scholarly journals Biodegradable Polymers for the Production of Nets for Agricultural Product Packaging

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 323
Author(s):  
Francesco Paolo La Mantia ◽  
Manuela Ceraulo ◽  
Paolo Testa ◽  
Marco Morreale
Keyword(s):  
Biodegradable Polymer ◽  
Food Packaging ◽  
Cold Drawing ◽  
Laboratory Simulation ◽  
Agricultural Product ◽  
Product Packaging ◽  
Polymer Systems ◽  
Good Potential ◽  
Packaging Industry ◽  
Points Of View

It is well known that the need for more environmentally friendly materials concerns, among other fields, the food packaging industry. This regards also, for instance, nets used for agricultural product (e.g., citrus fruits, potatoes) packaging. These nets are typically manufactured by film blowing technique, with subsequent slicing of the films and cold drawing of the obtained strips, made from traditional, non-biodegradable polymer systems. In this work, two biodegradable polymer systems were characterized from rheological, processability, and mechanical points of view, in order to evaluate their suitability to replace polyethylene-based polymer systems typically used for agricultural product net manufacturing. Furthermore, laboratory simulation of the above-mentioned processing operation paths was performed. The results indicated a good potential for biodegradable polymer systems to replace polyethylene-based systems for agricultural product packaging.

scholarly journals Effect of Cold Drawing on Mechanical Properties of Biodegradable Fibers

2017 ◽  
Vol 15 (1) ◽  
pp. 70-76 ◽  
Author(s):  
Francesco Paolo La Mantia ◽  
Manuela Ceraulo ◽  
Maria Chiara Mistretta ◽  
Marco Morreale
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Biodegradable Polymers ◽  
Biodegradable Polymer ◽  
Cold Drawing ◽  
Thermal Characterization ◽  
Systematic Investigation ◽  
Thermomechanical Properties ◽  
Polymer Systems ◽  
The Impact

Purpose Biodegradable polymers are currently gaining importance in several fields, because they allow mitigation of the impact on the environment related to disposal of traditional, nonbiodegradable polymers, as well as reducing the utilization of oil-based sources (when they also come from renewable resources). Fibers made of biodegradable polymers are of particular interest, though, it is not easy to obtain polymer fibers with suitable mechanical properties and to tailor these to the specific application. The main ways to tailor the mechanical properties of a given biodegradable polymer fiber are based on crystallinity and orientation control. However, crystallinity can only marginally be modified during processing, while orientation can be controlled, either during hot drawing or cold stretching. In this paper, a systematic investigation of the influence of cold stretching on the mechanical and thermomechanical properties of fibers prepared from different biodegradable polymer systems was carried out. Methods Rheological and thermal characterization helped in interpreting the orientation mechanisms, also on the basis of the molecular structure of the polymer systems. Results and conclusions It was found that cold drawing strongly improved the elastic modulus, tensile strength and thermomechanical resistance of the fibers, in comparison with hot-spun fibers. The elastic modulus showed higher increment rates in the biodegradable systems upon increasing the draw ratio.

Green Ecological Design Research of Tourism Product Packaging

2014 ◽  
Vol 670-671 ◽  
pp. 960-963
Author(s):  
Fen Fen Zhou ◽  
Jian Jun Liao ◽  
Jiao Teng
Keyword(s):  
Sustainable Development ◽  
Food Packaging ◽  
Economic Benefits ◽  
Tourism Industry ◽  
Living Standard ◽  
Ecological Design ◽  
Product Packaging ◽  
Tourism Product ◽  
Packaging Industry ◽  
Packing Layer

With the continuous improvement of people's living standard,the demand of tourists about tourism product is growing.Tourism product packaging has a distinct regional and ethnic characteristics.In the packaging form, It is an important means of promoting the value of tourism products.[1]However,Touris m packaging industry not only to bring economic benefits to society at the same time, also bring the ecological environment and resource potential crisis.In the 1980s,human sustainable development strategy are put forward.The new concept of development is put forward with the changes of The Times, the demand of social economic development.The tourism products of green ecological packaging design began to be widely concerned.The sustainable development of green ecological design is an important subject of tourism industry, packaging industry in China.In the process of the research of the tourism product packaging,We should strictly carry out the general principles of the limit excessive packaging of clear rules.Four kinds of goods packaging,such as drink wine、cakes、tea and cosmetics.The packing layer is less than three layers.Food packing layer is no more than two layers.Beverage, wine, cake packing space is not more than 55% of goods volume,cosmetics do not exceed 50%,tea does not exceed 25%, food does not exceed 25%;Other food packaging gap should be no greater than 45%,packing layer should be not more than three layers.

