فهرست مطالب alireza sukhtesaraie

Flexographic printing is the most usable technology in the packaging industry. But the lack of proper adhesion of water-based ink on cardboard coated with polyethylene is one of the most important problems. Silane adhesion promoters are considered among the best compounds used as the crosslinking and waterproofing agents in coating and ink industries. In this study, N-(2-Aminoethyl) (3-aminopropyl) methyldimethoxysilane and 2-(3, 4-Epoxycyclohexyl) ethyltriethoxysilane were used to improve the adhesion of water-based ink on paper boarded-coated with polyethylene. Results showed that highest amount of adhesion were achieved by adding 5% of N-(2-Aminoethyl) (3-aminopropyl) methyldimethoxysilane to ink. Adding silane compounds to ink formulation increased the contact angle of the ink film on the surface of cardboard coated with polyethylene which means that inks containing silane compounds act more successful in the formation of hydrophobic surface. It is worth noting that surface tension was decreased by addition of silane components to the formulation of the ink.

Nitrocellulose is one of the most important ink binders in flexographic printing, but one of the major problems is lack of proper adhesion of nitrocellulose-based ink to polyethylene film. Adhesion promoters are considered as best ingredients that are used in ink and coatings industries as cross-linking and waterproofing agents. In this study, gamma-Aminopropyltriethoxysilane adhesion promoter was used to improve the adhesion of Nitrocellulose the polyethylene film. The results indicated that adhesion was improved by adding gamma-Aminopropyltriethoxysilane in the formulation of ink. The best adhesion was achieved for ink containing 5% gamma-Aminopropyltriethoxysilane. According to the results from the contact angle test, polyethylene film containing gamma-Aminopropyltriethoxysilane compared to films without Silane compound formed more hydrophobic film. It is worth noting that the addition of Silane adhesion promoter to ink formulation causes to reduce the surface tension of ink.

In this study , the physical and mechanical properties of polypropylene composites reinforced with bagasse alkaline-Sulfite-Anthraquinone, Soda-Anthraqouinone, Monoethanolamine-Anthraquinone chemical pulps and mechanical pulp (CMP) known as Pulp-Plastic Compostes (PPC) were investigated and the results were compared among PPCs and with polypropylene composites reinforced with bagasse flour known as Wood-Plastic Composite (WPC) . The ratio of the matrix (polypropylene) to reinforcement agent (pulp) was 50/50. The results showed that elastic modulus, tensile strength, bending strength and impact strengths of the produced composites were influenced by the pulping processes significantly. Furthermore, the composites which contained chemical pulps had higher strength and dimensional stability as well as less water absorption than that of containing mechanical pulp. In comparison to WPCs , the water absorption and dimensional stability of PPCs decreased and increased, respectively. Generally, the results showed very superior physical and mechanical properties in pulp - plastic composites than flour bagasse- plastic composites.

Flexographic printing is introduced as the most widely technology in packaging, but the quality of flexographic products is less than offset printing. One of the most important issues that threaten the quality of flexographic printing is weak adhesion of flexography ink to the substrate, especially polyolefin substrate. Organic silanes are environmentally friendly compounds that among properties of organic silanes can note to adhesion promotion, increasing resistance to water, Preventability that they are used to improve foor safety in the packaging, ink, paint, food and beverages industries. In addition to adhesion promotion, organic silanes can control and decrease of growth and adhesion of microorganism. Among of surfaces that treating by organic silanes can note to metals, plastics, glass, ceramics, rubber, polyester, polyurethane, polyacrylic, phenolic and melamine resins and polycarbonate. Optimization of formulation due to the high price of organic silanes is so matter. This paper review chemistry, features and applications of organic silanes in different industries. The purpose of this study is identification and distribution the opportunities and take advantage of organic silane to enhance adhesion in film packaging and decrease microbial adhesion.

Fluting paper is one of the most important paper grades in packaging industries. Demand of paper products has increased dramatically in recent years because of population growth and increasing development of different industries. In the past decades, Considerable volume of annual consumption of packaging paper from other countries were provided, So in this regard to provide part of the country's need, many factories were contemplated in order to compensate a part of paperboard needs by fluting paper and newspaper production. But apparently, this is not the rate of production needs. Therefore, in this research, in addition to evaluating the feasibility of increasing production capacity of Fluting paper by paper machine number one and Qualitative properties of the resulting paper Fluting paper in comparison to paper machine number two, Physical characteristics and mechanical pulp (hand sheet paper) and paper after paper machine were measured. The results show that the mechanical properties of paper from paper machine 1 particularly in the Tensile index, Tear index, Burst index, Folding, Stiffness, RCT, CCT, CMT are superior to that of paper from paper machine 2. The Results also show that there are significant differences between the paper properties of two lines in 95 percent level except tear index.

In this study، the potential use of nano-coatings for food packaging industry has been investigated. Therefore، this study has been presented in three sections: the application of nanocoatings in the food industry، natural، edible and biodegradable nano coatings. The use of nanoscale or multiatomic coatings have presented specific features in the packing industry. Coatings which have shown their role in protection and beautification of surfaces will demonstrate their particular ability by nanotechnology''s aid today an especially in the future. Using nanoscale coatings، such as nano-materials with antibacterial properties without chemical germicides، chemical، alkali and heat resistant materials with good flexibility، abrasion and corrosion resistant lacquers with suitable flexibility and natural and edible coatings which will be changed according to the case and type of nanocoatings can offer beneficial capabilities in the food packaging industry. Generally speaking، the use of nanocoatings in packaging industry will result in increments in quantitative and qualitative properties of the food products and extend their shelf life.

By developing technology, "the environmental contaminants" is counted as an inevitable subject. The most important result of controlling and removing the industrial pollutants is stepping towards sustainable development. Printing and packaging industries are problematic due to the presence of polymers, adhesives, alcohols, ink and detergents. These materials can make the wide range of industrial pollutions. Actions such as application of recyclable metalized paper, condensing liquid wastes, using open-stay ink and etc. have been taken to reduce industrial pollutants. This research discussed different ways to reduce and control printing and packaging contaminants.