Chemical decomposition involves the interaction of very large polymer molecules
of plastics, which contain only carbon and hydrogen, with oxygen in the air. This
interaction occurs even without additions but at a very slow rate. This is why
traditional plastic, when disposed of, lasts a long time in the environment. TDPA
stimulates or accelerates this reaction and increases the degradation rate by
several orders of magnitude - faster than 100 to 1000 times, making TDPA TM
integrated products degrade and degrade physically within a few weeks to 1-2
years, depending on the formulation and disposal environment. More
explanation, a TDPA compact plastic bag and a traditional plastic bag were hung
on the fence and the difference in decomposition rates was observed in the
Main and auxiliary packaging materials: The packaging and packaging materials industry is distinguished by its complexity and overlap, and this is naturally due to the multiplicity of its products in different shapes, sizes, colors and specifications according to the desired purpose, and the following are some of them:
- First paper and cardboard: - Paper is one of the most important packaging materials and includes a wide range of varieties, each of which differs from the other in its properties, features and usage: A- (non-bleached kraft): It is one of the strongest packaging papers, relatively the cheapest, the largest in use, and the most important use: 1 - Manufacture of bags for consumer and industrial purposes (packing cement, fertilizer, gypsum and lime) 2. Manufacture of glued paper boxes. 3- Manufacture of corrugated cardboard boxes. B- (Kraft) bleaching: the most important use of it when lining it (with polyethylene and aluminum foil) together to make inexpensive packaging for liquid products such as milk, fruit juice, etc. It is characterized by its ability to print luxury. The surface is like glass and it can be opaque, translucent or colored, and these papers are either used as they are after waxing, printing or granulation, or lining them with papers similar or different from them, and usually these papers are made that do not prevent water vapor penetration, but by saturation or coverage they acquire this The property is in addition to the fact that it does not allow by its nature to permeate gases, and it can also be made neutral. Therefore, it is through an appropriate combination of these properties on paper with excellent qualities, the most important of which is preventing (rancidity) from greasy materials. D- Parchment paper: Parchment paper is made by passing unsized paper in a concentrated solution of sulfuric acid, washed and neutralized, and then goes through the drying stage. The result is to obtain high-density, semi-transparent hard paper free of fluff. Its strength is not affected by wetness until Boiling point, highly resistant to fats and oils, and its color by its nature does not prevent the leakage of water vapor, but it easily acquires this property when waxed. The stiffness of this paper can be overcome by treating it with pure glycerine and the surface. The solid, fluffless, of this paper makes it suitable for processing (silicones) to produce the paper (release paper) and has many industrial uses and is used for lining dishes of pies to ensure that these pies do not stick to them after baking and is used successfully for coating fish, meat, vegetable and animal grease.
Plastic, or what is known as plastics, is an easy-to-form material in various forms that mainly consists of polymers. In industrial societies, societies are still witnessing development from the era of coal to the era of black gold (petroleum), which contributed to the emergence of many new industries that developed over the days. The plastic industry has emerged and flourished and is today at the forefront of the current industries due to its many uses in daily life. In the installation of objects and tools around us, plastic products have replaced metal, glass and paper products. The oil is the source for all types of plastics and is manufactured by a process called polymerization, which is the building of chains of hydrocarbons by chemical reactions with the help of pressure and heat, and this process falls within the manufacture of petrochemicals, and the plastic is called by the name of the compound from which the polymer is made by the word poly (multi), for example: Polyethylene is a plastic made from a polymer based on the compound ethylene (monomer) preceded.
The plastics industry is one of the important industries that meet the packaging needs of many products, as it provides many packages that are used in food packaging and preservation, and for many commercial and industrial uses. It is manufactured from internationally authorized polyethylene material, where the tensile strength and elasticity of the plastic product varies according to the degree of powder density, using a film drawing machine, cutting scissors and a plastic welding machine.
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