylene Blend Fibers
- Analysis of the No-Flow Criterion Based on Accurate Crystallization Data for the Simulation of Injection Molding of Semi-Crystalline Thermoplastics
- Interfacial Tension Properties in Biopolymer Blends: From Deformed Drop Retraction Method (DDRM) to Shear and Elongation Rheology-Application to Blown Film Extrusion
- Stress Optical Behavior and Structure Development in Melt Spun PEEK/PEI Blends
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
