Contents Introduction Metal Tin tinplate Beskalajni steel Aluminium Aluminium foil laminates and me

Contents Introduction Metal Tin tinplate Beskalajni steel Aluminium Aluminium foil laminates and metallized films Plastic butchers paper materials Polyolefins polyvinylidene chloride (PVDC) butchers paper Polystyrene Polyesters Polyamide Polyvinyl chloride Biopolymers Paper and paperboard Paper Cardboard Glass Legal provisions butchers paper Health Integrity Physical butchers paper and mechanical properties Ecological aspects Conclusion References. Author: butchers paper Zdravko Šumić Mentor: prof. Dr. Vera Lazic. Introduction
Design and construction of packaging butchers paper play an important role in determining the viability or shelf life of the food product (food). The right choice of materials and technology packages maintain product quality and fresh during butchers paper storage and distribution.
The materials traditionally used for food packaging include: glass, metals (aluminum, foils and laminates, tinplate and beskalajni steel), paper and cardboard and plastics. In addition, several different types of plastics are used in rigid and elastic (flexible) form. Today food packaging is often made up of several materials to take advantage of the functional and aesthetic advantages butchers paper of each material.
Metal provides a good combination, excellent physical protection and barrier properties, the ability to design and decorative potential, butchers paper the recyclability and acceptability butchers paper by consumers. The two most dominant metal used for packaging are aluminum and steel. Tin tinplate
Tin tin-coated steel is produced from low carbon steel (black plate). Tinplate is a result of coating both sides of the black sheet with a thin layer of tin. Coating is accomplished by dipping sheet steel in molten tin (hot submerged tinplate) or electro deposition of tin on the list of steel (electrostatic tinplate). butchers paper Although butchers paper tin provides certain steel corrosion resistance of tinplate containers are often painted to provide an inert barrier between the metal and the food. In addition to its excellent barrier properties butchers paper to gases, water vapor, light and smells, tinplate withstand high thermal treatments and can be hermetically closed making it suitable for sterile supplies. White sheet can be used for the production of containers of different shapes. In this way the white sheet is widely used in the formation of cans, the treated food and aerosol container for powdered foods, butchers paper sugar or sweets made from flour. Tinplate is an excellent substrate for coating of metals butchers paper because it allows excellent butchers paper graphic decoration. Its relatively light weight and high mechanical strength makes it simple to transport and storage. Tinplate is easy to recycle, and it repeatedly without loss of quality and is significantly less expensive than aluminum.
Tin is a very expensive metal and its production is limited, therefore it is today practically all production of tinplate based on the production of electrolytic tinplate. The thickness of electrolytic tinplate is within the limits from 0.15 to 0.49 mm. The modern trend is to reduce the thickness butchers paper and the use of so-called. thin sheet (thickness less than 0.2 mm). Beskalajni butchers paper steel
Bezkalajni steel is also known as electrolytic chromium oxide or hromov coated steel. Beskalajni steel means a coating of organic material that provides complete corrosion resistance. Although chromium - chromium butchers paper oxide makes this impossible bezkalajni steel welding, this feature makes it excellent for adhesion of coatings such as paints, varnishes and inks. As tinplate, beskalajni steel has a good ability to shape and firmness, and is cheaper than tin plate. Cans for food, edges cans, trays, corks for bottles and containers can be made of steel beskalajnog. It can also be used to create large containers for wholesale and storage of basic ingredients or ready-made foods (Marsh & Bugusu, 2007).
Production of chrome-plated metal sheet is in principle the same as the production of white electrolytic tin, only that instead of tin on steel basis applied layer of chromium. Of the total production of steel plates intended for the production of commercial packaging, chrome plate accounts for 10% and tends to further increase the share. Aluminum
It is commonly butchers paper used for making cans, foil and multi-layer packaging. Aluminium is a light silvery white metal extracted from bauxite ore. In boksitnoj aluminum ore is present in combination with oxygen as an aluminum-III-oxide (Al 2 O 3). Magnesium and manganese are often added to aluminum to improve its strength. In contrast to most metals aluminum is highly resistant to all forms of corrosion. Its natural coverage with aluminum oxide provides a very effective barrier butchers paper to the effects butchers paper of air temperature, humidity and chemical agents (Marsh & Bugusu, 2007).
In addition to providing excellent barrier to moisture, air, odors, light and micro-organisms, aluminum possesses good flexibility and elasticity of the surface, excellent ductility and ability to form. Aluminium is also an excellent material for recycling, because it is simple