Using watermark visibility measurements to select an optimized pair of spot colors for use in a binary watermark

2020 ◽  
Vol 2020 (15) ◽  
pp. 197-1-197-7
Author(s):  
Alastair Reed ◽  
Vlado Kitanovski ◽  
Kristyn Falkenstern ◽  
Marius Pedersen
Keyword(s):  
Food Packaging ◽  
Red Light ◽  
Human Observer ◽  
Viewing Distance ◽  
Point Of Sale ◽  
Complementary Color ◽  
Low Visibility ◽  
Packaging Industry ◽  
Spot Color ◽  
Selection Of

Spot colors are widely used in the food packaging industry. We wish to add a watermark signal within a spot color that is readable by a Point Of Sale (POS) barcode scanner which typically has red illumination. Some spot colors such as blue, black and green reflect very little red light and are difficult to modulate with a watermark at low visibility to a human observer. The visibility measurements that have been made with the Digimarc watermark enables the selection of a complementary color to the base color which can be detected by a POS barcode scanner but is imperceptible at normal viewing distance.

scholarly journals Paperboard Coating Detection Based on Full-Stokes Imaging Polarimetry

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 208
Author(s):  
Javier Brugés Martelo ◽  
Jan Lundgren ◽  
Mattias Andersson
Keyword(s):  
Food Packaging ◽  
Imaging Systems ◽  
Gaussian Kernel ◽  
Support Vector ◽  
Camera System ◽  
Distance Correlation ◽  
Imaging Polarimetry ◽  
Packaging Industry ◽  
Thickness Variations

The manufacturing of high-quality extruded low-density polyethylene (PE) paperboard intended for the food packaging industry relies on manual, intrusive, and destructive off-line inspection by the process operators to assess the overall quality and functionality of the product. Defects such as cracks, pinholes, and local thickness variations in the coating can occur at any location in the reel, affecting the sealable property of the product. To detect these defects locally, imaging systems must discriminate between the substrate and the coating. We propose an active full-Stokes imaging polarimetry for the classification of the PE-coated paperboard and its substrate (before applying the PE coating) from industrially manufactured samples. The optical system is based on vertically polarized illumination and a novel full-Stokes imaging polarimetry camera system. From the various parameters obtained by polarimetry measurements, we propose implementing feature selection based on the distance correlation statistical method and, subsequently, the implementation of a support vector machine algorithm that uses a nonlinear Gaussian kernel function. Our implementation achieves 99.74% classification accuracy. An imaging polarimetry system with high spatial resolution and pixel-wise metrological characteristics to provide polarization information, capable of material classification, can be used for in-process control of manufacturing coated paperboard.

scholarly journals International Equity Portfolios and Currency Hedging: The Viewpoint of German and Hungarian Investors

2002 ◽  
Vol 32 (1) ◽  
pp. 171-197 ◽  
Author(s):  
Gyöngyi Bugár ◽  
Raimond Maurer
Keyword(s):  
Capital Market ◽  
Stock Exchange ◽  
Emerging Market ◽  
Currency Hedging ◽  
Portfolio Strategies ◽  
Different Types ◽  
International Equity ◽  
Good Potential ◽  
Points Of View ◽  
Equity Portfolios

AbstractIn this paper we study the benefits derived from international diversification of equity portfolios from the German and the Hungarian points of view. In contrast to the German capital market, which is one of the largest in the world, the Hungarian Stock Exchange is an emerging market. The Hungarian stock market is highly volatile, high returns are often accompanied by extremely large risk. Therefore, there is a good potential for Hungarian investors to realise substantial benefits in terms of risk reduction by creating multi-currency portfolios. The paper gives evidence on the above mentioned benefits for both countries by examining the performance of several ex ante portfolio strategies. In order to control the currency risk, different types of hedging approaches are implemented.

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