فصلنامه علوم و فنون بسته بندی
پیاپی 18 (تابستان 1393)

In this study, the feasibility study for making fire resistant from populus nigra was performed. Test sample of size making fire resistance properties according to ISO 11925 standard has been made. In this paper, the saturation of the two-way immersion productivity and Bethel is used. In the case of feature sizes samples are tested fire resistance properties of various materials, samples saturated with ammonium Bromide Bethel method, the best results were provided. Treatments in the wood caused the initial uptake being higher than the control samples in populus nigra, so that the wood was treated with the highest initial uptake. The secondary absorption can also be stated that treatment, the index has increased. As was indicated, treated wood after burning weight loss was significantly lower in non finds.

Nowadays use of edible films and coatings is increasing due to their biodegradability properties. Fish gelatin obtained from fish skin wastage can be used as an appropriate protein compound for preparation of edible films and replacing pork gelatin. In this study, films were prepared from a combination of fish gelatin and three phenolic compounds (Caffeic acid, tannic acid and ferulic acid) at concentrations of (0%, 1%, 3% and 5%) at pH>10 and temperature of 60˚c under continuous injection of O2 and addition of the plasticizer sorbitol /glycerol. Oxygen permeability, water vapour permeability and colorimetric indices were studied. Oxygen permeability and water vapour permeability were decreased in the cold water fish gelatin film content of ferulic acid and ribose sugar, and the highest effect was observed at concentration of 5%. Increasing concentration of ferulic acid in presence of ribose sugar led to increased indices –a (tend to green color) and +b (tend to yellow color). Thus, rebose sugar and ferulic acid can increase security of biodegradable packaging by improving barrier and physico-chemical properties.

Protein based films used for food packaging despite having numerous benefits like biodegradability and renewability suffer from essential drawbacks of weak mechanical and water vapour barrier properties. In recent years efforts for improving functional properties of such films from various resources, through modifying formulation, molecular crosslinking and promote proteins based composite films have been increased. In this paper some early researches on improving functional properties of protein films obtained from different resources via preparing composite protein films have been reviewed.

Improvement of the physical and mechanical properties of paper in the discussion of the application is very important. In order to fulfill this purpose, conventional processing techniques such as filtering and addition of long fibers and other chemicals such as additive resistors for dry and wet the pulp have been used. One of the methods to improve the physical and mechanical properties of paper, is nano-cellulose to produce nano fibrillated cellulose (NFC) with relatively large diameter and effective surface OH groups available in abundance as a result in reinforcing Paper. On the other hand, in various industries like packaging industry and health products, anti-bacterial properties help to prevent the development of bacteria and as a result community health would be improved. In order to improve the antibacterial properties of paper, nano-materials such as nanosilver, nano titanium dioxide, zinc and other materials can be used. Silver oxide nanoparticles (NP) as antimicrobial agents has been of great interest, which has a higher shelf life than organic antimicrobial agents. Increased awareness of infectious diseases caused by various microorganisms to develop resistance to antibiotics, which makes the search for new materials and efficient anti bacteria is essential.

Package design is an important factor in product manufacturing that must be performed based on customer requirements. This paper Introduces cardboard approach using raw materials according to standards and also effective requirements so, using materials based on specific standards will play important role. The materials and its production process used for packaging manufacturers to supply products with good quality tips to board based on its weight should typically greater than 150 g/m2 while choosing and packing various items.meanwhile, there are some exceptions,such as the middle layer of cardboard crowns and a congress that can have a light weight less than 100g/m2. A there are some exceptions, such as the middle layer of cardboard crowns and a congress that can have a light weight less than 100g/m2. Asimple board (liner board)board is usually fairly light weight as the outer layer of cardboard congress and as close packing is consumed.